JADWAL ACARA SEMIRATA JADWAL PARALLEL SESSION KUMPULAN ABSTRAK

BKS-PTN Barat

Semirata 2016 Bidang MIPA BKS-PTN Barat Graha Sriwijaya, Universitas Sriwijaya Palembang, 22-24 Mei 2016

KUMPULAN

ABSTRAK KELOMPOK FISIKA  JADWAL ACARA SEMIRATA  JADWAL PARALLEL SESSION  KUMPULAN ABSTRAK

JADWAL ACARA SEMIRATA Welcome Dinner dan Ramah Tamah Bersama Walikota Palembang (di Rumah Dinas Walikota) Minggu, 22 Mei 2016 Pukul 19.30 - 21.00 WIB

ACARA SEMINAR DAN RAPAT TAHUNAN Graha Sriwijaya UNSRI Bukit Besar Senin, 23 Mei 2016 Waktu (WIB)

Kegiatan

Pembicara

Keterangan

07.00 - 08.30

Registrasi Peserta Seminar

-

Graha Sriwijaya

08.30 - 09.00

Pembukaan

MC

Graha Sriwijaya

09.00 - 09.10

Laporan Ketua Panitia

Dr. Suheryanto, M.Si.

Graha Sriwijaya

09.10 - 09.15

Sambutan Dekan FMIPA UNSRI

Drs. Muhammad Irfan, M.T.

Graha Sriwijaya

09.15 - 09.20

Sambutan Ketua BKS PTN MIPA Wil. Barat

Dadan Kusnandar, Ph.D.

Graha Sriwijaya

09.20 - 09.30

Sambutan Rektor UNSRI

Prof. Dr. Ir. H. Anis Saggaff, MSCE.

Graha Sriwijaya

09.30 - 10.00

Foto Session & Coffee Break

MC

Graha Sriwijaya

10.00 - 10.40

Plenary Session 1

-

Graha Sriwijaya

10.40 - 11.20

Plenary Session 2

-

Graha Sriwijaya

11.20 - 12.00

Plenary Session 3

-

Graha Sriwijaya

12.00 - 13.00

Ishoma

-

Graha Sriwijaya

13.00 - 16.00

Rapat Tahunan Dekan FMIPA BKS Wil. Barat

-

Graha Sriwijaya

13.00 - 16.00

Rapat Tahunan Ketua Jurusan/Prodi

-

Gedung D3FE

13.00 - 16.00

Parallel Session

-

Gedung D3FE

16.00 - 16.30

Penutupan

-

Graha Sriwijaya

SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

iii

Jadwal Acara

JADWAL PARALLEL SESSION Waktu Tempat

: Senin, 23 Mei 2016 : Gedung Diploma 3 Fakultas Ekonomi UNSRI Bukit Besar

(Lihat Jadwal Parallel Session)

WISATA "MUSI TOUR" Waktu : Selasa, 24 Mei 2016 Mulai Pukul 09.00 WIB Tempat berkumpul : ditentukan kemudian Rute Perjalanan dari Benteng Kuto Besak (BKB) menuju Pulau Kemaro dengan menggunakan Kapal Pesiar.

iv

Graha Sriwijaya UNSRI 22-24 Mei 2016

JADWAL PARALLEL SESSION KELOMPOK FISIKA FISIKA: RUANG 1 No

Waktu

No Reg.

Pemakalah

Asal Instansi

1

13.00 - 13.10

F-1

Adi Rahwanto

Univ. Syiah Kuala

2

13.10 - 13.20

F-5

Aldi Setia Utama

Univ. Sriwijaya

3

13.20 - 13.30

F-6

Ana Rohmani

Univ. Sriwijaya

4

13.30 - 13.40

F-7

Andhika Dwipanur Priya Utama

Univ. Sriwijaya

5

13.40 - 13.50

F-14

Asma Hanifah

Institut Pertanian Bogor

6

13.50 - 14.00

F-20

Diana Pungki

Univ. Sriwijaya

7

14.00 - 14.10

F-24

Dwi Oktarina

Univ. Sriwijaya

8

14.10 - 14.20

F-26

Dwi Puryanti

Univ. Andalas

9

14.20 - 14.30

F-27

Eka Suarso

Univ. Lambung Mangkurat

10 14.30 - 14.40

F-28

Erna Frida

11 14.40 - 14.50

F-29

Eva Marlina Ginting

12 14.50 - 15.00

F-31

Fera Anggelina

Univ. Riau

13 15.00 - 15.10

F-32

Fitri Permata Sari

Univ. Sriwijaya

14 15.10 - 15.20

F-42

Iwantono

Univ. Riau

15 15.20 - 15.30

F-43

Jepri Sutanto

Univ. Indonesia

16 15.30 - 15.40

F-46

Juni Syah Putry Br Sembiring

Univ. Sriwijaya

17 15.40 - 15.50

F-53

Melvarida Panjaitan

Univ. Sriwijaya

18 15.50 - 16.00

F-54

Mersi Kurniati


19 16.00 - 16.10

F-60

Muldarisnur

Univ. Andalas

20 16.10 - 16.20

F-64

Nurdin Bukit

Univ. Negeri Medan

Univ. Qualiti Medan Univ. Negeri Medan

Judul Makalah EFEKTIFITAS PENGGUNAAN KATALIS HEMATIT (FE2O3) HASIL EKSTRAKSI BIJIH BESI PADA MATERIAL PENYIMPAN HIDROGEN BERBASIS MGH2 PEMBUATAN DAN KARAKTERISASI MAGNET PERMANEN BAFE 12O19 DENGAN PENAMBAHAN ADITIF TIO2-AL2O3 PENGARUH WAKTU PENYINARAN DAN JARAK SUMBER RADIASI FILM TERHADAP DENSITAS DAN UG (UNSHARPNESS GEOMETRY) CARBON STEEL PEMBUATAN HIBRID BONDED MAGNET ND2FE12B BAFE12O19 SERTA KARAKTERISASINYA NANOPARTICLES FLAVONOIDS OF AVOCADO SEED AS ACTIVE COMPOUND OF SUNSCREEN IN COSMETICS PENGARUH PENAMBAHAN LLDPE TERHADAP KARAKTERISTIK HDPE UNTUK APLIKASI ROTAN SINTETIS STUDI INTER-DIFUSI ALUMINIUM PADA HASTELLOY DAN LAPISAN ELECTROPLATING NIKEL EFFECT OF POLYETHYLENE GLYCOL ON THE FE 3O4 CRYSTAL SIZE SYNTHESIZED WITH OPRECIPITATION METHOD PEMODELAN TRANSMITANSI ELEKTRON DIODA TEROWONGAN SAMBUNGAN P+-N+ BERBASIS GAAS DENGAN MENGGUNAKAN METODE NON-PARABOLIK KARAKTERISTIK ASPHALT CONCRETE DENGAN BAHAN PENGISI ABU VULKANIK GUNUNG SINABUNG KARAKTERISASI NANOPARTIKEL ABU SEKAM PADI DENGAN MENGGUNAKAN METODE KOPRESIPITASI PENGARUH KONSENTRASI GALIUM PADA SIFAT FISIS NANOROD ZNO YANG DI-CO-DOPING GALIUM-BORON (GA-B) YANG DITUMBUHKAN DENGAN METODE HIDROTERMAL PEMBUATAN DAN KARAKTERISASI SIFAT MAGNET BAFE 12O19 DIDOPING DENGAN MGO-AL2O3 PENUMBUHAN NANOSTRUKTUR ZNO YANG DI-DOPING BORON (B) MENGGUNAKAN METODE HIDROTERMAL DENGAN VARIASI SUHU ANNEALING DAN EFEKNYA PADA PERFORMANSI DSSC KOMPARASI TINGKAT KEASAMAN PADA KOPI ARABIKA, KOPI LUWAK DAN KOPI HASIL IRADIASI BATAN PREPARATION AND CHARACTERIZATION OF POLYMER ELECTROLYTE BASED LIBOB (LIB(C2O4)2) PENGARUH SUHU SINTERING TERHADAP SIFAT MAGNET BERBASIS BAFE12-4XALXMN3XO19 DENGAN X = 0,8 %MOL OPTIMASI PROSES PENGEMPAAN PAPAN PARTIKEL AMPAS JARAK KEPYAR DENGAN RESPONSE SURFACE METHODOLOGY KARAKTERISASI KRISTAL FOTONIK BERBASIS OPAL MENGGUNAKAN ANGLE-RESOLVED SPECTROSCOPY SIFAT MEKANIS NANO KOMPOSIT TERMOPLASTIK HIGH DENSITY POLIETHYLENE DENGAN FILLER NANO PARTIKEL FE 3O4


v

Jadwal Parallel Session Kelompok Fisika

FISIKA: RUANG 2 No

Waktu

No Reg.

Pemakalah

Asal Instansi Univ. Sumatera Utara

Judul Makalah ANALISIS SISTEM KRISTAL DAN UNSUR SERTA MORFOLOGI PERMUKAAN BATUAN BADARMAS DENGAN METODE XRD DAN SEM-EDS PENGARUH SUHU SINTERING TERHADAP SIFAT FISIS, STRUKTUR KRISTAL DAN SIFAT MAGNET PADA PEMBUATAN MAGNET BAO.6FE 2O3 KARAKTERISASI DAN PEMBUATAN FILM TIPIS BARIUM STRONTIUM TITANAT BA0,7SR0,3TIO3 (BST) MENGGUNAKAN METODE SOL-GEL

1

13.00 - 13.10

F-65

Perdinan Sinuhaji

2

13.10 - 13.20

F-66

Pofi Putri Utami

Univ. Sriwijaya

3

13.20 - 13.30

F-69

Rahmi Dewi

Univ. Riau

4

13.30 - 13.40

F-70

Ratnawulan

Univ. Negeri Padang

5

13.40 - 13.50

F-72

Ria Irma Yani

Univ. Riau

6

13.50 - 14.00

F-79

Rudi Haryadi

Univ. Sultan Ageng Tirtayasa

7

14.00 - 14.10

F-80

Saktioto

Univ. Riau

8

14.10 - 14.20

F-81

Samsidar

Univ. Jambi

ANALISIS PERUBAHAN STRUKTUR FASA BESI OKSIDA DARI BIJIH BESI KABUPATEN SOLOK SELATAN AKIBAT TEMPERATUR KALSINASI CARBONIZATION PROFILE IN THE ELECTRODES CARBON PRODUCTION FROM FLOWER OF ELEPHANT GRASS STUDI PENGARUH MEDAN MAGNET TERHADAP KOROSI LOGAM BESI DALAM LARUTAN ELEKTROLIT PEMBANGKIT CARBON NANO TUBE DENGAN PELEPASAN LISTRIK PLASMA MENGGUNAKAN ELEKTRODA GRAFIT STUDI AWAL KALIBRASI SENSOR KELEMBABAN TANAH PADA TANAH INSEPTISOL DENGAN PENAMBAHAN PUPUK ANORGANIK

9

14.20 - 14.30

F-82

Septia Dini Yardi

Univ. Riau

SURFACTANT ADDITION ON PREPARATION OF CARBON ELECTRODES SUPERCAPACITOR FROM RUBBER WOOD SAWDUST

10 14.30 - 14.40

F-83

Setyanto Tri Wahyudi


ITERASI OPTIMUM PADA MINIMISASI ENERGI BIOMOLEKUL T1 LIPASE DALAM PELARUT METANOL

11 14.40 - 14.50

F-84

Simon Sembiring

Univ. Lampung

EFFECT OF ALUMINA ADDITION ON THE PHASE COMPOSITION OF CORDIERITE PRECURSORS FROM RICE HUSK SILICA

12 14.50 - 15.00

F-85

Siti Nikmatin


13 15.00 - 15.10

F-86

Sri Mulyadi Dt. Basa

Univ. Andalas

14 15.10 - 15.20

F-87

Sri Oktamuliani

Univ. Jambi

15 15.20 - 15.30

F-89

Suhufa Alfarisa

Univ. PGRI Palembang

16 15.30 - 15.40

F-94

Widya Sinta Mustika

Univ. Riau

17 15.40 - 15.50

F-96

Yesi Puspita Sari

Univ. Riau

18 15.50 - 16.00

F-97

Zahratul Aini

Univ. Riau

19 16.00 - 16.10

F-102

Alimin Mahyudin

Univ. Andalas

SINTESIS DAN KARAKTERISTIK ARUS-TEGANGAN STRUKTUR KOMPOSIT NANO BOLA KARBON-ZNO ANALISA KEBERADAAN LOGAM BESI DAN SENG PADA PERMUKAAN MEDIA PENYERAP KARBON AKTIF THE CO2 ACTIVATION EFFECT OF CARBON ELECTRODA FROM FLOWER OF ELEPHANT GRASS CARBONIZATION TEMPERATURE DIFFERENCES OF SYNTHESIS CARBON PAPER FROM BANANA PEEL WASTE PENGARUH SERAT PINANG (ARECA CATECHU L. FIBER) TERHADAP SIFAT MEKANIK DAN SIFAT FISIK BAHAN SEMEN-GIPSUM

20 16.10 - 16.20

F-104

Antoni

Univ. Sriwijaya

DOPING MNO DAN AL2O3 PADA MAGNET PERMANEN BERBASIS BAFE12O19 DENGAN METALURGI SERBUK DAN KARAKTERISASINYA

ANALISA TERMAL BIOKOMPOSIT FILLER SHORT FIBER KENAF PADA POLIMER ABS PENGARUH PENAMBAHAN TEPUNG BULU AYAM (TBA) DAN PATI KULIT PISANG TERHADAP SIFAT MEKANIK DAN BIODEGRADABILITAS PLASTIK CAMPURAN POLIPROPILENA BEKAS ANALISIS MIKROSTRUKTURAL POLA DIFRAKSI SINAR X PADA GRANIT MENGGUNAKAN METODE LINE - PROFILE FITTING DAN RIETVELD

FISIKA: RUANG 3 No

Waktu

No Reg.

Pemakalah

Asal Instansi

1

13.00 - 13.10

F-30

Fandi Oktasendra

Univ. Jambi

2

13.10 - 13.20

F-103

Annesa Auliya

Univ. Riau

3

13.20 - 13.30

F-105

Ari Frianto

Univ. Jambi

4

13.30 - 13.40

F-106

Astuti

Univ. Andalas

5

13.40 - 13.50

F-108

Cahya Wulandari

Univ. Indonesia

6

13.50 - 14.00

F-110

Dahyunir Dahlan

Univ. Andalas

7

14.00 - 14.10

F-111

David Setyabudi

Univ. Sriwijaya

8

14.10 - 14.20

F-112

Delovita Ginting

Univ. Muhammadiyah Riau

vi


Judul Makalah PENGAPLIKASIAN METODE FUNGSI AIRY PADA PERMASALAHAN PROBABILITAS TEROBOSAN KUANTUM EFFECTS OF DIFFERENT LASER WAVELENGTH ON FLUORESCENCE INTENSITY OF LOOSED PALM OIL FRUITS THE EFFECT QUANTUM LEARNING MODEL BY USING MULTIMEDIA ON PHYSICS STUDENTS ACHIEVEMENT SINTESIS KARBON AKTIF DARI KULIT DURIAN SEBAGAI ABSORBSI ION FE PADA AIR GAMBUT SMALL FIELD ELECTRON BEAM OUTPUT FACTOR ON LINEAR ACCELERATOR SINTESIS LAPISAN TIPIS TIO2 DENGAN METODA ELEKTRODEPOSISI UNTUK APLIKASI LAPISAN SWA-BERSIH PENGARUH KOMPOSISI MONOMER DAN CROSS-LINKER SERTA PROSES EKSTRAKSI TEMPLATE TERHADAP SIFAT SENSING PADA PARTIKEL MIP (MOLECULARY IMPRINTED POLYMER) AMETRIN PEMBUATAN DAN KARAKTERISASI MAGNET PERMANEN BAFE 12O19 DENGAN PENAMBAHAN ADITIF B2O3

Jadwal Parallel Session Kelompok Fisika 9

PEMBUATAN KALSIUM KARBONAT (CACO3) BERBASIS CANGKANG BEKICOT (ACHATINA FULICA) DENGAN TEKNIK KALSINASI SEBAGAI BAHAN BAKU BIOKERAMIK SINTESIS DAN KARAKTERISASI SUPERKONDUKTOR B(PB,SB)SCCO FASE 2223 DENGAN METODE PADATAN KAJIAN AWAL KANDUNGAN MINERAL MAGNETIK PASIR BESI DI KECAMATAN JEJAWI OKI SUMSEL PENGARUH PENAMBAHAN ABU SEKAM PADI SEBAGAI CAMPURAN TERHADAP KEKUATAN BATU BATA

14.20 - 14.30

F-116

Dwi Asmi

Univ. Lampung

10 14.30 - 14.40

F-117

Eidi Sihombing

Univ. Negeri Medan

11 14.40 - 14.50

F-118

Fera Nopviana

Univ. Sriwijaya

12 14.50 - 15.00

F-125

Karya Sinulingga

13 15.00 - 15.10

F-132

Ninis Hadi Haryanti

14 15.10 - 15.20

F-133

Noni Febriani

15 15.20 - 15.30

F-136

Reza Umami

Univ. Riau

16 15.30 - 15.40

F-141

Sri Novita

Univ. Riau

17 15.40 - 15.50

F-144

Syarifatul Ulya

Univ. Indonesia

18 15.50 - 16.00

F-147

Yosi Sudarsi Asril

Univ. Indonesia

19 16.00 - 16.10

F-153

Ambran Hartono

UIN Jakarta

PEMANFAATAN FILM PVDF UNTUK MENDETEKSI REAKSI KIMIA

20 16.10 - 16.20

F-154

Nita Susanti

Univ. Sriwijaya

ANALISIS SIFAT MAGNETIK NANOPARTIKEL PASIR BESI DAERAH LEMABANG YANG DISINTESA MENGGUNAKAN HIGH ENERGY MILLING (SHAKER MILL-PPF UG)

Univ. Negeri Medan Univ. Lambung Mangkurat Univ. Muhammadiyah Riau

KOMBINASI BAHAN CAMPURAN ABU TERBANG DAN KAPUR TOHOR YANG OPTIMUM UNTUK PENAMBAHAN KUAT TEKAN BATA RINGAN PENINGKATAN KONDUKTIVITAS LISTRIK PANI:ZEOLIT DENGAN BAHAN DASAR BOTTOM ASH BATUBARA ANALYSIS OF RELATION BETWEEN FLUORESCENCE INTENSITY AND RIPENESS LEVELS OF LOOSED PALM OIL FRUITS EFEK VARIASI PERSENTASE GALIUM PADA PENUMBUHAN NANOROD ZNO YANG DI-DOPING GALIUM DENGAN METODE HIDROTERMAL KARAKTERISASI DOSIMETRI FILM GAFCHROMIC EBT3 PADA BERKAS ELEKTRON VERIFIKASI DOSIMETRI TEKNIK STEREOTACTIC BODY RADIOTHERAPY (SBRT) METASTASIS TULANG: STUDI KASUS MENGGUNAKAN FANTOM HOMOGEN DAN INHOMOGEN

FISIKA: RUANG 4 No Waktu 1 13.00 - 13.10

No Reg. F-2

Pemakalah Afrizal Mayub

Asal Instansi Univ. Bengkulu Institut Pertanian Bogor

2

13.10 - 13.20

F-3

Agus Kartono

3

13.20 - 13.30

F-8

Andi Putra Sairi

Univ. Jambi

4

13.30 - 13.40

F-11

Arif Budiman

Univ. Andalas

5

13.40 - 13.50

F-17

Dedi Setiabudidaya

Univ. Sriwijaya

6

13.50 - 14.00

F-34

Gurum Ahmad Pauzi

Univ. Lampung

7

14.00 - 14.10

F-35

Heriyanto Syafutra

8

14.10 - 14.20

F-39

Ichy Lucya Resta

Institut Pertanian Bogor Univ. Jambi

9

14.20 - 14.30

F-44

Juandi M.

Univ. Riau

10 14.30 - 14.40

F-56

Mohammad Taufik

Univ. Padjadjaran

11 14.40 - 14.50

F-68

Rahmatsyah

12 14.50 - 15.00

F-76

Rita Juliani

13 15.00 - 15.10

F-101

Afdhal Muttaqin

Univ. Andalas

14 15.10 - 15.20

F-121

Hamdi Rifai

Univ. Negeri Padang

15 15.20 - 15.30

F-126

Laras Ati Nur Fatimah

Univ. Indonesia

16 15.30 - 15.40

F-137

Ria Fitriani

Univ. Riau

17 15.40 - 15.50

F-140

Sri Fitria Retnawaty


18 15.50 - 16.00

F-143

Suwandi

Univ. Indonesia

Univ. Negeri Medan Univ. Negeri Medan

Judul Makalah ANALISIS PERAN E-LEARNING DALAM PEMBELAJARAN FISIKA DYNAMICS OF GLUCOSE AND INSULIN ON THE HUMAN BODY USING MODIFIED ORAL MINIMAL MODEL STUDI KONDUKTIVITAS TANAH AKIBAT PENAMBAHAN PUPUK ANORGANIK UNTUK PENGEMBANGAN SENSOR KELEMBABAN TANAH HUBUNGAN UKURAN BUTIR MINERAL MAGNETIK DAN SUSEPTIBILITAS MAGNETIK PASIR BESI PANTAI SUNUR PARIAMAN SUMATERA BARAT KAJIAN PENDAHULUAN PENGGUNAAN OER PADA MATAKULIAH FISIKA DASAR PS KIMIA UNSRI KARAKTERISASI PENURUNAN VISKOSITAS PELUMAS DENGAN MENGGUNAKAN METODE ANALISIS SPECTROGRAM PADA SINYAL SUARA MESIN STUDI KASUS MESIN KOMPRESOR APLIKASI ALGORITMA PARTICLE SWARM OPTIMIZATION UNTUK MENENTUKAN KONSTANTA PADA MINIMAL MODEL TERMODIFIKASI PEMODELAN RESPON RESISTIVITAS-DC 2D SIMULASI PENGARUH PENGAMBILAN AIR TANAH OLEH PENDUDUK TERHADAP KETERSEDIAAN AIR TANAH SIMULASI PENGGUNAAN PIEZOELEKTRIK PADA PEMBANGKIT LISTRIK TENAGA BAYU STUDI ANALISIS AIR DAN SEDIMEN DASAR DI AREAL ASH BATUBARA TAPANULI TENGAH STUDI SIFAT MEKANIK MORTAL BATU GAMPING DAERAH CANGAP KERABANGAN KABUPATEN LANGKAT PENENTUAN NILAI RESISTANSI FILM TEBAL PANI-SELULOSA SEBAGAI SENSOR RH PERUBAHAN SIFAT FISIS LINGKUNGAN KOTA PADANG AKIBAT TERJADINYA GERHANA MATAHARI PENGARUH KEDALAMAN PADA OUTPUT FAKTOR LAPANGAN KECIL DENGAN DETEKTOR THERMOLUMINESENSE DOSIMETER RODS DAN IONIZATION CHAMBER JENIS EXRADIN A16 COMPARISON OF LASER AND LED PERFORMANCES ON FLUORESCENCE IMAGING OF LOOSED PALM OIL FRUITS KAJIAN DAYA TAMPUNG SUNGAI GODANG DI KECAMATAN PINGGIR KABUPATEN BENGKALIS RIAU AUDIT DOSIMETRI TREATMENT PLANNING SYSTEM MULTICENTER RADIOTERAPI


vii

Jadwal Parallel Session Kelompok Fisika 19 16.00 - 16.10

F-148

Yulia Fitri


20 16.10 - 16.20

F-150

Nasrullah Idris

Univ. Syiah Kuala

PREDIKSI ARAH SEBARAN DAN KONSENTRASI EMISI DARI CEROBONG ASAP RENCANA PEMBANGUNAN PEMBANGKIT LISTRIK TENAGA MESIN DAN GAS (PLTMG) DURI DETEKSI MAGNESIUM DALAM TANAH TERDAMPAK TSUNAMI DENGAN TEKNIK LASER-INDUCED BREAKDOWN SPECTROSCOPY (LIBS) MENGGUNAKAN LASER ND -YAG

FISIKA: RUANG 5 No

Waktu

No Reg.

Pemakalah

Asal Instansi

Judul Makalah ANALISIS SINYAL SUARA JANTUNG (PHONOCARDIOGRAM) MENGGUNAKAN DIMENSI FAKTAL RANCANG BANGUN INSTRUMEN MONITORING LAJU PERNAPASAN MANUSIA MENGGUNAKAN ARDUINO DAN GUI MATLAB

1

13.00 - 13.10

F-12

Arif Surtono

Univ. Lampung

2

13.10 - 13.20

F-15

Bayu Hadi Saputro

Univ. Jambi

3

13.20 - 13.30

F-19

Defta Harmiawan

PT Badak NGL Teknikal Departemen

MARINE LOADING ARM CONTROL SYSTEM UPGRADE

4

13.30 - 13.40

F-33

Gokma Sahat Tua

Univ. Riau

ASSESSMENT OF THE RIPENESS LEVELS OF PALM OIL-FRESH FRUIT BUNCHES USING LASER SPECKLE IMAGING

5

13.40 - 13.50

F-45

Jubaidah

Univ. Negeri Medan

STUDI TRANSPORT NEUTRON DALAM REAKTOR NUKLIR

6

13.50 - 14.00

F-55

Mohammad Taufik

Univ. Padjadjaran

7

14.00 - 14.10

F-67

Rahmat Rasyid

Univ. Andalas

8

14.10 - 14.20

F-77

Rofi Wahyu Septrio

Univ. Riau

9

14.20 - 14.30

F-88

Suhendra

Univ. Bengkulu

10 14.30 - 14.40

F-91

Syahrun Nur

Univ. Syiah Kuala

11 14.40 - 14.50

F-107

Atina

Univ. PGRI Palembang

12 14.50 - 15.00

F-119

Feriska Handayani Irka

Univ. Andalas

13 15.00 - 15.10

F-128

Mairizwan

Univ. Negeri Padang

14 15.10 - 15.20

F-129

Meqorry Yusfi

Univ. Andalas

15 15.20 - 15.30

F-134

Nurhidayah

Univ. Jambi

16 15.30 - 15.40

F-138

Sari Novalianda

Univ. Sriwijaya

17 15.40 - 15.50

F-139

Siti Aulia

Univ. Sriwijaya

18 15.50 - 16.00

F-146

Yohandri

19 16.00 - 16.10

F-157

Assaidah

Univ. Negeri Padang Univ. Sriwijaya

20 16.10 - 16.20

F-160

Khairul Saleh

Univ. Sriwijaya

PENGEMBANGAN PROTOTIPE RUMAH DC UNPAD SEBAGAI SOLUSI PENYEDIAAN LISTRIK PEDESAAN ANALISIS PENGARUH PERUBAHAN KENAIKAN SUHU EKSTRIM TERHADAP KINERJA KESTABILAN SENSOR KELEMBABAN DHT22 ANALISA KORELASI KONTRAS SPEKEL DAN TINGKAT KEMATANGAN BUAH SAWIT BRONDOLAN MENGGUNAKAN METODE LSI STUDY POTENTIAL LANDSLIDE BASED ON THE DOMINANT FREQUENCY (FO)WITH METHOD HVSR STUDI SPEKTRA KOPI VARIETAS ARABIKA DAN ROBUSTA MENGGUNAKAN TEKNIK LASER INDUCED BREAKDOWN SPECTROSCOPY (LIBS) DETEKSI ABNORMALITAS CITRA PARU DENGAN SEGMENTASI REGION OF INTEREST MENGGUNAKAN MATLAB 2013A SIMULASI PENGARUH VARIASI DAYA KELUARAN DAN VARIASI PENEMPATAN BAHAN BAKAR TERHADAP TINJAUAN NEUTRONIK PADA TERAS GAS COOLED FAST REACTOR (GCFR) DESAIN DRIVER ENERGI PADA SEL SURYA DENGAN METODE MAXIMUM POWER POINT TRACKING (MPPT) BERBASIS ATMEGA 328 ANALISIS PEMANFAATAN DUA ELEMEN PELTIER PADA PENGONTROLAN TEMPERATUR AIR PERANCANGAN SENSOR TINGGI BADAN BERBASIS ARDUINO MENGGUNAKAN SENSOR ULTRASONIK HC-SR04 DESAIN NEUTRONIK REAKTOR CEPAT PERPENDINGIN GAS 500 MWT BERBASIS BAHAN BAKAR URANIUM NITRIDE ANALISIS NEUTRONIK PADA DESAIN GAS-COOLED FAST REACTOR BERUKURAN KECIL DAN BERUMUR PANJANG DESAIN ANTENA HORN PIRAMIDA UNTUK GROUND-BASED SYNTHETIC APERTURE RADAR (GB-SAR) SENSOR FILTER FARROW SEBAGAI INTERPOLATOR SINYAL DATA OFDM PERANCANGAN HARDWARE PROTOTYPE SISTEM PELACAK POSISI MATAHARI PADA PANEL SURYA MENGGUNAKAN MIKON ATMEGA16

FISIKA: RUANG 6 No

Waktu

No Reg.

Pemakalah

Asal Instansi

Judul Makalah

1

13.00 - 13.10

F-10

Ardian Putra

Univ. Andalas

2

13.10 - 13.20

F-13

Ashar Muda Lubis

Univ. Bengkulu

3

13.20 - 13.30

F-16

Budi Harlianto

Univ. Bengkulu

4

13.30 - 13.40

F-22

Ahmad Fauzi

Univ. Negeri Padang

IDENTIFIKASI POTENSI PANAS BUMI DARI KANDUNGAN SILIKA MATA AIR PANAS SENTRAL, SUMATERA BARAT SURVEY GPS GEODETIK UNTUK PENGAMATAN DEFORMASI SESAR SUMATERA DI DAERAH SUMATERA BARAT MAPPING OF PEAK GROUND ACCELERATION (PGA) USE KANAI AND KATAYAMA METHODS FOR EARTHQUAKE HAZARD MITIGATION IN THE REGENCY OF NORTH BENGKULU INTERPRETASI JENIS DAN SEBARAN MINERAL MENGGUNAKAN METODE GEOLISTRIK INDUCED POLARIZATION

5

13.40 - 13.50

F-25

Dwi Pujiastuti

Univ. Andalas

ANALISIS KARAKTERISTIK ANOMALI FREKUENSI KRITIS DI LAPISAN E DAN F IONOSFIR GEMPA MENTAWAI 25 OKTOBER 2010

viii


Jadwal Parallel Session Kelompok Fisika 6

13.50 - 14.00

F-36

Heryanto Romario

Univ. Negeri Medan

7

14.00 - 14.10

F-38

Husnul Hamdi

Univ. Jambi

8

14.10 - 14.20

F-41

Iskhaq Iskandar

Univ. Sriwijaya

9

14.20 - 14.30

F-47

Kms Novranza

Univ. Indonesia

10 14.30 - 14.40

F-49

M. Farid

Univ. Bengkulu

11 14.40 - 14.50

F-50

Mahrizal

Univ. Negeri Padang

12 14.50 - 15.00

F-57

Muhammad Isa

Univ. Syiah Kuala

13 15.00 - 15.10

F-73

Rida Samdara

Univ. Bengkulu

14 15.10 - 15.20

F-74

Rio Sahputra

Univ. Bengkulu

15 15.20 - 15.30

F-90

Syafriani

Univ. Negeri Padang

16 15.30 - 15.40

F-100

Afdal Afdal

Univ. Andalas

STUDY ANALYSIS OF COAL ASH AREA BASED OF GEOELECTRIC IN CENTRAL TAPANULI PENERAPAN METODE GEOLISTRIK TAHANAN JENIS KONFIGURASI WENNER-SCHLUMBERGER PADA PENENTUAN POTENSI AKUIFER DI DAERAH SABAK COUPLED OCEAN-ATMOSPHERE MODE IN TROPICAL INDO-PACIFIC DURING 2015 PEMETAAN KELURUSAN MENGGUNAKAN PENGINDERAAN JAUH DAN KORELASINYA DENGAN DISTRIBUSI MANIFESTASI DI LAPANGAN GEOTHERMAL KEPAHIANG, BENGKULU LONGSOR PANTAI BERDASARKAN DATA MIKROSEISMIK DAN PERCEPATAN GETARAN TANAH MAKSIMUM SEBAGAI PENYEBAB MUNDURNYA GARIS PANTAI DI KAB. BENGKULU UTARA TEKNOLOGI MONITORING GEOLISTRIK TIME-LAPSE UNTUK MEMANTAU DAERAH RAWAN LONGSOR DI KOTA PADANG APLIKASI TEKNIK OVERLAY UNTUK MENENTUKAN POTENSI PANAS BUMI JABOI, ACEH PERUBAHAN GARIS PANTAI PESISIR BARAT PROPINSI BENGKULU PERIODE 1998 – 2011 ESTIMASI SLIP-RATE DI DAERAH SESAR SUMATRA BAGIAN SELATAN DENGAN PENGAMATAN GPS KAJIAN TEKTONIK WILAYAH SUMATERA BARAT BERDASARKAN ANALISA MODEL MANTEL BAGIAN ATAS DAN DATA SEISMISITAS KAJIAN HUBUNGAN KONDUKTIVITAS LISTRIK DENGAN KONSENTRASI PADATAN TERLARUT PADA AIR PERMUKAAN

17 15.40 - 15.50

F-127

Liza Lidiawati

Univ. Bengkulu

VARIABILITAS UPWELLING DI PERAIRAN SELATAN JAWA TIMUR

18 15.50 - 16.00

F-131

Neneng Fitrya


ANALISIS PENYEBARAN LINDI MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI WENNER DI TEMPAT PEMBUANGAN AKHIR (TPA) BANGKINANG SEBERANG

19 16.00 - 16.10

F-142

Surya Dwi Yurisman Prabu Oktarino

Univ. Sriwijaya

KUMPULAN NILAI KOEFISIEN UNTUK PENENTUAN KELEMBABAN RELATIP RATA-RATA HARIAN KOTA PALEMBANG

20 16.10 - 16.20

F-155

Hendra Budiman

Univ. Sriwijaya

INTERPRETASI DATA LOG SUMUR X-15 LAPANGAN Y DALAM PENENTUAN JUMLAH CADANGAN HIDROKARBON

FISIKA: RUANG 7 No

Waktu

No Reg.

Pemakalah

Asal Instansi Univ. Negeri Padang

1

13.00 - 13.10

F-4

Akmam

2

13.10 - 13.20

F-9

Andik Purwanto

Univ. Bengkulu

3

13.20 - 13.30

F-18

Dedy Hamdani

Univ. Bengkulu

4

13.30 - 13.40

F-37

Hidayati

Univ. Negeri Padang

5

13.40 - 13.50

F-40

Irwan Koto

Univ. Bengkulu

6

13.50 - 14.00

F-48

Leni Rumiyanti

Univ. Lampung

7

14.00 - 14.10

F-51

Maison

Univ. Jambi

8

14.10 - 14.20

F-52

Masril

Univ. Negeri Padang

9

14.20 - 14.30

F-58

Muhammad Nasir

Univ. Riau

10 14.30 - 14.40

F-59

Muhammad Nor

Univ. Riau

11 14.40 - 14.50

F-61

Nani Elvira

Univ. Jambi

12 14.50 - 15.00

F-62

Nirwana

Univ. Bengkulu

13 15.00 - 15.10

F-63

Novera Yanti S.

Univ. Jambi

Judul Makalah PENGARUH PENGGUNAAN BAHAN AJAR MENGINTEGRASIKAN MSTBK BERBASIS ICT DALAM PEMBALAJARAN FISIKA DI KELAS XI SMA PENERAPAN MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN BERFIKIR KRITIS MAHASISWA PRODI PENDIDIKAN FISIKA FKIP-UNIB PADA MATA KULIAH TERMODINAMIKA PENERAPAN MODEL PROBLEM BASED LEARNING (PBL) UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH FISIKA SISWA PADA MATERI FLUIDA DI KELAS XI IPA SMA NEGERI 5 KOTA BENGKULU DEVELOPMENT OF TEACHING MATERIALS PHYSICS THROUGH ICT USING MOODLE SOFTWARE FOR HIGH SCHOOL CLASS X ASSESMEN PEMBELAJARAN FISIKA BERBASIS TAXONOMI FOR SCIENCE EDUCATION : PENERAPAN PROBLEM BASED LEARNING MELALUI PENELITIAN TINDAKAN DI KELAS X SINGULARITAS RUANG-WAKTU BERMETRIK KERR DAN KERR-NEWMAN DALAM TEORI RELATIVITAS UMUM EQUITY AND TEACHER SUPPORT FOR SCIENCE STUDENTS OF SENIOR HIGH SCHOOL IN JAMBI IMPLEMENTATION OF LEARNING MATERIAL BASED ON SCIENTIFIC APPROACH THROUGH ICT IN CLASS X SMAN 10 PADANG PERANCANGAN DAN PEMBANGUNAN MULTIMEDIA PEMBELAJARAN FISIKA INTERAKTIF VISUALISASI GERAK MELINGKAR BERATURAN DI SEKOLAH MENENGAH ATAS (SMA) HASIL BELAJAR KOGNITIF MAHASISWA MELALUI PENERAPAN MODEL PEMBELAJARAN PROBLEM SOLVING FISIKA PADA MATA KULIAH OPTIK DI PROGRAM STUDI PENDIDIKAN FISIKA UR PENGARUH MODEL PEMBELAJARAN ROLE PLAY TERHADAP HASIL BELAJAR SISWA DI MTSN PAMENANG PENGARUH MANAGEMEN PEMBELAJARAN TERHADAP HASIL BELAJAR FISIKA SISWA DI SMPN KOTA BENGKULU UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR FISIKA SISWA DENGAN MENGGUNAKAN STRATEGI PEMBELAJARAN AKTIF TIPE TRADING PLACE


ix

Jadwal Parallel Session Kelompok Fisika 14 15.10 - 15.20

F-71

Renol Afrizon

Univ. Negeri Padang

15 15.20 - 15.30

F-130

Moch. Rifqi Tamara

Univ. Sriwijaya

16 15.30 - 15.40

F-149

Yulkifli

Univ. Negeri Padang

17 15.40 - 15.50

F-156

Yulinar Adnan

Univ. Sriwijaya

ANALISIS KEBUTUHAN PENGEMBANGAN PERANGKAT PERKULIAHAN FISIKA STATISTIK BERBASIS KKNI DENGAN PENDEKATAN KONSTRUKTIVIS ANALISIS KUANTUM KASUS POTENSIAL SEDERHANA PADA KEADAAN ENERGI PARTIKEL SAMA DENGAN ENERGI POTENSIAL PENGEMBANGAN APLIKASI SENSOR SEBAGAI ALAT UKUR MENJADI ALAT-ALAT PRAKTIKUM FISIKA DALAM MENDUKUNG IMPLEMENTASI KURIKULUM 2013 KOMPARASI DAYA OUTPUT PANEL SURYA DENGAN REFLEKTOR DAN SUN TRACKER

18 15.50 - 16.00

F-159

Try Mutia Arini

Univ. Sriwijaya

FUNGSI GELOMBANG ATOM HIDROGEN DALAM KOORDINAT PARABOLIK

FISIKA: RUANG 8 No

Waktu

No Reg.

Pemakalah

Asal Instansi

1

13.00 - 13.10

F-75

Rita Asma

Univ. Jambi

2

13.10 - 13.20

F-78

Rosane Medriati

Univ. Bengkulu

3

13.20 - 13.30

F-92

Tanti

IAIN Sulthan Thaha Saifuddin Jambi

4

13.30 - 13.40

F-93

Usmeldi

Univ. Negeri Padang

5

13.40 - 13.50

F-95

Yenni Darvina

Univ. Negeri Padang

6

13.50 - 14.00

F-98

Zulhelmi

Univ. Riau

7

14.00 - 14.10

F-99

Zulhendri Kamus

Univ. Negeri Padang

8

14.10 - 14.20

F-109

Connie

Univ. Bengkulu

9

14.20 - 14.30

F-113

Derlina

Univ. Negeri Medan

10 14.30 - 14.40

F-114

Desy Hanisa Putri

Univ. Bengkulu

11 14.40 - 14.50

F-115

Djusmaini Djamas

Univ. Negeri Padang

12 14.50 - 15.00

F-120

Fifi Fitriani

Univ. Jambi

13 15.00 - 15.10

F-122

Hesti Widayani

Univ. Jambi

14 15.10 - 15.20

F-123

Ida Wahyuni

Univ. Negeri Medan

15 15.20 - 15.30

F-124

Indra Sakti

Univ. Bengkulu

16 15.30 - 15.40

F-135

Ratna Tanjung

Univ. Negeri Medan

17 15.40 - 15.50

F-145

Wahyuni Satria Dewi

Univ. Negeri Padang

18 15.50 - 16.00

F-151

A. Halim

Univ. Syiah Kuala

19 16.00 - 16.10

F-152

Jurubahasa Sinuraya

Univ. Negeri Medan

x


Judul Makalah TASK ORIENTATION AND ACADEMIC EFFICACY OF GRADE XI SCIENCE STUDENTS OF THE FIRST SENIOR HIGH SCHOOL IN JAMBI CITY UPAYA MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH DENGAN PENERAPAN PENDEKATAN SAINTIFIK MELALUI MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) PADA POKOK BAHASAN SUHU DAN KALOR DI KELAS X1 SMAN 1 KEPAHIANG HUBUNGAN ANTARA PERSEPSI SISWA TERHADAP LINGKUNGAN BELAJAR KELAS DENGAN BELIEFS SISWA TENTANG FISIKA DAN PEMBELAJARAN FISIKA PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS RISET DENGAN STRATEGI POE UNTUK MENINGKATKAN KOMPETENSI FISIKA PESERTA DIDIK PENGGALIAN NILAI-NILAI KARAKTER PADA MATERI FISIKA SMA KELAS XI (EXCAVATION OF CHARACTER VALUES AT PHYSICS CONTENTS OF HIGH SCHOOL AT CLASS XI) PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA FISIKA SMP BERORIENTASI STRATEGI METAKOGNITIF BERBASIS KURIKULUM 2013 FISIKA DAN NILAI KEISLAMAN DALAM BAHAN AJAR BERMUATAN KECERDASAN KOMPREHENSIF UPAYA MENINGKATKAN MUTU PROSES DAN HASIL BELAJAR MAHASISWA DENGAN OPEN ENDED PROBLEM BERBASIS PROBLEMBASED-LEARNING PADA KONSEP LISTRIK-MAGNET EFEK MODEL PEMBELAJARAN DISCOVERY DAN SIKAP ILMIAH TERHADAP KEMAMPUAN KOGNITIF SISWA IMPLEMENTASI MODEL PROBLEM BASED LEARNING (PBL) BERBANTUAN LKS VIRTUAL UNTUK MENINGKATKAN AKTIFITAS BELAJAR DAN KEMAMPUAN PEMECAHAN MASALAH PADA KONSEP USAHA DAN ENERGI DIKELAS 11 IPA 1 SMAN 4 KOTA BENGKULU ANALISIS KONDISI AWAL PEMBELAJARAN FISIKA SMAN KOTA PADANG DALAM RANGKA PENGEMBANGAN BAHAN AJAR FISIKA MULTIMEDIA INTERAKTIF BERBANTUAN GAME EFEKTIVITAS PENGGUNAAN KERANGKA KERJA BERBASIS TPACK DALAM MENGOPTIMALKAN HOTS SISWA PENERAPAN METODE INQUIRY UNTUK MENINGKATKAN AKTIFITAS DAN HASIL BELAJAR FISIKA SISWA PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR FISIKA SISWA SMA UPAYA MENINGKATKAN HASIL BELAJAR FISIKA MELALUI PENERAPAN MODEL PEMBELAJARAN DISCOVERY DENGAN PENDEKATAN SAINTIFIK DI SMAN 2 ARGAMAKMUR THE EFFECT OF PROBLEM BASED LEARNING MODELS IN PHYSICS LEARNING OUTCOMES ON STUDENT CLASS X LABUHAN DELI ANALISIS HASIL BELAJAR SISWA DALAM PEMBELAJARAN SCIENCE ENVIRONMENT TECHNOLOGY SOCIETY (SETS) MENGGUNAKAN LKS BERORIENTASI LIFE SKILLS UPAYA MENGATASI MISKONSEPSI SISWA PADA KONSEP LISTRIK DINAMIS DENGAN MEDIA SIMULASI PHET UNTUK MENYIAPKAN SDA MENGHADAPI MEA PENGEMBANGAN BAHAN PEMBELAJARAN BERORIENTASI PADA MATAKULIAH FISIKA UMUM

KUMPULAN

ABSTRAK KELOMPOK FISIKA

F1 -

Efektifitas Penggunaan Katalis Hematit (Fe2O3) Hasil Ekstraksi Bijih Besi pada material Penyimpan Hidrogen berbasis MgH2 Adi Rahwanto dan Zulkarnain Jalil Jurusan Fsika, FMIPA, Universitas Syiah Kuala, Banda Aceh 23111, Prodi Magister Fisika, Program Pasca Sarjana Universitas Syiah Kuala, Banda Aceh 23111; e-mail; [email protected];

Abstrak: Kendala utama yang menghambat pada aplikasi bahan bakar fuel cell untuk kendaraan saat ini adalah tabung penyimpan hidrogennya, Oleh sebab itu makalah ini akan melaporkan hasil kajian terhadap material penyimpan hidrogen berbasis MgH2 yang disisipkan katalis Fe2O3 sebesar 5 wt% dan dipreparasi dengan teknik mechanical alloying dengan variasi waktu 3 jam, 5 jam dan 7 jam. Sampel Fe 2O3 diperoleh dari lokasi pertambangan Lhoong Setia Minning (LSM) Desa Jantang, Lhoong, Aceh Besar. Proses separasi sampel tahap awal dilakukan secara manual dengan menggunakan magnet batang. Selanjutnya dilakukan ekstraksi hematit dengan penambahan asam-basa dalam hal ini asam yang digunakan adalah HCL dan basa yang digunakan adalah NaOH masing-masing 1M. Selanjutnya dilakukan proses milling sampel MgH2- 5wt% Fe2O3 menggunakan high energy planetary ball milling. Hasil pengujian dengan difraksi sinar-X diketahui bahwa fasa MgH2 adalah fasa yang paling dominan/utama. Dari uji SEM menunjukkan bahwa semakin lama proses waktu milling maka struktur permukaan sampel akan lebih halus dan semua sampel cenderung untuk teraglomerasi. Pengujian termal dengan DSC menunjukkan bahwa proses desorpsi H2 mengalami penurunan suhu dari suhu 194,56 oC dengan variasi waktu milling 7 jam. Kata kunci: penyimpan hidrogen , magnesium, mechanical alloying, katalis Fe2O3, bijih besi.

F2 -

Analisis peran e-learning dalam pembelajaran Fisika Afrizal Mayub Dosen Prodi S-2 Pendidikan IPA JMIPA FKIP Universitas Bengkulu

Abstrak: Para ahli telah banyak melakukan riset tentang e-learning, terutama riset mengenai e-learning sebagai alat bantu belajar-mangajar, riset tersebut masih bersifat parsial belum menyeluruh. Penelitian ini bertujuan untuk mengetahui Bagaimana merancang-bangun suatu program e-learning dan apa peran e-learning dalam pembelajaran Fisika Dasar, terutama perannya sebagai penyampai materi ajar sekaligus sebagai pengajar. Hal ini menjadi penting karena adakalanya dosen berhalangan hadir, namun mahasiswa harus tetap belajar, hal tersebut dapat dibantu dengan program e-learning. Tulisan ini memaparkan kegiatan pengembangan Program elearning yang mencakup analysis, design, coding, dan testing, serta peran e-learning dalam belajar-mengajar Teknik pengumpulan sampel menggunakan total sampling dengan jumlah mahasiswa 80 orang terdiri dari mahasiswa S1 pendidikan kimia angkatan 2014/2015 dan 2015/2016. Hasil penelitian menunjukkan bahwa, Program e-learning diimplementasikan melalui modul-modul e-learning, peran e-learning berada pada kategori “cukup berperan” skor 3,44 (Skala 1-5). Sedangkan hubungan Program e-learning dengan perannya dalam pembelajaran Fisika Dasar berdasarkan mean teoritis untuk kategori sedang + tinggi/kuat + sangat tinggi/kuat sebesar 91,25%, sedangkan kategori rendah/lemah sebesar 8,75%. Bila berdasarkan mean realistis kategori sedang + tinggi/kuat + sangat tinggi/kuat sebesar 76,25%, sedangkan kategori rendah/lemah + sangat rendah/lemah sebesar 23,75%. Kata kunci: E-leaning, pembelajaran Fisika , Fisika Dasar

F3 -

Dynamics of Glucose and Insulin on the Human Body Using Modified Oral Minimal Model AgusKartono, Egha Sabila Putri, ArdianArif Setiawan Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Kampus IPB Dramaga, Bogor 16680, Indonesia; email: [email protected]

Abstract: Mathematical Model is an interesting tool to know the process of disease working. In the type 2 diabetes case, many mathematical models have been developed to better understand the governance mechanisms of glucose-insulin system. However, the most model famous was Bergman Minimal Model (BMM) SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

1

Kumpulan Abstrak Kelompok Fisika (F) that contains a little number of parameter but has better accuracy than the other models. Bergman Minimal Model widely used in physiological research to estimate the glucose effectiveness (SG) and insulin sensitivity (SI) from the intravenous glucose tolerance test (IVGTT) dataduring a given period. However, IVGTT test does not reflect condition of the human body in the state of daily. Hence, the oral glucose tolerance (OGTT) data used to replace theIVGTT data. In this research, we are going to modify the BMM modelwith the oral minimal model (OMM)to explain the dynamics of glucose and insulin on the human body. Keywords: Bergman Minimal Model, glucose effectiveness, insulin sensitivity, oral minimal model

F4 -

PENGARUH PENGGUNAAN BAHAN AJAR MENGINTEGRASIKAN MSTBK BERBASIS ICT DALAM PEMBALAJARAN FISIKA DI KELAS XI SMA Akmam , Harman Amir, Asrizal FMIPA Universitas Negeri Padang, [email protected]

Abstract: Physics teaching materials for Senior High School that supporting the development of human resources that is able to adapt to any changes, to solve complex problems, creative thinking and familiar with information technology has not been widely available in senior high schools in West Sumatra. Based on the above, research that aims to determine the effectiveness of the use of Physics teaching materials that integrates Mathematics, Science, Technology, natural disasters, and the noble character (MSTBK) on WEB for Senior High School grade XI and to determine the effect of the use of teaching materials MSTBK on the learning outcomes of high school students in class XI. The quasi-experiment design research was comparing the learning outcome before and after the state of the object being treated. The treatments were using physics teaching materials that developed for teaching learning in Senior High School grade XI. The experiment was conducted at five senior high schools in West Sumatra were divided into 3 levels. The data were analyzed by using a statistical product moment and Anova. The research showed that the physics teaching materials that developed are effectively to improve student learning outcomes in Senior High School grade XI in West Sumatera with a correlation coefficient (r xy) = 0. 31. Levene Statistic showed the average of the learning outcomes of high school students in grade XI was different, but yet rules Tukey HSD and Bonferroni statistics show that there are not significantly at a significance level of 0.05 in West Sumatra Keywords: MSTBK, Teaching material ,integrated, competence

F5 -

Pembuatan dan Karakterisasi Magnet Permanen BaFe12O19 Dengan Penambahan Aditif TiO2Al2O3 Aldi Setia Utama Universitas Sriwijaya

Abstrak: Magnet permanen BaFe12O19 telah dilakukan dengan TiO2-Al2O3 sebagai doping dengan metode mechanical alloying. Konsentrasi TiO2-Al2O3 adalah x = 0; 4; 6; 8; 10% mol. bahan baku (BaFe12O19, TiO2, Al2O3) milling oleh HEM (High Energy Milling) selama 2 jam dan pemanasan dengan 1000 C selama 24 jam. Serbuk dicampur dengan Celuna (2% dari berat sampel)-dipadatkan dengan 3500 kgF/cm2 selama 1 menit dan sintering dengan 11500C selama 2 jam. Analisis X-Ray Diffraction (XRD) menunjukkan perluasan unit heksagonal sel BaFe12O19. Analisis Scanning Elektron Microscope (SEM) menunjukkan penurunan ukuran partikel setelah di doping dengan TiO2-Al2O3 dengan ukuran tidak homogen. Pengujian permagrph menunjukkan penurunan medan koersivitas dengan konsentrasi TiO2-Al2O3 semakin meningkat (3,61-3,48 kOe). Tetapi di 10% Medan koersivitas meningkatkan ke 3,63 kOe karena tidak semua ion Ti-Al tersubtitusi untuk ion Fe. Pengujian gaussmeter menunjukkan semakin tinggi konsentrasi TiO2-Al2O3 menyebabkan penurunan Medan magnet (787,7-596,7 Gauss) Kata kunci: BaFe12O19, mechanical alloying, magnet permanen, TiO2-Al2O3

F6 -

PENGARUH WAKTU PENYINARAN DAN JARAK SUMBER RADIASI FILM TERHADAP DENSITAS DAN Ug Ana Rohmani1), Ramlan1), Hadir Kaban1), Lulut Raidayanto2), dan Achmad Yani2) 1Jurusan Fisika FMIPA Universitas Sriwijaya, Palembang, Sumatera Selatan, Indonesia, e-mail: [email protected], 2Staff PT. SUCOFINDO Cabang Palembang, Sumatera Selatan, Indonesia.

Abstrak: Telah dilakukan penelitian tentang Pengaruh Jarak Sumber Radiasi Pada Film (SFD) dan Waktu Penyinaran Terhadap Densitas Dan Ug (Unsharpness Geometry) pada Baja Karbon dengan Radiografi Gamma dengan tujuan untuk menganalisis perbandingan nilai densitas dan Ug (Unsharpness Geometry) pada bahan Baja Karbon untuk jarak sumber ke film yang tetap dengan waktu penyinaran yang berbeda dan jarak sumber ke film yang berbeda dengan waktu penyinaran yang tetap. Hasil Penelitian ini menunjukkan Pengaruh waktu penyinaran terhadap densitas dapat disimpulkan bahwa D 185 detik > D 173 detik > D 163 detik > D 152 detik, artinya semakin lama waktu penyinaran maka akan menghasilkan nilai densitas yang lebih besar. Sedangkan 2


Kumpulan Abstrak Kelompok Fisika (F) pengaruh SFD terhadap Ug dapat dilihat dari Perbandingan Nilai Ug pada jarak sumber radiasi ke Film (SFD) yang berbeda. Terlihat bahwa Ug dengan SFD 400 mm bernilai lebih kecil dibandingkan dengan SFD 300 mm, artinya semakin jauh jarak sumber radiasi ke Film (SFD) maka Ug yang dihasilkan akan semakin baik. Kata kunci: SFD , Waktu Penyinaran, Densitas , Ug , Baja Karbon

F7 -

PEMBUATAN HIBRID BONDED MAGNET Nd2Fe12B-BaFe12O19 SERTA KARAKTERISASINYA Andhika Dwipanur Priya Utama[1], Ramlan[1], dan Muljadi[2] [1]

Jurusan Fisika FMIPA Universitas Sriwijaya,Palembang, Sumatera Selatan, Indonesia, Email: [2] [email protected], Staff Pusat Penelitian Fisika-LIPI, komplek PUSPITEK, Tangerang Selatan, Indonesia

Abstrak: Telah dilakukan penelitian proses pembuatan hibrid bonded magnet NdFeB-Barium heksaferit. Hibrid bonded magnet ini menggunakan serbuk magnet NdFeB komersil tipe MQP-B+10118-70 dan barium heksaferit komersil serta epoxy resin sebagai bindernya. Serbuk barium heksaferit dikalsinasi pada suhu 10000C. proses pencampuran menggunakan magnetic stirrer selama 3 jam kemudian dikeringkan. Campuran bahan tersebut selanjutnya dicetak. Kemudian divakum pada suhu 1150C. karakterisasi yang diuji meliputi sifat fisis (densitas dan ukuran partikel), sifat magnet menggunakan gaussmeter dan Permgraph, serta karakterisasi morfologi menggunakan SEM. Dari hasil analisis PSA didapatkan distribusi ukuran partikel NdFeB 50% sebesar 46.36 μm barium heksaferit 39.12 μm sedangkan densitas didapatkan nilai densitas maksimum sebesar 4.88 g/cm3. Dari sifat magnet didapatkan nilai gauss terbaik sebesar 1009.7 G dari permagraph didapatkan nilai koersivitas maksimum sebesar 6.359 kOe, nilai remanensi maksimum sebesar 2.81 kG dan energy produk maksimum 1.592 MGOe. Dari morfologi SEM terlihat persebaran barium heksaferit cukup merata.

F8 -

STUDI KONDUKTIVITAS TANAH AKIBAT PENAMBAHAN PUPUK ANORGANIK UNTUK PENGEMBANGAN SENSOR KELEMBABAN TANAH Andi Putra Sairi, Samsidar, Bayu Hadi Saputro, dan Fandi Oktasendra Fakultas Sains dan Teknologi, Universitas Jambi; email: [email protected]

Abstract: The level of soil moistures and the addition of inorganic fertilizers become a reference for farmers in order to increase their agriculture crops. The moisture level is necessarilymeasured by using a moisture sensor. In this research, a study on the value of soil conductivity of inceptisolcaused by the addition of inorganic fertilizers as the development parameters for the soil moisture sensor has been done. Inorganic fertilizers with percentages of 0.5 %, 1% and 2% were added to the inceptisol having different moisture levels andthe soil conductivity weremeasured accordingly. The quantitative analysisresults showed that the value of soil conductivity increases with the addition of inorganic fertilizers. Hence, the value ofsoil conductivity becomes an important parameter in the development of soil moisture sensor. Keywords: Conductivity, Moisture, Sensor

F9 -

PENERAPAN MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN BERFIKIR KRITIS MAHASISWA PRODI PENDIDIKAN FISIKA FKIP-UNIB PADA MATA KULIAH TERMODINAMIKA Andik Purwanto Program Studi Pendidikan Fisika FKIP-UNIB

Abstrak: Mata kuliah Termodinamika merupakan salah satu cabang ilmu fisika yang mempelajari fenomena atau gejala alam yang terjadi di kehidupan sehari-hari, khususnya tentang panas dan perpindahannya. Pembelajaran matakuliah Termodinamika sering kali menimbulkan permasalahan karena tidak tepatnya dalam pemilihan metode pembelajaran, sehinggakurang mampu mengoptimalkan proses pembelajaran yang pada akhirnya akan menyebabkan pengembangan kemampuan berfikir kritis mahasiswa kurang.Peningkatan kemampuan berfikir kritis selalu dipengaruhi banyak faktor, salah satu faktor yang mempengaruhi ialah pemilihan metode pembelajaran. Dalam penggunaan metode pembelajaran seorang dosen dapat memilih model pembelajaran yang inovatif, yang mana akan membantudosen dan mahasiswa dalam meningkatkan kemampuan berfikir kritis. Salah satu model pembelajaran yang bisa membuat mahasiswakritis dalam proses pembelajaran adalah dengan menggunakan model Problem Based Learning. Penelitian ini bertujuan untuk meningkatkan kemampuan berfikir kritis mahasiswaProdi Pendidikan Fisika FKIP-UNIB pada mata kuliah Termodinamika melalui penerapan model Problem Based Learning. Penelitian dilakukan dengan penelitian tindakan kelas (PTK) yang dilakukan dalam tiga siklus. Subjek dalam penelitian ini adalah seluruh mahasiswaProdi Pendidikan Fisika FKIP-UNIB semester 3 Tahun Akademik 2015/2016.Instrumen yang digunakan lembar tes untuk mengukur kemampuan berfikir kiritis.Analisis data tes dilakukan dengan statistik deskriptif. Berdasarkan hasil penelitian dan pembahasan, diperoleh kesimpulan bahwa: (1) Penerapan model Problem Based Learning pada konsep Suhu, Kalor, dan Perpindahan Kalor dapat meningkatkan aktivitas belajar Mahasiswa terbukti pada siklus I skor rata-rata aktivitas belajar Mahasiswa 24,00 dengan kategori baik, meningkat pada siklus II yaitu 27,00 dengan kategori baik dan SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

3

Kumpulan Abstrak Kelompok Fisika (F) meningkat lagi pada siklus III 28,50 dengan kategori baik. (2) Penerapan model Problem Based Learning pada konsep Suhu, Kalor, dan Perpindahan Kalor dapat meningkatkan kemampuan berfikir kritis. Untuk siklus I ketuntasan belajar pengetahuan 78,12% siklus II 87,50% siklus III 96,87%. Kata kunci: Model problem based learning, peneltian tindakan kelas, kemampuan berfikir kritis.

F10 -

IDENTIFIKASI POTENSI PANAS BUMI DARI KANDUNGAN SILIKA MATA AIR PANAS SENTRAL, SUMATERA BARAT Ardian Putra, Ridhovi Endovani, dan Eko Budi Nugroho Laboratorium Fisika Bumi, Jurusan Fisika, FMIPA Universitas Andalas, Kampus Unand Limau Manis, 25163, Padang, email: [email protected]

Abstract: The silica brought by hot spring is an important parameter to estimate the geothermal reservoir. The identification of silica content of hot spring and its silica terrace at Sentral hot spring, Alam Pauah Duo, Solok Selatan, West Sumatera, has been carried out. The silica content of hot spring is tested by using spectrophotometer, and the average data obtained from 6 points is 3.741 ppm. Silica gothermometer equation will be used to estimate the reservoir temperature. The silica content of silica terrace appearing in white and yellowish colour is observed by X-Ray Fluoresense (XRF) method. It shows that silica contained in silica terrace is 84.305 % on average. Based on this research, it can be be identified that silica terrace is formed from the silica brought by hot spring. Keywords: silica, hot spring, silica terrace, geothermal

F11 -

HUBUNGAN UKURAN BUTIR MINERAL MAGNETIK DAN SUSEPTIBILITAS MAGNETIK PASIR BESI PANTAI SUNUR PARIAMAN SUMATERA BARAT Arif Budiman, Frizky Norman, Dwi Puryanti Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas; email: [email protected]

Abstract: The Research was conducted to determine the relationship between the grain size of magnetic minerals and magnetic susceptibility of iron sand of Pantai Sunur Pariaman Sumatera Barat. Iron sand was taken at location with geographic coordinates 99.25º East and 0.63º South. Based on the size of the grain, iron sands are grouped into five. They are above 0.850 mm, between 0.425 and 0.850 mm, between 0.180 and 0.425 mm, between 0.150 and 0.180 mm and below 0.150 mm. Magnetic minerals was obtained by separating the mineral content of magnetic and non-magnetic using a bar magnet. Value of magnetic susceptibility was measured by using MS2 Bartington Magnetic Susceptibility Meter. The results showed that the value of mineral magnetic susceptibility of the grain size of the greatest to the least in a row is 197.8×10-8 m3/kg, 273.5×10-8 m3/kg, 461.7×10-8 m3/kg, 1371.8×10-8 m3/kg, and 4888.0×10-8 m3/kg. Susceptibility value increases with decreasing grain size of magnetic minerals of iron sand. Keywords: grain size, magnetic minerals, susceptibility.

F12 -

ANALISIS SINYAL SUARA JANTUNG (PHONOCARDIOGRAM) MENGGUNAKAN DIMENSI FAKTAL Arif Surtono, Nawira, dan Amanto FMIPA Universitas Lampung; Email : [email protected]

Abstract: It has been conducted research on heart sound signal analysis using fractal dimension. Heart sounds types used are normal, aortic regurgitation, aortic stenosis, mitral regurgitation, mitral stenosis and patent ductus arteriosis. Heart sound signals is assumed as a fractal phenomenon which has similarities in minimized scale like a natural fractal. Fractal dimension values in biomedical signal analysis can be new methods of feature extraction than the conventional methods that are usually analyzed in time and frequency domain. The fractal dimension is calculated using box counting methods. Heart sound signals only within one heart cycle for fractal dimension calculation. The results show that different types of heart sound signals have different fractal dimension value.

F13 -

Survey GPS geodetik untuk pengamatan deformasi Sesar Sumatera di daerah Sumatera Barat Ashar Muda Lubis1), Iwan Hermawan2), Rio Saputra1), Emma Hill2), Kerry Sieh2), Feng Lujia2) and Nugroho Hananto3) 1)

Physics Department, University of Bengkulu, WR Supratman street, Kandang Limun, Bengkulu, 38371, Indonesia, email: [email protected]; 2)Earth Observatory of Singapore, Nanyang Technological University, 50 Nanyang Avenue, Block N2-01a-15, Singapore, 639798; 3)Lembaga Ilmu Pengetahuan Indonesia, Puslit Geoteknologi. JL. Sangkuriang, Kompleks LIPI, Bandung 40135, Indonesia

4


Kumpulan Abstrak Kelompok Fisika (F) Abstract: Hitherto the information on slip rate, segmentation and potency for future earthquake along the Sumatra Fault Zone (SFZ) in West Sumatra region is poorly known. This research aims to estimate vector deformation along the SFZ in West Sumatra region using Global Positioning System (GPS) method, particularly at Sianok, Sumani and Suliki segments where historically the great earthquakes occurred in 1926 (Ms=7.0), 1943 (Ms=7.4), and in 2007 (Mw= 6.5). In this research, we have installed 26 GPS monuments in West Sumatra region. Data acquisition had been performed by utilizing GPS Receiver Trimble NetRS. Field observation data were converted into RINEX file before we processed using GAMIT/GLOBK software in order to obtain daily position for each GPS stations. The daily solutions for campaigns sites are still too premature to be used for estimating slip rate, but in preliminary results for the semi-permanent stations we may see our first measurements of deformation. From three times GPS campaign-surveys mode we may estimate a signal deformation of ~25 mm/yr. More data from future survey campaigns will help us to estimated revised slip rates for this area of the SFZ. This estimation is important for future hazard assessment, mitigation and planning purposes in the region. Keywords: Sumatra fault zone, Segment, Deformaation, GPS, slip rate

F14 -

NANOPARTICLES FLAVONOIDS OF AVOCADO SEED AS ACTIVE COMPOUND OF SUNSCREEN IN COSMETICS Asma Hanifah, Siti Nikmatin, dan Fitri Fauziah FMIPA, InstitutPertanian Bogor; Email: [email protected]

Abstract: Sunlight is the biggest source of energy for survival of living beings. But, the over exposure on the skin provides negative effect depends on the frequency and duration of sunlight exposure on the skin. Therefore, in need of sunscreen formulation for decreasing negative effect of sunlight. One of them is avocado seed. This material is the waste that is not used optimally. One of avocado seed contains that function as antioxidants are flavonoids. Nanotechnology has the advantage of increasing the effectiveness of sunscreens. In this research, the avocado seed extraction using homogenization and ultrasonic methods to obtain optimization size of nanoparticlesflavonoids. Optimization size obtained at 1179.83 nm (A4) with a homogenizer and 791.17 nm (B4) with ultrasonic.Samples optimum of active compound content characterized using IR spectrum and UV-vis. Result showed both samples contain active compounds flavonoids kind of kalkon. Determination of the effectiveness of sunscreens by calculating the sun protection factor (SPF) used UV-vis spectrophotometer and made the series a concentration of 5%, 10%, 15%, 20% and 25%. The result showed that the nanoparticles flavonoids avocado seed extract may provide minimal protection in the UV-B and UV-A. Keywords: Avocado seed, Flavonoid, Homogenization, Ultrasonic, Sunscreen.

F15 -

RANCANG BANGUN INSTRUMEN MONITORING LAJU PERNAPASAN MANUSIA MENGGUNAKAN ARDUINO DAN GUI MATLAB Bayu Hadi Saputro dan Sri Oktamuliani Fakultas Sains dan Teknologi, Universitas Jambi; email: [email protected]

Abstract: The prototype instrument has been built for monitoring human respiratory rate using Arduino and GUI Matlab display. Respiratory rate is the most important parameter in determining the health status of patients at the hospital. The basic principle of the instrument is counting the number of breaths per minute based on the temperature of the air coming out from the nose. Instrumentation system consists of LM35 sensor, signal conditioner, Arduino and Matlab. Respiratory rate information are displayed in digital and graphs in real time. The results indicate that the instruments have an accuracy rate of 97.5% and the measurement range of 20oC 50oC. Keywords: Respiratory rate, LM35 sensor, Arduino, Matlab

F16 -

MAPPING OF PEAK GROUND ACCELERATION (PGA) USE KANAI AND KATAYAMA METHODS FOR EARTHQUAKE HAZARD MITIGATION IN THE REGENCY OF NORTH BENGKULU Budi Harlianto Department of Physics Science,University of Bengkulu, Bengkulu City; [email protected] (Gedung BS Jl. WR. Supratman Kandang Limun Bengkulu 38371A, telp. (0736) 20919; 21170 pes.208 fax. (0736) 26873)

Abstract: We report the mapping of Peak Ground Acceleration (PGA) using the method of Kanai and Katayama based on data microtremor in North Bengkulu. This study was conducted to map the distribution of the value of the PGA, which is one factor contributing to the influence of local geology (local site effect) during an earthquake. Mikrotremor data measurement was performed using three-component seismometer of type DS-4A at 29 measurement points. The data were analyzed by the method of Horizontal to Vertical Spectral Ratio (HVSR). PGA value calculation is done by using two empirical equations, the first using Kanai equation and the second equation Katayama, parameter dominant period used in the calculation were obtained from data SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

5

Kumpulan Abstrak Kelompok Fisika (F) analysis mikrotremor. The results showed that the distribution of PGA values in the region of North Bengkulu is calculated using equations Kanai ranged from 152.44 to 674.39 gal gal, whereas the results of calculations using the equations Katayama ranged from 35.19 to 51.27 gal gal. PGA low value contained in the District Ketahun and Putri Hijau, while the value of PGA were highest in the District Giri Mulya, Ketahun and Lais experiencing severe levels of damage due to the earthquake September 2007. Keywords: Microtremor, PGA, Method Kanai, Katayama, North Bengkulu

F17 -

KAJIAN PENDAHULUAN PENGGUNAAN OER PADA MATAKULIAH FISIKA DASAR PS KIMIA UNSRI Dedi Setiabudidaya, Ramlan, dan Akmal Johan FMIPA, Universitas Sriwijaya; email: [email protected]

Abstract: This paper discusses the use of Open Educational Resources (OER) at Sriwijaya University. College Physics, an OpenStax textbook was adopted as the textbook for the Basic Physics course for chemistry students class B since the academic year 2015/2016. In the second semester, the class is also participated in implementation pilot project of Concept Coach, a free tool to increase textbook reading comprehension. The use of this open textbook benefit the students financially although they have to struggle with the written English language.

F18 -

PENERAPAN MODEL PROBLEM BASED LEARNING (PBL) UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH FISIKA SISWA PADA MATERI FLUIDA DI KELAS XI IPA SMA NEGERI 5 KOTA BENGKULU Dedy Hamdani, Rosane Medriati, dan Endah Juniarti Fakultas Keguruan dan Ilmu Pendidikan, Universitas Bengkulu; email: [email protected]

Abstract: The research is a classroom action research that is carried out in three cycles aims to determine the increase of student learning activity, student learning outcomes, and student problem-solving skills to the physics concept of fluid. The subjects in this research were all of students of class eleven science totaling 35 people. Data obtained from tests and observation sheet were analyzed using descriptive statistics. This research was conducted in four stages that are plan, action, observation, and reflection. The results showed that the average score of student learning activity in the first, second and third cycles were 36.5; 38.5 and 40.5 respectively with all are in the good category. The average score of student learning outcomes in cognitive aspect in the first cycle were 88.35 and 91.72% of mastery learning (completed); in the second cycle were 88.45 and 97.22% of mastery learning (completed); in the third cycle were 88.46 and 97.22% of mastery learning (complete). The average score of student learning outcomes in the psychomotor aspects in the first and the second cycles were 71.5 and 78.6 respectively both in enough category, while in the third cycle were 80.5 in good category. The average score of student problem solving skills in the first, the second and the third are 60.82; 70.02 and 77.66, respectively. Generally, the impelementation of problem based learning model can increase student learning activities, student learning outcomes and student problem solving skills. Keywords: student learning activities, student learning outcomes, problem solving skills, problem based leaning.

F19 -

Marine Loading Arm Control System Upgrade (Case Study Loading Dock No 2 PT Badak NGL) Defta Harmiawan ST. MT. PT. Badak Natural Gas Liquefaction, Bontang, East Kalimantan, Indonesia, Phone: +62-548-553863; Fax: +62-548-552234, Email : [email protected]

Abstract: PT. Badak NGL is a natural gas liquefaction company located in Indonesia operates eight liquefaction plants (Train A~H) with maximum LNG production capacity 22,5 MTPA. PT Badak NGL operates 3 unit Jetty for loading LNG to ships. Loading dock no 1 was built since 1978, loading dock no 2 was built in 1988 following train E construction, and loading dock no 3 was built in 1999 during Train H contruction. Since 2012 PT Badak NGL only operates 2 Jetty since loading dock no 3 has been put into mothball state due to lower shipment frequency. Since its construction, loading dock no 2 use relay sytem for marine loading arm control system. The system has operated without any significant issues arise during loading. As new technology developing the relay control system becomes obsolete, this issue requires PT Badak NGL to retrofit the relay control system to the latest control system. PLC is being decided to replace the relay control, with more reliable and easy to handle control system, PLC also has faster response among other type of control system such as DCS. The relay control system replacement is targeted to have no modification on function and features. The loading operational still uses the same procedure with relay control system which make operator do not have to learn or change their operating procedure to operate the marine loading arms. 6


Kumpulan Abstrak Kelompok Fisika (F) Convertion of relay logic system to PLC control system is the critical path of the retrofit project. PT Badak works together with the application engineer to ensure the logic creation has the same function as before, especially the ESD function and communication function with other devices. The PLC needs to communicate with DCS for information and initiates ESD for loading pump and hydraulic control system to maintain the loading arm hydraulic pressure and control the loading arm movement. The retrofit project completes within 30 days. The project is succesfully done without accident and or human error. The Jetty is fully operated and running without problems. Keywords: relay system, marine loading arm, PLC.

F20 -

PENGARUH PENAMBAHAN LLDPE TERHADAP KARAKTERISTIK HDPE UNTUK APLIKASI ROTAN SINTETIS Diana Pungki[1], Ramlan[1], Akmal Johan[1], dan Ihsan Safari[2] [1] [2]

Jurusan Fisika FMIPA Universitas Sriwijaya, Palembang, Sumatera Selatan, Indonesia. email: [email protected], PT Lotte Chemical Titan Nusantara, Cilegon, Banten, Indonesia. email: [email protected]

Abstrak: Telah dilakukan penelitian blending HDPE dan LLDPE berbentuk biji plastik untuk aplikasi rotan sintetis. Kemudian dilelehkan dengan mesin Blow molding pada kecepatan motor 600 rpm dan temperatur 185ᵒC dan dibuat plaque dengan ketebalan tertentu menggunakan mesin Hot press pada temperatur 177ᵒC dan ditahan selama 20 menit. Penelitian dilakukan bertujuan untuk mengetahui blending terbaik dari HDPE dan LLDPE dengan variasi perbandingan komposisi HDPE (100%), LLDPE (100%), HDPE (90%) : LLDPE (10%), HDPE (80%) : LLDPE (20%), HDPE (70%) : LLDPE (30%), yang memiliki sifat mekanik lebih baik dan pengaruh penambahan LLDPE terhadap sifat mekanik HDPE untuk aplikasi rotan sintetis. Sehingga dianalisa : Hardness, Kuat impak, Flexural, WIYI dan aging, FTIR, Melting point, Melt index, dan Density. Agar tercapai kekuatan rotan sintetis yang lentur dan lebih ulet atau elastis, maka diperlukan material yang elastis dan ulet agar tidak mudah patah. Perbandingan HDPE dan LLDPE (70%:30%), menunjukkan sifat mekanik material yang lebih baik atau optimum untuk aplikasi rotan sintetis. Kata kunci: Rotan Sintetis, HDPE, dan LLDPE.

F21 F22 -

INTERPRETASI JENIS DAN SEBARAN MINERAL MENGGUNAKAN METODE GEOLISTRIK INDUCED POLARIZATION (IP) Ahmad Fauzi , Mahrizal, Syafriani, dan Novita Sari Jurusan Fisika FMIPA Universitas Negeri Padang; [email protected]

Abstrak: Salah satu metode geofisika yang dapat digunakan untuk menyelidiki jenis dan sebaran mineral di bawah permukaan adalah metode geolistrik Induced Polarization (IP). Metode ini sangat sensitif terhadap perubahan kandungan mineral berdasarkan nilai chargeability. Tujuan penelitian adalah mengetahui jenis dan sebaran mineral pada posisi dan kedalaman tertentu di daerah penelitian. Jenis penelitian adalah penelitian dasar yang bersifat deskriptif. Penelitian dilakukan di daerah Bukit Lantiak, Kota Padang memotong dua lintasan berarah timur barat. Pengumpulan data dilakukan menggunakan alat Automatic Resistivity System ARES. Analisa dan interpretasi data berbantuan software Res2dinv. Hasil penelitian menunjukkan bahwa terdapat tiga jenis mineral penyusun batuan pada kedua lintasan yaitu Magnetite, Bornite dan Copper. Mineral-mineral ini tersebar pada berbagai posisi dan kedalaman.

F23 F24 -

STUDI INTER-DIFUSI ALUMINIUM PADA HASTELLOY DAN LAPISAN ELECTROPLATING NIKEL Dwi Oktarina[1], Ramlan[1], Ahmad Afandi[2], Kemas Ahmad, dan Zaini Thosin[2] [1] [2]

JurusanFisika FMIPA UniversitasSriwijaya, Palembang, Sumatera Selatan, Indonesia; E-mail: [email protected], PusatPenelitianFisika-LIPI, Komplek PUSPIPTEK, Tangerang Selatan, Indonesia; E-mail: [email protected]

Abstract: Ni-based super-alloys have been widely utilized for the high temperature application such as hot sections of gas turbine engines. The intrinsic problems of the materials exposed at high temperature are creep rupture, and material degradation due to oxidation and hot corrosion. The common solution improving oxidation and hot corrosion resistance is protecting the base material with oxide layers. In this research hastelloymaterials underwent two step of coatings, namely Al-pack cementation (Al-pack), and Ni-electroplating. Al-pack was conducted with the mixing powder of 80 wt% Al2O3, 15 wt% Al, and 5 wt% NH4Cl. The sample was immersed in the alumina tube mixed with powders, and heated up in the inert furnace at 800℃ for 7h. SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

7

Kumpulan Abstrak Kelompok Fisika (F) Subsequently, the electroplating was done with Ni-strike and Ni-watts solution having respectively current density of 500 mA/ cm2 for 30 seconds, and 20 mA/cm2 for 60min. After the process was completed, the sample underwent heat treatment at 900℃ for 10 h, to allow inter-diffusion between Al and Ni. The sample was characterized under Scanning Electron Microscopy (SEM) and EDS (Energy Dispersive Spectroscopy) to mapping out the atoms mobility, and it was found the hardness improved significantly. Keywords: Dual layer coating, Ni-Al, Al-Pack cementation, Ni-electroplating

F25 -

ANALISIS KARAKTERISTIK ANOMALI FREKUENSI KRITIS DI LAPISAN E DAN F IONOSFIR GEMPA MENTAWAI 25 OKTOBER 2010 Dwi Pujiastuti1, Desi Indriani1, Ednofri2, dan Badrul Mustafa3 1

Jurusan Fisika Universitas Andalas Padang; email: [email protected], 2SPD LAPAN Kototabang, 3Jurusan Teknik Sipil Universitas Andalas Padang

Abstrak: Telah dilakukan analisis kualitatif untuk melihat perbandingan frekuensi kritis lapisan E dan F ionosfir untuk gempa Mentawai pada tanggal 25 Oktober 2010. Data ionosfir yang digunakan berasal dari hasil rekaman ionosonda FMCW, LAPAN Kototabang, Sumatera Barat berupa ionogram. Parameter yang digunakan dalam penelitian ini adalah frekuensi kritis lapisan E, Es, F1 dan F2 ionosfir. Proses scaling ionogram dilakukan terlebih dahulu untuk mendapatkan nilai harian fo pada masing-masing lapisan. Dari hasil scaling didapatkan nilai median untuk menentukan nilai batas atas dan batas bawah. Prekursor akan terlihat apabila nilai median melebihi batas atas atau batas bawah di masing masing lapisan. Anomali yang akan diteliti lebih lanjut adalah anomali yang terlepas dari aktivitas matahari dan badai geomagnetik yang dapat dijadikan sebagai data pembanding terhadap hasil pengolahan data ionogram tersebut. Dari keempat lapisan hanya ditemukan anomali fo pada lapisan Es dan F2 . Anomali awal yang diprediksi sebagai prekursor gempa ditemukan 5 hari sebelum gempa dengan total kemunculan sebanyak 6 kali pada lapisan Es dan F2. Dari analisis yang telah dilakukan, didapatkan ketidaksamaan respon yang terjadi pada masing-masing lapisan ionosfir. Penyebab terjadinya ketidaksamaan respon diduga karena perbedaan jarak masing-masing lapisan ionosfir terhadap matahari berbeda. Kata kunci: frekuensi kritis, ionosfir, ionosonda FMCW, ionogram, prekursor gempa bumi

F26 -

EFFECT OF POLYETHYLENE GLYCOL ON THE Fe3O4 CRYSTAL SIZE SYNTHESIZED WITH COPRECIPITATION METHOD Dwi Puryanti1, Irfan Nursa2 Jurusan Fisika FMIPA Universitas Andalas, Padang, Kampus Unand Limau Manis, Pauh Padang 25163, Sumatera Barat, Indonesia, e-mail: [email protected]

Abstract: Synthesis of Fe3O4 particles was performed using coprecipitation method. Iron sand base material obtained by processing the iron rocks by means of destruction and extraction. Iron rocks were taken from the village Surian, South Solok of West Sumatera. Iron sand that has been extracted reacted with HCL and NH 4OH. Furthermore, the polyethylene glycol (PEG)-2000, 4000 and 6000 were added to see its effect on the resulting crystal size Fe3O4. Variation in the composition ratio of iron sand and PEG is 1:1. Microstructure of materials were studied using x-ray diffraction (xrd) technique. XRD characterization results showed that the presence of spinel structure of Fe3O4. The results of crystallite size of particles showed that the smallest crystallite size produced by the addition of PEG-6000 and the largest crystallite size produced by the addition of PEG-2000. Keywords: Fe3O4, iron sand, PEG

F27 -

Pemodelan Transmitansi Elektron Dioda Terowongan Sambungan p+-n+ Berbasis GaAs dengan Menggunakan Metode Non-Parabolik Eka Suarso Prodi. Fisika, FMIPA Univ. Lambung Mangkurat Banjarbaru-Kalsel, email: [email protected]

Abstract: An analytical expression of electron transmittance through a p+-n+-GaAs tunnel junction diode has been derived by using a parabolic and non-parabolic energy dispersion relationships. The calculated results show that the electron transmittance is affected by an incident energy of electron, energy gap, bias voltage, and depletion width. It is also shown that the electron transmittance increases as the bias voltage and electron energy increase. As the energy gap and depletion width increase, the electron transmittance decreases. Moreover, the electron transmittances calculated by using both of non-parabolic relationship and parabolic one have the same values for low electron energy. Keywords: Electron transmittance, tunnel diode, non-parabolic disperse relationship

8


Kumpulan Abstrak Kelompok Fisika (F)

F28 -

Karakteristik Asphalt Concrete Dengan Bahan Pengisi Abu Vulkanik Gunung Sinabung Erna Frida1) Nurdin Bukit2) Parmin Dailon1) 1)

Fakultas Teknik Universitas Quality Medan, email : [email protected]; 2)FMIPA Universitas Negeri Medan

Marshall test has done characteristics Mixed Asphalt Concrete (AC) with filler Volcanic Ash Mount Sinabung in order to determine the effect of Volcanic Ash on Asphalt Concrete pavement and to determine the effect of replacement filler Volcanic Ash on the value characteristics marshall test eligible Revision No. 1737-1989-f. This study uses a 6% Asphalt levels and levels of Volcanic Ash 0%, 25%, 50%, 75%, 100%, testing using equipment Marshall test. From the research results of the test Marshall test using a mixture of Asphalt Concrete Filler Sinabung Volcanic Ash affect the results of stability and even exceed 100% of the stability of Stone Ash but did not qualify, SNI 03-1737-1989 Keywords :Volcanic Ash, Asphalt Concrete ,Marshall test

F29 -

Karakterisasi Nanopartikel Abu Sekam Padi Dengan Menggunakan Metode Kopresipitasi Eva Marliana Ginting, Karya Sinulingga, Mukti Hamzah Harahap ,Irma Suryani Siregar, Nurdin Bukit Prodi Fisika FMIPA Universitas Negeri Medan; E-mail: [email protected]

Abstrak: Tujuan penelitian ini adalah pembuatan nano partikel abu sekam padi (ASP) dan karakterisasi sifat nano partikel dengan metode kopresipitasi.ASP yang akan dipreparasi diperoleh dari kilang padi hasil pembakaran yang memiliki warna putih .Metode yang dilakukan dalam pembuatan nano partikel dengan cara ASP di Ball mill selama satu jam untuk mendapatkan ukuran 200 mesh kemudian di sintesis dengan larutan HCl 2 M , NaOH 2.5 M dengan metoda kopresipitasi sehingga diharapkan diperoleh nano partikel ASP kemudian dilakukan karakterisasi yakni dengan analisa komposisi dengan alat X-Ray Floresensi (XRF), analisa morfologi dengan Scaning Electron Microscofe (SEM) , analisa struktur X-Ray Difraction (XRD), . Hasil analisis dengan XRD diperoleh ukuran atom kristal ASP 4,4 nm dengan sistim kristal Tridymite SiO 2 ,Triclinic, F1 (1), hasil analisis dengan XRF diperoleh kandungan SiO2 yang dominan . Kata kunci: Abu sekam padi, sodiun silikat , kopresipitasi

F30 -

PENGAPLIKASIAN METODE FUNGSI AIRY PADA PERMASALAHAN PROBABILITAS TEROBOSAN KUANTUM Fandi Oktasendra Fakultas Sains dan Teknologi, Universitas Jambi; email: [email protected]

Abstrak: Pada penelitian ini, metode fungsi Airy digunakan untuk menyelesaikan permasalahan-permasalahan terobosan kuantum. Probabilitas transmitansi yang menunjukkan peluang terobosan partikel kuantum dihitung untuk kasus terobosan langsung pada pita datar, terobosan langsung pada pita berbentuk trapezoidal, dan terobosan Fowler-Nordheim. Untuk memeriksa validasi metode ini, digunakan pendekatan analitikal WentzelKramers-Brillouin (WKB) dan pendekatan numerical metoda Transfer Matrix (TMM) sebagai pembanding. Hasil simulasi menunjukkan kesesuaian yang bagus dengan metode numerikal TMM sedangkan terdapat penyimpangan dengan pendekatan analitikal WKB. Penyebab penyimpangan ini juga dibahas pada penelitian ini secara detil. Kata kunci: Fungsi Airy, Terobosan kuantum, pendekatan WKB, metode transfer matrix, Probabilitas Transmitans

F31 -

Pengaruh Konsentrasi Galium pada Sifat Fisis Nanorod ZnO yang di-co-doping Galium-Boron (Ga-B) yang ditumbuhkan dengan Metode Hidrotermal Iwantono1*, Fera Anggelina1*, Saddiah1, Akrajas A. Umar2, Awitdrus1 1

Jurusan Fisika FMIPA Universitas Riau, Jl. H. S. Soebrantas KM 12,5 Pekanbaru. 2Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia. * [email protected] (Iwantono) dan [email protected] (FeraAnggelina)

Abstrak: Nanorod ZnO yang di co-doping Galium-Boron (Ga-B) telah berhasil ditumbuhkan di atas substrat Flourine Tin Oxide (FTO) dengan menggunakan metode hidrotermal pada suhu 90 o C selama 8 jam. Variasi persentase konsentrasi Ga 1%; 1,5%; 2%; 3% dan konsenrasi B konstan 1% dilakukan guna mengkaji pengaruhnya terhadap sifat fisis, optik, dan morfologi nanorod ZnO. Karakterisasi sampel dilakukan dengan metode FESEM, XRD dan Spektroskopi UV-Vis. Foto FESEM memperlihatkan penampang nanorod ZnO yang terbentuk adalah heksagonal dengan diameter yang bervariasi yaitu berkisar 84-430 nm.Foto cross section FESEM dari sampel menunjukkan bahwa dengan meningkatnya persentase atom galium, maka nanorod ZnO yang tumbuh di atas FTO cenderung condong dan semakin pendek. Pola XRD dari semua sampel memperlihatkan lima puncak difraksi pada sudut 2θ : 31,22°; 34,47°; 36,05°, 47,02° dan 55,08° dengan orientasi bidang kristal hkl (100), (002),


9

Kumpulan Abstrak Kelompok Fisika (F) (101), (102) dan (110). Berdasarkan pola XRD terlihat tidak terjadi pergeseran puncak akibat penambahan persentase pendopingan Ga. Spektrum absorpsi UV-Vis memperlihatkan bahwa serapan tertinggi berada pada rentang panjang gelombang 300-380 nm, sampel Ga 1,5%-B 1% adalah sampel yang memiliki tingkat absorpsi tertinggi dan mampu menyerap cahaya UV lebih banyak dibandingkan dengan sampel lainnya. Sedangkan pada rentang cahaya tampak (400-700 nm), sampel Ga 1%- B 1% cenderung lebih tinggi dibandingkan dengan sampel lainnya. Jika sampel diaplikasikan sebagai material aktif elektroda kerja pada DSSC (Dye Sensitized Solar Cells), sampel Ga 1%-B1% merupakan pilihan yang tepat untuk dikembangkan, karena mampu menyerap cahaya tampak lebih banyak dibandingkan dengan sampel lainnya. Kata kunci: co-doping Ga-B, nanorod ZnO, hidrotermal

F32 -

PEMBUATAN DAN KARAKTERISASI SIFAT MAGNET BaFe12O19 DIDOPING DENGAN MgO-Al2O3 Fitri Permata Sari1), Eko Arief Setiadi2), Ayu Yuswita Sari2) Ramlan1) dan Perdamean Sebayang2) 1)

Depertemen Fisika, FMIPA Universitas Sriwijaya, 2) Pusat Penelitian Fisika, Lembaga Ilmu Pengetahuan Indonesia (LIPI), Komplek PUSPIPTEK, Banten, Tangerang Selatan, Indonesia; Email : [email protected]

Abstract: Microstructures and magnetic properties of MgO-Al2O3 (0.3 0.9; and 1.5 % mole)-doped BaFe12O19 has been investigated. The mixing powders of Barium Hexaferrite have been prepared by mechanical alloying method. Particle sizes of the mixing powder showed that the particle size increases with higher concentration of MgO-Al2O3 additives. The mixing powders were compacted into pellets and sintered with temperatures of 1100 and 1200°C during 2 hours. X-Ray diffraction (XRD) and scanning electron microscopy (SEM) analysis indicated expansion of hexagonal unit cell and non homogeneous particle shapes and sizes. Permagraf testing showed the higher of concentration of MgO-Al2O3 caused decreasing remanent magnetization (2.29 to 1.92 kG) and the saturation decreases (3.44 to 2.93 kG). In other hand their coercive field decreases from 3.83 to 2.52 kOe with higher of sintering temperatures. Keywords: Permanent magnet, BaFe12O19, MgO-Al2O3

F33 -

ASSESSMENT OF THE RIPENESS LEVELS OF PALM OIL-FRESH FRUIT BUNCHES USING LASER SPECKLE IMAGING Gokma Sahat Tua dan Minarni Shiddiq Laboratorium Fotonik, Jurusan Fisika, FMIPA, Universitas Riau. Jl. HR. Soebrantas km 12,5 Pekanbaru 28293; email: [email protected]; [email protected]

Abstract: A laser speckle imaging (LSI) method has been used to asses many kinds of fruit conditions using speckle patterns of the fruit surfaces when illuminated by a laser light. For Palm Oil Industry, a nondestructive, fast, affordable grading method needs to be developed for assessing the qualities of palm Oil-Fresh Fruit Bunches. This preliminary research was aimed to asses the ripeness levels of Palm Oil-Fresh Fruit Bunches (FFB) using a LSI system. The system composed of a 650 nm diode laser and a monochrome CMOS camera. The FFB samples of Tenera variety with 6 fractions of ripeness conditions were obtained from a national palm oil company. The six fractions were f00, f0, f1, f2, f3, f4. The 2nd and 3rd fractions are the best conditions which are ripe1and ripe 2. The conditions were categorized traditionally by an experience staff from the company. The gray values of the FFB speckle patterns, previously recorded by the CMOS camera, were analyzed using ImageJ software. The research results showed that the highest gray values were f4 fraction, followed by the f2, then f3 fractions. The lowest were f00, f0 and f1 fractions which were the unripe FFBs. Keywords: Laser Speckle Imaging, Palm Oil-Fresh Fruit Bunches, Speckle Pattern, Ripeness, CMOS Camera.

F34 -

Karakterisasi Penurunan Viskositas Pelumas dengan Menggunakan Metode Analisis Spectrogram pada Sinyal Suara Mesin Studi kasus Mesin Kompresor Gurum Ahmad Pauzi, Muhammad Rizalul Wahid, Arif Surtono Jurusan Fisika FMIPA Universitas Lampung; [email protected]

Abstract: The research of sound signal frequency for analysis of viscosity lubricant in compressor machine, the relationship of sound frequencies compressor on lubricant value, has been conducted by Spectrogram analysis method. The samples are taken from the lubricants with viscosity value of 7.5058 Ns / m2 up to 8.8790 Ns / m2. The analysis of sound frequencies compressor machine was performed on four areas of compressor machine, consist of compressor lubricants, piston and cylinder, motor, and air tube compressor machine areas. The results from each areas compressor machine was shown in the spectrogram of sound frequency spectrum then they were analyzed for frequency ranges that exist in each recording time. The dominant frequency of the frequency range in spectrogram results can be determined by Fast Fourier Transform (FFT) method. Keywords: Compressor, 10

viscosity lubricant, Fast Fourier Transform, spectrogram.



F35 -

APLIKASI ALGORITMA PARTICLE SWARM OPTIMIZATION UNTUK MENENTUKAN KONSTANTA PADA MINIMAL MODEL TERMODIFIKASI Heriyanto Syafutra, Agus Kartono, dan Hanna Afida Fakultas MIPA, Institut Pertanian Bogor; email: [email protected]

Abstract: The algorithm particle swarm optimization (PSO) was first introduced by Eberhart and Kennedy in 1995. This algorithm mimics the behavior of a swarm interaction of birds or insects when finding the location of a food source. This flock has the intelligence of individual and group that enables them to determine the position of a source of food quickly and precisely. In this study, constants on minimal models modified as position of the food source. Quadratic of errors value between simulation results and experimental data Intravenous Glucose Tolerance Test (IVGTT) is the criteria of the best position of a food source. To determine the extent of linear relationship between simulation results with experimental data was used correlation coefficient (R2), if R2 is great then it can be said the simulation results have been able to approach the experimental data well. Constant of glucose sensitivity (sg) and insulin sensitivity (si) on the model of the metabolism of glucose in the blood (minimal model modified) can be used as a basis for determining whether a person has diabetes or not. The results obtained, particle swarm optimization algorithm can predict the constants on the minimal model modified properly and got the value of R2 above 80% from all five subjects (experimental data), and had been able to predict whether the subject of developing diabetes or not. Keywords: PSO, diabetes, minimal model modified, glucose sensitivity, insulin sensitivity

F36 -

STUDY ANALYSIS OF COAL ASH AREA BASED OF GEOELECTRIC IN CENTRAL TAPANULI Heryanto Romario, Sihite, Intan, Syahyati, Riri Syavira, Rahmatsyah Faculty of Mathematics and Natural Sciences, Medan State University; email : [email protected]

Abstract: Research Study Analysis of Coal Ash Area Based of Geolistrik in Central Tapanuli has been done with the aim to know the value of the subsurface resistivity layer, layering structures, rock types and zones of potential water subsurface. The research method used geoelectric Wenner-Schlumberger configuration, with the path length of 155 meters, the number of electrodes as many 32 pieces and the distance between the electrodes 5 meters. RES2DINV software used to obtain values of resistivity and models of cross-section in two-dimensional (2D). The research results showed the value of the resistivity in the range of 20 Ωm - 100 Ωm, dominated of alluvium and sand. Layering structure in the form are clay, sand, ground water and the soil rock. Keywords: Coal Ash, Resistivity Wenner-Schlumberger

F37 -

DEVELOPMENT OF TEACHING MATERIALS PHYSICS THROUGH ICT USING MOODLE SOFTWARE FOR HIGH SCHOOL CLASS X Hidayati, Masril, dan Gisti Vilara FMIPA Universitas Negeri Padang; Email : [email protected]

Abstract: Learning curriculum implemented in 2013 using a step-by-step scientific approach. The scientific approach is intended to enhance the activity and independence of students in learning. In support of student learning to the curriculum in 2013 required an instructional materials in accordance with the demands of the curriculum. Advances in technology are evolving today can support student learning. The purpose of this study was to produce teaching materials physics-based scientific approach through ICT i s valid, practical and effective. The research conducted is a Research and Development (R & D). As the object of study is physics teaching materials through ICT-based scientific approach. These materials can be accessed on the website scientific-project.com. Based on the analysis of data obtained three results. First, the validity of teaching materials based on this scientific approach is valid with the validity of the average assessed by experts is 82.44 with both criteria. Second, these materials practical for use by an average of 94.88 and currently on the criteria very well. Third, effective teaching materials used by t_account obtained value is greater than t_tabel. This shows that the scientific approach based teaching material is effectively used in physics learning in class X SMA N 1 Padang. Keywords: Scientific approach, Teaching material, ICT

F38 -

PENERAPAN METODE GEOLISTRIK TAHANAN JENIS KONFIGURASI WENNERSCHLUMBERGER PADA PENENTUAN POTENSI AKUIFER DI DAERAH SABAK Husnul Hamdi, Ichy Lucia Resta, dan Nurhidayah Fakultas Sains dan Teknologi, Universitas Jambi; email: [email protected]

Abstract: Research on determination of potential aquifers in the district of Muara Sabak, Tanjung Jabung Timur regency in Jambi province has done. This research was conducted to look for subsurface water potential. SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

11

Kumpulan Abstrak Kelompok Fisika (F) Geoelectric resistivity was the method that used in this research. The configuration of electrode by using Wenner-Schlumberger configuration. Wenner configuration used for lateral profiling and Schlumberger configuration used for vertical sounding. Merging this configuration produces mapping subsurface structure of the detail horizontally and vertically. The processing of data by using RES2DINV. From the results, the depth of investigation of geoelectric resistivity reaches 31.9 m, with a path length measurement of 150 m. Potential aquifer lies at a distance of 30 m from starting point to 65 m with resistivity value ranging between 40-100 Ωm. Keywords: Geolectric, Aquifer, Wenner-Schlumberger

F39 -

PEMODELAN RESPON RESISTIVITAS-DC 2D Ichy Lucya Resta dan Husnul Hamdi Fakultas Sains dan Teknologi, Universitas Jambi; [email protected]

Abstract: Resistivity method is one of geophysical methods used to determine the resistivity distribution at subsurface. Recently, the numerical solution has been developed to model respond of resistivity, for example is finite element method (FEM). This method solve differential equations problem which unknown potentials are calculated by solving the system of linear equations. Respond of subsurface resistivity has been modeled using finite element method for Wenner configuration. The result of this modeling is potential distribution that be used to measure apparent resistivity. Keywords: Resistivity, 2D ,wenner, finite element method

F40 -

ASSESMEN PEMBELAJARAN FISIKA BERBASIS TAXONOMI FOR SCIENCE EDUCATION : PENERAPAN PROBLEM BASED LEARNING MELALUI PENELITIAN TINDAKAN DI KELAS X Irwan Koto dan AsmidaHerawati FKIP Universitas Bengkulu; email: [email protected]

Abstract: Participatory Action Research was adopted in this study to examinestudents‟learningin Physics based on Taxonomy for Science Education proposed by Yager and McCormack. This study involved thirty 10th-grade students, a 10th-grade physics teacher, two physics-pre service teacher, and two senior physics lecturers. Problem based learning was implemented throughout action research cycles and evaluated using three different domains: (1) Concept, (2) Process, and (3) Attitude. We used mixed methoddesign as a means of analyzing data generating from various methods and sources in order to answer the research questions. Our results indicate significant differences in results at every cycle in the concept domain. However, significant improving in term of students‟ learning were found in three domainsthroughout three cycles. Problem based learning provided an impressive teaching approach utilizing the feature of competency based curriculum (Curriculum 2013). Keywords: Problem Based Learning Model, Taxonomy for Science Education.Concep domain, Process domain, Attitude domain.

F41 -

COUPLED OCEAN-ATMOSPHERE MODE IN THE TROPICAL INDO-PACIFIC DURING 2015 Iskhaq Iskandar1,2), Dedi Setiabudidaya1), WIjaya Mardiansyah1) and Muhammad Irfan1) 1

FMIPA, Universitas Sriwijaya, 2Pusat Penelitian Lingkungan Hidup (PPLH), Universitas Sriwijaya; email: [email protected], [email protected], [email protected], [email protected]

Abstract: The tropical Indo-Pacific region is the origin of coupled ocean-atmosphere modes having a worldwide climatic influence. In the tropical Pacific, this coupled ocean-atmosphere mode is called as the El Niño-Southern Oscillation (ENSO), while that in the tropical Indian Ocean is named as the Indian Ocean Dipole (IOD). These two types of coupled ocean-atmosphere mode have significant roles in regulating climate variability in the Indonesian region. During boreal summer to boreal winter 2015, both the El Niño and the positive IOD events took place in their respective tropical ocean. As a result, Indonesia has experienced severe drought in 2015. However, compare to the 1997/98 El Niño – positive IOD event, the 2015 event had weaker influence though the magnitude of the events were almost comparable. Nevertheless, the 2015 El Niño – positive IOD event was claimed as a trigger for forest/peat fire in Sumatra and Kalimantan. Detailed evolution of the 2015 El Niño – positive IOD event will be discussed. Keywords: climate variability, coupled ocean-atmosphere mode, drought season, El Niño-Southern Oscillation, Indian Ocean Dipole

F42 -

Penumbuhan Nanostruktur ZnO yang di-doping Boron (B) MenggunakanMetode Hidrotermal denganVariasi Suhu Annealing dan Efeknya pada Performansi DSSC Iwantono1*, Fera Anggelina1*, Erawati Pajrin1, Akrajas A. Umar2, Awitdrus1

12


Kumpulan Abstrak Kelompok Fisika (F) 1

Jurusan Fisika FMIPA Universitas Riau, Jl. H. S. Soebrantas KM 12,5Pekanbaru. 2Institute of Microengineering and Nanoelectronics (IMEN), UniversitiKebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia; *[email protected] (Iwantono) dan [email protected] (FeraAnggelina)

Abstrak: Penumbuhan nanostruktur ZnO yang di-doping Boron (B) pada substrat Flourine Tin Oxide (FTO) dilakukan dengan metode hidrotermal. Pada penelitian ini juga dianalisa efek suhu annealing terhadap penumbuhan nanostruktur ZnO dan pengaruhnya pada performansi sel surya foto elektrokimia (DSSC). Untuk mengkaji sifat fisik, sampel nanostruktur ZnO dikarakterisasi dengan menggunakan Spektroskopi UV-Vis, FESEM (Field Emission Scanning Microscope), XRD (X-ray Diffraction), dan EDX (Energy Dispersive X-ray). Spektrum UV-Vis memperlihatkan bahwa nanostruktur ZnO tumbuh di atas FTO dengan bentuk heksagonal, terjadinya penyerapan sampel pada rentang panjang gelombang 315-550 nm untuk semua sampel. Foto FESEM menunjukkan bentuk nanostruktur nanorod-nanotube dengan diameter berkisar 50-240 nm untuk semua sampel. Pola XRD sampel memperlihatkan empat puncak difraksi pada sudut 2θ: 31,700º;34,422º; 36,253ºdan 47,539º yang merupakan representasi dari orientasi bidang Kristal, berutur-turut (100), (002), (101), dan (102). Hasil EDX mengkonfirmasikan bahwa sampel didominasi oleh atom Zn dan O; sedangkan atom doping B terlihat berada di dalam sampel, dengan persentase berat masing-masing unsur adalah 71,22 %; 3,72 %; 3,73 % dan 21,33 % berturut-tutut untuk unsur Zn, O C dan B. Sedangkan persentase jumlah atomnya adalah 35,40 %; 11,18 %; 10,10 % dan 43,32 %. Fabrikasi sel surya foto elektro kimia dilakukan dengan menyusun sel berbentuk sandwich dengan susunan nanostruktur ZnO sebagai elektroda kerja, larutan elektrolit, dan nanopartikel platinum yang ditumbuhkan pada FTO sebagai elektro dalaman. Performansi sel diukur di bawah penyinaran lampu halogen 100 mWcm-2. Hasil uji sel memberikan nilai efisiensi terbaik sebesar0.18 % diperoleh dari sel yang menggunakan material aktif nanostruktur ZnO didoping B dengan suhu annealing 250ºC jauh lebih baik dari sel berbasis ZnO murni dengan efisiensi 0,05%. Kata kunci: Nanostruktur ZnO didoping B, Hidrotermal, Suhu Annealing, DSSC

F43 -

KOMPARASI TINGKAT KEASAMAN PADA KOPI ARABIKA, KOPI LUWAK DAN KOPI HASIL IRADIASI BATAN JepriSutanto Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Indonesia; email: [email protected]

Abstract: Coffee is one of the most consumed beverages in the world. In this experiment will determine the level of acidity in Arabica coffee (Toraja), Civet coffee (Gayo), and irradiation coffee from National Nuclear Energy Agency (BATAN). The difference of acidity before and after irradiation is carried out by measuring the cup of coffee at temperature 600C to 250Cusing pH meter PM 6-Dr.A.KUNTZE GmbH. Irradiator technology is used to eradicate the insects, inactivate pathogenic microorganisms, and to eliminate all other bacterial pathogens in coffee.In accordance with the recommendations PERMENKES 701/Menkes/PER/VIII/2009 and CODEC STAN 106-1983, REV.1-2003, 10 kGy doses is conducted to irradiate of coffee. The results of the measurement (4 samples), the acidity of Arabica coffee (Toraja) 5.07, Civet coffee (Gayo) 4.84, irradiation coffee of Arabica (Toraja) 5.21, irradiationcoffee of civet (Gayo) 4.99. From the measurement results showed that irradiation coffee from BATAN, the level of acidity is lower than before irradiation. Keywords: coffee, acidity, pH meter, irradiation

F44 -

SIMULASI PENGARUH PENGAMBILAN AIR TANAH OLEH PENDUDUK TERHADAP KETERSEDIAAN AIR TANAH Juandi Fakultas Matematika dan Ilmu Pengetahuan Alam,Universitas Riau; email: [email protected]

Abstract: Extraction of groundwater that much can cause a decrease in ground water level. The negative impact of a decrease in ground water level were the intrusion of sea water, ground water quality degradation, and land subsidence. Such a condition was necessary to determine the availability of ground water that will be used for various purposes. The purpose of this study was to predict the availability of groundwater in the unconfined aquifer system in the district of Bukit Raya as a function of time. The method used in this research was the finite difference method. The data used were secondary data related to biophysical, socioeconomic community, demographic and other supporting data. The data were obtained from BPS Pekanbaru. The results showed that in the district of Bukit Raya with the population growth rate began in 2017 to 2021 was at 1.44%, the rate of decrease in the depth of the unconfined aquifer was obtained from 2017 to 2021 amounted 0.010275 m/year, with a maximum error of simulation was 0.795%. The availability of groundwater began in 2017 to 2021 experienced a rate increase of 132,861.325 m 3/year. Keywords: Simulation, availability, water, soil.


13


F45 -

Studi Transport Neutron dalam Reaktor Nuklir Jubaidah dan Rini Selly FMIPA Universitas Negeri Medan, Jl. Williem Iskandar Pasar V Medan, 20221; Email: [email protected]

Abstrak: Mengendalikan sebaran distribusi neutron dalam reaktor nuklir berarti mengontrol reaki nuklir dalam teras reaktor. Teori transport neutron digunakan untuk meninjau aliran, tumbukan dan hilangnya neutron dalam teras reaktor. Teori yang kompleks ini disederhanakan menggunakan aproksimasi difusi. Tujuan penelitian ini adalah untuk (1) mempelajari konsep kesetimbangan transport neutron dalam reaktor nuklir, dan (2) mempelajari metode solusi numerik transport neutron dalam reaktor nuklir. Target dari penelitian ini diharapkan mampu memberikan gambaran lebih jelas mengenai kosep kesetimbangan transport neutron beserta desain pemrograman untuk solusi numeriknya.Penelitian dilakukan dengan melakukan studi berbagai literatur terkait dengan transport neutron, teori difusi, serta metode-metode solusi numeriknya. Hasil menunjukkan bahwa teori transport neutron masih sangat sulit untuk dipecahkan. Salah satu pendekatan pemecahan masalah adalah menggunakan pendekatan teori difusi. Metode SOR (successive overlaxation) memperlihatkan karakteristik kekonvergenan yang lebih baik dibanding dengan metoede numerik yang lain.

F46 -

PREPARATION AND CHARACTERIZATION OF POLYMER ELECTROLYTE BASED LiBOB (LiB(C2O4)2) Juni Syah Putry Br Sembiring1), Ramlan1), Etty Marti Wigayati2) 1

FMIPA Universitas Sriwijaya; email : [email protected]. 2Pusat Penelitian Fisika, Lembaga Ilmu Pengetahuan Indonesia, email : [email protected]

Abstract: Electrolyte plays a key role in lithium-ion battery system in terms of ion transport. Safety and reliability factor was the main background of the development of solid polymer electrolyte as a substitute the conventional electrolyte in liquid form. Preparation and characterization of a polymer electrolyte system based on lithium bis(oxalato) borate or LiBOB salt and polymer poly(vinylidene fluoride) or PVdF as the host matrix has been performed. Polymer electrolyte solutions with LiBOB concentration of 30%, 50%, and 70% were prepared by dissolving LiBOB salt and PVdF polymer in N,N-Dimethylacetamide followed by solid polymer electrolyte forming by means of doctor blade and solution cast method. The membranes obtained were characterized by FT-IR, XRD, SEM and EIS. The presence of the salt in the solid polymer electrolyte membrane was showed by SEM studies, while the lithium salt and polymer host interaction by FT-IR and XRD studies. The values of ionik conductivity were obtained by means of impedance test. From the impedance test, it was shown that the electrolyte exhibited higher room ionic conductivity with the increase of salt concentration, with highest conductivity value of 1.22 × 10-6 S.cm-1 at polymer electrolyte with doctor blade technique and 5,28 x 10 -6 S.cm-1 at polymer electrolyte with solution cast technique for 70% LiBOB concentration. Keywords: Polymer electrolyte, LiBOB, doctor blade, solution cast.

F47 -

PEMETAAN KELURUSAN MENGGUNAKAN PENGINDERAAN JAUH DAN KORELASINYA DENGAN DISTRIBUSI MANIFESTASI DI LAPANGAN GEOTHERMAL KEPAHIANG, BENGKULU Ricky Ferdianto Herlambang dan KmsNovranza Program Magister Ilmu Fisika Eksplorasi Geothermal, DepartemenFisika, FMIPA, Universitas Indonesia; email: [email protected]

Abstract: The application of remote sensing technology has currently evolved and covering a wide scope of study, for instance in geothermal exploration. Remote sensing can help identify the geological structures on the surface through observation of lineament features. The geological structures in geothermal exploration are related to permeable zones and can be correlated with the upflow or outflow zone as indicated by the presence of surface manifestations. Landsat-8 imagery is used in delineating the lineament as in advanced, the process was begun by doing pan-sharpeningPrincial Component Enhancement. Extraction of lineaments process was carried out with LINE-module of PCI-Geomatica based on automatic detection algorithms. To reduce lineament features that are not related to the geological structure, such as man-made features, manual observation is conducted by using band combinations. The results showed that the main direction of lineaments within the study area is Northwest-Southeast, consistent to the pattern of major geological structures in Regional Geological Map and related to the existence of manifestations. However, from the observation of Lineament Density Map, there were no direct correlations between areas that have a high density of lineaments with the presence of surface manifestations. Lineament density tends to be dominantly influenced by the geological formation. Keywords: Remote sensing, Landsat-8, Lineament, Geothermal, Surface Manifestations

14



F48 -

SINGULARITAS RUANG-WAKTU BERMETRIK KERR DAN KERR-NEWMAN DALAM TEORI RELATIVITAS UMUM Leni Rumiyanti Jurusan Fisika FMIPA Universitas Lampung; E-mail: [email protected]

Abstract: Spacetime singularity in general theory of relativity has been considered. The definition of singularity was used based on the Kretchmann scalar criteria. The character of spacetime geometry in the region around singularity for the two spacetime metric has been identified according to calculation. The two spacetime metric are Kerr metric and Kerr-Newman metric. The similarity between Kerr metric and Kerr-Newman metric were singularity region, shape of singularity, and its Penrose diagram. While, the different between Kerr metric and Kerr-Newman was at the pseudo-singularity region or event horizon Keyword: Event horizon, Kretchmann scalar, singularity.

F49 -

LONGSOR PANTAI BERDASARKAN DATA MIKROSEISMIK DAN PERCEPATAN GETARAN TANAH MAKSIMUM SEBAGAI PENYEBAB MUNDURNYA GARIS PANTAI DI KAB. BENGKULU UTARA Muhammad Farid 1*, Wiwit Suryanto2 1

FMIPA Universitas Bengkulu, Bengkulu; [email protected]. 2FMIPA Universitas Gadjah Mada, Yogyakarta

Abstract: Shore landslides occurred in North Bengkulu regency is believed to be one cause of shoreline pullback. Vibrations of earthquakes that often occur in Bengkulu Province is suspected to be the cause of the landslide that will accelerate the pullback of shoreline. This study aims to determine the relationship between shore landslides, peak ground acceleration, and shoreline change. Data were collected at several coastal locations that experienced landslide and did not. Microseismic data acquired using short peiode 3 components seismometer as many as 16 points. Other data as supporters is earthquake historical data from 1900 to 2009. Shoreline change data used Landsat image maps of 1994 and 2012. Microseismic data is processed using Geopsy to obtain the spectrum. Historical earthquake data is processed to determine the value of the peak ground acceleration. The validation of microseismic spectrum refers to SESAME rule 2004, and obtained 16 spectra are all valid. Validation is done to obtain a clear peak and obtained 16 spectra. Results of a study showed an association between shore landslides, peak ground acceleration and shoreline change. The relationship between seismic vulnerability index and shoreline changes converting tends to be linear. Keywords: shore landslide, peak ground acceleration, shoreline changes

F50 -

TEKNOLOGI MONITORING GEOLISTRIK TIME-LAPSE UNTUK MEMANTAU DAERAH RAWAN LONGSOR DI KOTA PADANG Mahrizal, Ahmad Fauzi, Akmam FMIPA, Universitas Negeri Padang; [email protected]

Abstract: Lately landslide disasters often hit the city of Padang. In order for this landslide problem can be adequately addressed by the parties concerned it is necessary to comprehensively research and see the picture of the physical properties and structure of the subsurface rocks in areas prone to landslides. This research aim to identify the presence of sliding plane in areas prone to landslides.. Data obtained by using the Wenner and Schlumberger configuration are processed with the help of RES2DINV software. Based on the resistivity values obtained on Track 1 is identified, there are 4 types of rock constituent that is Clay, Sandstone, Limestone, and Andesite. Interpretation of the results showed in Track 1 are sliding plane. Geolistrik Time-Lapse Resistivity Inversion Method done for two sets of data, geoelectric measurements at an early stage and second stage. The magnitude of change in resistivity to both sets of data on average almost the same at all points of measurement which is around 1%, except at certain points which indicate a greater percentage. Keywords: Landslide disasters, sliding plane, Time-Lapse Resistivity Inversion.

F51 -

Equity and Teacher Supportfor Science Students of Senior High School in Jambi Maison Science and Mathematics Education Doctoral Program, Jambi University

Abstract: This paper describes howequity (Eq)and teacher support (TS)for senior high school science students in Jambi. To achieve the goal, the present study used quantitative research design using valid and reliable instrument. The number of items in the instrument were 16, divided into two scales. The instrument was administered in a study to 576 science students who were selected from two favorite schools in Jambi, who


15

Kumpulan Abstrak Kelompok Fisika (F) varied in grade, sex, and ability level. Quantitative data were analysed using Exploratory Factor Analysis (EFA) following with descriptive statistics to show the loading factors, relation between variables, mean, and standard deviation. EFA gives information that the 16-items were distributed into the two scales and no item was loading in other factors. Descriptive statistics showed that the mean scale responses for Eqand TS were 3.22 and 3.78, respectively, indicating that the events being investigating occurred „not sure‟ and more „toward agree‟ for Eq and TS. Keywords: Equity, teacher support, senior high school students.

F52 -

IMPLEMENTATION OF LEARNING MATERIAL BASED ON SCIENTIFIC APPROACH THROUGH ICT IN CLASS X SMAN 10 PADANG Masril, Hidayati, Putri Melati FMIPA Universitas Negeri Padang; Email : [email protected]

Abstract: Low of studentscompetence due to some factor, that is basic knowledge students is low, the teachers are not common to reveal the real problems happened in the students, the learning material used have not based on the scientific approach, and the using of ICT has not been maximal yet. The aim of this research was to find out one solution of the problems above by using learning material based on scientific approach through ICT by applying PBL model which the purpose is to improve copmpetency the students. This research was a Quasy Experiment with factorial design 2 X 2. Samples were taken by using Purposive Sampling. The instruments are observation formats for competence of attitudes, post-test for competence of knowledge, and assessment rubric for competence of skill. Based on the data analysis, it can be concluded that there are significant differences of using learning material based on scientific approach through ICT by applying PBL model towards the students, competence of attitudes, knowledge and skill at the significant degree of 95%. Keywords: Competence, ICT, Learning material, Scientific approach, PBL model.

F53 -

PENGARUH SUHU SINTERING TERHADAP SIFAT MAGNET BERBASIS BaFe12-4xAlxMn3xO19 DENGAN X = 0,8 %mol MELVARIDA PANJAITAN[1], MASNO GINTING[2], RAMLAN[1] [1] [2]

Jurusan Fisika FMIPA Universitas Sriwijaya, Palembang, Sumatera Selatan, Indonesia, Email: [email protected]. Staff Pusat Penelitian Fisika LIPI, Komplek PUSPITEK, Tanggerang Selatan, Indonesia, Email : [email protected]

Abstract: Barium Heksafferit-based permanent magnet doped with Aluminium and Manganese Oxides with a concentration of 0,8 %mol and variations in sintering temperature of 1000 ºC, 1100 ºC and 1200 ºC respectively held for 2 hours has been successfully created. Characterization was conducted on the Particle Size Analyzer (PSA), true density, green body density, bulk density, magnetic flux density, porosity, linear shrinkage, optical microscope, vickers hardness, Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD) and permagraph. From the magnet density and porosity measurement results of BaFe 12-4x AlxMn3xO19found that the density tends increased and the porosity decreased with the temperature sintering is increasing. The optimum condition is achieved at the sintering temperature of 1100 ºC. From the result of SEM is known that the morphology of the sample is relatively homogeneous with the particle shape resembles as a stem/rod. While the result of XRD only found a single phase of Barium Heksafferit with lattice parameters a = 5.8930 Å, b = 5.8930 Å and c = 23,1940 Å. While the hysteresis curve is known that permanent magnet produced is a hard magnetic. Keywords: Barium Heksafferit, Aluminium, Manganese Oxides, X-Ray Diffraction (XRD) and Permagraph.

F54 -

OPTIMASI PROSES PENGEMPAAN PAPAN PARTIKEL AMPAS JARAK KEPYAR DENGAN RESPONSE SURFACE METHODOLOGY Mersi Kurniati, Heryanto Syafutra, Akhiruddin Maddu Fakultas MIPA, Institut Pertanian Bogor; email: [email protected]

Abstract: Compression process conditions is a factor that can affect the quality of the resulting particle board. Compression parameters such as temperature, time and pressure as well as the precise determination of particle size is expected to improve the physical and mechanical properties of the particle board. One commonly used optimization method is a Response Surface Methodology (RSM). Design Expert program with the help of this method was able to determine the optimization of the compression process conditions individually for each response parameter and multi response is the result of the interaction of various parameters such responses. Results of ANOVA analysis with multiple methods of response RSM recommend optimum process conditions 173 C temperature for 8 minutes with pressure 82 kgf / cm2 and a particle size of 63 mesh. In optimum conditions the values obtained parameter response like water absorption (WA) for immersion 24 hours by 79%, thickness swelling (TS) for immersion 24 hours 29%, Modulus of Elasticity (MOE) 2453 kgf / cm2, Modulus of Rupture ( MOR) 32 kgf / cm2 and Internal Bonding (IB) 2.25 kgf / cm2.

16


Kumpulan Abstrak Kelompok Fisika (F) Keywords: Optimization process, Particle board, Response Surface Methodology

F55 -

PENGEMBANGAN PROTOTIPE RUMAH DC UNPAD SEBAGAI SOLUSI PENYEDIAAN LISTRIK PEDESAAN Mohammad Taufik1), Taufik2) 1

FMIPA, Universitas Padjadjaran, Indonesia, email: [email protected]. 2Faculty of Engineering, California Polytechnic State University, USA, email: [email protected]

Abstract: This paper presents the development of a DC house prototype to demonstrate the feasibility of an alternative method for rural electrification. The DC house offers a distributed low-power low-voltage DC residential electricity rather than the legacy centralized relatively high-power high-voltage AC system. As such the DC house method is an individual or family-based approach to rural electrification. This in turn yields to an alternative solution that is scalable, affordable, and flexible. Equally important is that the DC house directly runs DC loads; thus, bypassing losses associated with the traditional AC voltage system. The development of the DC house prototype at Universitas Padjadjaran along with its system components will be presented. The house has been designed to allow a maximum capacity of 600W provided by as many as three renewable energy sources (solar, hydro, and wind). Several DC loads are in place to mimic a small house as typically found in rural areas. Recent status of the prototype including the various projects that are being undertaken to complete the house will be discussed. Plans to enhance the DC house system and for its field testing to further demonstrate its feasibility for adopting the technology will also be summarized. Keywords: DC power, off-grid power, housing, renewable energy, human-powered energy

F56 -

SIMULASI PENGGUNAAN PIEZOELEKTRIK PADA PEMBANGKIT LISTRIK TENAGA BAYU Mohammad Taufik FMIPA, Universitas Padjadjaran, Indonesia, email: [email protected]

Abstract: This paper demonstrates the possibility of harvesting wind energy using piezoelectric material. The energy is being collected by a proposed new topology called the Stacked Buck converter. The new topology is derived from a standard buck topology but allows for sourcing from multiple inputs either independently or simultaneously. The purpose of this topology is to take advantage of several sources of energy harvesting using piezoelectric wind harvesting. The general transfer function for the new topology is derived and simulations for various cases to show proof of concept are presented. Results show the potential that the proposed topology offers for harvesting wind energy using piezoelectric. Keywords: DC system, renewable energy, power electronics

F57 -

APPLICATION OF AN OVERLAY TECHNIQUE TO DETERMINE A POTENTIAL GEOTHERMAL AREA ACEH Muhammad Isa1), Lim Hwee San2) Muhammad Rusdi3) 1

Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala, email: [email protected]. 2School of Physics, Universiti Sains Malaysia, email: [email protected]. 2Fakultas Pertanian, Universitas Syiah Kuala, Banda Aceh, email: [email protected]

Abstract: Indonesia is a country that has a significant volcanic and non-volcanic geothermal potential. It is necessary to intensify study, integrated scientific survey techniques and parameters. The objective of this research was to determine potential geothermal system over Jaboi, Aceh based on the integrated geosciences and remote sensing techniques. The collected geological data; fault and hot springs parameters indicate that presence and distribution pattern. Once classified geophysical data are filtered with boundary condition; magnetic χ<-115 nT and resistivity ρ<50 Ωm. The geochemical data involved Hg concentration and CO 2 measurements. The Hg concentration was between 500 ppb to 3500 ppb and the CO2 concentrations varied from 0.10 % to 5.5%. The Hg and CO2 concentrations increased substantially at higher temperatures. Meanwhile, the satellite temperature distribution is between 20 0C and 30 0C.The filtered of temperature used is T>22 0C. These validated parameters have shown high statistically classification and Kappa accuracy representation model. The Kappa statistic report is showsthatthe geological images (hot spring: 0.85; fault: 0.89). The geophysical images (magnetic: 0.88; resistivity: 0.94); and geochemical images (CO 2: 0.90; Hg: 0.96). Finally, satellite temperature image has Kappa accuracy 0.93.Application of the overlay technique is helpful for determining potential geothermal field. Keywords: geothermal, geosciences, remote sensing, Kappa accuracy


17


F58 -

Perancangan dan Pembangunan Multimedia Pembelajaran Fisika Interaktif Visualisasi Gerak Melingkar Beraturan di Sekolah Menengah Atas (SMA) Muhammad Nasir Program Studi Pendidikan Fisika, Jurusan Pendidikan Matematika dan Ilmu Pengetahuan Alam, Fakultas Keguruan dan ilmu Pendidikan, Universitas riau, [email protected]

Abstrak: Penelitian ini bertujuan untuk merancang dan membangun dan menghasilkan Multimedia Interaktif pembelajaran fisika yang baik topik Gerak Melingkar Beraturan untuk Sekolah Mengah Atas (SMA). Multimedia ini dirancang dengan menerapkan kaedah penelitian Pengembangan (Research and Development, R&D) menggunakan teknik perancangan ADDIE ID Model, Pembangunan dengan menggunakan Macromedia Flash dengan materi fisika Gerak Melingkar Beraturan meliputi aspek perancangan, aspek pedagogik, aspek isi, dan aspek pemrograman. Validasi meliputi expert jugment dan validitas empirik serta realibitas dengan expert pengguna yaitu guru-guru fisika SMA yang senior dan ujicoba terbatas terhadap siswa Sekolah Mengah Atas. Hasil analisis deskriftip menunjukkan bahwa media interaktif adalah valid dengan skor expert jugment 3,8 skala likert atau r = 0,76. Sementara hasil Analisis empirik menunjukkan media interaktif adalah valid dengan r =0,89 dan reliabel dengan alfa cronbach (α = 0,87) Dari hasil analisis penelitian, diperoleh animasi gerak melingkar beraturan sebagai media pembelajaran fisika siswa SMA yang valid dan reliabel. Kata kunci: Perancangan, Pembangunan, Multimedia interaktif,Pembelajaran fisika,Gerak Melingkar Beraturan

F59 -

Hasil Belajar Kognitif Mahasiswa Melalui Penerapan Model Pembelajaran Problem Solving Fisika Pada Mata Kuliah Optik Di Program Studi Pendidikan Fisika UR Muhammad Nor Jurusan PMIPA Fakultas Keguruan dan Ilmu Pendidikan Universitas Riau; m.noer.mt @gmail.com

Abstract: The research aimed to describe the students cognitive learning through the implementation of the learning models problem solving in the optical geometry of reflection and refraction of light. Research subjects are students semester IV physical education in the academic year 2015/2016 totaling 21 students. Data collection instruments of this research is to test cognitive learning. Data collection instruments was conducted at the end learning process by conducting test cognitive learning. Data analyzed using descriptive analysis techniques which include absorption, learning effectiveness, student learning completeness and thoroughness of the learning objectives of reflection and refraction of light. The Result of data analysis showed average absorption of students is 81,86% were in good category, learning effectiveness are in good category, mastery larning students is 80,95% is incomplete and mastery in classical learning objectives is 88,46% were in complete category. Keywords: Cognitive Learning, learning Model Of Problem Solving

F60 -

Karakterisasi Kristal Fotonik Berbasis Opal Menggunakan Angle-resolved Spectroscopy Muldarisnur Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas; email: [email protected]

Abstract: Self-assembly of colloidal particles is a simple and cheap approach for fabrication of three-dimensional photonic crystals. Furthermore, this approach can be used to fabricate opal-based photonic crystals with can be used for a large range of lattice constants. Lattice constant determines the frequency range of the photonic band gap. The advantages of self-assembly are, however, accompanied by difficulty in controlling the fabrication process. As a result, the resulting opals always contain internal defects whose types and amount not fully understood. The most commonly used characterization techniques for opal-based photonic crystals namely scanning electron microscopy and normal-incidence spectroscopy only give limited information about the structure and defects of opals. Better understanding can only be obtained by using angle-resolved spectroscopic techniques. Opal samples were deposited by using the capillary deposition methods. The light transmission through opal films over a broad range of wavelength and angle of incidence was investigated. High quality of the resulting opals is indicated by the observation of many well-defined diffraction peaks. The shifts and the intensity of diffracted peaks can be explained very well by using kinematic and simplified dynamical diffraction theory. Keywords: opals, photonic crystals, angle-resolved spectroscopy, diffraction peaks

F61 -

PENGARUH MODEL PEMBELAJARAN ROLE PLAY TERHADAP HASIL BELAJAR SISWA DI MTsN PAMENANG Nani Elvira Magister Pendidikan IPA, FKIP Universitas Jambi; Email: [email protected]

Abstract: The efficiency of medium and learning model could influence the students‟ ability in solar system topic. The purpose of this study was to determine effect of application of Role Play learning model toward the 18


Kumpulan Abstrak Kelompok Fisika (F) students‟ learning outcome specially in solar system topic. In this research, the applied method was quantitative method which used the comparison and correlation design. The sample of this research was determined by using random sampling technique. The sample was class IX of MTSN Pamenang which consists of 50 students. They were devided into experimental and control classes. The data was analized by using phi coefficient correlation with 5% and 1% coefficient correlation. The result of phi coefficient correlation was of 0,61. It indicated that Role Play model has significant impact toward students‟ learning outcome because 0.61 > 0.284 and 0.368. It can be concluded that the Role Play learning model could increase the students‟ learning outcome on solar system. Keywords: Role Play learning model, Students‟ learning outcome, quantitative method

F62 -

PENGARUH MANAGEMEN PEMBELAJARAN TERHADAP HASIL BELAJAR FISIKA SISWA DI SMPN KOTA BENGKULU Nirwana Pendidikan Fisika FKIP, Universitas Bengkulu; [email protected]

Abstrak: Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar menggunakan managemen POAC terhadap hasil belajar fisika. Jenis penelitian ini adalah penelitian eksperimen. Kelompok eksperimen menggunakan manajemen pembelajaran POAC, sedangkan kelompok kontrol menggunakan manajemen pembelajaran konvensional. Sampel penelitian ini menggunakan teknik random sampling. Instrumen penelitian ini menggunakan tes objektif pilihan ganda dan esai terbatas. Validitas dan reliabilitas instrumen penelitian diuji secara empirik dan dianalisis dengan formula Korelasi Point Biserial.Soal diuji untuk mengetahui tingkat kesukaran dan daya pembeda. Instrumen tes yang valid digunakan untuk mengukur hasil belajar siswa pada pembelajaran managemen POAC dan siswa pada pembelajaran managemen konvensional. Dengan uji hipotesis independen t-tes menunjukkan bahwa harga Sig. (2-tailed) adalah 0,01 dengan convidence interval percentage sebesar 95%. Rata-rata hasil belajar fisika siswa yang menggunakan manajemen pembelajaran POAC lebih tinggi dibandingkan dengan manajemen pembelajaran konvensional. Rata-rata hasil belajar menggunakan managemen POAC adalah 8,6, dan rata-rata hasil belajar fisika menggunakan managemen konvensional adalah 7,2. Berdasarkan uji hipotesis dan rata-rata hasil belajar tersebut, maka dapat disimpulkan bahwa terdapat perbedaan pada hasil belajar menggunakan managemen POAC terhadap hasil belajar fisika. Kata kunci: Managemen Pembelajaran POAC, Hasil Belajar Fisika

F63 -

UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR FISIKA SISWA DENGAN MENGGUNAKAN STRATEGI PEMBELAJARAN AKTIF TIPE TRADING PLACE Novera Yanti S Magister Pendidikan IPA, FKIP Universitas Jambi; Email : [email protected]

Abstract: Physics student learning outcomes on states of matter and expansion at SMP Muhammadiyah I Jambi is still relatively low. It was caused less student activity during learning process. This is evident from less student interest towards physics. The purpose of this study was to determine student activity and physicsstudentlearning outcomes on states of matter and expansion at SMP Muhammadiyah I Jambi. This study is a class action research consisting of three cycles with different subject each cycle. Each cycle consists of four stages: planning, action or implementation, observation and reflection. Active learning strategie that was applied is Trading Placetype. The cognitive learning outcomes was determined from evaluation of each end cycle. The results revealed that applying active learning strategies with trading place type can increase student activity and Physicsstudentlearning outcomes at VIIC grade of SMP Muhammadiyah I Jambi on the states of matter and expansion. Keywords: student activity, learning outcomes, Trading Placetype

F64 -

Sifat Mekanis Nano Komposit TermoplastikHigh Density Poliethylene dengan Filler Nano Partikel Fe3O4 Nurdin Bukit1*), Eva Marlina Ginting1, Hepi Arman Gea1, Erna Frida2 1

Departement of Physics Faculty of Matematics and Natural Sciences State University of Medan. 2University Quality Medan; *Email : [email protected], [email protected], [email protected]

Abstrak: Penelitian ini bertujuan untuk mengetahui sifat mekanis nano komposit High Density Poliethylene (HDPE) dengan bahan pengisi nanopartikel Fe3O4. Nano partikel yang telah dipreparasi dengan metode kopresipitasi dengan politilen glikol (PEG) 6000 diperoleh ukuran 20,63 nmdicampur dengan variasi (2,4,6,8 )% beratpada alat internal mixer laboplastomil volume chamber 60 cc dengan laju 60 rpm selama 10 menit pada suhu 150o C, dengan kompatibilser PE-g-MA 2 % berat sehingga diperoleh nanokomposit.Hasil nano komposit dilakukan karakterisasi sifat mekanis sehingga diperoleh nilai optimum untuk kekuatan tarik pada komposisi 4 % berat, perpanjangan putus 2%, dan modulus Young‟s , 8%. SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

19

Kumpulan Abstrak Kelompok Fisika (F) Kata kunci: nanopartikel Fe3O4 , HDPE, PE-g-MA, sifat mekanis

F65 -

ANALISIS SISTEM KRISTAL DAN UNSUR SERTA MORFOLOGI PERMUKAAN BATUAN BADARMAS DENGAN METODE XRD DAN SEM-EDS Perdinan Sinuhaji, Kerista Sebayang, Syahrul Humaidi, Susilawati, Aditia Warman Depatemen Fisika FMIPA USU Medan, Jl. Bioteknologi no. 1 Kampus USU Medan; email: [email protected]

Abstrak: Telah dilakukan penelitian tentang analisis sistem kristal dan unsur serta morfologi permukaan Batuan Badarmas dengan metode XRD dan SEM-EDS. Batuan Badarmas memiliki sistem kristal : hexagonal dengan parameter kisi : a = 4.8850 Å, b = 4.8850 Å dan c = 5.3713 Å serta  =  = 90o ,  = 120o dengan densitas  = 3. 957 gr/cm3. Batuan Badarmas memiliki unsur : Oksigen (47.56%), Magnesium (6.42%), Aluminium (5.50%), Silika (30.635), Ferum (9.90%) dengan mikrostruktur : persegi tidak beraturan, uniform padat. Kata kunci: Batuan badarmas, Komposisi unsur, Mikrostruktur danSistem kristal.

F66 -

PENGARUH SUHU SINTERING TERHADAP SIFAT FISIS, STRUKTUR KRISTAL DAN SIFAT MAGNET PADA PEMBUATAN MAGNET BaO.6Fe2O3 Pofi Putri Utami[1], Ramlan[1], Muljadi[2] [1]

Jurusan FMIPA Universitas Sriwijaya, Palembang, Sumatra Selatan, Indonesia; [2]Pusat Penelitian Fisika-LIPI, Komplek PUSPIPTEK, Tangerang Selatan, Indonesia; Email: [email protected]

Abstrak: Telah dilakukan sintesa dan karakterisasi magnet barium heksaferit (BaO6Fe 2O3) dari bahan dasar barium karbonat (BaCO3) dan hematit (Fe2O3) menggunakan metode metalurgi serbuk. Komposisi percampuran adalah stokiometri yaitu mole ratio BaO : Fe2O3 = 1:6. Kedua bahan baku dicampur menggunakan magnetic stirrer dan media aquades hingga homogen, kemudian dikeringkan pada suhu 100oC sampai kering. Serbuk yang dihasilkan kemudian ditambahkan 1 % berat binder celuna, kemudian di cetak dengan tekanan 2 ton/cm 2. Pelet yang dihasilkan selanjutnya di sintering dengan variasi suhu sintering yaitu : 1000, 1050, 1100, 1150,1200 dan 1250 oC dan ditahan selama 1 jam untuk tiap suhu tersebut. Hasil analisa XRD dari sampel yang telah disintering dari 1000oC sampai dengan 1250oC menunjukkan pola difraksi yang mirip sama serta teridentifikasi ada dua fasa yaitu fasa BaO6Fe2O3 sebagai fasa dominan dan fasa Fe2O3 sebagai fasa minor. Karakterisasi terhadap sampel yang telah disintering antara lain : uji densitas dan porositas, analisa XRD serta uji sifat magnet menggunakan Permeagraph. Hasil karakterisasi diperoleh bahwa nilai bulk densitas tertinggi dan porostas terendah dicapai pada suhu sintering 1200oC. Berdasarkan kurva histeresis bahwa sifat magnet dari sampel yang telah disintering 1200oC adalah : induksi remanensi = 2,41 kGauss, koersifitas = 3,773 kOe dan Energy produk BHmax = 0,93 MGOe. Keywords: Barium Heksaferit, metalurgi serbuk, sintering, kurva hysresi, hematit

F67 -

ANALISIS PENGARUH PERUBAHAN KENAIKAN SUHU EKSTRIM TERHADAP KINERJA KESTABILAN SENSOR KELEMBABAN DHT22 Rahmat Rasyid M.Si.1, Muharmen Suari M.Si.2, Wendri S.T.2 Jurusan Fisika FMIPA Universitas Andalas,Kampus Limau Manis, Padang. 2Bagian Teknisi Laboratorium Dasar Universitas Andalas, Padang; email: [email protected] 1

Abstract: The performance test of the stability of humidity sensor DHT22 against extreme temperature changes (rapid change) has been conducted. DHT22 humidity sensor is a measuring instrument used to determine the grade of the relative humidity of the water vapor contained in the air and this is a type of the capacitive sensor in which the value of permittivity sensor will be change if the water vapor contained in the air undergo changed. The methods of testing was using dark box size (150x50x30) cm to check the stability of humidity through the characterization before and after calibration of the instrument "Humidity Meter" Lutron HT-3005HA in two different ways: first with no increase in extreme temperatures (room temperature) and second with extreme temperature rise of 0.02 ℃ /𝑠. To determine the correlation humidity to extreme temperatures rise of the sensor DHT22 done in two forms of speed increase in the average temperature of 0.02 ℃ /𝑠 and 0.08 ℃ /𝑠. The results showed stable performance DHT22 sensor is relatively stable to room temperature (~ 25 ° C) with a humidity correction value (0.2 to 0.4)% and a temperature correction of 0.2%, whereas in extreme temperature rise of 0.02 ℃ / 𝑠, the performance of the sensor, the stable down as shown by the humidity correction value increasing from 0.1% to 3.9%. The correlation between humidity with extreme temperature rise shows the nature inversely means that the higher the temperature, the humidity is getting lower with the value of each correlation coefficient R = 0.97 for speedof 0.02 ℃/𝑠 and R = 0.95 for speed of 0, 08 ℃ /𝑠. Keywords: Humidity, temperature, stable, correlation‟s value

20



F68 -

STUDI ANALISIS AIR DAN SEDIMEN DASAR DI AREAL ASH BATUBARA TAPANULI TENGAH Rahmatsyah, Rita Juliani, Nusyirwan Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan; email: [email protected]

Abstrak: Telah dilakukan penelitian studi analisis air berdasarkan parameter fisika, parameter kimia dan sedimen dasar di areal ash batubara dengan tujuan mengetahui kandungan logam yang terdapat areal tempat pembuangan akhir. Pengukuran parameter air permukaan dilakukan 5 lokasi titik stasiun ST 1, ST2, ST3, ST4 dan ST5 ditinjau nilai logam Pb, Fe, Cu, Cr. Pengujian parameter air dengan atomic absorption (AAS) sedangkan sedimen dasar dengan menggunakan X-RD, Scanning electron microscope (SEM) dan EDX. Hasil analisis air berdasarkan parameter fisika menunjukkan kekeruhan tertinggi sebesar 12.35 FNU pada ST 5, konduktivitas tertinggi sebesar 320 μS/cm pada ST1, salinitas tertinggi sebesar 161 ppm pada ST1 dan parameter kimia menunjukkan logam Pb > Fe > Cu > Cr. Hasil analisis EDX menunjukkan didominasi logam Fe , Cu dan XRDterdapatnya logam Pb, Fe,Cu, Cr, Zn. Kata kunci: Ash batubara , Sedimen dasar

F69 -

KARAKTERISASI DAN PEMBUATAN FILM TIPIS BARIUM STRONTIUM TITANAT Ba0,7Sr0,3TiO3 (BST) MENGGUNAKAN METODE SOL-GEL Rahmi Dewi Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Riau Pekanbaru; Email : [email protected]

Abstract: The thin film of Barium Strontium Titanate (BST) has been studied with composition of𝐵𝑎0,7 𝑆𝑟0,3 𝑇𝑖𝑂3 by using sol-gel method that annealed in temperature of 600oC and 650oC. The thin film of BST is characterized by using Field Emission Scanning Electron Microscopy (FESEM) and an impedance spectroscopy. The resultsamples in temperature of 600oC and 650oC are 46 nm and 141 nm in thickness respectively. The result of impedance spectroscopy characterization given frequency values obtained by the impedance value of real and imaginary. The capacitance of the thin film of BST in temperature of 600oC and 650oC are 75.46 F dan 154.69 F. The dielectric constant of the thin film of BST in temperature of 600oC and 650oC are 23.98and148.40 respectively. Keywords: 𝐵𝑎0,7 𝑆𝑟0,3 𝑇𝑖𝑂3 , FESEM, Impedance Spectroscopy

F70 -

ANALISIS PERUBAHAN STRUKTURFASA BESI OKSIDA DARI BIJIH BESI KABUPATEN SOLOK SELATAN AKIBAT TEMPERATUR KALSINASI Ratnawulan, Sukma Hayati AE, dan Hamdi Fisika FMIPA Universitas Negeri Padang; Email: [email protected]

Abstrak: Penelitian ini bertujuan menganalis perubahan fasa besi oksida dari biji besi akibat pengaruh temperatur kalsinasi dari 260 sampai 5000C. Biji besi berasal dari Sungai Kunyit Kecamatan Sangir Balai Janggo Kabupaten Solok Selatan. Alat karakterisasi yang digunakan adalah X -Ray Difraction (XRD) dan X-ray Fluororesence (XRF). Hasil analisis menggunakan XRF menunjukkan bahwa bijih besi daerah sampel mengandung 87.51 % besi oksida. Hasil analisis menggunakan XRD menunjukkan bahwa akibat temperature kalsinasi 260 sampai 5000C terjadi perubahan fasa dari fasa magnetite dengan struktur kubik menjadi fasa maghemite dengan struktur tetragonal dan fasa hematite dengan struktur rhombohedral. Keywords: temperature kalsinasi, biji besi, transformasi fasa, XRD dan XRF

F71 -

ANALISIS KEBUTUHAN PERANCANGAN PERANGKAT PERKULIAHAN FISIKA STATISTIK BERBASIS KKNI DENGAN PENDEKATAN KONSTRUKTIVIS Renol Afrizon, Ahmad Fauzi Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang; email: [email protected]

Abstract: Students of statistical physics is difficult to understand the material because it is abstract. In addition, the demands of higher education curricula oriented to the world of work related KKNI (National Qualifications Framework Indonesia) also needs to be possessed by students. The research objective is to design instructional learning material of statistical physics lectures based KKNI with a constructivist approach. This study uses a model 4-D (Define, Design, Develop and Disseminate) developed by Thiagarajan (1974). This study focuses on the Define phase. Subjects were students who took the course of statistical physics in half from July to December, 2015 amounted to 35 peoples. The research result can be achieved through various analyzes. The analysis illustrates that the front-end statistical physics widely used in solving economic problems. The results of the analysis of students showed that: (1) 57.14% had a good start capability, (2) 76.92% less material master statistical physics, (2) 54.84% need a deepening of the material, (4) 100% environmental influences the ability to SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

21

Kumpulan Abstrak Kelompok Fisika (F) master. The results of the analysis of student tasks: (1) 54.83% had difficulty understanding statistical physics, (2) the tasks assigned are in accordance with competency. The analysis of the material shows that the complexity of statistical physics needs to be improved gradually and structured. The authors concluded that the device needs to be designed based statistical physics lectures KKNI with a constructivist approach Keywords: Learning Materials, Statistical Physics, KKNI, Constructivist Approach.

F72 -

CARBONIZATION PROFILEIN THEELECTRODES CARBON PRODUCTION FROM FLOWER OF ELEPHANT GRASS Erman Taer1), Ria Irma Yani1), Sugianto1), Rika Taslim2) 1

Faculty of Mathemathics and Natural Sciences, University of Riau; Email: [email protected]. 2Departement of Engineering, Islamic State University of Sultan Syarif Kasim

Abstract: Carbonization profile has been determined in the production of carbon electrodes monolith from flowers of elephant grass(FEG). The heating profile was determined by thermogravimetry analysis(TGA) data pre-carbonization ofEFG at a temperature of 2800C. Loss of mass percentage of 41.2% occurs at the optimum temperature of 3370C. Based on a TGA data a carbonization profile can be specified in the production of activated carbon monolith from FEG. The synthesis process of carbon electrode material from FEGwas begun with pre-carbonization process at a temperature of 2800C for 2.5 hours. The next step, the chemical activation was conducted using a NaOHactivating agent with a concentration of 0,1 M. The process of production carbon pellets were performed using a hydraulic press at a pressure of 8 metric tons. Carbonization process was made by a multi-step heating profile and stay for 1 hour at a temperature of 3370C and then continueduntil a final temperature that variesof 5000C, 6000C, and 7000C at a N2 gas environment. Mass, thickness, diameter and density have been analizedfor everystep, such as before and after carbonization. The mass, diameter, thickness and density was decrease in linearly withthe increasing of carbonization temperature. Keywords: Carbonization profile, flower of elephant grass, activated carbon

F73 -

PERUBAHAN GARIS PANTAI PESISIR BARAT PROPINSI BENGKULU PERIODE 1998 – 2011 Rida Samdara dan Ashar Muda Lubis Abstrak: Pada akhir-akhir ini di sepanjang pantai barat Provinsi Bengkulu mengalami abrasi pantai dengan kecepatan sampai 2,5 m/thn. Masalah ini dapat menimbulkan kerugian ekonomi, menggangu sumber daya di wilayah pesisir (seperti agribisnis, rekreasi, pariwisata), merusak sistem transportasi dan kawasan pemukiman terutama para nelayan. Penelitian tentang tingkat kerusakan pantai akibat abrasi telah dilakukan, akan tetapi perubahan garis pantai yang terjadi dan berapa luas daerah yang hilang belum diteliti. Oleh karena itu penelitian ini bertujuan untuk menggambarkan perubahan garis pantai di Bengkulu secara komprehensif. Menentukan perubahan garis pantai diperlukan perhitungan luasan daerah yang hilang akibat abrasi dengan pengamatan data satellite ALOS-PALSAR. Data satellite ALOS-PALSAR diolah dengan menggunakan software SIGMA_SAR Menggabungkan dua data satelit dalam rentang waktu yang berbeda yakni data master dan slave maka kita akan dapat meneliti daerah yang terkena dampak abrasi. Untuk memudahkan pengamatan data master dirubah menjadi warna merah ((R, G, B) = (100 %, 0 %, 0 %)), dan data slave menjadi warna cyan ((R, G, B) = (0 %, 100 %, 100 %)), dengan menggabungkan dua warna ini (melalui proses aditif) yakni pada warna cyan dan pada warna merah, maka dihasilkan peta perubahan intensitas backscatter pada image daerah yang diamati. Pada peta yang dihasilkan, gambar berupa garis perubahan muka pantai dalam periode tertentu. Keywords: Alos Palsar, perubahan garis pantai

F74 -

Estimasi slip rate di Daerah Sesar Sumatra Bagian Selatan Dengan Pengamatan GPS Rio Sahputra1), Ashar Muda Lubis1), Iwan Hermawan2), Emma Hill2), Kerry Sieh2), Feng Lujia2) Rino Salman2) and Nugroho Hananto3) 1)

Department of Physics, Faculty of Mathematics and Sciences, Bengkulu University, Jl. WR Supratman, Kandang Limun, Bengkulu, 38371, Indonesia; email: [email protected]. 2)Earth Observatory of Singapore, Nanyang Technological University, 50 Nanyang Avenue, Block N2-01a-15, Singapore, 639798. 3)Lembaga Ilmu Pengetahuan Indonesia, Puslit Geoteknologi. JL. Sangkuriang, Kompleks LIPI, Bandung 40135, Indonesia

Abstract: Studies focusing on tectonic activity along the Sumatran Fault zone (SFZ), which traverses the entire 1900-km length of Sumatra, are still lacking. The SFZ is segmented, with potentially variable levels of hazard along its length, but the rates are poorly known, particularly at the southern end of the SFZ. The SuMo (Sumatran Fault Monitoring) project is designedthrough installation and monitoring of a dense campaign GPS network to provide a better understanding of segmentation and slip rates along the SFZ. From 2013-2015 we selected and installed 32 GPS monuments over the southern part of the SFZ. The network comprises of 3 crosssections covering the Musi segment, the Manna segment and the Kumering segment where two great earthquakes occurred in 1933 (M 7.5) and 1994 (M 7.0). We have conducted two GPS campaign surveys on this 22


Kumpulan Abstrak Kelompok Fisika (F) southern network (3-4 days of measurement for each occupation site), and established 5 semi-permanent cGPS stations. The campaigns sites are still too premature to be used for estimating slip rate, but in preliminary results for the semi-permanent stations we may see our first measurements of deformation. We estimate slip rate of 1820 mm/yr for three segments. More data from future survey campaigns will help us to estimated revised slip rates for this area of the SFZ. This estimation is important for future hazard assessment, mitigation and planning purposes in the region. Keywords: Sumatran Fault, Fault Segment, Deformation and GPS.

F75 -

Task Orientation and Academic Efficacy of Grade XI Science Students of the First Senior High School in Jambi City Rita Asma Science Education Master Program, Jambi University

Abstract: This paper describes how students‟ task orientation (TO) and academic efficacy (AE)in science learning. To achieve the goal, the present study used quantitative research design using valid and reliable instrument. The number of items in the instrument were 14, divided into two scales. Eight items support TO scale and six items support AE scale. The instrument was administered in a study to 336 grade XI science students of the first senior high school in Jambi, who varied in sex and ability level. Quantitative data were analysed using Exploratory Factor Analysis (EFA) following with descriptive statistics to show the relation between variables, mean, and standard deviation. EFA gives information that the 14-items were distributed into the two scales and no item was loading in other factors. Descriptive statistics showed that the mean scale responses for TO and AE were 4.09 and 3.83, respectively, indicating that the events being investigating occurred „agree‟ and more „toward agree‟ for TO and AE. Keywords: task orientation, academic efficacy, senior high school students.

F76 -

STUDI SIFAT MEKANIK MORTAR BATU GAMPING DAERAH CANGAP KERABANGEN KABUPATEN LANGKAT Rita Juliani, Devi Sunday Hutapea Jurusan Fisika FMIPA, Universitas Negeri Medan, Jl. Williem Iskandar Pasar V Medan - Sumatera Utara, 20221. [email protected]

Abstrak: Cangap Kerabangen merupakan daerah potensi batu gamping yang merupakan bahan baku pembuatan semen. Penelitian ini bertujuan untuk mengetahui sifat mekanik mortar batu gamping. Sampel mortar batu gamping terdiri dari campuran batu gamping, clay, gypsum, silika, dan pasir besi. Sampel dihaluskan lalu dicetak berbentuk kubus dan brequitt, selanjutnya di biarkan sampai 28 hari kemudian, dan terakhir di oven selama 24 jam. Sampel diuji sifat mekaniknya yang meliputi kuat tekan (dengan alat Compression Mechine) dan kuat tarik (dengan menggunakan alat Tensile Machine). Hasil yang diperoleh, mortar batu gamping memiliki kuat tekan sebesar 4,00 kg/cm2sampai7,20 kg/cm2dan kuat tarik sebesar 4,60 kg/cm2sampai 5,82 kg/cm2. Kata kunci: Cangap Kerabangen, Mortar Batu Gamping, Sifat Mekanik

F77 -

Speckle Pattern Analysis of Loosed Palm Oil Fruits Using Laser Speckle Imaging Rofi Wahyu Septrio, Minarni Shiddiq Laboratorium Fotonik, Jurusan Fisika, FMIPA, Universitas Riau; Jl. HR. Soebrantas km 12,5 Pekanbaru 28293; email: [email protected], [email protected]

Abstract: Grading palm Oil-Fresh Fruit Bunches (FFBs) has been an ongoing, interesting research topic lately. Some methods such computer vision and hyperspectral imaging have been suggested and developed for grading the FFBs. In meantime, a laser speckle imaging (LSI) method has also been used to asses many kinds of fruit conditions using speckle patterns of the fruit surfaces when illuminated by a laser light. The purpose of this research was to use LSI method to study the speckle patterns of loosed palm oil-fresh fruits. The system consisted of a 650 nm diode laser as a laser source, and a monochrome CMOS camera as the imaging detector. The research results will be used as the supporting data for a LSI system of FFBs. The samples were 10 year old Tenera Variety of palm oil fruits named Marihat with 6 fractions of conditions. The six fractions were f00, f0, f1, f2, f3, f4 where the 2nd and 3rd fractions are the best conditions which are ripe1and ripe 2. The loosed fruits were taken from the outer layer of FFBs. The conditions were categorized traditionally by an experience staff from the company. The speckle patterns of the loosed palm oil fruits were obtained after illuminated by the laser light and recorded by the camera, and further analyzed by ImageJ software. The gray values for all fractions were compared. Each fraction has 5 fruits, the results were averaged. The research results showed that the highest gray values was the fruits with f0 fraction but the standard deviations of their gray value pattern were the highest also. The gray value intensities or levels were gradually higher as the fraction number increased from f2 to f4. SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

23

Kumpulan Abstrak Kelompok Fisika (F) Keywords: Laser Speckle Imaging, Loosed-Palm Oil Fruits, Speckle Patterns, Ripeness, ImageJ

F78 -

Upaya Meningkatkan Kemampuan Pemecahan Masalah Dengan Penerapan Pendekatan Saintifik Melalui Model Pembelajaran Problem Based Learning (PBL) Pada Pokok Bahasan Suhu Dan Kalor Di Kelas X1 SMAN 1 Kepahiang Alan Turnando, Rosane Medriati Program Studi Pendidikan Fisika FKIP Universitas Bengkulu, Jl. W.R. Supratman Kandang Limun Bengkulu; e-mail: [email protected]

Abstrak: Penelitian ini merupakan penelitian tindakan kelas yang bertujuan untuk meningkatkan kemampuan pemecahan masalah dan aktivitas belajar siswa di kelas X1 SMAN 1 Kepahiang yang berjumlah 31 orang, dilakukan dalam tiga siklus.Instrumen yang digunakan adalah menggunakan tes kemampuan pemecahan masalah dan observasi aktivitas belajar siswa. Data dianalisis dengan menggunakan analisis deskriptif dan menentukan nilai rata-rata tingkat kemampuan siswa dalam memecahkan masalah. Hasil penelitian menunjukkan bahwa terdapat peningkatan aktivitas belajar siswa pada siklus I dengan skor 34 (kriteria baik), siklus II memperoleh skor 41 (kriteria baik), dan siklus III memperoleh skor 42 (kategori baik). Aktivitas belajar siswa meningkat terutamapada saat melakukan tahap menerapkan strategi dan mengevaluasi solusi. Selain itu, terjadi peningkatan kemampuan siswa dalam memecahkan masalah terlihat dari rata-rata persentase kemampuan siswa dalam memecahkan masalah pada siklus I sebesar (76%), pada siklus II sebesar (76%) dan pada siklus III sebesar (89%) terutama dalam mengenali masalah dan merencanakan strategi. Hasil penelitian dapat disimpulkan bahwa pembelajaran dengan menerapkan pendekatan saintifik melalui model Problem Based Learning dapat meningkatkan aktivitas belajar siswa dan kemampuan siswa dalam memecahkan masalah fisika. Kata kunci: Pendekatan Saintifik, Model Problem Based Learning, Kemampuan pemecahkan masalah.

F79 -

STUDI PENGARUH MEDAN MAGNET TERHADAP KOROSI LOGAM BESI DALAM LARUTAN ELEKTROLIT Rudi Haryadi FKIP Universitas Sultan Ageng Tirtayasa; [email protected]

Abstract: Metal is a chemical element that has the properties of strong, tough, hard, conductor of electricity and heat, as well as having a high melting point. One metal that is widely used in everyday human life is iron, as seen from the usefulness of iron is the foundation of modern civilization to date. However, one of the serious problems associated with the use of metal corrosion, due to damage the structure of the material. Therefore, it needs an effort to reduce or slow down the corrosion that occurs, so that the longer usage time. Some corrosion prevention that has been developed among others by means of cathodic protection, coatings, metal and the addition inhibator alliance. In addition, one other way that has been developed to inhibit corrosion is to use electromagnetic fields. Electromagnet is created by using electric current through a coil of wire containing the iron core. The results showed that by using magnetic field, corrosion rate is smaller than without using magnetic field. Keywords: Metal Iron, Corrosion, Electromagnet.

F80 -

PEMBANGKIT CARBON NANO TUBE DENGAN PELEPASAN LISTRIK PLASMA MENGGUNAKAN ELEKTRODA GRAFIT (GENERATION OF CARBON NANOTUBE PRODUCTION BY CARBON ARC DISCHARGE OF GRAPHITE ELECTRODE) Saktioto, Satria Mandala Putra, Rakhmawati Farma Fakultas MIPA Universitas Riau; E-mail : [email protected]

Abstract: One of the Carbon plasma applications at atmospheric pressure is the production of Carbon Nano Tube (CNT) which is readily emerged experimentally. In this paper the initial process to generate Carbon plasma is investigated by using the electrode discharge at various pressures in thermal plasma condition. The Carbon plasma is produced by designing and operating the Direct Current voltage discharge injecting the Butane gas mixture with air compound at certain ratio. By controlling the pumping pressure, the electrical discharge released the ionized gas where the requirement of breakdown voltage is achieved until 3kV. The experimental results show that the breakdown voltage occurred corresponding to current and Carbon species densities with the length of millimetres electrode size. The result will be compared to references and model. The model is underway to meet the parametric function of arc Carbon discharge. This report represents a better value for developing CNT as can be seen at edge of electrodes both negative and positive polar. Keywords: Carbon plasma, butane gas, electrodes discharge, Direct Current voltage

24



F81 -

STUDI AWAL KALIBRASI SENSOR KELEMBABAN TANAH PADA TANAH INSEPTISOL DENGAN PENAMBAHAN PUPUK ANORGANIK Samsidar, Nurhidayah, Andi Putra Sairi, Bayu Hadi Saputro Fakultas Sains dan Teknologi, Universitas Jambi; email: [email protected]

Abstrak: Kalibrasi sensor kelembaban tanah dewasa ini terus dikembangkan mengingat kehadiran faktor kompleks pada tanah ( Suhu, Salinitas dan Bahan anorganik). Pada penelitian ini telah dilakukan kalibrasi sensor kelembaban tanah tipe DHT 11 dengan cara melihat respon hasil pengukuran kelembaban pada tanah inseptisol dengan kelembaban terdefenisi 4%, 8%, 12%, 16% dan 20% akibat penamban pupuk anorganik 0,5%, 1% dan 2%. Hasil analisis kuantitatif menunjkan bahwa pada kelembaban terdefinisi 4% dan 8% bila dilakukan penambahan pupuk anorganik 0,5%,1 % dan 2% memberikan hasil pengukuran kelembaban dengan selisih hasil dari kelembaban terdefenisi sebesar 7,85% - 19,63%, sedangkan pada kelembaban terdefinisi 12%, 16% dan 20% dengan penambahan pupuk anorganik 0,5%, 1% serta 2% memberikan hasil pengukuran kelembaban dengan selisih hasil dari kelembaban terdefinisi sebesar 7,32% - 15,95% dan hasil analisis kualitatif bahwa sensor kelembaban tanah tipe DHT 11 tidak mampu memberikan respon hasil pengukuran yang akurat saat terdapat pupuk anorganik pada tanah. Keywords: Sensor, Kelembaban, Tanah Inseptisol, Anorganik.

F82 -

Surfactant Addition on Preparation of Carbon Electrodes Supercapacitor from Rubber Wood Sawdust Erman Taer1), Septia Dini Yardi1), Zulkarnain1), Rika2) 1

Faculty of Mathematics and Natural Science, University of Riau, email: [email protected]. 4Departement of Industrial Engineering, Islamic State University of sultan syarif Kasim, email: [email protected]

Abstract: The addition of surfactant sodium dodecyl sulfate (SDS) inactivated carbon electrodes (ACE) production from rubber wood sawdust (RWSD) has been analysed. The ACE synthesis was performed by combination of chemical and physicalactivation process, All of sampel was devided into two catagories such as : (i) without and (ii) with surfactant addition. The addition of SDS surfactant in the electrodes provided with a concentration of 1M. The physical properties such as density were obtained from mass, radius, and the thickness of the ACE. The electrochemical properties of ACEs were analyzed by using ciclicvoltammetry (CV) technique at scan rate of 1mV/s. The value of density before-after carbonized and physics activation ACE sample was found to be increased after the surfactantaddition. Density ACEs samples before and after the surfactant addition was 1.0776 g/cm3 and 1.1192 g/cm3 before carbonization, 0.9578 g/cm3 and 1.0481 g/cm3 after carbonization process, 0.8183 g/cm3 and 1.0103 g/cm3 after physics activation process. Specific capacitance (Csp)was105.40 F/g and 75.36 F/g before and after surfactan addition. Physical properties for ACEs are increase with surfactant addition and the electrochemical characteristic decrease with the increasing of thedensity. Keywords: supercapacitor, rubber wood, surfactants

F83 -

ITERASI OPTIMUM PADA MINIMISASI ENERGI BIOMOLEKUL T1 LIPASE DALAM PELARUT METANOL Setyanto Tri Wahyudi, Tony Ibnu Sumaryada, Sidikrubadi Pramudito Departemen Fisika - FMIPA, Institut Pertanian Bogor; email: [email protected]

Abstract: Energy minimization defines the most stable structure. It is static point of view before doing dynamic point of view in molecular dynamic simulation. Energy minimization is a process to find local energy minimum on the potential energy surface from higher energy initial structure to minimum energy. During the process, the structure of molecules changed stepwise, removing steric hindrance and avoiding bad contact. This study aims to obtain optimum iteration for energy minimization through a combination minimization algorithm. The algorithm used in the energy minimization are Steepest Descent (SD) and Conjugate Gradient (CG). The number of iterations of each algorithm is varied by a ratio of 1:1, 1:2 and 1:4 to achieve minimum energy of the simulation system. Simulations using the AMBER force field leaprc.ff12SB with a total of 2000 and 10,000 minimization step. System used in this study was T1 lipase molecules which are immersed in methanol and water. T1 lipase is a thermostable lipase is isolated from Geobacillus zalihae strain from palm oil mill effluent (POME) in Malaysia. The system reaches a minimum after one pico-second with minimum energy -29 800 kcal / mol. Keywords: Molecular Dynamic, Energy Minimization, T1 Lipase

F84 -

Effect of Alumina addition on the Phase Composition of Cordierite Precursors from Rice Husk Silica Simon Sembiring*a, Wasinton Simanjuntakb, Rudi Situmeangb, dan Agus Ryantoa SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

25

Kumpulan Abstrak Kelompok Fisika (F) a

*Department of Physics FMIPA, Lampung University, Jl. Prof. Soemantri Brojonegoro No.1 Bandar Lampung, 35145, Indonesia, bDepartment of Chemistry FMIPA, Lampung University, Prof. Soemantri Brojonegoro, No 1 Bandar Lampung, 35145, Indonesia; *Corresponding author: [email protected]

Abstract: This study describes the phase composition change of cordieriteceramics by mixing Al2O3and cordierite. The mixture was sintered at temperature of 1230 C with different alumina content relative to cordierite. The phases formed and structure changes as a result of alumina addition were investigated using different characterisation technique of X-ray diffraction (XRD) and scanning electron microscopy (SEM).Density, porosity, hardness and electrical resistivity were also measured. Keywords: Cordierite, rice husk, microstructure, structure

F85 -

ANALISA TERMAL BIOKOMPOSIT FILLER SHORT FIBER KENAF PADA POLIMER ABS Siti Nikmatin1, Naresworo Nugroho2, Irmansyah1, jumiarti andi lolo3 1

Departemen Fisika FMIPA IPB ([email protected]), 2Departemen Teknologi Hasil Hutan FAHUTAN IPB, 3Mahasiswa S2 Biofisika FMIPA IPB

Abstrak: Telah dibuat biokomposit dengan matrik ABS yang diperkuat dengan filler serat pendek kenaf. Serat dibuat dengan merendam kulit kenaf usia panen 6 bulan pada kolam statis selama 2 minggu, kemudian dicuci dan dikeringkan hingga kadar air < 10%. Serat kenaf digunakan dalam penguatan polimer ABS dikarenakan, kenaf dapat tumbuh di iklim tropis (4–5 bulan) dengan produktifitas 30 ton/ha dan serat kenaf dapat diproduksi dalam ukuran panjang (5-6 m) dengan kandungan selulosa tinggi serta memiliki sifat mekanik yang unggul[2]. Pembuatan serat pendek kenaf dengan ukuran tertahan 200 mesh dengan metode mechanichal dry milling pada kecepatan 25.000 rpm. Sementara itu matrik ABS yang digunakan adalah ABS torray toyulac impor Malaysia dan ABS recycle dari mitra industri. Karakteristik serat dilakukan dengan uji komposisi kimia TAPPI, analisis termal dengan instrument Diffrensial Scanning Calorymeter (DSC) dan morfologi mikro dengan Scanning Electron Microscope (SEM). Produk biokomposit adalah output dari riset, dimana sintesanya diawali dengan pembuatan granular dengan metode twin screw extruder (TSE) lalu dilanjutkan dengan pencetakan injeksi molding. Komposisi yang digunakan adalah matrik 92%, filler 5% dan coupling agen, aditif serta antioksidan masingmasing 1%.Hasil analisa adalah telah terjadinya ikatan adhesi dan surface tension yang optimal dikarenakan coupling agent yang diberikan mampu berperan sebagai jembatan penghubung dalam perbedaan polaritas antara filler dan matrik serta aditif dapat mencegah terjadinya reaksi oksidasi yang dapat menyebabkan polimer terdegradasi. Penggunaan TSE dalam produksi granular komposit juga mampu mendistribusikan filler ke dalam matrik dengan homogen sehingga komposit dapat mengadsorbsi deformasi exsternal. Hal ini ditunjukkan pada pengujian termal, dan morfologi sem Biokomposit yang lebih baik dibandingkan dengan ABS murni. Biokomposit dengan matrik ABS original memiliki sifat termal yang lebih baik dibandingkan dengan ABS recycle. Kata kunci: Serat, kenaf, filler, ABS, biokomposit.

F86 -

PENGARUH PENAMBAHAN TEPUNG BULU AYAM (TBA) DAN PATI KULIT PISANG TERHADAP SIFAT MEKANIK DAN BIODEGRADABILITAS PLASTIK CAMPURAN POLIPROPILENA BEKAS Sri Mulyadi Dt.Basa, Sri Handani, Pajri Marpin Jurusan Fisika, FMIPA Universitas Andalas, Padang, e-mail: [email protected], Laboratorium Material Program Studi Fisika Universitas Andalas

Abstrak: Telah dilakukan penelitian tentang pengaruh penambahan Tepung Bulu Ayam (TBA) dan pati kulit pisang terhadap sifat mekanik dan biodegradabilitas plastik campuran Polipropilena bekas. Pada penelitian ini dibuat dua macam sampel yaitu pertama sampel dengan variasi Tepung Bulu Ayam (TBA) 0, 2, 4 dan 6 g dengan penambahan pati kulit pisang 10 g dan sampel kedua dengan variasi pati 0, 2, 4 dan 6 g dengan penambahan Tepung Bulu Ayam (TBA) 10 g. Sampel-sampel tersebut kemudian diuji kuat lentur, kuat tarik dan degradabilitasnya. Pengujian degradabilitas dilakukan dengan cara penguburan selama 40 hari. Dari hasil penguburan dilihat pengurangan massanya. Hasil menunjukkan penambahan pati kulit pisang cenderung menurunkan kekuatan mekanis, namun mempercepat proses degradasi. Nilai maksimum kuat lentur terdapat pada sampel dengan variasi Tepung Bulu Ayam (TBA) 4 g dan 6 g senilai 19,60 N/mm2. Nilai kuat tarik maksimum yaitu pada variasi 0 g pati kulit pisang sebesar 1,04 N/mm 2 dan nilai degradasi maksimum didapat pada sampel dengan pati kulit pisang 6 g yaitu 0,146 %/hari. Kata kunci: Polipropilena, Tepung Bulu Ayam (TBA), pati kulit pisang, degradabilitas, kuat lentur dan kuat tarik.

F87 -

ANALISIS MIKROSTRUKTURAL POLA DIFRAKSI SINAR X PADA GRANIT MENGGUNAKAN METODE LINE - PROFILE FITTING DAN RIETVELD Sri Oktamuliani1), Samsidar1), Bayu Hadi Saputro1), Mhd Ficky Afrianto1), Magdalena Ritonga2), Nazri MZ2), Nehru1)

26



Prodi Fisika Fakultas Sains dan Teknologi, Universitas Jambi. 2Jurusan Teknik Kebumian, Fakultas Sains dan Teknologi, Universitas Jambi. email: [email protected]

Abstract: Granite is a rock that contains minerals quartz and feldspar. The x-ray diffraction profile for Granite‟s sample was recorded by PANalytical x-pert3 powder using the Cu kα radiation. The whole diffraction profiles were obtained by varying 2θ from 15o to 70o with a step scan of 0.04o, the time spent for collecting the data per step was 0.5 s. The Line-profile fitting and the Rietveld analysis are used for identify sample. We start with methods for determining crystalline phases in Granite which are identified by the position and intensities of the diffraction peaks. Then we calculated pattern for determining quantitative phase analysis from the noncommercial COD (Crystallography Open Database) are supported by HighScore Plus. Here, we are interested in the microstructural like the crystallite size and the strain. The result show that the size and the strain analysis uses Williamson – Hall technique in the line-profile fitting are about 461Ǻ and 0.08% then the Scherrer technique in Rietveld analysis, the size and the strain are about 406 Ǻ and 0.133%. Both of techniques are based on the analysis of the shapes of the broadened diffraction profiles. We have fitted the individual peak by a Voigt function in the Williamson – hall technique and all the diffraction peaks were fitted simultaneously by a PseudoVoigt function in the Scherrer technique. Keywords: Granite, XRD, Line – Profile Fitting, Rietveld, microstructural

F88 -

Study Potential Landslide Prone Areas (Landslide) Based on the Dominant Frequency (fo) Method HVSR Suhendra1), Refrizon2), Nanang Sugianto3) Fakultas Faculty of Mathematics and Natural Sciences University of Bengkulu; [email protected]

Abstract: Abstract Has conducted research into the potential areaslandslide based on the dominant frequency (fo) by using HVSR (Horizontal to Vertical Spectral Ratio) at 10 measurement points in Bengkulu-Kepahiang traffic lane to detect potential ground movement. This study aims to determine the dominant frequency (fo) in areas landslides that can later be used as mitigation of natural disasters. The process of data collection is done by using a portable seismometer short period PASI Gemini Mod 2 Sn-1405 digitizer laptop. The length of recording time 30 minutes with a sampling frequency of 100 Hz. Data processing is done by analyzing the curve H/V to obtain the dominant frequency. The result of data processing shows that the value of the dominant frequency (fo) in the traffic lane Bengkulu-Kepahiang range 2.042 to 5.554 Keywords: Landslide, the method HVSR, dominant frequency

F89 -

SINTESIS DAN KARAKTERISTIK ARUS-TEGANGAN STRUKTUR KOMPOSIT BOLA KARBON-ZnO Suhufa Alfarisa1), Suriani Abu Bakar2) 1

Program Studi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas PGRI Palembang, email: [email protected]. 2Fakulti Sains dan Matematik, Universiti Pendidikan Sultan Idris, Malaysia; email: [email protected]

Abstract: In this study, carbon spheres (CS)-Zinc Oxide (ZnO) nanocomposite structure was synthesized using the combination of thermal chemical vapor deposition (TCVD) and sol-gel immersion methods. Waste engine oil was utilized as the natural precursor for the production of CS using 2-stage TCVD furnace. Scanning electron microscopy (SEM), energy dispersive X-ray analysis and micro-Raman spectroscopy were used to investigate the structural and properties of the samples. SEM images presented the modified structure of ZnO after being composited with CS. Reduction of the ZnO rods‟ diameter was also observed at several spots. The currentvoltage (I-V) measurement with and without UV illumination of the samples was measured using solar simulator. It was found that under UV illumination, the I-V characteristic of CS-ZnO sample was enhanced. Field electron emission properties of the sample was investigated and found that low turn on field (2.1 V/m at 1.0 A/cm2) with maximum current density of 2.76  10-5 A/cm2 were presented by the sample. These findings open up new and promising applications of CS–ZnO composite in electrical and optoelectronic devices. Keywords: carbon spheres, ZnO, waste engine oil, thermal chemical vapor deposition, sol-gel

F90 -

KAJIAN TEKTONIK WILAYAH SUMATERA BARAT BERDASARKAN ANALISA MODEL MANTEL BAGIAN ATAS DAN DATA SEISMISITAS Syafriani1), Anggina Wulandari1), Furqon Dawam Raharjo2) 1

Jurusan Fisika, FMIPA, Universitas Negeri Padang, email: [email protected]. 2Badan Meteorologi, Klimatologi, dan Geofisika, Padang Panjang, email: [email protected]

Abstrak: Tektonik wilayah Sumatera Barat sangat aktif di mana di bagian barat terdapat zona penujaman lempeng Indo-Australia dan sesar Mentawai sedangkan di bagian daratan merupakan bagian dari Sistem Sesar Sumatera. Keaktifan tektonik ini dapat dilihat dari analisa sebaran seismisitas di setiap sesar atau segmen patahan SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

27

Kumpulan Abstrak Kelompok Fisika (F) mengunakan data gempabumi dari tahun 1990 sampai 2014 dari stasiun regional dan global. Gelombang permukaan dari data gempa ini digunakan untuk memodelkan struktur lapisan mantel bagian atas mengunakan metode “3 stage multi-mode” tomography gelombang permukaan dari Yoshizawa and Kennet (2004). Hasil analisa awal didapatkan ketebalan lempeng Indo-Australia kurang lebih 100 km dengan anomaly perturbasi kecepatan 2%. Di kepulauan Mentawai juga tidak terdapat kemenerusan zona penujaman lempeng IndoAustralia sampai di bawah wilayah daratan Sumatera Barat. Sedangkan dari hasil analisa sebaran seismisitas didapatkan perbedaan tingkat keaktifan segmen yang ada di wilayah Sumatera Barat. Keywords: Tektonik, seismisitas, tomography, Sumatera Barat

F91 -

STUDI SPEKTRA KOPI VARIETAS ARABIKA DAN ROBUSTA MENGGUNAKAN TEKNIK LASER INDUCED BREAKDOWN SPECTROSCOPY (LIBS) Syahrun Nur Abdulmadjid FMIPA, Universitas Syiah Kuala, email: [email protected]

Abstract: Food authentication is an important factor to guarantee the actual origin of a product as well as its quality that satisfy safety and health requirements. Among the food product, coffee is the second largest beverage in the world. There are two varieties coffee that are economically and commercially important: Arabica coffee and Robusta coffee. Both coffee varieties differ in terms of quality features. Arabica beans are considered to have a finer flavor than Robusta. In raw materials form, their differences can be recognized from its physical appearances. However, the differences of both varieties will not be easily identified after roasting and milling. Several analytical spectroscopy methods have been already applied to examine the characteristics of those varieties, such as Raman Spectroscopy, IR Spectroscopy and FT-IR. Nevertheless, there is no analytical measurement using Laser Induced Breakdown Spectroscopy (LIBS). We have examined the characteristics of Arabica and Robusta coffee in terms of their spectra by employing commercial LIBS. We also examined the spectra of blended coffee that commercially available in a market. This research aims to show the capability of LIBS to recognize the specific characteristics of both coffees. Keywords: Autentikasi, kopi arabika dan robusta, spektra kopi, teknik LIBS.

F92 -

RELATIONSHIP BETWEEN STUDENTS’ PERCEPTION OF CLASSROOM LEARNING ENVIRONMENT AND STUDENTS’ BELIEFS ABOUT PHYSICS AND LEARNING PHYSICS Tanti Faculty of Education and Teacher Training Program, IAIN Sulthan Thaha Saifuddin Jambi

Abstract: This study attempts to examine the relationship between students‟ perception of classroom environment and their beliefs‟ about physics and learning physics. Survey data were gathered from 129 students enrolled in physics teacher education program at faculty of education and teacher training program IAIN SulthanThahaSaifuddin Jambi academic year 2014-2015. Data students‟ perception of classroom learning environment were collected using What is Happening in This Class (WIHIC) questionnaire, while data students‟ beliefs about physics and learning physics were collected using the Colorado Learning Attitudes About Science Survey (CLASS). Both of questionnaires have been modified using analysis factor. The findings indicated that majority of students perceived their classroom as having task orientation and students cohesiveness. The findings also revealed significance relationship between students‟ perception of classroom learning environment and their beliefs about physics and learning physics. Keywords: classroom learning environment, students‟ beliefs, analysis factor.

F93 -

Pengembangan Perangkat Pembelajaran berbasis Riset dengan Strategi POE untuk Meningkatkan Kompetensi Fisika Peserta Didik Usmeldi Fakultas Teknik, Universitas Negeri Padang, Jln. Hamka, Air Tawar, Padang; E-mail: [email protected]

Abstrak: Pembelajaran fisika di Sekolah Menengah Atas Negeri (SMAN) 1 Bukittinggi dilaksanakan melalui kegiatan teori dan praktikum yang bersifat verifikasi. Masih banyak (58%) peserta didik yang belum tuntas belajar fisika. Metode yang digunakan guru dalam proses pembelajaran bersifat teacher centered,peserta didik belum dilibatkan secara aktif dalam menemukan fakta, konsep, dan prinsip fisika, kegiatan praktikum jarang dilakukan, dan bahan ajar yang digunakan masih berupa buku paket dan modul. Untuk mengatasi masalah ini dikembangkan perangkat pembelajaran berbasis riset dengan strategi POE(Predict-Observe-Explain). Penelitian bertujuan untuk menghasilkan perangkat pembelajaran fisika berbasis riset dengan strategi POE yang valid, praktis, dan efektif. Penelitian dan pengembangan ini menggunakan model 4D dari Thiagarajan. Instrumen penelitian adalah panduan wawancara, lembar observasi, lembar validasi perangkat pembelajaran, angket respon guru dan peserta didik, tes hasil belajar, lembar penilaian keterampilan, dan angket sikap. Hasil penelitian

28


Kumpulan Abstrak Kelompok Fisika (F) menunjukkan bahwa perangkat pembelajaran yang dikembangkan sudah termasuk kategori valid berdasarkan penilaian ahli. Perangkat pembelajaran termasuk kategori praktis berdasarkan hasil observasi, angket respon guru dan peserta didik. Penerapan pembelajaran fisika berbasis risetdengan strategi POE efektif meningkatkan kompetensi fisika peserta didik. Disarankan kepada guru fisika agar menerapkan pembelajaran berbasis risetdengan strategi POE. Kata kunci: pembelajaran berbasis riset, predict-observe-explain.

F94 -

ANALISA KEBERADAAN LOGAM BESI DAN SENG PADA PERMUKAAN MEDIA PENYERAP KARBON AKTIF Erman Taer, Widya Sinta Mustika, Sugianto, Rika Taslim Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Riau; email: [email protected]

Abstract: The contamination of heavy metal such as iron and zinc in the water can be analised by adsorption of activated carbon from empty fruit branch of oil palm (EFB). it was made by chemical activation used KOH 0.3 M, and carbonization at temperatures of 800 oC. Adsorption was done for 3 and 5 hours of immersing time for zinc and iron, respectively. Existence of metals was proved by analysis of surface and structure of EFB based activated carbon by using scanning electron microscopy (SEM), energy dispersif X-Ray (EDX), and X-ray difraction (XRD). SEM micrograph indicates metals by appearence of small particles. The differences of them are particles form and brightness. EDX spectra indicate the presence of carbon (C) 79.79%, the maximum contamination of Fe 2.36% and 0.61% Zn. While the spreading pattern of heavy metals onto surface of activated carbon is described by mapping technique. XRD datas showed that the carbon peak appeared at 2θ 24.830 (002) and 44.534 (100). Fe appeared at 2θ 32.824 (020), 44.648 (021), 64.896 (131), and 82.294 (212). Zn appeared at 2θ 29.379 (-312) and 44.658 (-115). used all of the technique has been succes to show the existence of heavy metals ion. Keywords: activated carbon, empty fuit branch of palm oil, heavy metals, iron, zinc,

F95 -

EXCAVATION OF CHARACTER VALUES AT PHYSICS CONTENTS OF HIGH SCHOOL AT CLASS XI Yenni Darvina, Masril, Murtiani FMIPA Universitas Negeri Padang; Email: [email protected]

Abstract: Religious attitudes and social attitudes of learners as stated in the core competency 1 and 2 on the Curriculum 2013 not only be formed through habituation drilled in the classroom during the learning process only. But must also be instilled through the excavation of character values of a given subject matter. One of these subjects is a high school physics in this case focused on a class XI. In order for the excavation of character values of the material to be taught high school physics more optimal, it is necessary physics textbook that contains the values of the character. To produce a good textbook research is conducted Development (R and D) model 4-D (four D model) with the definition phase (define), design (design), development (development), and dissemination (dessiminate). After the excavation of character values of the material High School Physics Semester 1 and 2 obtained by the various character values that can be applied in everyday life. The result showed the validity of an average of 90.64 in the category of very valid, the practicalities of an average value of 86.3 with very good categories and the effectiveness of 73.58% with a strong influence on the category of learning outcomes. Dissemination of the results obtained by the response of teachers to textbooks produced was 87.175 in the category very well. The advantages of this book other than the textbook Physics is already integrating character values that need to be drilled during the learning process in accordance with KI and KD and equipped with character values of the physics of matter that can be applied in life. Keywords: The values of character, textbooks, materials physics.

F96 -

THE CO2 ACTIVATION EFFECT OF CARBON ELECTRODA FROM FLOWER OF ELEPHANT GRASS Erman Taer1), Yesi Puspita Sari1), Iwantono1), Rika Taslim2) 1

Faculty of Mathemathics and Natural Sciences, University of Riau, Email : [email protected]. 4departement of Industrial Engineering, Islamic State University of Sultan Syarif Kasim, Email : [email protected]

Abstract: The effect of CO2 activation temperature have been analyzed on the physical and electrochemical characteristicof carbon electrode supercapacitor from flower of elephant grass. The CO2 activation temperature with variation of 800⁰C, 850⁰C and 900⁰C was chosen. The analyzing of physical properties include density, thickness, diameter and mass.The calculation of the density can be done by reviewing the variable thickness, diameter and mass. Thedensity was found that decrease with the increasing of activation temperature.While the electrochemical properties was calculated by production of a supercapacitor cell with a coin cell type. The SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

29

Kumpulan Abstrak Kelompok Fisika (F) electrochemical measurements were performed using a Cyclic Voltammetry (CV) method at a potential window of 0-500 mV with a scan rate of 1mV/s. The CV measurementswere performed in a 1 M H2SO4electrolites. It was found that the Specific Capacitance (Csp)wasincreased with the increasing of activation temperatur. TheCsp for varies activation temperatureof 800⁰C, 850⁰C and 900⁰C were 80,84 F/g, 86,92 F/g and 92,81 F/g, respectively. Keywords: Activation temperature, Supercapacitor, Capacitance specific, Flower of elpehant grass, Density

F97 -

CARBONIZATION TEMPERATURE DIFFERENCES OF SYNTHESIS CARBON PAPER FROM BANANA PEEL WASTE Erman Taer1), Zahratul Aini1), Iwantono1), Rika Taslim2) 1

Faculty of Mathemathics and Natural Sciences, University of Riau, Email: [email protected]. 2Departement of Industrial Engineering, Islamic State University of Sultan Syarif Kasim, Email : [email protected]

Abstract: The synthesis of carbon paper electrode (CPE)from banana peelwaste has been made in laboratory scale. The production of CPE was begun by made of banana peel pulp. It‟s was poured into molds with size of 12x10 cm, and then dried in an oven at a temperature of 150℃ for 3 hours to obtain a sheet ofgreen carbon paper (GCP). Sample of GCPwas cut into a smaller size of 3x2 cm and then was activated by chemical technique using a solution of KOH with concentrationof 0.2 M. All sample GCP was carbonized to found a carbon paper (CP) using a furnace with N2gas atmosphere by temperature variation of 500℃, 600 ℃, 700℃ and 800 ℃.. The physical activation process was done by using CO2 gas for 2 hours. Density was measured, and it was found the optimum at temperature of 500 ℃ and the other side was minimum at a temperature of 800 ℃. Each temperature range has a density of 0.653 g/cm3, 0.633 g/cm3, 0.621 g/cm3 and 0.620 g/cm3. The results showed that the carbonization temperature has a significant effect on the magnitude of the density of CP. Keywords: Carbonization temperature, Carbon paper, Banana peel waste

F98 -

Pengembangan Perangkat Pembelajaran IPA Fisika SMP Berorientasi Strategi Metakognitif Berbasis Kurikulum 2013 Zulhelmi Program Studi Pendidikan Fisika FKIP Universitas Riau, Pekanbaru; [email protected]

Abstract: Every teacher in the education unit is obliged to prepare the complete and systematic learning tools that takes place in an interactive learning, inspiring, fun, challenging, motivating learners to participate actively and provide enough space for innovation, creativity, and independence in accordance with their talents, interests, and physical and psychological development of learners. The purpose of this research is to develop the learning tools of physic in class VIII of junior high school that oriented by Metacognitive Strategies those are valid, practical and effective. This type of research is the Development Research by step development of learning tools using the 4D model (Four D Model), consists of four phases, namely definition, the design, development, and dissemination. To test was carried out In eighth grade students of MTs Hayatul Islamiyah Pangean Kuantan Singingi Regency Riau. The Learning tools are developed in this study consists of lesson plans, worksheets, Test results. The results of this study gained an average of validity of the science teaching junior high school physics class VIII 90.25 that oriented by metacognitive strategies on valid category, an average of practicalities 75.83 on practical category and the average effectiveness of the learning device 76.05 on effective category. It can be concluded that the learning tools of physics in class VIII those are developed can be used in science teaching of class VIII in junior high school. Keywords: Learning tools of Physics in Junior High school, Meta cognitive strategy, valid, practical, effective

F99 -

FISIKA DAN NILAI KEISLAMAN DALAM BAHAN AJAR BERMUATAN KECERDASAN KOMPREHENSIF Zulhendri Kamus Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang; email: [email protected]

Abstract: Modernization began to occur since fall down of Usmani Turky dynasty and created the dichotomy between science and Islam. The development and progress of science is free-values or neutral after that. Furthermore, Islam is not used as reference of science correctness. Physics that studies the natural phenomena through research does not have Islamic values, whereas Islam has been state about all nature phenomena that occur through Qur'an and hadith. This fact shows that Islam and science have conformity. Islamic theologian have concept of Islamization of science about thirty years ago. But this concept is still not creating a good results and dichotomy of Islam and science is still going on. Alternative solution to revive Islam as reference of science should be to find through research. This research and development has been developing Islamic values in Physics throughlearning materials with comprehensive intelligencecontents. The product of this research has a validity value 88.53 or very valid category. The other results of research, Islamic values developed in the physics

30


Kumpulan Abstrak Kelompok Fisika (F) topicsare able to improve both the attitude of the religious (Islamic values) and intellectual competencies of students after the implementation of a product of research in learning. Keywords: Physics, Islamic values, Learning material, Comprehensive intelligence.

F100 - KAJIAN HUBUNGAN KONDUKTIVITAS LISTRIK DENGAN KONSENTRASI PADATAN TERLARUT PADA AIR PERMUKAAN Afdal, Fadhilah Irwan, Indah Arlindia Jurusan Fisika, FMIPA, Universitas Andalas, email: [email protected]

Abstract: A study to determine relationship between the electrical conductivity and total dissolved solid (TDS) in three types of surface water (sea, river and lake water) has been conducted. Sea water samples were taken on Padang beach, river water samples were taken on Batang Arau river and lake water samples on Diatas lake of Alahan Panjang. At each location, water samples were taken at six points at every 500 m distance. Sea water samples were taken at three points near the tourist attractions and at three points near the seaside. River water samples were taken at two points at upstream, midstream and downstream of the river respectively. Lake water samples were taken from the lake sides towards the middle of the lake. TDS value was determined by using gravimetry method and electrical conductivity values measured by conductivity meter. The average value of TDS of sea water is 23886.7 mg/l, the river water is 1873.3 mg/l and the lake water is 546.7 mg/l. The average value of the electrical conductivity of sea water is 177.9 μS/cm, the river water is 139.1 μS/cm and the lake water is 80.6 μS/cm. TDS relationship with the electrical conductivity of the sea water can not be determined because of TDS values are oscillated with electrical conductivity. TDS relationship with the electrical conductivity is linear at small electrical conductivity value and it is not linear at high electrical conductivity value for the water samples of the river and the lake. The best model for the relationship between TDS and the electrical conductivity of the river and lake water are the second degree polynomial models with correlation coefficient of 0.9506 and 0.9896 respectively. Keywords: electrical conductivity, gravimetry, temperature, Total Dissolved Solid (TDS)

F101 - Penentuan Nilai Resistansi Film Tebal PANi-Selulosa sebagai Sensor RH. Afdhal Muttaqin, Rully Mandel Jurusan Fisika Universitas Andalas

Abstrak: Telah dilakukan sintesis pembuatan material sensor kelembaban relatif (RH) berbasis selulosa ubi gajah yang di cangkokkan dengan polianilin (PANi). Pembuatan PANi-selulosa menggunakan metode grafting dengan variasi selulosa 1-5 gram selulosa pada 10 ml PANi. Inisiator CuSO 4 (1 M) digunakan untuk membentuk radikal bebas, sehingga molekul selulosa bisa masuk pada tulang punggung PANi. PANi-selulosa hasil sintesis dikarakterisasi mengunakan FTIR, Spektrofotometer UV-Visibel. Pengukuran resistansi dari film tebal PANiselulosa dilakukan untuk setiap variasi penambahan selulosa berdasarkan perubahan kelembaban relatif. Hasil karakterisasi FTIR menunjukkan terjadinya pergeseran spektra dan serapan optik PANi oleh pencangkokkan selulosa yang mengindikasikan keberhasilan pencangkokan PANi-selulosa. Untuk setiap variasi massa PANiselulosa terlihat pengaruh penambahan selulosa yang menurunkan nilai resistansi film PANi-selulosa. Hasil terbaik sebagai Material sensor RH diperoleh dari pencangkokkan 10 ml PANi pada 3 gram selulosa dengan korelasi linear sebesar 0,9640. Secara keseluruhan, film PANi-selulosa memiliki pola resistansi yang berkesesuain dengan tingkat kelembaban relatif, semakin tinggi nilai kelembaban relatif semakin rendah resistansi PANiselulosa. Kata kunci: grafting PANi-selulosa, kelembaban relatif, hidrolisis, Film tebal PANi-selulosa, Sensor RH PANiselulosa

F102 - PENGARUH SERAT PINANG (Areca catechu L. Fiber) TERHADAP SIFAT MEKANIK DAN SIFAT FISIK BAHAN SEMEN-GIPSUM Alimin Mahyudin, Suci Olanda Fisika FMIPA Universitas Andalas Padang

Abstrak: Telah dilakukan penelitian dan pengujian papan semen-gipsum dengan penambahan serat pinang (Areca catechu L. Fiber) terhadap sifat mekanik dan fisik. Metode penyusunan serat yang digunakan yaitu 1 lapis secara teratur yang diletakkan diantara matriks, dengan variasi persentase serat yang digunakan adalah 0%, 0,2%, 0,4%, 0,6%,08% dan 1,2% terhadap massa adonan serat, semen, gipsum dan air. Dari hasil pengujian didapatkan nilai optimum kuat tekan diperoleh pada papan dengan persentase serat 0,6% yaitu sebesar 108,08 kg/cm2, sedangkan nilai kuat lentur optimum diperoleh pada papan dengan persentase serat 0,6% yaitu sebesar 30,33 kg/cm2. Daya serap air optimum diperoleh persentase serat 1,2% yakni sebesar 16,52%, sedangkan densitas optimum diperoleh pada persentase serat 0,8% yaitu sebesar 1,139 gr/cm 3. Nilai kuat tekan dan densitas


31

Kumpulan Abstrak Kelompok Fisika (F) memenuhi standar JIS A 5908-2003 dan SNI 03-6384-2000, sedangkan nilai kuat lentur memenuhi standar bison gypsum fibre board dan daya serap air memenuhi standar FAO. Kata kunci: papan semen-gipsum, serat pinang, kuat tekan, kuat lentur, daya serap air, densitas

F103 - EFFECTS OF DIFFERENT LASER WAVELENGTH ON FLUORESCENCE INTENSITY OF LOOSED PALM OIL FRUITS Annesa Auliya dan Minarni Shiddiq Laboratorium Fotonik, Jurusan Fisika, FMIPA, Universitas Riau, Jl. HR. Soebrantas km 12,5 Pekanbaru 28293, email: [email protected]

Abstract: Fluorescence Imaging has been developed as a nondestructive method for assessing fruit and vegetable qualities and attributes. There are many attributes can be accessed using a laser based fluorescence imaging such as chlorophyll content and other pigments responsible for fruit colors and ripeness. The assessment of these attributed depends on the wavelength of excitation lasers used. This research was aimed to study the effects of two different wavelengths of diode lasers applied to a fluorescence imaging system of loosed palm oil fresh fruits. The system consisted of two diode lasers each with 405nm and 650 nm wavelength respectively and a CMOS camera with some color filters. The filters used were a blue filter for 405 nm diode laser and an orange filter for 650 nm laser. The samples were loosed palm oil fresh fruits from Tenera variety named Marihat and taken from the outer layer of palm oil fresh fruit bunches. The samples had four levels of ripeness, under ripe 1 (F00), under ripe (f0), ripe (f3), and over ripe (f4), each had 5 loosed fruits. The recorded fruit images were analyzed using ImageJ software. The gray values which represented as fluorescence intensities for four ripeness categories and wavelengths were compared. The results showed that both wavelengths resulted different fluorescence intensities for the three ripeness levels. The red diode laser with 650 nm resulted higher gray values by 38,97% - 78,75% compared to those of violet laser with 405 nm wavelength. These result agreed with the fact that fluorescence of pigment moleculer in fruit tissue, higher when excited by for red laser. Keywords: Laser-based Fluorescence Imaging, Loosed-Palm Oil Fruits, Ripeness, Wavelength Dependence, ImageJ

F104 - Doping MnO dan Al2O3 Pada Magnet Permanen Berbasis BaFe12O19 dengan Metalurgi Serbuk dan karakterisasinya Antoni[1], Ramlan[1], Eko Arief Setiadi[2] dan Perdamean Sebayang[2] [1]

Jurusan Fisika FMIPA Universitas Sriwijaya, Palembang, Sumatera Selatan, Indonesia, Indonesia. [2] Pusat Penelitian FisikaLIPI. Kompleks PUSPITEK, Serpong, Tanggerang Selatan, Indonesia

Abstrak: Pembuatan magnet permanen berbasis Barium Heksaferrit (BaFe12O19) dengan doping Mangan Oksida (MnO) dan Alumunium Oksida (Al2O3) telah berhasil dilakukan sebagai material soft magnetik. Bahan magnetik BaFe12-4xAlxMn3xO19 dengan variasi x = 0.4; 0.8; dan 1.4 %mol, dilakukan dengan metalurgi serbuk, melalui tahapan: milling, kompaksi dan sintering. Proses milling dilakukan dengan menggunakan, ball mill selama 24 jam, tekanan kompaksi 35kgf/cm2 dan sintering pada 1100oC (2 jam). Karakterisasi yang dilakukan adalah: sifat fisis (bulk density dan porosity), analisa mikrostruktur (SEM-EDX dan XRD), dan sifat magnetik menggunakan Permagraph. Sifat fisis bahan magnetik BaFe12-4xAlxMn3xO19 menghasilkan nilai bulk density yang optimum pada jumlah doping MnO dan Al2O3 sebesar 8% mol. Hasil analisa mikrostruktur menunjukkan bahwa pada suhu 1100oC (2 jam) terbentuk fasa tunggal Barium Heksaferrit dengan struktur kristal heksagonal dan parameter kisi, a = b = 5.892Å, c = 23,099 Å. Morfologi bahan magnetik BaFe12-4xAlxMn3xO19 dengan ukuran partikel terdistribusi relatif merata dengan kandungan Ba = 5.78, Fe = 26.16, O = 63.51, Mn = 0.08, dan Al = 4.47% (atomik). Sifat magnet untuk magnet BaFe12-4xAlxMn3xO19 menunjukkan nilai koersivitas dan remanensi cenderung menurun akibat konsentrasi penambahan doping MnO dan Al2O3. Kondisi optimum dicapai pada suhu sintering 1100 °C (2 jam) dengan kosentrasi x = 0,8 mol pada bahan magnetk BaFe12-4xAlxMn3xO19, menghasilkan bulk density 3,98 g/cm3, porosity = 25,07%, koercivity, Hc = 3,63 kOe dan remanensi, Br = 2,09 kG Kata kunci: Magnet permanen , Barium Heksaferrit, Sintering, Densitas,Koersivitas, Remanensi.

F105 - THE EFFECT QUANTUM LEARNING MODEL BY USING MULTIMEDIA ON PHYSICS STUDENTS ACHIEVEMENT Ari Frianto Fakultas Pascasarjana Pendidikan IPA, Universitas Jambi, email: [email protected]

Abstract: The research aims to describle the effect of Quantum Learning model by using multimedia on physics students achievement the class X Senior High School Students in PGRI 2 Jambi city. This study was a quasiexperimental research whose population was all the class X Senior High School Students PGRI 2 of Jambi city that consisted of four classes. The sample was established using the stratified proportional random sampling technique. The instruments used was a test of students achievement (multiple choice items), and teaching 32


Kumpulan Abstrak Kelompok Fisika (F) implementation observation sheets. To test the effect of the data were analyzed using the regression test, while to investigate which learning model was better on each dependent variable, the data were analyzed using independent sample T-test. The results of this research show that, 1) there are effect of Quantum Learning model by using multimedia on physics students achievement the class X Senior High School Students in PGRI 2 Jambi city. 2) the Quantum Learning model by using multimedia is better than the conventional learning. Keywords: Quantum learning, multimedia, students achievement.

F106 - SINTESIS KARBON AKTIF DARI KULIT DURIAN SEBAGAI ABSORBSI ION Fe PADA AIR GAMBUT Astuti, Suci Miza Marta Ulfia Laboratorium Fisika Material, Jurusan Fisika FMIPA Universitas Andalas, Padang, Kampus Unand Limau Manis, Pauh Padang 25163, e-mail: [email protected]

Abstract: The syntesis active carbon from kingfruit shell used kalium hydroxyde (KOH) as activator has been done. The research determined effect of KOH consentration to morphology, pore size and performance of activated carbon to absorbs of ferrum in peat water. Morphology and pore size were examined by using SEM. Characterization show that increasing of KOH consentration caused an increase in the pore size are 8,41 μm in KOH consentration 35%. Atomic Absorbsion Spectrophotometry (AAS) results shows that in decreasing ferrum consentration caused by increasing pore size. KOH 35% give lowest in content ferrum is 0.36 mg/L and almost approaching the threshold water is 0.3 mg/L. Electrical conductivity is 0.072 mS/cm in KOH consentration 35% and still above the threshold conductivity of water for consumed is 0.055 mS/cm. Keywords: activated carbon, kalium hydroxyde (KOH), adsorbtion of ferrum

F107 - Deteksi Abnormalitas Citra Paru dengan Segmentasi Region of Interest Menggunakan Matlab 2013a Atina Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas PGRI Palembang, email: [email protected]

Abstract: Pulmonary radiographic image has a gray level results were very close and therefore caused an error in interpreting it. To help the medical team to interpret and detect abnormalities in the pulmonary radiographic image required an appropriate algorithm. In this study, an algorithm were prepared using Matlab 2013a to segment the pulmonary radiographic image with Region of Interest (ROI). Detection of abnormalities based on the intensity / gray level image. 100 pulmonary radiographic images used as sample data that have been accompanied by the results of the doctor‟s diagnosis, it was divided into two parts namely normal images (50 images) and test images (50 images). Normal images used as the image database (reference). The intensity of gray reference image used as a basis for determining abnormality test images. The results of the doctor's diagnosis is used to measure the accuracy of the system. The results showed 50 test images, there are 33 images in accordance with the doctor's diagnosis, while 17 among not appropriate. So that, the accuracy of the system can be calculated at 66%. Keywords: pulmonary radiographic image, intensity, matlab 2013a, abnormalities

F108 - SMALL FIELD ELECTRON BEAM OUTPUT FACTOR ON LINEAR ACCELERATOR Cahya Wulandari, Syarifatul Ulya, Wahyu Edi Wibowo, Supriyanto Ardjo Pawiro Physics Department of FMIPA, University of Indonesia, email: [email protected]

Abstract: The electron beam has a uniform dose distribution on the surface, it is often used as a cancer therapy, especially at the body surface. Cancers that are located close to healthy organs require treatment using a small field, so that accurate dosimetry for electron beam small field becomes a challenge. This study aims to determine the output factor of the small field electron beam on a Linear Accelerator. Electron beam output measurement performed using ion chamber plan-parallel on the slab solid water phantom at the depth of the reference (zref) and maximum depth (zmax). Ion chamber was irradiated with an electron beam energy of 6, 8, 10, 12, and 15 MeV in the small field of square shaped measuring 1 x 1, 2 x 2, 3 x 3, 5 x 5, 8 x 8 and 10 x 10 cm 2 made of cerrobend. Output factrors is determined by the ratio between the measurement results at a depth of maximum absorbed dose (zmax) and the measurement results absorbed dose at the depth of the reference (z ref). The results obtained show that there is a lateral-scatter electron disequilibrium on a small field electron beam, thus causing variations in engine output. Keywords: Small field, Electron beam, Output factor.


33


F109 - UPAYA MENINGKATKAN MUTU PROSES DAN HASIL BELAJAR MAHASISWA DENGAN OPEN ENDED PROBLEM BERBASIS PROBLEM-BASED-LEARNING PADA KONSEP LISTRIKMAGNET Connie [email protected]

Abstrak: Penelitian ini bertujuan untuk meningkatkan (1) mutu proses pembelajaran fisika melalui metode open ended problem berbasis problem-based-learning. (2) mutu hasil pembelajaran fisika melalui metode open ended problem berbasis problem-based-learning pada konsep listrik-magnet. Melalui kaji tindak penelitian ( PracticionerResearch) dengan tiga siklus, hasil penelitian menunjukan keterampiln berfikir mahasiswa dangan tiga komponen (Meta component, Performance Component, Knowledge-Acquistion component )pada siklus I dengan nilai rata-rata berada pada kategori cukup meningkat menjadi kategori baik pada siklus II dan siklus III. Kemampuan mahasiswa membangun peta konsep pada siklus I dengan nilai rata-rata berada pada kategori cukup meningkat menjadi kategori baik pada siklus II dan siklus III. Respon mahasiswa terhadap penerapan metode open ended problem berbasis problem-based-learning sangat positif. Kata kunci: mutu proses, mutu hasil pembelajaran fisika, Open Ended Problem, berbasis problem-based-learning

F110 - Sintesis Lapisan Tipis TiO2 Dengan Metoda Elektrodeposisi Untuk Aplikasi Lapisan Swa-bersih Dahyunir Dahlan, Agus Rozani Physics Department, FMIPA Universitas Andalas, [email protected]

Abstract: Have synthesized TiO2 thin layer to the application of self-cleaning layer material. TiO2 layer is generated using two electrodes electrodeposition method. Electrodeposition performed on a direct voltage (DC) 3V for 1 hour. Graphite rod was used as the anode. Iron plate which had previously been coated with nickel and chrome was used as the substrate (cathode). Electrolyte solution precursors used TiCl3 solution with a concentration of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8M. Characterization electron microscope (SEM) was used to look at the morphology of the resulting coating. X-ray diffraction (XRD) is used to identify the phase that forms in the lining. While the self-clean coating properties are determined from hydrophobic properties, by calculating the contact angle formed by water on the surface layer of TiO2 that has been generated. It was found that the contact angle is the maximum sample produced by using a solution of 0.4m TiCl3 with contact angle 104.3. Keywords: Electrodeposition, TiO2 layer, self cleaning, contact angel

F111 - Pengaruh komposisi monomer dan cross-linker serta proses ekstraksi template terhadap sifat sensing pada partikel MIP (Moleculary Imprinted Polymer) ametrin David Setyabudi, Idha Royani, Fitri Suryani Arsyad Prodi Fisika, Universitas Sriwijaya, * Email: [email protected]/082281008909

Abstract: The him of this research is to search the best compotition between template, functional monomer, and cross-linker also the process of extraction template so that it is gotten the MIP ametryn particle which have a good sensing component so that potencial to applying as the sensor material. The first process of MIP making is drop chloroform into little container with added the active of ametryn, methacrylic acid (MAA), ethylene glycol dimethacrilate (EDMA), and Benzoyl perokxide (BPO). The cooling - heating methods are used to make a solution become solid. Next, the process cooling - heating is very important to submersion process with asetronitril and washing polymers steps in methanol/acetic acid, methanol/aquabides and methanol. The result of characterization used microscop electron scanning (SEM) showed the morphology of MIP particle. To support the data, fourier transform – infrared spectroscopy (FTIR) is to show it is not happened C-N stretching and N-H stretching that is a amina typical group bond. Keywords: Ametryn. methacrylic acid (MAA), ethylene glycol dimethacrilate (EDMA), and cooling - heating method.

F112 - Pembuatan dan Karakterisasi Magnet Permanen BaFe 12O19 Dengan Penambahan Aditif B2O3 Delovita Ginting 1) Perdamean Sebayang 2) 1

MIPA, Universitas Muhammadiyah Riau, email: [email protected]. 1 Pusat Penelitian Fisika, Lembaga Ilmu Pengetahuan Indonesia, email: [email protected]

Abstrak: Barium Heksaferit komersial dengan penambahan (0, 0.5, 1 dan 2 % berat) B 2O3 telah dibuat dan dianalisa untuk mengetahui perubahan mikrostruktur dan sifat magnetnya. Pencampuran dilakukan dengan metode dry milling menggunakan High Energy Milling melalui proses mechanical alloying selama 48 jam. Proses pemadatan campuran serbuk secara anisotropik dengan tekanan 50 N/cm2. Pengamatan perubahan mikrostruktur campuran dilihat menggunakan SEM-EDX. Hasil analisa termal menggunakan Dilatometer (DIL) 34


Kumpulan Abstrak Kelompok Fisika (F) menunjukkan bahwa material Barium Heksaferit komersial dapat disinter pada suhu 1050 oC dengan suhu optimal sintering berkisar pada suhu 1100oC - 1200oC. Uji karakteristik sifat magnet menggunakan permagraph menunjukkan nilai remanensi, koersivitas dan energi produk Barium Heksaferit dengan penambahan 0,5 % berat B2O3 adalah 2.28 kG dan 2.435 kOe dan 1.05 MGOe merupakan nilai terbaik. Kata kunci: aditif B2O3, Barium Heksaferit, Suhu sintering, Mikrostruktur

F113 - EFEK MODEL PEMBELAJARAN DISCOVERY DAN SIKAP ILMIAH TERHADAP KEMAMPUAN KOGNITIF SISWA Derlina1 ,Siti Maisyaroh 2 1

Program Studi Pendidikan Fisika, 2SMA Dharmawangsa Medan, email: [email protected]

Abstrak: Penelitian ini bertujuan untuk menganalisis kemampuan kognitif siswa yang dibelajarkan dengan model pembelajaran discovery dan pembelajaran ekspositori; untuk menganalisis kemampuan kognitif siswa antara siswa yang memiliki sikap ilmiah di atas rata-rata dan di bawah rata-rata; untuk menganalisis interaksi antara model pembelajaran dengan sikap ilmiah terhadap kemampuan kognitif siswa. Penelitian ini merupakan penelitian quasi experiment. Pemilihan sampel dilakukan dengan teknik random class sebanyak dua kelas, kelas pertama diajarkan dengan model pembelajaran discovery dan kelas kedua dengan pembelajaran ekspositori. Instrumen yang digunakan terdiri dari tes kemampuan kognitif dan angket sikap ilmiah yang telah valid dan reliabel. Data dalam penelitian ini dianalisis dengan menggunakan ANAVA dua jalur. Hasil penelitian menunjukkan bahwa kemampuan kognitif siswa yang dibelajarkan dengan model pembelajaran discovery lebih baik dibandingkan dengan pembelajaran ekspositori. Kemampuan kognitif siswa dengan sikap ilmiah diatas ratarata menunjukkan hasil yang lebih baik dari pada siswa dengan sikap ilmiah dibawah rata-rata. Terdapat interaksi antara model pembelajaran discovery dan sikap ilmiah terhadap kemampuan kognitif siswa. Interaksi ini menunjukkan kemampuan kognitif siswa dominan pada model pembelajaran discovery pada kelompok siswa yang mempunyai sikap ilmiah diatas rata-rata. Kata kunci: Model Pembelajaran Discovery, Kemampuan Kognitif, Sikap Ilmiah.

F114 - IMPLEMENTASI MODEL PROBLEM BASED LEARNING (PBL) BERBANTUAN LKS VIRTUAL UNTUK MENINGKATKAN AKTIFITAS BELAJAR DAN KEMAMPUAN PEMECAHAN MASALAH PADA KONSEP USAHA DAN ENERGI DIKELAS 11 IPA 1 SMAN 4 KOTA BENGKULU Desy Hanisa Putri, Ruri Septiansyah Fakultas Keguruan dan Ilmu Pendidikan Universitas Bengkulu, email: [email protected]. SMA Negeri 4 Kota Bengkulu, email: [email protected]

Abstrak: Penelitian ini bertujuan untuk meningkatkan aktifitas belajar dan kemampuan pemecahan masalah melalui implementasi model Problem Based learning berbantuan LKS Virtual pada mata pelajaran Fisika konsep Usaha dan Energi di kelas 11 IPA 1 SMAN 4 Kota Bengkulu. Penelitian ini merupakan penelitian Tindakan Kelas tiga siklus dengan tahapan perencanaan tindakan, pelaksanaan tindakan dan refleksi. Subjek penelitian adalah siswa kelas 11 IPA 1 berjumlah 32 orang. Pengumpulan data menggunakan tes kemampuan pemecahan masalah, lembar observasi aktivitas Guru dan aktifitas belajar siswa. Data dianalisis secara deskriptif kuantitatif dengan menentukan kategori aktifitas siswa dan nilai rata-rata tingkat kemampuan siswa memecahkan masalah. Hasil penelitian menunjukkan peningkatan aktivitas belajar siswa yang dilihat dari lembar observasi aktivitas belajar siswa pada siklus I Kategori Cukup Aktif, siklus II kategori aktif, siklus tiga kategori aktif sedangkan hasil peningkatan kemampuan siswa dalam memecahkan masalah terlihat dari persentase kemampuan siswa dalam memecahkan masalah pada siklus I sebesar (72%), pada siklus II sebesar (78%) dan pada siklus III sebesar (84%). Dari hasil penelitian dapat disimpulkan bahwa Implementasi model Problem Based Learning berbantuan LKS Virtual dapat meningkatkan aktivitas belajar dan kemampuan pemecahkan masalah pada mata pelajaran Fisika konsep Usaha dan energi dikelas 11 IPA 1 SMAN 4 Kota Bengkulu. Kata kunci: Model Problem Based Learning, LKS Virtual, Kemampuan pemecahkan masalah.

F115 - ANALISIS KONDISI AWAL PEMBELAJARAN FISIKA SMAN KOTA PADANG DALAM RANGKA PENGEMBANGAN BAHAN AJAR FISIKA MULTIMEDIA INTERAKTIF BERBANTUAN GAME Djusmaini Djamas, Ramli, Silvi Yulia Sari, Rio Anshari Jurusan Fisika, FMIPA Universitas Negeri Padang, Email: [email protected]

Abstract: Low understanding of the students in learning physics suspected because physics learning patterns have not been able to optimize students' critical thinking skills. As known, the critical thinking is the key to academic success of a student. Currently, lack of critical thinking skills of students as one of the clear indicators of SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

35

Kumpulan Abstrak Kelompok Fisika (F) low quality of education. If this is allowed, then the physics learning outcomes in the future will be very apprehensive. Therefore, it is necessary to do a preliminary study on the condition of physics learning that has lasted until today. This preliminary analysis will be the basis for developing interactive multimedia teaching materials based on discovery learning aided games to improve motivation and critical thinking skills of high school students. In this paper, we will present the results of the initial needs analysis to develop the interactive multimedia teaching materials based on discovery learning aids game for physics learning in the future. Keywords: Critical Thinking, Discovery Learning, Game, Interactive Multimedia, Physics Learning

F116 - Pembuatan Kalsium Karbonat (CaCO3) Berbasis Cangkang Bekicot (Achatina Fulica) dengan Teknik Kalsinasi sebagai Bahan Baku Biokeramik Dwi Asmi, Desty Wulan Neniati, Anisa Nurdiana, dan Helrita Maulina Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Lampung, Jl. Prof. Sumantri Brojonegoro No.1 Gedung Meneng Bandar Lampung 35145. [email protected]

Abstrak: Cangkang bekicot (Achatina fulica) merupakan salah satu sumber kalsium karbonat alamiah yang sangat potensial. Pada penelitian ini bubuk cangkang bekicot dikalsinasi pada suhu 500 dan 800 selama 3 jam. Karakterisasi bubuk yang dihasilkan dilakukan dengan menggunakan DTA/TG, difraksi sinar-x (XRD), dan FTIR. Hasil analisis termal DTA/TG menunjukkan CaCO3 cangkang bekicot mulai terdekomposisi menjadi CaO pada suhu 743 oC melalui reaksi endotermik. Hasil analisis XRD menunjukkan, pada suhu 500 oC fasa aragonite berevolusi menjadi fasa calcite dan pada suhu 800 oC terdekomposisi menjadi CaO. Hasil analisis FTIR menunjukkan adanya gugus fungsi grup karbonat CO32- pada sampel. Kata kunci: Cangkang bekicot (Achatina fulica), aragonite, calcite, CaO, kalsinasi, biokeramik.

F117 - SINTESIS DAN KARAKTERISASI SUPERKONDUKTOR B(Pb,Sb)SCCO FASE 2223 DENGAN METODE PADATAN Eidi Sihombing, Hariyati Lubis Jurusan Fisika FMIPA, Universitas Negeri Medan, email: [email protected]

Abstract: Samples of superconducting Bi-Sr-Ca-Cu-O pellets has been successfully prepared from carbonate compounds with various initial by means of solid-states reaction carried out under different processing conditions. In addition to that, doping experiment also carried out with Pb and Sb dopants. The samples are characterized by observing the Meissner effect and measuring the temperature transition of resistivity as well as X-ray difraction spectra. Analysis of these data indicate that the highest Tc attained from this experiment is around 110 K and the slow cooling produces better samples. It also shows that Pb doping facilities the growth of the high Tc phase and the largest volume fraction. Keywords: Superkonduktor B(Pb,Sb)SCCO

F118 - KAJIAN AWAL KANDUNGAN MINERAL MAGNETIK PASIR BESI DI KECAMATAN JEJAWI OKI SUMSEL Fera Nopviana, Fitri Suryani Arsyad, dan Idha Royani FMIPA, Pascasarjana Universitas Sriwijaya, e-mail : [email protected]

Abstract: Preliminary study of the identification of magnetic minerals in iron sand from sand mining at District Jejawi OKI regency of South Sumatra is presented. These studies is conducted to provide information on the content of iron sand magnetic minerals and to provide value-added information of local minerals, especially iron sand in Sub Jejawi. The iron sand were extracted using Methanol Soap Bath method (MSB). The properties of structure and magnetic of the iron sand were characterized using XRD and VSM method, respectively. From the results of XRD measurements it is known that the dominant mineral contained in iron sand is Magnetite. The crystal size of the iron sand is 40.9 nm. The value of saturation magnetization (Ms), remanent magnetization (Mr) and field koersifitas of the iron sand is 66.8 emu / g, 11.5 emu / g, and 0.0159 T, respectively. Magnetic properties of iron sand is a type of soft magnetic. Keywords: iron sand, magnetite, VSM, XRD,

F119 - SIMULASI PENGARUH VARIASI DAYA KELUARAN DAN VARIASI PENEMPATAN BAHAN BAKAR TERHADAP TINJAUAN NEUTRONIK PADA TERAS GAS COOLED FAST REACTOR (GCFR) Feriska Handayani Irka(1), Zaki Su’ud(2) (1)

Jurusan Fisika FMIPA Universitas Andalas, Padang, Email: [email protected]. Teknologi Bandung, Bandung

36


(2)

Jurusan Fisika, FMIPA Institut

Kumpulan Abstrak Kelompok Fisika (F) Abstrak: Simulasi pengaruh variasi daya keluaran dan variasi penempatan bahan bakar terhadap tinjauan neutronik pada teras Gas Cooled Fast Reactor (GCFR) telah dilakukan. Bahan bakar yang digunakan adalah uranium alam tanpa pengayaan. Teras reaktor dibagi menjadi 10 region dengan volume sama secara radial. Uranium alam yang akan digunakan untuk bahan bakar reaktor terlebih dahulu dibakar dalam jangka waktu tertentu sehingga menghasilkan bahan bakar fisil yang dapat berfisi di dalam reaktor. Hasil burn up masingmasing tahun ditempatkan dalam teras reaktor dengan konfigurasi tertentu. Variasi penempatan bahan bakar dilakukan supaya reaktor dapat beroperasi menggunakan bahan bakar tanpa pengayaan. Variasi 1 dilakukan dengan memposisikan region 1 berdekatan dengan region 10 dan region 10 ditempatkan di sebelah region 9, begitu seterusnya sehingga region 2 berada di bagian terluar teras reaktor. Variasi 2 dilakukan dengan menukar posisi region 10 dengan 9, sehingga region 1 berdekatan dengan region 9 berikutnya region 9 bersebelahan dengan region 10, begitu seterusnya sampai region 2 berada di bagian terluar teras reaktor. Variasi 3 dilakukan dengan menempatkan region 1 di sebelah region 10, berikutnya region 2, region 9, region 3, region 8 sampai region 6 berada di posisi terluar. Varisi daya keluaran dilakukan untuk daya keluaran 500, 600 dan 700 MWTh. Perhitungan dilakukan menggunakan sistem pengkodean SRAC dan JENDL-32 Library dengan model teras silinder 2D R-Z. Tinggi dan diameter teras aktif masing-masing 350 cm dan 240 cm. Fraksi volume yang digunakan 65% fuel, 10% cladding , 25% coolant. Kajian neutronik reaktor menunjukkan hasil bahwa penempatan bahan bakar variasi 1 dan 2 menghasilkan performa yang baik untuk semua variasi daya. Kata kunci: GCFR, uranium alam, SRAC, daya keluaran, simulasi

F120 - EFEKTIVITAS PENGGUNAAN KERANGKA KERJA BERBASIS TPACK DALAM MENGOPTIMALKAN HOTS SISWA Fifi Fitriani Magister Pendidikan IPA, FKIP Universitas Jambi, Email: [email protected]

Abstract: Technology pedagogy and content knowledge whom popular with TPACK. It is breed as framework to technology integrity in learning. It is pressured to connect between technology, pedagogy, curriculum content that teacher is demanded to understand how to technology, pedagogy, and learning content. It is interacted each other learning model product effective, creative, and whom integrity with technology. All of them are implementation in learning equipment some of researches show that learning integrity and benefit technology indicated good effective result with teacher learning practice and student thinking activity, then some researches whom applied framework TPACK show to innovation design learning is effective. Keywords: Effectiveness, TPACK Framework, HOTS

F121 - PERUBAHAN SIFAT FISIS LINGKUNGAN KOTA PADANG AKIBAT TERJADINYA GERHANA MATAHARI Hamdi Rifai1, Husna2) 1)

Jurusan Fisika, FMIPA, Universitas Negeri Padang (UNP), Jl. Prof. DR. HAMKA, Padang 25132, Indonesia, 2)Program Studi Pendidikan Fisika, Sekolah Tinggi Keguruan dan Ilmu Pendidikan (STKIP) Sumatera Barat, Jl. Gajah Mada, Padang 25137, Indonesia

Abstrak: Pada hari Rabu Tanggal 09 Maret 2016 terjadi peristiwa yang langka pada sebahagian daerah di Indonesia yaitu Gerhana Matahari Total (GMT). Dari 12 provinsi yang mengalami gerhana matahari total, Sumatera Barat merupakan salah satu Provinsi yang dapat mengamatinya. Namun untuk Kota Padang, Gerhana matahari yang dialami sekitar 97 % dengan berbagai efek yang ditimbulkan, salah satunya adalah efek fisis terhadap lingkungan seperti temperatur, intensitas cahaya dan sifat megnetik. Pengamatan dilakukan di Taman IORA Pantai Padang menggunakan peralatan sederhana dimana temperatur lingkungan diamati dengan menggunakan thermometer ruang yang di letakkan pada tempat tertentu; intensitas cahaya diamati dengan menggunakan kamera dan sifat magnetik diamati dengan menggunakan magnet speaker. Pengamatan dilakukan sebelum, sedang dan setelah terjadinya gerhana. Khusus Intensitas cahaya, perubahan dilihat dengan membandingkan hasil potret dengan skala degradasi warna hitam-putih dengan cara mengubah hasil foto berwarna menjadi hitam putih. Dari hasil pengamatan diketahui bahwa Kemudian, perubahan efek fisis yang dtimbulkan gerhana dapat dilihat dari hasil perbandingan dari ketiga hasil pengamatan ini. Dari hasil pengamatan diketahui bahwa temperature turun sekitar 3 derajat Celcius, intensitas cahaya turun sekitar 70%, dan kemagnetan meningkat sekitar 20%. Penghalangan cahaya matahari oleh Bulan menyebabkan turunnya suhu lingkungan dan menurunkan suhu uap air sehingga awan menjadi lebih tebal dan intensitas cahaya menjadi turun. Karena Bumi-Bulan-Matahari berada dalam satu garis lurus, maka gaya grafitasi yang ditimbulkannya membantu mudahnya partikel pasir besi ditarik oleh magnet. Dengan demikian, peristiwa gerhana matahari menyebabkan terjadinya perubahan sifat fisis lingkungan di permukaan Bumi. Keywords: Gerhana matahari total, Perubahan sifat fisis, efek gerhana matahari, IORA, Pantai Padang.


37


F122 - PENERAPAN METODE INQUIRY UNTUK MENINGKATKAN AKTIFITAS DAN HASIL BELAJAR FISIKA SISWA Hesti Widayani MAN Insan Cendikia Jambi

Abstrak: Berdasarkan hasil observasi yang telah dilaksanakan di SMA Negeri 5 Kota Jambi, masalah yang ada dalam kegiatan belajar mengajar adalah rendahnya aktifitas belajar dan hasil belajar fisika siswa. Upaya untuk mengatasi masalah tersebut diperlukan model pembelajaran yang memberikan pengalaman langsung kepada siswa. Metode Inquiry merupakan salah satu model yang sesuai untuk memberikan pemahaman dalam belajar fisika.Tujuan dari penelitian ini adalah untuk meningkatkan aktifitas belajar dan hasil belajar dengan menggunakan metode Inquiry. Penelitian ini dilaksanakan dengan menggunakan pendekatan kualitatif dan jenis Penelitian Tindakan Kelas (PTK), dengan teknik analisis data yang digunakan adalah analisis statistik deskriptif yaitu mendeskripsikan data atau menggambarkan data yang telah diperoleh dari aktifitas dan hasil belajar siswa. Hasil penelitian menunjukkan bahwa pembelajaran Inquiry dapat meningkatkan aktifitas dan hasil belajar fisika siswa.

F123 - PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR FISIKA SISWA SMA Ida Wahyuni dan Wahyu Kristiani N. Zebua . FMIPA, Universitas Negeri Medan, [email protected]

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh model problem based learning terhadap hasil belajar siswa kelas X Semester I pada materi pokok Gerak Lurus di Kelas X SMAN Unggul Subulussalam T.P 2015/ 2016. Jenis penelitian ini adalah quasi eksperimen. Populasi dalam penelitian adalah seluruh siswa kelas X Semester I yang terdiri dari 3 kelas berjumlah 111 orang. Pengambilan sampel dilakukan dengan cara cluster random sampling yaitu kelas X-1 sebagai kelas eksperimen yang berjumlah 37 orang dan kelas X-2 sebagai kelas kontrol yang berjumlah 37 orang. Instrumen dalam penelitian ini ada 2 yaitu tes hasil belajar dalam bentuk essay tes dengan jumlah 10 soal dan lembar observasi untuk melihat aktivitas siswa. Dari hasil penelitian diperoleh nilai rata-rata pretes kelas eksperimen 43,81 dan nilai rata-rata pretes kelas kontrol adalah 44,05. Berdasarkan hasil postes, diperoleh nilai rata-rata postes kelas eksperimen 80,05 dan nilai rata-rata postes kelas kontrol adalah 68,81. Rata-rata nilai keseluruhan nilai aktivitas belajar siswa adalah 72,03% termasuk dalam kategori aktif. Hasil uji t menunjukkan bahwa ada pengaruh model pembelajaran Problem Based Learning terhadap hasil belajar siswa pada materi pokok gerak lurus di kelas X SMAN Unggul Subulussalam T.P 2015/2016. Keywords: Model PBL, Hasil Belajar Fisika

F124 - UPAYA MENINGKATKAN HASIL BELAJAR FISIKA MELALUI PENERAPAN MODEL PEMBELAJARAN DISCOVERY DENGAN PENDEKATAN SAINTIFIK DI SMAN 2 ARGAMAKMUR Indra Sakti, Yanti Purnamasari. Program Studi Fisika JPMIPA FKIP Universita Bengkulu, Jl Raya Kandang Limun Bengkulu 38123, Email : [email protected]

Abstrak: Penerapan model pembelajaran discovery dengan pendekatan saintifik dalam penelitian ini bertujuan untuk meningkatkan hasil belajar siswa. Penelitian ini merupakan penelitian tindakan kelas yang dilaksanakan dalam 3 siklus. Subjek penelitian adalah siswa kelas X MIA1 SMAN 2 Argamakmur Kabupaten Bengkulu Utara yang berjumlah 28 orang. Penilaian hasil belajar siswa dilakukan melalui tes tertulis dan observer. Instrumen yang digunakan dalam penelitian ini yaitu tes hasil belajar dan lembar observasi aktivitas siswa, lembar penilaian sikap, lembar penilaian keterampilan, dan LK. Hasil penelitian yang diperoleh adalah terjadinya peningkatan aktivitas dan hasil belajar siswa yang dapat dijelaskan melalui prosentase ketuntasan kelas yang diperoleh. Berdasarkan penilaian observasi aktivitas siswa, diperoleh rata-rata pada siklus I, siklus II dan siklus III, secara berturut-turut: 20,50 ; 26,50; 28,00. Berdasarkan penilaian tes hasil belajar, prosentasi ketuntasan belajar siswa pada aspek pengetahuan pada siklus I, siklus II, dan siklus III, secara berturut-turut: 75,00% : 82,14% : 89,29. Sedangkan pada aspek sikap sosial dan spiritual untuk siklus I, siklus II dan siklus III diperoleh rata-rata sebesar 2,95 : 3,30 : 3,5, dan hasil belajar pada aspek keterampilan untuk siklus I, siklus II dan siklus III diperoleh rata-rata sebesar 3,04: 3,18: 3,31. Dengan begitu dapat disimpulkan bahwa, penerapan model pembelajaran discovery (discovery learning modle) dengan pendekatan saintifik dapat meningkatkan aktivitas dan hasil belajar siswa pada fisika fluida statis di kelas X MIA1 SMAN 2 Argamakmur. Kata kunci: Pendekatan saintifik, Model pembelajaran discovery, Aktivitas belajar, Hasil belajar siswa

38



F125 - PENGARUH PENAMBAHAN ABU SEKAM PADI SEBAGAI CAMPURAN TERHADAP KEKUATAN BATU BATA Karya Sinulingga FMIPA, Universitas Negeri Medan; email: [email protected]

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh komposisi terbaik abu sekam padi terhadap kuat tekan dan daya serap air batu bata. Metode penelitian ini dilakukan dengan penambahan abu sekam dengan komposisi 0%, 2%, 4%, 6%, dan 8% dengan pencampuran tanah liat secara homogen. Hasil campuran dicetak dan dikeringkan secara alami selama 14 hari, dan dilanjutkan pembakaran selama 3 x 24 jam. Berdasarkan standarisasi SII-0021-1978 kuat tekan batu bata kelas 50 sebesar 5,0 MPa dibandingkan dengan penambahan abu sekam padi pada batu bata sebanyak 8% ternyata menunjukkan daya serap air lebih tinggi dengan nilai section rate yang diijinkan 20 gr/dm2/menit di bandingkan batu bata dengan abu sekam padi 0%, 2%, 4%, dan 6% dengan lama perendaman selama 6 menit. Hasil analisis X-Ray Difraction penambahan 2% abu sekam padi atau tanpa menggunakan abu sekam padi pada tanah liat memiliki fase dominan SiO 2 (Quartz) dengan stuktur Kristal trigonal (hexagonal axes). Kata kunci: Batu bata, Abu Sekam Padi, Daya Serap Air, Kuat Tekan, X-Ray Difraction.

F126 - Pengaruh Kedalaman Pada Output Faktor Lapangan Kecil dengan Detektor Thermoluminesense Dosimeter Rods dan Ionization Chamber Jenis Exradin A16 Laras Ati Nur Fatimah, Andrian Dede Handika, Wahyu Edy Wibowo, dan Supriyono Fisika Medis dan Biofisika, Departemen Fisika, Universitas Indonesia, Kampus Baru UI, Depok 16424, [email protected]

Abstrak: Radioterapi dengan teknik modern menjadi pilihan terapi radiasi yang lebih akurat dan presisi. Radioterapi modern dilakukan dengan lapangan kecil untuk membentuk lapangan radiasi yang konformal dengan bentuk target tumor pasien. Penggunaan lapangan kecil berhubungan dengan Treatment Planning System (TPS) yang menjamin delivery terapi radiasi tepat sesuai dengan dosis yang di preskripsikan oleh dokter. Lapangan kecil merupakan lapangan radiasi yang ukurannya lebih kecil dibandingkan range elektron lateralnya. Keadaan ini memungkinkan gangguan dosis, dimana dosis yang diterima detektor berbeda dengan dosis sebenarnya. Commisioning merupakan prosedur awal dalam menyediakan data pesawat yang digunakan pada perhitungan TPS. Tahap penting dari proses tersebut adalah pengukuran output factor. Output factor penting untuk penentuan ketepatan perhitungan dosis TPS. Penelitian ini bertujuan untuk mengetahui output factor berkas lapangan kecil dengan thermoluminesense dosimeter LiF dan mikrochamber Exradin A16. Lapangan radiasi yang digunakan adalah 10x10 cm²; 4x4 cm²; 2.4x2.4 cm²; dan 0.8x0.8 cm² dengan solid water phantom berukuran 30x30cm². Perbandingan dilakukan dengan perhitungan TPS Pinnacle³. Hasil penelitian menunjukan semakin kecil lapangan, maka nilai bacaan yang terukur akan semakin rendah. Selain itu hasil kurva output faktor berdasarkan pengukuran dengan menggunakan Exradin A16 memiliki deskripansi yang lebih kecil dibandingkan dengan TLD. Hal tersebut ditunjukan dengan kedekatan nilai pengukuran dengan nilai perhitungan TPS. Kata kunci: output factor; radioterapi; lapangan kecil; thermoluminesense dosimeter; ionization chamber

F127 - VARIABILITAS UPWELLING DI PERAIRAN SELATAN JAWA TIMUR Liza Lidiawati1*, Safwan Hadi2, Mutiara R. Putri2, Nining Sari Ningsih2 Jurusan Fisika FMIPA Universitas Bengkulu, Bengkulu1*, [email protected], Gedung FMIPA Jl.Raya Kandang Limun, (0736) 20910. Program Studi Oseanografi FITB Institut Teknologi Bandung2

Abstract: The purpose of this study is to elucidate the mechanism of the effect of Indonesian Throughflow (ITF) on upwelling variability in the southern waters of East Java. This research took place in the waters from East Java to Nusa Tenggara Barat (NTB), between 104o 0' -126o 0' E and 6o 0' - 10o 30' S. The methods employed were descriptive and statistical approaches applied to the simulation results of the Hamburg Shelf Ocean Model (HAMSOM) 3D Baroklinik. ITF transport variability related to interannual phenomena (ENSO and IOD) influenced the upwelling index in the southern waters of East Java. The effect of ITF transport variability on the upwelling index could be seen during El Niño event, in which the strengthening ITF transport moved south (0.80 Sv), causing the upwelling index to increase (0.25). Upwelling intensity is more dominant influenced by IOD than ENSO, so that when El Niño phase simultaneously occur with positive IOD caused the strongest upwelling intensity (0.28) and longer duration (12 months) as in 1997. Whereas, during La Niña occurrences and negative IOD in 1996, the upwelling intensity was weaker (-0.08) and the duration was relatively fixed compared to normal phase (intensity 0.21 with duration 4 months). Keywords: ITF, ENSO, IOD, upwelling index


39


F128 - DESAIN DRIVER ENERGI PADA SEL SURYA DENGAN METODE MAXIMUM POWER POINT TRACKING (MPPT) BERBASIS ATMEGA 328 Mairizwan, Fisika, FMIPA, Universitas Negeri Padang, [email protected]

Abstrak: Sel surya mempunyai karakteristik energi/daya keluaran yang dipengaruhi oleh radiasi sinar matahari, posisi sel surya terhadap matahari dan temperatur pada permukaan sel surya. Oleh karena itu, diperlukan sebuah algoritma untuk mencari titik daya maksimum yang dikenal dengan Maksimum Power Point Tracking (MPPT). MPPT merupakan suatu metode dalam mencari titik maksimum dari grafik karakteristik daya sel surya. Sistem MPPT yang terdiri dari rangkain pengukuran arus dan tegangan, pengontrolan MPPT dengan menggunakan mikrokontroler dan rangkaian DC-DC converter. Driver ini dihubungkan langsung dengan sel surya dan baterai untuk bisa mengetahui efisiensi dan kinerja dari sistem. Berdasarkan data dan analisis yang dilakukan dapat diketahui bahwa driver MPPT dapat bekerja dengan baik sehingga dapat menghasilkan daya keluaran lebih besar dibandingkan dengan tanpa menggunakan sistem MPPT. Pengontrolan pada proses pengisian baterai dapat dengan mudah dilakukan melalui pengukuran dan pengontrolan arus dan tegangan yang masuk ke baterai.

F129 - ANALISIS PEMANFAATAN DUA ELEMEN PELTIER PADA PENGONTROLAN TEMPERATUR AIR Meqorry Yusfi, Frima Gandi, Heru Sagito Palka Jurusan Fisika FMIPA Universitas Andalas, email: [email protected]

Abstract: Peltier element can be used as a heating or cooling in a system. In this research the peltier element is used as a cooler in water.The research purpose is to compare the result between one and two element peltier in water temperature control system. The prototype is designed using LM35 as temperature sensor and Atmega8535 microcontroller to process the output of the sensor before displayed on LCD. On-off control is used to control the system. The results show the ability of a Peltier element decreases with the increasing of the mass of water and increases with the increasing the voltage and current. System with one peltier element have a low rise time comparing with two peltier element but small steady state error. The way to transfer heat from peltier element also have significant effect to get minimum cooling temperature. Keywords: peltier element, control system, water temperature, cooling

F130 - Analisis Kuantum Kasus Potensial Sederhana pada Keadaan Energi Berkas Partikel sama dengan Potensial Sistemnya Moch. Rifqi Tamara, Dian Marini, dan Akhmad Aminuddin Bama Gedanken Experiment Laboratory, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sriwijaya, email: [email protected]

Abstrak: Pada makalah ini dikaji penyelesaian persamaan Schrodinger tak-gayut waktu untuk kasus potensial sederhana dengan 𝑉(𝑥) = 𝑉0 yang energi berkas zarah datang sama dengan potensial sistemnya 𝐸 = 𝑉0 . Kondisi yang demikian itu hampir tidak dijumpai di berbagai buku teks mekanika kuantum maupun pustaka lainnya (umumnya untuk kasus tangga potensial, sumur potensial, dan tanggul potensial). Secara analitik matematis, hasil yang didapat untuk keadaan 𝐸 = 𝑉0 cukup sederhana, yaitu fungsi gelombangnya selalu bernilai konstan, yang juga sangat mungkin trivial. Persoalan yang sederhana ini ternyata mempunyai implikasi (pemaknaan) fisis yang tidak sederhana, utamanya yang terkait dengan syarat kesantunan fungsi gelombang. Sebagai langkah awal, untuk mengatasi kesulitan itu, kami menghipotesiskan adanya kondisi terlarang atau lebih tepatnya daerah terlarang (forbiden region) untuk keadaan 𝐸 = 𝑉0 . Kata kunci: persamaan Schrodinger, tangga potensial, sumur potensial, dan tanggul potensial

F131 - ANALISIS PENYEBARAN LINDI MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI WENNER DI TEMPAT PEMBUANGAN AKHIR (TPA) BANGKINANG SEBERANG Neneng Fitrya, Sri Fitria Retnawaty, Yulia Fitri Fakultas MIPA dan Kesehatan, Universitas Muhammadiyah Riau, email: [email protected]

Abstrak: Air yang terdapat pada sampah hasil pembusukan umumnya mengandung bahan kimia, bakteri dan kotoran. Lindi adalah limbah cair yang timbul akibat masuknya air eksternal ke dalam timbunan sampah. Analisa penyebaran lindi dilakukan disekitar Tempat Pembuangan Akhir (TPA) Bangkinang Seberang, menggunakan metode Geolistrik Konfigurasi Wenner dengan panjang lintasan pengukuran 70 m. Hasil penelitian menunjukkan nilai resistivitas pada lintasan pertama, kedua, ketiga dan keempat sudah terlihat penyebaran lindi, Tetapi dominan penyebaran lindi berada pada lintasan pertama sebelah utara. Hal ini terlihat dari nilai resistivitas terendahnya adalah 2,25 Ωm dan nilai resistivitas tertinggi 6,63 Ωm. Lapisan di identifikasikan tercemar oleh 40


Kumpulan Abstrak Kelompok Fisika (F) lindi dengan nilai resistivitasnya dibawah 10 Ωm (fresh water). Dari hasil nilai resistivitas yang ditunjukkan beberapa lintasan, kemungkinan lindi sudah menyebar ke sekeliling TPA. Arah pergerakan lindi paling dominan terdapat pada lintasan ketiga sebelah timur TPA, dimana pada lintasan ini kontur tanah lebih rendah dan selalu digenangi air. Kata kunci: Geolistrik Konfigurasi Wenner, Lindi, Resistivitas

F132 - KOMBINASI BAHAN CAMPURAN ABU TERBANG dan KAPUR TOHOR yang OPTIMUM UNTUK PENAMBAHAN KUAT TEKAN BATA RINGAN Ninis Hadi Haryanti, Henry Wardhana FMIPA Universitas Lambung Mangkurat (Unlam), Banjarmasin. FTeknik Universitas Lambung Mangkurat (Unlam), Banjarmasin, Email: [email protected]

Abstrak: Berbagai penelitian mengenai pemanfaatan abu terbang batubara sedang dilakukan untuk meningkatkan nilai ekonomisnya serta mengurangi dampak buruknya terhadap lingkungan. Jumlah limbah abu terbang dari PLTU Asam asam unit 1 sampai dengan unit 4 adalah 120 ton per hari atau 3.600 ton per bulan atau 43.200 ton per tahun. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan fly ash dan kapur tohor terhadap kuat tekan bata ringan serta mengetahui kombinasi bahan campuran tersebut yang optimum. Penelitian ini merupakan penelitian kuantitatif melalui pendekatan eksperimen dalam bentuk uji material. Hasil uji kuat tekan bata ringan masih memenuhi syarat SNI 03-0349-1989, yaitu 21 kg/cm2 untuk tingkat mutu IV bata beton pejal. Berdasarkan uji statistik yang dilakukan, empat komposisi campuran bata ringan tidak memberikan pengaruh yang nyata atau berarti (signifikan) terhadap kuat tekan bata ringan. Komposisi sampel A dipilih apabila akan memanfaatkan secara optimal limbah abu terbang batu bara dan tanpa penggunaan pasir dan kapur tohor serta mengurangi penggunaan semen. Pemilihan sampel C dengan mengurangi penggunaan abu terbang serta menambahkan pasir akan memperbesar nilai kuat tekan bata ringan. Apabila komposisi campuran pada sampel D yang dipilih, maka dengan penambahan kapur tohor tidak meningkatkan nilai kuat tekan bata ringan. Pada komposisi campuran ini pemanfaatan limbah abu terbang batu bara tidak maksimal. Komposisi campuran pada sampel B yang dipilih apabila akan memanfaatkan limbah fly ash (abu terbang) batu bara serta tidak menggunakan pasir dan kapur tohor. Komposisi sampel B memberikan nilai kuat tekan yang lebih besar. Kata kunci: abu terbang, bata ringan, kuat tekan.

F133 - KONDUKTIVITAS LISTRIK PANI:ZEOLIT DENGAN BAHAN DASAR BOTTOM ASH BATUBARA Noni Febriani, Hendra Mustika, Afdhal Muttaqin, Sri Fitria Retnawaty FMIPA & Kesehatan, Universitas Muhammadiyah Riau, email: [email protected]

Abstrak: Bottom ash merupakan salah satu dari limbah batubara. Kandungan utama dari bottom ash sama dengan kandungan utama dari zeolit. Polinialin yang sering disebut PANI merupakan salah satu polimer konduktif yang paling banyak diteliti karena keunikan sifat PANI yang stabil, mudah disintesis dan didoping. Telah dilakukan penelitian berupa pengolahan bottom ash yang merupakan limbah batubara menjadi zeolit yang didoping dengan PANI untuk meningkatkan nilai konduktivitasnya. Tujuan penelitian ini adalah mengetahui konduktivitas listrik Zeolit yang berbahan dasar bottom ash batubara dengan menumbuhkan PANI di dalamnya dibawah pengaruh temperature. Bottom Ash disintesis menjadi material baru jenis zeolit dengan metode hidrotermal. Material ini kemudian dimodifikasi dengan polianilin (PANi), agar nilai kondiktivitasnya dapat meningkat dan diaplikasikan sebagai bahan konduktor dengan variasi zeolit (20%, 30%, 50%, 70% dan 100%)pengaruh temperature 30°C - 90°C. Uji konduktivitas dilakukan dengan menggunakan rangkaian sederhana melihatkan bahwa rentang nilai konduktivitas PANI:Zeolit sebesar 0,14454 x10-6 S/cm hingga 1,05105 x10-6 S/cm. Konduktivitas tertinggi dimiliki oleh sampel 3 (70% PANI dan 30% Zeolit) pada temperature 75°C. Kata kunci: Bottom Ash, Zeolit, Hydtrothermal, Conductivity, semiconductor, Polinialin.

F134 - PERANCANGAN SENSOR TINGGI BADAN BERBASIS ARDUINO MENGGUNAKAN SENSOR ULTRASONIK HC-SR04 Nurhidayah, Bayu Hadi Saputro, Samsidar Fakultas Sains dan Teknologi, Universitas Jambi, email: [email protected]

Abstrak: Perancangan sensor tinggi badan saat ini perlu dikembangkan mengingat kebutuhan alat pengukur tinggi badan yang menuntut otomatisasi dengan tingkat ketelitian tinggi. Pada penelitian ini telah dilakukan Perancangan sensor tinggi badan dengan menggunakan sensor ultrasonik HC-SR04 yang dilengkapi dengan bidang pantul. Pengukuran dilakukan dengan cara pengujian terhadap 10 sample menggunakan sensor ultrasonik tanpa dan dengan bidang pantul. Hasil analisis kuantitatif uji pengukuran sensor tinggi badan dengan SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

41

Kumpulan Abstrak Kelompok Fisika (F) menggunakan bidang pantul didapatkan tinggi badan dengan tingkat keakurtan 100% sedangkan pengukuran langsung dengan sensor tinggi badan tanpa bidang pantul menghasilkan pengukuran dengan tingkat keakuratan sebesar 95% dan hasil analisis kualitatif bahwa pengukuran tinggi badan tanpa bidang pantul sangat tergantung dengan sudut sampel pengukuran jadi keakuratan hasil pengukuran masih rendah.

F135 - THE EFFECT OF PROBLEM BASED LEARNING MODELS IN PHYSICS LEARNING OUTCOMES ON STUDENT CLASS X LABUHAN DELI Ratna Tanjung, Dira Gustika FMIPA Unimed Jl. William Iskandar Pasar V Medan 20221, [email protected]

Abstract: This research aimed to know the effect of problem based learning models on physics students learning outcome in subject matter of newton law class X SMAN 1 LabuhanDeli academic year 205/2016. Type of research was quasy experiment. The population were class X consist of 5 class. The sample taken by used cluster random sampling, clas X-2 as experiment class and X-3 as control class. Intrument that used essay test form as much as 10 question and observation sheet test to observe student activity. Data analysis result showed the average of experimental class is 38,05 and control class is 37,58. The postest averrage score for experimental class is 75,85 and control class 61,64. Observation result showed the score average student learning activity in 3 meeting are 63,96%, 72,50%, 79,38%. Based on hypothesis test t calculate= 4,9 and ttable=1,6, so Ha is accepted, it means there are the effect of problem based learning models on physics learning outcome in newton law matter class X SMAN 1 LabuhanDeli Keywords: Problem based learning model, physics learning outcome

F136 - ANALYSIS OF RELATION BETWEEN FLUORESCENCE INTENSITY AND RIPENESS LEVELS OF LOOSED PALM OIL FRUITS Reza Umami dan Minarni Shiddiq Laboratorium Fotonik, Jurusan Fisika, FMIPA, Universitas Riau, Jl. HR. Soebrantas km 12,5 Pekanbaru 28293, email: [email protected]

Abstract: Fluorescence imaging has been developed as a potential nondestructive method for fruit and vegetable quality assessments. Grading palm-oil fresh fruit bunches (FFBs) is a very important step to obtain good quality of crude palm oil for palm oil companies. Fluorescence imaging has not thoroughly been explored for FFB grading. This research was aimed to study the fluorescence intensities of loosed palm oil fresh fruits and their relations to the ripeness levels of the fruits using a chlorophyll fluorescence imaging system. The system composed of a 650 nm diode laser and a monochrome CMOS camera, and color filters. The color filter used was orange color due to excitation by the red diode laser. The samples were loosed palm oil fresh fruits from Tenera variety named Marihat and Topaz taken from the outer layer of palm oil fresh fruit bunches. The samples had three levels of ripeness, underripe, ripe, and overripe, each had 5 loosed fruits. The ripeness categories were determined by an experienced harvester. The illuminated fruit images were recorded by the camera and the gray intensities were obtained using ImageJ software and compared for three ripeness conditions. The anthocyanin concentration of the mesocarp layers of the fruits were measured as comparison. The research results showed that the highest fluorescence intensities were obtained for overripe, followed by ripe, and underripe loosed fruits. These were related to the decreasing of the anthocyanin concentration. The gray intensities of Topaz palm oil fruits were higher by 5.08-11.03% for each of the ripeness levels . These could be due to the colors of Topaz fruits were brighter than those of Marihat fruits. Keywords: Laser-based Fluorescence Imaging, Loosed-Palm Oil Fruits, Ripeness, Anthocyanin concentration, Image

F137 - COMPARISON OF LASER AND LED PERFORMANCES ON FLUORESCENCE IMAGING OF LOOSED PALM OIL FRUITS Ria Fitriani dan Minarni Shiddiq Laboratorium Fotonik, Jurusan Fisika, FMIPA, Universitas Riau, Jl. HR. Soebrantas km 12,5 Pekanbaru 28293, email: [email protected], [email protected]

Abstract: Diode Lasers (LD) and light emitting diodes (LEDS) have been used for fluorescence imaging due to their low cost and wavelength varieties. The fluorescence Imaging has recently been developed as a nondestructive method for fruit and vegetable quality assessments. This research was aimed to study the potential use of both light sources in fluorescence imaging techniques for grading palm oil fresh fruit bunches in attempt to develop a laser based grading system.The samples were loosed palm oil fruits with three ripeness categories. The system consisted of a 650 nm LD and a 680 nm LED and a monochrome CMOS camera with lenses, and color filters. The filter used to obtain the fluorescene intensity was on orange filter with 660,86 nm. The samples were Tenera loosed palm oil fresh fruits with 4 ripeness categories determined by an experienced 42


Kumpulan Abstrak Kelompok Fisika (F) harvester. The categories were underripe 1(f00), underripe 2(f0), ripe(f3) and overripe(f4), each with 5 duplicates. The recorded images of the loosed fruits were analyzed using imageJ software, and further compared. The result showed that the highest fluorescence intensities represented by the gray values of the images were obtained from the overripe fruits, followed by the underripe, and ripe fruits, for both light sources. The intensity levels obtained using LD were higher by 16,67-20,80 % than those resulted from LEDS excepts for f(00) fraction. There are two reasons for higher results obtained user laser, due to their slightly differencesin their wavelength and beam characteristics. Keywords: Fluorescence Imaging, Loosed-Palm Oil Fruits, Ripeness, Diode Laser, LED

F138 - DESAIN NEUTRONIK REAKTOR CEPAT PERPENDINGIN GAS 500 MWt BERBASIS BAHAN BAKAR URANIUM NITRIDE Sari Novalianda1, Menik Ariani2, Fiber Monado2, Zaki Su’ud3 1

Program Studi Fisika, Pascasarjana Universitas Sriwijaya. 2 Jurusan Fisika FMIPA, Universitas Sriwijaya. 3Program Studi Fisika, Institut Teknologi Bandung. E-mail: [email protected]

Abstract: This study presents a calculation of the fuel cell and a fast reactor core fuel-based uranium nitride (UN), with cladding made of stainless steel (SS316) and cooled of helium. The calculation is performed using the program package SRAC. In the fuel cell will produce a survey parameters such as k-eff, burnup level and atomic density. As for the reactor core using CITATION code will generate value for the k-eff fuel cycle. The results of calculations based on the fast reactor with uranium-238 enrichment of 9.5% uranium-235, using a fuel volume fraction of 60%, 10% cladding and coolant 30% shows the value of the criticality of k-eff > 1 (1.008 to 1.051), the reactor still can operate for 10 years without refueling. Keywords: core, neutonik, burnup

F139 - ANALISIS NEUTRONIK PADA DESAIN GAS-COOLED FAST REACTOR BERUKURAN KECIL DAN BERUMUR PANJANG Siti Aulia1, Menik Ariani2, Supardi2, Zaki Su’ud3 1

Program studi Fisika, Program Pascasarjana Universitas Sriwijaya. 2Jurusan Fisika, FMIPA Universitas Sriwijaya. 3Program studi Fisika, Institut Teknologi Bandung. E-mail: [email protected]

Abstract: Neutronic analysis is a stage in the design of reactors that describes the nature of neutrons in the reactor core. This calculation is performed at Gas-cooled Fast Reactor (GFR) Nitride Thorium-based fuels with or without enrichment of uranium-233. Neutronic parameter observed effective multiplication factor (k eff), burnup level and density changes nuclides. Calculations were performed using the SRAC. The calculations show that the most critical conditions using thorium nitride fuel with enrichment of uranium-233 as much as 5%. The volume fraction of the fuel used consisted of 57% fuel, 15% cladding and 28% coolant. K eff value in the first year amounted to 1.004223 until reaching a maximum in the eleventh year amounted to 1.008089. This reactor can operate in periods without refueling for 24 years. Keywords: neutronic, Thorium Nitride, keff, uranium-233

F140 - Kajian Daya Tampung Sungai Godang di Kecamatan Pinggir Kabupaten Bengkalis Riau Sri Fitria Retnawaty Fakultas MIPA, Universitas Muhammadiyah Riau

Abstrak: Rencana Pembangunan Jangka Menengah Daerah (RPJMD) Kabupaten Bengkalis tahun 2010-2015 menjadikan kecamatan Pinggir sebagai kawasan kota transit, petropolis dan agroindustri dikarenakan lokasinya strategis dan dikelilingi oleh kota lain dengan jangkauan darat yang mudah. Hal tersebut menjadikan adanya peningkatan penduduk, aktifitas dan perkembangan industri di daerah Pinggir. Ini tentu saja akan memberikan dampak lingkungan. Dalam perancanaan Pembangunan berkelanjutan, perlu memperhatikan kemampuan lingkungan dalam menerima beban pencemaran. Kajian ini bertujuan untuk mengetahui kemampuan air sungai Godang dalam menerima masukan beban pencemaran dengan menggunakan metoda QUAL2KWE dengan parameter COD, BOD dan TSS. Hasil simulasi QUAL2KW menunjukkan bahwa laju pencemaran COD, BOD, dan TSS masing-masing sebesar 478,789 kg/jam, 87,293 kg/jam dan 304,286 kg/jam. Bagian Hulu dan Tengah Sungai, untuk ketiga parameter (COD, BOD dan TSS) telah melebihi daya tampung sungai, sedangkan di bagian Hilir hanya TSS yang masih dapat ditampung. Sehingga disarankan untuk mengoptimalkan pengendalian, pengawasan, pembinaan dan penegakan hukum terhadap seluruh aktifitas yang berada di sepanjang sungai Godang.


43


F141 - Efek Variasi Persentase Galium pada Penumbuhan Nanorod ZnO yang Di-doping Galium dengan Metode Hidrotermal Sri Novita1*, Iwantono1*,Fera Anggelina 1, Akrajas A. Umar2, Awitdrus1, Siti Khatijah Md Saad2 1

Jurusan Fisika FMIPA Universitas Riau, Jl. H. S. Soebrantas KM 12,5 Pekanbaru. 2Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia, *[email protected] (Sri Novita) dan [email protected] (Iwantono)

Abstrak: Telah berhasil ditumbuhkan nanorod ZnO di-doping galium (Ga) dengan variasi persentasi konsentrasi Ga (0.5 %, 1 %, 1.5 %, 2 %, 2.5 %) di atas permukaan FTO ( Flourine Tin Oxide) dengan metode hidrotermal pada suhu 90 oC selama 8 jam. Penumbuhan nanorod ZnO di-doping Ga dilakukan menggunakan larutan prekusor 0,1 M Zink Nitrat Heksahidrat (ZNH) dan larutan surfaktan 0,1 M Heksametiltetramin (HMT). Pada penelitian ini dianalisa pengaruh persentase konsentrasi atom pendoping Ga terhadap morfologi dan struktur kristal dari nanorod ZnO. Sampel dianalisa menggunakan metode Field Emission Scanning Microscope (FESEM), Energy Dispersive X-ray (EDX), dan X-ray Diffraction (XRD) dan Performansi sel diukur menggunakan Gamry. Foto FESEM menggambarkan bahwa nanorod ZnO yang di-doping atom galium tumbuh di atas permukaan FTO dengan penampang berbentuk heksagonal. Spektrum UV-Vis menunjukkan bahwa penyerapan yang kuat terjadi pada panjang gelombang (340-400) nm untuk semua sampel dengan puncak tertunggi yang dihasilkan dari sampel di-doping galium 2 % dengan intensitas penyerapan maksimum 3,34 a.u. Energi gap masing-masing diperoleh sebesar 3,244; 3,215; 3,255; 3,283 dan 3,206 eV. Pola XRD dari sampel menunjukkan tiga puncak pada 2Ɵ = 35,60o, 36,45o dan 45,79o yang diindekskan dengan bidang kristal (002), (111) dan (102). Foto FESEM menunjukkan diameter nanorod tumbuh sekitar 210 nm untuk semua sampel. Spektrum EDX menunjukkan persentase berat 64,41 %, 15,34 %, dan 0,64 %, masing-masing untuk Zn, O dan Ga sedangkan persentase jumlah atom adalah 42,47 %, 46,02 % dan 0,38 %, masing-masing untuk Zn, O dan Ga. Fabrikasi sel surya tersensitisasi dye dilakukan dengan menyiapkan struktur sandwich yang terdiri dari nanorod ZnO didoping galium, dye, larutan elektrolit, dan nanoparikel platinum yang tumbuh di FTO sebagai katalis elektroda lawan. Analisis karakteristik I-V dari sel menghasilkan efisiensi tertinggi 0,167 % yang diperoleh dari sampel 2% nanorod ZnO di-doping galium. Kata kunci: Doping Ga, nanorod ZnO, hidrotermal

F142 - KUMPULAN NILAI KOEFISIEN UNTUK PENENTUAN KELEMBABAN RELATIP RATA-RATA HARIAN KOTA PALEMBANG Surya Dwi Yurisman Prabu Oktarino, Muhammad Guntur, Arsali, Ngudiantoro Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sriwijaya, email: [email protected]

Abstrak: Sekumpulan nilai {0.481, 0.238, 0.281} diusulkan sebagai pengganti Kumpulan Nilai Koefisien (KNK) {1/2, 1/4, 1/4} pada Formula Operasional Badan Meteorologi, Klimatologi, dan Geofisika (FO-BMKG) untuk menentukan kelembaban relatip rata-rata harian dari data sinoptik pengamatan pada setiap hari pukul 07.00, 13.00, dan 18.00 waktu setempat. Perhitungan dengan formula menggunakan kumpulan nilai ini, terhadap data observasi tiap jam dari Stasiun Meteorologi BMKG Bandara Sultan Mahmud Badaruddin II Palembang, tahun 2007-2012, menghasilkan kesesuaian dengan nilai kelembaban relatip rata-rata harian sebenarnya , dengan koefisien korelasi CORR=0.92, kesalahan rata-rata ME=0.10 0C, kesalahan absolut rata-rata AME=1.38 0C, dan kesalahan akar kuadrat rata-rata RMSE=1.74 0C, yang lebih baik daripada hasil perhitungan dengan FO-BMKG maupun dengan formula menggunakan KNK terpilih untuk perhitungan suhu udara rata-rata harian {0.461, 0.229, 0.310} data dari stasiun dan rentang waktu yang sama. Kata kunci: Kelembaban Relatip rata-rata Harian, Metoda Least Square, Kumpulan Nilai Koefisien (KNK), Formula Operasional BMKG (FO-BMKG),

F143 - Simulasi Audit Dosimetri Treatment Planning System Multicenter Radioterapi Suwandi, Supriyanto Ardjo Pawiro Fisika Medis dan Biofisika Departemen Fisika FMIPA Universitas Indonesia, Kampus UI Depok, 16424, [email protected]

Abstrak: Treatment planning system (TPS) merupakan modalitas penting yang menentukan keberhasilan radioterapi. TPS memerlukan input beam data yang diperoleh melalui komisioning yang panjang dan berpotensi terjadi kesalahan. Kesalahan pada tahap ini mengakibatkan terjadinya kesalahan sistematis yang berimplikasi pada kesalahan dosis yang diterima target tumor. Tujuan penelitian ini adalah melakukan verifikasi dosimetri TPS untuk mengetahui rentang deviasi antara dosis hasil perhitungan TPS dengan dosis terukur di fantom yang merepresentasikan dosis yang diterima target tumor. Penelitian menggunakan fantom CIRS 002LFC yang merepresentasikan thoraks manusia dengan mensimulasikan seluruh tahapan radioterapi berkas eksternal. Fantom dipindai menggunakan CT Scanner dan membuat 8 kasus uji yang hampir sama dengan kondisi di praktek klinik, diujikan pada empat center radioterapi. Pengukuran dosis titik dilakukan menggunakan bilik ionisasi 0,6 cc. Dosis hasil perhitungan TPS dan dosis terukur dibandingkan. Hasil penelitian menunjukkan 44


Kumpulan Abstrak Kelompok Fisika (F) bahwa sebagian besar deviasi antara dosis hasil perhitungan dengan dosis terukur berada dalam kisaran yang diterima. Deviasi diluar kisaran ditemukan pada kasus uji 2 pada dua center radioterapi, sebesar -3,8 % dan 3,92 %. Kesimpulan dari penelitian ini menunjukkan bahwa secara umum TPS yang digunakan untuk perencanaan terapi pada keempat center radioterapi memiliki akurasi yang baik. Kata kunci: Audit dosimetri, TPS, dosis titik, deviasi, target tumor.

F144 - KARAKTERISASI DOSIMETRI FILM GAFCHROMIC EBT3 PADA BERKAS ELEKTRON Syarifatul Ulya1), Wahyu Edy Wibowo2), Cahya Wulandari1), Nuruddin2), Supriyanto Ardjo Pawiro1) 1

Departemen Fisika, FMIPA, Universitas Indonesia, Depok, 16424, email: [email protected]. 2Departemen Radioterapi, RSCM, Jakarta Pusat, 10430, email: [email protected]

Abstract: More then 50 years, electron beam energy was using to treatment of surface target. Measurement 2D was needed to determine surface margin and normal tissue that sparing in the high dose gradient region. Based on recommendation of AAPM TG 55, film is primarily dosimeter in 2D measurement of electron beam because have high spasial resolution, equivalent with tissue and not depended energy. However, there is a limited number of papers discussing the dose respon of gafchromic EBT film. In this study, film EBT3 response on doses and energies variation using electron beams is investigated. Gafchromic EBT3 film was irradiated using electron and photon beam energies. In each energy was given 0 – 500 cGy doses. Scanning Film postirradiation over a period of 72 hours using EPSON V700 and ImageJ were used to film evaluate. Optical Density as parameter to analysis of EBT3 film characteristics. Deviations of OD were required in range of ±4%. Responses of dose refer that EBT3 film have small energy dependence. This deviation agree with studied result of Fan-Chi Su (±4%). Base on dosimetry characteristic of EBT3 film, the influence of energy generated almost uniform so that this film recommended for 2D dosimeter for measuring the electron beam. Keywords: dosimetry, film, optical density

F145 - ANALISIS HASIL BELAJAR SISWA DALAM PEMBELAJARAN SCIENCE ENVIRONMENT TECHNOLOGY SOCIETY (SETS) MENGGUNAKAN LKS BERORIENTASI LIFE SKILLS Wahyuni Satria Dewi Jurusan Fisika FMIPA, Universitas Negeri Padang

Abstrak: Pembelajaran Science Environment Technology Society (SETS) dapat memberikan kesempatan kepada siswa untuk memahami keterkaitan antara sains dengan teknologi, serta siswa diharapkan mampu menganalisa dampak sains dan teknologi tersebut terhadap faktor masyarakat dan lingkungan. Pembelajaran ini dapat memudahkan siswa membangun pemahaman yang baik terhadap konsep dan prinsip fisika dengan cara menghubungkan fenomena alam dan teknologi yang ada di masyarakat dengan kajian fisika. Namun penerapan dari pembelajaran SETS ini saja belum mampu meningkatkan hasil belajar siswa secara signifikan, terutama untuk hasil belajar ranah afektif dan psikomotor. Dari hasil penelitian ini diketahui bahwa pembelajaran fisika belum mampu membekali siswa dengan life skills. Life skills yang rendah berdampak pada kurangnya kemampuan siswa bersosialisasi dalam masyarakat. Penelitian ini bertujuan menganalisis hasil belajar siswa dalam pembelajaran Science Environment Technology Society (SETS) menggunakan LKS yang berorientasi terhadap nilai-nilai life skills. Penelitian ini merupakan penelitian Quasi Eksperimental dengan teknik pengambilan sampel secara Cluster Sampling. Melalui random didapatkan kelas X2 sebagai kelas yang menggunakan LKS berorientasi life skills dan X3 kelas yang menggunakan LKS Non life skills. Data hasil belajar afektif dikumpulkan dari kegiatan observasi berstruktur menggunakan format lembaran observasi, dan data hasil belajar psikomotor dikumpulkan dari kegiatan praktikum menggunakan rubrik penskoran psikomotor. Teknik analisis data hasil belajar afektif dianalisis dengan proporsi nilai afektif dan psikomotor dengan ANAVA dua arah menggunakan uji perbedaan. Hasil analisis terhadap hasil belajar siswa pada ranah afektif dan psikomotor menunjukkan bahwa hasil belajar fisika siswa dalam pembelajaran SETS meningkat. Untuk ranah afektif, pada kelas yang menggunakan LKS yang berorientasi life skills semua aspek sikap mengalami perkembangan yang baik, baik untuk aspek rasa ingin tahu, sikap terbuka, tidak cepat putus asa, menghargai, dan sikap kerjasama. Aspek life skills yang paling menonjol adalah sikap kerjasama. Sedangkan untuk ranah psikomotor, pada kelas yang menggunakan LKS berorientasi life skills memperoleh nilai rata-rata 87,33. Nilai ini jauh lebih tinggi dibandingkan dengan nilai rata-rata kelas yang menggunakan LKS Non life skills yaitu 67,29.

F146 - DESAIN ANTENA HORN PIRAMIDA UNTUK GROUND-BASED SYNTHETIC APERTURE RADAR (GB-SAR) SENSOR Yohandri 1), Bambang Setiadi2), Nofri Ermasari1), Asrizal1) and Yulkifli1)


45


Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Padang. 2Pusat Penelitian Geoteknologi, Lembaga Ilmu Pengetahuan Indonesia (LIPI), Bandung. email: [email protected]

Abstract: The Ground-Based Synthetic Aperture Radar (GB-SAR) is being developed in Instrumentation Laboratory, Physics Department, Universitas Negeri Padang. This work discusses the design of a pyramidal horn antenna for Ground-based Synthetic Aperture Radar (GB-SAR) sensor. The pyramidal horn antenna was designed for both transmit and receive the electromagnetic wave for landslide detection application using GBSAR sensor. The procedure is examining the physical dimensions of pyramidal horn to obtain the required characteristics such as impedance matching and radiation pattern of the antenna. The High Frequency Simulation Software (HFSS) is employed for optimizing the design. Simulated result showed the horn operating with a bandwidth of about 5.79 GHz from 1.36 GHz to 7.15 GHz. The voltage standing wave ratio (VSWR) and the radiation pattern gains in the center frequency (3.5 GHz) are 0.13 and 14 dB, respectively. This simulated result satisfying the characteristic of our GB-SAR antenna requirements. Keywords: Antenna, Horn pyramidal, GB-SAR Sensor, Landslide detection

F147 - DOSIMETRY VERIFICATION OF STEREOTACTIC BODY RADIOTHERAPY (SBRT) FOR BONE METASTASES: CASE STUDY USING HOMOGEN AND INHOMOGEN PHANTOM Yosi Sudarsi Asril1*), Supriyanto A. Pawiro1, Wahyu Edy Wibowo2 1 2

Medical Physic FMIPA University of Indonesia, Lingkar Kampus Raya Street, Depok 16424, email: [email protected]. Radiotherapy Dept. of Cipto Mangunkusumo Hospital, Diponegoro Street No.71, Central Jakarta 10430

Abstract: Cancer causes 13% of all cases the cause of death, and bone metastases is a common complication of cancer that occurs above 40% in oncology patients. Approximately 70% will involve spinal metastases. Stereotactic body radiotherapy (SBRT) is one technique that can handle bone metastases because it can provide a high radiation dose to a small volume with a very tight margin. In the planning of radiotherapy for high-energy photons are often not suitable to estimating dose distribution in inhomogeneous material. Therefore, compared the dose results in homogeneous phantom (CIRS Model 002 H9K) with inhomogeneous phantom (CIRS Model 002 LFC) using three dosimeter; mikrochamber exradin A16, gafchromic film EBT3, and TLD LiF: Mg, Ti rods. The result from both phantom measurements prove that the gafchromic filn EBT3 is the best dosimeter in measuring dose in small field with descripansies dose -0,30% and -1,57% in homogeneous and inhomogeneous phantom. Mikrochamber also showed the ability to get descripansies as good as gafchromic film EBT3 is -0,52% and -3,87% in homogeneous and inhomogeneous phantom. While descripansies using the TLD LiF:Mg, Ti rods is -11,96% and -13,88% in homogeneous and inhomogeneous phantom. Keywords: Bone Metastasis, SBRT, Mikrochamber Exradin A16, Gafchromic Film EBT3, TLD LiF:Mg, Ti rods

F148 - PREDIKSI ARAH SEBARAN DAN KONSENTRASI EMISI DARI CEROBONG ASAP RENCANA PEMBANGUNAN PEMBANGKIT LISTRIK TENAGA MESIN DAN GAS (PLTMG) DURI Yulia Fitri dan Sri Fitria Retnowaty Fakultas MIPA, Universitas Muhammadiyah Riau, email: [email protected]

Abstrak: Telah dilakukan studi prediksi arah sebaran dan konsentrasi emisi dari cerobong asap rencana pembangunan pembangkit listrik tenaga mesin dan gas (PLTMG) – PT PLN Duri dengan menggunakan model dispersi Gaussian. Bahan bakar yang akan digunakan adalah minyak solar High Speed Diesel (HSD) dan gas alam Liquefied Natural Gas (LNG). Hasil studi diperoleh bahwa arah sebaran emisi dominan bertiup dari Barat Daya ke Timur Laut. Hal ini menunjukkan daerah yang sering terkena paparan adalah daerah yang berada di Timur Laut. Konsentrasi emisi dari bahan bakar HSD memiliki konsentrasi lebih tinggi dibandingkan bahan bakar LNG. Konsentrasi tertinggi terjadi pada jarak 600 m dari cerobong baik dari bahan bakar LNG maupun HSD. Secara keseluruhan, Konsentrasi emisi di udara masih dibawah baku mutu (PP No 41 Tahun 1999). Kata kunci: konsentasi gas emisi, Model Dispersi Gaussian

F149 - Pengembangan Aplikasi Sensor Sebagai Alat Ukur Menjadi Alat-alat Praktikum Fisika Dalam Mendukung Implementasi Kurikulum 2013 Yulkifli dan Yohandri KK-Elektronika dan Instrumentasi Jurusan Fisika UNP/ Ketua HFI Cabang Sumater Barat, E-mail: [email protected]

Abstrak: Makalah ini menjelaskan tentang pengembangan aplikasi sensor sebagai alat ukur menjadi beberapa alat praktikum fisika. Urgensi pengembangan sensor kedalam alat-alat praktikum fisika sangat penting untuk mendukung implementasi pendekatan sainstifik dalam kurikulum 2013. Langkah-langkah pendekatan sainstifik dalam pembelajaran fisika menuntut adanya pengumpulan data/informasi. Pengumpulan data/informasi dalam pembelajaran fisika akan lebih nyata dan bermakna jika diperoleh dari percobaan dalam kegiatan praktikum dengan menggunakan peralatan praktikum. Temuan dilapangan adalah kurangnya peralatan praktikum fisika 46


Kumpulan Abstrak Kelompok Fisika (F) bahkan cendrung tidak ada di suatu sekolah, oleh sebab itu pengembangan alat–alat praktikum fisika untuk menunjang pembelajaran fisika sangatlah diperlukan. Alat–alat praktikum fisika yang dikembangkan dengan menggunakan sensor diyakini dapat lebih efektif dan efisien dalam proses penggunaanya, sehingga tujuan dari praktikum dan hasil yang diharapkan dapat lebih optimal. Beberapa sensor yang sudah berhasil kami kembangkan sebagai alat ukur adalah alat ukur visikositas berbasis sensor magnet, suhu dan kelembaman berbasis sensor SHT-75, tekanan berbasis sensor koil datar, muai panjang dan kecepatan sudut berbasis sensor fluxgate, clamp arus dc berbasis sensor GMR. Beberapa alat-alat ukur ini akan kami kembangkan menjadi beberapa alat praktikum fisika. Kata kunci: Aplikasi Sensor, Alat ukur, Alat-alat Praktikum, Fisika, Kurikulum 2013.

F150 - DETEKSI MAGNESIUM DALAM TANAH TERDAMPAK TSUNAMI DENGAN TEKNIK LASERINDUCED BREAKDOWN SPECTROSCOPY (LIBS) MENGGUNAKAN LASER ND –YAG Nasrullah Idris1, Kurnia Lahna1, dan Muliadi Ramli2 1Jurusan Fisika, 2Jurusan Kimia,Fakultas Matematika dan Ilmu Pengetahuan Alam,Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia, email: [email protected]

Abstract: The potency of laser induced breakdown spectroscopy (LIBS) technique as fast inspection tool for checking Mg content in tsunami-impacted soil has been tested. Apparatus of LIBS technique used in this work consists of a Nd-YAG laser, a focusing lens, and an optical multichannel analyzer (OMA) system. Soil sample was collected from the coastal region in Banda Aceh city, Aceh, Indonesia impacted severely by the giant Indian Ocean 2004. As a comparison, soil samples were also taken from the tsunami un-impacted region in Banda Aceh city. The soil samples were made in the form of pellet. For generating luminous plasma, the Nd-YAG laser was focused onto the surface of the pellets using the focusing lens. Emission spectra from the produced plasma were detected using OMA system. As the results, it was found that emission spectral lines of Mg can be detected clearly at ranges of 200 nm-300 nm and 370 nm- 382 nm from both samples, tsunami impacted soil and tsunami impacted soil. It was also found that emission intensity of Mg spectral lines from two samples, tsunami impacted and un-impacted soil are significantly different, namely the emission intensity of Mg lines are far higher in tsunami impacted soil as compared to the tsunami un-impacted soil, implying that the tsunami impacted soil has been polluted by salt. On the other this results revealed the potential use of the LIBS technique as fast inspection tool of Mg content in soil. Keywords: LIBS, Salt, Magnesium, Tsunami impacted soil, Indian Ocean tsunami 2004

F151 - UPAYA MENGATASI MISKONSEPSI SISWA PADA KONSEP LISTRIK DINAMIS DENGAN MEDIA SIMULASI PHET UNTUK MENYIAPKAN SDA MENGHADAPI MEA A.Halim1, Ibnu Khaldun2, Hendri Saputra3 1

Program Studi Pendidikan Fisika, FKIP, Universitas Syiah Kuala, Banda Aceh, email: [email protected], 2 Program Studi Pendidikan Kimia, FKIP, Universitas Syiah Kuala, Banda Aceh, email: [email protected], 3 Guru Fisika SMA kota Banda Aceh, emial: [email protected]

Abstract: In the future, competition in ASEAN and international scope to get a job is getting tougher and sharper, this requiring individuals ready both mentally as well as the skills. In terms of mental expected that learners are able to understand each concept is correct and actual science. While in terms of skills, desirable is that learners are able to use technology to solve the problems that will be faced. Based on the fact that through this research has introduced a computer simulation methods (technology-based), known as PhET (Physics Education Tekhnology). The main objective of this study was to determine the effect of the decline in the use of media PhET misconceptions students on the concept of dynamic electricity. The method used in this research is the pre-experimental method with a one-group pretest and posttest design and the sample were students of class X-IA1 totaling 30 people. Data collected with the test instrument of concepts understanding in the form of multiple choice, answer by used CRI indexs, results of data analysis using SPSS for Windows version 16.0 indicates that a decline in the quantity of each item misconceptions about (-41.49%) and a decrease in the quantity of misconceptions on material discussion of (-42.65%). Thus it can be said that learning with media PhET simulations can reduce the quantity of misconceptions students on the concept of dynamic electricity. Keywords: Misconception, media PhET, dinamics electricity, praconseption, ASEAN, MEA

F152 - PENGEMBANGAN BAHAN PEMBELAJARAN BERORIENTASI PADA MATAKULIAH FISIKA UMUM Jurubahasa Sinuraya FMIPA, Universitas Negeri Medan, email: [email protected]

Abstract: This study aims to produce inquiry-oriented learning materials physics. Stages of development are adapted from the design models Dick and Carey. Implementation of the study consisted of three phases : SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

47

Kumpulan Abstrak Kelompok Fisika (F) planning , development, and limited test involving 15 students and three lecturers consisting of subject matter experts , media specialists and general physics lecturer. The structure of the learning material content of the product consists of eight components: a title page , table of contents , an indicator , a concept map , a brief description of the material and examples,inquiry –oriented student worksheet , competency tests , and bibliography. The data analysis technique is a percentage technique. The results of the analysis according to subject matter experts, media expert and lecturer in general physics in good categories with their respective ideals rate is 80.2 % , 84.5 %, and 82.6 %, while the results of student response belonging to the positive response with a score of 73.5 % .These results illustrate that the inquiry-oriented general physics learning materials have good criteria and fit for use as study materials. Keyword: learning material, inquiry,and general physics

F153 - PEMANFAATAN FILM PVDF UNTUK MENDETEKSI REAKSI KIMIA Ambran Hartono Kelompok Keilmuwan Fisika Material Progam Studi Fisika – UIN Jakarta, Email: [email protected]

Abstrak: Polyvinylidene fluoride (PVDF) merupakan keluarga polimer termoplastik dengan keunikan sifat piezoelektrik-nya. Dalam beberapa tahun terakhir peneliti telah melakukan penelitian dan pengembangan metode fabrikasi dan pemanfaatan film tipis PVDF sebagai elemen sensor. Keunggulan dari material ini adalah memiliki nilai kapasitansi dan resistansi yang besar. Dengan nilai kapasitansi dan resistasi yang besar ini memungkinkan untuk mendeteksi reaksi kimia khususnya glukosa karena melibatkan sistem pelepasan muatan yang besar dan proses reaksi belangsung dengan cepat. Dalam aplikasinya dilakukan pengujian film PVDF untuk mendeteksi salah satu reaksi kimia yaitu untuk mengukur kadar glukosa. Pengujian dilakukan dengan mendeteksi potensial keluaran dari I-V meter untuk berbagai konsentrasi glukosa dengan variasi konsentrasi enzim Glukosa Oksidae (GOx). Dari hasil penelitian diperoleh bahwa nilai potensial keluaran sensor meningkat seiring dengan bertambahnya konsentrasi glukosa. Selain itu juga diketahui bahwa semakin besar konsentrasi enzim semakin besar pula nilai potensial keluaran sensor. Hasil penelitian ini mengindikasikan bahwa film PVDF bekerja dengan baik sebagai elemen sensor untuk mendeteksi reaksi kimia. Kata kunci: Enzym GOx, Glukosa, PVDF, Reaksi kimia, Sensor

F154 - ANALISIS SIFAT MAGNETIK NANOPARTIKEL PASIR BESI DAERAH LEMABANG YANG DISINTESA MENGGUNAKAN HIGH ENERGY MILLING (SHAKER MILL-PPF UG) Nita Susanti, Fitri Suryani Arsyad, Jorena Bangun, Firza Septian FMIPA, Universitas Sriwijaya, email: [email protected]

Research has been done to determine the effect of milling time on the grain size of the crystals and analyzing the magnetic properties of iron sand. Samples were extracted by separating the iron sand particles of impurities by using magnetic finger and methanol soap Bathed (MSB) method. Synthesis of iron sand using high energy milling (HEM). Further characterization testing x-ray diffraction (XRD) and vibrating sample magnetometer (VSM). Milling time systematically carried out for 2 hours, 4 hours and 6 hours. From XRD and VSM measurements before and after milling for 6 hours. XRD testing showed iron sand samples have a phase magnetite (Fe 3O4) and crystal system cubic. Measurement of magnetic properties of each value is the remanent magnetization11.84 emu/gr and 10.604 emu/gr. Keywords: Iron sand,Extraxtion Method, Time Milling Variation, XRD, VSM

F155 - INTERPRETASI DATA LOG SUMUR X-15 LAPANGAN Y DALAM PENENTUAN JUMLAH CADANGAN HIDROKARBON Hendra Budiman, M. Yusup Nur Khakim, Azhar Khaliq Affandi Jurusan Fisika, Fakultas MIPA, Universitas Sriwijaya, email: [email protected]

Abstract: In calculating the hydrocarbon reserves of oil and gas world is a most fundamental thing prior to production, as well as to determine the economics of an oil and gas field. Logging is a graph of depth / time is measured on a ongoing basis within the wellbore. One way is to use Density and Neutron Log Resistivity values obtained porosity and water saturation values Log form. From the log data interpretation, wells X-15 has an average porosity and water saturation 0:14 30% of the 13 zones, hydrocarbon reserves which are most numerous in the zone 4 of 236536.7 A / bo STB, while the least reserve is in zone 9 of 9727.7 A / bo STB. Keywords: hydrocarbon reserves, logging, density log, log neutron, resistivity log

F156 - KOMPARASI DAYA OUTPUT PANEL SURYA DENGAN REFLEKTOR DAN SUN TRACKER Yulinar Adnan, Anggiat Mangaratua 48


Kumpulan Abstrak Kelompok Fisika (F) FMIPA, Universitas Sriwijaya, email : [email protected]

Abstrak: Riset panel surya terus dilakukan agar output daya listrik yang dihasilkan dapat meningkat. Salah satu metode yang dilakukan untuk itu dalam riset ini adalah penambahan cermin datar sebagai reflektor sinar matahari ke muka panel dan penggunaan mikrokontroler sebagai penjejak matahari (sun tracker). Pengukuran arus listrik yang dihasilkan panel surya dilakukan untuk menghitung nilai daya. Hasil perhitungan menunjukkan, daya output panel surya meningkat setelah ditambah reflektor sebesar 19%; naik 23,46% setelah ditambah sun tracker, meningkat drastis sebesar 63,17% setelah ditambahkan keduanya. kata kunci: panel surya, daya output, reflektor, sun tracker

F157 - FILTER FARROW SEBAGAI INTERPOLATOR SINYAL DATA OFDM Assa'idah FMIPA, Universitas Sriwijaya email : [email protected]

Abstrak: OFDM (Orthogonal Frequency Division Multiplexing) adalah salah satu teknik modulasi canggih dalam dunia telekomunikasi. Dalam blok skema dasar OFDM, terdapat proses interpolasi sinyal yang diterima receiver untuk kepentingan prosedur sinkronisasi. Salah satu interpolator yang terbukti efisien sehingga banyak dipakai dalam modem digital adalah Algortima Filter Farrow. Tulisan ini akan menunjukkan keefisienan Filter Farrow dalam mengolah sinyal data OFDM sehingga berhasil merekonstruksi sinyal asli yang diterima oleh receiver. kata kunci: OFDM, modem, receiver, interpolasi, filter Farrow

F158 F159 - FUNGSI GELOMBANG ATOM HIDROGEN DALAM KOORDINAT PARABOLIK Try Mutia Arini, Supardi, Ramlan Jurusan Fisika FMIPA Universitas Sriwijaya, Email: [email protected]

Abstrak: Telah dilakukan kajian teoretis mengenai perumusan fungsi gelombang atom Hidrogen dalam koordinat parabolik. Fungsi gelombang atom Hidrogen dalam koordinat parabolik yang diperoleh secara umum merupakan kombinasi linier dari dua atau lebih fungsi gelombang dalam koordinat bola. Kasus khusus terjadi saat 𝑛𝜉 = 𝑛𝜂 = 0 dan 𝑚 = 𝑛 − 1, yaitu fungsi gelombang dalam koordinat parabolik identik dengan fungsi gelombang dalamkoordinat bola. Kata kunci: fungsi gelombang, atom Hidrogen, dan koordinat parabolik.

F160 - PERANCANGAN HARDWARE PROTOTYPE SISTEM PELACAK POSISI MATAHARI PADA PANEL SURYA MENGGUNAKAN MIKON ATMEGA16 Khairul Saleh dan Muhammad Afriza Program Studi Fisika FMIPA, Universitas Sriwijaya, Indralaya, Indonesia, Email: [email protected]

Abstrak: Penelitian ini melakukan perancangan miniatur pelacak posisi matahari menggunakan dua buah sensor LDR untuk mengindera arah gerak matahari. Pelacak posisi matahari digunakan untuk menggerakkan sel surya agar mengikuti arah gerak matahari. Rangkaian elektronik terdiri dari rangkaian catudaya, rangkaian mikrokontroler, ATmega16, LCD, rangkaian driver motor stepper, dan rangkaian sensor LDR. Rancangan mekanik menggunakan satu sumbu putar dengan motor stepper tipe unipolar sebagai penggerak agar sel surya dapat mengikuti gerak matahari dari timur ke barat. Penelitian ini bertujuan untuk merancang sebuah miniatur pelacak posisi matahari, serta melakukan pengujian terhadap kemampuan miniatur tersebut. Miniatur ini dikendalikan secara otomatis oleh program yang telah dimasukkan ke dalam mikrokontroler. Hasil pengujian menunjukkan bahwa miniatur ini memiliki gerakan yang cukup baik dengan kecepatan motor yang konstan saat bergerak ke timur maupun ke barat. Hasil pengukuran menunjukkan kenaikan tegangan sel surya mencapai 2,73 % dibandingkan dengan yang tidak menggunakan sistem pelacak posisi matahari. Kata Kunci: Mikrokontroler, Sensor Cahaya, Motor Stepper


49

JADWAL ACARA SEMIRATA JADWAL PARALLEL SESSION KUMPULAN ABSTRAK

Recommend Documents