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All Journal Komunikasi Fisika Indonesia Unri Conference Series: Community Engagement Journal of Nursing Science Update Detector: Jurnal Inovasi Riset Ilmu Kesehatan Jurnal Ilmu Kedokteran dan Kesehatan Indonesia Open Access DRIVERset JUKEJ: Jurnal Kesehatan Jompa Science, Technology, and Communication Journal

Erwin Erwin

Universitas Riau

Author-ID : 2979884

Humanities Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Veterinary

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VISUALISASI POTENSIAL LISTRIK DI ANTARA DUA PLAT SEJAJAR BERHINGGA DENGAN PROGRAM KOMPUTER BERBASIS MATLAB Eviliony Eviliony; Erwin Erwin; Antonius Surbakti
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

The calculation of electric potential between two parallel plates with finite size is difficult work, visualization of the issue comprehensively is needed. In this paper, visualization of electric potential between two parallel plates with finite size has been done by developing a MATLAB based computer program. The electric potential was calculated by solving two dimensional Laplace equation. There are two parts of the program that have been developed, the menu program and the main program. The menu program was provided to store the input data required in the calculation. While, the main program served toperform calculations and visualization of the electric potential. The visualization of the electric potential was shown in the mesh and contour graph. The results showed that the program is applicable for various sizes of plates, and the electric potential in each position can be calculated and visualized. However, the computer programs has some limitations, such as for perfoming calculations of electric potential. For plate width ( ) of m, distance of plates ( ) of m, and initial potential ( )of Volt, the electric potential in coordinate (20,0.5) is not defined (NaN).

PENGARUH UKURAN BOLA MILLING TERHADAP NILAI SUSEPTIBILITAS MAGNETIK DAN DISTRIBUSI UKURAN NANOPARTIKEL MAGNETIK DISINTESIS DARI PASIR PANTAI SUNGAI SUCI BENGKULU Nindy Daviny; Erwin Erwin
Komunikasi Fisika Indonesia Vol 18, No 3 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.3.204-207

Telah dilakukan penelitian tentang suseptibilitas magnetik dan distribusi ukuran nanopartikel magnetik pasir pantai Sungai Suci Bengkulu. Sampel disintesis menggunakan ball milling. Partikel oksida besi dan non-besi oksida dari produk ball milling dipisahkan menggunakan magnet Neodymium Iron Boron (NdFeB). Pengukuran induksi magnetik pada produk ball milling telah dilakukan dengan menggunakan probe magnetik Pasco. Produk NdFeB digiling selama 60 jam menggunakan kombinasi bola milling dengan diameter 0,5, 0,7 dan 1,5 cm dan produk tersebut dinamakan produk BM1. Produk ini dibagi menjadi tiga bagian yang disebut BM1A, BM1B, BM1C kemudian digiling secara terpisah selama 40 jam masing-masing menggunakan bola milling berdiameter 0,5, 0,7 dan 1,5 cm. Produk dari ball milling ini dinamakan BM2A, BM2B dan BM2C. Hasil penelitian menunjukkan bahwa suseptibilitas magnetik produk BM II meningkat dengan bertambahnya ukuran bola milling yaitu 9215,48 × 10-5, 10097,64 × 10-5 and 11056,86 × 10-5 untuk ukuran milling ball masing-masing 0.5, 0.7 dan 1.5 cm. Distribusi ukuran partikel dari sampel ditentukan dengan menggunakan Particle Size Analyzer (PSA). Hasil penelitian menunjukkan bahwa sebaran ukuran partikel pada persentase 10% berturut-turut adalah 0,40 µm dan 1,30 µm untuk BM2A dan BM2C.

ANALISIS SIFAT MAGNETIK DAN STRUKTUR PARTIKEL PASIR BESI PANTAI ARTA PARIAMAN SUMATERA BARAT MENGGUNAKAN BALL MILLING Wita Yulia; Erwin Erwin
Komunikasi Fisika Indonesia Vol 16, No 2 (2019)
Publisher : Universitas Riau

Analisys of magnetic properties and structure of particles of iron sand of Arta, Pariaman beach West Sumatra. Has been conducted the iron sand samples were dried, then the iron sand separation process was carried out using Iron Sand Separator (ISS). Next, the sample was milled for 30, 60 and 90 hours. The separation between magnetic particles and non magnetic particles was done using Neodymium Iron Boron (NdFeB) magnet. Magnetic induction measurements were carried out using Pasco PS-2162 Magnetic Probe which measured the total magnetic induction of solenoid (solenoid with core sample and milled sample(consentrate II)) as a function of electric current of 1-8 A for a fixed distance of 1 mm. Identification of the content of elements contained in iron sand before and after processing with Ball Milling for 90 hours was carried out using X-Ray Fluorescence (XRF). The phase of magnetic particles processed by Ball Milling was determined using X-Ray Diffraction (XRD). The calculation results show that the magnetic susceptibility of the sample increases with increasing Ball Milling time, from (69426,19 × 10-5 – 80332,13 × 10-5). These values are in the interval 220 - 380.000 × 10-5of the Ilmenite mineral. The magnetite phase appears more than the maghemite phase and the hematite phase after Ball Milling for 90 hours. The particle size of magnetik particle decreases as milling time increase, this trend is confirmed by the result of XRD.

PEMETAAN NILAI SUSEPTIBILITAS MAGNETIK PASIR PANTAI GANDORIAH PARIAMAN SUMATERA BARAT Putri Vanera Puspita; Erwin Erwin
Komunikasi Fisika Indonesia Vol 17, No 1 (2020)
Publisher : Universitas Riau

Mapping of magnetic susceptibility values of sand of Gandoriah beach, Pariaman West Sumatera has been carried out. The composition of sand beach was identified using X-Ray Fluorescence Spectroscopy (XRF) and the map of magnetic susceptibility and mass susceptibility of the sample were determined using Software Surfer 11. The samples were collected based on grid technique from 25 points location. The separation between magnetic particles and nan magnetic particles was done using iron sand separator for 1 time process.The result of the calculation of the magnetic degree of the sample using Iron Sand Separator for 1 time prosess showed that the values are in the range of 3,88 %-5,12 %. Magnetic and mass susceptibility values of the sample are in the range of (603,3-1351,46)×10-5 and (112,76–1086,85)×10-8 m3/Kg respectively. Magnetic and mass susceptibility of the concentrate (product of iron sand separator) are in the range of (1367,55–2155,9)×10-5 and (927,41–1774,28)×10-8 m3/Kg respectively. These values are in the range of Ilminate mineral that is (220-380000)×10-5 and (46-80000)×10-8 m3/Kg respectively. The percentage of Fe and Ti increases from 6,276 % to 54,549 % and from 0,441% to 5,102% respectively after being processed by iron sand separator. The results also showed that magnetic susceptibility values increase toward the sea water.

PREPARASI PARTIKEL MAGNETIK DARI PASIR BESI PANTAI BATANG KAPAS SUMATERA BARAT MENGGUNAKAN METODE BALL MILLING Tahayati Ichsan; Salomo Salomo; Erwin Erwin; Usman Malik
Komunikasi Fisika Indonesia Vol 15, No 2 (2018)
Publisher : Universitas Riau

Preparation of micro magnetic particle and its magnetic propertis from iron sand beach of Batang Kapas west Sumatera using Ball Milling method has been done. Prior to the Ball Milling process, the samples were processed by iron sand separator (ISS) in order to separate between magnetic particles and non magnetic one. Next, the concentrates from ISS were crushed by Ball Milling method as a function of time namely 20, 40, and 60 hours. For separation between magnetic particles and non magnetic one, then NdFeB magnet was utilized. The results showed that the magnetic degree of the sample is about 0,5%. Measurements of magnetic induction solenoids were carried out using a Magnetic Probe Pasco PS -2162 as a function of current (2, 4, 6, 8 and 10) A and a functions of distance (1, 2, 3, 4, and 5) mm. Then the total magnetic induction of the solenoid (solenoid with sample core and concentrate) was measured as a function of an electric current for a fixed distance of 1 mm. The calculation results showed that magnetic susceptibility and mass susceptibility increase with Ball Milling time from (3376,400-7765,130). This value is within the interval of 46-80000 which is the interval of Ilmenite mineral (FeTiO3; Antiferromagnetik). The increase in magnetic susceptibility and mass susceptibility of samples processed by Ball Milling is thought to be due to the increasing number of magnetic particles in the sample.

STUDI EKSPERIMEN TEKNOLOGI PEMBANGKIT LISTRIK TENAGA ARUS LAUT (PLTAL) MENGGUNAKAN SAVONIUS BACH ROTOR Yusiran Hikmat; Erwin Erwin
Komunikasi Fisika Indonesia Vol 16, No 2 (2019)
Publisher : Universitas Riau

Design and experiment of ocean current power generation system have been carried out using the Bach Savonius rotor. In this research, the influence of the velocity of ocean currents, the number of turbine blades, and the blade arc angle of the generator output power are studied. The results showed that the turbine output power is strongly influenced by the velocity of ocean currents where the velocity values of ocean currents varied in the range 0,63-1,98 m/sec. The maximum elctrical power of the turbine occurs at a current velocity of 1,98 m/sec of 26,88 Watts. The number of turbine blades has a significant effect on turbine output power. The turbine reaches maximum power is found in the rotor with a number of 3 blades with a power coefficient of 0,1176 on the tip speed ratio of 0,359. The blade arc angle is varied at angles of 90˚, 135˚ and 165˚. The blade arc angle 135˚ gives the best performance with a power coefficient of 0,102 on the tip speed ratio of 0,298.

PENENTUAN SIFAT MAGNETIK PASIR DAN DEBU SEPANJANG JALAN KARTAMA KOTA PEKANBARU MENGGUNAKAN MAGNETIC PROBE PASCO PS-2162 Maria Sonya Nauli Nainggolan; Erwin Erwin; Yanuar Yanuar; Usman Malik
Komunikasi Fisika Indonesia Vol 16, No 1 (2019)
Publisher : Universitas Riau

Topsoil is the recipient of various kinds pollutants, especially heavy metals. Heavy metals have been detected in sand and dust along the highway. Measuring the magnetic properties of road sediment along Kartama road in Pekanbaru City has been done. The magnetic properties measured are magnetic degree, magnetic and mass susceptibility using magnetic induction measurement. The Samples were taken at sixteen locations with the amount of 1 or 2 kg for each point location, the samples were named as samples 16, 7a7e, 8a8e. The magnetic particles of the samples were separated from sand and dust using Iron Sand Separator and later using Neodymium Iron Boron (NdFeB) magnet. The total magnetic induction of the samples and concentrates were measured using Pasco Magnetic Probe PS-2162. In order to measure the magnetic induction of the samples, a solenoid of 3 cm in diameter, length of 10 cm and 2000 of windings was made. The empty solenoid magnetic induction was measured as a function of applied current ranging from 210 A and as a function of horizontal distance of 15 mm from the the solenoid ends. Total magnetic induction (samples and concentrates) was measured for the applied currents of 6 A. The results showed that the highest magnetic degree obtained from the sample number 7e that is 2.54% and the lowest level obtained from the sample number 3 that is 0.17%. The highest magnetic susceptibility value obtained from the sample number 7b was is 9158.12 , and the lowest magnetic susceptibility value obtained from the sample number 2 with the value of 3125.52 . Based on the mass susceptibility values of the concentrate obtained that the sand and dust along the road Kartama Pekanbaru which are in the interval 4.6 to 8.0, they implies that the mass susceptibility of the samples is in the range of Ilmenite phase FeTiO3or antiferromagnetic.

PENENTUAN SIFAT MAGNETIK DAN MORFOLOGI PARTIKEL MAGNETIK PASIR BESI PANTAI ARTA PARIAMAN SUMATERA BARAT Ayu Wulandhari; Erwin Erwin
Komunikasi Fisika Indonesia Vol 17, No 1 (2020)
Publisher : Universitas Riau

Telah dilakukan penelitian tentang sifat magnetik dan ukuran partikel dari pasir besi pantai Arta Pariaman Sumatera Barat menggunakan metode Ball Milling. Sampel pasir besi dipisahkan menggunakan Iron Sand Separator (ISS) sebelum dilakukannya proses penghancuran menggunakan Ball Milling dengan variasi waktu 30 jam, 60 jam, dan 90 jam, kemudian dilakukan Ball Milling lanjutan selama 30 jam pada sampel hasil Ball Milling 90 jam dengan ukuran bola yang diperkecil sebesar 0,6 cm. Untuk pemisahan antara partikel magnetik dan non-magnetik pada hasil Ball Milling menggunakan magnet batang Niodinium Iron Boron (NdFeB). Sifat magnetik seperti suseptibilitas magnetik dan suseptibilitas massa dapat diketahui dengan menggunakan sensor Pasco Magnetic Probe PS-2162 dengan kumparan solenoid 2000 lilitan, panjang 10 cm, dan diameter 3 cm, sedangkan komposisi dari pasir besi menggunakan X-Ray Fluorescence (XRF). Ukuran dan bentuk partikel magnetik ditentukan dengan Scanning Electtron Microscope (SEM). Dari penelitian ini hasil ukuran partikel yang didapat sebesar 935 nm untuk waktu Ball Milling 90 jam dan ukuran dalam rentang sebesar 519 nm untuk waktu Ball Milling 120 jam/90 jam + 30 jam, Bentuk partikel pasir besi hampir bulat untuk masing-masing waktu Ball Milling. Kandungan pasir besi sebelum dan sesudah di Ball Milling selama 120 jam yaitu 6,118% dan 67,746%. Suseptibilitas massa meningkat dari 27955,7 X 10-8 m3/kg menjadi 31478,5 X 10-8 m3/kg . Nilai ini berada dalam interval mineral Ilminite (46-80000) X 10-8 m3/kg .

Produksi ikan asin dengan menerapkan teknologi pengeringan berbasis energi biomassa yang ramah lingkungan untuk meningkatkan ekonomi masyarakat di Desa Buluh Cina, Kecamatan Siak Hulu, Kampar Krisman Krisman; Erwin Erwin; Hamdi Hamdi; T Emrinaldi
Unri Conference Series: Community Engagement Vol 1 (2019): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.1.333-340

The potential of the economic sector of the community in the village of Buluh China, Siak Hulu Subdistrict, Kampar which has potential fisheries. The system of processing fish into salted fish products carried out through fish preservation by drying methods has long been practiced by fish preservative entrepreneurs. In particular, fish drying activities have long been a livelihood for salted fish processing communities in Buluh China village, Siak Hulu Sub-District, Kampar. However, in general, the process of preserving fish through drying methods by relying solely on sunlight is not optimal. The process of drying fish in Buluh China village, Siak Hulu Subdistrict, Kampar is still traditionally carried out, which is dried in the sun. This process takes a long time, it takes time in drying fish 2 to 4 days and that too depends on the sun. The purpose of this activity is to apply biomass-based drying technology for salted fish production. The method used is to make a dryer, biomass burning furnace, drying room (box). The results of this service show high enthusiasm from the community where salted fish production can be obtained in just 1.5 hours with temperatures in the drying chamber reaching 35 to 40 degrees Celsius.

PENGARUH DOPING MANGAN TERHADAP KOMPOSISI DAN SIFAT KRISTALINITAS PARTIKEL OKSIDA BESI PASIR ALAM SUNGAI ROKAN DIPREPARASI DENGAN METODE BALL MILLING Rahman Kurniawan; Salomo Salomo; Erwin Erwin; Defrianto Defrianto
Komunikasi Fisika Indonesia Vol 19, No 2 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.19.2.113-118

The composition, crystallinity and magnetic susceptibility of nanoparticles in natural sand of the Rokan River, Riau Province have been investigated. After the iron sand separator (ISS) process, the natural sand samples were separated using NdFeB magnets to separate iron oxide particles and other non-ferrous oxides. For 70 hours, the NdFeB product was prepared using the ball milling method to produce BM products. The BM products were ball milled for 30 hours with a manganese doping concentration of 0 wt.%; 5 wt.%, and 10 wt.% produced DM 0, DM 5 and DM 10 products. Magnetic susceptibility values increased based on the values of B0 and BT measured using Pasco Magnetic Probe PS-2162. The results of XRD analysis of DM products contain a hematite phase (α-Fe2O3) which has a hexagonal structure. The crystal size increased along with the increasing concentration of Manganese from 25.494 nm; 25,542 nm to 25.669 nm. The results of XRF analysis of DM products on Fe elements decreased in percentage with increasing Manganese concentration from 18.083%; 15.407% to 12.947%. Other chemical elements such as Si, Al, K, P, Ti, Ca, Ti, Cr, Zn, V and Pb also decreased.

Co-Authors Almawaddah Rahmah Antonius Surbakti Ayu Wulandhari Defrianto Defrianto Eviliony Eviliony Fitriana Fitriana Hamdi Hamdi Hellena Deli Herlina Herlina Krisman Krisman Maria Sonya Nauli Nainggolan Nindy Daviny Putri Vanera Puspita Rahman Kurniawan Reni Zulfitri Safira Nur Hasikin Salomo Salomo Salomo Salomo Siska Afrilya Diartin Sri Wahyuni Suhaivi Hamdan T Emrinaldi Tahayati Ichsan Usman Malik Wan Nishfa Dewi Wita Yulia Yanuar Hamzah Yufitriana Amir Yulia Rizka Yusiran Hikmat

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