Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

3.096

P-Index

This Author published in this journals

All Journal Jurnal Reka Lingkungan Komunikasi Fisika Indonesia JOURNAL ONLINE OF PHYSICS Unri Conference Series: Community Engagement

Usman Malik

Universitas Riau

Author-ID : 2979891

Humanities Earth & Planetary Sciences Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Physics

Published : 29 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3

PENGGUNAAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI SCHLUMBERGER UNTUK MENGETAHUI LAPISAN STRUKTUR LITOLOGI BAWAH TANAH DI TAMAN ILMU UNIVERSITAS RIAU Aprianturi Rega; Usman Malik
Komunikasi Fisika Indonesia Vol 19, No 1 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.19.1.35-38

Research has been carried out at the Science Park, Riau University to determine the layers of underground lithological structures using the one-dimensional Schlumberger configuration Geoelectric resistivity method. Research data processing is done using Software Progress. The results of data processing show that lanes 1 and 2 consists of layers of alluvium, sand, gravel, and clay. On track 1, the highest soil layer resistivity value of 863.14 m is interpreted as a layer of sand and gravel at a depth of 2.28 - 31.12 m, while the smallest is 226.90 m which can be interpreted as a layer of clay at a depth of 0.68 - 1.28 m. On track 2, the highest soil layer resistivity value of 1027.83 m is interpreted as a layer of sand and gravel at a depth of 0.28 - 1.15 m, while the smallest is 188.08 m interpreted as a clay layer at a depth of 0 - 0.28 m. The highest and lowest resistivity values tend to be identified as sand, gravel, and clay, respectively.

ANALISA TINGKAT RESAPAN TANAH BERDASARKAN PENGUKURAN PERMEABILITAS TANAH (Studi Kasus Kecamatan Tampan Kota Pekanbaru) Usman Malik; Indra Gunawan; Juandi M
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

Research was conducted to analyze the soil absorption level based on measurements of soil permeability in District Tampan Pekanbaru City, by taking soil samples for 16 units in four villages namely Simpang Baru, Delima, Tuah Karya, and Sidomulyo Barat which consists of four research blocks. Data inputted into the surfer’s software 11 to be processed so as to produce a contour map of soil absorption level. The results that highest soil absorption of the land in Tuah Karya Village of 108,090.50 m3/year whereas lowest soil absorption of the land in Simpang Baru Village of 91,149.35 m3/year. High soil absorption level caused by open spaces area was large and the amount of rainfall that absorbed into the soil and soil absorption coefficient was high. While the low soil absorption level caused by open spaces area was small and the least rainfall that absorbed into the soil and the soil absorption coefficient is low.

RANCANG BANGUN ALAT PENGERING SISTEM ISOLATOR BERLAPIS PAPAN BATU KERIKIL SEBAGAI PENYIMPAN PANAS Juandi M; Ismawan Ismawan; Usman Malik
Komunikasi Fisika Indonesia Vol 15, No 2 (2018)
Publisher : Universitas Riau

Research on the design of a dryer with an insylation system made of pebble and board for heat storage. This research as conducted using experimental method by making a dryer using biomass energy sources . The objectives of the study were to measurins the heat rate lost from each side of the dryer, the heat energy generated from the combustion of the coconut shell the moisture content of drying wet clothing, the efficiency of the drying time The results showed the design of a dryer with an insylation system made of pebble and board for heat storage works well. The temperature inside the room is ranges from (40-68°C). The total rate of heat energy lost in the 10th minute is 6,527.54 J/s and continued to decrease to 60th minute by 3263.77 J/s. The heat energy rate resulting from the combustion of coconut shells at 10th mins is 10520 J/s and continued to decrease to 60th minute by 1753.33 J/s. Reduced moisture content of wet clothes reached 2.439% at 60 minutes. Efficiency of drying time reaches 85.7%. The efficiency of the average biomass energy source is 90%.

PERBANDINGAN NILAI SUSEPTIBILITAS MAGNETIK AIR LAUT MENGGUNAKAN METODE QUINCKE DI PANTAI SUMATERA BAGIAN TENGAH Muhammad Zul Ilmi Rangkuti; Salomo Salomo; Usman Malik
Komunikasi Fisika Indonesia Vol 17, No 1 (2020)
Publisher : Universitas Riau

Telah dilakukan penelitian perbandingan nilai suseptibilitas magnetik air laut di pantai barat dan timur sumatera bagian tengah menggunakan metode Quincke. Jumlah sampel yang diambil dari penelitian ini sebanyak 500 ml tiap-tiap lokasi. Jumlah titik lokasi sampel adalah 24 didapatkan dari tiga pantai barat sumatera bagian tengah dan satu pantai timur. Metode yang digunakan untuk pengambilan sampel adalah fungsi jarak dengan rentang 300 m dari tepi pantai. Induksi magnetik solenoida diukur menggunakan Probe Magnetic Pasco Ps-2162 dengan dua buah solenoid 3000 lilitan. Ketika arus dinaikkan induksi magnetik semakin besar. Nilai suseptibilitas magnetik ( χ ) air laut pantai barat menunjukkan rentang -1,04 x 10-5 sampai -4,53(x 10-5). Sampel merupakan bahan diamagnetik. Nilai suseptibilitas magnetik ( χ ) air laut pantai timur menunjukkan rentang -0,5 x 10-5 sampai -1,46(x 10-5).sampel merupakan bahan diamagnetik. Salinitas dan pH menyebabkan perbedaan nilai suseptibilitas magnetik air laut.

PEMANFAATAN KARBON SEBAGAI FILTER UNTUK PENGENDALIAN PENCEMARAN AIR SUNGAI OLEH LOGAM Zn (seng) DARI LIMBAH PABRIK KELAPA SAWIT DI KABUPATEN KUANSING Riad Syech; Restina Restina; Usman Malik
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

A research has been conducated on using charcoal as a filter to control river water pollution with heavy metals from palm oil mill waste based on physical parameters in Kuantan Singingi district using SSA method. The process begin with taking sample from palm iol mill waste output, the the temperature and electrical conductivity of it is mesured. Heavy metal concentration (Zn) is mesured with Atomic Absorption (SSA). The highest electrical conductivity value before filtrasion was found in factory A sampel. The value is 8,87 x 10-4 Ωm-1with 0,241 mg/l Zn concetration. Electrical conductivity value decreased after filtration to 7,11 x 10-4 Ωm-1 with 0,216 mg/l mg/l Zn concetration. While the lowest electrical conductivity value before filtration was found in factory C sample. The value is 4,65 x 10-4 Ωm-1with 0,169 mg/l Zn consetration. Conductivity value decreased after filtration to 4,26 x 10-4 Ωm-1with 0,154 mg/l Zn contretation. These result explain that using charcoal as a filter for pollution control is uqite effective.

PEMETAAN SEBARAN MATA AIR PANAS DI DAERAH OBJEK WISATA DESA PAWAN MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS KONFIGURASI WENNER Fadli Abdillah; Usman Malik
Komunikasi Fisika Indonesia Vol 18, No 1 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.1.35-41

Geothermal is one of the many natural resources that provides benefits to human such as using hot spring as a natural tourism spot. Hot spring in Pawan Village need to be researched to explore the presence of Hydrotermal. In this study, the distribution of hydrotermal that occur based on the resistivity of subsurface rocks resulting from geophysical exploration using resistivity geolelectric method with Wenner configuration. The result of this exploration were processed using Res2Dinv software to view soil layer data based on resistivity and points containe hot water aquifers. The resistivity values on the underground layer srtucture model is ≤ 10 Ohm.meter on each trajectory. The constituent layers of each track consist of hot water, clay, sand interlocking with clay, gravel sand and gravel.

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.

SEBARAN AIR TANAH MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI DIPOLE-DIPOLE Resma Silvia; Usman Malik
Komunikasi Fisika Indonesia Vol 18, No 1 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.1.18-21

This research has been worked in the Graha Mustamindo Permai 3 Housing area, Rimba Panjang Village, Tambang District. This research been thorough to calculate the value of measured rock resistivity in Graha Mustamindo Permai 3 Housing and analyze rock layer types through rock resistivity values at Sepakat street, Rimba Panjang, Riau. The method using in this research is geoelectric resistivity of the Dipole-dipole configuration, two lanes with the same length of 100 meters are used and spacing between electrodes is 7 meters. The data obtained were processed using Res2Dinv software version 3.54.44. The data result that obtained show two differences trajectories in Rimba Panjang Village has varying resistivity, namely in the first lane around 1.595 Ωm to 2,762 Ωm and in the second lane 1.594 Ωm to 5,879 Ωm. Groundwater potential in the first and second lanes is quite large and is thought to be in a free aquifer so that it is easy to drill.

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.

IDENTIFIKASI LITOLOGI BAWAH PERMUKAAN MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI DIPOLE-DIPOLE DI WISATA HAPANASAN DESA PAWAN KABUPATEN ROKAN HULU Dandy Putra; Usman Malik
Komunikasi Fisika Indonesia Vol 18, No 2 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.2.106-110

Salah satu sistem panas bumi yang terdapat di Riau adalah Desa Pawan, Kabupaten Rokan Hulu. Sistem panas bumi itu tersimpan dalam batuan yang terletak di bawah permukaan bumi, sehingga perlu diidentifikasi litologi bawah permukaannya. Tujuan riset ini adalah menganalisa litologi lapisan batuan yang ada di objek wisata Air Panas Pawan. Metode yang digunakan yaitu geolistrik Konfigurasi Dipole-Dipole. Hasil yang diperoleh pada lintasan II memiliki resistivitas berkisar antara (30,7 – 149) Ohm-meter yang diidentifikasi sebagai akumulasi air yang diapit lapisan lempung. Lapisan ini terletak pada kedalaman (0,7 – 8,71) meter. Lapisan kedua memiliki resistivitas berkisar antara (328 – 722) Ohm-meter yang berada pada kedalaman bervariasi, yaitu (0,6 – 10,8) meter yang diidentifikasi adanya pasir. Lapisan ketiga memiliki resistivitas berkisar antara (1.500 – 7.713) Ohm-meter yang berada pada kedalaman (0,7 – 15,7) meter yang diidentifikasi adanya batu pasir. Kesimpulan yang dapat diambil adalah bahwa metode geolistrik Dipole-Dipole telah berhasil diterapkan untuk mengidentifikasi litologi bawah permukaan di daerah prospek panas bumi.

Co-Authors Afrita Ariani Aldianti Rizki Musdalifah Hutagalung Antonius Surbakti Aprianturi Rega Asnawi Husin Awaludin Rakhmat Bayu Yolanda Riputra Cici Sang Putri Dandy Putra Erman Taer Erwin Erwin Fadli Abdillah Hijrah Septia Anisa Indra Gunawan Ismawan Ismawan Iyu Suknawati Juandi Juandi Krisman Krisman Krisman Sabar Lily Wandari Maria Sonya Nauli Nainggolan Mei Saroh Melki Leonardo merry handayani Mhd Hamdi Muammar Qadafi Muhammad Zul Ilmi Rangkuti Pandi Kurniawan Rahmondia Nanda Setiadi Resma Silvia Restina Restina Riad Syech Rigia Givanny Pritamara Rika Taslim Rizza Naflah Herlinda Salomo Salomo Salomo Salomo Sherly Mutiara Suryadi Simbolon Tahayati Ichsan Walfred Tambunan Yanuar Hamzah

Title

Found 29 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 29 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 29 Documents
Search