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All Journal Jurnal Reka Lingkungan Komunikasi Fisika Indonesia JOURNAL ONLINE OF PHYSICS Unri Conference Series: Community Engagement
Usman Malik
Universitas Riau
Humanities Earth & Planetary Sciences Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Physics

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ANALISA KEDALAMAN AIR PANAS MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DI OBJEK WISATA AIR PANAS PAWAN Cici Sang Putri; Usman Malik
Komunikasi Fisika Indonesia Vol 17, No 2 (2020)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.17.2.87-91

Abstract

Hot water depth analysis have been carried out using the Schlumberger Configuration geoelectric method. This research investigatis subsurface conditions by analyzing the resistivity value. The study was conducted at the Pawan Hot Spring tourisme object, Rokan Hulu, Riau using the Schlumberger rule which is brought closer to 2 track points with a length of 90 meters each. Measurment data were processed using Progress Software and the resistivity values obtained at Line I 100,83 – 63,54 Ohm.m with depths of 0,00 – 46 m and at Line II 146,73 – 239,71 Ohm.m with depths of 0,00 – 33 m. The interpretation result of the two tracks obtained that the hot water flow in Line I is in the sand layer with resistivity values 95,28 Ohm.m and 63,54 Ohm.m at depths of 3,77 – 46 m. Line II is found in the sandy clay layer with a resistivity value of 1,05 Ohm.m at depth of 3,56 – 3,66 m.
ANALISIS EFEK GERHANA MATAHARI TOTAL 9 MARET 2016 TERHADAP KANDUNGAN TOTAL ELEKTRON IONOSFER Afrita Ariani; Usman Malik; Asnawi Husin
Komunikasi Fisika Indonesia Vol 17, No 1 (2020)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.508 KB) | DOI: 10.31258/jkfi.17.1.50-54

Abstract

Total elektron contant in ionosphere is affected by several fastors, local time, solar aktivities, geomagnetic disturbance, geographical latitude and longitude. This researh aims to observase level variation of total electron contant during solar eclipse over Indonesia on 9 March 2016. We analyzed GPS data from two GPS stations in different locations with different sun observation geographical latitude and longitude, the locations were Sulawesi station (CAMP) and Maluku station (CAMB). The method used in this research, was data interpretation method  computationally, the whole data analyzed using matlab software R2008a. The values of daily TEC range from 20 TECU till 30 TECU. Although the value of TEC when solar total eclipse range from 10n TECU untill 20 TECU. The percentage of decreasing value of TEC when total solar eclipse than the daily value of TEC. Decreasing of TEC value between 20%-40%.
PENGARUH KONSENTRASI KOH TERHADAP SIFAT FISIS DAN ELEKTROKIMIA ELEKTRODA KARBON DARI LIMBAH KULIT DURIAN SEBAGAI SEL SUPERKAPASITOR Pandi Kurniawan; Erman Taer; Usman Malik; Rika Taslim
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (96.928 KB) | DOI: 10.31258/jkfi.15.1.62-66

Abstract

Activated carbon electrode have been prepare from durian shell focused in KOH concentration variations at chemical activation process. The preparation of carbon electrodes begins with pre-carbonization process, grinding using Hard Grinder and ball milling, after that followed by sieving process with particle size at range of 39 - 52 μm. Chemical activation was performed by using KOH activator agent with concentration variation of 0.5 M, 0.6 M, 0.7 M. Carbon powder are formed to pellet form using Hydraulic Press at a 8 ton compression pressure. The carbonization process is carried out a temperature of 600°C in the N2 gas atmosphere at a temperature of 900°C for 2 hours. The electrodes characterization are performed to determine the physical and electrochemical properties.The physical properties such as density, degree of cristanility, surface morfology was analyzed by calculate the electrode dimension such as, mass, thickness and diameter, X-ray diffraction analysis and Scanning Electron Microscopy Analysis. the electrochemical properties was studied the cell capacitance and the electrode capacitance specific using Cyclic Voltammetry method. the electrode density were decrease with the increasing the KOH concentration. The smallest density has been found at electrode using a KOH concentration of 0.7 M. The XRD test showed a carbon was amorfphuse structure identified by existing two broadening peaks at an angle of 2θ, ie 24.967°, 44.315° and 81.332° which describes the  (002), (100) and (112) planes. Furthermore, samples were analyzed by Scanning Electron Microscopy and X-ray diffraction. The  cyclic voltammetry result, obtained the highest specific capacitance of 89.05 F/g and cell capacitance 24,04 F was found at electrode with a KOH  concentration of 0.7 M. From this research it can be concluded that the KOH optimum concentration was 0.7 M.
APLIKASI METODE GEOLISTRIK DIPOLE-DIPOLE DAN GEOKIMIA DALAM PENENTUAN REMBESAN LINDI PADA LAPISAN TANAH DI SEKITAR TPA MUARA FAJAR PEKANBARU Aldianti Rizki Musdalifah Hutagalung; 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.18.2.159-166

Abstract

Lindi merupakan hasil degradasi sampah pada lokasi  Tempat Pembuangan Akhir (TPA) dapat meresap ke dalam tanah hingga mencemari sumber air tanah. Telah dilakukan penelitian pengukuran geolistrik resistivitas yang bertujuan untuk mengidentifikasi adanya rembesan serta penyebaran lindi di sekitar TPA. Penelitian dilaksanakan di sekitar TPA Muara Fajar Pekanbaru dengan menggunakan konfigurasi Dipole-Dipole pada dua lintasan dengan panjang lintasan 133 meter dan 100 meter. Data pengukuran selanjutnya diinversi menggunakan software Res2Dinv hingga menghasilkan profil resistivitas 2D. Hasil analisis menunjukkan pada lintasan 1 terdapat sebaran lindi di kedalaman 8,86 meter, sedangkan pada lintasan 2 tidak terdapat sebaran lindi. Selain itu, hasil uji sampel lindi menggunakan metode geokimia menunjukkan bahwa lindi di TPA Muara Fajar Pekanbaru tidak memenuhi standar baku mutu lindi. Hasil uji sampel kualitas air sumur warga di sekitar TPA masih sesuai dengan kualitas air bersih, dikarenakan rembesan lindi belum sampai ke pemukiman warga.
INTERPRETASI TRANSMISIVITAS UNTUK ANALISA POTENSI AIR BAWAH TANAH BERDASARKAN DRAWDOWN AIR SUMUR CINCIN MENGGUNAKAN METODE PUMPING TEST DI KECAMATAN MARPOYAN DAMAI KOTA PEKANBARU Rigia Givanny Pritamara; Juandi M; Usman Malik
Komunikasi Fisika Indonesia Vol 16, No 1 (2019)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.608 KB) | DOI: 10.31258/jkfi.16.1.35-39

Abstract

The most consumption water is groundwater taken through excavated wells or ring wells. An aquifer test can be applied in  pump test in order to find transmissivity of drawdown ring wells.The tested ring wells were located at 25 different locations in the Marpoyan Damai District. In the pumping test on the ring wells data was obtained namely drawdown test data s, times t, rate of discharge Q, and then create a graph of s/Q vs Q. The straight line that cut the s/Q axis the A value with the C gradient and the determinant coefficient d2. The values obtained were then inserted into the transmisivity formula of the Cooper-Jacob method. The A values for t = 3 minutes and t = 7 minutes were selected because their results in C values are close to each other. The C values of t = 3 minutes and t = 7 minutes are 0.1671 and 0.1672 respectively. Transmissivity value obtained is 134.5 m2/day. The value shows a potentially useful groundwater aquifer for the Marpoyan Damai district because the transmissivity value exceeded 50 m2 / day.
INTERPRETASI KONDISIAIR BAWAH TANAH STUDI KASUS DI KECAMATAN TENAYAN RAYA KOTA PEKANBARU DENGAN MENGGUNAKAN METODE PUMPING TEST Awaludin Rakhmat; Juandi Muhammad; Usman Malik
Komunikasi Fisika Indonesia Vol 16, No 1 (2019)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.981 KB) | DOI: 10.31258/jkfi.16.1.25-28

Abstract

The purpose of the research on the potential of underground water in ring wells in the District of Tenayan Raya Pekanbaru City using the experimental method of pumping test is to determine the potential of underground water, and determine the value of transmissivity so that it can be known the feasibility of well water for surrounding communities. Data was taken on 30 ring wells in Tenayan Raya District, Pekanbaru City. The results obtained are wells that have the lowest potential for underground water in Kadiran Street, Kulim Village with a value of drawdown is 2.1610 m. Wherea the highest potential as good underground water is in the well at Gunung Kidul Street, Tangkerang Timur Village with value of drawdown is 2.0407 m. This ring well has the potential of underground water which is likely to provide water for a long time. The transmissivity obtained from the 30 ring wells is 10.7684 m2 / day. This value shows good groundwater quality and has the potential to meet the needs of residential areas.
ANALISA TINGKAT PENCEMARAN AIR BAWAH TANAH DENGAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DI KECAMATAN TAMPAN KOTA PEKANBARU Juandi M; Usman Malik; Melki Leonardo
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (98.44 KB) | DOI: 10.31258/jkfi.15.1.23-27

Abstract

The research analyzing ground water contamination based on Geo-electrical methods near 2 point, that is in Cipta Karya street (without waste pile) and Srikandi street (with waste pile), Kecamatan Tampan Riau. Data was processed using Software Progress, with the results of processing in the form of depth, thickness and number of layers and the resistivity value. Has been done the results obtained showed that the resistivity value on Cipta Karya road without garbage pile was 57.10-4955.00 Ohm.m at depth 0,00-346,00 Meter and on Srikandi street with garbage pile was 68.90-4008.00 Ohm.m at depth 0,00-367,00 Meter. Geo-electrical data measurements in Cipta Karya and Srikandi there are 5 layers of soil, that is cover layer, clay loam layer, alluvium layer, sand layer and bedrock layer. Based on the above resistivity values and depth, all points considered un polluted by leachet because the resistivity value is far above 10 Ohm.m (fresh water). Resistivity values indicate that the leachet does not seep into the soil and spread to swamps which are right next to the garbage pile(Srikandi road).
SURVEI SUMBER AIR PANAS DENGAN METODE GEOLISTRIK KONFIGURASI WENNER (STUDI KASUS: WISATA AIR PANAS PAWAN, PASIRPANGARAIAN) Bayu Yolanda Riputra; 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.18.2.146-150

Abstract

Salah satu sistem panas bumi yang terdapat di Riau adalah di Desa Pawan, Kabupaten Rokan Hulu. Sistem panas bumi ini tersimpan dalam batuan dibawah permukaan bumi, sehingga perlu melakukan survei sumber air panas. Tujuan penelitian ini adalah untuk menganalisa nilai resistivitas bawah permukaan dan mengidentifikasi lapisan batuan dibawah permukaan yang ada di objek wisata air Panas Pawan. Metode yang digunakan adalah geolistrik konfigurasi Wenner. Hasil yang diperoleh pada lintasan I memiliki nilai resisitivitas berkisar antara 9,15 – 10 Ohm-meter diidentifikasi sebagai air panas. Air panas ini terletak pada kedalaman 0,75 – 2,25 meter. Lapisan kedua memiliki nilai resistivitas berkisar antara 10 – 98,2 Ohm-meter yang berada pada kedalaman 3,82 meter yang diidentifikasi adanya lempung. Lapisan ketiga memiliki nilai resisitivitas berkisar antara 100 – 1.054 Ohm-meter yang berada pada kedalaman bervariasi, yaitu 5,5 – 7,46 meter yang diidentifikasi adanya batu pasir. Kesimpulan dapat diambil adalah bahwa metode geolistrik Wenner telah berhasil diterapkan untuk mengidentifikasi lapisan batuan didaerah prospek panas bumi.
Pengaruh Konsentrasi NaCl terhadap Parameter Elastik Pasir Tersaturasi Muammar Qadafi; Usman Malik
Jurnal Reka Lingkungan Vol 10, No 1 (2022)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v10i1.1-10

Abstract

AbstrakTelah dilakukan penelitian mengenai pengaruh konsentrasi larutan natrium klorinda (NaCl) yang disaturasikan pada sampel (core) pasir terhadap parameter elastik. Core dibuat dengan diameter 7,5 cm dan panjang 10 cm. Core dicetak dengan tekanan sebesar 5,8×104 N/m2. Core yang telah dicetak disaturasi dengan larutan NaCl yang divariasikan kosentrasinya dari 0 ppm hingga 360000 ppm (titik jenuh NaCl) selanjutnya dirambatkan gelombang seismik/elastik menggunakan Sonic Wave Analyzer (SOWAN), dari pengukuran ini akan diperoleh waktu tempuh gelombang (delay) pada sampel. Berdasarkan waktu tempuh, kecepatan gelombang primer dan sekunder pada Core diketahui. Hasil yang diperoleh berupa parameter elastisik dari Core seperti modulus Young, Modulus Bulk, Modulus Geser dan Konstanta Lame. Modulus Young Core berkisar antara 7,8×107Pa-1,8×109Pa, modulus Bulk sebesar 1,8×107Pa-8,9×108Pa, modulus geser antara 5,1×107Pa-7,6×108Pa dan Konstanta Lame berkisar antara 1,8×108Pa-3,4×109Pa. AbstractResearch has been carried out on the effect of saturated sodium chloride (NaCl) solution concentration in sand samples (cores) on elastic parameters. This research was conducted to determine the differences in the elastic core parameters according to the concentration of NaCl that saturates them. The cores are made with a diameter of 7.5 cm and a length of 10 cm. The cores are molded at a pressure of 5,8×104 N/m2. The cores that have been printed are saturated with NaCl solution with varying concentrations from 0 ppm to 360000 ppm (saturation point of NaCl) then propagated seismic/elastic waves using a Sonic Wave Analyzer (SOWAN), from this measurement the wave travel time (delay) will be obtained in the sample. Based on the travel time, the primary and secondary wave velocities at the Core are known. The core elastic parameters was obtained such as Young's modulus, Bulk modulus, Shear modulus and Lame's constant. Young Core modulus ranges from 7,8×107Pa-1,8×109Pa, Bulk modulus of 1,8×107Pa-8,9×108Pa, shear modulus between 5,1×107Pa-7,6×108Pa and Lame Constant ranges between 1,8×108Pa-3,4×109Pa.
ANALISIS KONDUKSI TERMAL JARINGAN SAPI DALAM INTERVAL WAKTU PENYERAPAN RADIASI TERAHERTZ DARI MILIDETIK SAMPAI PIKODETIK MENGGUNAKAN KOMPUTASI BIOFISIKA Usman Malik; merry handayani; Walfred Tambunan; Mhd Hamdi
JOURNAL ONLINE OF PHYSICS Vol. 3 No. 2 (2018): JOP (Journal Online of Physics) Vol 3 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.704 KB) | DOI: 10.22437/jop.v3i2.5366

Abstract

Penelitian ini mensimulasikan persamaan diferensial parsial konduksi panas 1-D untuk memprediksi model distribusi temperature jaringan biologis sapi seperti kulit, lemak, tumor dan otot selama penyerapan radiasi Terahertz sebagai fungsi posisi pada ke dalaman dan sebagai fungsi waktu dari milidetik sampai pikodetik. Pemodelan pola-pola temperature jaringan dari penyerapan radiasi Terahertzdikaji secara teoritis dengan metode komputasi biofisika menggunakan software Wolfam Mathematica 9. Penggunaan parameter-parameter fisis konduksi panas pada ke dalaman jaringan biologis sapi dari 0,1 mm sampai 0,3 mm, dan daya penyerapan radiasi Terahertz dari 2,5 mW sampai 5,5 mW dengan rentang frekuensi dari 0,1 THz sampai1THz. Hasil radiasi ini mengindikasikan penyerapan radiasi Terahertz dengan variasi daya yang memiliki karakteristik tersendiri dalam waktu milidetik sampai pikodetik. Daya penyerapan radiasi Terahertz yang besar dan waktu yang besar akan menghasilkan temperatur yang tinggi pada masing-masingjaringan bilogis sapi. Temperatur sebagai fungsi ke dalaman dipengaruhi oleh kandungan air di dalam jaringan biologis sapi, kandungan air penyusun jaringan yang kental pada waktu yang besar akan menghasilkan temperatur yang kecil. Perbandingan diantara pemodelan dan eksperimen menunjukkan bahwa prediksi temperatur transfer panas radiasi Terahertz cukup akurat dengan ketidakpastian kesalahan penyebaran untuk parameter-parameter yang diturunkan sebesar 0,8 %.
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