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All Journal Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam JOURNAL ONLINE OF PHYSICS APTEK Jurnal Material dan Energi Indonesia

Usman Malik

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Author-ID : 2979851

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

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PREDIKSI VOLUME AKUIFER BEBAS DI KECAMATAN BUKIT RAYA DENGAN METODE BEDA HINGGA Muhammad Juandi; Muhammad syahputra syahputra; Usman Malik
JOURNAL ONLINE OF PHYSICS Vol. 3 No. 1 (2017): JOP (Journal Online of Physics) Vol 3 No 1
Publisher : Prodi Fisika FST UNJA

A research about prediction of unconfined aquifer in Distrcit Bukit Raya have been done by using finite difference method. The depth of unconfined aquifer data using contour grid District Bukit Raya in 2015 solved numerically by using computer program MATLAB application R2009a version. The aim of this research was to analyze the effect of population growth on the volume of unconfined aquifer in District Bukit Raya. The result of the research could be informed to District Bukit Raya as follows : the total volume of underground water in 2017 in the amount of 10.399.615,33 m3 and in 2021 in the amount of 10.931.060,63 m3. the volume of underground water that taken by residents in 2017 were in the amount of 5.038.007,328m3and in 2021 were in the amount of 5.334.525,03 m3. The inreasing of lowering the volume of underground water (residue), so that in 2017 The inreasing of loweringthe volume of underground wateras much as5.361.608 m3and in 2021 as much as 5.596.535,6 m3. It can be concluded that the volume of underground waterinfluenced by the changes of the dept of aquifer and the large of green open space

EFEK VARIASI MASSA DAN ANALISA EFISIENSI BIOMASSA LIMBAH KAYU AKASIA DALAM PENGOLAHAN OPAK SINGKONG MENGGUNAKANKOMPOR BIOMASSA Juandi Juandi; Ray Afriando; Usman Malik
JOURNAL ONLINE OF PHYSICS Vol. 3 No. 2 (2018): JOP (Journal Online of Physics) Vol 3 No 2
Publisher : Prodi Fisika FST UNJA

Has conducted research on “Variation Of Mass Effect and Analysis Of The Efficiency Biomass Accacia Timber Waste In Processing Cassavas Opak Using Biomass Stove” using the experimental method. The biomass stoves is using biomass energy from accacia timber waste as an energy source or fuel with a variety of mass 1200 grams, 1000 grams, and 800 grams. The observations were carried out for 60 minutes with intervals of 10 minutes each observation. The research results show that at mass 1000 grams obtained value temperature highest of 4630C. The average rate of heat energy is missing from the third variation mass 800 grams, 1000 grams, and 1200 grams receive is 514.439 Joule/s, and the average rate of energy heat elapsed of 29176.323 Joule/s with the water levels were lost during steaming of 6.046 %, and the average a mass of type the end of 60.287 kg/m3. The efficiency obtained with the values respectively of 99.542 %, 99.270 %, and 99.316 %.

SIFAT MAGNETIK DAN UKURAN PARTIKEL MAGNETIK SERTA KOMPOSISI MATERIAL PASIR BESI PANTAI KATA PARIAMAN SUMATERA BARAT DI SINTESA DENGAN IRON SAND SEPARATOR DAN BALL MILLING Salomo salomo; Erwin Erwin; usman malik; Sandra Utama Putra
JOURNAL ONLINE OF PHYSICS Vol. 3 No. 2 (2018): JOP (Journal Online of Physics) Vol 3 No 2
Publisher : Prodi Fisika FST UNJA

Research on influence of Ball Milling time on magnetic properties composition and particle size of iron sand has been studied by Iron Sand Separator. The sampel was collected Kata beach Pariaman West Sumatera. Magnetic properties was studied using a solenoid wound with 2000 turns, length of 10 cm, and diameter 3 cm. Composition of the sample was studied by X-Ray Fluorescence, while particle size of the sample was studied by Particle Size Analyzer. The results showed that the size particle is 99,14 μm, 96,59 μm, and 93,34μm after processing by Ball Milling of 3, 5, and 7 hours respectively. The composition of the sample after being processed by Ball Milling of 7 hours is 12,2% and 47,387% respectively. More over, mass suseptibility of the sample increased after being processed by Ball Milling from 873,62 x 10-8 m3/Kg to 14.576,52 x 10-8 m3/Kg. These values are interval of ilmenite mineral (46 x 10-8 – 80.000 x 10-8) m3/Kg.

PREDIKSI KEDALAMAN DAN ANALISA POTENSI AIR BAWAH TANAH: STUDI KASUS KECAMATAN SENAPELAN KOTA PEKANBARU Rahmi Saputri; Usman Malik; Juandi Juandi
JOURNAL ONLINE OF PHYSICS Vol. 4 No. 1 (2018): JOP (Journal Online of Physics) Vol 4 No 1
Publisher : Prodi Fisika FST UNJA

Penelitian tentang prediksi kedalaman dan analisa potensi air bawah tanah di Kecamatan Senapelan Kota Pekanbaru telah dilakukan dengan menggunakan metode beda hingga. Tujuan penelitian ini adalah untuk prediksi kedalaman dan menganalisa potensi air bawah tanah tahun 2018 sampai dengan tahun 2025 di Kecamatan Senapelan Kota Pekanbaru dengan menggunakan program komputer aplikasi MATLAB R2015a. Hasil pengolahan data dimasukkan ke dalam program komputer, sehingga dapat dibuat model garfik kontur dan grafik mesh yang menggambar pola sebaran kedalaman air bawah tanah berdasar model permukaan Kecamatan Senapelan Kota Pekanbaru. Air bawah tanah diprediksi pada kedalaman 16 meter sampai 32 meter untuk tahun 2018 sampai dengan tahun 2025. Hasil prediksi kedalaman air bawah tanah dipengaruhi oleh beberapa faktor yaitu Resepan (R), pengambilan air oleh penduduk (Ed), pengambilan air oleh industri (Ei), pengambilan air oleh fasilitas umum (Ef), pengambilan air oleh pelayanan jasa (Ep) dan pengambilan air oleh peternakan (Et).

PENGELOLAAN AIR BAWAH TANAH DENGAN INTEGRASI FAKTOR LINGKUNGAN: STUDI KASUS KECAMATAN SENAPELAN KOTA PEKANBARU Ruzi Andriani; Juandi Juandi; Usman Malik; Muhammad Hamdi
JOURNAL ONLINE OF PHYSICS Vol. 4 No. 1 (2018): JOP (Journal Online of Physics) Vol 4 No 1
Publisher : Prodi Fisika FST UNJA

Penelitian tentang sistem informasi dan pengelolaan air bawah tanah di Kecamatan Senapelan Kota Pekanbaru telah dilakukan dengan menggunakan Metode simulasi MATLAB. Data kedalaman air bawah tanah di ambil dari Kecamatan Senapelan Kota Pekanbaru. Tujuan penelitian ini adalah untuk menganalisa sistem informasi pengelolaan air bawah tanah dengan integrasi faktor lingkungan tahun 2017 dan 2018 di Kecamatan Senapelan Kota Pekanbaru dengan menggunakan program komputer aplikasi MATLAB GUI. Data yang didapatkan diolah menggunakan Microsoft Excel. Hasil pengelolaan data dimasukan kedalam program komputer menggunakan GUI MATLAB yang telah dibuat dan berhasil memvisualisasikan dalam bentuk grafik. Program tersebut terdiri dari program menu dan program utama dengan fitur display Grapihical User Interface (GUI). Grafik yang dihasilkan ditampilkan kedalam grafik 3-D. Hasil penelitian kedalaman air bawah tanah pada tahun 2017 dan 2018 dipengaruhi oleh beberapa faktor yaitu Resapan R = 908.249 m3/tahun, pengambilan air oleh penduduk Ed = 7.107.847,2 m3/tahun, pengambilan air oleh industri Ei = 2.390,209315 m3/tahun, pengambilan air oleh fasilitas umum Ef = 215.719,6626 m3/tahun, pengambilan air oleh perdagangan Ep = 610.705.759,8 m3/tahun dan pengambilan air oleh perternakan Et= 41.880,05655 m3/tahun. Nilai pengambilan air bawah tanah disebabkan oleh faktor lingkungan dengan kontribusi terkecil dari faktor pengambilan air oleh pertanian/perkebunan (Et), kontribusi terbesar dari faktor pengambilan air oleh perdagangan (Ep), selebihnya karena faktor alam. Penelitian pengelolaan pengambilan air bawah tanah tahun 2017 dan 2018 menjelaskan adanya pengaruh faktor-faktor lingkungan yang terintegrasi terhadap perubahan kedalaman air bawah tanah di Kecamatan Senapelan Kota Pekanbaru.

PEMETAAN SUSEPTIBILITAS MAGNETIK ENDAPAN TANAH SUNGAI SAIL PEKANBARU Dati Oktavia Oktavia; Salomo; Usman Malik
JOURNAL ONLINE OF PHYSICS Vol. 4 No. 2 (2019): JOP (Journal Online of Physics) Vol 4 No 2
Publisher : Prodi Fisika FST UNJA

Mapping the value of the sedimentary magnetic susceptibility along the Sail Pekanbaru river using Surfer 11 Software has been carried out. The sample consisted of 70 location points consisting of 35 right bank edges and 35 left bank edges. The sampling method uses the grid method. The results of the magnetic level calculation show a range of values from 0,03% to 0,19%.The results of magnetic degree value mapping indicate that the magnetic degree obtained is getting higher from upstream to downstream. The results showed that the suseptibility magnetic value of sediment in the Sail Pekanbaru river ranged from 0,82 × 10-8 m3 / kg to 3,44 × 10-8 m3 / kg, based on this value it can be estimated that the main magnetic particles of the sample are in the Sail Pekanbaru river is ilmenit. The results of mapping the magnetic susceptibility values and mass susceptibility values of the samples indicate that the magnetic susceptibility in the Sail Pekanbaru river from upstream to downstream is less.

PENGUKURAN RESISTIVITAS LAPISAN TANAH DI KELURAHAN TUAH KARYA MENGGUNAKAN KONFIGURASI SCHLUMBERGER Hafiza Mudral; Usman Malik
JOURNAL ONLINE OF PHYSICS Vol. 4 No. 2 (2019): JOP (Journal Online of Physics) Vol 4 No 2
Publisher : Prodi Fisika FST UNJA

Geoelectric is one of the geophysical exploration methods that uses the earth's electrical properties to study subsurface conditions, the geoelectric method has several rules, one of which is Schlumberger's rule. This study aims to determine the composition of the soil layer, so that it can be known that the cause of difficult surface water seeps into the ground based on resistivity values at the HSB Indah Residence. Schlumberger configuration research uses a 300 meter stretch. Resistivity of soil constituent lithology in the study area was generated by processing geoelectric data using one-dimensional progress software. The cross section of the rock structure consists of five layers, namely the first layer is a clay layer with a resistivity value of 13.49 Ωm, the second layer is silt layer with a resistance value of 42.88 Ωm, the third layer is a clay layer with a value of 1.87 Ωm, the fourth layer is a layer of sandstone with a resistivity value of 59.17 Ωm and the fifth layer is a layer of gravel sand with a resistivity value of 443.40 Ωm. This shows that the cause of surface water is always flooded around the housing area, the soil layer is dominated by clay and silt material with a depth of more than 25 meters.

ANALISIS KORELASI KEMUNCULANSPREAD F DANSINTILASI IONOSFER DI WILAYAH BARATINDONESIA MENGGUNAKAN DATAIONOSFER AGAM KOTOTABANGSUMATERA BARAT Putri Andini; Usman Malik; Asnawi Husin
JOURNAL ONLINE OF PHYSICS Vol. 5 No. 2 (2020): JOP (Journal Online of Physics) Vol 5 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v5i2.9550

This reseach has been done to know the correlation between spread F appearance and scintillation ionosphere on west region Indonesia. The method has been used is data interpretation using computational way, then all of data is processed using matlab software. The occurance of spread F was minimum in 2008 with it value respectively around 45%. In 2011 the spread F was beginning to increase with it value respectively around 70%. The occurance of ionospheric scintilation was minimum in 2010 with it value respectively around 13%. These occurances were due to a minimum phase of solar activity. In 2013 the scintilation was beginning to increase with it value respectively around 75% in which the occurance was selected for S4 ≥ 0,6. The correlation level between spread F and scintilation is medium, because the value of R aquals 0,4 this case is be affected by solar activity. The value of R is 0 (no correlation) at weak solar activity and 0,6 at high solar activity.

Co-Authors Aji Susoso Amalia Aisha Noer Asnawi Husin Awitdrus Awitdrus, Awitdrus Dahlia Segeryanti Dati Oktavia Oktavia Defrianto Defrianto Erwin ' Erwin Erwin Fauzan ' Hafiza Mudral Hafnida Hasni Harahap Handri Anjoko Imam Wijayasastra Sinaga Juandi Juandi Juandi M ' Juandi M. ' Kisna Pertiwi Krisman ' Lazuardi Lazuardi Lazuardi Umar M Juandi M. Hamdi Mhd. Hamdi Mimwindayani Mimwindayani Muhamad Hamdi Muhammad Edisar Muhammad Hamdi Muhammad Juandi Muhammad syahputra syahputra Muhd Fachrewa Almarsya Muksin ' Nia Audina Putra Ramadani Putri Andini Rahmi Dewi Rahmi Saputri Ray Afriando Riad Syech Ricko Mahindra Riska Fitriani Rutmayanti Pandiangan Ruzi Andriani Saidatun khofifah Salomo Salomo Salomo Sandra Utama Putra Sugianto ' Suhardi ' Syahrol ' Taufik Arianto Weldo Sihotang Widia Rahim Widya Nora Nasution Yanuar Hamzah

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