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INDONESIA
INDONESIAN JOURNAL OF APPLIED PHYSICS
Published by Universitas Sebelas Maret
ISSN : 20890133     EISSN : 24776416     DOI : -
Core Subject : Science,
Astronomy Energy Materials Science & Nanotechnology Physics
Indonesia Journal of Apllied Physics provides rapid publication of short reports and important research in all fields of physics. Indonesia Journal of Apllied Physics publishes articles that are of significance in their respective fields whilst also contributing to the disclipline of physics as a whole. Articles should be submitted to the Editorial Office of Indonesia Journal of Apllied Physics through this site. Further information on submission is also available at this site
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Articles 4 Documents
 1 
Search results for , issue "Vol 9, No 01 (2019): April" : 4 Documents clear
Identifikasi Keberadaan Lapisan Akuifer Tertekan (Confined Aquifer) Berdasarkan Data Geolistrik (Studi Kasus : Desa Sambirejo Kecamatan Plupuh Kabupaten Sragen) Darsono Darsono; Darmanto Darmanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 9, No 01 (2019): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v9i01.30122

Abstract

Air menempati suatu wadah rongga di dalam tanah yang disebut dengan akuifer. Salah satu akuifer yang masih jarang digunakan adalah akuifer tertekan. Akuifer ini terletak lebih dalam, sehingga keberadaan perlu dideteksi lebih dahulu. Untuk mendeteksi keberadaan akuifer menggunakan metode geolistrik resistivitas. Alat yang digunakan adalah resistivitimeter OYO Model 2119C McOHM-EL, dengan konfigurasi Schlumberger dengan bentangan AB/2 samapai 350 meter. Pengambilan data dilakukan di Kecamatan Plupuh Kabupaten Sragen sebanyak 5 titik sounding. Pengolahan dilakukan dengan menggunakan software IP2win.Hasilnya menunjukkan bahwa lapisan akuifer di 5 titik sounding berupa lapisan pasir lempungan, pasir dan lapisan pasir kerikilan. Lapisan akuifer tertekan terdeteksi di: TS1 pada kedalaman 39,9 meter- 110 meter dengan litologi pasir kerikilan, TS2 pada kedalaman 40,25 meter – 66,58 meter dan 80,24 -139,7 meter dengan litologi pasir, TS3 pada kedalaman 47,25 meter – 101 meter dengan litologi pasir lempungan,TS4 pada kedalaman 40,72 meter – 103 meter dengan litologi pasir lempungan dan TS5 pada kedalaman 31,41 meter – 97 meter dengan litologi pasir lempungan.
Seismic Wave Propagation Simulation in a Poro-elastic Medium Using Spectral Method Elements in MPI-GPU Cluster: Study Case of Anticline Reservoir Trap Sudarmaji Sudarmaji; Indra Rudianto; Muhammad Kautsar Rahmareza; Yosua Alfontius
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 9, No 01 (2019): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v9i01.24750

Abstract

Modeling 2D seismic wave propagation using spectral element method on MPI-GPU clusters has been implemented and can complete the problem of elastic-poro elastic medium model. Free surface boundary conditions and absorption layer will use the CPML method. Seismic wave propagation simulation in hybrid elastic-poroelastic medium has been carried out on hydrocarbon reservoir models with anticline type. In reservoir rocks that have a poro elastic medium, there will be a fast and slow P wave. While in non-reservoir rocks that have elastic medium, only P fast waves is observed. The computation time for an anticline type reservoir model with dimensions of 1 km x 1.5 km using MPI 4 nodes cluster with 48 CPU cores is 3 minutes 48 second.
Pengaruh Berat Beban pada Lengan terhadap Gaya Otot Bisep Sebagai Media Pembelajaran IPA Konsep Bioekanika Hanif Alifah Kurniawati; Heru Kuswanto; Febyarni Kimianti; Wahyu Pamungkas
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 9, No 01 (2019): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (722.023 KB) | DOI: 10.13057/ijap.v9i01.25544

Abstract

Manusia melakukan banyak kegiatan yang menggunakan konsep biomekanika. Biomekanika adalah ilmu yang menjelaskan tentang aspek mekanika dari gerakan tubuh manusia. Ilmu yang menggunakan hukum fisika dan mekanika untuk mendeskripsikan  gerakan pada tubuh dan memahami efek gaya dan momen yang terjadi. Gerak tubuh manusia yang memakai prinsip biomekanika salah satunya adalah kegiatan pada lengan di mana terdapat gaya otot bisep ketika seseorang mengangkat benda atau beban. Penelitian ini bertujuan untuk mengetahui pengaruh berat beban pada lengan terhadap gaya otot bisep pada seseorang ketika mengangkat sebuah benda bermassa. Penelitian ini termasuk penelitian eksperimen Pengukuran gaya otot bisep menggunakan sebuah alat kerangka tangan yang dibuat dari kayu dengan memberikan variasi beban yaitu 0,2 N; 0,4 N; 0,6N; 0,8 N and 1,0 N. Setiap beban yang diberikan di lengan, maka akan diketahui gaya otot bisep yang terukur dengan menggunakan neraca pegas. Data hasil penelitian dianalisis secara sederhana dan dimasukkan ke dalam grafik. Berdasarkan hasil analisis diketahui bahwa semakin besar berat beban yang diberikan pada lengan maka gaya otot bisep juga akan semakin besar.
Effects of Surface Diffuseness and Coupling Radius Parameters on The Fusion and Quasi-Elastic Barrier Distributions Viska Inda Variani; Ida Usman; Muhammad Zamrun Firihu
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 9, No 01 (2019): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (894.487 KB) | DOI: 10.13057/ijap.v9i01.30416

Abstract

We study the heavy-ion reaction at sub-barrier energies for 16O+144,154Smsystems using full order coupled-channels formalism. We especially investigate the effect of fusion and quasi- elastic barrier distributions on the surface diffuseness and the coupling radius parameters of the nuclear potential for these systems. We found that the structure of fusion and quasi-elastic barrier distributions is more sensitive to the surface diffuseness and coupling radius parameters for the reaction with spherical target, 16O+144Sm systemcompared to the reaction that involves the deformed target, i.e., 16O+154Sm system. In more detail, the results of coupled-channels calculations for the fusion and the quasi-elastic barrier distributions for deformed target are not sensitive to the choice of the coupling radius and surface diffuseness parameters. In mark contrast, the structure of the fusion and the quasi-elastic barrier distributions for spherical target are very sensitive to the coupling radius and surface diffuseness parameters. We found that the small surface diffuseness parameter smeared out the fusion barrier distributions and the larger coupling radius smoothed the high energy peak of the quasi-elastic barrier distributions. We also found that the larger coupling radius, , is required by the experimental quasi-elastic barrier distribution for the 16O+144Sm system whereas the experimental fusion barrier distribution compulsory the small value, i.e., .

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