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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 267 Documents
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Measurement of Attenuation Coefficients of Near Surface Material Using SASW Method Suharsono S
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1178

Abstract

The spectral analysis of surface waves (SASW) is an in situ non-destructive method. It has been developed and used for many years in the fields of geotechnical engineering and site characterization. It is typically used in evaluation of elastic moduli and layer thickness of soils, rocks and pavements.In this study the SASW was used to measure an attenuation coefficient (α) of near surface material at 15 development sites with different material e.i. soils, granite and methamorphics rock.. The attenuation coefficient which is the exponential decay constant of the amplitude of surface wavepropagation was approximated by Bornitz equation. The amplitude of vertical ground surface vibration generated by impact tests on the ground surface was measured at various radial distances.A good empirical correlation between the measured attenuation coefficients and the corresponding shear modulus and SPT or RQD data were established. These results suggest that the attenuation coefficient could be used as an alternative parameter for characterization of near surface material. Based on this method, the subsurface material at sites the study can be classified into two groups.The first group represented a low stiffness material with attenuation values of greater than 0.00516 s/m and the second group was a high stiffness material with attenuation values of less than 0.00150 s/m.However, this method of evaluation was still in development stage and needs to be substantiated with more results of measurements.
Penerapan Model Pembelajaran Latihan Inkuiri untuk Meningkatkan Keaktifan Lisan dan Hasil Belajar dalam Pembelajaran Fisika Pada Siswa Kelas VII SMPN 2 Pandak Bantul Widodo W; Dwi Nursati
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1250

Abstract

Based on the observations in SMP Negeri 2 Pandak, it was found that the activity and spirit of students in learning activities were low. The student oral was low and the quality of student learning was under the minimal completeness criteria. The aims of this research were to improve students learning outcomes of cognitive aspects, affective aspects of students andpsychomotor aspects of students after attending a t inquiry practice learning model. Design research is a classroom action research (CAR), which consists of 3 cycles. Subjects in this study are students of class VII-D SMP Negeri 2 Pandak, Bantul. The research instrument that was used consisted of the lesson plan, student worksheets, observation sheet to observe the implementation of inquiry practice learning model, students orally activities, affective aspectsof students, and psychomotor aspects of the student, while the tests was used to measured cognitive aspects of students. The results showed that there were an increase in oral activity ofstudents, learning outcomes of cognitive aspects, affective aspects, and psychomotor aspects of students.
Dinamika Pertukaran Partikel Pada Interaksi Nukleon-Nukleon Dalam Potensial Lokal R Yosi Aprian Sari; Supardi S; Agung BSU; Arief Hermanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v2i02.1282

Abstract

The interaction of two nucleons in the form of protons and neutrons as a bound system in the local potential, known as the deuteron, has been investigated. Two-nucleon interaction potential field through the core will produce a nuclear force where the force between nucleons is generated by the exchange of mesons. One of the members of the group of meson particles is pion. Pion can be chargedπ + ,π -or neutral,π 0. Interaction potential form of the simplest is the exchange of one pion potential (OPEP), V OPEP , which has a radially independent of Yukawa potential. In this study, the first step taken is to perform discretization of the OPEP potential expression coupled with the equation of the boundary conditions due to the influence of interaction distances. The next step is to implement a programming technique to obtain the value associated with the potential influence of OPEP in the deuteron, the magnitudes of the static deuteron, such as a pion distance exchange, and mass estimates pion involved in this interaction.
Simulasi Numerik Reaksi Fusi Nuklir dengan menggunakan Metode Wong Muhammad Zamrun Firihu; Viska Inda Variani; J Justina
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i01.1800

Abstract

The numerical simulation for calculating the cross section of fusion reaction is done by using Wong formula. We especially calculated the cross section for the fusion reaction of light systems, i.e. 12C+12C, 16O+12C and 16O+16O reactions. We compared the obtained cross section with experimental data. In order to check the accuracy of the calculations, the chi-square analisys is then permormed. We found that the simulation results of the fusion cross section obtained using Wong Formula well explain the experimetal data of the fusion cross section for the 12C+12C, 16O+12C and 16O+16O reactions. This finding indicates that the Wong formula can be used for studing the fusion reaction of light systems.
STRUCTURE MODELLING OF SUBSURFACE BY USING KIRCHHOFF MIGRATION METHOD AND FINITE DIFFERENCE ANISOTROPY METHOD Husni Cahyadi Kurniawan; Adi Susilo; Teguh Suroso
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 02 (2016): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i02.1422

Abstract

The image of subsurface with a migration method keeps on developing to get an image result which the closest in real condition. The conditions in subsurface are very complex and variables it couses the process of wave  propagation which can not be judged as the same in every layers. so it is needed an anisotropy pharameter analysiz (η) in seismic data migration process. The research will compare two kinds of migrations those are Kirchhoff migration and finite difference anisotropy. It is done because not all datas are processed by anisotropy, even with isotropi it will get good result. The result of kirchoff migration has not so good quality (low resolution) on the first layer reflector.but on the second and third layer reflector have good result (high resolution). I estimate that in the first layer reflector there is anistropi influence, because the ratio effect between far offset and the depth is hight. The analysis result get η ansotropi pharameter result as 0,25 and put into migration process. On the second migration process is finite difference anisotropy appears on the first layer reflector and shows high resolution and suitable with the real layer model.
Karakteristik Sensor Kapasitif Pelat Sejajar Dalam Aplikasinya Sebagai Instrumen Pengukur Curah Hujan Berbasis Arduino Uno Bowo Eko Cahyono; Supriyadi Supriyadi; Muhammad Ainur Rofiq
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 2 (2017): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i2.14248

Abstract

Penelitian ini bertujuan untuk mempelajari karakteristik dari kapasitor pelat sejajar sebagai sensor dalam alat ukur curah hujan berbasis Arduino dengan tampilan LCD. Alat ini mampu membaca dan menampilan tegangan keluaran, nilai kapasitansi, konstanta dielektrik dan tinggi level curah hujan akibat adanya perubahan komposisi bahan dielektrik di antara pelat kapasitor. Sistem yang didesain telah diuji dalam 3 tahapan yaitu, uji akurasi pembacaan nilai kapasitansi, nilai ketinggian air, dan pengujian di lapangan. Nilai-nilai kapasitansi sensor yang ditampilkan dalam LCD dibandingkan dengan nilai kapasitansi sensor yang diukur dengan menggunkan kapasitansi meter CM-3300A. Dalam pengujian ini didapatkan hasil bahwa nilai-nilai kapasitansi yang diukur dengan dua etode yang berbeda tersebut saling berdekatan. Selisih tertinggi adalah 20,97pF pada ketinggian 15cm. Tinggi level air yang terbaca dibandingkan dengan pembacaan menggunakan penggaris dan hasilnya menunjukkan bahwa selisih terkecil yaitu 0,19 mm dan selisih terbesar 4,93 mm. Selanjutnya berdasarkan pengujian langsung di lapangan didapatkan selisih yang tidak terlalu jauh, dengan rata-rata selisih yang diperoleh kurang dari 5 mm. Secara umum, sistem alat ukur curah hujan telah menunjukkan kinerja yang bagus  saat dilakukan pengujian dan diaplikasikan pada kondisi hujan secara langsung di lapangan. Hasil tersebut telah menunjukkan bahwa sistem alat ukur curh hujan telah sesuai dengan apa yang diharapkan.
Identification of subsurface fault using schlumberger configuration geoelectricity method. Case study in Opak River Yogyakarta Ismi Lutfinur; Khumaedi K; Hadi Susanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 02 (2015): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v5i02.278

Abstract

The Opak river is formed by fault. The earthquake in Yogyakarta on May 27th, 2006 had activated the Opak’s fault and caused secondary fault. The fault had made destruction of the infrastructure. This research aimed to determine the description of subsurface structure and to identify the location of the underground fault. The Schlumberger configuration of geoelectrical method was used for identifying the fault in the research area. The data collected in three lines of each which the length is 75 meters. The datas were processed by Res2dinv and Surfer 10.0. Based on the result of the process, the resistivity value are 5-1077 Ωm and the discontinue plane of the contour profile resistivity at depth function. The discontinuities of resistivity value can be interpreted the fault plane. The position of the fault in line A is 38 m, while on the line B and C, the fault locations are located at 33 m from the start point of the measurement. The faults in lines A, B, and C are straight with the strike N 113° E.
Identification of Sandstone Reservoir Saturated by Oil Using Low Frequency Analysis with base on CWT and AVO Analysis Sudarmaji S; Budi Eka Nurcahya
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1168

Abstract

Identification of sandstone resevoir saturated by oil has been conducted by mean low frequency and amplitude versus offset (AVO) analysis. Low Frequency analysis was has been conducted among 3D and 2D seismic data of PSTM gather using continuose wavelet transform (CWT) around 15hz. Low frequency analysis was done by calculating attribute gradient time frequency of instantaneous amplitude using continuous wavelet transform (CWT) around 15hz for detecting the existing diffusive wave from reflection seismic. Diffusive wave is a wave that appears due to fluid movement in porous rock, especially fluid of hydrocarbon with certain viscosity and permeability. While amplitude versus offset (AVO) analysis was done for detecting the impedance character of sandstone reservoir that related to porous rock. Amplitude versus offset (AVO) analysis was done by calculating gradient*intercept and observing the curve of wave reflectivity as a function of offset. The positive value of gradient*intercept and curve of reflectivity as a function of offset could be identified as AVOclass III and correlated to sandstone reservoir with low impedance and good porosity.
Identifikasi Sumber Air Tanah dalam Berdasarkan Analisis Data Resistivitas di Daerah Bandara Adi Soemarmo, Solo, Jawa Tengah Caga Setia; Darsono D; Cari C
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1240

Abstract

The research was around in the Adi Soemarmo Airport area, Solo, Central Java. The growing development and the increased need for water to be basic the importance of this research. The purpose of this research to sources of ground water and state of rocks lithology. This Research using geoelectric method Schlumberger configuration using tools resistivitiy McOHM OYO Model 2119C-EL. The measurements were made much as 6 point sounding, electrode AB/2stretch scattered around the Adi Soemarmo Airport with varying penetration depths ranging from 1.5 meters up to 400 meters with stretch of the electrode reaches 800 meters. Furthermore, the value of resistivity in the field measurements made longitudinal section and water content analysis approached using IP2WIN interpretation software. the results of the study showed that at the point of sounding 2, 1, and 3 at depths greater than 130 meters areallegedly identified the source of ground water and the at point of sounding 7, 4, and 5 over 100 meters.
Analisa Receiver Function Teleseismic untuk Mendeteksi Moho pada Stasiun Bkb Data Meramex Rian Amukti; Wiwit Suryanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1272

Abstract

It has been done a research to determine internal earth using receiver function teleseismic analysis method. This method have been done by using MERAMEX (MErapi Amphibious Experiment) data from broadband seismometer BKB. Event of teleseismic is chosen from Honshu Japan with radius 30o and magnitude 7.2. This research begun by analysing radial and vertical characteristic of teleseismic eventand using bandpass filter with range 0.003 Hz – 0.5 Hz. Then Iteractive Deconvolution is used to get velocity model. The result of this model shows crustal model that has 4 Km thick upper crust, a 26 Km thick lower crust and 10 Km thick Moho transition zone, with velocity increasing gradually.

Page 9 of 27 | Total Record : 267

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