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INDONESIA
Indonesian Physical Review
Published by Universitas Mataram
ISSN : 26151278     EISSN : 26147904     DOI : -
Core Subject : Science, Education,
Education Physics
Indonesian Physical Review is a peer review journal which is managed and published by Physics Departement, Faculty of Mathematics and Natural Sciences, Universitas Mataram. This journal is published periodically three times a year, in January, May and September. IPR is Open Accsess for all readers and includes research developments in physics both experimentally and analytically. Focus and scope include Theoritical Physics, Computation, Material sciences, Instrumentation, Biophysics, Geophysics, and Optics.
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Articles 221 Documents
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APPLICATION OF THE GEOELECTRIC METHOD TO IDENTIFY SUBSCRIPTION FAULT IN SAMBELIA DISTRICT DUE TO THE 2018 EARTHQUAKE Muliana, Winda; Hiden, Hiden; Syamsuddin, Syamsuddin
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.213

Abstract

Earthquake activity triggers fault activity such as what happened on Lombok Island. Therefore, it is necessary to carry out research related to the existence of faults by identifying the type of fault, so that the risk of danger can be overcome before an earthquake occurs, especially in Sambelia District, East Lombok Regency. The purpose of this research is to find out whether there is a fault in the research area caused by the 2018 earthquake and to analyze its geometry in Sambelia District, East Lombok Regency. Data acquisition using the Geoelectric resistivity Wenner configuration method . The results of the research on 12 tracks with a length of 230 meters each track, on each track there are 3 rock layers in 2D cross section. Based on the inversion results, of the twelve main rock types that dominate include clay, sandstone, and breccia with a depth of up to 40 meters, with the highest elevation of 168 meters above ground level. The existence of faults on all tracks has a depth ranging from 16.75 meters. In the research area, many fractures were found which were possibly caused by the 2018 earthquake activity which led to the finding of faults on each trajectory. The type of rock that indicates the presence of a fault is breccia rock that experiences discontinuity with a resistivity value of (7.33 – 82.1) ohm-m and is filled or covered by sedimentary deposit rocks, namely clay and sandy loam with a resistivity value of (0.483 – 3.62) ohm-m. The faults in Sambelia District are micro-faults forming a line through exposed fractures extending to the northeast. The average geometry of the fault is: 15 meters wide, 77° average slope and 37° northeast strake .
REVIEW OF ADSORPTION OF HEAVY METALS BY ADSORBENT MnFe2O4 – ZEOLITE IN WATER Melinia, Luh Ayu; Naibaho, Marzuki; Puspita, Endah; Ramlan, Ramlan; Ginting, Masno
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.215

Abstract

The existence of quality water on earth is essential for life and the consumption of existing living things. The problem of water pollution is a matter of great concern in world researchers' management of water resources. Heavy metals have a toxic effect on humans and the environment. This paper reviews the characteristics and methods of synthesis of MnFe2O4 and zeolite materials as adsorbents for removing heavy metal ions in water with critical properties such as surface area, magnetic properties, and adsorption capacity. We have collected data regarding the appropriate method for synthesizing MnFe2O4 and zeolite nano adsorbents. We have accumulated much data on the properties of MnFe2O4 and zeolite materials and the optimum adsorption capacity for heavy metal ions. Experimental factors such as pH, temperature, adsorption capacity, and ionic strength affecting metal ion removal have also been explored.
INVESTIGATION OF THE GEOTHERMAL RESOURCE POTENTIAL USING GEOELECTRICAL METHOD WITH THE WENNER CONFIGURATION: A CASE STUDY IN LEBONG REGENCY, INDONESIA Raihana, Hana; Nazli, Khairun; Suhendra, Suhendra; Refrizon, Refrizon; Halauddin, Halauddin
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.225

Abstract

In geothermal reservoirs, hydrothermal distribution is significant. The most widely utilized geothermal reservoirs to date are those of hydrothermal systems, which are geothermal systems where the reservoir contains steam, water, or a mixture of both, depending on the pressure and temperature of the reservoir. One of geophysical method that is enough to map subsurface conditions to determine the hydrothermal distribution is the 2-Dimensional Geoelectric method using the Wenner configuration. This method aims to study the variation of rock resistivity below the earth's surface, resulting in a two-dimensional profile of the subsurface resistivity model used to describe the layered subsurface resistivity structure. The results are in the form of 2-Dimensional modeling of the distribution of hydrothermal manifestations with data processing using pyGIMLI (Python Library for Inversion and Modeling in Geophysics) software. In the study area  Pungguk Pedaro Village, Bingin Kuning District, Lebong Regency, the Hulusimpang Formation has a high alteration intensity, as evidenced by the weathering in rocks and the micrographic appearance. The types of stones found in this research area include andesite rocks, including sandy gravel, volcanic breccia, tuff, andesite, basalt, basalt-andesite sand, silty sand, and clay. Or rocks derived from acidic magma.
FABRICATION OF CHITOSAN BIOPOLYMER FROM PEARL OYSTER SHELLS (Pinctada maxima) FOR MEDICAL APPLICATIONS Nurmaulida, Siti Ema; Alawiyah, Geby; rahayu, Susi; Taufik S, Ahmad; Hidayatullah, Kholik; Kurniawidi, Dian W.; Ali, Muhamad
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.227

Abstract

Chitosan is one of the biopolymers that has recently been developed in the medical field. Chitosan is biocompatible, biodegradable, and non-toxic, so it is safe for the human body. This study aimed to identify the characteristics of chitosan isolated from pearl oyster shells. Chitosan is obtained through three stages: deproteination, demineralization, and deacetylation. Characterization of chitosan is done physically and chemically including organoleptic test, yield calculation in each step of isolation, FTIR, and XRD. Isolated chitosan identified deacetylation degree and functional group with FTIR. While the crystal structure was determined using XRD. The results showed that chitosan powder has a beige color with a final yield of 7,06%. The characterization of FTIR shows that synthesized pearl oyster shells have successfully formed chitosan compounds with a deacetylation degree of 81,50%. Another characteristic is the crystal structure obtained; chitosan has orthorhombic unit cells with a degree of chitosan crystallinity of 36,94%. Based on the result, chitosan has met several standards in medical applications as a biomaterial.
PHYSICOCHEMICAL PROPERTIES ANALYSIS OF LOCAL CERAMICS WITH ACTIVATED CARBON ADDITIVE BASED ON RUBBER FRUIT SHELLS AS THERMAL INSULATORS Kurniawan, Chandra; Yuliza, Elfi; Irkhos, Irkhos; Fitriani, Dyah
Indonesian Physical Review Vol. 6 No. 3 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i3.232

Abstract

Many building materials that function as insulators to maintain indoor temperature stability during hot weather have been developed. One of them is porous ceramics applied to building walls as heat absorbers. Research related to the manufacture of porous ceramics began to emerge to find the optimal composition when applied as an insulator that can absorb heat well. In general, porous ceramics use activated carbon as a pore agent. Activated carbon can be obtained by carbonating agricultural wastes such as coconut shells, hazelnut shells, rubber fruit shells, rice husks, and cocoa shells. Research continues to develop in finding the best-activated carbon base material according to the required material characteristics. Researchers will take advantage of the abundant potential of local natural resources. The method used to make porous ceramics is to mix clay and activated carbon with a clay-carbon composition ratio of 100:0, 90:10, 80:20, 70:30, 60:40, and 50:50. The sample is made by mixing the two materials and then printed by dry pressing method with a load of 5 tons held for 10 minutes. After the sample is dried at room temperature, it is sintered at 900oC with a holding time of 3 hours. Next, the sample is characterized by determining density, porosity, and water absorption and then tested for thermal properties. After that, the surface morphology and elements in the sample are seen. The optimum composition of clay-carbon mixture is 70:30 grams.  Ceramics using activated carbon from rubber fruit shells are suitable as building construction materials as heat insulators because they can absorb heat up to 500oC.
THE EFFECT OF HANDPHONE RADIATION ON HEMATOLOGY PROFILES Kurniasari, Septiana; Yunus, Muhammad; Madjid, Nursia; Umar, Sartika Rusdin; Amir, Asmiati; Fuadi, Nurul
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.233

Abstract

The use of handphone is increasing, making handphone users have to focus more on the side effects of using handphone on health. Handphone is included in the category of electromagnetic waves. Exposure to electromagnetic fields can affect human health, especially the hematological profile. This type of research is observational research with a descriptive approach. Hemoglobin, erythrocyte, leukocyte and thrombocyte levels were obtained from the results of blood checks in the laboratory. The results showed that exposure to handphone radiation caused a decrease in hemoglobin levels up to 11%, an increase in erythrocyte levels up to 13%, an increase in leukocyte levels up to 14%, and an increase in thrombocyte levels up to 35%.Handphone radiation triggersoxidative stress caused by formation of ROS (Reactive Oxygen Species).
SPATIOTEMPORAL DISTRIBUTION OF THE CONGLOMERATE RESERVOIR JATIBARANG FORMATION, MELANDONG FIELD, NORTH-WEST JAVA BASIN, INDONESIA Adhari, Muhammad Ridha; Nirwana, Akmal Muhni; Gunarsih, Dina
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.234

Abstract

Subsurface mapping of the distribution of the reservoir is essential to be conducted in order to minimize many risks such as financial losses and also to increase profit from hydrocarbon production. This research was conducted on the Jatibarang conglomerate reservoir in Melandong Field, North West Java Basin, Indonesia. There are three objectives of this study which are to perform elastic impedance (EI) seismic inversion using available 3D seismic data, to determine the most suitable elastic impedance angle for the data, and to map spatiotemporal distribution of the Jatibarang Formation reservoir in the Melandong field, North West Java basin, Indonesia. EI inversion was selected for this study using the inversion angle ranging from the near stack (5º-15º) to the far stack (20º-30º). Results from this study show that EI seismic inversion can help in detecting the distribution of the lithology and hydrocarbon within the target zone. Angle 5º is considered as the best EI angle for the studied data as indicated by a correlation value of 0.65. Moreover, EI angles 15º and 10º are less reliable as shown by their correlation value of 0.6 and 0.56, respectively. These results are expected to provide some new insights into the distribution of the Jatibarang reservoir, and help in exploration, exploitation, and development of oil and gas fields in Melandong Field, North West Java Basin, Indonesia.
STRUCTURE AND MORPHOLOGY ANALYSIS OF ANNEALING POST-TREATMENT THIN FILM TITANIUM AND COPPER-DOPED ZINC OXIDE Astuti, Budi; Abidah, Niswatul; Fatiha, Egy Awalia; Ardi Nugraha, Krisna
Indonesian Physical Review Vol. 6 No. 3 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i3.235

Abstract

Ti-Cu doped ZnO thin film has been successfully deposited on a preparate glass substrate using the spin coating method with post-treatment annealing temperatures of 350oC - 550oC. This research analyzes the structure and morphology of Ti-Cu doped ZnO thin films on DSSC performance. The crystal structure of Ti-Cu doped ZnO thin film was characterized using X-Ray diffraction (XRD) to determine the effect of annealing temperature on the quality of its crystal structure. XRD results show that the crystal structure is dominant in the (101) plane, with lattice parameters in the crystal tending to be constant at a = b = 5.21 and c = 3.25 so that the crystal volume tends to be constant at 47.77 Ã…. Furthermore, the FWHM value tends to decrease from 0.4419o to 0.2523o, crystal size tends to increase from 19.76 nm to 34.60 nm, dislocation density decreases from 0.0025 nm-2 to 0.0008 nm-2, stress decreases from 0.58% to 0.33%, and strain tends to increase from -1.364 GPa to -0.782 GPa. This indicates an improvement in crystal structure along with the addition of an annealing temperature of 350oC - 550oC. The SEM results showed that an annealing temperature of 450oC is a good temperature compared to other film variations, as evidenced by the agglomeration's narrowing and the grain size decrease.
DOSIMETRIC EVALUATION OF POST-MASTECTOMY THREE-DIMENSIONAL CONFORMAL RADIATION THERAPY (3DCRT) BREAST CANCER TREATMENT PLANS Herwiningsih, Sri; Naba, Agus; Rianto, Sugeng; Hentihu, Fatimah Kunti
Indonesian Physical Review Vol. 6 No. 3 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i3.240

Abstract

Breast cancer is the most diagnosed cancer in women globally. External beam radiotherapy is one method to treat breast cancer, which can be given to the patients after mastectomy. The changes in anatomy of breast tissues after mastectomy makes the radiotherapy treatment very challenging to ensure the prescribed dose delivered to the tumour target while the radiation to the surrounding critical organs is kept to be low. This study aims to evaluate the dosimetric parameters of radiotherapy treatment plans for breast cancer patients after mastectomy delivered using 3DCRT technique. The evaluation includes the target coverage to the PTV, defined as the volume of PTV receiving 95% of the prescribed dose and the volume of PTV receiving 107% of the prescribed dose. The min, max and mean dose to the PTV were also recorded. The dosimetric parameters to the OARs were Dmean and V20 to the lung, Dmean and V25 to the heart, Dmean to esophagus and Dmax to the spinal cord. The result shows that target coverage is fulfilled in most of the plans, however the host spot in the PTV also observed in the most of the plans. Dose to heart, left lung, esophagus and spinal cord are relatively low and below the constraint recommended by QUANTEC, however the V20 to the right lung exceeded the constraint in the most of the plans. The combination of photon and electron beam might be useful to reduce the excessive dose to the right lung.
IDENTIFICATION OF SUBSURFACE STRUCTURES IN SOUTH BENGKULU MANNA CITY BASED ON THE MASW METHOD Saragih, Ronni Samuel; Refrizon, Refrizon; Hadi, Arif Ismul
Indonesian Physical Review Vol. 6 No. 3 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i3.244

Abstract

South Bengkulu is one of the regencies in Bengkulu Province which is in an area of active tectonic plate activity, namely the India-Australia and Eurasian plates so it is prone to earthquakes. The City of Manna continues to carry out developments so that it requires various information for urban and regional planning, especially information on subsurface rock structures. This study aims to determine the structure of rock layers based on shear wave velocity (Vs), Poisson ratio, shear modulus and Young's modulus in Manna City. This research was conducted using the Multichannel Analysis of Surface Wave (MASW) method at 12 measurement stations. The tool used is the PASI 16S24-P seismograph. Data processing to produce a 1D model is WinMASW 5.0 Professional Software and to display 3-D data Voxler software is used based on the value of Vs. Then do the calculation to get the value of Vs30.  From the results of the Vs30 value in the study area, it shows that the Manna City area consists of 4 rock types including soft soil (SE), stiff soil (SD), very dense soil and soft rock (SC) and rock (SB) rock types. The highest layering value of shear wave velocity (Vs) is at the fourth point with a value of Vs 386-1263 m/s, Poisson ratio 0.40-0.35, shear modulus 298-3652 MPa and Young's modulus 804-9430 MPa at a depth of 4.4 -30 meters. While the smallest value is at the sixth location point with a value of Vs 180-474 m/s, Poisson ratio 0.40-0.30 shear modulus 60-461 MPa, and Young's modulus 168-1.243 MPa at a depth of 2.6-30 meters.

Page 14 of 23 | Total Record : 221

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