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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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COMPARING SCIENTIFIC COMPUTING ENVIRONMENTS FOR SIMULATING 2D NON-BUOYANT FLUID PARCEL TRAJECTORY UNDER INERTIAL OSCILLATION: A PRELIMINARY EDUCATIONAL STUDY Herho, Sandy; Anwar, Iwan; Herho, Katarina; Dharma, Candrasa; Irawan, Dasapta
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.335

Abstract

This study presents a preliminary numerical investigation of the two-dimensional trajectory of a non-buoyant fluid parcel subjected to inertial oscillations and abrupt external forcing events. The simulations were implemented using Python, GNU Octave, R, Julia, and Fortran open-source scientific computing environments. By running 1,000 iterations in each environment, we evaluated the computational performance of these languages in tackling this idealized problem. The results, visualized through static plots and animation, validate the numerical model's ability to represent the fundamental physics governing fluid motion. Statistical analysis using the Kruskal-Wallis test and Dunn's post-hoc test with Bonferroni correction revealed that Fortran exhibits significantly faster execution times than other environments. However, the choice of programming language should also consider factors such as coding expertise, library availability, and scalability requirements. This study focuses on the performance of scientific computing environments within each language rather than the languages themselves. The observed execution times should be interpreted in the context of the specific environments used, as they often leverage optimized libraries written in lower-level languages. Despite the limitations of this work, such as the simplified 2D model and the use of a single hardware configuration, this study provides valuable insights into selecting appropriate computational tools. It contributes to educational resources for teaching idealized fluid dynamics models. Future studies could explore more complex scenarios, a more comprehensive range of programming environments, and the impact of different numerical schemes and physical parameterizations.
MINERAL PHYSICS ANALYSIS OF ALLUVIAL ROCKS AS A SOURCE OF SHALLOW HYDROCARBON SEEPAGE IN BELIS VILLAGE, WARU BASIN, EASTERN SERAM ISLAND, MALUKU PROVINCE Sapulete, Sisca M.; Nukuhaly, Manda S.; Souisa, Matheus
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.337

Abstract

Belis Village is located in the Waru basin adjacent to the Bula basin on the eastern part of Seram Island and has potential shallow hydrocarbon manifestations. This research aims to determine the mineralogical characteristics of the rocks that make up shallow hydrocarbon manifestations at the research location. The research method used is physical analysis of minerals including petrographic analysis and XRD methods. The analysis results of the XRD method show an abundance of quartz minerals at 58%, followed by clay minerals at 35%, opaque minerals at 25%, and the rest in the form of cavities while feldspar minerals are secondary minerals. The results of the XRD analysis show that the more dominant mineral is protoenstatite (MgSio3) with an average abundance of 70.33% as a carrier of shallow hydrocarbon seeps, Quartz (SiO2) with an average abundance of 18.46%, and Clinoestatite with an average abundance of 11.21% as a mineral associated with shallow hydrocarbon seeps.
PHASE AND FUNCTIONAL GROUPS ANALYSIS OF ZNO NANOCRYSTALLINE SYNTHESIZED FROM CITRUS ORANGE PEEL Ma’arif, M. Samsul; Alfina, Fitria Tahta; Pratiwi, Devi Ragita Putri; Rohmawati, Lydia
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.338

Abstract

The high production and market demand for citrus fruits can increase environmental waste. Most people do not use orange peel waste even though this peel contains bioactive compounds and phytochemicals that have the potential to form ZnO using the green synthesis method. This new research offers an environmentally friendly solution to reducing orange peel waste using abundant natural resources for nanotechnology applications. Therefore, this research aims to identify the phase of ZnO material and functional groups from orange peel extract. The extraction method of ZnO from Citrus sinensis orange peel uses green synthesis. The analysis in this research indicates that the sample has the phase of a zincite crystalline and a nanocrystalline size of 12.98 nm. The sample has an absorption peak at a wave number of 4000 – 400 cm-1 with functional groups indicating OH, C=C, Zn-OH, and Zn-O stretching vibration
GROUNDWATER RESOURCE ESTIMATION USING VERTICAL ELECTRICAL SOUNDING AND RESISTIVITY TOMOGRAPHY IN WEST MANOKWARI, WEST PAPUA, INDONESIA Kammarudin, Kammarudin; Wahyudi, Wahyudi; Lewerissa, Richard; Afkril, Baina; Erari, Ishak
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.340

Abstract

West Manokwari district in Manokwari Regency, West Papua province, Indonesia, is an area that continues to develop as part of the provincial capital region. Geologically, this area is located in three main formations: the Manokwari Formation, the Befoor Formation, and the Alluvium-littoral Formation at a depth radius between 0 and 500 meters. These formations comprise permeable sedimentary rocks that allow aquifer layers to develop. This study employed the geoelectric resistivity method, using both the Wenner and Schlumberger configurations, to identify the potential of groundwater in the West Manokwari district and address the scarcity of clean water sources for the local community. Subsurface interpretation was conducted on three measurement lines using forward modeling and inversion techniques, such as earth resistivity tomography and vertical electric sounding. The results of this interpretation indicate that the subsurface rock resistivity for the three lines is generally consistent and supports each other. The subsurface can be divided into four main layers: topsoil, limestone, sandstone, and bedrock. At the surface, rock resistivity is dominated by high values up to a depth of 6 m, after which it decreases to a depth of 30 m, which is considered a potential aquifer layer for exploration with medium to low resistivity. A bedrock layer with a resistivity of over 2000 Ωm is estimated to be at depths greater than 30 m. This study is expected to serve as a valuable resource for groundwater exploration in the West Manokwari district of West Papua Province.
FACILE SYNTHESIS OF ACTIVATED CARBON/ALGINATE/CHITOSAN COMPOSITE BEADS AS RHEMAZOLE BRILLIANT BLUE R ADSORBENT Hermanto, Dhony; Prihatini, Putri Jauhar; Apriani, Niza Yusnita; Kurniawati, Lely; Murniati, Murniati; Hamdiani, Saprini; Ismillayli, Nurul; Kamali, Siti Raudhatul
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.343

Abstract

Developing composite beads composed of chitosan, alginate, and activated carbon for dye removal is essential due to their improved adsorption capabilities and environmental benefits. By utilizing natural resources efficiently for an effective dye removal process, this study developed an activated carbon/alginate/chitosan composite bead as Rhemazole Brilliant Blue R (RBBR) adsorbent. The surface shape of composites exhibits more protrusions, grooves, and asymmetric pores than activated carbon, which could improve dye adsorption capability. FTIR analysis verified that functional groups such as OH, NH, protonated amine, and carboxylate from the constituent polymers were enriched in the activated carbon/alginate/chitosan composite. These groups also function as active sites for adsorbents. It was aligned with the composite beads' Freundlich isotherm model, which shows that heterogeneous or many active sites contribute to adsorption and provide multilayer adsorption. The kinetic model of pseudo-second order fits well with the adsorption process, indicating that chemisorption is the rate-limiting step in RBBR adsorption. The optimum adsorption conditions were at pH 1, with an adsorbent dose of 0.08 g, RBBR dye concentration of 125 mg/L, and a contact time of 60 min. The composite beads also exhibit stability in acidic and basic solutions, with the effectiveness of being reused up to four times, providing a reusable adsorbent with versatility in various water treatment conditions. Hence, synthesizing activated carbon/alginate/chitosan composite beads presents a promising solution for sustainable wastewater treatment based on biodegradable and eco-friendly composite.  
CHARACTERIZATION AND ELECTROCHEMICAL BEHAVIOUR OF BORON DOPED DIAMOND IN DETECTING AMODIAQUINE Dewanto, Hizkia Alpha; Awali, Jatmoko; Hizam, Fadli; Destiny, Keysi Devain; Al Habib, Irsyad; Nabila, Najwa; Handayani, Murni; Triana, Yunita
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.345

Abstract

Amodiaquine (AQ) is an essential medicine in treating malaria. Yet, the threat of drug resistance and toxicity necessitates accurate measurement of AQ in the human body. This research determines the amodiaquine (AQ) detection performance of boron-doped diamond (BDD) working electrodes. The study utilizes different pulse velocity (DPV) methods to analyze the AQ reaction behavior of BDD. The research demonstrates the reaction mechanism: Two electrons are transferred, and irreversible oxidation reactions occur. The sensor limit of detection (LOD) is measured to determine the performance of working electrodes for AQ detection. The LOD is calculated between 0.0645 µM and 0.3 µM, and changes in analytical concentrations relative to maximum current are calculated. The LOD of the BDD electrode is 1.5×10–8 M, lower than previous research on AQ sensors, showing the effectivity of the BDD electrode as an AQ sensor.
EGGSHELL CALCIUM NANOPARTICLES: A SUSTAINABLE APPROACH TO BOOST BIOGAS PRODUCTION FROM TOFU LIQUID WASTE Sari, Yessie Widya; Attar, Zia Rausyanfikr; Widyarani, Widyarani
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.350

Abstract

This study explored enhancing biogas and methane production from tofu liquid wastewater (TLW) by adding calcium nanoparticles. Eggshell calcium nanoparticles (ECN) in the form of nano Ca (OH)2 were introduced to improve the degradation process. Chicken eggshells were calcined at 1000 °C to create Ca (OH)2 particles, followed by milling to yield ECN. Characterization using X-ray diffraction (XRD) confirmed the presence of Ca (OH)2 in the ECN while scanning electron microscopy (SEM) revealed the irregular morphology of the particles. Energy-dispersive X-ray spectroscopy (EDS) analysis showed calcium and oxygen as the primary elements. To investigate the effect of ECN in enhancing biogas and methane production, we evaluated 3 levels of ECN concentrations during anaerobic fermentation of TLW: 2.5 g/L, 5 g/L. and 7.5 g/L. We observed that adding ECN of 5 g/L during anaerobic digestion improved biogas production. Further, at this concentration, the methane concentration on the biogas was 64%, while on the control samples (without ECN) was only 0.09%. These findings suggested the benefit of ECN supplementation during anaerobic digestion of TLW for biogas production.    
A GUI-BASED DATA ACQUISITION SYSTEM FOR EIT USING TWO CURRENT INJECTION METHODS Zarkasi, Ahmad; Hananda Putra, Muhammad Fauzan; Natalisanto, Adrianus Inu; Nurhanafi, Kholis; Hidayatullah, Muhammad; Kusmiran, Amirin; Nuraidha, Amalia C
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.356

Abstract

The current injection method played an essential role in the data quality of impedance measurement using the electrical impedance tomography (EIT) technique. Previous studies have largely utilized only a single current injection method with limited interface access, which restricts the effectiveness of EIT systems. In this paper, a graphical user interface (GUI)-based data acquisition system was designed to improve user interaction and optimize the control system. The system was equipped with multiple current injection methods, allowing researchers to choose which method to use in the measurement process. The designed hardware comprises a V-to-I converter circuit, multiplexer, electrodes, peak detector, and filter circuit. Testing results indicate that the V to I converter circuit has an average peak difference between voltage and current of 4.86% and an average error of 0.69% in the peak detector circuit. The multiplexer circuit switches quickly and consistently, while the filter circuit remains stable at the 50 kHz frequency used in this study. These results demonstrate that the designed circuits perform adequately and effectively, ensuring reliable and accurate measurements.  Additionally, the data acquisition software, presented as a GUI, effectively facilitates the selection of current injection methods and the display of boundary data simulation (BDS) on the object. This is demonstrated by the spatial inhomogeneity patterns visible through BDS in both the adjacent and opposite methods
MORLET’S WAVELET ANALYSIS ON EL NIÑO SOUTHERN OSCILLATION (ENSO) AND THE INDIAN OCEAN DIPOLE (IOD) FOR 84 YEARS: 1940-2023 Suhadi, Suhadi; Putri, Jamiatul Khairunnisa; Iskandar, Iskhaq; Supari, Supari; Irfan, Muhammad; Ariska, Melly; Akhsan, Hamdi
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.363

Abstract

As is known, the impact caused by El Niño Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) can reach extreme levels, especially rainfall in Indonesia. So, updating information on events and cycles of these phenomena is essential. Using Sea Surface Temperature (SST) data spanning the previous 84 years (1940–2023) from ERA5, we examined Sea Surface Temperature Anomalies (SSTA), which serve as a predictive tool for ENSO and IOD events. Apart from that, in this research, SSTA variance analysis was also carried out using Wavelet. The analysis results show several Positive IOD-Like events (1943, 1944, 1977, 1996) and Negative IOD-Like (1985, 1992, 2016). Apart from that, the results of this research also show that El Niño in 2002/03 coincided with Negative IOD in 2002. The results of Wavelet analysis show that the SSTA DMI variance experienced increased activity in the periods 1940-1968, 1969-1991, and 1992-2023. The Wavelet analysis also shows that ENSO activity increased in 1970-2000 and decreased again in 2000-2023.
DRIED NATA DE COCO WITH WATER ABSORPTIVITY COMPETING SILICA GEL Rahmayanti, Handika Dany; Yuliza, Elfi; Amalia, Nadya; Abdullah, Mikrajuddin
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.383

Abstract

Nata de Coco (NDC)  is a network of cellulose fibers that traps abundant of water. If a freshly made NDC is dried to remove nearly all trapped water, we will get a very hygroscopic material. This material is potential for making water adsorber that might compete the well known silica gel. NDC was prepared using standard methods and its water absorption was investigated. Dried NDC was used in this study. For comparison, we also investigated the water absorption of several commercial NDC. To determine its business prospects, the water absorption of silica gel was also investigated. The results showed that dried NDC could absorb water vapor comparable to the absorption of commercial silica gel. This suggests that dry NDC has the potential as an alternative water vapor absorber in food packaging. The advantages of the NDC compared to silica gel are safer and environmentally benign, and easily decomposed.

Page 13 of 23 | Total Record : 221

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