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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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ANALYSIS OF CORROSION RATE AND HARDNESS VALUE OF LOW CARBON STEEL COATED WITH PAni-TiO2 SYNTHESIZED BY ELECTRODEPOSITION Sulistyaningsih, Eka; Lestari, Nidia; Yusuf, Muhammad; Wahyuningtyas, Dewi
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.201

Abstract

In the industrial world, carbon steel has been widely used. Corrosion of carbon steel cannot be avoided, so many studies have been carried out to overcome Corrosion. One of the efforts to overcome Corrosion is by coating. Low-carbon steel coating was done by combining TiO2 and polyaniline (PAni), which was carried out by electrodeposition. A carbon steel specimen that has been coated is corroded by immersing it in an acid and salt medium. After Corrosion, the specimen is tested for hardness. The specimen without inhibitor has a hardness value of 131 kg/mm2, while the specimen with the highest hardness value is a specimen coated with PAni 10-1 M and TiO2 10-4 M at 336 kg/mm2. Based on visual observation, the Corrosion that occurs is uniform.
MORPHOLOGYCAL, ELEMENTAL CONTENT, AND PHYSICAL PROPERTIES OF CLEANED CLINOPTITOLITE ZEOLITE (10X) USING SONICATION AND MICROWAVE Puspita, Endah; Naibaho, Marzuki; Ramlan, Ramlan; Ginting, Masno
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.204

Abstract

This research was conducted to determine the morphology, elemental content and physical properties of the zeolite samples before and after cleaning. The characterization used in this study is the Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX). Based on the results of SEM-EDX, it was shown that the 200 mesh zeolite sample and the zeolite that passed the filter had a non-spherical particle shape and no visible pores on the surface, while the microwave zeolite sample had an aggregate shape and visible pores on the particle surface which were very clear. In addition, in the 200 mesh zeolite sample, filtered zeolite and microwave zeolite each had an Al content percentage of 1.64%, 3.18 and 3.80% and a Si content of 7.58%, 15.15% and 18 .38%.
ACTIVATED CARBON PREPARED FROM COCONUT SHELL POWDER WITH LOW ACTIVATION TIME AS SUPERCAPACITOR ELECTRODES Rosi, Memoria; Fatmizal, M. Nanang Ziad; Siburian, Dedy Hendra; Ismardi, Abrar
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.205

Abstract

In this study, we prepared activated carbon from coconut shell with a low activating time for activated carbon (AC). The coconut shell powder (< 100 µm) allows for an effective pyrolysis process and low activation time (30 min) that reduces the cost of production. The AC has characteristics of micropore with average size of 1.9 nm and a surface area of 460.50 m2/g. For supercapacitor electrode, the AC electrodes have capacitance of 50, 66, and 67.5 F/g when 0.5 M, 1 M, and 2 M of Na2SO4 electrolyte was being inserted, respectively. In addition, the equivalent series resistance (ESR) of the AC electrode was 6.6; 4.3, and 4.1 W for 0.5 M, 1 M and 2 M of Na2SO4 electrolyte. These results indicate that the coconut shell powder can be an alternative source for supercapacitor application with moderate performance.
THE LITHOLOGY OF FLOOD PRONE AREAS USING THE VERTICAL ELECTRICAL SOUNDING (VES) METHOD Sinaga, Jesika Erni ELfrita; Budianto, Geri; Pritama, Vinki Loverly; Suhendra, Suhendra
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.209

Abstract

Rock lithology modeling of flood-prone areas has been carried out using the Vertical Electrical Sounding (VES) method in Rawa Makmur village, Bengkulu city. Field data acquisition using a stretch length of 160 with the MAE X612-EM Geoelectric tool forming a straight line. VES method, using Excel software for resistivity variations with depth and Progress lithology modeling. This research aims to determine the subsurface condition of flood-prone areas and the characteristics of rocks that make up flood-prone areas. The results of this study can be concluded that the Rawa Makmur village is dominated by sand (0,2-50 Ωm), silty sand (1-35 Ωm), gravel sand (20-150 Ωm) and clay (65-250 Ωm) at several points. VES 1, VES 2, VES 3, VES 4, VES 5, VES 8, and VES 9 have a shallow water table of 1-10 meters, close to the Rawa Makmur river and have a rock structure that is saturated with water so that it cannot absorb moisture on the surface and becomes a flood puddle. The characteristics of rocks that make up flood-prone areas are porous stones such as sand and gravel saturated with water. Sites that are not prone to flooding in the Rawa Makmur village at points VES 6 and VES 7 are dominated by the rock structure of sand (20-65 Ωm), gravel sand (100-200 Ωm), and dry gravel (100-1000 Ωm).
EFFECT OF ENERGY RADIANT LASER ON PHOTOANTIMICROBIAL TO DEGRADATION STAPHYLOCOCCUS EPIDERMIDIS BIOFILM CELLS MEDIATED SENSITIZER OF NANO SILVER-CHLOROPHYLL JATROPHA LEAF Astuty, Sri Dewi; Handayani, Yusri; Abdullah, Rismayani; Hajar, St.; Tabaika, Pryandi M.
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.214

Abstract

Chlorophyll compounds have been widely developed in photoinactivation research as organic photosensitizer agents, especially those extracted from green plants. Besides being natural and containing antimicrobial substances, the characteristic electronic properties of chlorophyll atomic have a long lifetime at the triplet level, so it is highly probable to produce Reactive Oxygen Singlet (ROS) while light activates. This phenomenon can potentially be applied in the mechanism of Photodynamic Therapy (PDT) or Photodynamic Inactivation (PDI) in various types of pathogenic bacteria that trigger infectious diseases. Laser light that activates photosensitizer molecules produces singlet oxygen which is reactive and toxic to microbial pathogens. In this study, will be found the efficacy of Jatropha leaf extracts combinate nano silver to inactivate biofilm cells of Staphylococcus epidermidis after being inducted by a red laser. Analysis of the research data quantitatively and qualitatively described the reduction in the number of biofilm cells and damage to the morphology of the biofilm cells with various energy radiant lasers applied through a scanning electron microscope (SEM) profile. The results showed that the photosensitizer agent, which combined Jatropha extracts with nano silver, obtained an inhibitory effect of 60% for the non-oxygenated group and 80% for the oxygenated group.
Cover, Editorial Board, Editor's Preface, and Table of Contents admin
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

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MICROZONING OF HAZARD VULNERABLE USING MICROSEISMIC METHOD WITH HVSR (HORIZONTAL TO VERTICAL SPECTRAL RATIO) ANALYSIS IN BAYAT DISTRICT, KLATEN, INDONESIA Yatini, Y; Kustanto Putra , Abdurrohim; Sungkowo , Ari
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.v6i2.206

Abstract

The Yogyakarta earthquake in 2006 caused damage in several areas, especially in the area of Klaten Regency. As a result, many infrastructures, houses, health facilities and casualties have been damaged. The research was conducted with the target of knowing the level of earth's hazard by microzoning soil vulnerability areas in the Bayat District, Klaten, Central Java. This study used the microseismic method with the HVSR (Horizontal to Vertical Spectral Ratio) analysis method. Where are the natural/dominant frequency parameters, natural amplification, and earthquake vulnerability index as measured parameters? This study aims to carry out microzonation of disaster vulnerability risks which are interpreted from the results obtained, namely amplification maps (A0), dominant frequency (f0), earthquake vulnerability (Kg), and shear wave velocity maps at a depth of 30 meters (Vs30). Data acquisition was carried out at 19 measurement points with a spacing between points having a distance of 1-2 km using a portable TDS seismograph. The acquisition results obtained varied values with A0 values 0.9 – 8.8, f0 values 1.0 – 13.8 Hz, Kg values 0.4 – 38.5, and Vs30 values 228.1 – 1635.4 m/s. From these results it can be categorized as zoning regarding the value of the level of disaster vulnerability based on the value of earthquake vulnerability (Kg) obtained to minimize damage and casualties  
DYNAMICS NOISE BEHAVIORS ON MAGNETO-OPTICAL KERR EFFECT MEASUREMENT SYSTEM Handoko, Djati; Kim, Dong-Hyun
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.v6i2.231

Abstract

Nowadays, computer and data processing industry are moving to nanomagnetic devices technology. One of the common measurement systems to observe nanomagnetic device are magneto optical Kerr effect and Faraday effects. The magneto-optical Kerr effect measurement system has been fabricated and precision noise measurement configuration was observed. A light intensity, which was reflected by thin film nanomagnetic surface, was measured accompany with its noise level. The lock-in amplifier was attached to pick up hysteresis signal and low noise level. Different frequency of lock-in amplifier was carried out to observe dynamics noise level behavior. Interestingly, we found butterfly shape noise corresponding to hysteresis loop shape. Furthermore,  noise behavior with 0.94 scaling exponent, was found with respect to lock-in amplifier frequencies suggested that measuring in low frequency became more challenging.
ANALYSIS OF ATMOSPHERIC DYNAMICS DURING TAILWIND PHENOMENA ON THE RUNWAY OF KUALANAMU AIRPORT Tambunan, Nensy Nindy; Frida, Erna; Darmawan, Yahya
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.v6i3.242

Abstract

A tailwind, a wind component in aviation, can pose risks during aircraft takeoff and landing by blowing from the aircraft's rear. At Kualanamu Airport on August 02, 2022, Air Navigation Indonesia (AirNav) reported an incident where an aircraft had to abort landing due to a tailwind on the runway. This study analyzes the atmospheric dynamics contributing to tailwind disruptions on that specific day. The analysis involved various steps, including assessing upper-level air humidity using reanalysis data processed with the GrADS application, evaluating air instability through the computation of TT, KI, and SI indexes using the RaOB application, and examining cloud formation using Himawari-9 EH satellite imagery. The analysis revealed the presence of Cumulonimbus clouds around Deli Serdang Regency on August 02, 2022, which led to tailwind effects at Kualanamu Airport. Cumulonimbus clouds are often associated with unstable atmospheric conditions and can generate severe weather events like thunderstorms, heavy rainfall, and strong winds. Cumulonimbus clouds indicate the likelihood of convective activity and strong winds. The strong winds caused by these clouds probably disrupted the Tailwind on the runway at Kualanamu Airport.
THE EFFECT OF USING 4 POINTS LOCKS AND 9 POINTS LOCKS MASKS ON PATIENT SET-UP IN NASOPHARYNX CANCER Anggraeni, Rina; Irsal , Muhammad; Sutoro, Shinta Gunawati; Widiatmoko, Mahfud Edy; Tarigan, Asumsie; Ardoni, Fitrus; Apriantoro, Nursama Heru
Indonesian Physical Review Vol. 7 No. 1 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i1.229

Abstract

The set-up aims to find out the value of the shift that occurs while the patient is undergoing the irradiation process on the X-axis (right-left), Y-axis (caudal-cranial), and Z-axis (anterior-posterior). The procedure for collecting research data is by making direct observations and being involved in measuring set-up shifts. The data used amounted to 20 nasopharyngeal cancer patients. Set-up shift measurement data were taken sequentially from fractions 1-33 for each patient using 4 and 9 points locks masks. Analysis of statistical test data using SPSS version 25, to determine the effect of using 4 and 9 points locks masks on shifts in nasopharyngeal cancer irradiation set-up patients with fraction group: Group 1 (fraction 1), Group 2 (Fraction 2 – 15), Group 3 (16-33)  using the Wilcoxon test because the normality test results were not fulfilled. If the p-value ≤ 0.05, there is an effect of using 4 and 9 points locks mask on shifts, while for p-value ≥ 0.05, there is no effect of using 4 and 9 points locks mask on set-up shifts in nasopharyngeal cancer irradiation set-up. The results of the shift in the set-up of 4 and 9 points lock irradiation vertically in the lateral, longitudinal, and vertical directions tend to be positive (left, caudal, posterior). There was no effect of all fraction groups using 4 and 9 points locks on the shift in nasopharyngeal cancer irradiation set-up p-value> 0.05.

Page 9 of 23 | Total Record : 221

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