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INDONESIA
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology)
Published by Badan Tenaga Nuklir Nasional
ISSN : 14113481     EISSN : 25031287     DOI : https://search.crossref.org/?q=%22jurnal+sains+dan
Core Subject : Health, Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Energy Environmental Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics
Focus of Publication in Indonesian Journal of Nuclear Science and Technology : Result of experiment in the field of nuclear science and technology and its applications in various fields. Acceptable topics include: Radioisotope, Radiopharmacy, Nuclear Medicine, Nuclear Radiation and its Measurement, Nuclear Physics and Reactors, Nuclear Instrumentation and Radioactive Waste including its applications in the fields of health, biology, industry, agriculture, metallurgy and environment
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 22, No 2 (2021): Agustus 2021" : 5 Documents clear
COMPUTATION STUDY OF RADIOISOTOPES GALLIUM-68 (68Ga) PRODUCTION USING LONG-LIVED & HIGH ACTIVITY METHODS Badra Sanditya Rattyananda; Muhamad Abdulkadir Martoprawiro; Aminatus Arifah; Aristia Pratiwi Meliawati; Merika Indri Widayanti; Rasito tursinah; Yanuar Setiadi
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 22, No 2 (2021): Agustus 2021
Publisher : HIMNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2021.22.2.6440

Abstract

Radioisotopes used for gamma-ray-based diagnostics have the main problem that imaging resolution quality.Gallium-68 is a positron (β+) emitting radioisotope that has better imaging resolution than gamma-based radioisotopes. Gallium-68 (68Ga) can be produced by irradiating natural gallium or zinc-68 enriched as a target with protons in an accelerator facility. Indonesia has planned to build a cyclotron type accelerator that operates in 13 MeV proton energy and 50 µA proton beam who has initials named DECY-13. Before it was commissioned for radioisotopes production purpose that was must conduct a preliminary study to determine 68Ga optimum irradiation time and properties, one of which was the monte carlo computation method using PHITS v3.24 software. Simulations were begun by irradiating proton with natural gallium target for 25 days with 2 days cooling and zinc-68 enriched for 120 minutes with cooling 10 minutes. The results at EOB of the long-lived process using the natGa target obtained total radioactivity of 189.42 MBq (5.12 mCi). The total radioactivity result of high activity process which used 68Zn enriched as a target was 268.6 GBq (7.259 Ci). the radioactivity was compared with another accelerator, that the long-lived process was too small and uneconomical to done, but the high activity process was feasible to produce. The results of this research expected will be considered as a feasibility study for the 68Ga production process in Indonesia in the future.
EFFECT OF GAMMA IRRADIATION ON GROWTH OF ESCHERICHIA COLI AND SALMONELLA SP. Dita Aisyiyah Larasati; Bambang Suharto; Ruslan Wirosoedarmo; Irawan Sugoro
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 22, No 2 (2021): Agustus 2021
Publisher : HIMNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2021.22.2.6018

Abstract

Escherichia coli was still detected in treated water and Salmonella sp. filled 90% of the pathogenic bacteria content in the Wastewater Treatment Plant (WWTP) sludge. This research aimed to know the effect of gamma irradiation on the growth of E. coli and Salmonella sp. Experimental bacteria were in the form of un-raw material, bacterial isolates. The experimental method of this research gave gamma irradiation doses 1, 2, 3, 4, and 5 kiloGray (kGy) to bacterial suspensions. The isolates were cultured on Nutrient Agar (NA) and followed by cultured on Nutrient Broth (NB) to get the suspensions. The suspensions were put in microtubes for irradiation then followed by enumeration on Plate Count Agar (PCA) in Total Plate Count (TPC) based on SNI-2897-2008. This research proved that the higher dose of gamma irradiation had been given, the lower growth of bacteria (or were the higher death number of bacteria) resulted. Decimal Reduction Dose (D10) value of E. coli and Salmonella sp. were 0,3 kGy and 0,35 kGy, and totally dead by ≥ 3 kGy and ≥ 4 kGy. For further research might be conducted on raw material such as WWTP sludge, wastewater, drinking water, river water, soil water, or organic fertilizer.EFFECT OF GAMMA IRRADIATION ON GROWTH OF ESCHERICHIA COLI AND SALMONELLA SP.
THE STRATIFICATION BEHAVIOR OF REACTOR MATERIALS IN THE FRAMEWORK OF MOVING PARTICLE SEMI-IMPLICIT Yacobus Yulianto; Asril Pramutadi Andi Mustari; Amir Baliana
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 22, No 2 (2021): Agustus 2021
Publisher : HIMNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2021.22.2.6314

Abstract

In reactor research, the safety of the reactor plays an important role. Besides the experiment research, computational simulation can also provide important information about the behavior of materials inside the reactor core. The Moving Particle Semi-Implicit (MPS) method assists in providing information about the reactor material computationally. In this study, the stratification process of several materials, i.e. the melts of PbBi, PbLi, and Pb in combination with Al, have been investigated by simulation. The time to achieve stratified conditions for each material has been obtained where each paired material needs 0.5 seconds to reach the stratified condition. It is also obtained that the Pb-Al is the fastest in reaching the stratified condition among the other used materials.
ANALYSIS OF CS-137 RADIONUCLIDE ON THE EAST JAKARTA FLOOD CANAL WATER SAMPLES USING GAMMA SPECTROMETER Indah Dwi Cahyati; Hendrawati Hendrawati; Ghulam Fathul Amri
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 22, No 2 (2021): Agustus 2021
Publisher : HIMNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2021.22.2.6438

Abstract

Radionuclide Cs-137 is a radioactive element that is soluble in water, so its distribution in the environment is influenced by mixing and diffusion, so that Cs-137 radionuclide can cause harmful effects on biotic and abiotic components in the waters. The East Jakarta Flood Canal is a macro drainage system for the city of DKI Jakarta that drains water to Marunda beach, most of the water quality has been polluted with light to heavy levels of pollution. This study aims to determine the water quality of the East Jakarta Flood Canal including in situ and ex situ physical and chemical properties parameters (temperature, pH, salinity and TDS) and Cs-137 radionuclide concentration parameters and the distribution pattern of Cs-137 radionuclides at each sampling point. The samples used were water and kale, the samples were filtered and concentrated from the initial volume of 20 liter of water to 1 liter of water and 10 kilograms to 1 kilogram of Kale plant. The levels of Cs-137 were measured with a gamma spectrometer instrument for 3600 seconds, then data analysis was carried out. The results obtained are the concentration level of Cs-137 in Simplo KBT water ranging from 0-1.571 Bq/L, for duplo 0-0.424 Bq/L while for kale plant 0-3,228 Bq/Kg the overall results are within the quality standard limits set by regulations. the head of BAPETEN Number 7 of 2013 concerning the limit value of environmental radioactivity, which is 2.6×102 Bq/L.
ELEMENTS CHARACTERIZATION IN RICE FLOUR AND FISH MEAL FOR LABORATORY COMPETENCY Natalia Adventini; Agus Rakhim; Woro Yatu Niken Syahfitri; Syukria Kurniawati; Endah Damastuti; Indah Kusmartini; Dyah Kumalasari
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 22, No 2 (2021): Agustus 2021
Publisher : HIMNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2021.22.2.6937

Abstract

Nowadays, nutrition problem becomes an important issue in many developing countries. Lack or excess macro and micro elements in food can interfere human health. Therefore, food safety needs a reliable analytical method in accuracy and precision. In this activity, characterization of toxic (As, Pb, Cd, Hg) and essential elements (Na, K, Ca, Mg, Fe,Cu, Zn) in rice flour and fish meal had been done using Neutron Activation Analysis (NAA) and Atomic Absorption Spectrophotometry (AAS). Both samples provided by The Asia Pacific Food Analysis Network (APFAN) on 2017. Three replications were prepared. Reducing the probability of contaminating the sample is a must. AAS needs homogenous liquid samples therefore samples were digested using microwave digestion to avoid loss of volatile elements from the samples. Evaluation on rice flour and fish meal samples analysis were based on Z-score value with 3 categories: satisfactory, questionable and unsatisfactory result. Both methods had satisfactory result in rice flour where Z-score value of K, Ca, Zn < 2 meanwhile AAS gave Mg, Fe, Cu, Cd < 2 in the same sample. NAA gave the Z-score 2 < Mg < 3 in rice flour. Satisfied performance in fish meal gave Z-score values of K, Ca, Mg, Fe, Zn < 2 for both of them. Values of Na < 2 and 2 < Hg < 3 obtained from NAA in fish meal and Z-score of As was < 2 with NAA. Moreover, 2 < Pb < 3 obtained from AAS in fish meal sample. These results showed that NAA and AAS are accurate and precise methods on food analysis in rice flour and fish meal from APFAN to maintain laboratory competency.

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