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INDONESIA
Atom Indonesia Journal
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Core Subject : Science,
Exist for publishing the results of research and development in nuclear science and technology Starting for 2010 Atom Indonesia published three times a year in April, August, and December The scope of this journal covers experimental and analytical research in all areas of nuclear science and technology. including nuclear physics, reactor physics, radioactive waste treatment, fuel element development, radioisotopes and radio pharmaceutical engineering, nuclear and radiation safety, neutron scattering, material science and technology, as well as utilization of isotopes and radiation in agriculture, industry, health and environment.
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Articles 5 Documents
Search results for , issue " Vol 31, No 2 (2005): July 2005" : 5 Documents clear
The use of Micronucleus Assay on Swiss-Webster Mice (Mus Musculus) Bone Marrow for the Mutagenicity Test of γ-Irradiation Sofyan, R.; Sumpena, Y.; Lukita, M.; Fitrisari, A.
Atom Indonesia Vol 31, No 2 (2005): July 2005
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (176.005 KB) | DOI: 10.17146/aij.2005.365

Abstract

Ionizing  radiation is a potentially chromosomal damaging agent. The induction of chromosomal damage as well as the incidence of cell cycle disturbances may depend on the dose of irradiation. One of the indication of chromosomal damage is the formation of micronucleus (MN) during the anaphase of mitosis. This study deals with the MN assay on femur bone marrow polychromatic erythrocyte (PCE) cells of  Swiss-Webster mice, for the mutagenicity test of g-irradiation. The study was conducted on five groups of mice (each group consist of five mice) that were irradiated at the doses of 0; 0,2; 0,4; 0,6 and 0,8 Gy respectively. One day after irradiation, the mice were killed by cervical dislocation. Furthermore the femur bone marrow was taken, the cells were then prepared by smear technique onto slides followed by Giemsa staining. The MN in PCE cells or MNPCE were examined microscopically by the magnification of 1000 and counted for every 1000 cells in each mice. The results showed that the MNPCE frequencies on the treatment groups were significantly higher than that of the control (P< 0,05). Further evaluation indicated that the MNPCE frequencies increased with the increase of irradiation dose.
The Influence of Heat Treatment Time and Temperature on the Physical Properties of Assab-Corax Steel Jahja, A.K.; Parikin, Parikin; Effendi, N.
Atom Indonesia Vol 31, No 2 (2005): July 2005
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.666 KB) | DOI: 10.17146/aij.2005.363

Abstract

X-ray diffraction experiment was carried out on commercial Assab-Corax steel sample. The polished samples are then heated to various temperature for different holding time; 200 oC  for 4 hours, 300 oC for 4 hours,  400oC for 6-, 8-, 12- and 16 hours, 500 oC for 4 hours and 600 oC for 4 hours. The refinement of the diffraction intensity was carried out using the Im3m model, and the results show that the Carbon atoms are distributed among the base position in the body centered cubic unit cell at the eight-fold octahedral interstitial sites. Using the refined structural parameters, thermo-physical properties such as Debye temperature and coefficient of thermal expansion are calculated. From the results of the analysis it could be concluded that Debye temperature in Assab-Corrax steels tend to decrease with increasing heat-treatment time but tend to increase with heat treatment temperature. The coefficients of linear expansion also tend to decrease with increasing heat-treatment time and tend to increase with heat treatment temperature. Although the patterns are different, for example when the Debye temperature reaches its peak value for heat treatment time of  8 hours, the coefficient of linear expansion would reach its low point at this time. Therefore, the general finding is that both treatment-temperature and – time are influential to the physical properties of  Assab-Corrax steels and x-ray diffraction methods could be utilized in elucidating these important findings.
Pilot Scale Production of Irradiated Natural Rubber Latex and its Dipping Products Utama, M.; Suhartini, M.; Herwinarni, Herwinarni; Siswanto, Siswanto; Yoharmus, S.; Sundaru, H.; Halik, H.M.; Prayitno, Prayitno; Muklis, H.M.; Ruslim, S.
Atom Indonesia Vol 31, No 2 (2005): July 2005
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (110.111 KB) | DOI: 10.17146/aij.2005.361

Abstract

One hundred and fifty kg natural rubber latex (NRL) before and after concentration were added with 3 phr (part hundred ratio of rubber) normal butyl acrylate, then the mixture were irradiated at 25 kGy by gamma rays of 60Co in pilot scale. The irradiated natural rubber latex (INRL) were then being to use for producing rubber products such as condom, surgical gloves, and spygmomanometer in factory scale. The quality of INRL and rubber products such as : total solid content (TSC), dry rubber content (DRC), KOH, VFA and MST number, tensile strength, modulus, elongation at break, extractable protein content, and response against Type I allergy etc. were evaluated. The economic aspect for producing INRL by means of Gamma Irradiator (GI) and Electron Beam Machine (EBM) such as payback period (PP), net present value (NPV) and internal rate return (IRR) were calculated. The results showed that the latex properties of INRL such as DRC, TSC, KOH, VFA, and MST number are not only found to the requirement of the ISO 2004 standard but also the latex has low protein, lipid, and carbohydrate content. The physical and mechanical properties (tensile strength, modulus, and elongation at break) of rubber dipping products such as condom, gloves, and sphygmomanometer are not only found to the requirement of ISO 4074, ISO 10282, and ANSI/AAMI SP-1994 standards, but also the allergic response tested clinical latex-sensitive protein allergen by ELISA test on gloves, and by SPT test on condom are found to be negative. It indicates that production of INRL or PVNRL or RVNRL by EBM 250 keV/10 mA, was more cheap than by using gamma γ irradiator 200 kCi, or sulfur vulcanization. The value of PBP (payback period) was 2,1 years, NPV (net present value) was 4,250 US $, PI (profitability index) 1,06 and IRR (internal rate of returns) was 25,0%.
Pressure Dependence of Crystal Structure and Ionic Conductivity on Composite Glass (AgI)0.7(AgPO3)0.3 Suminta, S.; Kartini, E.; Mardiyanto, Mardiyanto; Adi, W.A.
Atom Indonesia Vol 31, No 2 (2005): July 2005
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (543.202 KB) | DOI: 10.17146/aij.2005.364

Abstract

The superionic composite glass, (AgI)0.7(AgPO3)0.3 has been succesfully synthesized by melt quenching method. The crystall structure of coin type composite glass at various  pressure of 100, 300 and 700 kg/cm2 have been measured by using an X-ray Difractometer at PTBIN-BATAN. The X-ray difraction pattern shows some Bragg peaks    correspond to the crystaline γ-AgI. The increasing of pressure result the peaks become broaden and shift to the lower angle. This indicates that the crystal size is decreasing and the microstrain is increasing. Three strong peaks at (111), (220) and (311) have been analyzed by using a Gaussian  Fitting. Based on  calculation, crystal size (D) of (AgI)0.7(AgPO3)0.3 at pressures of 100, 300 and 700 kg/cm2 are 1114 Å, 13165 Å and 7240 Å respectively, while  microstrain values (η)  are 4 x 10-3 (1), 7.5 x 10-3 (4) and   8 x 10-3 (4). The composite glass  (AgI)0.7(AgPO3)0.3 crystal structures at pressures of 100, 300 and 700 kg/cm2 have been analyzed by using a Rietveld method.  The refinement results show that the peaks correspond to γ-AgI phase with a symmetry space group F-4 3 m No. 216, FCC, with the lattice constant namely 6.518(3), 6.508(3) and 6.506Ǻ(2) at a pressure of  100, 300 and 700 kg/cm2 respectively.  The increasing of microstrain (η), and crystal size (D) and the decreasing of lattice constant (a) will increase the ionic mobility, thus increasing the ionic conductivity. The function of pressure on melt γ-AgI phase into glass matrix AgPO3 decreases the lattice constant and the crystal size, cause the increasing  of microstrain  broadening and ionic conductivity
Trial Production of Surgical Gloves from Irradiated Natural Rubber Latex on Factory Scale Utama, M.; Herwinarni, Herwinarni; Sumarti, M.; Siswanto, Siswanto; Suharyanto, Suharyanto; Ruslim, S
Atom Indonesia Vol 31, No 2 (2005): July 2005
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (63.894 KB) | DOI: 10.17146/aij.2005.362

Abstract

Trial production of surgical gloves from irradiated natural rubber latex at the PT. Laxindo Utama Serang Banten glove factory has been carried out. The variation of heating temperature and leaching time during processing were evaluated. The physical and mechanical properties and the protein allergen respond of surgical gloves using ELISA method were measured. The results showed that the physical and mechanical of surgical gloves such as tensile strength, modulus, and elongation at break arefound to meet the requirements of the ISO or SNI standard for surgical gloves. While the allergic response through clinical tested latex-sensitive protein allergen known as ELISA test is found to be negative.

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