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Journal of Aceh Physics Society
ISSN : -     EISSN : 23558229     DOI : -
Core Subject : Science,
Focus of Journal of Aceh Physics Society (JAcPS) provides a forum for original paper works that enhances understanding of physics and their application. Scope of Journal of Aceh Physics Society (JAcPS) paper related to the development of new experimental methods, visualization techniques, material physics, optic, laser and instrumentation in physics is an important part of this journal. Experience gained and lessons learned in building test facilities and in measuring and reducing test data are important aspect of any experimental work. Authors are encouraged to report this experience and to summarize the original data. Archival review paper, short communication, invited papers, discussion of previously published papers, and book reviews are regular feature of the journal, in addition to full-length article.
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Articles 5 Documents
Search results for , issue "Volume 3 Number 1, March 2014" : 5 Documents clear
The Influence of the Sun's Position to Changes In Rainfall Patterns in Banda Aceh and Aceh Besar Hulul Fitri; Suhrawardi Ilyas; Fadhli .
Journal of Aceh Physics Society Volume 3 Number 1, March 2014
Publisher : PSI-Aceh

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Abstract

People often perceived that weather pattern is irreguler and unpredictable. Therefore it is necessary to investigate the relationship between position of the sun above earth's surface and the change on rainfall patterns in the region of Banda Aceh and surrounding. Aceh region is located at the tip of Sumatra island and at the perimeter of three major oceans. This location greatly affect rainfall patterns in Banda Aceh and Aceh Besar. The aims of this research are to determine the variation in weather pattern, especially rainfall and to draw up a general pattern of weather oscillation, especially rainfall in the region of Banda Aceh and Aceh Besar. The position of sun relative to Banda Aceh was then visually sketched on a world map. The map is used to analyze relations between rain frequency, duration and time with sun’s position over land and sea, based on the rain pattern condition in six months from Desember 2013 until Mei 2014. The result showed that from Desember until February, rain mostly occured at night and water vapor came from Indian Ocean. Meanwhile in March and May, rain are more common in the morning when the sun’s position was above Indian Ocean and Sea of Bengal. However in April rainfall occur during the day, because of evaporation was brought from the South China Sea.
Estimation of Hydrogen Gas Production from Oxidation Process of Zirconium Cladding with Water Vapor in Fukushima Daiichi Nuclear Power Plant Unit One at Japan after Earthquake and Tsunami in 2011 Endang Lestari; Elin Yusibani; Zulkarnain Jalil; Asril Pramurtadi
Journal of Aceh Physics Society Volume 3 Number 1, March 2014
Publisher : PSI-Aceh

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Abstract

It has been an explosion at the Fukushima Daiichi NPP caused by the fusion reaction between hydrogen and oxygen. Hydrogen is believed to be generated one of which comes from the oxidation reaction between the fuel cladding and water vapor in the reactor core due to the failure of coolant (LOCA=Loos of Coolant Accident). This study aims to estimate the amount of hydrogen gas that accumulates in the reactor core theoretically by using a model based on equilibrium mole of a chemical reaction. The zirconium cladding material is set as a limiting reagent that limits the formation of hydrogen in the reactor core. The estimation results show that the amount of hydrogen accumulated in the reactor is directly proportional to the mass of the oxidized zirconium with water vapor. The amount of hydrogen that accumulates for one fuel rod reaches 0.018 kg, for one assembly is 1.10 kg and for overall at Unit One reaches 441 kg, which these results have been enough to blow up the reactor.
Study of Deposit Cesium-137 (137Cs) Activity as a Result of Fission Product from The Fukushima Daiichi Nuclear Power Plant at Japan after Earthquake and Tsunami in 2011 Rahpita Windriani; Elin Yusibani; Rini Safitri
Journal of Aceh Physics Society Volume 3 Number 1, March 2014
Publisher : PSI-Aceh

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Abstract

Study of deposit Cesium-137 (137Cs) activity as a result of the fission product of Fukushima Daiichi Nuclear Power Plant after earthquake and tsunami in 2011 has been done. The purpose of the present research is to study the deposit 137Cs activity on the land and the Sea of Japan and then to estimate a model of 137Cs distribution on the earth's surface of Japan. The stability of nuclei decay equation is used to obtain a deposit 137Cs activity depending on time, theoretically. The Pasquill-Gifford equation is used to estimate a distribution of 137Cs activity on the earth surface from the original source. The results suggested that Hatachinaka city, the largest measurement point, for about 60 years forward, 137Cs activity levels reach about 54 Bq. In the Sea of Japan at the point of sensor C47, which it has the largest value, the accumulation of deposit 137Cs activity gives about 0.69 Bq at the time of the next 60 years. For the distribution of 137Cs activity, the concentration values at a distance of 200 m from the original source obtained maximum for all case.
Analysis of Electrical and Thermal Conductivities of blended Clamshell Powder, Kaolin and CuO Ceramics Nurzahziani .; suhrawardi Ilyas; Zulfalina .
Journal of Aceh Physics Society Volume 3 Number 1, March 2014
Publisher : PSI-Aceh

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Abstract

The electrical and thermal analysis of blended clamshells powder, kaolin, and CuO ceramics have beenconducted. Clamshell is used in the experimentation due to its high CaCO3 that is about 96-98%. Theresearch is aimed to analyze the effect of CuO addition on clamshell powder-and-kaolin mixed ceramics andto observe the electrical and thermal properties of its. CuO concentration was varied up to 10% (weight).We found that the samples could not set and directly disintegrate under the exposure to cold air when baked at temperature higher then 600°C. 8% addition of CuO to white shell gave a more stable sample and recorded 2,17 x 10-7 S/cm electrical conductivity and 0,9977 W/m°C thermal conductivity. There was a trend that those two conductivities are increasing over a large CuO concentration and kept increasing. Based ongeneral classification, this sample is considered to be semiconductor and its thermal conductivity is larger than glass. Semiconductors are very important in electronic manufacturing sector and this material shows the capability of tailoring its conductance. XRD analysis tells that CuCO3bonding has been initiated in the mixture.
The Method of CT Dosimetry Based on the CTDI (Computed Tomography Dose Index) for the Treatment of the Human's Head Rini Safitri; Nurmalita .
Journal of Aceh Physics Society Volume 3 Number 1, March 2014
Publisher : PSI-Aceh

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Abstract

The method of CT dosimetry based on the CTDI is a common measurement method by using a single, axial rotation about a pencil chamber in a stationary phantom. For some time now there has been a growing awareness that radiation dose originating from medical diagnostic procedures in radiology, is contributing an increasing proportion to the total population dose, with a large component coming from CT examinations. This is accompanied by rapid developments in CT technology, including the use of increasingly wide X ray scanning beams, which are presenting problems in dosimetry that currently cannot be adequately addressed by existing standards. When preparing any dosimetric assessment of a CT scanner it is essential to have a good knowledge of the production of X rays and the characteristics of the CT scanner. Factors that influence the X ray beam intensity and photon spectrum are the tube voltage, the anode material, and anode angle, the filtration of the X ray tube, and the tube current. The properties of the radiation field for CT dose considerations can be characterized by free in air measurements of air kerma (absorbed dose in air). Measurements in standard cylindrical phantoms yield dosimetric quantities such as CTDI that can be considered as a patient dose index, and are also useful for quality assurance purposes, however they should not be interpreted as patient dose.

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