http://ajstd.org/index.php/ajstd/issue/feed ASEAN Journal on Science and Technology for Development 2019-05-13T13:48:42+07:00 Widodo ajstd.journal@gmail.com Open Journal Systems <h2>About the <em>ASEAN Journal on Science &amp; Technology for Development</em></h2> <p style="font-weight: 300; font-size: 1.01rem;">Jointly published by the ASEAN Committee on Science and Technology and the Ministry of Research, Technology, and Higher Education of the Republic of Indonesia, the <em>ASEAN Journal on Science &amp; Technology for Development</em> (print ISSN 0217-5460; online ISSN 2224-9028) is a peer-reviewed open access journal focusing on the publication of articles that make positive, tangible contributions to science and technology in the ASEAN region. Its main aim is to promote andGoogle Scholar, ID Scopus, ResearchGate, Orcid), accelerate the discovery and ultimate ASEAN-wide application of scientific and technological innovations, the consequence of which should be greater prosperity for the people of Southeast Asia.</p> <p style="font-weight: 300; font-size: 1.01rem;">AJSTD covers a wide range of technology-related subjects in the context of ASEAN, including biotechnology, non-conventional energy research, materials science and technology, marine sciences, meteorology and geophysics, food science and technology, microelectronics and information technology, space applications, science and technology policy, and infrastructure and resources development.</p> <h2>About The ASEAN Committee on Science and Technology</h2> <p style="font-weight: 300; font-size: 1.01rem;">The ASEAN Committee on Science and Technology was established to strengthen and enhance the capability of ASEAN in science and technology so that it can promote economic development and help achieve a high quality of life for its people. Its terms and reference are:</p> <ul class="asean-terms" style="font-weight: 300; font-size: 1.01rem;"> <li class="show">To generate and promote development of scientific and technological expertise and manpower in the ASEAN region;</li> <li class="show">To facilite and accelerate the transfer of scientific and technological development among ASEAN countries and from more advanced regions of the world to the ASEAN region;</li> <li class="show">To provide support and assistance in the development and application of research discoveries and technological practices of endogenous origin for the common good, and in the more effective use of natural resources available in the ASEAN region and in general; and</li> <li class="show">To provide scientific and technological support towards the implementation of existing and future ASEAN projects.</li> </ul> <p style="font-weight: 300; font-size: 1.01rem;">Further information about the activities of ASEAN COST can be <a class="border-hover" href="http://astnet.asean.org/index.php?option=com_content&amp;view=categories&amp;id=8&amp;Itemid=130" target="_blank" rel="noopener">found on its website</a>.</p> http://ajstd.org/index.php/ajstd/article/view/525 Rockwell Hardness Testing on Pure Nickel Collimator for BNCT Application 2019-05-13T13:02:40+07:00 Erasmus Prakasita erasmus@ajstd.org Yohanes Sardjono erasmus@ajstd.org Budi Setyahandana erasmus@ajstd.org <p>In this study, Rockwell Hardness Testing is used for material hardness examination. Rockwell's hardness testing was chosen in this method because easy to perform, Relatively inexpensive, non-destructive, Finished parts can be tested but not ruined, virtually any size and shape can be tested, This examination will identify and compare the characteristics of nickel porosity before and after centrifugal casting&nbsp; through hardness testing in order to discover the 99% porosity of the element of nickel in Boron Neutron Capture Therapy (BNCT). The component used in BNCT is a cylindrical shape and was created in centrifugal casting method. The method used in this project is hardness testing.</p> 2019-05-13T11:24:38+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/519 Beams characteristic in water phantom irradiation by epithermal neutron beam from double layer beam shaping assembly 2019-05-13T13:02:40+07:00 Bilalodin Bilalodin bilalodin.unsoed@gmail.com Kusminarto Kusminarto pradiastuti_sari@ugm.ac.id Arief Hermanto Hermanto pradiastuti_sari@ugm.ac.id Yohannes Sardjono pradiastuti_sari@ugm.ac.id Rasito Rasito pradiastuti_sari@ugm.ac.id <p>A Double Layer Beam Shaping Assembly (DLBSA) is designed to produce epithermal neutrons for BNCT purposes. The MCNPX program is utilized as the software to design the DLBSA and phantom. Distribution of epithermal neutron and gamma flux in the DLBSA and phantom and absorbed dose in the phantom are computed using the Particle and Heavy Ion Transport System (PHITS) program. Testing results of epithermal neutron beams irradiation on water phantom shows that epithermal neutrons are thermalized and penetrate the phantom up to 12 cm in depth. Maximum value of absorbed dose is 2 x 10<sup>-3</sup> Gy at a depth of 2 cm in the phantom.</p> 2019-05-13T11:26:23+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/513 X-RAY Radiography on Reflector Collimator for Boron Neutron Capture Therapy Component 2019-05-13T13:48:42+07:00 Y. Sardjono andriputrakesmawan@gmail.com Ricky Fajar Adiputra andriputrakesmawan@gmail.com Budi S andriputrakesmawan@gmail.com <p style="text-align: justify;">Boron neutron capture therapy (BNCT) is a targeted radiotherapy technique developed to treat patients with selected malignant tumors without any side effects. The collimator is an important component used in BNCT. In this research, the collimator is made by centrifugal casting processes which can cause any defect. The purpose of the research is to detect any defect in a collimator made by 99% pure nickel with Neutron Radiography and processing with MNCP5 for imaging the defect. The expected result of this research is displayed in an image of the defect caused by centrifugal casting in collimator.</p> 2019-05-13T00:00:00+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/528 Potential analysis of concrete as neutron radiation shielding material for bnct facility 2019-05-13T13:08:31+07:00 Rini Murtafiatin rinimurtafiatin@ajstd.org Widarto Widarto rinimurtafiatin@ajstd.org Argo Satrio rinimurtafiatin@ajstd.org Susilo Susilo rinimurtafiatin@ajstd.org Ngurah Made Dharma Putra rinimurtafiatin@ajstd.org <p>PSTA-BATAN has barite concretes to be analyzed by the attenuation coefficient to find out its potential as neutron radiation shielding material for BNCT development. The experiment used PuBe as the neutron source and HPGe as the neutron detector. The result exhibitsed that barite concrete with 2.13 g.cm-1 of density has 0.0871 cm-1 of the coefficient of neutron attenuation so that barite concrete has potential as neutron radiation shielding material.</p> 2019-05-13T00:00:00+07:00 ##submission.copyrightStatement##