Konferans 2010-2019 yılları
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Browsing Konferans 2010-2019 yılları by Publisher "IAEA"
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Item Accelerator based fast radiography system for the non destructive analysis and some applications in Turkey(IAEA, 2014-07-23) Bıyık, Recep; Kam, Erol; 0000-0001-7929-4395; TAEK-ÇNAEMDifferent radiography imaging techniques such as x, gamma and neutron grapy are well established techniques for the nondestructive testing (NDT) of materials. But Fast Neutron Radiography (FNR) is relatively new and is being developed. Using this technique all materials such as high density metals, loaded plastics, cadmium, lead, tungsten, concrete etc. can be analyzed. Compare to the other techniques fast neutrons enable non-destructive testing of thicker object The FNR studies were initiated in Turkey at 2007. The aim of this project was to set up a portable fast neutron radiography (FNR) system and to test it for use in nondestructive testing of different composite materials. In the fast neutron radiography systems accelerator based neutron generators are used which requires a particle accelerator and a target. Proton or deuteron beam is accelerated to the desired energy and bombards the target material to produce fast neutrons by a nuclear reaction. DT neutron source was used fusion of a deuterium and a tritium atom (D + T) results in the formation of a He-4 ion and a neutron with a kinetic energy of approximately 14.1 MeV. In this study we have only demonstrated a portable digital fast neutron radiography system and some images of the different composite materials to show efficiency. Experiments were carried out by using fast portative neutron generator Thermo Fischer MP320 and Low Energy Ion Accelerator Sames T400 at Çekmece Nuclear Research and Training Centre.Item Gamma irradiation of pulses for quality maintenance and introducing food irradiation technology to producers and inspectors(IAEA, 2014-11) Aylangan, Ayça; İç, Erhan; Özyardımcı, Berna; TAEK-SANAEMPulses such as chickpea (Cicer arietinum L.), lentil (Lens culinaris Med), kidney bean (Phaseolus vulgaris L.), pea (Pisum satinum L.) and cowpea (Vigna unguiculata L. Walp) are a cheap and critical source of plant-based protein and consumed in large quantities in Turkey. 772 thousand hectares of the total sown area in Turkey is utilized for pulses. Turkey had produced 1.2 thousand tons pulses in 2012. Generally, post-harvest losses in pulses (20 – 25 %) mostly are aroused from transportation and storage pest of food in the world. Over the centuries, efforts have been made to control storage losses and maintain the quality of foods. Food irradiation is an effective post-harvest technology as alternative to fumigation for reducing stored product losses. Our study was conceived to evaluate, using High Performance Liquid Chromatography (HPLC), the effects of combined gamma irradiation (0.25, 0.50 and 1.0 kGy) and storage time on chickpea, kidney bean and green lentil. Total carotenoids, B vitamins (riboflavin and thiamine), oligosaccharides (raffinose and stachyose) and sensory properties were analyzed after the irradiation in 0, 6 and 12 months at during the storage time. The differences bound up in irradiation dose are significant in total carotene results on green lentil samples. The results indicated that non-significant losses in thiamine and riboflavin concentrations for the analyzed samples at three different irradiation dose In contrast, storage time affected significantly (p<0.05) the thiamine and riboflavin concentrations of samples. While effect of storage period was found significant on raffinose and stachyose contents there was not seen any significant changes conditional upon applied irradiation doses. Applied irradiation doses could not be separate from unirradiated samples by panelists as a result of sensory evaluation. The United Nations has declared 2016 as “International Year of Pulses” in the world. The main objective of this initiative would be to raise awareness of the contribution of pulses to food security. Irradiation appears to be superior to other alternatives on the basis of quality maintenance. This data will be useful for the pulse industries in both domestic and international pulses markets, which can use radiation processing as a final step of production in order to make their product safe for direct consumption. In order to make clear irradiation technology as an effective alternative in insect disinfestation of pulses to producers and related investors. We organized a seminar entitled ‘Using food irradiation technology in pulses’ in collaboration with the Istanbul Chamber of Commerce in the May 2011 in Turkey. The event was attended by at least 60 pulse producers, private sector representatives, research institute specialist. Futhermore, we participated in the meeting organized by Rebublic of Turkey Ministry of Food, Agriculture and Livestock including over 150 inspectors and regulators in the November 2012. The meeting discussed the phytosanitary (quarantine) irradiation of pulses as an alternative to fumigation, effects of pulses, cost of irradiated food, national and international regulations about phytosanitary treatments.Item The syllabus on fundamental radiation protection courses for radiologists in Turkey, (2011-2013)(IAEA, 2014-12) Zeyrek, C. Tuğrul; Akbıyık, Hayri; TAEK-ANAEMWe aimed to describe the Turkish experience in radiation protection (RP) and communicate our experience in the organization of RP training courses for radiologists. The courses provided theoretical and practical knowledge on RP on the basis of scientific and technical recommendations from The International Commission on Radiological Protection (ICRP), The Council Directive 97/43/EURATOM and the International Atomic Energy Agency (IAEA). Courses were organized by the Ankara Nuclear Research and Training Center (ANAEM), a branch of Turkish Atomic Energy Agency aimed at providing specialized RP education for radiologists, medical doctors, technicians, physicians, and radiation workers. The courses were presented as five-day seminars by a group of instructors composed of a physicist, radiation biologists, RP experts, and medical physicists. The implemented RP training programs were effective and efficient according to the overall assessments obtained by the ANAEM. Similar training programs can be organized for cardiologists and other medical practitioners conducting interventional procedures by institutions and organizations in accordance with the Turkish RP regulations. To this end, we suggest that RP training courses should be accredited and sustained at the national level.