Cilt:06 Sayı:01 (2019)

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    Forensic Science and the Nigerian Society
    (Ankara Üniversitesi Nükleer Bilimler Enstitüsü, 2019-07) ETİN-OSA, D.; Etin-OSA, C.E.; Other; Other
    As the rate of crime in Nigeria is on the increase with criminals going unpunished due to lack of adequate evidence and eye witnesses, it is imperative to seek an alternative assistance, robust enough to tie criminals to their crimes. Forensic science is the application of science and technology to investigate criminal acts. Application of forensic in combating crime in Nigeria has been underplayed. The aim of this article is to bring to awareness, the importance of forensic science and technology and areas it could be applied in Nigerian to combat crime.
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    Destruction of DNA Through Ultraviolet Radiation (UV-C, UV-B, UVA-2, UVA1) in the Sterilization of Polymer Packaging (ISO: 1043 - PET, LDPE, HDPE) in Fermented Milk Products
    (Ankara Üniversitesi Nükleer Bilimler Enstitüsü, 2019-07-11) Beluli, Valdrin; Kaso, A.; Fizik; Other
    Recently UV radiation in the European Union (EU) is being used almost in many industrial aspects and is replacing chemical substances for sterilization. According to ISO 9001 standard, UV sterilization in polymers, being used as packaging in the dairy industry in fermented products is necessary. UV-C radiation within the spectral region (200-280 nm) is the most suitable for creating DNA defects for the purpose of destruction of hydrogen bond and amine bond between pyrimidine bases and the formation of highly stable covalent bonds in DNA. The quality of food products is one of the biggest challenges in food technology. Researchers have been researching in this field to provide a higher quality to food products in the sterilization of packaging (PET, LDPE, HDPE) from microorganisms, according to ISO1043. During this research it is found that the combination of ultraviolet (UV) and hydrogen peroxide (H2O2) are the strongest guarantors in the destruction of microorganisms and the formation of major defect in DNA.
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    The feasibility of using 3He-3He fuel in a fusion reactor
    (Ankara Üniversitesi Nükleer Bilimler Enstitüsü, 2019) Bahmani, Javad; Other; Other
    The possibilities of using advanced aneutronic fuels such as 3He3He for a clean and efficient fusion power generation are regarded as the most important topics in nuclear engineering. This fuel is completely neutron-free thus, no material activation inside the fusion reactor and no dangerous consequence of accidental radioactive release occurs but it requires high demanding conditions for present-day technology. The investigations show that the radiation power losses are the main problems in the use of this fuel in a fusion reactor. The losses have a principal role in determining the operating temperature of this fuel. The results demonstrate that even under almost optimistic operating conditions, the bremsstrahlung loss power is more than fusion power. To dominate the bremsstrahlung radiation, it would be desired to reduce the electron temperature less than their normal equilibrium values. To improve the performance of 3He3He fusion reactor and to minimize bremsstrahlung and synchrotron radiation, it is essential that the energy transmitted from ions to electrons is minimized. When the electron temperature is low enough, the bremsstrahlung loss is manageable; however, the ionelectron energy transfer rate is very large. The studies indicate that the reduction in the bremsstrahlung power fraction is more useful than the reduction in the ion-electron energy transfer fraction. To restrict he bremsstrahlung power to logical theory level (less than half the fusion power), it is essential to reduce the ion-electron energy transfer rate to the possible minimum in 3He3He fuel.