Cilt:07 Sayı:02 (2020)

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https://dspace.ankara.edu.tr/handle/20.500.12575/83145

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    Indoor Radon Levels and Contributory Factors in Southwest Nigeria
    (Ankara Üniversitesi Nükleer Bilimler Enstitüsü, 2022) ASERE, Adeola; AJAYİ, Isaac; ; Other; Mühendislik Fakültesi
    Radon-222 has been found to be the main contributor to lung cancer after smoking. This make the determination of the level of indoor radon activity concentration in dwellings an important health issue. This research was conducted to measure radon concentrations using alpha track detectors in dwellings in selected area in Ondo State, Southwest Nigeria. Detectors were exposed in the area for 90 days period. Radon concentration was related to the age of buildings, ventilation status, heating source and materials used for construction. Likewise, radiological health indices was calculated. Results showed that old buildings built with mud blocks and poorly ventilated had higher radon concentration than modern buildings built with cement blocks with good ventilation. Homes using natural gas had higher radon concentration than homes using charcoal and fire wood as cooking source. The average annual effective dose and other calculated radiological indices does not exceed the recommended limit. This shows that most of the dwellings in the area are safe for dwelling purposes.
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    Theoretical molecular mechanisms and long-life of the SARS-CoV-2 on the phone screen. Electronegativity between crystal liquid atoms and SARS-CoV-2 Spike protein
    (Ankara Üniversitesi Nükleer Bilimler Enstitüsü, 2020) Daku, Egzon; Beluli, Valdrin; ; Other; Mühendislik Fakültesi
    The world today is being attacked by a global pandemic of the SARS-CoV-2 virus that is taking many lives from our society. Many mechanisms of SARS-CoV-2 are still not well explained by scientific researchers in experimental medicine. Identifying sources of SARS-CoV-2 infection is extremely important to save lives from this pandemic. SARS-CoV-2 is one of the most problematic and challenging viruses for global health. We as scientific researchers have built a sustainable scientific mechanism for the life of the SARS-CoV-2 finder on mobile phone screens. SARS-CoV-2 has a powerful ability to stay on the screen for 28 days in temperature of 20°C and we have managed to conclude that the reason why SARS-CoV-2 has this long-life on the screens is due to Nitrogen (N) atoms in crystalline liquid (4-Cyano-4'-pentylbiphenyl) as well as atoms of Nitrogen (N), Carbon (C) and Hydrogen (H) in SARS-CoV-2 Spike. Between these atoms occurs the effect of electronegativity between N of the crystalline liquid and C, H and N in Spike and this enables the virus to have a long-life, so electronegativity plays a key role in the non-dissociation of SARS-CoV-2 from the phone screen.