نتایج جستجو برای: natural radioactivity

تعداد نتایج: 491154  

Journal: :Proceedings of the National Academy of Sciences 2002

Journal: :Bulletin of the Geological Society of Greece 2017

E. Uzun , M.E. Korkmaz, O. Agar,

Background:The natural radioactivity levels in soil samples of Karadağ Mountain in central Anatolia region have been determined. Materials and Methods: Analyses on the collected samples were performed to determine gross alpha and beta radioactivity concentrations by using a gas-flow proportional counter and the concentrations of 238U, 232Th and 40K by using a NaI(Tl) scintillation detector. Res...

Journal: :Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 1961

Journal: :Journal of Research of the National Institute of Standards and Technology 2017

Journal: :Progress in Biophysics and Biophysical Chemistry 1961

حاجی علیانی, گلزاده, مستجاب الدعواتی, ، سید مجتبی , نصری نصرآبادی, مهدی,

Geographical features of each region of the world affect the activity concentration of natural radionuclides such as uranium, thorium and potassium. In this study, 26 soil samples were randomly collected from sides of the Dez River and transferred to the Laboratory for preparation. Activity concentration of natural radioactive materials was measured using p-type HPGe detector with a 38% relativ...

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