نتایج جستجو برای: natural radioactivity hazard

تعداد نتایج: 552402  

Journal: :Gazi university journal of science 2023

Transfer of metals from soil to plant is an important pathway human exposure environmental contaminants. In this study accumulation different was investigated and natural radioactivity levels were measured in the soil–thyme system. Results showed that concentration Br, Cr, Mn, Ni, Pb higher than World average value, P, Ca, Zn have transfer factors. The level soils similar average. For thyme sam...

Journal: :Miscellanea Geographica - Regional Studies on Development 2014

F. Korkmaz Görür, İ Alp, N.T. Okumusoğlu, R. Keser,

Background: The radioactivity levels in sediment and rock samples of İkizdere and Kaptanpaşa Valley have been determined. To our knowledge, there seems to be no information about radioactivity level in the İkizdere and Kaptanpaşa Valley sediments and rocks so far. Materials and Methods: The average radium equivalent activity (Raeq), the total absorbed dose rate (D), the external risk index (Hex...

Introduction Artificial and natural radionuclides are found in diverse environmental compartments, such as water, soil, rocks, vegetables, animals, and human body tissues. As such, humans and environments are at constant exposure of these radiation types. In this research investigated specific activities of radionuclide and dose assessment of some species of mushrooms. Materials and Methods In ...

2015
Xin Wang Qiyan Feng Ruoyu Sun Guijian Liu Shifeng Dai Mostafa Fayek

The naturally occurring primordial radionuclides in coals might exhibit high radioactivity, and can be exported to the surrounding environment during coal combustion. In this study, nine coal samples were collected from eastern Yunnan coal deposits, China, aiming at characterizing the overall radioactivity of some typical nuclides (i.e., 40K, 238U, 232Th, 226Ra) and assessing their ecological i...

Journal: :International Journal of Low Radiation 2019

Journal: :Japanese Journal of Health Physics 2009

2016
S. Fares

The level of natural radioactivity in black sand and sediment samples collected from Temsah Lake beaches of the Suez Canal district, Egypt were investigated. The natural activity concentration of Ra, U, Th and K for 20 black sand and 20 sediment samples were determined using gamma spectrometers based on HPGe detector with low background gamma-ray counting system. For assessing the environmental...

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