Background: The sources of radioactivity in the environment have natural, terrestrial and extraterrestrial, and anthropogenic origins. Plants may get radioactive nuclides in two ways: (i) by the deposition of radioactive fallout, (ii) by absorption from the soil. Materials and Methods: The Concentrations of the natural radionuclides (226Ra, 228Ra, 40K) and the artificial radionuclide (...

Residuals from coal combustion are known as a potential source of radiation exposure, especially in cases where the used is characterized by increased radioactivity, resulting ash and slag with potentially high activity concentration radionuclides. This paper presents results radiological risk assessments based on ERICA Tool approach, to estimate dose rates terrestrial biota proximity fired the...

the biliary excretion and blood/plasma ratios of four novel 5-bromo-6-alkoxy- 5,6-dihydro prodrugs to s-ethyl-2'-deoxyuridine (edu) including (-)-trans-(5s, 6s)-s-bromo-s-ethyl-6-methoxy-s, 6-dihydro-2'-deoxyuridine (bmedu), (+ )-trans( sr, 6r)-s-bromo-s-ethyl-6-ethoxy-s, 6-deoxyuridine (beedu), (+ )-trans-(sr, 6r)-5-bromo-5-ethyl-6-ethoxy -s, 6-dihydro-s '-o-valeryl-2 ':.de...

introduction: one of the sources of natural occurring radiation was soils. the purpose of article was to determine soil pollution by radiation absorbed dose rate, radium equivalent activity, external hazard index, annual gonad dose equivalent and annual effective dose equivalent. methods & materials: the soil samples was located in chahbahar city in blouchestan of iran, was chosen for studying ...

background: the concentrations and distributions of natural and anthropogenic radioactive materials in soils of the site of rooppur nuclear power plant (rnpp) were investigated with the aim of evaluating the environmental radioactivity and radiation hazard. materials and methods: soil samples were collected from 40 locations in and around the proposed site of rooppur power plant and determined ...