نتایج جستجو برای: 232th and 40k

تعداد نتایج: 16827271  

Journal: :Journal of Marine Science and Engineering 2022

Marine sediment samples were collected along the Jeddah coast, Red Sea, Saudi Arabia, in order to assess radiation hazards and exposure human marine living organisms. Using collaborative techniques, grain size, mineralogical characteristics, natural radioactivity investigated. To examine influence of characteristics over distribution measured radionuclides, resulting data statistically processe...

Journal: :Hydrobiology 2022

The concentrations of 29 elements in the soft tissues and 24 shells mussels (Mytilus galloprovincialis) collected one selected recreational two relatively polluted zones were determined are presented. high levels from a zone harbor (Kamyshovaya Bay) could be associated with phytoplankton, terrigenous matter anthropogenic sources, but did not harm mussel population, according to calculated avera...

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...

N.M. Manikandan, P.K. Manigandan,

Background: A study on the migration characteristics of 238U, 210Po, 232Th and 40K within the soil to the wild plants in the Western Ghats were carried out. Materials and Methods: Concentrations of these radionuclides were measured in different depths of soil and from different species by employing gamma ray spectrometer and alpha counter. Results: The activity concentration of these r...

Journal: :iranian journal of radiation research 0
n.n. jibiri radiation and health physics research laboratory, department of physics, university of ibadan, ibadan, nigeria p.e. biere radiation and health physics research laboratory, department of physics, university of ibadan, ibadan, nigeria

background: presently, the british-american tobacco company (bat) located in ibadan, oyo state is the only tobacco producing company in nigeria accounting for about nine different brands of cigarette tobacco smoked in the country. the tobacco leaves are produced from some farmlands located in oke-ogun area of ibadan where special fertilizers are used for the growing of the tobacco leaves. the u...

Journal: :Radiation 2022

Nkamouna-Kongo is a cobalt–nickel deposit located in Lomié, Eastern Cameroon. Mining creates radiation exposure pathways that must be considered risk management scenarios. RESRAD-ONSITE and RESRAD-BIOTA, developed by the US DOE, assess contaminated sites deriving cleanup criteria estimating dose associated with residual radioactive materials using site-specific parameters. This paper evaluated ...

A. Begum, A. Islam, J. Ferdous,

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 ...

Journal: :Nuclear Instruments and Methods in Physics Research 2021

In this work we present a method for the direct determination of contaminant fallout rates on material surfaces from exposure to dust. Naturally occurring radionuclides 40K, 232Th, 238U and stable Pb were investigated. Until now, background contributions dust particulate have largely been estimated models assumed composition. Our utilizes variety low collection media in locations interest, foll...

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