نتایج جستجو برای: natural radioactivity hazard

تعداد نتایج: 552402  

2014
M. M. Ahmed S. K. Das M. A. Haydar M. M. H. Bhuiyan M. I. Ali D. Paul

The radionuclide contents and their activity concentrations in beach sand, sediment and adjacent soil samples collected from Inani sea beach, Cox’s Bazar, Bangladesh were determined by using a high resolution germanium detector (HPGe) of 20% relative efficiency. A total of eighteen samples of three categories were collected and analysed. The activity concentrations of Ra, Th and K in the sand s...

Introduction: The risk of radioactivity addresses human life directly. The natural rock radioactivity is mainly due to 232Th, 238U), and 40K series. Activities involving blasting, crushing, and processing of rocks into numerous pieces lead to release of radionuclides into the atmosphere in the form of dust particles. M...

E. Ehsanpour H. Bagheri M. Mostajaboddavati M.R. Abdi

This study was conducted to determine the radioactivity concentration in soil samples of Anarak-Khour district located at central Iran. 48 soil samples from a depth of 10-15 cm were taken from seven different sites for monitoring. The radioactivity concentration of 238U, 232Th, 137Cs and 40K in soil samples was determined, using a high resolution (HPGe detector, p-type) γ-spectrometry by detect...

Journal: :Sustainability 2022

High-level natural radioactivity, geochemical, geological, and radiological hazard assessment of the poorly investigated Wadi Gebeiy Dokhan volcanics rocks are discussed. located in Southwestern Sinai, Egypt, covering an area ~1.3 km2. represented by porphyritic dacite. Geochemically, they have medium-k characters originate from calc-alkaline magma within a arc environment. Along fault plane st...

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...

Background: The activity concentrations of natural radionuclides in soil around a coal-fired thermal power plant of northwest China were investigated for assessing the radioactivity level. Materials and Methods: Soil samples were collected around the coal-fired thermal power plant and their radioactivity levels were determined using gamma ray spectrometry. Radiation hazards were assessed by rad...

Journal: :Atmosphere 2021

Radioactivity in Granites of Pakistan systematically increases from south to north. The Ambella Granite found at the northern edge is highly radioactive. measurements made on, so called, Bajaur Granite, located Pakistan, have been be lowest among all granitic rock area. In order find out exact nature rocks, mineralogical studies were carried on chips and powdered samples. Norite contains plagio...

Reza Pourimani Zahra Nemati

The activity concentrations of 235U, 232Th, 226Ra, 40K and 137Cs in ground and surface of drinking water resources in Iranian city of Arak were determined by gamma ray spectrometry with aHPGe detector setup, coaxial p type and 8192 channels MCA. The water samples differed in radioactivity content depending on their origin and place. In the ...

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