نتایج جستجو برای: natural radioactivity hazard

تعداد نتایج: 552402  

The present paper has determined the radioactivity concentrations, which are due to natural occurrence of radionuclides along with heavy metal concentration in water, sediment, and fish from 2 reservoirs in Ghana. Heavy metal concentrations in all samples were generally within the WHO safe limits with the average activity concentrations of 238U, 232Th, and 40K in water being respectively 0.42±0...

Introduction: There are natural and artificial radioactive nuclei in our environment, as well as in the structure of the living organism. Currently, industrial and municipal pollution has also an impact on increasing the level of radiation. The present study investigated the effect of inlet water from Arak Wastewater Treatment Plant on international Meighan Wetland and...

Journal: :iranian journal of radiation research 0
o.s. ajayi department of physics, federal university of technology ,p.m.b 704, akure, ondo state, nigeria g. adesida department of physics, federal university of technology ,p.m.b 704, akure, ondo state, nigeria

background: activity concentrations of 40k, 226ra and 228ra were measured in some sachet drinking water samples produced in nigeria. materials and methods: the measurement was done by using high-purity germanium (hpge) detector (canberra industries inc.). the measured activity concentrations for 226ra (u-series) and 228ra (thseries) were used with their ingested dose conversion factors to estim...

Journal: :iranian journal of radiation research 0
i.r. ajayi department of physics and electronics, adekunle ajasin university, akungba-akoko, nigeria

background: the equivalent dose in the human body due to the natural gamma-emitting radionucides (238u, 232th and 40k) in the surface soil surrounding the consolidated tin mine site in bukuru-jos, nigeria has been determined in this study. materials and methods: measurements of the soil natural radioactivity were made using a multi-channel pulseheight analyzer (canberra series 10 plus) coupled ...

Journal: :journal of biomedical physics and engineering 0
f. saghatchi department of radiology, faculty of paramedical and health, zanjan university of medical sciences, zanjan, iran m. salouti department of biology, faculty of sciences, zanjan branch, islamic azad university, zanjan, iran

background: many radioactive compounds may be released into the environment and hence into the drinking water supplies due to the human activities. radionuclides can also enter the food chain if the contaminated water is used for drinking or irrigation purposes. objective: to estimate the annual effective dose of natural radioactive materials like 226ra and 40k in drinking water of wells in zan...

Journal: :Environmental Earth Sciences 2021

Abstract This study reports the natural radioactivity of characteristic rocks found in historic Jeroným Mine Czech Republic as measured under laboratory conditions. The analyzed included granites and schists weathered to varying degrees collected from different levels underground workings Mine. mine itself has been subject metal extraction (mainly tin tungsten) since sixteenth century recently ...

Journal: :ARO. The Scientific Journal of Koya University 2023

The fundamental goal of this study is to measure the level radioactivity in soil area around Al-Hadbaa cement plant, also evaluate radiological hazard radionuclide, gamma-spectroscopy with an HPGe detector crystal diameter 70.6 mm and length 70 has been used estimate specific activity natural radionuclides 226Ra, 232Th, 40K, artificial 137Cs fifteen samples collected. results show that average ...

Journal: :IOP conference series 2021

Abstract Radioactivity, whether natural or artificial, today constitutes a significant segment in the process of protecting human and animal health. Natural radioactivity is an integral part our ecological system, so it has long been present food we eat. However, intensive industrial processes some areas have disturbed balance thus introduced into environment radionuclides quantities that can a...

Introduction: Natural radioactivity in the soil is considered a major indicator of radiological contamination. Primordial radionuclides are the main source of natural radioactivity. Natural radioactivity transfers radionuclides into the environment and poses radiation hazards to people's health. Therefore, the present study aimed to determine the radon concentration an...

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