نتایج جستجو برای: the radionuclides 226ra
تعداد نتایج: 16053524 فیلتر نتایج به سال:
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 ...
Groundwater quality constantly evolves through rock–water interactions, which can enrich groundwater with undesirable elements such as naturally occurring radionuclides. The aim of this study was to understand the cause gross alpha activity exceeding screening value 0.1 Bq L−1 measured in groundwater-derived drinking water vicinity a metamorphic outcrop Hungary. As is strongly dependent on prop...
The study of the properties blast-furnace slags requires an integrated approach, including various research methods. purpose work is to substantiate resource value Zaporizhstal dump blast furnace slag. methods were used: X-ray phase, petrographic, gamma-spectrometric analysis and electron probe microanalysis. slag dispersed into fractions, since minerals have different hardness. Fractions (mm) ...
Background: There is a rapid increase worldwide in the consumption of mineral waters which may contain different level of radioactive elements, especially 226Ra, in addition to varying amounts of beneficial salts. Therefore, a comprehensive study was planned and carried out in order to determine concentration of 226Ra natural radionuclide in bottled mineral waters that commercially available in...
Background: Natural radioactivity in materials under certain conditions can reach the hazardous radiological levels. So, it becomes necessary to study the natural radioactivity in different materials to assess the dose for the population in order to know the health risks and to have a baseline for future changes in the environmental radioactivity due to human activities. Materials and ...
In urban areas, forest patches and parks are usually the places where people spend most of their time outdoors. Because poor environmental protection policy insufficient investment in industry energy, Serbia is often ranked among European countries with greatest pollution. recent years, ecological protests have been organized throughout country aim raising awareness resolving issues. The topic ...
To obtain high quality of results in gamma spectrometry, it is necessary to select the best HPGe detector for particular measurements, to calibrate energy and efficiency of gamma detector as accurate as possible. To achieve this aim, the convenient detector model and gamma source can be very useful. The purpose of this study was to evaluate the soil specific activity using two HPGe model (BEGe-...
Measurements of natural radionuclide (NORMs) and artificial in airborne particulates obtained from around prospective site area Nuclear Power Plant (NPP), West Kalimantan, Bengkayang have been carried out. In the NPP development plan, data potential sites should be measured to determine baseline environmental data. The objective research was obtain ambient air quality radiological aspects gamma...
The paper describes dosimetric models that allow the estimation of average radiation exposures to terrestrial biota due to environmental sources in the soil as well as internal uniform distributions of radionuclides. Simple three-dimensional phantoms for 13 faunal reference organisms are specified. The calculation of absorbed dose per unit source strength for these targets is based on photon an...
The approach taken in the WHO Guidelines for controlling radiological hazards public water supplies has two stages. first is an initial screening gross alpha and beta activity to determine whether concentrations are below levels at which no further action required; if these exceeded, investigation of concentration individual radionuclides comparison with specific guidance levels. Mineral obtain...
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