Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Natural radioactivity"”.
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Natural radioactivity in soils of the Walvis Bay - Henties Bay coastal area, Namibia
Naturally occurring radionuclides such as 238U, 232Th and 40K are present in the soil where they disintegrate spontaneously releasing ionizing radiation which could pose health hazards to the inhabitants of a given location especially when the concentrations of the radionuclides are high. In …
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Characterisation of natural radioactivity in Karoo Basin groundwater prior to shale gas exploration
… has created the need to obtain baseline data on natural radioactivity in Karoo groundwaters. The Karoo Basin groundwater radiological baseline developed through this study could serve as a reference to research potential future radiological contamination effects due to hydraulic fracturing. The …
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An evaluation of the natural radioactivity in the soils of Okahandja and Karibib, Namibia
The natural radioactivity and associated hazards in the soils of the towns of Karibib and Okahandja have been studied by gamma spectroscopy. Each town was divided into ten geographical areas and five soil samples were collected across each area. These samples were processed and placed in …
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Assessment of natural radioactivity in the soils of the Ohorongo Cement plant and the town of Otavi, Namibia
The activity concentrations of the naturally occurring radionuclides 238U, 232Th, and 40K in soil samples collected from the Ohorongo Cement plant and the town of Otavi, Namibia have been determined using a High-Purity Germanium (HPGe) detector. In addition, an assessment of the radiological …
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An experimental determination of the homogeneous nucleation rate of water vapor in argon and helium
… they may be a neutral product of the action of natural radioactivity and cosmic rays. A semiphenomenological theory was developed along the lines of the classical theory but which includes the chemical bond energy of the heterogeneous nucleating center. The theory predicts a different …
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Radionuclide concentrations and radiation hazard assessment in the soil of Otjiwarongo, Namibia
The natural radioactivity and associated hazards in soil samples collected from the town of Otjiwarongo, Namibia, have been studied by gamma ray spectroscopy. The town was divided into ten geographical areas and five soil samples were collected across each area. The samples were dried, homogenized …
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Levantamento dos níveis de radioatividade natural no estuário do complexo industrial de Suape no estado de Pernambuco
… a formação do “TENORM” (Technologically Enhanced Naturally Ocurring Radioactive Material). Assim, o objetivo principal deste estudo foi avaliar as concentrações do 238U, 226Ra, 232Th, 40K e 210Pb em amostras de solos, sedimentos, peixes e folhas de mangue coletadas no percurso dos rios Ipojuca …