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Radioactivity of the rock and the environment in selected underground areas and its impact on human health
Thinová, Lenka ; Matolín, Milan (advisor) ; Holý, Karel (referee) ; Neznal, Martin (referee)
The thesis is focused on measurement and assessment of absorbed doses of radiation in caves of the Czech Republic, out of which some exhibit high activity concentration of radon in air. This thesis presents an analysis and recommendations based on measurement results obtained in the underground caves over the past 10 years. The focus is on defining the sources of irradiation within the cave environment (and in areas used for speleotherapy), considering their potential health effect, including the variable dependence of external and internal irradiation influences. All of the measurements had as an objective to verify, and where possible improve, the existing methodology for assessing and calculating the dose from radon in underground spaces. The main issue that had to be resolved was whether a numerically specified cave factor value is applicable to all underground areas. The research measurements were carried out in all available show caves and in several underground areas, and were based on the initial results from an aerosol measurement campaign. Two caves (the Bozkov Dolomite Caves and the Zbrašov Aragonite Caves) were selected for advanced long-term measurements. A large number of long-term and short-term studies were carried out. The most important results for cave environments were: the...

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4 Holý, Kamil
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