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The Federal Office for Radiation Protection has developed a radon map of Germany. [73] The EU Directive 2013/59/Euratom (Radiation Protection Basic Standards Directive) introduced reference levels and the possibility for workers to have their workplace tested for radon exposure. In Germany, it was implemented in the Radiation Protection Act ...
Based on this system, the world is also split into 14 terrestrial habitats, of which eight are shared by Australia. The Australian land mass is divided into 89 bioregions and 419 subregions. Each region is a land area made up of a group of interacting ecosystems that are repeated in similar form across the landscape.
Radon is also oxidised by dioxygen difluoride to RnF 2 at 173 K (−100 °C; −148 °F). [24] Radon oxides are among the few other reported compounds of radon; [28] only the trioxide (RnO 3) has been confirmed. [29] The higher fluorides RnF 4 and RnF 6 have been claimed [29] and are calculated to be stable, [30] but their identification is ...
Maps of average radon levels in houses are available, to assist in planning mitigation measures. [8] While high uranium in the soil/rock under a house does not always lead to a high radon level in air, a positive correlation between the uranium content of the soil and the radon level in air can be seen.
High radon levels in a Minnesota (USA) basement with a passive under slab vent pipe system can be seen in the left half of the graph. After installation of a radon fan (ASD), a permanent reduction in radon levels to approximately 0.6 pCi/L can be seen in the right half of the graph. The most common approach is active soil depressurization (ASD).
The gamma spectrum shows prominent peaks at 609, 1120, and 1764 keV, belonging to bismuth-214, a radon decay product. The atmospheric background varies greatly with wind direction and meteorological conditions. Radon also can be released from the ground in bursts and then form "radon clouds" capable of traveling tens of kilometers. [7]
Updating maps of Southern California show where wildfires, including the Palisades and Eaton fires, are burning across Los Angeles. Maps show where fires are burning right now in L.A. area Skip to ...
The Freycinet Map of 1811 is the first map of Australia to be published which shows the full outline of Australia. [1] It was drawn by Louis de Freycinet and was an outcome of the Baudin expedition to Australia. It preceded the publication of Matthew Flinders' map of Australia, Terra Australis or Australia, by three years.