Abstract:<p>Depending on their concentration, naturally occurring radioactive materials (NORM) used for the construction of walls in living rooms may contribute elevated levels of radiation exposure for inhabitants. The main path of exposure by building materials is thought to be due to gamma radiation of <sup>40</sup>K and the progenies of the <sup>238</sup>U and <sup>232</sup>Th decay chains. Many efforts have been focus… Show more
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