The Bat Xat district in the Lao Cai province of Vietnam has enormous potential for resources copper and rare earth minerals. In fact, exploration exploitation activities these minerals have brought about positive economic benefits to this area recent years. However, activity also brings negative impacts on environment surrounding population. mineral deposits contain a significant content radioa...

The average radiation dose received by humans each year as natural background is 2.4 mSv and long-term exposure to such harmful can be severely hazardous. According the BEIR-VI report, radon (222Rn) alone accounts for higher than 50% of all ambient from sources. Thus, its quantification essential evaluate any risk imposed human health. Newly created LR-115 films embedded in pinhole detectors ha...

As it is known, the radon (222Rn) gas and its progenies are considered to be the major contributors to human exposure from natural radiation sources [1]. Several surveys seem to have concluded that the radon in the living environment implies an increased health risk [3, 9, 18]. This is the reason why national authorities and international organizations issues guidelines concerning radon levels ...

background: decay products of radon and thoron present in indoor environment are the most important sources of radiation from natural sources which affect human beings, since general public spend at lest 80% of their time in indoor. materials and methods: air samples were collected for measuring the concentration of radon and thoron daughter products from various indoor environments during four...

Background: Decay products of radon and thoron present in indoor environment are the most important sources of radiation from natural sources which affect human beings, since general public spend at lest 80% of their time in indoor. Materials and Methods: Air samples were collected for measuring the concentration of radon and thoron daughter products from various indoor environments d...