Sometimes, when it is impossible to perform a direct measurement, it is critical to obtain an estimate of the indoor gamma dose rate with adequate accuracy and precision. With a method we set up – the IN-OUT method – it is possible to estimate the indoor gamma dose rate attributable to building materials. Gamma dose rates are measured in contact with an external wall of a dwelling, and then a “...

 ABSTRACTBackground: There are relatively rich uranium mines in regions of Saghand and Bafgh in Yazd province. This survey was carried out to provide a map of ambient gamma radiation of Yazd province and the probable effects of the existence of these mines on background radiation dose rates.Materials and Methods: The measurements of the outdoor and indoor–environmental exposures (including cosm...

abstractbackground: there are relatively rich uranium mines in regions of saghand and bafgh in yazd province. this survey was carried out to provide a map of ambient gamma radiation of yazd province and the probable effects of the existence of these mines on background radiation dose rates.materials and methods: the measurements of the outdoor and indoor–environmental exposures (including cosmi...

background: humans beings are continuously exposed to ionizing radiation from natural sources. the main contributors to natural radiation are high-energy cosmic radiation and radioactive nuclides that originates in the earth’s crust. exposure to high levels of radiation can cause serious health effects. in this study an attempt has been made to monitor the levels of environmental background rad...

The highest concentration of radon (222 Rn) and thoron (220 Rn) in indoor environment is a major health hazard for man (1) as a result many researchers (2–4) are interested to estimate indoor radon concentration in many countries. In this study, a survey of radon and its daughters has been done to provide data on the hourly, daily and seasonal average indoor radon in Isfahan city dwellings and ...

BACKGROUND Very few studies have evaluated the adverse effect of passive smoking exposure among active smokers, probably due to the unproven assumption that the dose of toxic compounds that a smoker inhales by passive smoke is negligible compared to the dose inhaled by active smoke. METHODS In a controlled situation of indoor active smoking, we compared daily benzo(a)pyrene (BaP) dose, estima...

Considering the epidemiological effect of radon on human beings, an attempt is made to make a nation-wide atlas of Rn and Rn for India. More than 5000 measurements have been carried out in 1500 dwellings across the country, India. The solid state nuclear track detectors were deployed for the measurement of indoor Rn, Rn and their progeny levels. The mean annual inhalation dose rate due to Rn, R...

Background: Humans beings are continuously exposed to ionizing radiation from natural sources. The main contributors to natural radiation are high-energy cosmic radiation and radioactive nuclides that originates in the earth’s crust. Exposure to high levels of radiation can cause serious health effects. In this study an attempt has been made to monitor the levels of environmental back...