نتایج جستجو برای: indoor radon concentration
تعداد نتایج: 417575 فیلتر نتایج به سال:
Keramatollah Akbari, Jafar Mahmoudi TDI researcher at ACECR, Iran and Mälardalen University, PhD student, School of Sustainable Development of Society and Technology, Västeras, Sweden [email protected] Mälardalen University, Adj Professor at School of Sustainable Development of Society and Technology, Västeras, Sweden [email protected] Abstract A heat recovery ventilation system en...
Indoor radon is the second most important risk factor for lung cancer and may also be a risk factor for hematopoietic cancers, particularly in children and adolescents. The present study measured indoor radon concentration nationwide at 5553 points during 1989-2009 and spatially interpolated using lognormal kriging. The incidences of lung cancer, non-Hodgkin's lymphoma (NHL), and leukemia, stra...
The starting point of the Spanish experience in the study of High Background Radiation Areas is the development of a nationwide indoor radon survey carried out in 1988. This campaign, belonging to the first Spanish Radon Framework, consisted of approximately 2000 indoor radon measurements which represented a valuable basis to face rigorously the radon issue in Spain. Together but indepently fro...
We measured radon (222Rn) concentrations in Iowa and Minnesota and found that unusually high annual average radon concentrations occur outdoors in portions of central North America. In some areas, outdoor concentrations exceed the national average indoor radon concentration. The general spatial patterns of outdoor radon and indoor radon are similar to the spatial distribution of radon progeny i...
The objective of this study was to evaluate the ecological association between indoor radon concentration and acute leukaemia incidence among children under 15 years of age in the 348 geographical units (zones d'emploi, ZE) of France between 1990 and 1998. During that period, 4015 cases were registered by the French National Registry of Childhood Leukaemia and Lymphoma. Exposure assessment was ...
The objective of this research paper is to create a public awareness in understanding the radon gas problem, discuss efficient data management methods and analyses of indoor radon gas concentrations, and mitigate the indoor radon gas concentrations to below acceptable level in the state of Ohio. The Ohio Radon Information System (ORIS) is a compendium of five databases or modules, viz. the “Hom...
Radon concentrations were measured using passive dosimeters SSNTD CR-39inIllar region, Tulkarem, Palestine. The dosimeters were installed in living rooms, bedrooms, bathrooms and kitchens, which were selected randomly in the surveyed area. Indoor radon levels and the annual effective dose in houses were found to be from 4.9-116.0 Bq m and 0.11-1.73 mSv y, respectively, with average values of 38...
Exposure to indoor radon has been determined to be the second leading cause of lung cancer after tobacco smoking. Canadian population risk of radon induced lung cancer was assessed in 2005 with the radon distribution characteristics determined from a radon survey carried out in the late 1970s in 19 cities. In that survey, a grab sampling method was used to measure radon levels. The observed rad...
Indoor radon concentrations have been tested in thousands of residential housing units and large buildings during the past six a half years in the State of Florida. Beginning in 1989, testing has been conducted in compliance with the state radon regulations. These regulations mandate that periodic indoor radon testing be conducted in facilities that render services of public nature, and require...
The origins of radon gas are the amount of uranium decay in the soil that is released into space and through the interior gaps of buildings. Radon can enter the respiratory system and cause radiation hazards. Recently research has identified Radon as the second leading cause of lung cancer after cigarette smoking. The indoor concentration of Radon progeny is mentioned as an important issue reg...
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