نتایج جستجو برای: indoor radon and thoron

تعداد نتایج: 16835318  

2016
Kristina Bikit Vesna Arsić Jovana Ilić Gordana Pantelić Miloš Živanović

It is well known that radon and its short-lived progenies have the most impact to the population effective dose from radioactive sources [1]. Precise and accurate radon monitoring results should be the basis for the establishment of the national reference level and implementation of radon action plans. During the period February and March 2015, Laboratory for Radioactivity and Dose Measurements...

2016
Rohit Mehra Rajan Jakhu Pargin Bangotra Harish Mohan Mittal

Radon (222Rn) and its decay products are the major sources of natural radiation exposure to general population. The activity concentrations of unattached and attached short-lived 222Rn and thoron (220Rn) progeny in indoor environment of some dwellings of the Jalandhar and Kapurthala districts of Punjab had been calculated using the deposition-based progeny sensors (DRPS/DTPS) and wire-mesh-capp...

Journal: :international journal of environmental research 2015
s. sedighian s. h. kim s. y. cho m. j. kim d. h. kim

indoor radon concentration (irc) is among the emerging environmental and health issues in republic of korea. due to lack of epidemiological studies and insufficient public awareness about radon, effective parameter ranking system is required to establish protocols for future field sampling and settlement construction. this research propose the irc parameter ranking system based on field measure...

2016
Si-Heon Kim Won Ju Hwang Jeong-Sook Cho Dae Ryong Kang

Exposure to radon gas is the second most common cause of lung cancer after smoking. A large number of studies have reported that exposure to indoor radon, even at low concentrations, is associated with lung cancer in the general population. This paper reviewed studies from several countries to assess the attributable risk (AR) of lung cancer death due to indoor radon exposure and the effect of ...

Ever since studies on uranium miners established the presence of a positive risk coefficient for the occurrence of lung cancer in miners exposed to elevated levels of 222Rn and its progeny, there was a great upsurge of interest in the measurement of 222Rn in the environment and considerable data is generated on the levels of 222Rn in the environment across the worlds and is periodically ...

Journal: :Journal of environmental radioactivity 2015
K Kourtidis A K Georgoulias M Vlahopoulou N Tsirliganis N Kastelis K Ouzounis N Kazakis

Extensive measurements of (222)Rn in the town of Xanthi in N Greece show that the part of the town overlying granite deposits and the outcrop of a uranium ore has exceptionally high indoor radon levels, with monthly means up to 1500 Bq m(-3). A large number of houses (40%) in this part of the town exhibit radon levels above 200 Bq m(-3) while 11% of the houses had radon levels above 400 Bq m(-3...

2016
Fredrick Neal FREDRICK B. NEAL Dajun Dai Jeremy Diem Daniel Deocampo

Radon (RN-222), naturally released from underground, is the second leading cause of lung cancer for at-risk groups after smoking, and the leading cause of lung cancer. This research aims to investigate the relationship between housing characteristics and indoor radon levels. Indoor radon data (1993 – 2013) were obtained from the DeKalb County Board of Health alongside housing characteristics so...

2016
Qifan Wu Ziqiang Pan Senlin Liu Chunhong Wang Q. F. Wu

The annual effective dose to Chinese population from natural radiation exposure is about 3.1 mSv/y, of which 1.56 mSv/y or 50% is due to the exposure from radon and its daughters [1]. The enhanced natural radiation level results mainly from indoor radon concentrations rising by 70%, compared to the previous data in 1990s [1, 2]. Based on the research, the increase in indoor radon concentrations...

2013
DOBROMIR S. PRESSYANOV Dobromir S. Pressyanov

The report comprehends one decade experience in the use of the high radon absorption ability of bisphenol-A based polycarbonates for measuring radon. The three major directions of research and development include: (1) Use of the polycarbonate material, in particular that of which CDs/DVDs are made, as both radon absorber and track detector for measuring radon; (2) Use of a polycarbonate foil as...

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