نتایج جستجو برای: radon concentrations

تعداد نتایج: 312969  

Journal: :Tobacco control 2000
E Lichtenstein J A Andrews M E Lee R E Glasgow S E Hampson

OBJECTIVE Radon and cigarette smoking have synergistic effects on lung cancer, even when radon concentrations are relatively low. Working through an electric utility company, we sought to reach smoking households with low radon concentrations and motivate smoking cessation or prohibiting smoking in the home. DESIGN Eligible homes (n = 714) were randomised to receive: (1) the Environmental Pro...

2016
Amin Shahrokhi Erika Nagy Anita Csordás János Somlai Tibor Kovács

Recently, it has been proved that more than half of the exposure to natural background radiation is from radon isotopes and their progenies [1]. The inhalation of radon and its decay products can result in biological changes within the lungs, thus increasing the risk of lung cancer. According to a report of the World Health Organization (WHO), after smoking, radon is the second most frequently ...

Journal: :Journal of environmental radioactivity 2011
Nezahat Hunter Colin R Muirhead Jon C H Miles

In this paper, a simple model for analysing variability in radon concentrations in homes is tested. The approach used here involves two error components, representing additive and multiplicative errors, together with variation between-houses. We use a Bayesian approach for our analysis and apply this model to two datasets of repeat radon measurements in homes; one based on 3-month long measurem...

2007
Michael Kitto Charles Kunz Craig McNulty Michael Kuhland Scott Coven

Groundwater radon levels of 83 Bq/L (2240 PC&) generated indoor radon levels >3300 Bq/m3 (89 pCi/L) at a commercial fish hatchery. Passive and active mitigation strategies to reduce the waterborne radon levels included a packed column, a waterfall through perforated grates, surface aeration, and bottom bubblers. Though waterborne co~centrations were reduced up to 83% using a combination of miti...

محمدپور تهمتن, رضاعلی, ززولی, محمد علی, ندافی, کاظم, کوشکی, زهره, یوسفی, ذبیح اله,

Background and purpose: Radon is a colorless inert gas which decay products are the main component of natural radioactive elements that are naturally produced in under layers of earth crust by decay of radium and uranium. It enters through buildings via gaps and cracks. Alpha particle emissions as a radon gas decay product can increase the incidence of lung cancer in human. Every person spends ...

M. Malakootian, Y. Soltani Nejhad,

Background: Radon is one of the most important radioactive elements which is released by natural decay of available uranium and radium in the ground. The presence of radon gas is common, wherever those faults are located there. Radon concentration of various drinking water resources of Bam villages; located near Bam fault; was measured. Materials and Methods: This cross-sectional study was cond...

A. Azam, A.H. Naqvi, D.S. Srivastava, M. Shakir Khan,

Background: Everyone is exposed to radon because it is present everywhere with varying concentrations. Radon and its progeny are well established as lung carcinogenic. Materials and Methods: Track etch technique using LR-115 plastic track detectors has been used to measure the effective radium content and radon exhalation rates in soil samples collected from urban area of Etah district...

Journal: :Annals of occupational and environmental medicine 2016
Sung-Soo Oh Sangbaek Koh Heetae Kang Jonggu Lee

Eleven cohorts of miners occupationally exposed to relatively high concentrations of radon showed a statistically significantly high risk of lung cancer, while three cohorts from the general population showed a relatively low concentration, but the results were not statistically significant. However, the risk of lung cancer tended to increase with increased radon exposure. The risk is likely to...

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