نتایج جستجو برای: radon gas

تعداد نتایج: 251476  

2007
Kenny Gross Francis Markun

Argonne National Laboratory (ANL) recently discovered that a class of inexpensive and biologically benign fluids absorb radon gas with a high efficiency at room temperature, and release radon at slightly elevated temperatures (50-60 OC). This has led to the development of simple and inexpensive devices for continuous removal of radon from air. Such devices offer numerous advantages over convent...

2005
John Ware

IEE Wiring Matters | Spring 2005 | www.iee.org Radon – a brief explanation Radon is a naturally occurring gas that has no colour, smell or taste. The gas comes from minute amounts of uranium present in all earth materials such as rocks, soil, bricks and concrete. Radon is present in all parts of the UK, but in the most populous areas the levels are quite low. Some of the highest levels are foun...

Journal: :Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke 2017
Christina Søyland Hassfjell Tom Kristian Grimsrud William J F Standring Steinar Tretli

BACKGROUND Radioactive radon gas is generated from uranium and thorium in underlying rocks and seeps into buildings. The gas and its decay products emit carcinogenic radiation and are regarded as the second most important risk factor for lung cancer after active tobacco smoking. The average radon concentration in Norwegian homes is higher than in most other Western countries. From a health and ...

2014
Mily Jashank Sureshchandra J. Gupta Jayalakshmi Nair

Radon gas is colorless, odorless and tasteless and can only be detected by testing. It naturally occurs from traces of uranium in soils and rocks. It results from the decay of trace amounts of uranium, found in most rock and soil. It is measured using special monitors and expressed in units of bequerels per cubic metre (Bq/m3) or picocuries per litre (pCi/L). The air pressure inside the laborat...

2006
Olga Stawarz Maria Karpińska Kalina Mamont-Ciesla

Although radon dose to lungs comes mainly from shortlived radon daughters, most of its estimations for general population is based on the measurements of radon gas concentration instead of radon progeny and acceptance of a constant equilibrium factor between radon and its short-lived decay products. It is so because integrating passive measurements of radon gas concentration are simpler and che...

2017
Reo Etani Takahiro Kataoka Norie Kanzaki Akihiro Sakoda Hiroshi Tanaka Yuu Ishimori Fumihiro Mitsunobu Takehito Taguchi Kiyonori Yamaoka

Radon therapy using radon (222Rn) gas is classified into two types of treatment: inhalation of radon gas and drinking water containing radon. Although short- or long-term intake of spa water is effective in increasing gastric mucosal blood flow, and spa water therapy is useful for treating chronic gastritis and gastric ulcer, the underlying mechanisms for and precise effects of radon protection...

2015
Jing Chen Lauren Bergman Renato Falcomer Jeff Whyte

Radon has been identified as the second leading cause of lung cancer after tobacco smoking. (222)Rn (radon gas) and (220)Rn (thoron gas) are the most common isotopes of radon. In order to assess thoron contribution to indoor radon and thoron exposure, a survey of residential radon and thoron concentrations was initiated in 2012 with ∼4000 homes in the 33 census metropolitan areas of Canada. The...

A.S. Shapovalov, L. Minkin,

The paper discusses the results of 30 years of radon indoor entry research. While some progress has been made, many discrepancies between current theories and experimental data still remain. Misconceptions of radon transport mechanisms in homes are analyzed. The role of US Environmental Protection Agency in radon indoor entry research is examined and the agency's policies are criticize...

2009
Yogesh Prasad Ganesh Prasad G S Gusain V M Choubey R C Ramola

Radon is being measured continuously in spring water and soil-gas at Badshahi Thaul Campus, Tehri Garhwal in Himalayan region by using radon Emanometer since December 2002. An effort was made to correlate the variance of radon concentrations in spring water and soil-gas with meteorological parameters at the same location. The main meteorological parameters that affect the radon emanation from h...

Journal: :Health education & behavior : the official publication of the Society for Public Health Education 1998
K Witte J M Berkowitz J M Lillie K A Cameron M K Lapinski W Y Liu

Radon gas is a significant health threat linked to thousands of preventable deaths each year. One population that may be at increased risk from harm from radon exposure is African Americans. However, little is known about what African Americans think or know about radon. A theoretically based evaluation of radon awareness and reduction campaigns was conducted with African Americans. The knowled...

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