نتایج جستجو برای: radon

تعداد نتایج: 6960  

2016
Takahiro Kataoka Shunsuke Horie Reo Etani Norie Kanzaki Kaori Sasaoka Yusuke Kobashi Katsumi Hanamoto Kiyonori Yamaoka

Radon inhalation brings pain relief for chronic constriction injury- (CCI-) induced neuropathic pain in mice due to the activation of antioxidative functions, which is different from the mechanism of the pregabalin effect. In this study, we assessed whether a combination of radon inhalation and pregabalin administration is more effective against neuropathic pain than radon or pregabalin only. M...

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...

2011
Daniel J. Breton

Radon concentrations and fluxes were measured for seasonal snowpack on Baldpate Mtn. in Newry, Maine during the winter of 2004. A solar radiation and temperature logging system was developed to monitor the snowpack during the radon measurements. Radon ground flux measurements were performed using a RAD-7 alpha spectrometer and ranged from 0.49 to 0.64 pCi m s for two different locations. Radon ...

Journal: :Journal of radiological protection : official journal of the Society for Radiological Protection 2013
M García-Talavera A García-Pérez C Rey L Ramos

Identifying radon-prone areas is key to policies on the control of this environmental carcinogen. In the current paper, we present the methodology followed to delineate radon-prone areas in Spain. It combines information from indoor radon measurements with γ-radiation and geological maps. The advantage of the proposed approach is that it lessens the requirement for a high density of measurement...

Journal: :Radiation protection dosimetry 2012
Jing Chen

On the basis of the results of the recent combined analyses of epidemiological studies, the International Commission on Radiological Protection (ICRP) revised the lifetime excess absolute risk of radoninduced lung cancer to 5 10 per working level month (WLM). When applying this new coefficient in risk assessment, it should first be understood that the coefficient is associated with a chronic ex...

2006
Vladimír Řeřicha Michal Kulich Robert Řeřicha David L. Shore Dale P. Sandler

OBJECTIVE Uranium miners are chronically exposed to low levels of radon and its progeny. We investigated whether radon exposure is associated with increased incidence of leukemia, lymphoma, or multiple myeloma in this population. DESIGN We conducted a retrospective case-cohort study in 23,043 uranium miners and identified a total of 177 incident cases of leukemia, lymphoma, and myeloma. Detai...

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...

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 ...

Rashmi, G.S. Sharma, K. Kant, R.G. Sonkawade, R.P. Chauhan, S.K. Chakarvarti,

Background: Radon and thoron are invisible, odorless, heavy and radioactive gases which are ubiquitously present in dwellings and in the environment. In the present work, seasonal variation of indoor radon, thoron and their progeny concentrations has been studied in the dwellings of industrially polluted cities in District Faridabad, Haryana and District Mathura in Uttar Pradesh. Materials and ...

Journal: :Canadian journal of public health = Revue canadienne de sante publique 2014
Perry Hystad Michael Brauer Paul A Demers Kenneth C Johnson Eleanor Setton Alejandro Cervantes-Larios Karla Poplawski Alana McFarlane Alan Whitehead Anne-Marie Nicol

OBJECTIVE Radon is an important risk factor for lung cancer. Here we use maps of the geographic variation in radon to estimate the lung cancer risk associated with living in high radon areas of Canada. METHODS Geographic variation in radon was estimated using two mapping methods. The first used a Health Canada survey of 14,000 residential radon measurements aggregated to health regions, and t...

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