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 reporte...

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 ...

background: more than 50% of the total dose received by human beings from all sources of radiation (both from natural and manmade) comes from radon and its progeny which is responsible for lung cancer in many cases. materials and methods: in the present study, the measurements have been carried out by using twin chamber dosimeter cups with lr-115 type-ii detectors. the value of track density of...

Determination of Rn- 222 concentration and annual effective dose inhalation in the vicinity hot springs Kerman province, southeastern Iran

To investigate the efficacy of different sizes symbicort turbuhaler in treatment bronchial asthma and its effect on eosinophils. 138 patients diagnosed with treated our hospital from January 2019 to 2020 were selected randomly divided into high dose (n=69) low groups both doses Symbicortol top conventional regimen, which low-dose group was 80 μg/4.5 μg/inhalation: 1 inhalation/inhalation, twice...

BACKGROUND The characteristics of each inhalation maneuver when patients use dry powder inhalers (DPIs) are important, because they control the quality of the emitted dose. METHODS We have measured the inhalation profiles of asthmatic children [CHILD; n=16, mean forced expiratory volume in 1 sec (FEV1) 79% predicted], asthmatic adults (ADULT; n=53, mean predicted FEV1 72%), and chronic obstru...

Easy to carry, highly effective and extremely safe, allowing accurate, consistent dose delivery, metered dose inhalers are the inhalation devices doctors and patients choose most readily the world over. Clinical response, however, may be affected by the inhalation technique used and the precise formulation in the canisters. The purpose of this review is to consider metered dose inhalers, add on...

Low-dose irradiation induces various stimulating effects, especially activation of the biological defense system including antioxidative and immune functions. Oxidative stress induced by reactive oxygen species (ROS) can cause cell damage and death and can induce many types of diseases. This paper reviews new insights into inhibition of ROS-related diseases with low-dose irradiation or radon in...

the presence of radon in drinking water causes health risks associated with exposure from both inhalation and ingestion. since the studies show that faults near the water resources have a critical effect on the concentration of radon, kouhbanan active fault zone, to find water resources  with high radon concentration was chosen for the following investigation. water samples were taken from all ...