نتایج جستجو برای: radon alpha particles exhalation soil cr
تعداد نتایج: 581344 فیلتر نتایج به سال:
Radon and Thoron are the radioisotopes which radiate high alpha energy particles. These two gases can enter in the body by different ways such as inhalation, eating and drinking and then destroy body`s internal tissues and cause the lung cancer. The condensation of these gases differs in various areas and is more in zones near active faults. In this research, first the relation of Radon and Tho...
• Radon is a radioactive gas released from the normal decay of uranium in rocks and soil (see Question 1). • Radioactive particles from radon can damage cells that line the lungs and lead to lung cancer (see Question 3). • Radon is the second leading cause of lung cancer in the United States and is associated with 15,000 to 22,000 lung cancer deaths each year (see Question 4). • Studies showing...
introduction radon is a colorless and tasteless gas which exists in most soils. it is a substance that poses a potential risk for lung cancer in case a person is exposed to high levels over long periods of time. the environmental protection agency (epa) estimates that 90% of lung cancers per year are caused by radon. the aim of this paper is to estimate the absorbed doses of 222rn by mcnpx simu...
Background: In this study, measurement of indoor radon and its progeny levels was carried out in Gas Turbine Power Station in Haryana ( India ), where natural gas is used as fuel. For comparison, the results of a study carried out in thermal power plant in Haryana are also presented. Radon being a ubiquitous air pollutant has global impact and its monitoring in the environment at work places is...
This study was carried out to investigate builds up a rule map on various radiological factors in and around the Euphrates River Iraq. Radon levels, radium content surface mass radon exhalation rates for 20 sediment tests gathered from different districts along River, Iraq, (about 500km long) using can technique, with CR-39 plastic detector. fixation esteems were viewed as going 835.0 2797.7 Bq...
Background and Objective: Radon gas is one of the environmental risk factors which can increase the risk of lung cancer and it is well known as the second-leading cause of lung cancer after smoking. The aim of the present study was to investigate indoor radon gas concentration in residential and public environments of Nourabad Mammasani city and to estimate the effective dose due to radon expos...
Soil gas radon Rn concentration was measured at 12 location in the Al-Qassim area, using radon gas analyzer-type Alpha GUARD 2000 PRQ from Genitron Instruments (Germany). In each location four different depths were taken for soil gas measurements, staring from the ground surface. The results suggested that the largest concentration was 340 ± 22 Bq/m for 60cm depth at in Al-Tarfia point sample P...
Radon gases released from the ground surface and building materials are the major sources of ionization in the indoor atmosphere. Radon will undergo radioactive decay in the atmosphere by emitting an alpha particle. The alpha and beta particles, and the gama rays from Rn, Rn and their decay products give up their energy by ionizing the molecules and aerosol particles in the atmosphere. Radon an...
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