نتایج جستجو برای: radon concentration

تعداد نتایج: 386938  

خضری, مصطفی, معطر, فرامرز, منصوری, نبی اله, وریج کاظمی, کبری,

Introduction and purpose: Exposure to natural sources of radiation, especially radon and its short-term products, is an important issue around the world. Radon exposure causes lung cancer in humans. Therefore, the aim of this study was to measure the concentration of radon gas and its annual effective dose in Imam Hospital of Tehran, Iran and to compare its concentrations wi...

Background & Objective: Indoor radon gas (222Rn) has been recognized as one of the causes of lung cancer. The presence of radioactive radium in the construction & materials in the buildings its changes in contact with radon gas may lead to increase level of radon gas in the residential houses. In this regards, indoor radon measurement is important. This study was conducted to determine radon co...

2016
Karim Adinehvand Amin Sahebnasagh Mehdi Hashemi-Tilehnoee

BACKGROUND According to the world health organization, radon is a leading cause of cancer in various internal organs and should be regarded with concern. OBJECTIVES The aim of this study is to evaluate the concentration of soluble radon in the drinking water of the city of Aliabad Katoul, Iran. MATERIALS AND METHODS The radon concentration was measured by using a radon meter, SARAD(TM) mode...

ژورنال: سنجش و ایمنی پرتو 2019

The main objective of this research is measurement and assessment of the Radon-222 and Radium-226 radioactive levels in mineral water and drinking water in the Sareyn city. The guidelines used for Radon-222 and Radium-226 radiation sampling and analysis were ASTM D: 5072-09 and ISO 13165-1: 2013, respectively. The concentration of Radon-222 and radium-226 in mineral water and drinking water sam...

Indoor radon and thoron have been measured in the houses ofMoradabad District, Uttar Pradesh India, by means of solid state nuclear trackdetectors. Radon, an invisible radioactive gas, occurs naturally in indooratmospheres and along with thoron is the most important contribution of humanexposure to natural sources. Radon exists in soil gas building materials and indooratmosphere to name but a f...

Journal: :Radiation protection dosimetry 2006
A Clouvas S Xanthos M Antonopoulos-Domis

Simultaneous indoor radon, radon-thoron progeny and high-resolution in situ gamma spectrometry measurements, with portable high-purity Ge detector were performed in 26 dwellings of Thessaloniki, the second largest town of Greece, during March 2003-January 2005. The radon gas was measured with an AlphaGUARD ionisation chamber (in each of the 26 dwellings) every 10 min, for a time period between ...

Journal: :The Analyst 1998
G Yener E Küçüktaş

In the present work radon concentration measurements were performed for one year in 12 different boron, chromium and coal underground mines in Western Turkey. Lucas cells and nuclear track detectors were used for the measurements of radon and its decay products. The effects of parameters, such as type of mine, gallery depth and ventilation rate, on the radon concentration in mine air were exami...

Journal: Pollution 2017

Indoor radon and thoron have been measured in the houses ofMoradabad District, Uttar Pradesh India, by means of solid state nuclear trackdetectors. Radon, an invisible radioactive gas, occurs naturally in indooratmospheres and along with thoron is the most important contribution of humanexposure to natural sources. Radon exists in soil gas building materials and indooratmosphere to name but a f...

G. S. Sharma, K. Kant, S. B. Upadhyay, S. K. Chakarvarti,

Background: Radon, an invisible, odorless, heaviest (nine times heavier than air) and radioactive gas is an aberration (the only gas in the long decay chain of heavy metal elements). It is ubiquitously present in dwellings and in the environment. Humans receive the greatest radiation dose in their homes. That's where they spend most time - typically 70%, more for small children. Recent worldwid...

Journal: :iranian journal of radiation research 0
e. tabar faculty of science and arts, sakarya university, sakarya, turkey m.n. kumru institute of nuclear sciences, ege university, izmir, turkey m. i̇çhedef institute of nuclear sciences, ege university, izmir, turkey m.m. saç institute of nuclear sciences, ege university, izmir, turkey

background: the natural radioactivity level and the radon concentration of soil were measured at four important geothermal area located in dikili geothermal region, turkey. materials and methods: the natural radionuclide content of soil samples were measured by nai(tl) gamma spectrometer system and the soil radon concentration were determined using kodak-pethe lr-115 type ii solid state nuclear...

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