Introduction Radioactive materials naturally exist in the world. Indeed, approximately 82% of human-absorbed radiation doses, which are out of human control, arise from natural sources of radiation including cosmic, terrestrial, and exposure through inhalation or ingestion. Thus, the aim of the present study was to estimate health risk, as well as the effective and organ doses from naturally oc...

It is well known that radon and its short-lived progenies have the most impact to the population effective dose from radioactive sources [1]. Precise and accurate radon monitoring results should be the basis for the establishment of the national reference level and implementation of radon action plans. During the period February and March 2015, Laboratory for Radioactivity and Dose Measurements...

The effect of indoor gamma dose rate, permeability of soil, substructure, and ventilation habits of inhabitants were studied using data of 84 low rise residential houses collected in an area of enhanced indoor radon concentration. The radon concentrations varied from 30 to more than 5000 Bqm. Cross-tabulation, comparisons of means and multiplicative models were used to test the significance of ...

In situ, high-resolution, gamma-ray spectrometry of a total number of 70 outdoor and 20 indoor representative measurements were performed in preselected, common locations of the main urban areas of Cyprus. Specific activities and gamma absorbed dose rates in air due to the naturally occurring radionuclides of (232)Th and (238)U series, and (40)K are determined and discussed. Effective dose rate...

the state of works of art exhibited inside museums can be strongly influenced by indoor air quality, due to chemical activity of gaseous pollutants and particulate matter. for that reason it is important to carry out periodic air quality controls to check if the concentration levels of air pollutants comply with the limits specified by the national laws. in this work we show results obtained i...

background: the existence of some radionuclides in soil and some building materials produce a β-γ radiation field, which in some regions the exposure of these radionuclides to human is high. materials and methods: the air-absorbed dose, indoor and outdoor annual effective dose of soil and some building material samples (ceramic, granite, gypsum, etc.). the samples were collected from 35 differe...

a study on natural radioactivity in virgin and agricultural soil samples collected from sungai petani was conducted using high-purity germanium. the mean activity concentrations of 226ra, 232th, and 40k in virgin soils were 51.06±5.83, 78.44±6.42, and 125.66±7.26 bq kg−1, respectively, while those in agricultural soils were 80.63±5.78, 116.87±7.87, and 200.66±18.24 bq kg−1, respectively. the co...

INTRODUCTION UNSCEAR (1) reported that the effective doses due to inhalation of radon (Rn) and its progeny account on average for about one-half of all natural sources of radiation. In recent years, indoor surveys in Europe and Asia revealed that the dose contribution from thoron (Rn) and its progeny can equal to or even exceed that of Rn and its progeny (2). For assessment the public exposure ...

background: many public health agencies rank residential radon exposure as the second leading cause of lung cancer after cigarette smoking. it has been shown that the risk coefficient for lung cancer is higher for children than that for adults. therefore, indoor radon measurements were carried out in the elementary schools of tulkarem province, west bank, palestine. materials and methods: two h...