This work consists of two parts. In the first part, the doses in the human lung per unit exposure to thoron progeny, the dose conversion factor (DCF), was calculated. Dependence of the DCF on various environmental and subject-related parameters was investigated. The model used in these calculations was based on ICRP 66 recommendations. In the second part, the human lungs were considered as the ...

The average radiation dose received by humans each year as natural background is 2.4 mSv and long-term exposure to such harmful can be severely hazardous. According the BEIR-VI report, radon (222Rn) alone accounts for higher than 50% of all ambient from sources. Thus, its quantification essential evaluate any risk imposed human health. Newly created LR-115 films embedded in pinhole detectors ha...

The results of interpretation monitoring observations radon-220 (thoron) and radon-222 observations, carried out in 2002-2004 on the Northern Tien-Shan, are presented. Prognostic capabilities thoron as a short-term earthquakes precursor shown. It is noted that anomalies more contrast comparison with radon-222. Insufficient explained by methodological seismic radon stations. behavior during eart...

This study aimed to investigate the differences in relationship between radon and its progeny concentrations particulate matter under varying pollution weather conditions. Outdoor were measured by a radon/thoron- radon/thoron monitor (ERS-RDM-2S) during haze dust storm Beijing. Particulate meteorological data simultaneously recorded. Results showed that exhibited diurnal variation pattern, with...

Telah dilakukan pengukuran konsentrasi gas radon (Rn-222) dan thoron (Rn-220) menggunakan detektor CR-39 pada ruangan kelas di Kota Lubuk Basung. Penelitian bertujuan untuk menentukan data awal dalam ruangan, kemudian ditinjau berdasarkan ICRP Publikasi No. 126 tahun 2014. Pengukuran sebanyak 50 buah yang dipasang selama 3 bulan 9 lokasi sekolah. Detektor selanjutnya dietsa larutan NaOH 6,25N 7...

Accurate measurement of low-level thoron gas and high-accuracy calibration devices are essential for assessing preventing radiological risks. This study aimed to develop a technique using an airflow-through scintillation cell both calibration. To achieve this, compartment model was developed estimate the influence progeny deposition accumulation on wall prevent overestimation thoron. A self-dev...

*Corresponding author: Dr. T.V. Ramachandran, 19-A/201, Verain Regency Estate, Kalyan _ Shill Road, Dombivli (E) 421 202, Maharashtra, India E-mail: [email protected] 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 i...

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 ...