A simple method for the direct determination of the air-loop volume in a RAD7 system as well as the radon partition coefficient was developed allowing for an accurate measurement of the radon activity in any type of water. The air-loop volume may be measured directly using an external radon source and an empty bottle with a precisely measured volume. The partition coefficient and activity of ra...

The present study shows that the presence of hydrogen sulfide and carbon dioxide in water have a negative effect on accuracy radon measurements samples when an electrostatic ion collector device (RAD7) is used.CO 2 concentrations between 0.65 g/l 5.19 were generated containing 222 Rn activities ranging from 23.4 ± 0.9 Bq/l to 6.7 Bq/l, after which measured by RAD7 device, results compared activ...

Abstract Radon is a naturally occurring, odorless, colorless, radioactive, tasteless, and noble gas. concentrations have been measured by the usage of alpha spectroscopy (RAD-7). The RAD-7 measuring process based on detecting particles produced from disintegration radon its products using solid-state detector (usually silicon), then converting radiation directly to an electrical signal. radioac...

We have examined the transcript levels of the Saccharomyces cerevisiae DNA repair gene RAD18 in UV irradiated cells, in the mitotic cell cycle, and during meiosis. Levels of RAD18 mRNA increased upon UV irradiation, but remained constant during the mitotic cell cycle. During meiosis, RAD18 mRNA levels rose about 4 fold at a stage coincident with the period when high levels of genetic recombinat...

In this study 222Rn (Radon) measurement were performed in water and soil gas and also both 222Rn and 220Rn concentrations were determined in air of Mansa and Muktsar district of Punjab, India. The data then used for calculation of the annual effective dose for health risk assessment of public. Totally 35 locations have been selected for the measurements. All measurements (222Rn and 220Rn) were ...

Introduction: Radon-222 gas is a radioactive, colorless and odorless element that can cause lung cancer and stomach in humans with alpha-ray emissions. An important source of Radon-222 is the output water in springs, especially hot springs to emit ionision radiation. In this study, Rn-222 activity concentration and gamma dose rate levels in water sample of some selected hot spr...

Removal of UV-induced pyrimidine dimers from the individual strands of the rDNA locus in Saccharomyces cerevisiae was studied. Yeast rDNA, that is transcribed by RNA polymerase I(RNA pol I), is repaired efficiently, slightly strand-specific and independently of RAD26, which has been implicated in transcription-coupled repair of the RNA pol II transcribed RPB2 gene. No repair of rDNA is observed...