Radiation is a widely known, and prototypical, inducer of genotoxic damage. With every moment of exposure to ionizing radiation, lesions and breaks are induced in the DNA, increasing an individual’s lifetime risk of developing cancer. At the same time, radiation therapy is a key part of the effective treatment of the very same disease. Radiation therapy is effective, capable of shrinking and ev...

In this paper the daily, monthly, seasonally, and yearly optimum slope angles of solar collectors are determined for areas in Iran and new models are developed to calculate the monthly, seasonally, and yearly optimum slope angles for latitudes of to north. To achieve this purpose, the slope and surface azimuth angles of solar collectors for receiving maximum solar radiation were determined ...

gamma rays pose enough energy to remove electrons from atoms of absorbing material including human body and adversely affect human health. the external exposure of human beings to natural environmental gamma radiation normally exceeds that from all man-made sources combined. therefore, we monitored gamma dose rate in indoor environments and estimated corresponding annual effective dose in selec...