background: radon concentration was measured in 50 drinking water samples in mashhad - iran. b the tap water used for drinking and other household usages can increase the indoor radon level. drinking water samples were collected from various places and supplies of public water used in mashhad. then radon concentration has been measured by portable radon gas surveyor silena (prassi) system. resu...

The largest fraction of the natural radiation exposure we receive comes from a radioactive gas, radon and its decay products (nearly 50%). The radon gas can enter to the body via respiring, drinking and eating and caused damage to respiratory and digestion systems. Also radium-226 is widely distributed in the environment. When a person ingests radium, this element deposits in bones and cause to...

The Martinetti-Banfi relationship was investigated by critics, who identified the point of origin Milan School in Banfi work. Yet, if texts are analyzed, it is not difficult to find a continuity between teacher and pupil. If this seems evident first writings, more markedly theoretical ones, even mature production indebted Martinetti's origins. Both confrontation with phenomenology Marxism, insi...