This study assesses the level of background radiation for Canakkale province of northwestern Turkey. Radon concentrations in indoor air were determined using CR-39 nuclear track detectors and (222)Rn activity was found to be 167 Bq m( - 3) (equivalent to an annual effective dose of 4.2 mSv). Measurements of outdoor gamma radiation (of terrestrial and cosmic origin) in air were performed using p...

Environmental radon monitoring activities at the DOE Femald Environmental Management Project (FEMP) have been conducted extensively since the early 1980s. Monitoring has been conducted at ambient concentration levels (< 1 pCVL Rn-222), inside buildings, and at significantly elevated levels (hundreds of thousands pCiL Rn222) within the K-65 silos that store concentrated radium bearing wastes. Th...

This paper describes the design of a programmable stay-alone continuous radon monitoring system able to detect, count and store the amount of alpha particles with an energy of 5.49 MeV produced by the radioactive decay of environmental radon-222. It is included the electronic circuit design, the software development as well as the user interface and the hardware ensemble of all the system compo...

Radon is a naturally occurring gas that seeps out of rocks and soil. Radon comes from uranium that has been in the ground since the time the earth was formed, and the rate of radon seepage is variable, partly because the amounts of uranium in the soil vary considerably. Radon flows from the soil into outdoor air and also into the air in homes from the movement of gases in the soil beneath homes...

BACKGROUND To prepare for a possible influenza pandemic, a better understanding of the potential for the airborne transmission of influenza from person to person is needed. OBJECTIVES The objective of this study was to directly compare the generation of aerosol particles containing viable influenza virus during coughs and exhalations. METHODS Sixty-one adult volunteer outpatients with influ...

Radon is the oldest drug used by mankind. Ceremonial donations excavated at the hot radon springs in the Gastein valley, Austria, originate from the younger stone age. Today some 50 000 patients suffering from rheumatic deceases like ankylosing spondilytis are visiting the Radon therapy at Gastein, a few hundred thousands per year all over the world. Other radon therapies are located in Japan a...

The study concerns the analysis of 220Rn (thoron) recorded in surface soil two sites Campi Flegrei caldera (Naples, Southern Italy) characterized by phases volcanic unrest seven-year period 1 July 2011–31 December 2017. Thoron comes only from most layer, so characteristics its time series are strictly connected to shallow phenomena, which can also act at a distance measuring point these particu...