Results 191 to 200 of about 202,697 (247)

Improved Radon Daughter Monitoring Procedure

American Industrial Hygiene Association Journal, 1969
Abstract A simple, rapid procedure for monitoring radon daughters in mine air has been developed., Air is drawn through a membrane filter for a period, the duration of which is adjusted to the minimum sampling time necessary to give a specified accuracy in the final results.
openaire   +2 more sources

Radon Daughter Plateout - II Prediction Model

Health Physics, 1983
By a linear programming procedure, we have optimized the Jacobi room model to fit our data on the partitioning of radon daughters between air and wall surfaces (plateout), obtained at high radon concentrations in a small chamber. Subsequently, the optimized model yielded estimates that compared well with plateout data obtained at lower concentrations ...
E O, Knutson, A C, George, J J, Frey, B R, Koh   +3 more
openaire   +2 more sources

Radon Daughter Exposures in the U.K.

Health Physics, 1983
Exposure due to the inhalation of the short-lived daughters of 222Rn is the single largest contributor to the exposure of the U.K. population. A survey of dwellings situated largely in the centers of population indicates an annual exposure of 0.16 WLM, on the average.
K D, Cliff, A D, Wrixon, B M, Green, J C, Miles   +3 more
openaire   +2 more sources

Investigation of radon daughters

Journal of Geophysical Research, 1963
A Goetz aerosol spectrometer and low-level counting techniques were used in studying the size distribution of natural radioactive aerosol particles. A number of values down to radii of 3×10−6 cm were obtained. These are compared with computed distribution curves and with estimates from experimental work of a different kind.
openaire   +1 more source

Radon Daughter Exposure to Uranium Miners

Health Physics, 1982
Radon exposures to U.S. uranium miners under present conditions average about 1.3 WLM per year approximately or equal to 60 WLM per full working lifetime. This is intermediate between (a) the lowest exposures for which there have been excess lung cancers reported among U.S. miners (120-240 WLM) and (b) average environmental radon exposures (16 WLM), so
openaire   +2 more sources

Measurement of Radon Daughters in Air

Health Physics, 1972
AbstractA simple method for determination of RaA, RaB and RaC has been developed which has a sensitivity of the order of 1 pCi/l. for each nuclide. An air sample is obtained and the total alpha disintegrations in three selected time intervals after the end of air sampling determined.
openaire   +2 more sources

RADON GAS TESTING: A POOR INDICATOR OF RADON DAUGHTER EXPOSURE

American Industrial Hygiene Association Journal, 1990
The problem of residential radon has created a demand for testing services that has been partly met by industrial hygienists. The United States Environmental Protection Agency (EPA), while disavowing responsibility or jurisdiction in this matter, has nonetheless published guidelines for homeowners to use in interpreting test results.
openaire   +1 more source

Measurement of radon, thoron and their daughters in the air of marble factories and resulting alpha-radiation doses to the lung of workers

Environmental Geochemistry and Health, 2019
M. Misdaq, A. Talbi, J. Ouguidi
semanticscholar   +1 more source

Evaluation of effect of ventilation on radon concentration and occupational exposure to radon daughters in low ore grade underground uranium mine

Journal of Radioanalytical and Nuclear Chemistry, 2014
P. Sahu, D. Panigrahi, D. P. Mishra
semanticscholar   +1 more source

RADON DAUGHTER ANALYZER.

Health Physics, 1980
F. M. Cox, B. M. Shoffner
openaire   +1 more source