Results 151 to 160 of about 12,532 (187)

Indoor 222Rn Concentrations in Central Asturias

Health Physics, 1996
A survey of the 222Rn concentrations in 106 homes in the four main towns of the Central Asturias region was carried out over three years. A total of 1,014 measurements was obtained using passive radon charcoal canisters. The 222Rn concentrations fit a log-normal distribution law, with a geometric mean of 23 Bq m(-3).
J M, Pérez Iglesias, M C, Alvarez Alvarez, M T, Dopico Vivero, L, Garzón Ruipérez   +3 more
openaire   +2 more sources

222Rn Variations in Mystery Cave, Minnesota

Health Physics, 1995
222Rn concentrations and meteorological parameters were measured at 4-h intervals over a 2-y period in Mystery Cave, southeastern Minnesota. Continuous radon monitors and meteorological sensors connected to data loggers were installed at several locations along commercial tour routes.
R S, Lively, B C, Krafthefer
openaire   +2 more sources

222Rn in Groundwater in Nigeria

Health Physics, 1992
222Rn in groundwater was measured in wells of different rock types in Nigeria by direct gamma counting. Concentrations ranged between 1.7 +/- 0.1 and 161.6 +/- 2.4 Bq L-1, with only slight variations (maximum 2.1 sigma from the mean) in a year in a typical well.
I P, Farai, A O, Sanni
openaire   +2 more sources

Indoor 222Rn Concentrations in Istanbul Houses

Health Physics, 1993
Indoor average 222Rn concentrations have been measured in more than 400 houses in Istanbul city. The average radon concentrations in the houses were found to be between 10 Bq m-3 and 260 Bq m-3 and the mean value was 50 Bq m-3.
E M, Köksal, N, Celebi, B, Ozçinar
openaire   +2 more sources

Airborne 222Rn Concentration in Cypriot Houses

Health Physics, 1993
Studies from a pilot survey in 89 houses in Cyprus show that the arithmetic mean for the housing stock is about 7 Bq m-3 and the annual effective dose equivalent to the population from radon progeny is < 330 microSv y-1. Four houses have values > 30 Bq m-3, corresponding to two standard deviations from the mean value.
S, Christofides, G, Christodoulides
openaire   +2 more sources

GAMMA DISTRIBUTION AND HOUSE 222Rn MEASUREMENTS

Health Physics, 1992
The statistical distribution of 222Rn measurements from basements and first floors of homes in northeastern Pennsylvania was investigated. The gamma distribution was statistically significantly superior to the normal distribution (p less than 0.005) in describing the frequency distribution of the logarithm of observed 222Rn levels.
I, Janssen, J H, Stebbings
openaire   +2 more sources

Two-filter monitor for atmospheric 222Rn

Review of Scientific Instruments, 1980
A two-filter, continuous monitor has been developed for atmospheric 222Rn. Features include a sensitivity of better than 0.01 pCi/l, a high specificity for 222Rn, and immediate start up capability. The monitor has been computer modeled to facilitate calibration and selection of operating parameters.
S D, Schery, D H, Gaeddert, M H, Wilkening   +2 more
openaire   +2 more sources

Exposure of burrowing mammals to 222Rn

Science of The Total Environment, 2012
Estimates of absorbed dose rates to wildlife from exposure to natural background radionuclides are required to put estimates of dose rates arising from regulated releases of radioactivity and proposed benchmarks into context. Recent review papers have estimated dose rates to wildlife from (40)K, and (238)U and (232)Th series radionuclides.
Beresford, N.A., Barnett, C.L., Vives i Batlle, J., Potter, E.D., Ibrahimi, Z.-F., Barlow, T.S., Schieb, C., Jones, D.G., Copplestone, D.   +8 more
openaire   +4 more sources

Measurement of 222Rn Flux, 222Rn Emanation, and 226,228Ra Concentration from Injection Well Pipe Scale

Health Physics, 1998
222Rn flux (Bq s(-1)) was measured from the ends of twenty sections of produced water injection tubing (pipe) containing barite scale contaminated with naturally occurring radioactive material. Exposure measurements near the pipes were as high as 77.4 nC kg(-1)h(-1) (300 microR h(-1)). Flux measurements were accomplished by first purging the pipes with
A S, Rood, G J, White, D T, Kendrick
openaire   +2 more sources

Contribution of 222Rn in Domestic Water Supplies to 222Rn in Indoor Air in Colorado Homes

Health Physics, 1992
The contribution of 222Rn from domestic water wells to indoor air was investigated in a study of 28 houses near Conifer, CO. Air concentrations determined by alpha-track detectors (ATDs) and continuous radon monitors were compared with the predictions of a single-cell model.
E P, Lawrence, R B, Wanty, P, Nyberg
openaire   +2 more sources