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151 results on '"Ramola, R.C."'

24. Radon emanation from soil and groundwater and surface gamma dose rate in Budhakedar, Garhwal Himalayas, India

Author

Ramola, R.C., Prasad, Ganesh, and Prasad, Yogesh

Subjects
Garhwal (Region) -- Environmental aspects, Soils, Radioactive substances in -- Measurement -- Environmental aspects, Water, Underground -- Contamination -- Measurement -- Environmental aspects, Radon -- Measurement -- Environmental aspects, Construction and materials industries, Health, Measurement, Contamination, Environmental aspects
Abstract

Abstract Radon was measured in soil-gas and groundwater in the Budhakedar area of Tehri Garhwal, India and related to the gamma dose rate in the same area. A laboratory experiment [...]

Published
2007

30. Indoor radon, thoron and their progeny concentrations in high thoron rural Serbia environments

Author

Zunic, Zora S., Stojanovska, Zdenka, Veselinovic, Nenad, Mishra, Rosaline, Sapra, B.K., Ishikawa, T., Omori, Y., Curguz, Zoran, and Ramola, R.C.

Subjects
Physical sciences
Abstract

Following the recent published paper (Mishra R., Zunic Z.S. et al., 2014) with results from 43 houses of Sokobanja (Southern Serbia), the results from a new survey in those region are subject of this work. This paper deals with the variation of radon, thoron and their progeny concentrations in 40 houses, distributed over the 4 villages of Sokobanja community, Southern Serbia. Two different types of passive detectors were used: 1) discriminative radon-thoron detector for simultaneous radon and thoron gases measurements and 2) direct thoron and radon progeny sensors (DRPS/DTPS) for measuring radon and thoron progeny concentrations, expressed in terms of equilibrium equivalent concentrations (EERC and EETC). Detectors were deployed on the wall in one of the most occupied room in each house and exposed simultaneously for a period of one year (i.e. a single period of 12 months). The results of measured concentrations were in the following ranges: from 8 to 189 Bq/m3 for radon and 10 to 412 Bq/m3 for thoron concentrations; from 5 – 22 Bq/m3 and 0.13 - 3.37 Bq/m3 for EERC and EETC, respectively. The geometric means (GM) and geometric standard deviation (GSD) were found to be GM=43 Bq/m3 (GSD=2.11) for radon, GM=89 Bq/m3 (GSD=2.25) for thoron, GM=10.2 Bq/m3 (GSD=1.48) for EERC and GM=0.86 Bq/m3 (GSD=2.14) for EETC. The variations of thoron and EETC appear higher than those of radon and EERC. An analysis of the spatial variation of the measured concentrations is also reported. This work is part of a wider survey of radon, thoron and their progeny concentrations in indoor environments throughout the Balkan region, started in 2011 year.

Published
2016

31. Natural radiation level in the environment of Tehri Garhwal, Uttaranchal

Author

Ramola, R.C. and Negi, M.S.

Subjects
Radiation -- Measurement, Radiation -- Environmental aspects, Environmental services industry
Abstract

Byline: R.C. Ramola, M.S. Negi The natural radiation levels were measured in about 50 residential houses of Tehri Garhwal, Uttaranchal, using an environmental radiation dosimeter in both the indoor and the outdoor atmosphere. The total gamma ray activity was found to vary from 29.74 [micro]R/h to 41.19 [micro]R/h with a mean of 36.5 [micro]R/h for the indoor environment, whereas for outdoors it varied from 28.76 [micro]R/h to 43.46 [micro]R/h with a mean of 30.1 [micro]R/h. The resulting gamma ray dose at 20 traditional rural houses was also measured. The values varied from 38.91 [micro]R/h to 77.68 [micro]R/h with a mean of 66.6 [micro]R/h. Measurements of the diurnal variation of the dose rates showed that they are higher in the rural traditional houses than in modern houses. The variations of dose rate with the type of building material, the mode of construction and the age of houses are also discussed.

Published
2004

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