[en] The main objective for this paper is to determine the Beryllium-7, "7Be concentration during dry and wet fallout at two different sampling stations. Two selected sampling stations are located in Bangi, Selangor and Senawang, Negeri Sembilan which that based on the different fallout amount received annually. Meanwhile, the dry and wet fallout were collected from end of May until end of July 2015 using rain collector. The rainfall samples were brought to Radiochemistry and Environment Group (RAS) for further treatment by using chemical precipitation procedure. The filtered samples consist of "7Be concentration needs to be transferred into a Petri dish and dried in the oven for two (2) hour. The filtered samples from both locations were counting using Gamma Spectrometry for 24-hour with 20 % of the detector efficiency.The uncertainty of each "7Be concentration or activity, calculated as a γ-detector counting error at 95 % confidence level, is in the order of ±10 %. From the result showed "7Be concentration from Senawang station was lower than Bangi station in terms of concentration, which is 0.21 to 2.86 Bq l"-"1 and 0.54 to 3.55 Bq l"-"1 with an average 1.09 Bq l"-"1 and 1.53 Bq l"-"1, respectively. However, these two mean values at two sampling stations are not significant from other reports in the literature for example 0.02 to 5.90 Bq l"-"1 (Wallbrink and Murray, 1994), 0.50 to 1.59 Bq l"-"1 (Brown et al., 1988) and 0.59 to 2.74 Bq l"-"1(Peirson, 1963). Moreover, these two mean values are not to be used as reference data in Peninsula of Malaysia due to a minimal number of sampling stations been located. Therefore, a study should be carried out with more sampling stations would be selected to establish fallout "7Be data in Peninsula of Malaysia for future reference. (author)

No abstract available

[en] Samples of atmospheric dust and rainwater have been collected from the United Kingdom and elsewhere. Results are presented of analyses of these samples for various fission products and certain other radionuclides. The average concentrations of the long-lived fission products caesium-137 and strontium-90 in air and rain in the United Kingdom were, in 1975, about two-thirds those for 1974 and less than 4% of the maximum which was reached in 1963-64. No barium-140 or iodine-131, indicative of recent atmospheric tests, was detected in the United Kingdom in 1975. In the southern hemisphere about half the long-lived activity in air in 1975 originated in the French test series of 1974. The mean concentration of Cs-137 in air in 1975 was about two thirds that in 1974. An estimate is made of the worldwide deposit of Cs-137 and Sr-90 in rain to the end of 1974; the cumulative deposit has remained substantially constant since 1966 because losses by radioactive decay have continued to be slightly greater than deposition. The total deposit of long-lived activity in the northern hemisphere is about three times that in the southern hemisphere. The gamma and beta-ray dose rates from fallout at Chilton, Oxfordshire, England, are estimated from the observed deposition. Measurements of short-lived fission products in air and rain are given in an Appendix. (author)

No abstract available

No abstract available

[en] Samples of atmospheric dust and rainwater have been collected from the United Kingdom and elsewhere. Results are presented an analyses of these samples for various fission products and certain other radionuclides. The average concentration of the long-lived fission product caesium-137 in air in the United Kingdom was, in 1976, about one-third of that in 1975 and about 1% of the maximum which was reached in 1963 to 64. The concentration in rain and the deposition of caesium-137 and strontium-90 averaged over the United Kingdom for 1976 were about half those for 1975. No barium-140 or iodine-131, indicative of recent atmospheric tests, was detected in the United Kingdom after the Chinese explosion on 24 January 1976 but measurable concentrations were detected in air at Hong Kong during February. Fresh activity from the Chinese explosion on 26 September 1976 was detected in the United Kingdom. The peak deposition of iodine-131 that occurred in the second week in Octber was greater than at any time since January 1963 although the total deposition of iodine-131 was less than one-tenth of that in 1962 to 63. Trace amounts of fresh activity attributable to the high-yield Chinese explosion of 17 November were detected in the United Kingdom in December 1976. In the southern hemisphere the mean concentration of caesium-137 in air in 1976 was about half that in 1975. An estimate is made of the worldwide deposit of caesium-137 and strontium-90. The gamma and beta-ray dose rates from fallout at Chilton are estimated from the observed deposition. Measurements of short-lived fission products in air and rain are given in an Appendix. (author)

[en] Samples of atmospheric dust and rainwater have been collected from the United Kingdom and elsewhere. Results are presented of analyses of these samples for various fission products and certain other radionuclides. The average concentrations of long-lived fission products in air and rain in the United Kingdom in 1977 were about double those in 1976 and about 2% of the maximum which was reached in 1963-64. A similar rise occurred between 1973 and 1974. Despite such fluctuations the general trend is of slowly decreasing concentrations. Plutonium concentrations in air at Chilton are discussed for the years 1954-1977 and generally follow the pattern of long-lived fission products. Barium-140 and iodine-131 indicative of a recent atmospheric test were detected in air and rain in the United Kingdom after the low yield Chinese explosion of 17 September 1977. Iodine-131 ceased to be detectable by mid-October and barium-140 by December 1977. In the southern hemisphere the mean concentration of caesium-137 in air in 1977 was about two-thirds that in 1976. An estimate is made of the worldwide deposit of caesium-137 and strontium-90 which, in 1976, was the lowest since measurements were started in 1955. The gamma and beta-ray dose rates from fallout at Chilton are estimated from the observed deposition. Measurements of short-lived fission products in air and rain are given in an Appendix. (author)

No abstract available

No abstract available

[en] This patent application describes a shelter comprising a cavity for receiving life to be sheltered; a roof for covering at least a portion of said cavity, and at least one aqueous, protective barrier layer adapted to prevent transmission through said roof and into said cavity of at least a portion of radiation in a predetermined spectrum. The cavity walls may be impregnated with an oil suitable for dressing burns. (author)