to assess the environmental radioactivity levels and hence to determine the population exposure in kutubdia island, bangladesh the sediment samples were analyzed by using gamma ray spectrometry. in those sediment samples the average activity concentration of natural radionuclides 238u, 232th and 40k were found 15.39±1.67, 38.35±0.76 and 475.51±21.15 bq/kg respectively. the activity concentratio...

The biliary excretion and blood/plasma ratios of four novel 5-bromo-6-alkoxy- 5,6-dihydro prodrugs to S-ethyl-2'-deoxyuridine (EDU) including (-)-trans-(5S, 6S)-S-bromo-S-ethyl-6-methoxy-S, 6-dihydro-2'-deoxyuridine (BMEDU), (+ )-trans( SR, 6R)-S-bromo-S-ethyl-6-ethoxy-S, 6-deoxyuridine (BEEDU), (+ )-trans-(SR, 6R)-5-bromo-5-ethyl-6-ethoxy -S, 6-dihydro-S '-O-valeryl-2 ':.deoxyuridine (VBE...

Although a strong link between viruses and prokaryotes is commonly known to exist in aquatic systems, few studies have investigated their relationship spring waters. In the French Massif Central, certain springs are exhibit varying levels of naturally occurring radioactivity. Therefore, aim this study was examine standing stock together with determine potential environmental factors influencing...

The paper addresses the international policies and strategies for the remediation of land contaminated by radioactive material residue, its main aim being to describe the misunderstandings, evolution and status of the international paradigms in this area. Thus, the denotation and connotation of the 'remediation' and 'contamination' concepts are explored, including the ambiguity they produce in ...

The issues of environmental safety oil-bearing regions are highlighted. Oil and strata waters contain, along with chemical elements, radionuclides, removal which oil to the Earth's surface occurs during gas production. radioactivity rocks aluminosilicate type was investigated. It has been determined that clay from Apsheron region is several times higher than other deposits our republic. noted s...

a study on natural radioactivity in virgin and agricultural soil samples collected from sungai petani was conducted using high-purity germanium. the mean activity concentrations of 226ra, 232th, and 40k in virgin soils were 51.06±5.83, 78.44±6.42, and 125.66±7.26 bq kg−1, respectively, while those in agricultural soils were 80.63±5.78, 116.87±7.87, and 200.66±18.24 bq kg−1, respectively. the co...

To assess the environmental radioactivity levels and hence to determine the population exposure in Kutubdia Island, Bangladesh the sediment samples were analyzed by using gamma ray spectrometry. In those sediment samples the average activity concentration of natural radionuclides 238U, 232Th and 40K were found 15.39±1.67, 38.35±0.76 and 475.51±21.15 Bq/kg respectively. ...

The main objective of the present study was to assess natural radioactivity level from soils an abandoned potash mine and its surroundings at Holle locality in Hinda district, Republic Congo. Samples were analyzed using HPGe gamma spectrometer. Activity concentration values obtained varied 21.01 ± 6.47 117.3 2.69 Bq/kg with a mean value 46.15 4.69 40 K; that 238 U 17.36 10.74 40.04 8.58 25.14 1...