نتایج جستجو برای: 226 ra and 137 cs
تعداد نتایج: 16836461 فیلتر نتایج به سال:
The transfer factors of radionuclides (Ra, U, Th, K and fallout radionuclides Cs) from soil to plant and grass collected from the north-west of West Bank environment – Palestine were measured. For soil to plant, the average transfer factor (TF) values were found to be 0.60, 0.50, 0.31, and 1.70 for 226 Ra, 238 U, 232 Th and 40 K respectively. For soil to grass the TF values were found to be 1.2...
چکیده ندارد.
The presence of natural radioactivity and (137)Cs has been investigated in fresh media obtained from South China Sea locations off the coast of peninsular Malaysia. The media include seafood, sea water and sediment. The samples were collected some weeks prior to the devastating 2011 Tōhoku earthquake and associated tsunami, the occurrence of which precipitated the Fukushima incident. All sample...
Soil samples from the three residential hubs of Chittagong city, Bangladesh were analyzed using gamma spectrometry to estimate radiation hazard due to natural radioactive sources and anthropogenic nuclide (137)Cs. The activity concentration of (226)Ra was found to be in the range 11-25 Bq.kg(-1), (232)Th in the range 38-59 Bq.kg(-1) and (40)K in the range 246-414 Bq.kg(-1). These results were u...
The decay rates of eight nuclides ((85)Kr, (90)Sr, (108)Ag, (133)Ba, (137)Cs, (152)Eu, (154)Eu, and (226)Ra) were monitored by the standards group at the Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany, over the time frame June 1999 to November 2008. We find that the PTB measurements of the decay rate of (137)Cs show no evidence of an annual oscillation, in agreement with the...
It is obvious that healthy eating will only be with foodstuffs, and the foods consumed can affect social life religious in addition to physical mental health. The concentration of radioactivity may basic foodstuffs such as oil increase dose rate taken food. In study, no measurable U-238, Ra-226, Th-232, K-40, Cs-137 Cs-134 concentrations were found olive oils obtained from olives grown Osmaniye...
The regularities of natural (K-40, Th-232, Ra-226) and artificial (Sr-90 and Cs-137) radionuclides accumulation by embryonic soils and various organs of Taraxacum officinale Web. in rock waste disposal areas of the Kedrovsky coal pit in the Kuznetsk Basin were studied. The K-40 natural radionuclide causes major radioactivity of embryonic soils at rock waste disposal areas – its share in the tot...
The aim of the study was to determine activity concentration natural radionuclides (226Ra, 210Po, 228Ra and 40K) artificial radionuclide 137Cs in muscle marine fish species most consumed city São Paulo evaluate annual effective dose due consumption fish. Samples were collected supermarket chain Extra Carrefour distribution center CEAGESP. Six selected among available city: anchovy, tuna, dogfis...
abstractbackground: 226 ra and 228 ra contents in foodstuffs of ramsar which is a coastal city in the northern part of iran were determined by gamma spectrometry. measurement results together with food consumption rates were used to estimate annual effective dose from 226 ra and 228 ra, due to consumption of food stuffs by inhabitants of ramsar city.materials and methods: a total of 33 samples...
In the present work, we determined activity concentrations of ten Medicinal herbs using gamma spectrometry. The radioactivity concentration 226 Ra, 232 Th, 40 K and 137 Cs were 2.82, 0.63, 984.32, 0.28 Bq/kg, respectively. These doses are not hazardous to general public's health. mean values radium equivalent (Raeq), absorbed dose rates (D), annual effective (De) external hazard index (Hex) 79....
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