نتایج جستجو برای: natural and man made radionuclides
تعداد نتایج: 16917899 فیلتر نتایج به سال:
The subject of this article is “Environmental, Natural and Man-Made Disasters Reflected in the Kazakh Eco-Documentary Films”. research’s aim to consider ecological state Kazakhstan via national ecodocumentary. research performed on basis cinema art materials Republic XX–XXI centuries. set objectives were achieved by using comprehensive methods: theoretical analysis, visual SWOT comparison colla...
Disasters whether natural or man-made occur from time to time and are accompanied by financial and human casualties. Their harmful effects are sometimes immense mostly on the poor, the illiterate, and marginalized people. This condition may be worsened when the governments have no financial support for the poor to save their lives.
Radionuclides and heavy metals/metalloids content in soils shore sediments of Al-Negila area (Matrouh, Egypt) were determined to assess the associated environmental risks. A total 46 soil sediment samples collected analysed for natural man-made radionuclides (238U series, 232Th 40K 137Cs) (Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, Mn, Ni, Si, Sr, Zn, Hg). Within study area, are mainly calcareous with ...
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...
Background: All human beings and living organisms are exposed to natural radiations on daily basis, which is mainly due to the activity concentration of primordial radionuclides 232Th, 238U and their products of decay together with the natural radionuclide 40K present in the earth’s crust. Materials and Methods: A total of 59 soil samples were collected around the banks and surroundings of the ...
the aim of this paper is eliminating cr(vi) by natural hap. hap is a inexpensive material which is used from bovine critical bone ash in order to remove heavy metal ions like cr(vi). some experiments in different ph are performed (ph=2,3,7). maximum adsorption was appeared at ph=2, dosage=0.3 gr, c0=10 mg/l. cr(vi) removal depends on ph value and initial amount of cr(vi) result of experiments w...
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