نتایج جستجو برای: natural radioactivity hazard

تعداد نتایج: 552402  

2017
Komal Badhan Rohit Mehra

Soil acts as a source of continuous radiation exposure to human and as a medium of migration for transfer of radionuclides to the biological systems hence causes the radiological contamination in the environment. So, it is necessary to study the natural radioactivity in soil to assess the dose due to terrestrial gamma radiation levels in order to know the health risks. The Primordial Radioactiv...

Journal: :محیط شناسی 0
احمد جهانگیری دانشیار گروه زمین شناسی دانشکدة علوم طبیعی، دانشگاه تبریز صالح اشرفی استادیار فیزیک هسته ای دانشکدة فیزیک، دانشگاه تبریز

the radionuclides 226ra, 232th and 40k concentrations measured as well as radiological parameters, for 14 granite samples that use in iran as building material were calculated. the measurements of the radioactivity concentrations were carried out at nuclear physics laboratory university of tabriz. this subject is important in environmental radiological protection, since granites are extensively...

Journal: : 2023

The natural radioactivity of the earth formations Tar Al-Najaf region in Al-Ashraf governorate has been studied , which is considered one most important archaeological areas province. As phenomena prominently present governorate, as it cuts sharply to form a rocky cliff, well overlooks from southern end plateau and on sea Al-Najaf, clear surprising way, flew, by selecting 30 sites take soil sam...

G. A. M. Ali , K. A. Aly , K. F. Chong, K. H. S. Shaaban, M. A. M. Uosif , R. Elsaman, Y. B. Saddeek ,

Background: The new glasses from harmful environmental waste such as cement dust; limestone phosphate, sand and borax (Genkare) were manufactured. Investigation of the radioactivity present in these materials (Phosphate rock, cement dust, limestone, sand and borax) enables one to assess any possible radiological hazard to humankind by such materials. Materials and Methods: Fifteen samples were ...

G.S. Kulkarni, S.H. Pawar, S.J. Dhawal,

Background: The natural radionuclides are always present in soil and care needs to be taken to minimize the radiation dose to humans. These radionuclides are mostly gamma ray emitting radionuclides which contribute to the radiation dose in long term behavior of radionuclides in soil. Health hazards associated with natural radioactivity are of great concern and it is necessary to assess risk due...

2007
M. Ngachin

A part of the survey programme on the evaluation of environmental radioactivity in Cameroon has just been initiated. The radioactivity level of soils in a volcanic area in Cameroon was determined and discussed. 30 soils samples were collected from Buea and Limbé cities located in the south-western Cameroon. These two regions are known for theirs volcanic grounds due to the presence of Mount Cam...

Journal: :iranian journal of environmental sciences 0
godfred darko department of chemistry, kwame nkrumah university of science and technology kumasi, ghana eugene ansah department of chemistry, kwame nkrumah university of science and technology kumasi, ghana augustine faanu radiation protection institute, ghana atomic energy commission, accra, ghana david azanu department of chemistry, kwame nkrumah university of science and technology kumasi, ghana

the present paper has determined the radioactivity concentrations, which are due to natural occurrence of radionuclides along with heavy metal concentration in water, sediment, and fish from 2 reservoirs in ghana. heavy metal concentrations in all samples were generally within the who safe limits with the average activity concentrations of 238u, 232th, and 40k in water being respectively 0.42±0...

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