نتایج جستجو برای: high natural background radiation areas hnbras
تعداد نتایج: 3505119 فیلتر نتایج به سال:
abstract: the present study is an attempt to find out cultural exophoric references in iranian high-school elt textbooks and touch stone series to compare the frequency of occurrence of such references in these books. the purpose is to find out which of the series of the books under investigation impose a greater referential burden on efl learners as far as their reading comprehension of the ...
There are few available data on radiation levels in the Nigerian environment. Pilot measurements of absorbed dose levels of radiation in several towns in Nigeria were made. Although higher elevated and mine areas showed higher absorbed doses, the levels encountered were within normal limits when compared with data in literature but well below those reported in higher radiation areas of the worl...
introduction natural and artificial radionuclides are the main sources of human radiation exposure, which enter the food chain from the environment. radionuclides can affect human health by transferring from soil to plants and entering the human body. in this research study, we aimed to determine the activity concentrations of radionuclides and calculate the average annual committed effective d...
background: measurement of background radiation is very important from different points of view especially for human health. the aim of this survey was focused on determining the current background radiation in one of the highest altitude regions ( zagros mountains ), chaharmahal and bakhtiari province, in the south west of iran . materials and methods: the outdoors-environmental monitoring exp...
Background: The effect of low dose radiation on immune system is shown. Ionizing radiation can affect cytokine production and polarization of T helper cells. Objective: The current study focused on ionizing radiation in Ukrainian children residing in a contaminated area with clinical irritable bowel syndrome. Method: Our study included 75 rural children population aged 4-18 yrs, who lived in a ...
BACKGROUND Over the past several years our laboratories have investigated different aspects of the challenging issue of the alterations in bacterial susceptibility to antibiotics induced by physical stresses. OBJECTIVE To explore the bacterial susceptibility to antibiotics in samples of Salmonella enterica subsp. enterica serovar Typhimurium (S. typhimurium), Staphylococcus aureus, and Klebsi...
background: in general, measurements of solar ultraviolet (uv) radiation are related to horizontal surfaces. while the humans walking and standing outdoors expose to the natural solar uv radiation, their eyes, cheeks, extremities, trunks, or many other anatomical sites are close to vertical plane and random orient to different directions. in this study, we characterized the diurnal variations...
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