نتایج جستجو برای: natural gamma radiation

تعداد نتایج: 818838  

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...

Journal: :Proceedings of the National Academy of Sciences 1932

ژورنال: Medical Laboratory Journal 2017
Khoshbin khoshnazar , Alireza, Mir, Seyed Mostafa, Sadeghi, Seyed Hossein , Samadian, Esmaeil,

ABSTRACT          Background and Objectives: Exposure to ionizing radiation in modern societies is inevitable and can cause a variety of adverse health effects such as cancer and birth defects. Therefore, a reliable, repeatable and sensitive method is required for evaluation of radiation exposure. The aim of this study was to determine the amount of hist...

Introduction: This study was conducted to measure the gamma emitters (e.g., uranium-238 [238U], thorium-232 [232Th], and potassium-40[40K]) and alpha emitters (e.g., radon-222 [222Rn] and radium), and also to evaluate the radiation hazard indices of radionuclides in parenteral nutrition samples utilized in the hospitals of Iraq. Material and Methods: The measurements were accomplished using ga...

Journal: :iranian journal of radiation research 0
j. ferdous health physics division, atomic energy centre, dhaka, bangladesh a. begum health physics division, atomic energy centre, dhaka, bangladesh a. islam health physics division, atomic energy centre, dhaka, bangladesh

background: the concentrations and distributions of natural and anthropogenic radioactive materials in soils of the site of rooppur nuclear power plant (rnpp) were investigated with the aim of evaluating the environmental radioactivity and radiation hazard. materials and methods: soil samples were collected from 40 locations in and around the proposed site of rooppur power plant and determined ...

Journal: :iranian journal of radiation research 0
ahaskar m. radiation and cancer biology laboratory, department of zoology, university of rajasthan, jaipur, india sharma k.v. radiation and cancer biology laboratory, department of zoology, university of rajasthan, jaipur, india singh s. radiation and cancer biology laboratory, department of zoology, university of rajasthan, jaipur, india r. sisodia radiation and cancer biology laboratory, department of zoology, university of rajasthan, jaipur, india

background: the aim of the present study was to evaluate the radioprotective effect of grewia asiatica fruit pulp extract (gae) on swiss albino mice exposed to gamma radiation. in the present study radioprotective efficacy of grewia asiatica (rich in anthocyanin, carotenes, vitamin c, etc.) was studied against radiation induced biochemical alterations in mice cerebrum. materials and methods: fo...

Anahita Nosrati, Atefeh Naimifar, Mohammad Karami, Seyed Sajad Ale-Nabi,

The aim of present study was to investigate the potential antioxidant and lung protective activities of Sambucus ebulus (SE) against toxicity induced by gamma irradiation. Hydroalcoholic extract of SE (20, 50 and 100 mg/kg) was studied for its lung protective activity. Phenol and flavonoid contents of SE were determined. Male C57 mice were divided into ten groups with five mice per group. Only ...

Journal: :iranian journal of radiation research 0
a. mathur department of zoology, university of rajasthan, jaipur-302004, india j. sharma department of zoology, university of rajasthan, jaipur-302004, india

background: to evaluate the radioprotective potential of punica granatum fruit rind extract (pgre) in mouse testes. materials and methods: adult male mice were divided into four groups. group i was kept without any treatment. group ii was irradiated with 8gy co60 gamma irradiation and group iii was given pgre one hour before irradiation. group iv was fed with pgre at the rate of 10 mg/kg body w...

Journal: :iranian journal of radiation research 0
m. vilić department of physiology and radiobiology, faculty of veterinary medicine, university of zagreb, heinzelova 55, 10000 zagreb, croatia ž. gottstein department of poultry diseases with clinic, faculty of veterinary medicine, university of zagreb, heinzelova 55, 10000 zagreb, croatia i. ciglar grozdanić department of poultry diseases with clinic, faculty of veterinary medicine, university of zagreb, heinzelova 55, 10000 zagreb, croatia k. matanović department of physiology and radiobiology, faculty of veterinary medicine, university of zagreb, heinzelova 55, 10000 zagreb, croatia s. miljanić division of materials chemistry, ruđer bošković institute, bijenička cesta 54, 10000 zagreb, croatia h. mazija department of poultry diseases with clinic, faculty of veterinary medicine, university of zagreb, heinzelova 55, 10000 zagreb, croatia

background: the specific antibody response against newcastle disease virus (ndv) in the blood serum of chickens hatched from eggs exposed to low dose gamma-radiation was studied. materials and methods: two groups of eggs of commercial meat chicken lines were irradiated with the dose of 0.30 gy 60co gamma-rays before incubation and on the 19th day of incubation, respectively. the same number of ...

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