Gamma Radiation
نویسندگان
چکیده
منابع مشابه
X-Radiation and Gamma Radiation
Ionizing radiation is electromagnetic radiation that has sufficient energy to remove electrons from atoms. Ionization results in the production of negatively charged free electrons and positively charged ionized atoms. Ionizing radiation can be classified into two categories: photons (X-radiation and gamma radiation) and particles (alpha and beta particles and neutrons). Five types or sources o...
متن کاملShielding of Gamma Radiation
In the discussion that follows, we assume that gamma rays are the radiation of interest. The principles discussed also apply to monoenergetic x rays; in many cases of concern in x-ray shielding, however, the photons are produced in the bremsstrahlung process that yields a wide and continuous distribution of photon energies. Specialized shielding approaches have been developed to carry out shiel...
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The tripeptide glutathione (L-y-glutamyl-L-cysteinylglycine) (GSH) is the predominant low-molecular-weight thiol in many organisms and has been proposed to protect cells from oxidative damage such as that formed by H202 and ionizing radiations (19). Escherichia coli deficient in GSH because of mutations in the gshA gene was found previously (3) to exhibit normal resistance to X irradiation in t...
متن کاملGamma background radiation in Yazd province A preliminary report
ABSTRACTBackground: There are relatively rich uranium mines in regions of Saghand and Bafgh in Yazd province. This survey was carried out to provide a map of ambient gamma radiation of Yazd province and the probable effects of the existence of these mines on background radiation dose rates.Materials and Methods: The measurements of the outdoor and indoor–environmental exposures (including cosm...
متن کاملNatural Gamma Radiation in Primary Schools of Zanjan Province
Background: Environmental gamma ray refers to the gamma radiation from terrestrial sources and building materials. In enclosed spaces radiation can become a health hazard leading to potential increase in the rates of lung cancer. The goal of this study is to assess the exposure to natural gamma radiation of children in the schools of Zanjan province. Method:The natural gamma radiation was asse...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1932
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.18.8.543