Therapeutic and other Applications of X-Rays and Gamma-Rays
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چکیده
منابع مشابه
Preparation and characterization of Epoxy/Lead oxide nano-composite for shield against gamma and X-rays
Polymer nano-composites are a group of materials that represent proper mechanical, chemical, thermal and optical properties due to the presence of certain percentages of a filler in a polymeric matrix. In this study lead oxide nanoparticles were prepared by direct precipitation method. Then the lead oxide-epoxy resin nanocomposite was prepared by mixing (without solvent) with different weight p...
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The years 1895 to 1898 were momentous for their impact on health and human well beings. First, Wilhelm Roentgen noted a glowing fluorescent screen, caused by invisible rays. This event subsequently led to the discovery of X-rays in 1895, and thus the birth of the “atomic ageâ€. Next Becquerel’s investigations of these mysterious rays led to his experiments with uranium salt crystals. He th...
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OR some time it has been generally considered that the production of F chromosomal aberrations in Tradescantia and many other materials is essentially independent of the wave length of the exciting radiation in the region shorter than 1.5 A. This view has not been seriously questioned in recent years and to date has remained one of the fundamental tenets of radiobiology. A number of isolated in...
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Selected topics dealing with X-ray/soft γ-ray emission from accreting black-hole sources are reviewed. The shape of soft γ-ray spectra of Seyferts observed by OSSE can be well modeled by thermal Comptonization. A very strong correlation between the X-ray slope and the strength of Compton reflection in these sources can then be explained by thermal Comptonization in vicinity of the reflecting co...
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ژورنال
عنوان ژورنال: Nature
سال: 1935
ISSN: 0028-0836,1476-4687
DOI: 10.1038/135724a0