Some Physiological Effects of Radium Rays
نویسندگان
چکیده
منابع مشابه
The Effects of Radium Rays on Metabolism
The view is current in the fiterature on the physiological action of radium radiations that these rays produce their effects by altering the metabolism of the tissues exposed to them. The basis for this view appears to be the observation that exposure to radium changes the rate of cell division and growth. If the term metabolism is to be used in describing the reaction of organized matter to an...
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It has been estimated that 92 per cent of the total radiation emitted by radium in equilibrium with its subsequent products is given off in the form of alpha-rays. This, however, cannot be utilized when the source is enclosed in an ordinary container, because the alpha-rays are absorbed completely by even a small thickness of glass. About 3.2 per cent of the total radiation is emitted in the fo...
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1. The physiological effect upon the eggs of Nereis of homogeneous groups of beta-rays of different velocities is proportional to their ability to ionize air. 2. beta-rays of low velocity produce a greater amount of physiological change than the same number of rays of high velocity. 3. These conclusions are consistent with, but do not prove, the view that the physiological effects of radiations...
متن کاملThe Relative Physiological Effects of E-rays of Different Velocities
Insight into the nature of the action of any reagent upon protoplasm can be gained only through the correlation of its physical and chemical properties with its physiological effects. The present investigation is an attempt to discover whether any quantitative relation exists between the physiological effects of E-rays from radium of different velocities and their physical characteristics. At t...
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Murphy and his collaborators have referred to a difference between the effects of large and small doses of x-rays on the circulating lym-phocytes of the rat, large doses producing a diminution, and small doses an increase in their numbers (1, 2). The dose required for the latter they refer to as a "stimulating" dose. Our own observations (3) upon the effects of moderately penetrating x-rays, ra...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1908
ISSN: 0003-0147,1537-5323
DOI: 10.1086/279008