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By Alan D Martin; Samuel A Harbison
An creation to Radiation safeguard is an obtainable account of the character of the risks provided by means of ionizing radiation and the equipment of defense, for these new to the sector and for the non-specialist.
This publication takes the reader in the course of the basic history to the topic, the technical ideas underlying the keep watch over of radiation risks, the organic results of radiation, and radiation detection and dimension. those are by means of a attention of extra really expert themes together with radiation safety in drugs and within the nuclear strength undefined, radioactive waste administration and radiological emergencies
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Extra resources for An introduction to radiation protection
Stochastic effects, in which the probability of occurrence of the effect increases with dose. 7). 1 Acute radiation effects The acute radiation effects are those that occur within a few weeks after the receipt of a large dose in a relatively short period of time. The effects result from a major depletion of cell populations in a number of body organs caused by cell-killing and the prevention or delay of cell division. The main effects are attributable to bone marrow, gastrointestinal or 32 BIOLOGICAL EFFECTS OF RADIATION neuromuscular damage, depending on the dose received.
If this medium is the human body, or part of it, the rise in temperature is sensed and, if it becomes excessive, avoiding action can be taken by sheltering under a sunshade (shielding), for example, or by moving further away from a fire (distance). However, a dose of ␥ radiation or other nuclear radiation large enough to be lethal to a human being would increase the body temperature by less than one-thousandth of one degree centigrade. The body is therefore unable to sense even very high intensities of these types of radiation.
In many situations the skin is subject to more radiation exposure than most other tissues. This is especially true for ␤-rays and low-energy X-rays. A dose of about 3 Gy of low-energy X-rays will result in erythema and larger exposures may lead to other symptoms such as changes in pigmentation, blistering and ulceration. The levels of exposure of workers and members of the public arising from normal operations in the nuclear energy industry, or from industrial and medical applications of radiation, are far below the levels that would induce early effects.