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Related to Irradiation: gamma irradiation, Blood Irradiation


Subjection of a biological system to sound waves of sufficient intensity to modify their structure or function.
The exposure of a material, object, or patient to x-rays, gamma rays, ultraviolet rays, or other ionizing radiation.
An optical illusion which makes bright objects appear larger than they really are.



in physiology, the spread of excitation or inhibition in the central nervous system. Irradiation plays an important part in cerebrocortical activity. The irradiation of excitation is manifested most distinctly after strong stimulation, when nerve centers usually not involved in a reflex response are drawn into the process. For example, moderate pain inflicted on the skin of an animal’s foot causes the paw to flex in the talocalcaneal joint. Increasing the force of stimulation causes the leg to flex in the knee and hip joints. In studying the effect of an inhibitory conditioned stimulus, I. P. Pavlov showed that inhibition can also spread (irradiate) in the cells of the cerebral cortex.



the apparent enlargement of the dimensions of white (light) objects against a black (dark) background (given the comparatively great brightness of the white object) or, conversely, the apparent diminution of the dimensions of black objects against a white background. (The first instance is called positive irradiation; the second, negative.)

As a result of irradiation, a thin black thread or wire observed against a bright flame seems to be interrupted in that segment, and the bright crescent of the new moon seems to have a larger diameter than the ash-gray disk of the moon seen simultaneously with it. The degree of irradiation increases when the brightness of the light background or object increases. Irradiation is caused by optical defects of the eye (spherical and chromatic aberrations), diffraction phenomena in the eye, and imperfect fixation of the eye on the objects observed.


Kravkov, S. V. Glaz i ego rabota: Psikhofiziologiia zreniia, gigiena osvesh-cheniia, 4th ed. Moscow-Leningrad, 1950. (Includes bibliography.)
References in periodicals archive ?
The study included 79 patients who had been free of Hodgkin lymphoma for at least 10 years and had received mediastinal irradiation 20 years ago, plus 273 controls without Hodgkin lymphoma or irradiation.
Varieties were arranged as main plots (Sigupai, Cantek Manis, Rom Mokot, Ramos Mirah, and Sanbei) and gamma-ray irradiation dose as subplots (without irradiation, 250 Gy, 500 Gy).
Therefore this study was designed to evaluate the impact of ionizing radiations, including gamma (g) and electron (e) beam, on beef jerky through detection of induced hydrocarbons and develop any possible irradiation markers for determination of irradiated food samples and consequently to enhance their global trade.
PAN precursors were winded around glass tubes, and then were exposed to [gamma] ray irradiation from a [sup.
Here's how it does work: At a special irradiation plant--there are just a handful in the United States--workers zap food with a machine similar to the kind that administers radiation to cancer patients.
Gamma Irradiation Technology can not only enhance shelf life of fruits, vegetables and other food items but could also help overcome the issue of fruit fly in mangos which had badly affected the export of Pakistani mango".
It appears that the most likely use of irradiation in fruits and vegetables is to control insects in those commodities for which there is no effective alternative method.
ISO 14470:2011, Food irradiation - Requirements for the development, validation and routine control of the process of irradiation using ionizing radiation for the treatment of food, not only provides requirements, but also guidance for meeting them.
A: Food irradiation is sometimes called "cold pasteurization.
A typical coil irradiation system is shown in Photo 1.
Treatment for early-stage breast cancer with partial breast irradiation is currently under investigation in a multi-institutional, randomized controlled trial, NS-ABP B-39.
Irradiation of dairy product, however, has been generally considered to be unfeasible as the high fat content in these products can lead to development of the undesirable off-flavors after irradiation (Urbain, 1986).