Ultraviolet Irradiation

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Ultraviolet Irradiation


the use of ultraviolet rays in medicine and in the disinfection of water, buildings, and the like. (SeePHOTOTHERAPY for information on ultraviolet irradiation of man.)

Ultraviolet irradiation of animals is used for the prevention and treatment of rickets and osteomalacia, for the treatment of wounds, and for the stimulation of the immunological defenses of the body. Agricultural animals are irradiated with the ultraviolet rays of the sun when they are exercised. During the winter indoor period, group irradiation of animals is administered by means of artificial sources of ultraviolet radiation (bactericidal, mercury-vapor, and erythematous uviol lamps). There is a standard dosage of irradiation for each species of animal. For example, the radiation dose (in millier-hours/m2) is 290-210 for cows, 100-70 for pigs, and 25-20 for chickens. Caged fowls are irradiated 24 hours a day. Large animals are irradiated on a tether in stalls, calves and colts are irradiated in cages, and furbearing animals and piglets are irradiated in special boxes with screens. The radiation source is placed at varying distances, depending on the kind of lamp, the type of disease, and the species of animal.

Ultraviolet irradiation is contraindicated in cases of tuberculosis, leukosis, acute hepatitis, and cardiac decompensation.


Medvedev, I. D. Fizicheskie metody lecheniia zhivotnykh, 3rd ed. Moscow, 1964. Pages 182-265.
References in periodicals archive ?
Irradiation occurred at a distance of 29 cm from the source to the surface in an anti-reflective chamber with ultraviolet irradiation C (UV-C) (Phillips[R], model TUV15W-G15T8 Longe Life, power 15 W) with air circulation at 25 [degrees] C to deplete the ozone, thus avoiding a second elicitor.
Carboxyl groups are generated due to the cut of chemical bonds of the polymer by ultraviolet irradiation on the fluoropolymer layer that is used as a surface layer of substrates.
Some researchers reported that free radicals would be generated by applying ultraviolet irradiation simultaneously with oxidants [15, 20].
Among the topics are clinical biomechanics and the ocular response analyzer in ecstatic disease, pre-operative risk factors and medical and legal considerations of keratoectasia, studies of wavefront aberrometry in corneal ectasia, non-surgical treatment using contact lenses, and corneal cross-linking with riboflavin and ultraviolet irradiation.
Many studies have been carried out on PCBs in organic solvents, utilizing high-energy sources of ultraviolet irradiation [1-5].
Effects of ultraviolet irradiation on genetical inactivation and morphological features of sperm of the Pacific oyster Crassostrea gigas.
The MEDs were recorded for each individual and a treatment schedule was initiated with twice-weekly repetitive ultraviolet irradiation using the solar simulator and appropriate filters noted above, based on the initial MED for each individual.
2], also called ergocalciferol, is manufactured through the ultraviolet irradiation of a substance called ergosterol that comes from yeast.
Ultraviolet irradiation increased vitamin D2 content in edible mushrooms.
Skin Lycopene is Destroyed Preferentially Over f3-Carotene During Ultraviolet Irradiation in Humans," J.
Ultraviolet irradiation of skin can induce apoptosis and, at higher doses, necrosis of cells.

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