Results 341 to 350 of about 2,375,680 (397)
Some of the next articles are maybe not open access.
Contact Dermatitis, 1980
At 51 departments where work is being done in ultraviolet radiation for sterilization purpose (sterilamps). the light intensity was measured at 254 nm and at 300–400nm. A limit of 0.25 μW/cm2 at 254 nm has been set. In several of the workplaces this limit was exceeded without any decrease in the number of colony forming units, according to the 940 ...
openaire +3 more sources
At 51 departments where work is being done in ultraviolet radiation for sterilization purpose (sterilamps). the light intensity was measured at 254 nm and at 300–400nm. A limit of 0.25 μW/cm2 at 254 nm has been set. In several of the workplaces this limit was exceeded without any decrease in the number of colony forming units, according to the 940 ...
openaire +3 more sources
Ultraviolet Radiation and Exobiology
2001In comparison to the Earth, extraterrestrial environments possess quite different UV radiation regimes, both in terms of absolute flux and in terms of spectral quality (Horneck et al. 1984; Horneck 1993). For example, the moon has no atmosphere and thus its UV regimen is determined solely by the extraterrestrial spectrum.
openaire +3 more sources
Generation of Ultraviolet and Vacuum Ultraviolet Radiation
1974The paper describes the use of nonlinear optical techniques for the generation of coherent radiation at ultraviolet, vacuum ultraviolet, and soft x-ray wavelengths. Mixtures of metal vapors and inert gases, and other mixed gas systems, allow generation to regions of the spectrum where nonlinear optical crystals are opaque; and also allow generation at ...
G. C. Bjorklund +4 more
openaire +2 more sources
[23] Dosimetry of ultraviolet a radiation
2000Publisher Summary Dosimetry is the science of radiation measurement. There are two principal reasons for measuring ultraviolet A (UV-A) radiation: to allow consistent exposure of cells and tissues over many months and years within a local laboratory and to allow the results of irradiations made in different laboratories to be published and compared ...
openaire +3 more sources
1985
The skin and eyes of humans are frequently exposed to ultraviolet radiation (UVR) from the sun either during everyday activity or during intentional exposure to achieve tanning. Exposure may also occur from any of a number of artificial sources which emit UVR.
openaire +2 more sources
The skin and eyes of humans are frequently exposed to ultraviolet radiation (UVR) from the sun either during everyday activity or during intentional exposure to achieve tanning. Exposure may also occur from any of a number of artificial sources which emit UVR.
openaire +2 more sources
Ultraviolet Radiation and the Eye
1991A number of in-vitro laboratory studies have shown that ultraviolet radiation (UVR) can produce optical changes in lens proteins that could explain at least one causal factor in some forms of cataractogenesis [1–7]. Cataracts have also been produced in rabbits from acute exposure to UVR in the 295–320 nanometer (nm) UV spectral band [8–10 ...
openaire +2 more sources
Visible and Ultraviolet Radiation [PDF]
, 1984 Visible radiation and ultraviolet radiation are scattered by air molecules, cloud particles, and other aerosols, being absorbed by ozone but not by an aqueous aerosol. The optical parameters regulating the above processes - the scattering coefficient σλ, the absorption coefficient αλ, and the scattering functions γλ(φ) - are continuous functions of the
openaire +1 more source
Photoprotection Beyond Ultraviolet Radiation: A Review of Tinted Sunscreens.
Journal of American Academy of Dermatology, 2020A. Lyons +4 more
semanticscholar +1 more source
Radiometry of Ultraviolet Radiation
1978It is of utmost importance in any field of research to control, quantify, and objectively describe the conditions of an experiment. Much of the literature in photo-biology lacks adequate, and occasionally any, measurement of the radiation. This is no longer acceptable.
Donald G. Pitts +3 more
openaire +2 more sources