Although UVA is generally far less carcinogenic than UVB radiation, it is present more abundantly in sunlight than UVB radiation (>20 times radiant energy) and can, therefore, contribute appreciably to the carcinogenicity of sunlight. In contrast to UVB, UVA radiation is hardly absorbed by DNA. ...
1 Sunlight is composed of three different ultraviolet (UV) radiations, including UVA, UVB, and UVC. Accumulating evidence demonstrates that UVB prominently plays a significant role in promoting aging in comparison to UVA and UVC.1, 2, 3 UVB directly damages the DNA by enhancing the production...
Indeed we recommend the construction of an entirely new computational model that would incorporate all the relevant action spectra including adequate data points in the UV-A, with, perhaps, a simplified version, especially for sunlight, based on only one or two action spectra. Such a model w...
However, it needs to be emphasized that UVA is suspected to play a proportionately larger role in photoageing because of its greater abundance in sunlight54. Future studies exploring the influence of UVA on the ECM composition might contribute to the further understanding of the aging process. In...
26. As these are normally not exposed to sunlight or other sources of UVb radiation, they likely obtain their vitamin D solely via the diet. Whether insects are capable ofde novosynthesis is hitherto unknown. Furthermore, this animal class is highly diverse and contains species with large ...
Dimmable Reptile Heat Lamp with 50W UVA UVB Light Bulb,Rotatable Turtle Basking Spot Light Simulated Sunlight,Suitable for Lizard,Bearded Dragon,Snake,Turtle,Black Add $14.99current price $14.99Dimmable Reptile Heat Lamp with 50W UVA UVB Light Bulb,Rotatable Turt...
英语翻译the Arcadia Bird Lamp uses special UV emitting phosphors to replicate the spectral pattern of sunlight with 12% of the total light output emitted as UV-A and 2.4% UV-B.Arcadia Bird Lamp是种灯的名字,UVA UVB都是紫外线成分
John FrederickJohn Wiley & Sons, Ltd.Photochemistry and PhotobiologyChristiaens F, Moyal D, Seite S, Frederick J (2011) Comments to the article by Kollias, Ruvolo and Sayre entitled "the value of the ratio of UVA to UVB in sunlight". Photochem Photobiol 87:1476-1477...
The mutagenic and carcinogenic properties of sunlight have been attributed to the short-wavelength range (UVB, 290–320 nm) of the solar UV spectrum. Despite being well established that UVA (320–400 nm) can also damage DNA and that it has mutagenic and carcinogenic properties (Stary and Saras...
UV light is further divided into UVA, UVB, and UVC (Hölzle and Hönigsmann, 2005). Here, we report, using behavioral tests in mice, that UVB treatment significantly enhanced the sexual responsiveness of females, which in turn increases male sexual arousal and behavior. Furthermore, UVB ...