Influence of UVB, UVA and UVA1 irradiation on histamine release from human basophils and mast cells in vitro in the presence and absence of antioxidants. Photochem. Photobiol. 2003;77:531-534.Kronauer C, Eberlein-Konig B, Ring J, Behrendt H. Influence of UVB, UVA and UVA1 irradiation on...
UVA rays have longer wavelengths, while UVB rays have shorter wavelengths. Both types can harm the skin, but they affect it differently; UVA rays penetrate deeper into the skin and can cause aging, while UVB rays are primarily responsible for sunburns and increase the risk of skin cancer. ...
The responses of the autochthonous soil and aquatic organism, Pseudomonas aeruginosa to UV radiation wavelengths (UVA, 320-400 nm, and UVB, 280-320 nm) has been investigated in this study. P. aeruginosa recA mutants were found to be more sensitive to both UVA and UVB radiation than were the...
UVA测试与UVB测试的关系主要在于反映了不同波长的紫外线对粉末涂料的不同影响,一般来说,UVA测试更能模拟自然环境中的紫外线,因为UVA占阳光中紫外线的90%以上,而UVB只占5%左右。 UVA测试更能反映粉末涂料的长期耐候性能,因为UVA能穿透到粉末涂料的深层,造成粉末涂料的老化、变色、开裂等现象。UVB测试更能反映粉末涂料...
UVB rays are shorter wavelengths. These shorter UV rays are connected with sunburns and other immediate forms of skin damage. While UVA and UVB rays may impact the skin in different ways, direct exposure to either form of UV radiation has the potential to damage skin on the cellular level....
UVB radiation (wavelengths from 290 nm to 320 nm) causes sunburn,tanning, photoaging, and skin cancer induction, while UVA radiation(wavelengths of 320 nm to 400 nm) is associated with the immediatetanning reaction, photoaging, and tumor promotion. ...
and the unclear role of specific UV wavelengths in the development of melanoma have renewed interest in defining the adverse effects of UVA exposure. Like UVB, UVA can cause nonmelanoma skin cancers, but the tumors take longer to develop and require much larger doses of light. The mutations ...
DNA lesions induced by UV A1 and B radiation in human cells: Comparative analyses in the overall genome and in the p53 tumor suppressor gene Immuno-dot blot analysis identified the cis-syn cyclobutane pyrimidine-dimer (CPD) as a distinctive UVB- induced lesion and confirmed its formation in the...
UVA (wavelengths 320–400 nm) comprises more than 95% of the solar UV radiation that reaches Earth, making it far more abundant than UVB (280–320 nm) that accounts for the remainder. Most of UVB and all of UVC (wavelengths below 280 nm) are removed by the ozone layer and these short...
wavelengths, UVB and UVC, have been extensively investigated in terms of direct effects on DNA.1 UVA was initially perceived as innocuous to skin however, numerous reports recently have demonstrated cytotoxic effects after exposure of eukaryotic cells to UVA radiation as a consequence of oxidative ...