Results 11 to 20 of about 2,375,680 (397)
Hawking radiation and ultraviolet regulators [PDF]
Physical Review D, 1996 Polchinski has argued that the prediction of Hawking radiation must be independent of the details of unknown high-energy physics because the calculation may be performed using `nice slices', for which the adiabatic theorem may be used. If this is so, then any calculation using a manifestly covariant --- and so slice-independent --- ultraviolet ...
C.P. Burgess, N. Hambli
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Photochemistry and Photobiology, 2020 Germicidal lamps that emit primarily 254 nm ultraviolet radiation (UV) are routinely utilized for surface sterilization but cannot be used for human skin because they cause genotoxicity.
Nozomi Yamano +10 more
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Ultraviolet radiation influences perch selection by a neotropical poison-dart frog. [PDF]
PLoS ONE, 2012 Ambient ultraviolet-B radiation can harm amphibian eggs, larvae and adults. However, some amphibians avoid UV-B radiation when given the opportunity. The strawberry poison dart frog, Oophaga pumilio, is diurnal and males vocalize throughout the day in ...
Lee B Kats +4 more
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Skin pigmentation and its control: From ultraviolet radiation to stem cells
Experimental Dermatology, 2020 In the light of substantial discoveries in epithelial and hair pigmentation pathophysiology, this review summarizes the current understanding of skin pigmentation mechanisms. Melanocytes are pigment‐producing cells, and their key regulating transcription
J. M. Yardman-Frank, D. Fisher
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Ultraviolet Radiation From a Plant Perspective: The Plant-Microorganism Context
Frontiers in Plant Science, 2020 Ultraviolet (UV) radiation directly affects plants and microorganisms, but also alters the species-specific interactions between them. The distinct bands of UV radiation, UV-A, UV-B, and UV-C have different effects on plants and their associated ...
L. Vanhaelewyn +3 more
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Solar Extreme and Far Ultraviolet Radiation Modeling for Aeronomic Calculations
Remote Sensing, 2021 Modeling the upper atmosphere and ionospheres on the basis of a mathematical description of physical processes requires knowledge of ultraviolet radiation fluxes from the Sun as an integral part of the model.
Anatoliy A. Nusinov +2 more
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Ultraviolet Radiation and Melanomagenesis: From Mechanism to Immunotherapy
Frontiers in Oncology, 2020 Melanoma is the deadliest form of skin cancer, and nearly 90% of melanomas are believed to be caused by ultraviolet radiation (UVR), mainly from sunlight.
Xiaoying Sun +4 more
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Molecules, 2022 Ellagic acid is a natural polyphenol found in various fruits and vegetables. Numerous studies have shown that ellagic acid has beneficial effects on human health.
Shuju Bai +6 more
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Chronic Diseases and Injuries in Canada, 2010 The major source of ultraviolet radiation is solar radiation or sunlight. However, exposure to artificial sources particularly through tanning salons is becoming more important in terms of human health effects, as use of these facilities by young people, has increased.
Richard P, Gallagher +3 more
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Ultraviolet radiation and cyanobacteria [PDF]
Journal of Photochemistry and Photobiology B: Biology, 2014 Cyanobacteria are the dominant photosynthetic prokaryotes from an ecological, economical, or evolutionary perspective, and depend on solar energy to conduct their normal life processes. However, the marked increase in solar ultraviolet radiation (UVR) caused by the continuous depletion of the stratospheric ozone shield has fueled serious concerns about
Jae-Sung Rhee +10 more
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