Results 81 to 90 of about 80,730 (306)
How does radiative feedback from a UV background impact reionization?
, 2013 An ionizing UV background (UVB) inhibits gas accretion and photo-evaporates gas from the shallow potential wells of small, dwarf galaxies. During cosmological reionization, this effect can result in negative feedback: suppressing star-formation inside ...
Mesinger, Andrei, Sobacchi, Emanuele
core +1 more source
Characterisation of the p53-Mediated Cellular Responses Evoked in Primary Mouse Cells Following Exposure to Ultraviolet Radiation [PDF]
, 2013 Exposure to ultraviolet (UV) light can cause significant damage to mammalian cells and, although the spectrum of damage produced varies with the wavelength of UV, all parts of the UV spectrum are recognised as being detrimental to human health ...
Allinson, Sarah +2 more
core +2 more sources
Hell's Itch: A Self‐Case Report
JEADV Clinical Practice, EarlyView.ABSTRACT Hell's itch is a severely distressing dermatological condition characterized by the onset of incessant itching and intolerable pain 2–3 days post‐sunburn. It is underdiagnosed and underreported, and no definitive management framework has yet been developed.
Kai Peter Moors, Willem I. Visser
wiley +1 more source
Nature of Versatile Chemisorption on TiC(111) and TiN(111) Surfaces
, 2006 Density-functional calculations on the polar TiX(111) (X = C, N) surfaces show (i) for clean surfaces, strong Ti3d-derived surface resonances (SR's) at the Fermi level and X2p-derived SR's deep in the upper valence band and (ii) for adatoms in periods 1 ...
Lundqvist, Bengt I. +2 more
core +1 more source
Disruption of Vitamin D and Calcium Signaling in Keratinocytes Predisposes to Skin Cancer. [PDF]
, 2016 1,25 dihydroxyvitamin D (1,25(OH)2D), the active metabolite of vitamin D, and calcium regulate epidermal differentiation. 1,25(OH)2D exerts its effects through the vitamin D receptor (VDR), a transcription factor in the nuclear hormone receptor family ...
Bikle, Daniel D +4 more
core +2 more sources
The Kaohsiung Journal of Medical Sciences, EarlyView.ABSTRACT Ultraviolet B (UVB) radiation is a major risk factor for cataract development, but the molecular mechanisms underlying this process, particularly the involvement of regulated cell death pathways such as ferroptosis, remain unclear. Transcriptomic, proteomic, and metabolomic analyses were performed on lens tissues from UVB‐induced cataract rat ...
Fei Xu +4 more
wiley +1 more source
The Photon Underproduction Crisis
, 2014 We examine the statistics of the low-redshift Lyman-alpha forest from smoothed particle hydrodynamic simulations in light of recent improvements in the estimated evolution of the cosmic ultraviolet background (UVB) and recent observations from the Cosmic
Danforth, Charles +11 more
core +1 more source
The contribution of faint AGNs to the ionizing background at z~4 [PDF]
, 2018 Finding the sources responsible for the hydrogen reionization is one of the most pressing issues in cosmology. Bright QSOs are known to ionize their surrounding neighborhood, but they are too few to ensure the required HI ionizing background.
Bonchi, A. +23 more
core +2 more sources
Broadband UVB revisited: Is the narrowband UVB fad limiting our therapeutic options?
Journal of Dermatological Treatment, 2009 Broadband ultraviolet B (BB-UVB) phototherapy has demonstrated efficacy in the treatment of cutaneous disorders including psoriasis, atopic dermatitis, uremic pruritus and idiopathic pruritus. In the last decade, there has been a rapidly escalating process of replacing BB-UVB phototherapy units with narrowband ultraviolet B (NB-UVB) equipment, as ...
Rupa, Pugashetti +2 more
openaire +2 more sources
Progress in Photovoltaics: Research and Applications, EarlyView.This study investigates the UV‐induced degradation of silicon heterojunction cell precursors by isolating the impact of subcell layers under controlled UVA and UVB irradiation. Front hydrogenated amorphous silicon (i/n)a‐Si:H selective layers are identified as key degradation sites, leading to significant losses in minority carrier lifetime and iVoc ...
Hugo Lajoie +7 more
wiley +1 more source