Results 121 to 130 of about 2,149,446 (376)
Utilising shade to optimize UV exposure for vitamin D [PDF]
Atmospheric Chemistry and Physics, 2008 Numerous studies have stated that humans need to utilise full sun radiation, at certain times of the day, to assist the body in synthesising the required levels of vitamin D<sub>3</sub>.
D. J. Turnbull, A. V. Parisi
doaj
Bioinorganic Chemistry and Applications, 2016 The photocatalytic degradation of the chemical dye AZO and dye effluents in different time duration has been investigated using biologically synthesized silver nanoparticles.
R. Mariselvam +4 more
doaj +1 more source
The UV spectrum of the Ultracool Dwarf LSR J1835+3259 observed with the Hubble Space Telescope [PDF]
, 2018 An interesting question about ultracool dwarfs recently raised in the literature is whether their emission is purely internally driven or partially powered by external processes similar to planetary aurora known from the solar system. In this work we present Hubble Space Telescope observations of the energy fluxes of the M8.5 ultracool dwarf LSR J1835 ...
arxiv +1 more source
Advanced Functional Materials, EarlyView.The phenyl‐linked self‐assembled monolayer exhibits robust intrinsic stability and hole extraction capability compared to the alkyl‐linked counterparts, thus facilitating the device stability with T80 over 1000 h and efficiency of 19.7% in advancing organic solar cells.
Nan Zhang +11 more
wiley +1 more source
A possible correlation between maxima of the far ultraviolet solar irradiance and central meridian passages of solar magnetic sector boundaries [PDF]
Satellite observations of the sun over almost 5 yrs show that principally two UV active longitudes have persisted over a significant portion of this observational period.
Heath, D. F., Wilcox, J. M.
core +2 more sources
The magnetic future of the Sun
, 2017 We analyze space- and ground-based data for the old ($7.0\pm0.3$~Gyr) solar analogs 16 Cyg A and B. The stars were observed with the Cosmic Origins UV Spectrographs on the Hubble Space Telescope (HST) on 23 October 2015 and 3 February 2016 respectively ...
Egeland, RIcky +4 more
core +1 more source
Advanced Functional Materials, EarlyView.This study examines the surface characteristics of AlInP (001), crucial for advanced solar cells and photoelectrochemical devices. Using theoretical modeling and experiments, it identifies how phosphorus‐rich and indium‐rich surfaces create mid‐gap states that pin the Fermi level and influence ultrafast electron dynamics.
Mohammad Amin Zare Pour +11 more
wiley +1 more source
Photochemical and Photobiological Sciences, 2014 Climate change modulates the effects of solar UV radiation on biogeochemical cycles in terrestrial and aquatic ecosystems, particularly for carbon cycling, resulting in UV-mediated positive or negative feedbacks on climate.
David Erickson +3 more
semanticscholar +1 more source
Flexible Leaf‐Like Fuel Cell From Plasmonic Janus Nanosheet
Advanced Functional Materials, EarlyView.A flexible leaf‐like fuel cell is fabricated by conductive gold nanowire sponge‐supported plasmonic Janus nanosheet, which can generate a power of 8.93 mW cm⁻2 with less than 10% performance deterioration even being bent or twisted. Further assembly in a tree‐like layout demonstrates omnidirectional light harvesting capability and wind resistance ...
Yifeng Huang +3 more
wiley +1 more source
High intensity ultraviolet radiation induced changes in aquatic arthropod with retene and riboflavin
Environment Conservation Journal, 2011 Ozone depletion is resulting into increase in ultraviolet radiation level in the world. Exposure to UV radiation has been found to have negative effects on aquatic and terrestrial organisms.
Sunil Kumar, Priyanka Kumari
doaj +1 more source