Results 31 to 40 of about 3,374,658 (295)

A radiation driven implosion model for the enhanced luminosity of protostars near HII regions [PDF]

open access: yes, 2006
Context. Molecular clouds near the H II regions tend to harbor more luminous protostars. Aims. Our aim in this paper is to investigate whether or not radiation-driven implosion mechanism enhances luminosity of protostars near regions of high-ionizing ...
Belloche   +30 more
core   +3 more sources

Variations in UV radiation in Chile

open access: yesJournal of Photochemistry and Photobiology B: Biology, 1995
The first observations of UV global radiation in Chile with a portable multichannel radiometer are reported. Four UV wavelengths are included: 305, 320, 340 and 380 nm. Observation latitudes spanning from 18 degrees to 53 degrees S allow an estimation of latitudinal variations in daily maxima for both summer and winter.
Fica Cabrera, Sergio Rafael   +2 more
openaire   +3 more sources

A review on the ability of smartphones to detect ultraviolet (UV) radiation and their potential to be used in UV research and for public education purposes.

open access: yesScience of the Total Environment, 2019
The effects of ultraviolet (UV) radiation on life on Earth have continuously been the subject of research. Over-exposure to UV radiation is harmful, but small amounts of exposure are required for good health.
J. Turner   +5 more
semanticscholar   +1 more source

Insights into a long life without cancer: The case of the bowhead whale

open access: yesMolecular Oncology, EarlyView.
Long‐lived, large‐bodied organisms have evolved powerful anticancer mechanisms that preserve cellular and tissue integrity across extended lifespans. A recent study by Firsanov et al. shows that greater genome stability is a key factor underlying the remarkable longevity and cancer resistance of one such species, the bowhead whale.
Inés Paniagua, Johanna A. Joyce
wiley   +1 more source

On the role of the UV and X-ray radiation in driving a disk wind in X-ray binaries [PDF]

open access: yes, 2001
X-ray heating of the photosphere of an accretion disk is a possible mechanism to produce strong, broad UV emission lines in low mass X-ray binaries (LMXBs).
Blandford R. D.   +6 more
core   +2 more sources

Efficiency of natural substances to protect Beauveria bassiana conidia from UV radiation

open access: yesPest Management Science, 2018
BACKGROUND Solar radiation is assumed to be a major factor limiting the efficacy of entomopathogenic fungi used as biocontrol agents in open field applications.
Deborah Kaiser   +3 more
semanticscholar   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Dynamic Response of Ultra Violet Absorbing in Dunaliella SP [PDF]

open access: yes, 2011
Micosporine-like Amino Acid (MAA) which can be found in fresh water and marine microalgae. its accumulation may have a role as a response to UV exposure. The accumulation of MAA was found in both artificial and solar UV radiation.
Muhaemin, M. (Moh)
core  

Proteome readjustments in the apoplastic space of Arabidopsis thaliana ggt1 mutant leaves exposed to UV-B radiation [PDF]

open access: yes, 2015
Ultraviolet-B radiation acts as an environmental stimulus, but in high doses it has detrimental effects on plant metabolism. Plasma membranes represent a major target for ROS generated by this harmful radiation.
ARRIGONI, GIORGIO   +8 more
core   +2 more sources

UV radiation limited the expansion of cyanobacteria in early marine photic environments

open access: yesNature Communications, 2018
Prior to atmospheric oxygenation, ecosystems were exposed to higher UV radiation fluxes relative to modern surface environments. Iron–silica mineral coatings have been evoked as effective UV radiation shields in early terrestrial settings.
Aleksandra M. Mloszewska   +6 more
semanticscholar   +1 more source

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