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Sensitivity of Biologically Active UV Radiation to Stratospheric Ozone Changes: Effects of Action Spectrum Shape and Wavelength Range¶
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ABSTRACT
Biological action spectra are commonly used to assess health and ecosystem responses to increases in spectral ultraviolet (UV) irradiances resulting from stratospheric ozone (O^sub 3^) reductions. For each action spectrum, a normalized sensitivity coefficient (the radiation amplification factor [RAF]) can be calculated as the relative increase in biologically active UV irradiance for a given relative decrease in the atmospheric O^sub 3^ column amount. We use a detailed radiative transfer model to calculate the dependence of RAF on the O^sub 3^ column amount and the solar zenith angle ...
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The action spectrum for generation of the primary intermediate revealed by ultrafast absorption spectroscopy studies of pheomelanin
; The Action Spectrum for Generation...source, the action spectrum between 300...measured. Similar action spectra are found...shape of the action spectrum differs from...4,5). Action spectra for the photoconsumption...addition, an action spectrum ...
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Action Spectrum Conversion Factors that Change Erythemally Weighted to Previtamin D^sub 3^-weighted UV Doses[dagger]
; ...the erythemal action spectrum. However, a...differences between action spectra give dissimilar...While both action spectra peak in the...the erythemal action spectrum continues throughout...Although both action spectra peak in the...previtamin D^sub 3^ ...
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A Novel Mitochondrial Signaling Pathway Activated by Visible-to-near Infrared Radiation¶
; ...plating (the action spectrum with maxima at...comparative analysis of action spectra allows the conclusions...of using light action spectra instead of absorption...is called an action spectrum; the action spectrum...4). A light action ...
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Diffuse solar UV radiation and implications for preventing human eye damage
; ...MATERIALS AND METHODS Action spectrum. Each of the target...eye has a different action spectrum for UV-induced biological...each of the known action spectra for biological damage...15). The actinic action spectrum has been provided...features of this action ...
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Phytochrome-Mediated Inhibition of Coleoptile Growth in Rice: Age-dependency and Action Spectra[dagger]
; ...with respect to age-dependency and action spectra. Seedlings were irradiated with a pulse...sup -2^) and was FR-irreversible. The action spectra (350-800 nm at 50 nm intervals) obtained...FR of relatively high fluence rate. Action spectra for VLFR, LFR (4) and FR-HIR (11...
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Estimating UV's human cancer risk. (skin cancer risk posed by ultraviolet light increases as stratospheric ozone declines) (Brief Article)
; ...on UV's skin carcinogenicity -- its action spectrum -- in this mouse to account for the...human cancer risk seen in the mouse action spectrum. The finding supports earlier warnings...conventional sunlamps. The new human action spectrum now indicates that the longer UV-A...
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A Monochromatic Action Spectrum for the Photoinduction of the UV-Absorbing Mycosporine-like Amino Acid Shinorine in the Red Alga Chondrus crispus¶
; ABSTRACT To determine the action spectrum for photoinduction of the ultraviolet (UV...of shinorine biosynthesis. The constructed action spectrum indicated that the photoreceptors mediating...regulation of MAA by determining a monochromatic action spectrum for this process. The ...
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Efficacy of Different UV-emitting Light Sources in the Induction of T-cell Apoptosis¶
; ...determined. The regression line of the action spectrum demonstrated a continuous decrease...calculated value according to the action spectrum, which might be attributed to the...spectrum of UV-B light (1). In 1980, an action spectrum study was carried out in patients...
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Action spectrum for cryptochrome-dependent hypocotyl Growth inhibition in Arabidopsis
; Action Spectrum for Cryptochrome-Dependent Hypocotyl...signaling pathways. Nevertheless, no action spectrum for a physiological response shown...been reported. In this work, an action spectrum was determined in vivo for a cryptochrome-mediat...
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Stray radiation scrambles action spectrum
; ...origination a decade ago, the skin cancer action spectrum has given clinicians a view into why wavelengths...recent review of the data that generated the action spectrum, including the Skin Cancer Utrecht-Philadelphia...raises significant questions about the human action spectra that ...
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