action spectrum

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  • noun

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the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation

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The ASCFs account for the differences between wavelength contributions estimated by the erythemal action spectrum and the previtamin D action spectrum toward previ-tamin [D.
1972) Significance of Enhancement for Calculations Based on the Action Spectrum for Photosynthesis.
Polymorphous light eruption: Action Spectrum and photoprotection, J.
In the following, we discuss common sources of error in UV radiation measurements, including out-of-band contributions to the signal, non-ideal geometric properties (non-ideal cosine response in the meters), and poor matching to a defined action spectrum.
In general, a substance is responsible for an observed chemical process when the action spectrum matches the absorption spectrum.
The threshold data for the acute effects of erythema and photokeratitis were combined on one graph, and an envelope (or hazard) curve was drawn around the collective data so that a single-envelope action spectrum could be applied to both skin and eye exposure (25) [ILLUSTRATION FOR FIGURE 2 OMITTED].
Nomir Medical Technologies, a leader in the development of optical energy technologies for anti-infective medical applications, announced today that the Company will present an abstract detailing two years of successful scientific research into the antibacterial action spectrum of its Noveon([R]) dual-wavelength optical antimicrobial system.
The first idea is to commercialize solid-state light engines, which can be directed to contain the proper circadian action spectrum when used during the day, and to remove these shorter wavelengths at night.
The mechanism of skin injury has been closely co-related to the phenomenon that the action spectrum for UVB erythema has been found to be close to the absorption spectrum for DNA after adjusting for the absorbance of incident energy by the stratum corneum.
So he and Van der Leun fine-tuned data on UV's skin carcinogenicity -- its action spectrum -- in this mouse to account for the longer path UV rays must traverse through human skin.
Eric Bornstein, said, "The granting of this patent further differentiates Nomir as a photobiology company, as the Noveon's unique action spectrum is proven safe, and is well beyond the mutagenic ultraviolet or photo-thermal ablative wavelengths and power ranges traditionally used for anti-infective indications.
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