Webb1 sep. 2002 · A particularly important term in clinical photobiology is the standard erythema dose (SED), which is a measure of the erythemal effectiveness of a UV exposure. UV radiation is produced either by heating a body to an incandescent temperature, as is the case with solar UV, or by passing an electric current through a gas, usually vaporized … Webb1 dec. 2012 · The first action spectra for erythema and delayed pigmentation in human skin were determined 90 years ago by Karl Hausser and Wilhelm Vahle in Germany, and since then a number of studies have been undertaken to redefine these action spectra. In this paper we give an overview of the action spectra for erythema and pigmentation that …
Fractional Sunburn Threshold UVR Doses Generate Equivalent …
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The standard erythema dose: a new photobiological concept
WebbThe individual minimum erythema dose (MED) of the protected and unprotected skin – also known as the threshold dose – is determined based on these observations. The ratio of the two values then gives the SPF for the product. Although there is a global standard in place, measurement results may differ from one institute to another. Webb1 maj 2024 · The document specifies the erythema reference action spectrum, ser(), and the standard erythema dose (SED). The problem of dosimetry in skin photobiology lies in the fact that the ability of ultraviolet (UV) radiation to elicit erythema in human skin depends strongly on wavelength, encompassing a range of four orders of magnitude … Webbstandard erythema dose SED standardized unit of measure of erythemal radiation Note 1 to entry: One standard erythema dose (1 SED) is equivalent to an erythemal radiant … the trekker water purification