Climatology of UV-A, UV-B, and erythemal
radiation at the earth's surface, 1979-2000 (Technical Note #NCAR/TN-474).
The relationship between erythemal
UV and ozone derived from spectral irradiance measurements.
The minimum erythema dose (MED) is the minimum input of UVR necessary to produce an erythemal
reaction per square unit of surface area of skin after 24 hours of exposure.
Variations of erythemal
ultraviolet irradiance and dose at Tartu/Toravere, Estonia.
For example, a female with Fitzpatrick skin type II (Caucasian; Fitzpatrick 1988) with a whole-body exposure to one minimum erythemal
dose (MED), or the amount of UV needed to barely turn skin pink after 24 hr, in a tanning bed with a weighted spectral distribution similar to the midday summer sun at approximately 35 [degrees] N produces the equivalent of an oral dose of approximately 15,500 IU vitamin D2 or [D.
25 MEDs (minimal erythemal
dose) of UV light and the degree of erythema or skin reddening was evaluated both before and 24 hours after irradiation, at weeks 0, 4 and 12.
Field-based measurements of personal erythemal
ultraviolet exposure through a common summer garment.
UPF indicates how much longer the person can stay in the sun with the fabric covering the skin as compared with the uncovered skin to obtain same erythemal
The UVB flux employed for this study is the total UVB convoluted with the erythemal
action spectrum (i.
Day 1 -- determination of Minimal Erythemal
A person wearing a bathing suit and being exposed to an amount of sunlight that causes a slight pinkness to the skin (1 minimal erythemal
dose [MED]) receives the equivalent of between 10,000 to 20,000 IU of vitamin [D.
Treatment with NB-311 lamps reduces the potential for an erythemal
response, while still providing an efficacious treatment modality.
Slusser, Methodology for deriving clear-sky erythemal
calibration factors for UV Broadband Radiometers, of the U.
Despite the fact that the assessment of the light sensitivity (minimal erythemal
dose, chromametry) of the skin did not show any statistically significant differences between the Seresis and the placebo group, a clear statistical trend, however, could be demonstrated, i.
The solar-simulated UV produced an increase, whereas both the suberythemal and erythemal
UVA produced a persistent reduction at 12, 24, and 36 weeks.