Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
|
 |
|
Sliney, D. H., & Wengraitis, S. (2006). Is a differentiated advice by season and region necessary? Progress in Biophysics and Molecular Biology, 92(1), 140–150. Added by: Sarina (2010-01-08 22:03:10) |
| Resource type: Journal Article BibTeX citation key: Sliney2006 View all bibliographic details  |
Categories: Englisch = English Keywords: Ultraviolett = Ultraviolet, Vitamin D = Vitamin D Creators: Sliney, Wengraitis Collection: Progress in Biophysics and Molecular Biology |
Views: 8/826 Views index: % Popularity index: 0.75% |
| Abstract |
|
The ultraviolet radiation component in the solar spectrum varies greatly with season. In the summer, the significant short-wavelength (UV-B) radiation at midday can produce erythema in sensitive skin in less than 20 min in middle latitudes, and yet in winter months, the same midday exposure dose would require hours of exposure. The challenge for public health authorities is to provide simple, understandable messages for sensitive individuals to limit excessive exposure at appropriate times of the day during spring and summer months and yet not to take needless precautions or limit exposure during fall and winter months at mid and circumpolar latitudes. The appropriate exposure for beneficial effects is not possible to achieve at many latitudes during winter months, but is readily achieved in summer months. Simple messages should be tailored to the local times of day, reflecting the locale and season. One simple means to communicate the relative UV-B exposure relates to the length of one's shadow (the “Shadow Rule”). Further challenges are presented when apparently mixed messages would be justified for different skin phototypes.
Added by: Sarina |