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Ultraviolet radiation - World Health Organization (WHO) Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light UV radiation comes naturally from the sun, but it can also be created by artificial sources used in industry, commerce and recreation
Ultraviolet radiation - World Health Organization (WHO) Overview Ultraviolet radiation (UVR) can neither be seen nor felt While some people are exposed to artificial UVR sources (e g in medicine, industry and for disinfection and cosmetic purposes), everyone is exposed to solar UVR
Radiation: The ultraviolet (UV) index - World Health Organization (WHO) What is the UV index? a measure of the level of UV radiation; the values of the index range from zero upward - the higher the UVI, the greater the potential for damage to the skin and eye, and the less time it takes for harm to occur; an important vehicle to alert people about the need to use sun protection
Rayonnement ultraviolet - World Health Organization (WHO) Le rayonnement ultraviolet (UV) ne peut être ni vu ni ressenti Alors que certaines personnes sont exposées à des sources artificielles de rayonnement UV (par exemple en médecine, dans l’industrie et à des fins de désinfection et cosmétiques), tout le monde est exposé aux rayons UV solaires
Rayonnement ultraviolet - World Health Organization (WHO) Dans notre environnement, le soleil est de loin la source de rayonnement ultraviolet la plus importante Le soleil émet de la lumière, de la chaleur et des rayons ultraviolets (UV)
Les effets connus des UV sur la santé - World Health Organization (WHO) Le seul effet bénéfique des UV, en particulier des UV-B, est la stimulation de la production de vitamine D Celle-ci a une fonction importante car elle améliore l’absorption du calcium et du phosphore présents dans les aliments et joue un rôle crucial dans le développement du squelette, la fonction immunitaire et la formation des cellules sanguines
Protection against exposure to ultraviolet radiation Overview Following a detailed review of the scientific literature conducted by a WHO Task Group meeting convened under joint sponsorship with the United Nations Environment Programme and the International Commission on Non-Ionizing Radiation Protection, a number of adverse health effects resulting from exposure to UV have been identified that need to be addressed through further research and
The use of loop-mediated isothermal amplification (TB-LAMP) for the . . . TB-LAMP is a manual assay that requires less than one hour to perform and can be read with the naked eye under ultra violet light Following review of the latest evidence, WHO recommends that TB-LAMP can be used as a replacement for microscopy for the diagnosis of pulmonary TB in adults with signs and symptoms of TB