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Radiation: Ultraviolet (UV) radiation - World Health Organization …
Mar 9, 2016 · UVC (100-280 nm). Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's …
Ultraviolet radiation - World Health Organization (WHO)
Jun 12, 2025 · UVC (100-280 nm). As sunlight passes through the atmosphere, all UVC and approximately 90% of UVB radiation is absorbed by ozone, water vapour, oxygen and carbon …
Radiation: The known health effects of ultraviolet radiation
Jul 16, 2024 · The only beneficial effect of UV, triggered by UV-B, is the stimulation of the production of vitamin D. Vitamin D has an important function in increasing calcium and …
Radiation: The ultraviolet (UV) index - World Health Organization …
Jun 20, 2022 · 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 …
Webinar: Disinfection using Ultraviolet Radiation
Dec 17, 2021 · BackgroundThe ability of ultraviolet radiation to disinfect water, surfaces and air has been known for over a hundred years. In the last few decades, the primary application …
Ultraviolet radiation - World Health Organization (WHO)
Jun 21, 2022 · 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 …
Radiation: Ultraviolet (UV) radiation and skin cancer
Oct 16, 2017 · Due to their relative lack of skin pigmentation Caucasian populations generally have a much higher risk of getting non-melanoma or melanoma skin cancers than dark …
Rayonnement ultraviolet - World Health Organization (WHO)
Les UVC, de courte longueur d’onde, sont les UV les plus nocifs, mais ils sont complètement filtrés par l’atmosphère et n’atteignent pas la surface de la terre. Les UVB, de longueur d’onde …
Mythbusters - World Health Organization (WHO)
FACT: Alcohol-based sanitizers are safe for everyone to use Alcohols in the sanitizers have not been shown to create any relevant health issues.
New guidance aims to reduce bloodstream infections from …
May 9, 2024 · The World Health Organization (WHO) publishes the first global guidelines to prevent the occurrence of bloodstream and other infections caused by use of catheters placed …
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