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Published in 2019 at "Applied Sciences"
DOI: 10.3390/app9050826
Abstract: The ultraviolet (UV) rays emitted from sunlight greatly influence human health. Excessive exposure to UV rays can be harmful to eyes and skin; however, limited UVB exposure is essential for the synthesis of vitamin D.…
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Keywords:
led lighting;
led light;
uvb led;
light source ... See more keywords