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The toxic effects of UV from natural sunlight and therapeutic artificial lamps are a major concern for human health. Skin surface lipids, including unsaturated lipids such as squalene , sebaleic acid, linoleic acid , and cholesterol can be a subject of oxidation by singlet oxygen and ozone as well as free radicals.
An open (single envelope) CFL [12] An encapsulated/closed (double envelope) CFL. Some fluorescent lamps emit ultraviolet radiation. [citation needed] The Health Protection Agency of the United Kingdom has conducted research concluding that exposure to open (single envelope) compact fluorescent lamps (CFLs) for over 1 hour per day at a distance of less than 30 cm can exceed guideline levels as ...
The UV-B flux is 2–4 times greater during the middle 4–6 hours of the day, and is not significantly absorbed by cloud cover or up to a meter of water. [47] Ultraviolet light, specifically UV-B, has been shown to cause cataracts and there is some evidence that sunglasses worn at an early age can slow its development in later life. [18]
According to Beaumont Health, sugar alcohol is a reduced-calorie sweetener. It is a carbohydrate with a chemical makeup similar to sugar — meaning it can activate sweetness receptors on your ...
Lighter Side. Politics. Science & Tech. Sports. Weather. 24/7 Help. For premium support please call: ... “At some points in your life, you’re going to eat more sugar, sodium or fat. But your ...
Just one medium bell pepper contains more than an entire day’s worth of vitamin C. To get your fill, try our Stuffed Peppers for dinner this week. Related: 6 Foods With More Vitamin C than an ...
UV LED Nail Lamp. The handle on this UV lamp makes it a breeze to seamlessly move from room to room. Plus, it uses a dual light source to dry a wide variety of gel polish—from Shellac to more ...
Older, non-commercial fluorescent compounds include umbelliferone, which absorbs in the UV portion of the spectrum and re-emit it in the blue portion of the visible spectrum. A white surface treated with an optical brightener can emit more visible light than that which shines on it, making it appear brighter.