Nov 5, 2015 · The effect of UV irradiation on different wood species represents an open subject of research. Six species, half softwoods and half hardwoods, all important for both historic and modern furniture, were subjected to the action of artificial UV radiation at a constant temperature of 40 °C. The species were: fir (Abies alba), pine (Pinus sylvestris), larch (Larix decidua), ash (Fraxinus

Nov 9, 2017 · Ultraviolet (UV) light is an electromagnetic radiation varying in its wavelength from 100–400 nm. At one side of this band is visible light which is longer than 400 nm starting with blue light and on the other is x-rays which is of shorter length than 100 nm. Two major sources of UV lights are: the sun and the man-made UV lamps.

Overview. 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. The UV region covers the wavelength range 100-400 nm and is UV curing is a speed curing process in which high -intensity ultraviolet (UV) light is used to create a photochemical reaction that instantly cures inks, adhesives, and coatings. The spectra available for UV curing are quite varied and may extend into the blue light spectrum. Commonly UV Sources in Laboratories.
Aug 8, 2023 · Photodermatoses may also occur following indoor exposure to artificial sources of UVR like fluorescent lamps or visible radiation. Genomic instability due to DNA repair deficiency disease causes pigmentary changes and high risk (1000 times normal) of skin tumors including basal cell carcinoma, squamous cell carcinoma, and melanoma.
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Jan 1, 2010 · 12.12 Conclusion. There is mounting evidence that the scalp, hair shafts, and hair growth are affected by sunlight and any source of UV. Multiple biological mechanisms appear to be operative. The diversity of the induced changes ranges from aesthetic concerns to hair loss and carcinogenesis as well.
However, there are three types of UV radiation – UVA, UVB, and UVC – which have different wavelength ranges, and the intensity at each wavelength is distributed differently for the sun and for various artificial sources. Solar UV radiation at ground level, for instance, is primarily made up of UVA, with some UVB and no UVC, and varies with
Jun 7, 2013 · UV radiation (UV) is classified as a “complete carcinogen” because it is both a mutagen and a non-specific damaging agent and has properties of both a tumor initiator and a tumor promoter. In environmental abundance, UV is the most important modifiable risk factor for skin cancer and many other environmentally-influenced skin disorders. However, UV also benefits human health by mediating
The main cause is exposure to ultraviolet (UV) radiation from the sun or artificial sources such as solariums. There are other factors that can increase your risk of developing skin cancer, including: skin type. having many moles and freckles – particularly many atypically shaped moles. having a personal or family history of skin cancer.
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    • artificial sources of uv radiation