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Hace 1 día · Ultraviolet absorbers are molecules used in organic materials (polymers, paints, etc.) to absorb UV radiation to reduce the UV degradation (photo-oxidation) of a material. The absorbers can themselves degrade over time, so monitoring of absorber levels in weathered materials is necessary. [citation needed]
Hace 2 días · Su resistencia a los rayos ultravioleta (UV) asegura que la exposición al sol no degrade el material, garantizando una durabilidad prolongada. Aplicaciones Comunes. Los revestimientos elastoméricos se utilizan en una variedad de aplicaciones debido a sus propiedades de alivio del estrés térmico e impermeabilización:
Hace 16 horas · Pollution from dye-containing industrial wastewater is a major health hazard in many nations, necessitating modern remediation approaches. Herein, zinc oxide (ZnO) was employed to degrade methyl orange (MO) as an organic dye pollutant under UV light irradiation. The performance was observed experimentally and theoretically under optimized conditions including the pH (11), the concentration of ...
Hace 3 días · El índice ultravioleta (UV) es una medida internacional de la intensidad de la radiación UV del sol en un lugar y momento específicos. Este índice ayuda a...
Hace 3 días · It should be noted that the UV light used in these studies is in the UVA spectrum (365 nm), and not the deep-UV that is more energy intensive and sometimes used in literature to degrade POPs. The overall rate of UV–Fenton degradation is also dependent on the initial concentration of the POP to be degraded.
Hace 2 días · Ultraviolet (UV) radiation from the sun poses significant risks to eye health. It can potentially lead to various conditions, such as cataracts, macular degeneration, and even eye cancer. One way to safeguard your eyes from these harmful effects is by wearing sunglasses with proper UV protection.
Hace 3 días · Two low-pressure ultraviolet (UV) lamps at 185/254 nm with sodium persulfate in a pilot UV device were utilized for the degradation of reactive red (B-3BF) dye wastewater compared with two UV lamps at 185/185 nm and two UV lamps at 254/254 nm. The degradation performances of UV irradiation (254/185 nm) with sodium persulfate under different degradation times, flow rates, initial pH, initial ...
