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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"UV absorber"”.
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Ensuring the Stability of Natamycin on Shredded Cheese
… cheese Natamycin is degraded by ultraviolet (UV) light at wavelengths of 350 nm and below. Typical packaging applications do not provide adequate UV protection causing natamycin to degrade. This work was undertaken to determine the efficacy of UV absorber film to prevent UV light degradation …
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Synthesis of corn-derived carbohydrate derivatives as effective multifunctional sunscreen
… continual exploration of skin aging. From the UVB-induced erythema to the UVA-induced persistent pigment darkening, scientists have used versatile methods to reveal that not only does UVB damage skin but also that longer wavelengths such as UVAIL (290nm ~ 340nm) and UVAL rays (340nm ~ 400nm) …
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Appearance and Spectroscopic Characterization of Automotive Coatings for Forensic Purposes
… identified by Raman spectroscopy. Finally, as UV exposure can alter the chemistry of automotive coatings over time, controlled artificial weathering of clear coats from two major manufacturers was performed at 55°C and 75% relative humidity (RH) with 100% ultraviolet (UV) radiation using the …
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Mechanochemical synthesis and evaluation of rubber-thermoplastic polymer blends
… based on a combination of peroxide decomposer, UV-absorber/screen and free-radical scavenger e.g., HOBP/Cyasorb 1084/Irganox 1076, was shown to be the best photo-antioxidant system. The effect of partial replacement of fresh natural rubber by reclaim rubber (RR)on the properties of NR/PP (60/40) …
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Investigations of catalyst behaviour in the formation of polyurethanes
… of titanium, the final coating is sensitive to UV radiation. The addition of UV absorber and HALS (Hindered Amine Light Stabilizer) overcame the sensitivity of the titanium chelate catalyzed coating when exposed to UV radiation and performed better than the control catalysed with the organotin …
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Improved Properties of Natamycin Upon Formation of Cyclodextrin Inclusion Complexes
… packaging with an ultraviolet light absorber allowed 85.0% natamycin to remain after 14 days of storage under 1000 lux fluorescent lighting at 4 °C. Such dramatic increases in water solubility and light stability will enable natamycin to function as a more effective antimycotic in the …
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Untersuchung der Photoinstabilität von kardiovaskulären Arzneistoffen und Photostabilisierung von Infusionslösungen
… der Befunde wurden Anforderungen an UV-Schutzfilme abgeleitet. Fragen der Photoinstabilität von Arzneistoffen wurden bei den bisher wenig untersuchten Gruppen der Vasodilatatoren und Antiarrhythmika bearbeitet. Neben der Zersetzungsgeschwindigkeit und der Ermittlung des …