Ultraviolet light irradiation

Warren, J.B., Loi, R.K. and Coughlan, M.L. (1993). Involvement of nitric oxide synthase in the delayed vasodilator response to ultraviolet light irradiation of rat skin in vriv. Br. J. Pharmacol. 109, 802-806. 

Ronai, Z.A., M.E. Lambert, and I.B. Weinstein. 1990. Inducible cellular responses to ultraviolet light irradiation and other mediators of DNA damage in mammalian cells. Cell Biol. Toxicol. 6 105-126. 

Fisher, M. S. and Kripke, M. L., Systemic alteration induced in mice by ultraviolet light irradiation and its relationship to ultraviolet carcinogenesis, Proc. Natl. Acad. Sci. USA. 74, 1688-1692, 1977. 

Archer, T.E., Nazer, I.K., and Crosby, D.G. Photodecomposition of endosulfan and related products in thin films by ultraviolet light irradiation, J. Agric. Food Chem., 20(5) 954-956, 1972. 

Some other bridged binuclear complexes undergo photoreduction upon irradiation with ultraviolet light. Irradiation of... 

Southern pine with a dual treatment of chemical modification with butylene oxide or butyl isocyanate followed by lumen-fill treatment with methyl methacrylate, or southern pine impregnated with methyl methacrylate and polymerized in situ, resulted in modified woods that were resistant to accelerated weathering and to ultraviolet light alone. Physical, chemical, and microscopic changes occurring as a result of ultraviolet light irradiation are described. 

The photoresist was acrylate-based Riston 3600 series supplied by E.I. du Pont de Nemour and Company, Wilmington, Delaware. This is a resist which can be developed in aqueous medium. This resist is negative working in the sense that it would predominantly undergo crosslinking polymerization upon ultraviolet light irradiation. 

Reisch J, Zappel J, Rao AR, Henkel G. Dimerisation of levonorgestrel in solid state ultraviolet light irradiation. Pharm Acta Helv 1994 69 97-100. 

NiFz was oxidized at 20°C, to by sunlight- or ultraviolet light-irradiated Fj in liquid anhydrous hydrogen fluoride (aHF)... 

The anti-rachitic factors resulting from the ultraviolet irradiation of cholesterol (40) and ergosterol (41) namely vitamin Dj (42) cholecalciferol and Dj, ergocalciferol (43) respectively are important dietary materials the chemistry of which was only elucidated by the investigations of many chemists (ref.41). Vitamin Dj is most easily derived by semi-synthesis from cholesterol through formation firstly of 7-dehydrocholesterol by reaction with N-bromosuccinimide followed by dehydrobromination with collidine. Ultraviolet light irradiation affords previtamin Dj which is thermally isomerised to the endo compound shown and thence to the exo... 

Figure 3. Schematic of coordinate system used to determine intensity of ultraviolet light irradiation (55)...

Figure 8. Variation of relative intensity of ultraviolet light irradiation with distance along Y axis as a function of Z (56)...

The substitution products (159)-(161) are formed by ultraviolet light irradiation of (162) in the presence of styrene, o-methylstyrene or 1,1-diphenylethene. The photochemical literature of quinones and arylethenes would suggest that such a reaction might proceed by an electron transfer sequence. However, this is apparently not the case since it only occurs in non-polar solvents and the author calculates that light induced electron transfer from the ethene to the quinone would be endothermic. 

Ultraviolet light irradiation of l-indolyl-2-nitroethenes yields products of oxygen transfer from the nitro group to the indole ring [91] these are thought to be produced via a 6-7t electrocyclic closure, as shown in Scheme 45. 

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