منابع مشابه
Flavonoids as reductants of ferryl hemoglobin.
The ferryl derivatives of hemoglobin are products of the reactions of oxy- and methemoglobin with hydrogen peroxide. Ferryl hemoglobins, either with or without a radical site on the protein moiety, are oxidizing species. Plant polyphenols, flavonoids, have been shown to act as antioxidants in vivo and in vitro. Reactions of met- and oxyhemoglobin with hydrogen peroxide in the presence of catech...
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The prospect of enhanced device performance from III–V materials has been recognized for at least 50 years, and yet, relative to the phenomenal size of the Si-based IC industry, these materials fulfilled only specific niches and were often referred to as ‘‘the material of the future’’ [1]. A key restriction enabling widespread use of III–V materials is the lack of a high quality, natural insula...
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Abstract Selected developments in the chemistry of heteroaromatic N-oxides since 2001 are presented in this review. The use of these Noxides, both in late-transition-metal-catalyzed oxidations of carbon– carbon triple bonds and in regioselective C–H functionalizations of the heteroarene, are contemporary topics of interest and the focus of the discussion.
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[1] We examine the sources and chemistry affecting nitrogen oxides (NOx=NO+NO2) over the tropical Pacific (30 S–20 N) using observations from the Pacific ExploratoryMission to the Tropics B (PEM-Tropics B) aircraft mission conducted in March–April 1999. A global model of tropospheric chemistry driven by assimilated meteorological data is used to interpret the observations. Median concentrations...
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Session I" Overview of the Chemistry and Biochemistry of Nitrogen Oxides Prof. L. Ignarro, UCLA: The Biology of Nitric Oxide Prof. J. Enemark, Arizona: Transition Metal Complexes of Nitrogen Oxides Prof. W. Koppenol, ETH Zurich: Fundamental Chemistry of Nitrogen Oxides Prof. S. Bohle, Wyoming: Synthesis and Characterization of Higher Nitrogen Oxides Prof. J. Lipscomb, Minnesota: Nitric Oxide as...
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ژورنال
عنوان ژورنال: Science
سال: 2005
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.309.5741.1653b