نتایج جستجو برای: carbonyls
تعداد نتایج: 1497 فیلتر نتایج به سال:
The photosensitivity of metal carbonyls has been known almost as long as the class of coordination compounds itself. Among no other group of inorganic compounds may one find so many light-sensitive materials. Hence photochemical reactions of metal carbonyls have found wide applications for synthetic purposes. However, whereas much research has been done to understand the thermal reactions," the...
Stir bar sorptive extraction is a powerful technique for the extraction and analysis of organic compounds in aqueous matrices. Carbonyl compounds are ubiquitous components in rainwater, however, it is a major challenge to accurately identify and sensitively quantify carbonyls from rainwater due to the complex matrix. A stir bar sorptive extraction technique was developed to efficiently extract ...
Degradation of lipid peroxides leads to the formation of cytotoxic 2-alkenals and oxenes (collectively designated reactive carbonyls). The novel NADPH-dependent oxidoreductase 2-alkenal reductase (AER; EC 1.3.1.74) from Arabidopsis (Arabidopsis thaliana), which is encoded by the gene At5g16970, catalyzes the reduction of the alpha,beta-unsaturated bond of reactive carbonyls, and hence is presum...
Some oxidative stress effects, such as lipid peroxidation or the DNA damage, have been extensively assessed and reliable biomarkers have been associated to characterize the degree of the damage, while the attack of reactive oxygen species on proteins and the formation of protein carbonyls were investigated only in the recent years. Taking into account that protein carbonyls may play an importan...
Key words palladium catalysis - silyl enol ethers α,β-unsaturated carbonyls
Direct evidence of adsorption induced Cr(II) mobility on the SiO(2) surface upon complexation by CO.
In situ, temperature dependent, XAFS proved that Cr(II) grafted on SiO(2) is extracted from the surface upon CO adsorption at 100 K: DeltaR(Cr-O) = +0.08 A. CO adsorption evolves into two coverage dependent steps: (i) displacement of weak siloxane ligands (non-classical carbonyls); (ii) relaxation of R(Cr-O) surface bond, R(Cr-CO) optimization and transformation into classical carbonyls.
Gas/particle partitioning of carbonyls in the photooxidation of isoprene and 1,3,5-trimethylbenzene R. M. Healy, J. C. Wenger, A. Metzger, J. Duplissy, M. Kalberer, and J. Dommen Department of Chemistry and Environmental Research Institute, University College Cork, Cork, Ireland Laboratory of Atmospheric Chemistry, Paul Scherrer Institut, Villigen, Switzerland Department of Chemistry and Applie...
Purpose Glaucoma-related molecular biomarkers can improve clinical testing to diagnose the disease early, predict its prognosis, and monitor treatment responses. Based on the evidence of increased oxidative stress in glaucomatous tissues, this study analyzed oxidative stress-related biomarker candidates in blood and aqueous humor samples with or without glaucoma. Methods The blood and aqueous...
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