8.7.2 Free Radicals Free radicals are molecules that contain one or more unpaired electrons (odd number of electrons) in their outer orbit. Radicals are formed by accepting or losing an electron. They may be positively charged (cation radical), negatively charged (anion radical), or neutral (...
Muonium has been used as an H atom analogue to investigate the free radicals formed by H addition to the fused polyaromatic hydrocarbon triphenylene. Although there are three inequivalent sites of attack in this molecule, only two radicals were detected. Muon and proton hyperfine constants were ...
求翻译:Free radicals, formed by various environmental chemicals as well as endogenous metabolism, cause oxidative damage to DNA, lipids and proteins, resulting in failure of cellular functions through which a number of conditions such as tumors, inflammation, shock, atherosclerosis,diabetes, and ischemi...
Free Radicals Formed by Hydrogen Atom Bombardment of the Nucleic-Acid Bases HW Gordy - 《Proceedings of the National Academy of Sciences of the United States of America》 被引量: 0发表: 1965年 Photodynamic and radiolytic inactivation of ion channels formed by gramicidin A: oxidation and ...
et al. Free Radicals Are Formed in the Brain of Fetal Sheep during Reperfusion after Cerebral Ischemia. Pediatr Res 43, 271–275 (1998). https://doi.org/10.1203/00006450-199802000-00019 Download citation Received14 September 1995 Accepted29 June 1997 Issue Date01 February 1998 DOIhttps://doi....
The more mobile component is assigned to allyl radicals along the EPDM chains, whereas the immobilised allyl radicals are formed in the cross-links. The stability of the allyl radicals decreases in the order DCPD > ENB > VNB. EPDMs containing two dienes show more persistent radicals than ...
D. E. HOLMES, R. B. INGALLs, and L. S. MYERS, An ESR study of free radicals formed by reaction of nucleotides and their constitutents with hydrogen atoms. Intern. J. Radi- ation Biol. 12, 415-426 (1967).Holmes DE, Ingalls RB, Myers LS., Jr An E.S.R. study of free ...
The amounts and composition of metal sulfides formed during soil flooding vary with soils, and the oxidative dissolution of CdS is affected by both the free radical and voltaic effects offered by different metal sulfides. These effects are also applicable to the biogeochemistry of other chalcophile ...
This review briefly discusses how free radicals are formed and the possible participation of free radicals in disease. The review describes the basic radical reactions and the types of products that are formed from the freeradical reactions of cellular constituents. In many cases, in vivo free...
ESR experiments have shown that free radicals are formed in wheat plant roots as a result of exposure to O2. Although the radical(s) has not been positively identified, the nature of the spectra allows simple oxygen-derived radicals, such as O2, HO2 and OH, to be excluded as possibilites...