which may be represented by the formula Ar-CH2-Ar,where in the “Ar” groups are usually the same aryl, radicals having the same empirical formulas, although they may be different position isomers and can be even different types of radicals, are cracked inthe practice of t 正在翻译,请等待....
oxygen radicalsThis study demonstrates that low voltage-activated (LVA) Ca2+ channels and at least five pharmacologically distinct high voltage-activated (HVA) Ca2+ channels exist in most rat CNS neurons, with the exception of cerebellar Purkinje cells. These LVA and HVA Ca2+ channels (including ...
However, different types of antioxidants are known to differ in their mechanisms of action; β-carotene (β-Car) is known to be a quencher of singlet oxygen, whereas α-tocopherol (α-Toc) is a quencher of free radicals. Accordingly, the identification of the oxidation mechanism that induces...
Free radicals in thermally treated chloramphenicol were examined by electron paramagnetic resonance (EPR) spectroscopy. The parameters and shape of EPR spectra were analysed and free radical concentrations were obtained in the tested drug samples. Chloramphenicol was thermally sterilised at pharmacopoeia condi...
For example, for particles containing lead or copper, the induction of oxidative damage by free radicals might occur (Gaetke et al., 2014, Nemsadze et al., 2009). Similarly, particles containing radioactive elements, e.g., uranium or thorium, may induce cytotoxicity by radiation (Sturm, ...
species (Egyptian leek, Chinese leek, chives, onion (red and white), bunching onion and shallot) were investigated for their antioxidant properties, including free radical scavenging activities against peroxyl (ORAC) and 2,2-diphenyl-1-picrylhydrazyl radicals (DPPH) and their Fereducing capacity (...
aall the OTPS and BHT exhibited effective scavenging ability on DPPH radicals in a concentration-dependent manner. 正在翻译,请等待...[translate] aThe characters of Beijing Opera are grouped into four types according to sex, age and the social status of different roles. 京剧字符被编组入四个类型...
The gas-phase mechanism of the formation of highly oxidized multifunctional organic compounds (HOMs) from the ozonolysis of β-caryophyllene was investigated in a free-jet flow system at atmospheric pressure and a temperature of 295±2K. Reaction products, mainly highly oxidized RO2 radicals containing...
The fraction of allyl radicals decaying by the slow process is 2 to 10 times greater than the fraction of fast decaying radicals. The ratio of the fast decay rate constant to that of the slow rate constant is greater for the bulk Marlex film than for the hydrogenated PE. All ratios ...
Light-responsive compounds have been used to manipulate biological systems with spatial and temporal control of the event of interest. Illumination of alkylcobalamins with green light (500 鈥 570 nm) produces carbon-centered radicals, wh... AC Mccue,WM Moreau,TA Shell - 《Photochemistry & Photobi...