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- Methods: The electron spin resonance(ESR)was used to observe the scavenging effect on the superoxide anion radical(O2. 方法:采用电子自旋共振技术(ESR)分别检测大黄中主要成分对O2.;-的清除作用。结果:大黄中主要成分对O2
- IC50 of grape polyphenols on scavenging DPPH radical, superoxide anion radical and hydroxyl radical were 1. 本文对葡萄多酚抗氧化活性进行研究。
- Activated olefinic bond Amine, thiol, radical initiator, cationic initiator, dienes (Diels-alder reactive). 活性烯键胺,巯基,引发剂,阳离子引发剂,烯烃(的Diels - Alder反应)。
- In the superoxide anion radical scavenging assay, only compound 6 showed relatively high effect with IC50 value of 0.88mM. 在清除超氧阴离子自由基的反应中,只有化合物6具有较高的自由基清除率,其IC50值为0.;88mM。
- And new compound 3 scavenged hydroxyl radical and super anion radical as IC50 values of 1.11mM, 1.84mM, which were lower than those of EGCG. 而新化合物3对羟自由基和超氧阴离子的清除作用的IC50值分别为1.;11mM和1
- MethodsUsing the pyrogallicacid autooxidation to determine the activity of three Cordyceps sp. on scavenging superoxide anion radical(O 2-). 方法采用邻苯三酚自氧化法测定3种虫草的抗氧化活性。
- The melt grafting of glycidyl methacrylate(GMA) onto ethylene propylene diene monomer(EPDM) using dicumyl peroxide(DCP) as an radical initiator was carried out. 以甲基丙烯酸缩水甘油酯为接枝单体、过氧化二异丙苯为引发剂对三元乙丙橡胶(EPDM)进行熔融接枝。
- The results of colorimetric assays showed that these compounds effectively scavenged hydroxyl radical and super anion radical. 化学比色法的结果显示这些化合物对羟自由基和超氧阴离子自由基有较好的清除作用。
- The melt grafting of glycidyl methacrylate (GMA) onto ethylene propylene diene monomer (EPDM) using dicumyl peroxide (DCP) as an radical initiator was carried out. 摘要以甲基丙烯酸缩水甘油酯为接枝单体、过氧化二异丙苯为引发剂对三元乙丙橡胶(EPDM)进行熔融接枝。
- Dried plums contain high amounts of neochlorogenic and chlorogenic acids, antioxidants that are particularly effective in combating the “superoxide anion radical”. 李子干含有的大量新绿原酸和绿原酸,是对付“过氧化阴离子自由基”特别有效的抗氧化剂。
- Today, he is still bubbling with new ideas and radical initiatives. 今天,他依然能够冒出新的想法和激进的倡议。
- The solid phase grafting reaction between polypropylene (PP) and glycidyl methacrylate (GMA) in the presence of styrene (St) as the comonomer and benzoly peroxide (BPO) as a radical initiator was investigated. 以苯乙烯(St)为共单体,过氧化苯甲酰(BPO)为引发剂,采用固相接枝反应将甲基丙烯酸缩水甘油酯(GMA)接枝到聚丙烯(PP)大分子链上。
- The sizing materials used on water-jet loom were prepared by emulsion polymerization with 2% AA,3% MAA,15% MMA and 30% BA,in the presence of 1.0% emulsifier and 0.5% radical initiator. 用2%25的丙烯酸(AA);3%25的甲基丙烯酸(MAA);15%25的甲基丙烯酸甲酯(MMA);30%25的丙烯酸丁酯(BA);加入1.;0%25的乳化剂和0
- It suggests that quercetin might decrease the active oxygen generation of leukocyte,reduce the superoxide anion radical formation by inhibiting the xanthine oxidase and / or scavenge the active oxygen directly in the same time in both systems. 提示槲皮素既可抑制白细胞吞噬产生的活性氧,又可减少黄嘌呤-黄嘌呤氧化酶系的O-2形成,或兼有直接清除活性氧的作用
- When the concentration of both herbs are 8. 33mg/ml (dry herbs), the percentages of elimination of superoxide anion radical O2- are 98. 5% and 100% respectively. The effects are very obvious. 当反应系统中药物浓度(以生药计)达8.;33mg/ml时;二者对O_2~-的清除率分别达98
- When the target organic was formic acid (a promoter of radical reaction in ozonation), a radical initiation reaction could obviously enhance the ozoantion efficiency. 当目标有机物是对链反应具有促进作用的甲酸时,自由基引发反应可以明显提高甲酸的臭氧化效率。
- Scavenging activities of seven natural flavonoids from elsholtzia bodinieri vaniot and artemisia ordosica kraschen for superoxide anion radicals was studied by single-sweep oscillopolarography. 摘要用单扫描示波极谱法研究了从东紫苏和黑沙蒿中分离出的七种黄酮类化合物对超氧阴离子自由基的清除作用。
- Keywords PS Flame Retardant Free Radical Initiator Carburant; 聚苯乙烯;阻燃剂;自由基引发剂;成炭剂;
- Keywords Sinomenine;superoxide anion radical;polarography; 青藤碱;超氧自由基;极谱法;
- Acryloyloxystarch was prepared and used as the parent for free radical initiated graft copolymerization with the end functionalized hydroxyethyl methacrylate macromonomer of poly (D, L lactide). 合成了丙烯酰氧基淀粉和以甲基丙烯酸羟乙酯为功能端基的聚乳酸大单体。