查询词典 acid radical

DBP and DEHP have the similar photodegradation mechanism. The predominant pathway for DBP and DEHP photodegradation in the Fe -oxalate complexes system is hydroxyl radical extracting H atom in α-position of the aliphatic chain close to the carboxyl group followed by oxidation to produce alcoholized derivatives ROH. ROH then breaks down to phthalic acid and dialcohol that will be further oxidized up to mineralization.

DBP和DEHP的光降解历程相似，主要反应途径是OH自由基提取烷基上与羧基相连的α-H原子，然后被氧化生成醇衍生物，再分解成为酞酸和二醇，酞酸经历开环和进一步脱羧，二醇可以被氧化成为低级烷基羧酸，直至矿化。

Reaction mechenism between heteropoly acid and organic matter is generation of electron-hole pair and producing of three radical such as.

杂多酸与有机物反应的机理主要是电子-空穴对的产生和。

A quantitative appraisal of the prospect of uranium mineralization is completed based on a set of hydrochemical data acquired from the known in-situ leachable sandstone-type uranium, including radon content, acid-alkali ratio, oxidized and reduced electronic potential, hydrocarbonate radical and uranium content in water.

但是在找铀过程中仅用水化学成份、氡含量、酸碱度和氧化还原电位等数值进行描述，说明它们与铀矿化的关系，这种单一因素的描述不能综合反映与铀矿化的联系程度，以定量评价铀矿化与上述因素的关系，从而影响了水化学找矿的效果。

The free radical scavenging effects of Meretrix meretrix hydrolysates prepared with papain,neutral protease and acid protease were investigated.

利用正交实验研究了文蛤蛋白分别经木瓜蛋白酶、中性蛋白酶、酸性蛋白酶作用后酶解物对羟自由基和超氧自由基的清除作用，优化了水解条件，并对最佳清除率下的三种酶解物进行SephadexG50凝胶柱分离，测定酶解物中抗氧化活性肽的分子量分布。

Studies illustrated that though it could be decomposed under UV light by itself for about 5%, the decolouration of acid red 3B was due to the degradation of K4Nb6O17, but not to the adsorption on it. And the strong oxidic free radicals attracted the conjugated radical first.

研究表明，酸性红3B的去除主要是K_4Nb_6O_(17)对其的光催化降解，而并非吸附作用，但酸性红3B自身也存在少量的光降解，约为5％，且强氧化基团首先进攻的是共轭基团。

And the ability of antioxidant of polyhydroxy benzamides don't have too many differences with Trolox (IC50 =13.90 μg/ml), the substition of hydroxy group at amino benzene ring doesn't affect the whole ability of antioxidant apparently, but while the single hydroxy group at carboxylic acid benzene ring, they are apparently decrease to scavenge the ability of free radical, as a result, the hydroxy at amino benzene ring substitutes its function, without the hydroxy group, the ability of antioxidant is worst, but it upgrades its function while the hydroxy and amino are in the ortho-position or para-position.

而当多酚醯胺化合物其抗氧化能力与Trolox差不多时(IC50 =13.90 μg/ml)，胺基苯环上之羟基取代对整体抗氧化能力影响不明显，但在羧酸苯环上具单羟基时，其清除自由基能力明显下降，使得胺基苯环上羟基取代发挥了影响力，无羟基取代时，抗氧化能力最差，而羟基与胺基互为邻位或是对位时较间位有提升效果。

Content : The definition and classification of functional food;The development and management of functional food;The functional compositions of food eg., polysaccharose、functional sweetner、functional lipid、free radical scavenger、probiosis、conditional essential amino acid、active peptide and protein etc.;The evaluation of functional food.

课程内容：功能食品的定义和分类；功能食品的发展和管理状况；食品的功效成分如：多糖、功能性甜味剂、功能性油脂、自由基清除剂、益生菌、条件性必需氨基酸、活性肽和蛋白质等；功能食品的功效评价。

The amphiphilic copolymer poly (MAA-SMA-PEGMA) was synthesized by the conventional free-radical copolymerization of methacrylic acid, stearyl acryate and poly methacrylate monomers.

利用功能性单体甲基丙烯酸、甲基丙烯酸十八烷基酯和聚乙二醇甲基丙烯酸酯通过常规自由基无规共聚反应，合成了两亲性共聚物Poly(MAA-SMA-PEGMA)。

The results indicated that the DNA damage could be accelerated by Fenton reaction in the presence of ascorbic acid but was inhibited slightly by hydroxyl free radical scavenger such as mannitol or dimethyl sulphoxide under the experimental conditions.

试验结果显示，抗坏血酸存在时可以加速Fenton反应对DNA的损伤，而在同样条件下，自由基捕获剂甘露醇或二甲基亚砜对由Fenton反应造成的DNA损伤的抑制作用却不是很大。

Graft copolymerization of acrylic acid and acrylic amide onto chlorinated polyethylene by the oil-swellable suspension graft copolymerization technique was studied, benzoyl peroxide was used as the free radical initiator and ethyl acetate as the sweller.

采用溶胀悬浮接枝共聚法，将水溶性单体丙烯酸、丙烯酰胺接枝到疏水性氯化聚乙烯大分子链上，合成双亲性接枝共聚物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。