酰氧基

Their structures were confirmed by elemental analysis, 1H NMR, and IR spectral data. The preliminary bioassay results showed that α-phenyl-sul-fonylcyclododecanone oxime 2,4-dichlorophenoxy acetate (8p) had inhibition ratio 100% and 80.07% against Digitaria sanguinalis Scop., and 100% and 88.70% against Abutilon theophrasti Medic. at concentrations of 100 and 1 mg/L.

初步生物活性测定结果显示，部分化合物具有一定的除草活性，如α-苯磺酰基环十二酮肟-2，4-二氯苯氧乙酸酯(8p)在浓度为100和1 mg/L时对马唐的抑制率分别为100%和80.07%；对苘麻的抑制率分别为100%和88.70%。

N,N,N',N'-tetrabutyl-3-oxa-pentanediamide presents excellent extraction abilities for actinides elements. The effects of hydrolysis and radiation on extraction behavior of U with TBOPDA have been investigated.

N，N，N'，N'四丁基 3 氧戊二酰胺对锕系元素具有良好的萃取性能，为了考察TBOPDA稳定性，研究了温度、酸度和吸收剂量对TBOPDA萃取性能的影响。

Nicotinamide adenine dinucleotide phosphate oxidase is a major source of reactive oxygen species production in many nonphagocytic cells.

还原型烟酰胺腺嘌呤二核苷酸磷酸氧化酶是许多非吞噬细胞中反应性氧自由基产生的主要来源。

It is concluded that carboxylate oxygen and chromium were bonding with coordinated bond.

发现酰胺Ⅰ带的吸收峰发生位移，从1657.78cm移动至1646.02cm，且峰形发生变化。结论蛋白质肽链上的羰基氧与铬形成配位键。

Result The three strains all produced the AHL signal molecules; the strains FML05-land FML05-2 produced two types of AHLs at least and the N-3-oxo-octanoyl-homoserine lactone was the predominant signal molecules. The production of siderophore and proteinase in FML05-2 were reduced by co-incubation with AHL degrader strain.

结果］3株菌均产生AHLs信号分子；菌株FML05-1、FML05-2至少产生两种AHLs分子，二者所产生的主要信号分子是N-3-氧代－辛酰基－高丝氨酸内酯(N-3-oxo-C8-HSL)；FML05-2与降解AHLs的菌株共同培养，发现嗜铁素的产量与蛋白酶活性明显下降。

The cleaning agent non-toxic to humans,non-toxic to environment,non-ozone depleting,can be discharged to drain with minimal waste teatment required and does not contain phosphates or nonyl phenolethoxylates.

其清洗剂主要组分包括脂肪醇聚氧乙烯醚、烷基醇酰胺等多种表面活性剂和助剂，符合对人无毒、对环境无毒、对臭氧层无损耗、不含磷酸盐及壬基苯酚乙基盐等综合要求。

First of all, a systematic study on adsorption properties of the four phenolic compounds (phenol, p-chlorophenol, p-cresol and p-nitrophenol) on MX-4, AM-1 and NJ-8 was carried out, and a comparison of the adsorption behavior between the new resins and Amberlite XAD-4 was also made. In addition, the impact of the resin structure and the property of a specific compound on adsorption behavior was discussed herein.

用静态吸附法系统地研究了四种酚（苯酚、对氯苯酚、对甲苯酚、对硝基苯酚）在乙酰基修饰交联聚苯乙烯树脂(MX-4)、酚羟基修饰超高交联聚苯乙烯树脂(AM-1)以及氧修饰超高交联聚苯乙烯树脂(NJ-8)上的吸附行为并与AmberliteXAD-4树脂的吸附行为进行比较，探讨了树脂结构和化合物性质对吸附行为的影响。

Thus if we control the reaction temperature at somesolvent we can obtain the products either by the reaction of phosphoryl-stabilizedcarbonanion with N-tosyl imines or by the reaction of methoxycarbonyl-stabilizedcarbanion with N-tosyl imines.

在一定溶剂中，如果控制反应的温度可以控制得到由膦酰基稳定的碳负离子和亚胺反应或由甲氧羰基稳定的碳负离子和亚胺反应。

According to the results of the examination, the stronger the electron-withdrawing protective group of imines, the better the cis-selectivity of the reaction, 68% yield, trans:cis is 99:1 diastereoselectivity could be leaded by Ts-imines (4-methyl-N-methylene-benzenesulfonaides) with a substituent [2,4-(CH3O)2C6H3], Substrate scope investigation revealed that a wide variety of ketenes and imines could react smoothly to afford corresponding,β-lactams.

实验结果表明，亚胺的保护基团吸电子能力越强，越有利于顺式产物的生成。对甲苯磺酰基保护的取代基为2，4-二甲氧苯基的亚胺参与的该反应可得到68%的产率，反式：顺式=99：1的非对映选择性。底物拓展过程中发现Staudinger反应适用于多种不同的亚胺与烯酮。

The structures were identified by IR, UV,〓 NMR and element analyses. 2. Free radical 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl as catalyst, the phase transfer catalyzed method of oxidation eighteen semicarbazides to N-Aryl-2-Phenyl diazenecarboxamide with a solution of potassium ferricyanide in 2N aqueous sodium hydroxide and dichloromethane is described for the first time.

利用2，2，6，6-四甲基-4-羟基-1-哌啶氮氧自由基为相转移催化剂，在饱和铁氰化钾的2N氢氧化钠溶液与二氯甲烷的两相反应液中，催化氧化十八个取代氨基脲得到十八个相应的新型偶氮化合物N，2-二芳基二氮亚烯甲酰胺，均获得了较高的产率。

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。