酸基

Sixteen compounds were separated from 80% ethanol extract of Plant A, they were:-lariciresinol,-isolariciresinol,-isolariciresinol 9-O-β-D-glucopyranoside, tanegoside B, apiginin, apigenin 7-O-β-D-glucoside, apigenin 7-O-β-neospheroside, quercetin 3-O-β-D-glucopyranoside, 1, 7-dihydroxy-3, 4-dimethoxyxanthone, 3-O- [α-L-rhamnopyranosyl (1-4 ] -β-D-glucopyranoside-(25S)-5β-spirostan-3β-ol , 3β-O-D-glucopyranoside quinovic acid, mangiferin , 3'-p-hydroxybenzoyl-mangiferin, physcion, benzenyl methanol β-D-glucopyranoside and Vanillic acid.

结果： 1。从植物A的80％乙醇提取物中共分离得到16个化合物，分别为：-落叶松脂醇、-异落叶松脂醇、异落叶松脂醇9-O-β-D-吡喃葡萄糖苷、tanegoside B、芹菜素、芹菜素7-O-β-葡萄糖苷、芹菜素7-O-β-新橙皮糖苷、槲皮素3-O-β-D-吡喃葡萄糖苷、1，7-二羟基-3，4-二甲氧基-口山酮、菝葜皂苷元-3-O-[α-L-吡喃鼠李糖基（1-4）]-β-D-吡喃葡萄糖苷、喹诺酸3β-O-D-葡萄糖苷、知母宁、3′-对羟基苯甲酸-知母宁、大黄素甲醚、苯甲醇-β-D-吡喃葡萄糖苷、香草酸。

The influence of microwave radiation on Ullmann reaction has been investigated by three Ullmann reactions, including triphenylamine formed by treating the diphenylamine with bromobenzene or Chlorobenzene which substitutes Iodobenzene; 4,4\'-dimethyltriphenylamine formed by treating 4,4\'-dimethyldiphenylamine with bromobenzene which substitutes Iodobenzene; 4,4\',4-trinitrotriphenylamine formed by treating 4-chloronitrobenzene with p-nitroaniline in this paper.

实验表明，在微波辐射条件下，顺式比反式迈克尔反应活性高；若在丁烯二酸的双键上引入甲基后，降低了进行迈克尔加成反应的活性；引入酯基对双键的影响比腈基有利于进行迈克尔反应，丙烯酸甲酯较丙烯腈的迈克尔反应活性高。

The main results are as the following: 1. Different reagents are used to modify the 568nm-emission QDs and there influences on the optical qualities of QDs are discussed. A good method of modification by which the excellent optical qualities of QDs are kept is found. 2. The water-soluble QDs were linked to the antibodies using the coupling reagents ethyl-3- carbodiimide and N-hydroxysuccinimide.

具体包括的内容如下： 1讨论了不同修饰剂及它们的组合对量子点表面进行修饰后，量子点光学性质的影响，发现对于最大激发波长为568 nm的量子点，应用巯基十一酸与巯基乙酸钠组合对其修饰后，得到的水溶性量子点保持了脂溶性量子点的优良光学性质，其量子点产率相对于其他修饰剂或组合也比较高。

The results of the analysis of the pectin extracted show ed that the degree of free and Salted forms, the degree of amide substitution,and the degree of esterification of carboxy groups were 85.1%, 1.1%, and 13.8%,...

我们对蚕粪果胶的分析表明，其羧基的游离及成盐程度、酰胺化程度、酯化程度分别为85.1％、1.1％和13.8％，甲氧基含量、半乳糖醛酸含量分别为1.79％和81.5％；特性粘度为267。

Thiazolidiane-4-carboxylic acid was prepared and used as the aid catalyst that has strengthened the catalytic effect of chloroplatinic acid, greatly improved the yield of the hydrosilylation of methyldichlorosilane with allychloride, and made the yield get to 64.9%.

通过比较，选用自制的含硫化合物4-羧基-1，3-噻唑烷作助催化剂，大大增强了氯铂酸的催化活性，使甲基二氯硅烷与氯丙烯的加成反应以较高产率得到γ-氯丙基甲基二氯硅烷，产率可达64.9%。

The CL method is useful for the detection of compounds that have no chromophoric groups. Inhibition of CL emission allows the determined of most amino acids at 0.1-1 mM.

使用化学发光的方法对於没有发色团官能基的化合物特别有用，对於大部分胺基酸可测定的浓度值可达0.1~1 mM。

By the analysis of HPLC,the amount of ganoderic acids in the fermentation broth was more abundant when cultured in Coix lachryma-jobi substrate than cultured in synthenic liquor substrate.

分析了主要活性物质在灵芝发酵前后的变化，结果表明：以薏苡仁为基质进行灵芝发酵后的发酵产物，其粗脂肪的总量有所下降，但亚油酸的含量升高；经 HPLC 分析，与以清液进行的灵芝发酵相比，以薏苡仁为基质进行的灵芝发酵在粗灵芝酸组成上是有差异的，合成的种类也更为丰富。

The interaction between the polycation and polyanion was studied by spectrophotometry and conductometric titration.

目前研究得较多的体系是聚苯乙烯衍生物，如Ioplex 1 0 1即由聚苯乙烯磺酸钠和聚氯化乙烯基苄基三甲基铵反应而得[2 ，3] 。。。。。

AIM: To investigate the effects of crocetin on receptor for advanced glycation end products mRNA expression in bovine endothelial cells induced by advanced glycation end products and the possible mechanisms involved.

目的：研究西红花酸对晚期糖基化终产物诱导牛内皮细胞中晚期糖基化终产物受体mRNA表达的抑制作用，并探讨其可能机制。

They suggested that radicals with a double bond 13 to the carbon bearing the peroxy groups (which can only arise from acids containing more than two double bonds) cyclize to form peroxides with five-membered rings.

他们认为连接过氧基的碳原子有一个双键的游离基(只有多于两个双键的酸可形成)环化形成五元环的过氧化物。

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。