酸基

Usually the MWNT Was ultrasonic in different acids for 3 to 5 hours, and theproper oxidized carboxyl MWNT can be obtained.

一般超声3～5 h，采用不同强度的酸可以获得不同氧化程度的羧基化MWNT。

According to the properties of the MWNT used in this study, the relationbetween the degree of carboxyl and oxidation time or acids strength was systematicallystudied.

针对实验中使用的MWNT，系统的研究了酸强度和氧化时间对于MWNT的羧基化程度的影响。

Different kinds of metallic carboxylate were in situ prepared in EPDM matrix.

本文首次在EPDM基体中原位合成了各类羧酸盐进行补强研究。

A clear liquid carboxylic acid used in perfumes and drugs.

一种清亮的液体羧基酸，用于香水和药物中。

An unsaturated liquid carboxylic acid used in the manufacture of ''.

一种不饱和液态羧基酸，用于制造''。

The results showed that the carpophore of the four new strains contained eight essential amino acids , side chain amino acid and arginine which were essential to the human body . However , the content of aromatic amino acid was relatively low .

测定了4个杏鲍菇新品种子实体的氨基酸含量，结果表明，4个新品种的子实体中含有丰富的8种人体必需氨基酸，支链氨基酸和带有胍基的精氨酸，而芳香族氨基酸的含量却很低。

Enough functional cells in supporting materials is the foundation in the formation of bone and cartilaginous tissue in vivo.

目的：对经体外培养的骨髓基质干细胞与藻酸钙载体及生长因子复合形成的组织工程性骨及软骨进行形态学观察。

OBJECTIVE: To determine the role of Asp98 in the catalysis of Cathepsin E.

目的：检验第98位天门冬氨酸残基的重要性。

This dissertation divides into seven chapters and the main contents and conclusions are listed as following:1. Three series binuclear lanthanide carboxylate coordination polymers 1～7 have been synthesized under hydrothermal conditions by altering the length of carbon chains between carboxyl group and phenyl ring on ligands, which are isophthalic acid, 1,3-phenylenediacetic acid and 1,3-phenoxydiacetic acid, and lanthanide ions such as Pr~(3+), Eu~(3+)and Ho~(3+).

论文共分七章，主要研究内容和结论如下：1、通过改变间苯二甲酸配体的羧基和苯环之间的碳链长度，从间苯二甲酸、间苯二乙酸到间苯二氧乙酸，以及改变稀土离子半径Pr~(3+、Eu~(3+)和Ho~(3+)出发，在水热条件下制备了三个系列双核金属单元的稀土羧酸二维配位聚合物1～7。

Methods: Fresh saphena rings were sudied in organ chamber after incubating with Krebs-Henseleit bicarbonate solutions, FWM, KH with 0.1mmol/L NCR, FWM with 0.1mmol/L NCR at 37℃ for 1 hour. Precontraction induced by prostaglandin F2 (U4661930nmol/L) and endothelium-dependent relaxation induced by calcium ionophore A23187 l0^(-10~l0^(-6) mol/L were measured in the presence of indomethacin (7μmol/L) and LNNA (300μmol/L). Result: No significant changes were found in the 4 groups under the light microscope.

采用器官槽法研究在37℃有氧条件下用重碳酸盐缓冲液、含0.1mmol/L NCR的KH液、FWM液、含0.1mmol/L NCR的FWM液中浸泡血管环1h后，再用7μmol/L吲哚美辛和300 μmol/L N-硝基－L-精氨酸作用后，检测30 nmol/L U46619及不同浓度A23187引发的血管收缩舒张反应。

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。