羧基的

Any of various natural or synthetic compounds containing two or more amino acids linked by the carboxyl group of one amino acid and the amino group of another.

肽一种自然或人工的合成物，包括二个或二个以上氨基酸，通过一个氨基酸的酸基和另一个的羧基结合而成

The research results indicated that the first cross-linking between the HPAM and Cr3+ in ground condition was propitious to reduce leaking of blocking agent in oil layer, and the second crosslink action between acylamino of HPAM and organic phenolic aldehyde can form the high intensity gel and it can endure high temperature.

研究结果表明，HPAM羧基与Cr~(3+)离子在地面条件下的一次交联作用有利于减少堵剂在油层的漏失量，HPAM酰胺基与有机酚醛在地层条件下的二次交联作用，能够形成耐温高强度凝胶。

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%。

And humic substance (fulvic acids, humic acids and humin). The features of fulvic acids of humic substance at the southwestern part of Turfan-Hami basin are: the content of C is low, and the content of H, S, O is relatively high, atomic number of C/H is low.

研究证实吐哈盆地腐殖质中黄腐酸的特点是C含量较低，H、S、O含量偏高，C/H原子数比较低；官能团分析证实黄腐酸的总酸基、羧基、酚羟基含量较高，反映出黄腐酸具有较高的活性。

Influence of the chemicals on the composition of pyrolysis products of Tilia amurensis lignin was discussed. During the pyrolysis process, a great deal of CO2, CO and H2O was produced, which was mainly attributed to the elimination of carbonyl, carboxyl, hydroxyl, methyl and the further reaction to form polycyclic aromatic hydrocarbons.

结果表明：木质素在裂解过程中，产生大量的CO2、CO、H2O，其主要原因是高温时羰基、羧基、羟基、甲基等脱除反应以及环芳香族化反应深入进行，而所选用的阻燃剂大多数促进了CO2、CO、H2O的产生。

The results were shown as following:(1)Compared with unsubstituted Pc, the introduction of carboxyphenoxy improves the solubility of four Pc derivates, and can be attributed to amphiphilic phthalocyanine. This property is most important for photosensitizer to transmit in vivo and enrich on the surface of tumors.

研究结果表明：(1)合成的四种酞菁与其它酞菁类衍生物相比，由于用羧基苯氧基对酞菁周边环进行了修饰，其溶解性能得到明显地改善，属于两亲性酞菁化合物，这种溶解特性适合其作为光敏剂在体内的传输和在肿瘤组织中的富集。

In this thesis, a series of uliphatic polyester anhydrides 〓COCH〓CH〓COO 〓OCOCH〓CH〓COO〓 and copolyanhydrides with 1, 3-bis (4-carboxylphenyloxy) propane were prepared.

本文中合成了一系列脂肪族聚酯酸酐〓以及与1，3-双（4-羧基苯氧基）丙烷的共聚物，研究了它们的降解性能和药物释放性能。

In addition to the amino and carboxyl groups possessed by all amino acids, the R group of some amino acids can ionize.

另外，所有的氨基酸都拥有氨基和羧基，一些氨基酸的R基能电离二元酸能形成酸式盐。

It is noteworthy that there are a lot of hydrogen bond interactions between carboxy groups and water molecules and weak C-H…S hydrogen bonds between the 1,3-dithiocyclohexyls of two adjacent DYM ligans.

另外，在此配位聚合物中，羧基氧、配位水分子氧和晶格水分子氧之间存在大量氢键相互作用，而且，相邻 DYM 配体的 1，3-二硫环已基之间存在弱的 C-H…S 氢键相互作用。

The structures of PAM and its hydrolysate were characterizated with FTIR and ~(1)H NMR.

研究了二醛交联的聚丙烯酰胺及其水解产物对水、肥的吸收及保持能力，结果表明，聚丙烯酰胺水解交联后，部分胺基转化为羧基和羟基。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。