羧基

Carboxy styrene-butadiene rubber/sodium based clay composites were prepared by emulsion intercalation, the microstructure of the composites was characterized by X-ray diffraction, and the mechanical properties and dynamic mechanical properties of the composites were studied.

用乳液插层法制备了羧基丁苯橡胶／钠基黏土(XSBR/Na-clay)复合材料，用小角X射线衍射仪对其微观结构进行了表征，并对其动态力学性能和力学性能进行了研究。

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 structure of these hydrogels is characterized by pH- and electric field-sensitive moieties, azobenzene cross-linking groups cleavable by cecal bacteria and hydrophobic side-chains which may control the swelling properties of hydrogels by adjusting their lengths.

该凝胶的结构特点是：兼备pH、电场双重敏感的特征基团即羧基；含有可被盲肠菌分解的偶氮苯交联基团；带有可控制凝胶溶胀性能的疏水侧基。

In this research FGA was synthesized through total ten steps such as epoxidation via H2O2, carbonyl protection, LiAlH2 reduction、carbonyl deprotection, epoxidation and ring opening with HF, oxidation, bromination and debromination et al.

设想通过对蕃麻二烯物进行H2O2环氧化、羰基保护、LiAlH4还原、羧基脱保护、溴羟环氧、HF开环、氧化、上溴脱溴等一系列反应得到FGA。

A surface-initiated ring-opening polymerization approach was used to functionalize multiwalled carbon nanotubes with linear poly.

通过化学改性，在碳纳米管表面引入氨基，然后引发N~5-苄氧羰基赖氨酸的N~2-羧基-α-氨基酸酐单体的开环聚合，成功将聚赖氨酸接枝到碳纳米管表面。

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。

Although the peptides had different structures, they typically shared a handful of chemical features, such as phyenyl, hydroxyl, carboxylic acid, and isobutyl groups.

虽然说肽类具有不同的结构，但是他们都共同具有一些简单的化学特征，比如苯酰基，羟基，羧基以及异丁基团。

Furthermore, the one-dimensional complexes 26 and 28 with strongπ-πpacking interactions are prepared from DMF solvent, which indicates that the traditional solvent volatilizing method could bring low-dimensional complex.4. By measuring the enthalpy changes of the liquid phase formation reaction for complexes a~e, and calculating the electronic densities of five 5-substituted derivation of isophthalic acid, we can make a conclusion that 5-substituted group changing of the ligand has a little influence on oxygen atoms of carboxyl groups.5. Fluorescence experiments of these complexes indicated that they could be used for luminescence materials in future.6. Using packing saturation rule we calculated and analyzed these series of complexes, and the results showed that the changes of complexes with changes of ligands could be explained from the rule.

在DMF溶剂中得到了具有强π-π堆积作用力的一维配位聚合物[Ln(5-NO_2-bdc)(NO_3)]Ln=Pr(26和Ho(28)，表明传统的溶剂挥发合成条件可以得到低维的配合物。4、通过配合物a～e的液相生成反应焓的测定，以及配体阳离子的电子密度计算，进一步佐证了间苯二甲酸的5位取代基变化对配体的羧基氧原子配位能力影响不大的结论。5、荧光特性表明此类配合物可以用于发光材料。6、利用堆积饱和规律对所得系列的配合物的进行计算和分析，发现随着配体的变化，配合物的变化可以从堆积饱和规律出发进行解释。

Compounds which possess active hydrogen atoms, include those which contain hydroxyl, carboxyl, mercapto, primary and secondary amino groups, carbonamido, sulphonamido, and reactive methylene or imide groups.

化合物具有活性氢原子，包括那些含有羟基，羧基，巯基，小学和中学氨基，carbonamido，sulphonamido，和活性亚甲基亚胺或团体。

It was found from FTIR analysis of lignin that the absorption intensity of carboxyl group and methoxyl group increased obviously, the absorption peak of phenolic hydroxyl increased slightly.

通过对木素进行红外光谱解释得知，浆料经二氧化氯漂白和氧脱木素后，代表羧基的1701～1718cm〓峰强度显著增强，代表游离酚羟基的3420cm〓峰强度稍有增强，代表甲氧基的1266cm〓处吸收峰减弱。

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。