羧基的

A novel phosphating processing that nickel salt, manganese salt, nitro acenaphthene and carboxyl group polymer were contained in self-made Zn system phosphating, was developed for electrophoretic coating.

在自制的低温锌系磷化液基础上，通过加入镍盐、锰盐和羧基聚合物，并以硝基苊为促进剂，研制出了一种适用于电泳涂装的低锌锰改性常温磷化工艺。

Capric betaine was prepared through ammonolysis of α-chlorododecanoic acid with trimethylamine. The participation effect of the neighboring carboxyl group of α-CDA on dynamics and thermodynamics of the reaction was investigated.

以α-氯代十二酸与三甲胺的氨解反应制备α-癸基甜菜碱，研究了α-CDA在与三甲胺氨解反应中邻位羧基对反应动力学和热力学的影响。

In addition to the amino and carboxyl group s 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

We assume that the special interaction between amino and carboxyl is responsible for the reversible connection between subunits.

我们假定端胺基和端羧基间的非共价键作用连接不同的次级单元。

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

Because the limonene does not have a carbonyl group, the small amount of it which remainsin the carvone fraction will not form a semicarbazone derivative.

由於柠檬烯没有羧基，留在香芹酮馏份中少量的柠檬烯将不会产生缩胺基脲的衍生物。

The as prepared QDs had a narrow, symmetric emission and a broad, continuous excitation spectrum.

并讨论了这种猝灭效应和量子点表面的羧基与碱基之间的氢键作用有关。

The performance and mechanism of corrosion inhibitions of POCA were studied bymethods such as weight-loss, electrochemistry, EDS, XPS and quantum chemistry. It isfound that POCA is cathodic corrosion inhibitor, having synergistic effect with HEDP andZn~(2+). The P and O atoms of phosphono have important electron density contribution toHOMO orbital and the electron gross orbital population is bigger than 1, so it is easy toform absorbing location between phosphono and metal resulting in good corrosioninhibition on mild steel.

通过利用失重法、电化学方法、扫描电镜、X光电子能谱、X-射线能谱和量子化学方法研究膦酰基羧酸的缓蚀性能及其机理，发现POCA是一种阴极型缓蚀剂，与HEDP、Zn~(2+)具有优良的协同增效作用；POCA分子中的膦酰基基团的P原子和O原子对HOMO轨道电荷密度贡献较大，且其轨道电子布居数均大于1，因此比较容易通过膦基与金属形成吸附位而对碳钢具有良好的缓蚀作用；对铜合金具有一定的腐蚀作用，但腐蚀作用比HEDP等有机膦药剂要小得多，同时与BTA具有优良的相容性，添加1mg／L的BTA则可以有效地防止铜合金的腐蚀。

CNTs were first pre-treated using acid solution (HNO3) to obtain CNTs functionalized with carboxylic groups. Subsequently, the stearyl alcohol was grafted onto CNT with the assistance of dehydrating agent, N,N'-dicyclohexyl-carbodiimide. Excellent dispersion in organic solvents such as acetone, THF, and chloroform was found for the modified CNTs (CNT-C18). In addition, the PBS/CNTs nanocomposites were then prepared through simple melt-blending. Mechanical properties, thermal behavior, conductivity of resultant polymer/CNT composites were investigated. The results show that excellent dispersion of nanotubes in the PBS matrices was achieved.

为了增加多壁奈米碳管在复合材料中的分散性，将碳管表面进行化学修饰，首先将多壁奈米碳管浸入HNO3溶液中，进行酸化，使碳管表面带有羧酸的官能基，然后再加入十八烷醇，在温和的条件下，藉由N，N'-二环己基碳二亚胺(N，N'-dicyclohexyl- carbodiimide，DCC)脱水剂脱水，使碳管和十八烷醇之间产生酯基的化学键结，改质后的碳管可以分散在acetone、THF、chloroform…等有机溶剂中，结果显示成功的利用DCC脱水剂完成碳管的改质。

At first,the amino group of amino acid esters interacts with the carboxyl group of the amino acid residue of this porphyrinatozinc to form 1:1 adducts.

氨基酸酯的氨基首先与氨基酸残基的羧基作用形成1：1的加合物，然后与锌卟啉的中央锌原子配位形成1：2的加合物，客体分子与主体分子上的氨基酸残基之间的排斥作用以及主客体之间的色散力作用是主体分子能识别客体分子的另外两种作用。

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。