共价键

蛋白质分子间共价键（SS）力增大；

Increase of covalent bond ( S S ) among proteins ;

钢中部分硫化物共价键能与其析出行为的关系

Relationship between the covalent bond energy of sulfides and their precipitation behavior in steel

最简单的共价键分子由两个氢原子组成。

The simplest covalently bonded molecule is formed from two hydrogen atoms .

一种玻璃载片共价键固定DNA的新方法

A novel method for covalent attachment of synthetic DNA to glass support

共价键合修饰壳聚糖pH传感器的研制

Study on preparation and characteristics of pH sensor modified by chitosan

菁染料共价键合在单晶硅表面的X－光电子能谱

X-photoelectron spectra of cyanine dyes with covalent binding to monocrystalline silicon surface

DNA中糖苷键碱基侧二共价键的喇曼特性分析

On the Raman Characteristics of Covalent Bonds Flanked to the Glycoside Bond in DNA Purine Base

以二环己基碳化二亚胺为活化剂将葡萄糖氧化酶（GOD）共价键接在玻碳电极上。

Glucose oxidase ( GOD ) was attached to glassy carbon electrodes by covalent binding with dicyclohexylcarbodiimide as an activator .

本文采用扩展的准一维紧束缚模型讨论了两种DNA分子及其通过共价键键合后的几何结构及电子结构特性。

In this work , two kinds of DNA coupling electronic characteristic , within the extended one-dimensional tight-binding model were studied .

研究结果表明：两者结构中Al的键级和Al&O键共价键级大致相同。

The results show : their bond order of Al and covalent bond order of Al-O bond are alike ;

结果表明Mg原子与配位水分子之间的配位键具有共价键性质。

The results show that the bonds between the coordinate waters and the Mg atom have certain extent covalent character .

价键（VB）理论在经典的共价键理论基础上产生。

Valence-bond theory was formed on the basis of the classical ideas of valence bond .

液态Al&Si合金中的共价键及Sr的影响

The covalent bond in liquid Al-Si alloy and effect of Sr on the bond

用聚乙烯醇（PVA）缩醛化方法，共价键结合肝素。

Acetalized poly ( vinyl alcohol )( PVA ) graftes heparin by covalent bond .

Schiff碱稀土配合物以共价键连接方式组装到介孔块体材料的研究

Study on Schiff Base Lanthanide Complexes Covalently Bonded to Meso-structured Silica

医用TiO2/SiO2薄膜表面共价键合肝素研究

Covalent immobilization of heparin onto tio_2 / sio_2 films for biomedical applications

第二步，通过肝素分子所带功能基团（如羟基等）与PVC材料接枝表面上的环氧基之间的反应将肝素共价键合到PVC材料表面。

Secondly , heparin is attached to the grafted surface through its functional groups reacted with the epoxy groups .

结果表明La（Ⅲ）-L配合物与小牛胸腺DNA作用既有共价键合，又有插入作用。

The results indicate that the lanthanum (ⅲ) complex possibly interacts with calf - thymus DNA by both intercalative and covalent binding .

例如溶解温度或pH值相对很小的变化可能导致变性，这种特性通常不破坏共价键。

Relatively small changes in solution temperature or pH , for example , may cause denaturation , which usually occurs without severing covalent bonds .

并列而排的转移RNA阅读邻近的密码子，带来氨基酸并将其以共价键连接起来。

Juxtaposed tRNAs , reading adjacent codes , bring together amino acids , which are then covalently joined to together .

它是由具有亲电基团的化合物或体内具有亲电基团的代谢产物与DNA共价键合所形成的化合物，是DNA化学损伤最重要和最普遍的形式。

It is the product of DNA covalently binding with the electrophilic group of compound , and is the most important and commonly mode of DNA damage .

ICP-AES测试结果提示醇铁分子的铁原子是以共价键的形式与聚合物链相键合的。

ICP-AES measurements revealed that the iron atoms were chemically bound to the polymer chains .

X射线光电子能谱（XPS）测试进一步证实了自组装膜通过S或N原子和Ag形成配位共价键吸附在炭纤维表面。

XPS further proves the chemisorption of self-assembly films on the carbon fiber surface via the formation of S-Ag or N-Ag bonds .

为此，本课题对天然的HA采用了离子交联法和共价键交联法进行了化学修饰，目的是延长HA在体内的滞留时间，并对两种交联方法进行了对比实验研究。

So natural HA is chemically modified in the study and the methods include ion cross-linking and covalent bond cross-linking .

紫外吸收光谱显示棉酚与DNA相互作用没有共价键形成.也不生成电荷迁移络台物。

The UV absorption spectrum shows that the interaction between gossypol and DNA does not result in the formation of a covalent bond or a charge transfer complex .

上述研究说明在与细胞色素C形成非共价键复合物的过程中，皂苷的有效结合区域在寡糖部分而非三萜部分。

This study shows that in the process of forming noncovalent complexes with Cytochrome c , the effective binding part of saponin is the oligosaccharides part rather than the triterpene part .

MCM-41介孔分子筛共价键联钴酞菁的制备，表征及性质

Preparation , Characterization and Properties of Cobalt Phthalocyanine Covalent Bonded to MCM-41

室温时C60分子化学吸附在Si（111）表面并与表面Si原子以共价键的形式相互杂化。

C60 molecules are chemisorbed on the Si ( 111 ) surface at room temperature via Si-C60 hybridization with covalent bonds .

每个共聚物分子由多个PHB链段和PEG链段构成，它们通过共价键相互连接而成为长链大分子。

Every copolymer molecule comprises several PHB and PEG blocks , which are extended by covalent bonds .

当我们说，r，代表的是核间距的时候，我们讨论的是一个距离，在一个键&一个共价键的两端的原子核之间的距离。

When we 're talking about r for internuclear distance , we 're talking about the distance between two different nuclei in a bond , in a covalent bond .