共价的

No cracks and holes had been detected. Presence of elements Ni, P and Si were in the simple state of metallic bond Ni, P element and covalent bond SiC, respectively.

元素存在形态主要表现为Ni和P以单质的形式存在，Si以共价健SiC的形式存在，Ni-Ni之间以金属键进行结合。

These ingredients includes epidermal growth factor, hepatocyte growth factor, dimethyl sulfoxide, phenobarbital sodium and all trans-retinoic acid. We isolate and culture primary 10-weeks-old human fetal hepatocytes, observe hepatocytes form and its function markers. Inoculate hepatocytes with HBV Dane particles to observe if HBV susceptibility of fetal hepatocytes can be induced in vitro. To detect HBV covalently closed circular DNA within hepatocytes, we improve the existent PCR method.

基于上述假设，我们设计了10种培养条件，在自行设计的无血清培养基中添加不同的细胞分化诱导物，包括表皮生长因子、肝细胞生长因子、二甲基亚砜、苯巴比妥钠、全反式维甲酸等，分离孕10周龄人胎肝细胞进行原代培养，观测肝细胞形态及功能指标变化，并定时给予HBV感染，观察能否在体外诱导胎肝细胞出现HBV易感性；为检测肝细胞内HBV共价闭合环状DNA(covalently closed circular DNA，cccDNA)，我们改进了现有的PCR检测法。

The present work was to study the effect of synthetic bioactive RGD peptides on the endothelialization of polyethylene terephthalate surface.

本文在聚酯薄膜表面共价结合人工合成的RGD三肽，研究RGD在材料内皮化过程中的作用。

Methods DNA probe with thiol group in 5' terminus was covalently linked to the surface of gold membrane by self-assembled monolayer technique, Changes of the electrochemical parameters and microscopic construction in gold membrane were observed with cireled voltammeter and scanning tunnel microscopySTM...

其中 ，巯基化合物SAM是研究得最为深入的体系。本研究将 5'端带有巯基的寡聚核苷酸探针通过SAM技术共价交

Glucose an aldohexose, exists as D and L forms. The furthest asymmetric carbon from the aldehyde group is C-5. D-glucose is called D because the configuration of the atoms bonded to C-5 is the same as for D-gly- ceraldehyde. Similarly D-fructose﹙a ketohexose﹚ is designated D because the configuration

环状结构：醛基或酮基跟一个羟基反应共价闭合，形式上一个糖的醛基和羟基反应生成了一个半缩醛，而一个酮基与一个羟基反应生成一个半缩酮，在同一分子内这个反应能进行，单糖的开链式形成了糖环，葡萄糖环形成一个六碳环。

The most commonly used method for the covalent binding of biomolecules onto 1-D nanostructures is through the diimide-activated amidation of carboxylic acid terminated nanostructures.

在一维纳米结构上共价结合生物分子最常用的做法是对纳米结构的C端进行二酰亚胺活化。

Currently, two kinds of reactions are often employed, including derivation of carboxy groups and direct addition.

目前CNTs的共价修饰主要通过两类反应来实现：羟基的衍生反应和直接加成反应。

Currently, two kinds of reactions are often employed, including derivation of carboxy groups and direct addition.

目前CNTs的共价修饰主要通过两类反应来实现：羧基的衍生反应和直接加成反应。

Lysyl oxidase catalyses the cross-linking of fibrillar molecule of type I collagen into mature insoluble extracellular matrix.

离胺基氧化酶会催化胶原蛋白共价交联的过程以形成成熟不可溶的细胞外间质成份。

This experiment involves the synthesis of a relatively simple covalent compound.

这个实验介绍了一种人工合成相对简单的共价化合物的方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。