官能团

The acceleration of gravity is inversely proportional to the contact angle, and proportional to the surface energy when magnetic field intensity are equal.

接触角测量结果表明，几种表面对3种测试液体的接触角及表面能的变化趋势基本一致；强磁效应使得官能团修饰的钛合金表面接触角降低，表面能提高；磁场强度相等时，重力加速度与接触角呈反比关系，与表面能呈正比关系。

The model can acceptably simulate and predict the way of containment removal for further industrial applications.

液电等离子体改性过程扩展了活性炭的孔结构，并改变了活性炭表面官能团的分布。

To a certain extent, the effects of surface functional groups, especially oxygen functional groups, on adsorption properties were reviewed by changing of surface chemistry structure with the aid of different post treatments.

结合ACF后处理的结构变化以及吸附性能的改变，在一定程度上研究了表面基团特别是氧表面官能团对吸附性能的影响。

A novel trifunctional fluorinated epoxy compound was synthesized, which was cured with one alicyclic anhydride and two aromatic diamines, respectively.

固化后的含氟三官能团环氧树脂表现出高玻璃化转变温度、低介电常数、低热膨胀系数、低吸水率等特点。

Different functional group also brings different influence for the absorbance of alkali metal.

有机物官能团上的差异也将对碱金属元素的吸光度产生不同的影响。

In this thesis,based on the DFT+NEGF first-principles method,we construct a lead-molecule-lead sandwich system with single benzene-based molecule to investigate the relationship between the structure and properties of the molecular devices and the factors that influence properties of the molecular devices.Our computational investigations on these molecular devices are primarily concentrated on the effect of contact geometry between molecules and electrodes,the effect of side groups,the effect of different torsion angle between two phenyl rings and the effect of external electric field.This thesis consists of five chapters:In Chapter one,we mainly introduce the research background and development of the molecular electronics,including the experimental fabrication of molecular electronic components and theoretical simulation methods.Afterwards we discuss the questions that need to be solved in this area.Finally,the main contents of this thesis are listed.In Chapter two,we introduce the theoretical methods used in this thesis, including the main first-principles calculation methods,i.e.,the Density-Functionmethod and nonequilibrium Green\'s function.

本论文拟采用密度泛函理论和非平衡格林函数相结合的第一性原理计算方法，选取苯基小分子作为研究对象，构建了金属电极/有机小分子/金属电极三明治结构体系，系统地研究了苯基分子器件结构的改变与分子电输运性质之间的关系以及影响分子器件电输运性质的相关因素，其中重点研究了分子与电极间可能的接触结构改变、官能团、分子间的扭转角以及外电场对苯基分子电输运性质的影响，本论文主要包括以下五个章节的内容：第一章为综述部分，主要介绍了分子电子学产生的背景、分子器件的研究意义、当前研究分子器件的实验和主要理论方法，以及目前在研究分子器件中存在的一些问题，最后给出了本论文的主要研究内容和技术路线。

L-prolinamide/PPTS system was developed to catalyze Robinson annulation of 1,3-cyclohexanedione derivatives. Using this system, the functionalized carbon chain of Wieland-Wiescher ketone could be synthesized in high enantioselectivity, which was a useful synthon for structural diversity of total synthesis of natural product.

二、发现了L-prolinamide／PPTS体系可以催化Ronbinson环化1，3-环己二酮衍生物，实现含季碳且具有多官能团侧链的Wieland-Wiescher酮高对映选择性的合成，为天然产物结构多样性的合成奠定了基础。

The effects of the organic modifiers on the morphology of resulting silver nanoparticles were strongly dependent on the intrinsic properties of the functional groups and the reducibility of reductants.

有机修饰剂中含有的不同官能团对制得的纳米银形貌的影响主要取决于有机修饰剂的官能团特性和还原剂的还原能力。

The star SBS was synthesized with cyclohexane as solvent,tetrahydrofuran as activator,n－ butyl lithium as initiator and silicon tetrachloride as coupling agent.

星形SBS合成中具有实际价值的工艺是用多官能团的偶联剂使单官能团的活性双嵌段共聚物结合在一起，成为星形嵌段共聚物[1]。

This paper reviews its application in the selective oxidation of functional groups and the controlled oxidation of the same functional group.

本文从不同官能团的选择性氧化和同一官能团的控制氧化两个方面综述它对一些有机物的选择性氧化反应。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。