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Op.48 no.2 in F-sharp, Andantino

江淮在线-电驴下载-eMule资源-VeryCD，分享互联网，电驴，电骡皖ICP备05001850号不保留任何版权

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。

So it can exactly reflects the depth of apparent resistivity of the anomaly. Furthermore, we can utilize geological datum from the borehole directly to calibrate the apparent resistivity anomaly near the borehole and reduce the ambiguity of the anomaly explanation.

在垂直地电剖面法中，由于电极是在地下供电，直流电流源的电场所受干扰比较小，电流线的走向是直接从地下到地表，场强较均匀而且场强值大，所以对深部岩溶分辨能力比较强，并可消除非岩溶体对异常的干扰，更能准确反映有视电阻率异常体的存在深度。

The approximate formula of polarization P and complex dielectric constant ε* are obtained.

建立了铁电液晶SmC*相介电特性的分子理论，求出在外加交变电场作用下液晶系统的自由能密度，得到极化强度〈P〉和复介电常数ε*的近似表达式。

But, most of the traditional mushroom structures are restricted to only single EBG frequency design. In this thesis, we propose a novel concept about the interlaced periodic arrayal of the mushroom structure with the suspending microstrip line. By the simulation and measurement result, it is verified that the mushroom structure with the suspending microstrip line can reveal multi-band EBG characteristic.

而传统的蕈状结构的应用，多半只有操作在单一频率的电磁带隙特性，而本论文就针对了蕈状结构结合悬置微带线架构的电磁带隙特性研究，并提出了一种新的穿插周期排列的概念，透过电路模拟与实作量测的验证，我们成功的让蕈状结构结合悬置微带线的架构展现出多频电磁带隙的特性，并且，我们利用了这一个新概念设计了一种新型的微波电路。

Based on the effects of atomic radius on the Curie temperature, new bismuth layer-structured piezoelectric ceramics Ca〓〓Bi〓Ti〓O〓 with high Curie temperatures and piezoelectric activities were obtained by A-site substitution for Ca.

本论文从取代原子半径对居里温度的影响入手，利用碱金属原子Li，Na，K和Ce原子复合取代层数m=4的铋层状铁电体CaBi〓Ti〓O〓中位于A位的Ca原子，在保持材料高居里温度的前提下获得了压电系数d〓明显改善的铋层状结构压电陶瓷。

By the use of a dielectric polarization theory this paper analyzes the field charging states of a ball-shaped and a cuboid shaped particulate placed in an electrical precipitator field.

用电介质极化理论对置于电除尘器电场中的球形粒子、长方体粒子的场荷电情况进行了分析，然后分别导出各自条件下的场荷电方程。

The theory about dielectric bolometer mode of BST was introduced, and the equation about pyroelectric coefficient of BST under dielectric bolometer mode was deduced, according to which computer-aided system for measuring BST ceramics'pyroelectric coefficient was manufacture.

本文介绍了关于BST介电探测模式的相关理论，在此基础上得出介电热辐射模式下的热释电系数公式，并依此原理，研制了测量BST热释电系数的计算机测试系统。

Then,it discusses the method of Parametric Design of E·P and Boolean operation in the parametric design.

阐述了建立电除尘器参数化模型的意义，介绍了ANSYS参数化设计语言APDL、ANSYS命令流及电除尘器的结构特点，并讨论了电除尘器参数化建模的方法及参数化建模中的布尔运算。

The main product in company has:Hand electric drill,pound at the electric drill and give or get an electric shock the,Cape face to dub out the machine and give or get an electric shock to plane,fix the side machine,The material of incises the,electricity buzz saw,molding tool electricity whets the etc.,and have passed the ISO9001 quantity system attestation,acquiring the Chinese electrician the product committee the Great Wall attestation,And common in the state of electrician product committee GS,CE,EMC attestation etc...

公司主要产品有：手电钻、冲击电钻、电锤、角向磨光机、电刨、修边机、石材切割机、电圆锯、模具电磨等，并已通ISO9001质量体系认证，获得中国电工产品委员会长城认证，及欧洲共同体电工产品委员会GS，CE，EMC认证等。本公司不断致力于新产品的开发，以满足日益增长的市场需求。竭诚欢迎国内外新老客户光临洽谈、精诚合作、共创辉煌明天。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。