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Density Functional Theory in connection with accurate LCAO basis sets and norm-conserving pseudopotentials were used to study two issues which are (1) The Selective Functionalization of Single-Walled Carbon Nanotubes with Diazonium Radical and (2) The Molecular Dynamic Simulated IR Spectrum of Adsorbed C3H3 and I on the Ag(111) Surface.For the first, we investigated (1) NO2C6H4 direct addition (2) NO2C6H4N2 dissociative addition reaction on semiconductor (8,0), metallic (9,0)and(5,5) carbon nanotubes.

第一部分模拟的结果显示,在半导体性质(8,0)和金属性质(9,0)、(5,5)奈米碳管上,硝基苯自由基(NO2C6H4)的直接加成反应於不同导电性质的奈米碳管间不具有选择性,而硝基苯重氮化合物自由基(NO2C6H4N2)的解离吸附反应会选择性的与金属性质奈米碳管发生反应,因为在金属性质的系统中,奈米碳管於过渡态时会藉由电荷的转移来稳定过渡态的结构,进而帮助反应更快的进行。

This paper deals with the partial capacitance calculation of the high voltage transmission line for the neutral beam injectors.

该文研究了中性束注入系统中高压传输线部分电容的求解问题;根据传输线多层同轴导电壳的结构特点,利用多重镜像法确定与平行导线相应的一系列的镜像线电荷,求解的问题变为由一系列平行线电荷构成的电场问题,传输线的部分电容则通过各导体间的电位系数来求得;这一方法避免了直接求解的困难以及大量数值计算等问题。

4The electrical double layer model, joining with the microstructure of CFRC,fractal electrical emission, electrothermal effect, thermoelectrical effect and electrical osmosis are used to analyze the mechanism of mechanoelectric effect and electromechanical effect of CFRC.

采用正交试验方法研究了不同配比分散剂对碳纤维在水泥基体中分散性的影响,得到了较佳分散剂配比,探讨了分散剂的作用机理和碳纤维长度分布规律;(2)研究了碳纤维水泥基复合材料中纤维掺量、水灰比、电极形式、载荷形式等对力电效应的影响,考察了CFRC力电效应的两种表现形式及在机敏混凝土结构上的应用;(3)研究了CFRC立方试块、CFRC梁和不含导电填料梁的电力效应,分析了电流大小、电流方向等与电致变形的关系;(4)根据界面电偶层模型,结合CFRC的微观结构,以及断裂电发射、电热效应、热电效应和电渗效应等分析了CFRC力电、电力效应的机理,阐明碳纤维的作用机制。

By dehydrochlorination reaction the poly[(2-methoxyl-5-octyloxy)phenylene vinylene] is synthesized and the material"s structure is characterized by nuclear magnetic resonance spectroscopy, infrared absorption spectrum, ultraviolet and visible spectrophotometry. At the meantime, the fluorescence spectrum is measured and the mechanism of fluorescence occurring is analyzed. Thermal Gravimetric Analyzer"s results show that the MO-PPV"s thermal stability is fine. Also the experiment of resolvable property indicates that the MO-PPV can well dissolve in chloroform. Through analyzing the film"s surface by Metaloscope and Atomic Force Microscope, the good filming is found.

通过脱氯缩合法合成了聚(2-甲氧基-5-辛氧基)对苯乙炔,并分别用核磁共振波谱法、红外吸收光谱法、紫外-可见分光光度法等对其进行了结构表征;测量了样品的荧光光谱,分析了荧光产生的机理;热失重仪分析了材料的热稳定性,研究表明MO-PPV材料具有良好的热稳定性;溶解性实验发现材料在氯仿中溶解性较好;金相显微镜和原子力显微镜研究了薄膜的表面形貌,发现该材料的成膜性良好;材料的导电性研究表明,固体材料在掺杂下才可以表现出导电特性,而配成溶液的材料导电性因溶剂的不同而不同,并随溶解时间的长短发生变化。

The index of flame retardant property,material,product structure and relevant method of test of the antiflaming flexible cable is established according to the standard of GB/T18301-2001《the Third Part of Burning Test of cables in the Condition of flame:Method of Buring Test of Bunchy Wires and Cables》.The Cable will emanate the bad gas in buring to causethe the second calamity,so the smoke capacity of the cable in burning should be tested according to the standard of IECl034-2(1991)《the Second Part of Method of Smoke Concentration Test ofCable 1n Burning:Procedure and Requirement ofTest》The Liberation of Gas 1n burning is tested according to the standard of IEC754-2(1991)《the Second Part of Test of Liberatlon of Burning Materlal from Cable:Method to Measure the ACidity with the Measured PH and Conductlvltv》.

对阻燃型软电缆所要求的阻燃性能指标,是根据GB/T18301-2001《电缆在火焰条件下的燃烧试验第3部分:成束电线或电缆的燃烧试验方法》标准的规定而确定其电缆的材料要求、产品结构和相应的试验方法;对于耐火性试验,并考虑到电缆在火焰中会散发有害气体,造成&二次灾害&,所以还规定了对电缆燃烧时发烟量进行试验,按IECl034-2(1991)《电缆在特定条件下燃烧的烟浓度试验方法第二部分试验步骤和要求》以及燃烧时析出气体按IEC754-2(1991)《取白电缆的村料燃烧时析山气体的试验第二部分用测量PH值和导电率来测量气体酸度的方法》进行试验。

Compared with non-nanopolyaniline synthesized by conventional emulsion polymerization, nanopolyaniline has the narrow and uniform distribution of particle dimension and the diameter of particle is about 4-5nm,and the conductivity reaches 3.2S·cm-1, which is more than 100 times higher than that of nanopolyaniline;Moreover, it has higher solubility in conventional solvent and the solubility reaches 95% in N-methyl pyrrolidone;what's more ,it has higher crystallinity and more uniform crystal proved by XRD, apparent blue shift indicated by UV, which makes it possible to prepare transparent conductive composite films.

结果表明,微乳液法合成的纳米聚苯胺与常规乳液法合成的非纳米聚苯胺相比,具有明显的优越性:粒径分布窄,95%的在10nm 以下,最大的不超过30nm;电导率较高,达到了3.2S/cm,提高了2 个数量级以上;在有机溶剂中的溶解度较高,其中在N-甲基吡咯烷酮中的溶解率达到了95%;X 射线衍射仪分析表明,纳米聚苯胺结晶度高,晶型更为规整;紫外可见光谱研究发现,纳米聚苯胺在可见光区有明显的蓝移,为制备透明的导电复合膜提供了可能。

A multiplayer chip LC resonator was fabricated using planar inductor and parallel plate capacitor. Because lumped inductor has small Q value and there is stray parameter effect in high permittivity substrate, the Q value of chip LC resonator is not high. Resonators based on λ/4 stripline with end short circuited were designed and fabricated. Input and output pads, coupled to the stripline using gap-coupling capacitor, are in the same layer with the center conductive strip. This new structure is very convenient for manufacturing in comparison with the conventional structure.

采用间隙电容耦合结构实现的谐振频率为1.8GHz四分之一波长终端短路带状线单端口谐振器的Q值最大值为225,谐振频率为1GHz双端口谐振器的Q值为83,谐振频率和Q值与耦合间隙、带状线的厚度和耦合引线长度有关;二分之一波长带状线谐振器的Q值和四分之一波长相比较尺寸较大,由于导电带较长,造成金属的损耗增加,从而导致谐振器的Q值较低;带状线结构的谐振器频率调节困难,本文提出了改变接地端的宽度实现谐振频率的微调方法,可实现频率调节量约1.5%。

In recent years, the company has successfully developed some special production lines for manufacturing ordinary batteries, namely, D size, Size C, and Size AA. Now running in the workshop is another assembly line for carbon rod processing machinery. For the past decade, it has introduced most advanced manufacturing techniques and control techniques from abroad, and therefore it has managed to develop automated machines for producing alkaline batteries. The automatic assembly lines that it possesses are: Lines LR6 and LR03 for 200 cells per minute, 300 cells per minute, 400 cells per minute, 600 cells per minute and 1000 cells per minute, Lines LR20, LR14 and LR61 for 150 cells per minute and 300 cells per minute. Powder spraying conducting film, machines for negative electrode calamine cream, diaphragm machines with a speed of 30 cells per minute; negative electrode electric welding machines with a speed of 200-300 cells per minute; current collector assembling machines with a speed of 200-400 cells per minute; battery tray fillers with a speed of 200-400 cells per minute, insulating ring assembling machines with a speed of 300 cells per minute; electroscope machines, 4-cell furling machines with a speed of 300 cells per minute.

公司先后开发了普通电池生产线:一号、二号、五号电池流水线和普通碳棒加工机械,特别是近十年来公司吸收并消化了国外最先进的生产工艺、控制技术,研制开发了国内最先进的自动化碱性电池机械,有200只/分钟、300只/分钟、400只/分钟、600只/分钟、1000只/分钟的LR6、LR03电池自动化生产流水线;有150只/分钟、300只/分钟的LR20、LR14、LR61电池生产线;有正极拌粉系统喷导电膜设备、负极拌锌膏;有30只/分钟的卷隔膜套机,200-300只/分钟负极钉高速点焊机,200-400只/分钟的集电体高速组装机,200-400只/分钟的电池装盘机,300只/分钟的绝缘圈组装机,300只/分钟的验电机和四节缩机等。

According to the experimental results, both the conducting area and material of current collector slices have great influence on the performance of micro PEMFC, especially the former one. The increment of cell's performance is finite by increasing the gas reheats temperature. The performance is better for open ratio 75% compared with 50% and 67%. The concentration polarization is improved by increasing the air flow rate at high current density and if the GDL diffusive capability in the latter cell could be promoted, the differences between these two cells' performances would be reduced.

由实验结果可知,集电片的导电面积与材料对於电池性能有显著的影响,尤其是前者;对於增加反应气体的再热温度,微型燃料电池增加的性能有限;双极板开孔率75%相较於开孔率为50%与67%有最佳的性能曲线;增加阴极气体空气的流量,可以改善高电流情况下的浓度极化现象,所以若我们能增加气体扩散层的扩散能力,则可以减少两者的性能差距。

In order to make these silver paste successfully used in commercial, a clear understanding is required for the complex relation between different parameters such as particles size, solid volume fraction, packing density on suspension printing and deformation and the mechanism of silver powder sintering shrinkage and the inorganic adhesive effect under the batch manufacture condition.The main emphasis of our researches was to improve the silver paste properties by developing a reliable, screen-printing paste suitable for fine lines and lower sintering porosity and good interface between thick film and glass substrate.

为开发电学性能稳定、高导电率、具有良好细线印刷性能及优良附着性的高性能电子浆料,本研究着眼于对影响参数进行详细剖析,找到关键控制参数,通过研究微观结构与粉末参数的对应关系,找到如何能制备出具有致密的厚膜结构与较低的孔隙率,并且其浆体与有机载体的界面区也要有明显的改善的电子浆体;同时对批量生产的银粉的形态与粉末烧结反应的收缩现象,无铅玻璃体系对银膜致密化等过程进行研究,获得致密高导的无铅银浆料。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。