高温高压铝电解电容器工作电解液的研制

研制了一种耐高温高压铝电解电容器的工作电解液,对采用该配方制成的电容器样品的电性能进行检测,证实其能在125℃高温、400 V高压条件下稳定工作;并讨论了电解液添加剂对样品性能的影响.     

高纯度植酸用作铝电解电容器工作电解液添加剂试验的研究

铝电解电容器工作电解液中的添加剂，对改善电解液的性能，提高电容器的质量和使用寿命是重要的。本文报导了用高纯度植醚代替磷酸作电解液添加剂的试验、结果表明：以0．02％～2．0％的植酸作添加剂，能减少电极反应产生的气体，降低漏电流，提高电解液的稳定性，延长电容器的使用寿命。     

超级电容器工作电解质的研究概况

介绍了超级电容器工作电解质中的水系电解液和有机电解液的特点及研究成果，简要说明了固体电解质和凝胶电解质的特点．其中水系电解液研究较成熟，尤其是酸性和碱性电解液，但其腐蚀性强，电压窗口低，而后三者分解电压高，尤其固体电解质和凝胶电解质，使超级电容器向着小型化、超薄型化发展成为可能．     

二甘醇的提纯及在电解电容器中的应用

介绍了实验室生产规模的二甘醇提纯工艺和设备。由于采用了特殊的预处理技术和真空分馏提纯工艺，二甘醇产品纯度高于电容器级试剂的规定指标，还介绍了二甘醇在电解电容器中的应用效果。使用二甘醇－乙二醇混合溶剂体系，可显著提高电解电容器工作电解液的闪火电压，改善电容器的性能。这种溶剂体系特别适用于中、高压电解电容器。     

高压宽温工作电解液的研制

对宽温高压工作电解液进行了深入的研究,开发研制出了可用于400V高压铝电解电容器工作的宽温工作电解液,其主溶剂为乙二醇,主溶质为癸二酸,用此电解液制作的400V／100μF的铝电解电容器,通过了1000h日时105℃高温负荷寿命试验,取得了良好的试验结果。     

电解电容器使用支链多元羧酸铵盐电解液的研究

研制了电解电容器工作电解液中主溶质支链羧酸铵盐,并探讨支链羧酸铵盐与直链羧酸铵盐性能的差异.分别以两种羧酸铵盐为主溶质配制两组工作电解液,在相同条件下做对比实验得出:支链羧酸铵盐比直链羧酸铵盐达到闪火的时间短7 s,电导率大260 μs·m-1,闪火电压高8 V.用以上两组工作电解液装配铝电解电容器,并进行装灯应用试验,经125℃,2 500 h后直链羧酸铵盐组电容器△C:-8.4%,△tgδ:1 647%,而支链羧酸铵盐组电容器△C:-2.2%,△tgδ:165%,表明用支链羧酸铵盐的电容器性能优于用直链羧酸铵盐的电容器.     

（Ba0.7Sr0.3）TiO3铁电薄膜热敏电容器的研制

采用射频磁控浅射法制备了用于非致冷红外焦平面阵列的ＢＳＴ（（Ｂａ０．７Ｓｒ０．３）ＴｉＯ３）铁电薄膜热敏电容器，介绍了热敏电容器上下电极的选材和制备及铁电薄膜的制备工艺。根据热敏电容器的电容－温度曲线，分析了热敏电容器的工作原理。实验结果表明ＢＳＴ铁电薄膜热敏电容器可以工作在室温附近，约２６℃处。     

高比容铝电解电容器关键技术进展

简述了铝电解电容器的国内外发展现状,评述了近年来铝电解电容器用高介电常数复合阳极氧化膜及工作电解液的研究进展,指出了相关的技术难点和存在问题,探讨了高比容铝电解电容器的未来技术发展趋势。     

多层陶瓷电容器可靠性的研究

多层陶瓷电容器ＭＬＣ在实际使用中，其电性能参数将会随着时间发生不同程度的偏离，直至电容器被判定为失效。文章分析了多层陶瓷电容器的失效机理及其模型，提出了采用１４０℃、６倍额定电压的高加速寿命实验测试方案，作为国标ＧＢ１７７２－７９标准寿命实验的替代实验。     

有机电解液双电层电容器的制作及工艺优化

为了提高双电层电容器在有机电解液中的容量，研究了载炭量、牯接剂以及导电剂对电极性能的影响，并进行优化处理．采用交流阻抗及恒流充放电法对电容器性能进行测试．实验结果表明，优化后电容器的等效串联内阻大大降低；电容器在有机电解液中的电压能达到2．5V，电容器的比容量可达到30．31F／g，提高了电容器的循环性能．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that