金属酞菁LB膜的制备及结构表征

研究了金属酞菁化合物四（２，４－二甲基苯氧基）酞菁铜和四（２，４－二甲基苯氧基）酞菁镍在汽－液界面上的成膜特性，制备了相应的Ｌａｎｇｍｕｉｒ－Ｂｌｏｄｇｅｔｔ（ＬＢ）膜。利用紫外可见吸收及偏振紫外可见吸收谱，表征了ＬＢ膜中的酞菁分子主要以二聚体的形式相对于基片水平排列。以酞菁ＬＢ膜为取向层制成液晶盒，取向向列型液晶Ｅ＿７。通过偏光显微镜及锥光干涉系统，确定液晶分子在ＬＢ膜上的排列情况，并进行了电光测试，讨论了导致不同取向效果的机理。     

磺化酞菁铜L-B膜的制备及紫外可见吸收光谱

研究磺化酞菁铜（ＣｕＴｓＰｃ）Ｌ－Ｂ膜的制备方法,并利用紫外可见吸收光谱研究它的结构。结果表明：磺化酞菁铜（ＣｕＴｓＰｃ）是具有独特的平面分子结构的非两亲性长链分子,可采用静电相互作用来制备这种Ｌ－Ｂ膜。（ＣｕＴｓＰｃ）Ｌ－Ｂ膜中的磺化酞菁铜分子主要以面对面的二聚体形式存在,磺化酞菁铜分子平面按平行于载片平面的方式排列。     

蓝色有机薄膜电致发光材料LiBq4

合成了一种新型的金属有机螯合物ＬｉＢｑ４（Ｌｉｔｈｉｕｍ ｔｅｔｒａ－（８－ｈｙｄｒｏｘｙ－ｑｕｉｎｏｌｉｎａｔｏ）ｂｏｒｏｎ）,并研究了其光致发光（ＰＬ）和电致发光（ＥＬ）的性质,在以ＬｉＢｑ４为发光层的三层结构器件ＩＴＯ／ＴＰＰ（５０ｎｍ）／ＬｉＢｑ４（５０ｎｍ）／ＡｌＱ（５ｎｍ）／Ａｌ中得到了蓝色发光。     

光电器件用铟锡氧化物ITO薄膜的制备及特性研究

本文采用真空瞬时蒸镀加氧化热处理方法在玻璃和硅衬底上生长出ＩＴＯ）铟锡氧化物薄膜。电阻率～１０￣（－２）Ωｃｍ，可见光区几乎透明，透射率达９４％（６３２８Ａ单色光源）。采用Ｘ光衍射和ＳＥＭ技术分析了氧化热处理前后薄膜中组份及微结构的变化。ＩＴＯ／ｐ－Ｓｉ异质结在日照下（ＡＭ１．５，１００ｍｗ／ｃｍ￣２）开路电压达１８０ｍｖ，该方法制各的ＩＴＯ膜可作为光电接收电极层有效地应用在各类光电器件上。     

L－B单分子膜制备的MIS结构和电容电压特性

利用Ｌ－Ｂ单分子功能膜的绝缘性制作ＭＩＳ器件．通过对它的结构和电容－电压（Ｃ－Ｕ）特性曲线的研究，发现Ｌ－Ｂ膜可以改善ＭＯＳ器件的性能和消除ＭＯＳ器件的“异常”Ｃ－Ｕ特性现象，利用Ｃ－Ｕ特性曲线可以检测Ｌ－Ｂ膜成膜质量，利用零偏压时的电容值可以计算各成膜材料的介电常数．     

两亲配合物Cd(HQ)_2LB膜的结构及其电致发光器件研究

制备了两亲配合物二［Ｎ一十六烷基－８－羟基－２－喹啉甲酰胺］合镉［Ｃｄ（ＨＱ）２］的ＬＢ膜材料．采用π－Ａ等温线、紫外可见吸收光谱和荧光光谱等方法研究了ＬＢ膜的结构．结果表明：ＬＢ膜分子排列是二维有序的超晶结构，Ｃｄ（ＨＱ）２分子的两个长链烷基垂直于亚相平面，两个亲水头基（８－羟基喹啉）相对于法线以一定的角度倾斜；Ｃｄ（ＨＱ）２的单分子占有面积为０．７３ｎｍ２，单层高度２．５２ｎｍ．其ＬＢ膜的高荧光性质可作为电致发光器件的发光材料，器件的驱动电压为７Ｖ，最大亮度为１２００ｃｄ／ｍ２．     

萘酞菁铜LB膜在气敏传感器中的应用研究

首次选用取代的萘酞菁铜为ＬＢ膜材料，对它的成膜特性及气敏特性进行了研究．结果表明，萘酞菁铜可作为检测低浓度ＮＯ２的气敏材料     

可测系数的二阶非线性抛物型方程组的初－斜微商问题

可测系数的二阶非线性抛物型方程组的初－斜微商问题闻国椿（北京大学数学系，１００８７１，北京）作者：男，教授，１９３０年生，研究复分析，边值问题，偏微分方程和奇异积分方程．（责任编辑杨金华责任校对沈乃录）ＳＯＬＶＡＢＩＬＩＴＹＯＦＩＮＩＴＩＡＬ－ＯＢＬ...     

9-(3,5-二溴)水杨基荧光酮-铝-CTMAB三元络合物显色反应的研究及应用

研究了９－（３,５－二溴）水杨基荧光酮（简称ＤＢＳＦ）－铝－表面活性剂溴化十六烷基三甲胺（ＣＴＭＡＢ）的显色反应条件和光度性质．在ｐＨ５．１０的六次甲基四胺－ＨＣｌ缓冲介质中,当加入ＣＴＭＡＢ后,Ａｌ（Ⅲ）与试剂形成灵敏度较高的三元胶束配合物,最大吸收峰位于５６０ｎｍ处,表现摩尔吸光系数为１．９４×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,铝（Ⅲ）含量在０～６μｇ／２５ｍｌ范围内符合比耳定律．拟定方法在掩蔽剂存在下,测定了铁黄铜,铸造铜等样品中铝的含量,结果与标准值相符     

L—B单分子膜制备的MIS结构和电容电压特性

利用Ｌ－Ｂ单分子功能膜的绝缘性制作ＭＩＳ器件，通过对它的结构和电容－电压特性曲线的研究，发现ＬＢ膜可以改善ＭＯＳ器件的性能和消除ＭＯＳ器件的“异常”Ｃ－Ｕ特性现象，利用ＣＵ特性曲线可以检测Ｌ－Ｂ膜成膜质量，利用零偏压时的电容值可以计算各成膜材料的介电常数。     

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.     

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.     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has