化学聚合制备的透明导电性聚苯胺／聚对苯二甲酸乙…

通过将经预处理的聚对苯二甲酸乙二酯薄膜浸入ＨＣｌ，氧化剂和苯胺的水溶液进行化学降合制得了高度透明和导电的ＰＡｎ／ＰＥＴ复合薄膜，这种技术是获得透明导电高分子薄膜的一种优良工具，本提供的数据可能会促进ＰＡｎ／ＰＥＴ复合薄膜作为一种新的功能材料的实际应用。     

聚苯胺导电复合物的合成研究

聚苯胺（ＰＡｎ）具有较高的室温电导率，但难于加工成型．锌盐离聚体具有较好的力学性能，Ａｎ在锌盐离聚体颗粒表面吸附聚合，可以得到电导率达１０．５Ｓ·ｃｍ（－１），抗拉强度为６．１１ＭＰａ的新型导电复合物．经ＴＥＭ研究其表明，证实该复合物为所需合成的ＰＡｎ复合物．     

计算加权Moore—Penrose逆AM^＋,N的一个改进的并 …

利用ＰＲＥＰＡＲＴＡＦＴ和ＳＡＲＷＡＴＥ Ｄ Ｖ＾〔６〕的一些结果,给出一个计算回权Ｍｏｏｒｅ－Ｐｅｎｒｏｓｅ逆ＡＮＭ＾＋的改进的并行算法,改善了文献〔８〕中提出的算法。在与ＰＲＥＰＡＲＴＡＦ Ｐ和ＳＡＲＷＡＴＥＤＶ文〔６〕中相同的假设下证明了改进的并行算法的时间复杂性和处理机台数分别为Ｔ＾－＝０（ｌｏｇｎ）＾２）,Ｐ＝ｍａｘ｛「ｍ／ｎ」＾２ｎ＾α／ｌｏｇｎ,２ｒ＾１／２ｎα／（ｌｏｇｒｌｏｇｎ）     

激光辐照SnO2超微粒薄膜的AES,热电动势率及阻抗谱

研究ＹＡＧ脉冲激光辐照对ＳｎＯ２超微业薄膜的改性作用，由ＡＥＳ分析表明，在大气环境中激光束的轰击可使薄膜表面碳吸量明显减少，并有一定的氧化作用。在３００－６００Ｋ范围内测量激光辐照前后样品的热电动热率（ＴＥＰ），发现激光辐照后ＴＥＰ值明显减小，薄膜发生晶化。激光辐照对超微粒薄膜的电学性质、晶界效应也有影响，表明激光束作用使薄膜粒间效应减弱     

超微粒子—有机聚合物薄膜的研究

我们用离子团束－飞行时间质谱（ＩＣＢ－ＴＯＦＭＳ）系统制备了金（Ａｕ）超微粒子－聚乙烯（ＰＥ）薄膜和Ｃ６０－聚乙烯薄膜。用透射电子显微镜（ＴＥＭ）分析了所制备的样品。它们的结构是Ａｕ超微粒子镶嵌在多晶的ＰＥ薄膜中，其中Ａｕ原子团呈球形，直径分布在２．０－５．０ｎｍ窄范围内，当沉积基底温度为９０℃时，Ａｕ原子团相互靠近，几乎连接起来，但仍保持原来大小。基底温度为１４０℃蒸积的Ｃ６０－ＰＥ薄膜具有晶态     

自支撑聚苯胺导电膜的电化学合成及性能

研究了以不锈钢为电极、高氯酸为掺杂剂、水为溶剂，将苯胺（Ａｎ）直接聚合成具有较好导电性能（电导率为６．６７ｓ·ｃｍ－１）和机械性能（抗张强度为０．３４Ｎ·ｍｍ－２，断裂伸长率为１２．６％）的聚苯胺（ＰＡｎ）自支撑膜的电化学方法，并探讨了电化学聚合反应条件对ＰＡｎ膜性能的影响，同时借助ＳＥＭ、ＩＲ、ＥＳＲ等手段表征了所得的聚合物膜。     

稀疏图上有效的MST多边更新并行算法

ＭＳＴ（最小生成树ＭｉｎｉｍｕｍＳｐａｎｎｉｎｇＴｒｅｅ之略）多边更新（ｕｐｄａｔｉｎｇ）问题定义如下：给定一个赋权图Ｇ（Ｖ,Ｅ）和Ｇ的一棵最小生成树Ｔ（Ｖ,ＥＴ）,其中｜Ｖ｜＝ｎ,ＥＴ是树边集合,（１）给Ｇ添加Ｋ条新边,或者（２）在图Ｇ上改变Ｋ条边的权后重新为Ｇ寻找一棵最小生成树,１≤Ｋ＜ｎ．本文基于ＳＩＭＤＣＲＥＷＰＲＡＭ共享存贮模型,运用“进－退”策略,并把这一特殊手段与已有的平行算法组合起来,为一类稀疏图（｜Ｅ-ＥＴ｜＝Ｏ（Ｋ））找到了一种有效的ＭＳＴ多边更新算法．该算法需要Ｏ（ｌｏｇｎｌｏｇＫ）时间和Ｏ（ｍａｘ｛ｎ,ｕＫ／ｌｏｇｎｌｏｇＫ｝）处理机．     

叶绿素铜钠盐敏化SnO2超微粒薄膜的光电转换性能

采用直流气体放电活化反应蒸发沉积法,制备ＳｎＯ２超微粒薄膜（ＵＰＦ）作光电极。ＳＥＭ分析结果表明,平均粒径为６０ｎｍ。采用叶绿素铜钠盐作光敏剂、ＳｎＯ２ＵＰＦ作光电极、Ｉ／Ｉ３氧化还原作电解液,导电玻璃或镀有金属铝膜的载玻片作集电极,我电化学基片。研究Ｉ／Ｉ３电解液,染料、两极距离及不同集电极对光电性能的影响,获得单位面积的开路电压（ＶＯＣ）为２６８ｍＶ,短路电流（ＩＳＣ）为２０μＡ。     

与单形内任意一点有关的一个不等式及其应用

本文证明了如下的不等式Πｎ＋１ｋ＝１Ｖｋ≤〔（ｎ＋１）＾ｎ－１／ｎ＾ｎ（ｎ！）＾２〕＾ｎ＋１／２Πｎ＋１ｋ＝１ＰＡ＾ｎｋ并应用这个不等式得到Ｔ的诸中线与其体积之间的一个不等式，Ｔ的垂足单形的不等式以及Ｐ到顶点Ａｋ之距与Ｐ到Ａｋ所对ｎ－１维侧面之距的一个不等式。     

超微粒子－有机聚合物薄膜的研究

我们用离子团束－飞行时间质谱（ＩＣＢ－ＴｏＦＭＳ）系统制备了金（Ａｕ）超微粒子－聚乙烯（ＰＥ）薄膜和Ｃ＿（６０）－聚乙烯薄膜。用透射电子显微镜（ＴＥＭ）分析了所制备的样品。它们的结构是Ａｕ超徽粒子镶嵌在多晶的ＰＥ薄膜中，其中Ａｕ原子团呈球形，直径分布在２．０－５．０ｎｍ窄范围内，当沉积基底温度为９０℃时，Ａｕ原子团相互靠近，几乎连接起来，但仍保持原来大小。基底温度为１４０℃蒸积的Ｃ＿（６０）－ｐＥ薄膜具有晶态结构，其晶格常数为１．４５４ｎｍ。     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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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