石棉对N,N—二甲基苯胺的吸附和氧化作用

研究了青石棉、温石棉、直闪石和铁石棉与不同度Ｎ，Ｎ－二甲基苯胺在１１０℃的吸附氧化反应，测定了产物的紫外可见光谱、红外光谱、元素分析和热分析数据，结果表明，四种石棉均能使ＤＭＡ氧化为甲基紫，质子可以提高石棉的氧化能力，此外，反应过程还生成一种紫外可见光景大吸收为３４０ｎｍ的物质，其结构有待进一步鉴定。     

苯乙烯对丙酮肟和N，N－二甲基甲酰胺~1HNMR谱溶剂效应的研究

该文在四氯化碳介质中考察了苯乙烯对丙酮肟和Ｎ，Ｎ－二甲基甲酰胺（ＤＭＦ）１ＨＮＭＲ谱的溶剂效应，观察到丙酮肟、ＤＭＦ和苯乙烯的化学位移随苯乙烯的摩尔分数增加而逐渐移向高场，丙酮肟和ＤＭＦ分子中的两个甲基向高场移动的程度不同，而且两个甲基和苯乙烯分子中的苯基的化学位移与混合溶剂中苯乙烯的摩尔分数呈线性关系．     

N,N—二乙基二硫代氨基甲酸烯丙基酯（ADC）的NMR研究

对Ｎ，Ｎ－二乙基二硫代氨基甲酸烯丙基酯（ＡＤＣ）的＾１Ｈ ＮＭＲ谱，＾１３Ｃ ＮＭＲ谱及Ｈ－＾１Ｈ．＾１３Ｃ－＾１Ｈ化学位移相关谱测定结果进行了讨论。对＾１３Ｃ ＮＭＲ和＾１Ｈ ＮＭＲ谱峰作出了归属，并确认了ＡＤＣ的链结构。     

N－（O，O－二烷基）磷酰化丙氨酸与醇的反应性研究

本文研究了Ｎ－（Ｏ，Ｏ－二烷基）磷酰化丙氨酸（ＤＲＰ－Ａｌａ）在温和条件下与多元醇的反应，经３１Ｐ－ＮＭＲ、ＦＡＷＭＳ证实，发生了成肽，成酯和酯交换反应，并提出了相应的反应机理．     

给定(N-1)条边界曲线及其跨界导矢构造 N 边域曲面

在ＣＡＤ／ＣＡＭ系统的曲面设计中，常常需要根据给定的（Ｎ－１）条边界曲线及其跨界导矢构造Ｎ边域曲面。通过将Ｃｏｏｎｓ曲面的设计思想和Ｂ样条方法相结合，对任意的Ｎ（Ｎ≥４）边域曲面，提出了一种根据给定的（Ｎ－１）条边界曲线及其跨界导矢构造边域曲面的新方法，讨论了所构造曲面奇异性的消除，研究了其向ＮＵＲＢＳ曲面的转换方法。这种方法的优点在于：１）Ｎ边域曲面整体Ｃ１连续；２）Ｎ边域曲面的跨界导矢可以独立给定，不需要满足兼容性条件；３）可以用Ｎ片ＮＵＲＢＳ曲面来形成与相邻曲面近似Ｇ１拼接的Ｎ边域曲面。由于ＮＵＲＢＳ已成为ＣＡＤ／ＣＡＭ系统中曲面的基本表示形式和数据转换的标准，从而本方法易于在现有的ＣＡＤ／ＣＡＭ系统中实现。     

N,N—二甲基—二烯丙基氯化铵的合成及其聚合反应

以烯丙基氯、二甲胺和氢氧化钠为原料的一步法合成工艺,成功进行了ＤＭＤＡＡＣ单体的合成,研究了以水为介质,过硫酸铵为引发剂的ＤＭＤＡＡＣ水溶液聚合反应,探讨了引发剂浓度、单体浓度对聚合反应转化率及聚合物分子量的影响,并用ＩＲ和＾１Ｈ－ＮＭＲ进行了分析表征。     

以12-钨(钼)磷杂多酸为掺杂剂的导电聚N,N-二甲基苯胺的合成与导电性

以１２－钨（钼）磷杂多酸为掺杂剂,合成了聚Ｎ,Ｎ－二甲苯胺,并利用ＩＣＰ、元素分析、循环伏安、红外光谱及室温固体电导率的测定等手段进行了表征,结果表明,掺杂的ＰＤＭＡｎ／ＰＭ１２的室温导电率约为１２－１３Ｓ／ｃｍ。     

12—钨锗酸电荷转移配合物的合成,表征与光色性研究

以吡啶（Ｐｙ）、Ｎ,Ｎ二甲基苯胺（ＤＭＡ）和１２钨锗酸为原料,用化学法合成了两个新的１２钨锗酸电荷转移配合物．用元素分析和热重分析确定它们的分子式为（ＨＰｙ）３ＨＧｅＷ１２Ｏ４０·Ｐｙ·２ＤＭＦ和（ＨＤＭＡ）３ＨＧｅＷ１２Ｏ４０·ＤＭＡ·２ＤＭＦ．红外和紫外光谱表明有机电子给体与杂多阴离子间有强烈的相互作用,生成了电荷转移配合物．紫外可见光谱测试发现在６４５ｎｍ附近有一个新的吸收峰,对应于Ｗ（Ⅴ）→Ｗ（Ⅵ）的ＩＶＣＴ跃迁,结合极谱循环伏安测试,发现合成产物在光的作用下发生可逆的光还原反应．     

N,N‘—二乙基二硫代氨基甲酸苄酯紫外光聚合的特性 …

合成了Ｎ，Ｎ’－二乙基二硫代氨基甲酸苄酯（ＢＤＣ）。在合成时，反应温度越高，反应时间越长，亲核取代反应越完全。以ＢＤＣ作为ｉｎｉｆｅｒｔｅｒ引发Ｓｔ、ＭＭＡ光聚合，单体Ｓｔ和ＭＭＡ的转化率随光照时间的增加而增加，但没有呈现出严格的线性关系。此外，反应温度温度高，单体转化率增加；ＰＳ和ＰＭＭＡ的粘均分子量则随光照时间和增加而呈线性增加的关系，所得聚合物的分子量分布较宽。ｉｎｉｆｅｒｔｅｒＢＤＣ可以进     

两种4—N,N—二甲氨基偶氮苯—4‘—磺酸酯衍生物的合成及其在极 …

报道了两种４－Ｎ，Ｎ－二甲基偶氮苯－４’－磺酸酯衍生物的合成，获得了主客及侧链极化聚合物薄膜的ｄ３３值，它们分别高于目前较多的ＤＲ－１／ＰＭＭＡ，ＣＥＭ－ＭＭＡ的对应值，并探讨了其影响因素。     

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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