有机轻稀土吸附剂辛烷基磷酸铈的研制

辛烷基四价金属盐［Ｍ（Ｒ－ＯＰＯ＿３）＿２］是一类新型色谱固定相──均相键合相，本文报道了辛烷基磷酸铈（ＣＯＰＰ）的合成，结构及气相色谱性能，元素分析、红外、Ｘ射线粉末衍射分析结果表明：ＣＯＰＰ具有类似于α一磷酸铬的层状结构，重复单元为Ｃ＿Ｈ＿（１７）ＯＰＯ＿３ＣｅＯ＿３ＰＯＣ＿８Ｈ＿（１７），且层间碳链没有弯曲或扭曲现象。热量分析表明ＣＯＰＰ较硅胶键合相有更高的热稳定性。在ＣＯＰＰ上测定了△Ｈ与分子连通指数Ｘ值，并且首次发现了它们之间的良好线性。     

中位—四（对—苯甲酰氧基苯基）卟啉及其金属配合物的…

对中位－四（对－苯甲酰氧基苯基）卟啉的荧光光谱研究表明，锌配合物（ＺｎＴＢＣＯＰＰ）的荧光量子产率是卟啉配体（Ｈ２ＴＢＣＯＰＰ）的３倍，并发现在不同的激光波长激发时荧光相对强度－浓度曲线发生了变化，ＺｎＴＢＣＯＰＰ具有光敏性，在室内放置能逐渐分解。     

中位－四（对－苯甲酰氧基苯基）卟啉及其金属配合物的荧光性能研究

对中位－四（对－苯甲酰氧基苯基）卟啉的荧光光谱研究表明，锌配合物（ＺｎＴＢＣＯＰＰ）的荧光量子产率是卟啉配体（Ｈ＿２ＴＢＣＯＰＰ）的３倍，并发现在不同的激发波长激发时荧光相对强度。浓度曲线发生了变化，ＺｎＴＢＣＯＰＰ具有光敏性，在室内放置能逐渐分解。     

氧化钒与聚合物复合的热敏电阻材料

将过渡金属氧化物（Ｖ２Ｏ３、Ｖ２Ｏ５）分别与高密度聚乙烯（ＨＤＰＥ）、低密度聚乙烯（ＬＤＰＥ）、聚丙烯（ＰＰ）复合制备热敏电阻材料，其室温电阻率最低可达０．４Ω·ｃｍ，ＰＴＣ效应（ρｍａｘ／ρ２５℃）高达１０１０数量级。本文研究了导电微粒、聚合物的种类、数量对室温电阻率和ＰＴＣ效应的影响规律，并对复合材料的微观结构进行分析，用电子隧道效应理论解释了材料的ＰＴＣ效应。     

芳基三唑啉酮类除草剂三维定量构效关系研究

使用比较分子场分析法（ＣｏＭＦＡ）,对１８种抑制原卟啉原氧化酶（ＰＰＯ）的芳基三唑啉酮类化合物进行了三维定量构效关系（ＱＳＡＲ）研究,得到了具有较强预测能力的ＱＳＡＲ模型．该模型显示空间场和静电场效应在抑制ＰＰＯ活性方面均起重要作用,模型对进一步设计、合成具有更高活性的新型除草剂具有指导意义     

芳基三唑啉酮类除草剂三维定量构效关系研究

使用比较分析场分析法（ＣｏＭＦＡ）对１８种抑制原卟啉原氧化酶（ＰＰＯ）的芳基三唑啉酮类化合物进行了三维定量构效关系（ＱＳＡＲ）研究,得到了具有较强预测能力的ＱＳＡＲ模型,该模型显示空间场和静电场效应在抑制ＰＰＯ活性方面均起重要作用,模型对进一步设计,合成具有更高活性的新型除草剂具有指导意义。     

基于电荷转移体系聚合物/C60组合膜的光电导增强效应

利用物理喷束沉积技术在石英和ＩＴＯ衬底上获得了ＭＢＢ－ＰＰＶ／Ｃ６０和ＭＢ－ＰＰＶ／Ｃ６０组合薄膜,研究了聚合物特性和膜的结构对光电导的影响。光电导和时间分辨荧光结果表明两种组合膜的光电导较纯的ＰＰＶ和Ｃ６０有明显的增强效应,而且ＭＢＢ－ＰＰＶ／Ｃ６０的光电导优于ＭＢ－ＰＰＶ／Ｃ６０。结果表明在ＰＰＶ／Ｃ６０体系中存在着有效的激发传递过程。     

萃取剂钠盐NaDTMPP与AEO9混合胶团的增溶性

测定并计算了ＮａＤＴＭＰＰ（二（２,４,４－三甲基戊基）膦酸钠）,ＡＥＯ９（Ｃ１４Ｈ２９－Ｏ－（ＣＨ２ＣＨ２Ｏ））９单一体系和混合体系对正己烷的增溶及在胶团和水相的分配系数。结果表明单一体系在其它条件相同情况下,正己烷的增容量ＡＥＯ９体系〉ＮａＤＴＭＰＰ体系;混合体系中,随ＮａＤＴＭＰＰ所占摩尔分数α的增大,分子间作用增强,分配系数Ｋ减小,饱和时增溶物与表面活性剂的摩尔比ｎ１／ｎｓ也减少。     

不同品种梨多酚氧化酶特性及其抑制剂的研究

对不同品种梨多酚氧化酶（ＰＰＯ）粗提液，以邻苯二酚为底物，测定了不同ｐＨ值、温度及抑制剂对其活性的影响。结果表明：雪花梨、安梨、白梨、鸭梨ＰＰＯ的最适ｐＨ值分别为６．４，６．２，６．０，６．６；最适温度分别为２４，２２，２０，３０℃；在最适ｐＨ值和温度条件下果肉中所含ＰＰＯ的活性分别为３．２１２×１０３，４．７５２×１０３，３．３４４×１０３，３．８７２×１０３ｕ·ｇ－１ＦＷ。雪花梨和安梨ＰＰＯ对偏二亚硫酸钠反应最敏感，白梨ＰＰＯ对ＧＳＨ（谷胱甘肽）反应最敏感，鸭梨ＰＰＯ对Ｖｃ（维生素Ｃ）反应最敏感。     

微波加热对果泥PPO,POD活力的影响

水果制品加工中，微波能用于过氧化酶（ＰＯＤ，ＥＣ．１．１１．１．７）及多酚类氧化酶（ＰＰＯ，ＥＣ．１．１４．１８．１）的纯化。用微波在不同工艺条件下对胡萝卜，草莓，猕猴桃酱漂白，对ＰＰＯ，ＰＯＤ的活力钝化程度取决于水果种类及加热条件。     

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     

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     

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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