脂酸和氧化锌促进的CPE／NBR自硫化反应

在ＣＰＥ／ＮＢＲ共混物中加入氧化锌和硬脂酸后能显著促进硫化反应，提高硫化速度及交联密度．硬脂酸和氧化锌用量对ＣＰＥ／ＮＢＲ共混物的反应性和物理性能有显著影响，当硬脂酸用量大于３份、氧化锌用量大于１份时，可得到综合性能良好的硫化胶．此外硫化温度和时间也影响自硫化共混物性能，该体系较适宜的硫化条件是１７０℃和３０ｍｉｎ．用硬脂酸和氧化锌促进的ＣＰＥ／ＮＢＲ自硫化共混物具有硫化速度快和硫化胶凝胶含量高的优点，并在一定程度上解决了ＣＰＥ／ＮＢＲ共硫化难的问题     

硬脂酸和氧化锌促进的CPE／NBR自硫化反应

在ＣＰＥ／ＮＢＲ共混物中加入氧化锌和硬脂酸后能显著促进硫化反应，提高硫化速度及交联密度，硬脂酸和氧化锌用量对ＣＰＥ／ＮＢＲ共混物的反应性和物理性能显著影响，当硬脂酸用量大于３份，氧化锌用量大于１份时，可得到综合性能良好的硫化胶，此外硫化温度和时间也影响自硫化共混物性能，该体系较适宜的硫化条件是１７０℃和３０ｍｉｎ，用硬脂酸和氧化锌促进的ＣＰＥ／ＮＢＲ自硫化共混物具有硫化速度快和硫化胶凝胶含量高的优     

聚氨酯／环氧树脂共混物形态结构的研究

用红外光谱分析了聚氨酯（ＰＵ）／环氧树脂（ＥＰ）共混物体系中的化学反应特征，用差示扫描量热法（ＤＳＣ）分析计算了ＰＵ预聚体分别同扩链剂、交联剂（第Ⅰ类反应），以及同环氧树脂之间反应（第Ⅱ类反应）的动力学参数．结果表明，第Ⅰ类反应和第Ⅱ类反应的活化能分别为３８．３ｋＪ·ｍｏｌ－１和５０．４ｋＪ·ｍｏｌ－１，在１２０℃时的速度常数分别为２．６３ｍｉｎ－１和０．７５ｍｉｎ－１．应用扫描电镜和动态力学性能分析了ＰＵ／ＥＰ共混物之间的形态结构特征，发现在一定组份比时两相间形成了互穿聚合物网络（ＩＰＮ），并存在化学交联，两相组份对共混物形态结构影响较大，讨论了其可能的原因．     

聚异戊二烯橡胶环化反应动力学研究

以红外光谱为主要手段研究了聚异戊二烯的环化反应动力学。测定了环化反应动力学参数：反应级数ｎ＝１，活化能Ｅａ＝８３１．１ｋＪ．ｍｏｌ＾－１，指前因子Ａ＝２．７５×１０＾１０ｍｉｎ＾－１，并测定了标准活化熵和活化焓，分别为△ｒ＾≠Ｓｍ＾φ＝－６９．１Ｊ．ｍｏｌ＾－１．Ｋ＾－１和△≠ｒＨｍ＾φ＝８０．４ｋＪ．ｍｏｌ＾－１，提出了该环化反应的可能机理。用１ＨＮＭＲ分析了环化聚异戊二烯的结构。     

过渡金属乙酰丙酮配合物引发淀粉与烯基单体接枝共聚

研究了Ｍｎ（Ⅲ）、Ｃｏ（Ⅲ）、Ｃｒ（Ⅲ）和Ｖ（Ⅳ）的乙酰丙酮配合物引发淀粉与ＭＭＡ、ＡＮ、ＡＭ和ＡＡ接枝共聚合反应的引发活性。实验表明，４种引发体系中，Ｍｎ（ａｃａｃ）３的引发活性最佳，它可以有效地引发淀粉与上述４种单体的接枝共聚合反应，并获得较高的ＰＧ；Ｃｏ（ａｃａｃ）３和Ｃｒ（ａｃａｃ）３仅对水溶性烯基单体ＡＭ、ＡＡ有良好的引发活性；Ｖｏ（ａｃａｃ）２对４种单体的引发活性均较低。４种单体中，水     

顺式(QuinH)_4[Mo_2O_4(NCS)_6]的晶体和分子结构

在不同的温度条件下，我们制得了（ＱｕｉｎＨ）_４［Ｍｏ_２Ｏ_４（ＮＣＳ）_６］的同分异构体（Ⅰ）和（Ⅱ）（此中，（Ｑｕｉｎ）＝喹啉（Ｃ９Ｈ７Ｎ））．（Ⅰ）属单斜晶系，空间群Ｐ２１／ｂ；晶胞参数，ａ＝１０．９９１（１１）Ａ°，ｂ＝２１．３７０（８）Ａ，ｃ＝２０．４３４（６）Ａ°，γ＝９０．０１（５）°；Ｍｒ＝１１２５．０，ｄｍ＝１．５６ｇ／ｃｍ３，Ｚ＝４（ｄｃａｌｃ＝１．５５７ｇ／ｃｍ３）．（Ⅱ）属单斜晶系，空间群Ｐ２１／ｂ，晶胞参数：ａ＝１０．１９Ａ°，ｂ＝１５．２４Ａ°，Ｃ＝１６．３６Ａ°，γ＝１１１．５°Ｍｒ＝１１２５．０，ｄｍ＝１．６０５ｇ／ｃｍ３，Ｚ＝２（ｄｃａｌｃ＝１．５８０ｇ／ｃｍ３）．用ＭｏＫａ射线在Ｅｎｒａｆ　Ｎｏｎｉｕｓ　 ＣＡＤ－４四园衍射仪收集晶体（Ⅰ）的衍射数据．通过三维Ｐａｔｔｅｒｓｏｎ函数和Ｆｏｕｒｉｅｒ函数合成方法，确定了（Ⅰ）的晶体和分子结构．最后，根据 Ⅰ＞３σ（Ⅰ）的２９５６个独立衍射点的强度数据，用最小二乘法把结构精修到Ｒ＝０．０５７．（Ⅰ）的阴离子［ＭＯ２Ｏ４（ＮＣＳ）６］４－是双氧桥双核结构，由共棱（Ｏｂ－Ｏｂ）的一对扭曲八面体组成．分子具有接近Ｃ２Ｖ的对称性．Ｑｕｉｎ?     

包含Vr（G）中所有顶点的圈

设Ｇ是一个ｎ阶２－连通图，ｒ是实数，并且，令Ｖｒ（Ｇ）＝｛ｖ∈Ｖ（Ｇ）｜ｄ（ｖ）≥ｒ｝．我们用Ｇ［Ｖｒ］表示由Ｖｒ（Ｇ）诱导的Ｇ的子图，ａ（Ｇ［Ｖｒ］）表示Ｇ［Ｖｒ］中的最大独立点数，σｋ（Ｇ）＝ｍｉｎ是Ｇ中的独立集｝．我们证明了如下结果，如果，则图Ｇ存在一个圈包含Ｖｒ（Ｇ）中的所有顶点．这个结果推广了Ｖｅｌｄｍａｎ的一个最新结果．并且解决了由朱永津教授提出的问题．     

GaAS-Ga_(1-x)Al_xAS双异质结激光器欧姆接触的研究

我们用正交表研究ＧａＡｓ的欧姆接触工艺．实验结果表明， ｐ－ＧａＡｓ用 Ａｕ—Ｃｒ 金、ｎ－ＧａＡｓ用 Ａｇ—Ｓｎ合金的欧姆接触工艺．比接触电阻率 Ｒｃ＜１０－４（欧姆）（厘 米）３应用于 ＧａＡｓ—Ｇａ１－ｘＡｌｘＡｓ双异质结激光器．得到良好的效果。     

关于（f~（k＋1））~（k）的值分布，Ⅱ

关于（ｆ~（ｋ＋１））~（ｋ）的值分布，Ⅱ黄珏建立了一个基本不等式（定理１），其中于｜Ｚ｜＜Ｒ＜（０＜Ｒ≤＋∞）内亚纯的函数ｆ（ｚ）的特征函数Ｔ（ｒ，ｆ）由计算函数与所界囿，而ｋ∈Ｎ与ａ∈Ｃ＼｛０｝．此外，还给出了这个不等式的一些应用．作为它的应用之一...     

模的内部弱消去

本文证明发如下定理：对于任意右Ｒ－模Ｍ，Ｍ内部弱消云的充分必要条件为；环ＥｎｄＲ（Ｍ）中的任意正则元都是单侧幺正则的。这一结果推广了１９７６年Ｇ．Ｅｈｒｌｉｃｈ「２」中的一个 要定理，并推广了１９８２年Ｒ；Ｇｕｒａｌｎｉｃｋ与Ｃ．Ｌａｎｓｋｉ的一个结果。     

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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