LDPE－g－MALa离聚物的合成及表征

合成了低密度聚乙烯接枝马来酸镧（ＬＤＰＥ－ｇ－ＭＡＬａ）离聚物，并对该离聚物进行了确证．实验结果表明：在ＬＤＰＥ－ｇ－ＭＡＬａ的ＩＲ谱上于１６０５ｃｍ－１处出现了羧酸盐的Ｃ＝Ｏ伸缩振动峰，同时ＷＡＸＤ谱上新出现的２θ＝１６．７０°，１３．８０°两个强衍射峰，也证明确有离子微区的存在．ＤＳＣ研究说明该接技产物结晶度降低，结晶速率加快．ＴＧＡ图则说明离子化可以提高聚合物的稳定性．     

PE—g—MAA在PA1010／PE合金中的增容作用研究

研究ＰＥ－ｇ－ＭＡＡ（聚乙烯接枝甲基丙烯酸）或ＧＰＥ在ＰＡ１０１０／ＰＥ（尼龙１０１０／聚乙烯）合金中的增容作用。结果表明：合金中ＧＰＥ与ＰＡ１０１０反应形成了ＰＥ－ｇ－ＭＡＡ－ｇ－ＰＡ１０１０增容剂，它影响了ＰＡ１０１０－ＰＥ合金的结构，改善了其力学性能。     

PE－g－MAA在PA1010／PE合金中的增容作用研究

研究ＰＥ－ｇ－ＭＡＡ（聚乙烯接枝甲基丙烯酸）或ＧＰＥ在ＰＡ１０１０／ＰＥ（尼龙１０１０／聚乙烯）合金中的增容作用．结果表明：合金中ＧＰＥ与ＰＡ１０１０反应形成了ＰＥ－ｇ－ＭＡＡ－ｇ－ＰＡ１０１０增容剂，它影响了ＰＡ１０１０－ＰＥ合金的结构，改善了其力学性能．     

Mg^2＋—ADP—钒酸根三元体系的核磁共振法研究

用＾５１ＶＮＭＲ滴定法研究在Ｍｇ＾２＋－ＡＤＰ－ＶＯ４＾３－三元体系中的物种分布，通过分析用Ｍｇ＾２＋一ＡＤＰ－钒酸根混合溶液时＾５１Ｖ核磁谱峰的变化，指出溶液中形成了Ｍｇ－Ｖ２Ａ２（Ｖ２Ａ２为两个钒酸根和两个ＡＤＰ分子形成的双核配合物的简写）和Ｍｇ－ＡＤＰＶ（ＡＤＰＶ代表一个四面体钒酸根单体与ＡＤＰ中的β－磷酸根缩合形成的酸酐），测得Ｍｇ－Ｖ２Ａ２及Ｍｇ－ＡＤＰＶ的形成常数分别是７２．５ｍｏｌ＾     

增容剂CPE—g—AS对HDPE／AS共混本系性能的影响

研究了氯化聚乙烯与苯乙烯、丙烯腈的接枝共聚物（ＣＰＥ－ｇ－ＡＳ）对高密度聚乙烯／苯乙稀－丙烯腈聚物（ＨＤＰＥ／ＡＳ）共混体系热性能、力学性能及形态的影响,差示扫描热量法（ＤＳＣ）测度表明采用ＣＰＥ－ｇ－ＡＳ作为ＨＤＰＥ／ＡＳ共混体系的增容剂增加了两相间的相互作用力,扫描电镜ＳＥＭ照片显示分散相的粒子尺寸明显减少,ＣＰＥ－ｇ－ＡＳ有效的提高了共混体系的力学性能。     

LDPE—g—MALa离聚物的合成及表征

合成了低密度聚乙烯接枝马到镧离聚物，并对该离聚物进行了确证。实验结果表明：在ＬＤＰＥ－ｇ－ＭＡＬａ的ＩＲ谱上于１６０５ｃｍ＾－１处出现了羧酸盐的Ｃ＝０伸缩振动峰，同时ＷＡＢＤ谱上新出现的２θ＝１６．７０°，１３．８０°两个强衍射峰，也证明了有离子微区的存在，ＤＳＣ研究说明了该接枝产物结昌度降低，结晶速度加快，ＴＧＡ图则说明离子化可以提高聚合物的稳定性。     

PA6／EPDM共混体系界面与韧性的研究

本文采用马来酸酐对ＥＰＤＭ进行溶融接枝改性,然后对ＰＡ６／ＥＰＤＭ与ＰＡ６ＥＰＤＭ－ｇ－ＭＡＨ两类共混物的界面与韧性及其相互关系进行了研究。结果表明：ＰＡ６／ＥＰＤＭ－ｇ－ＭＡＨ的冲击强度较ＰＡ６的冲击强度提高５￣６倍,较ＰＡ６／ＥＰＤＭ提高３￣４倍,扫描电镜下的冲击及拉伸断口形貌、偏光显微镜下的结果形态、界面张力γ１２变化,证明了两类共混物的相容性及相界面的差异,为此也论证了ＥＰＤＭ－ｇ－ＭＡＨ     

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．     

EMD在Pb—Ag—Ca新型合金阳极上竞争反应的研究

Ｏ２在变质Ｐｂ－Ａｇ－Ｃａ阳极（ＰＡＣ阳极）分别在２０％Ｈ２ＳＯ４及／Ｍｏｌ／Ｌ ＭｎＳＯ４－２０％Ｈ２ＳＯ４体系中过电位ηＯ２测定的结果（２９８Ｋ）及热力学的计算，讨论承ＰＡＣ阳极上的两个主要竞争反应即ＭｎＯ２（ＥＭＤ）电沉积及Ｏ２的析了在不同条件下的变迁。     

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）     

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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