N-对甲基丙烯酰氧基-苄亚甲基-对溴苯亚胺液晶单体的合成及聚合

以对羟基苯甲醛，甲基丙烯酰氯及对溴苯胺为原料合成侧链型Ｓｃｈｉｆ碱液晶单体Ｎ－对甲基丙烯酰氧基－苄亚甲基－对溴苯亚胺，并以偶氮二异丁腈为引发剂进行溶液聚合．改进单体合成法，使反应总产率达到４０％以上．探讨了引发剂浓度，单体浓度对聚合轻化率及液晶聚合物相行为的影响．用ＤＳＣ，热台偏光显微镜对聚合产物进行了考察．聚合物表现出５０～６０℃的热致液晶温度区间     

4—乙酰氧基TEMPO晶体结构特征与有机铁磁性

合成了4－乙酰氧基－2，2，6，6－四甲基哌啶－1－氧（4－乙酰氧基TEMPO，化合物A），进行了晶体结构分析，比较了该化合物与4－甲基丙烯酰氧基TEMPO（化合物B）和4－丙烯酰氧基TEMPO（化合物C）在成晶分子间接触位置及相互作用的异同，说明了4－乙酰氧基TEMPO成晶结构特征，由化合物B，C铁磁性差异与分子结构及晶体结构关系的讨论，提出需对更多结构类似的化合物进行实验，以理解有机铁磁性产生的结构根源。     

盐酸2-芳基吗啉的合成与表征

α-溴-4-甲氧基苯乙酮、α-溴-2-氟苯丙酮、α-溴-4-苄氧基苯丙酮、6-甲氧基-2-（溴乙酰基）萘、6-甲氧基-2-（2-溴丙酰基）萘分别与二乙醇胺、2-氨基-1-丙醇、N-甲基乙醇胺、2-甲基-2-氨基-1-丙醇和甲酸发生非经典Leuckart—Wallach反应,合成相应的2-芳基吗啉,后者经盐酸酸化成盐,得到4-羟乙基-（4-甲氧基苯基）吗啉、盐酸3-甲基-4-羟乙基-（2-氟苯基）吗啉、盐酸3-甲基-4-羟乙基-（4-苄氧基苯基）吗啉、盐酸4-羟乙基-（6-甲氧基-2-萘基）吗啉、盐酸3-甲基-4-羟乙基-（6-甲氧基-2-萘基）吗啉、盐酸3,4-二甲基-2-（6-甲氧基-2-萘基）吗啉、盐酸3,5-二甲基-2-（6-甲氧基-2-萘基）吗啉和盐酸3,5,5-三甲基-2-（6-甲氧基-2-萘基）吗啉．产率为15．6％～58．9％．其结构经^1HNMR,^1H-^1H COSY,IR,MS确证．     

1-对氯苯氧基乙酰基-3,5二取代物的合成研究

于固─液相转移催化条件下,以PEG─400为催化剂,通过对氯苯酚与氯乙酸乙酯反应合成了对氯苯氧基乙酸乙酯（Ⅰ）．（Ⅰ）与85％的NH2NH2·H2O作用便得相应的酰肼（Ⅱ）．（Ⅱ）分别与乙酰雨酮和乙酰乙酸乙酯反应,便得到1-对氯苯氧基乙酰基-3,5-二甲基吡唑（Ⅲ）和1-对氯苯氧基乙酰基-3-甲基吡唑啉-5-酮（Ⅳ）．     

辉光放电电解等离子体引发制备三元共聚耐盐性高吸水树脂

以丙烯酸（AA）、丙烯酰胺（AM）及甲基丙烯酸-β-羟乙酯（HEMA）为单体,N,N’-亚甲基双丙烯酰胺（NMBA）为交联剂,采用辉光放电等离子体引发溶液聚合法合成了三元共聚耐盐性高吸水树脂（PAA—AM—HEMA）．考察了放电电压、放电时间、交联剂用量、丙烯酸对丙烯酰胺的摩尔比以及丙烯酸中和度等因素对树脂吸盐水率的影响．用红外光谱（FT—IR）和扫描电镜（SEM）对产物进行了表征．结果表明,耐盐性吸水树脂在室温下对蒸馏水和0．9％氯化钠水溶液的吸收量分别为996g·g^-1和82g·g^-1,10min时最大溶胀比为67％,且具有良好的凝胶强度和分散性能．     

水包水CPAM乳液的制备和结构形态表征

研究通过分散聚合法制备水包水聚丙烯酰胺乳液（CPAM）,结果表明,引发剂、单体和分散剂用量分别为0．05％、7．50％和1．25％时能得到较高特性粘度[η]的乳液;用IR、^1H—NMR和光学显微镜对CPAM的结构和形态进行表征．结果表明：聚合得到的聚合物为单体丙烯酰胺（AM）和甲基丙烯酰氧乙基三甲基氯化铵（DMC）的...     

α-氧代膦酸衍生物生物活性机理的探讨 ——O，O-二甲基-α-［2，4-二氯苯氧丙酰氧基］丙基膦酸酯对绿豆幼根抗氧化酶的影响

以不同浓度O，O-二甲基-α-［2，4-二氯苯氧丙酰氧基］丙基膦酸酯处理绿豆幼根，其过氧化物酶（POD）、超氧化物歧化酶（SOD）活性及其同工酶均发生相应变化，高浓度HJCE对POD和SOD均有较强的抑制作用，低浓度则对其抑制较弱或有一定的激活作用．同时，不同浓度的HJCE对绿豆幼根细胞相对存活率也有相似的影响．     

N—对甲基丙烯酰氧基—苄亚甲基—对溴苯亚胺液晶单体的合成…

以对羟基苯甲醛，甲基丙烯酰氯及对溴苯胺为原料合成侧链型Ｓｃｈｉｆｆ碱液晶单体Ｎ－对甲基丙酰氧基－苄亚甲基－对溴苯亚胺，并以偶氮二异丁腈为引发剂进行溶液聚合，改进单体合成法，使反应总产率达到４０％以上，探讨了引发剂浓度，单体浓度对聚合转化率及液晶聚合物相行的为的影响。     

KGM-AM-（DMAEA-EB）三元接枝共聚物的性能研究

以魔芋粉、丙烯酰胺和季铵盐等为原料,经接枝共聚合成了魔芋粉一丙烯酰胺一季铵盐类树脂。讨论了引发剂、丙烯酰胺、魔芋粉等的用量,反应时间和温度等因素对树脂溶胀性能的影响。结果表明反应温度为55-65℃,反应时间为4h,反应单体质量比为1：1,引发剂用量为0.5％（占单体总质量）,单体与KGM质量比为4：1下制得树脂的溶胀度可达到最大值149.85g／g。     

聚硅氧烷类侧链型液晶的合成与表征

合成了一种新的含介晶单元的烯烃单体，对－（4－烯丙氧基苯甲酰氧基）苯甲酸对－甲氧基苯酚酯。将这种单体与聚甲基氢硅氧烷进行了硅氢化反应，合成了一种新的聚硅氧烷酯类液晶（PMMS）。用IR和^1H-NMR对合成产物的结构进行了表征，确证了聚合物液晶的梳形结构以及硅氢化反应的完全程度，发现这种PMMS含有13％的α－加成侧链。借助DSC曲线测出了它们的相变温度。     

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     

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