1,1′-二烷基-乙酰基二茂铁的反相色谱研究

以甲醇-[乙酸-水(2％，V／V)]为流动相，用RP—TLC确定了1，1′-二烷基-乙酰基二茂铁RP—HPLC的分离条件．两系列同系物的Ru、lgk′分别与两个茂环上烷基碳原子数及流动相中甲醇的含量成线性关系；在同类异构体中，对于相同碳数的烷基，支链烷基取代物的保留值小于直链烷基取代物；当两个茂环上烷基相同，取代位置不同时，β-异构体的保留值小于弘异构体，表明β-异构体比α-异构体极性大．     

酚类化合物的反相高效液相色谱研究(Ⅰ)——定量测定及保留值规律初探

用反相高效液相色谱技术分离和测定了7种烷基取代酚、多酚的烷基取代物.经比较不同流动相体系的分离效果,选用三元流动相体系甲醇:乙腈:水最为理想.测定了几种酚类化合物的定量校正因子,确定了不同反应条件下得到的几种酚类混合物样品中各组分的质量百分比.同时获得了在一定的实验条件下,烷基取代酚的 lnk′_1 与碳数 n 间存在着良好的线性关系,lnk′_2 与二元流动相(甲醇:水)的百分比之间也有较好的线性关系.     

二茂铁甲酰基—1，1′—二烷基二茂铁的反相色谱研究

以甲醇－水为流动相对二茂铁甲酰基－1，1′-二烷基二茂铁进行了反相薄层色谱和反相高效液相色谱分离，两个系列同系物的保留值RM，olgk′分别与两个茂环上烷基碳原子数及流动相中甲醇的含量成线性关系；当两个茂环上烷基碳原子数相同，取代位置不同时，间位异构体的保留值小于邻位异构体，表明间位异构体比邻位异构体的极性强。     

二茂铁磺酸酯的反相色谱研究

以甲醇-水为流动相,用RP-TLC确定了二茂铁磺酸酯RP-HPLC的分离条件.结果表明同系物的保留值RM,lgk'分别与烷基碳原子数及流动相中甲醇的含量呈线性关系,并随烷基碳原子数的递增而增大.     

用灰色模型预测同系物的液相色谱保留值

利用灰色理论的ＧＭ（１,１）模型研究了５－二甲胺萘－１－磺基胺盐酸盐的同第少在不同组成流动相的反相高效液相色谱中的保留值与取代基碳原子数的关系。根据不同色谱条件下所建立的数学模型,计算和预测了６Ｄｎｓ胺同系物在６种不同流动相组成色谱系统中的保留值ｋ‘,并用相同的方法计算和预测了烷基取代苯和氨基苯甲酸酯系列物的液相色谱保留值。计算和预测值的相对偏差小于３％,误差率高,预测精度比献的预测结果好。     

烷基取代的聚噻吩——结构与性质关系

ＤＳＣ数据表明，烷基取代的聚噻吩的吸热转化温度随取代烷基中碳原子数的增加而降低，聚（３－烷基噻吩）（Ｐ１ＡＴＳ）及其与乙烯－醋酸乙烯酯共聚物的共混物的ＵＶ吸收与烷基侧链长度，浓度及温度有关。层奖结构的形成脑矣合物主链的棒－线转化是产生“热色显示”及“溶剂化显色”原因。     

吡啶烷基化反应的活性研究

使用烷基锂，烷基镁格氏试剂和脂肪酸自由基3种方法制备烷基吡啶，研究发现，不同的试剂反应活性不同，所得的主产物为α-位取代，用烷基锂所得主产物的收率较好，具有重要的合成意义．产物结构经IR，^1HNMR，^13CNMR，MS证实．     

用核磁共振波谱法研究反相液相色谱流动相强度

用ＮＭＲ考察了甲醇，乙酯，四氢呋喃，丙酮、１，４－二氧六环与水混合溶液的化学位移，提出了计算反相液相色谱流动相强度的计算公式：ｆ＝φ／Ｖ＊ｎ１／δｉ，式中ｆ为流动相强度，φ为流动相中有机改性剂的体积百分娄秋有机改性剂的摩尔分子体积，ｎｉ为改性剂中与碳原子相连的等价质子数，δｉ为有机改性剂中与碳原子相连的氢原子的化学位移。由于式得到的流动相强度值，用于不同体系之间流动相的等强度交换，获得满意结果，对     

二茂铁基长链烷基β-二酮的反相色谱分析

以乙腈－水，甲醇－「乙酸－水（１０％，Ｖ／Ｖ）」为ＲＰ－ＴＬＣ和ＢＰ－ＨＰＬＣ流动相测定了二茂铁锘长链烷基β－二酮同系物的反相色谱行为，同系物的保留值ＲＭ和ｌｏｇｋ＾１与化合物的长链烷基碳原子数及流动相中有机改性剂的体积分数均成线性关第八ｓ＾１和截距ｌｏｇｋｗ值也线性相关。     

重油和沥青中饱和碳的定量估计

建立了较完整的估计重油和沥青中饱和碳浓度数方法，其中包括环烷桥头碳、环烷甲基取代碳、环烷烷基（≥Ｃ２）取代碳等。基于理论分析，建立了估计环间的桥链和各种平均结构参数的方法，包括平均芳环环核数和环烷环环核数、芳环和环烷环烷工取代度、单元片上芳环和环烷环数。从实验数据出发，提出了烷基链长分布的公式。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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     

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