齿叶橐吾中甾醇类化合物结构研究

从齿叶橐吾根部的（Ｖ（石油醚）：Ｖ（乙醚）；Ｖ（甲醇）＝１：１：１）提取液中分离出４个甾醇类化合物，经ＩＲ，＾１ＮＨＭＲ，＾１３ＣＮＭＲ，ＤＥＰＴ，ＥＩＭＳ等光谱方法鉴定它们为：麦角甾－６，２２－二烯－３β，５α，８α－三醇（１），豆甾－５－烯－３β－醇－７酮，豆甾－４－烯－６β－醇－３－酮，豆甾－４－烯－６α－醇－３－酮，其中化合物１在天然界属首次发现。     

含2,3—二氯—5,6—二氰基对苯醌（DDQ）或其自由基离子（DD…

通过联苯甲酰双缩肼与不同金属乙酸盐及２，３－二氯－５，６－二氰基对苯醌自由基离子反应，合成了３个分子式为（ＭＬ）＾２＋（ＤＤＱ＾＝）２（Ｍ＝Ｍｎ，Ｚｎ，Ｃｄ）的三元配合物及２个分子式为（ＭＬ）＾２＋（ＤＤＱ＾－）（ＯＡｃ＾－）（Ｍ＝Ｎｉ，Ｐｂ）的四元配合物。元素分析确定了它们的组成，经红外光谱，紫外－可见光谱及摩尔电导的测定对其配位情况进行了讨论。     

3位联二杂环取代-2H-异色满并[4,3-C]吡唑衍生物的合成

以异色满酮－4为起始原料，经Claisen缩合得其β－二酮衍生物，再与水合肼进行Knorr反应环合成3－乙氧甲酰基和3－肼甲酰基异色满并吡唑衍生物，通过酰肼与糖醛反应成腙后，分别与巯基乙酸和氯乙酰氯反应合成了标题化合物。     

单－6－（咪唑－1－基）－β－环糊精的合成

由β－ＣＤ—ＯＴｓ或β－ＣＤ－Ｉ在ＤＭＦ中，和过量咪唑反应，合成了单－６－（咪唑－１－基）－β－环糊精（简称β－ＤＣ－Ｉｍ）．产率较高，分别为６０％和６２％．并对化合物的结构进行了ＴＬＣ、ＩＲ、ＵＶ、１ＨＮＭＲ及元素分析等确证．其中ＵＶ数据未见文献报道．     

(6,7-二甲氧基-4-亚甲基)香豆素基-单氮杂-18-冠-6的阳离子识别性能研究

研究了新合成的题示功能发光试剂（ＤＭＣ－ ＭＡＣ（Ｏ５）） 在乙腈中与Ｌｉ＋ 、Ｎａ＋ 、Ｋ＋ 、Ｍｇ２ ＋ 、Ｂａ２ ＋ 和Ｐｂ２ ＋ 的主客体识别性质． 利用荧光法测定了主－ 客化合物的稳定常数和识别敏感因子． 研究表明, 由于在香豆素的６ 位上引入一个甲氧基, 对应的主－ 客配合物的稳定常数较（７－ 甲氧基－ ４ － 亚甲基） 香豆素基－ 单氮杂－ １８ － 冠－ ６ （ ＭＭＣ－ ＭＡＣ（Ｏ５）） 与阳离子配位的稳定常数又有所增高．     

5-肼基哒嗪酮衍生物的合成及其生物活性研究

从中间体２－特丁基－４－氯－５－肼基哒嗪酮２ａ出发,合成得到两类目标化合物２－特丁基－４－氯－５－取代脘哒嗪酮３ａ～３ｊ和２－特丁基－５－吡唑基哒嗪酮５ａ～５ｂ,并对中间体２ａ及目标产物５ａ～５ｂ的合成进行了探讨。初步生物活性测定表明少数化合物具有较好的植物生长调节活性和杀菌活性。     

华荠薴中的黄酮类化合物

从华荠（ＭｏｓｌａｃｈｉｎｅｎｓｉｓＭａｘｉｍ）中分离鉴定了６种黄酮类化合物，经光谱分析及化学方法鉴定为：５－羟基－６，７－甲基黄酮；５，７－二羟基－４＇－甲氧基黄酮；洋芹素；鼠李柠檬素；桑色素－７－Ｏ－β－Ｄ－葡萄糖甙；山奈素－３－Ｏ－β－Ｄ－葡萄糖甙．均为首次从该植物中分得．     

杂环偶氮苯甲酸类化合物作为分析试剂的研究──(IV)2-(4 5-二甲基噻唑偶氮)-5-二甲氨基苯甲酸与钯的显色反应

研究了Ｐｄ－ＤＭＴＡＭＢ－ＣＴＭＡＢ体系的显色条件及性质。在ｐＨ３～６时，形成稳定的配合物。λｍａｘ为６９５ｎｍ，对比度为１７５ｎｍ；ε＝６．６５×１０４，该显色体系不为ＥＤＴＡ所破坏，而其他金属离子的配合物会被ＥＤＴＡ所破坏而褪色，方法的选择性好。     

氢化均三嗪二酮双丙酸酯化物的合成

用ＤＭＡＰ－ＤＣＣ催化羧酸与醇（或酚）作用的方法合成了１６个未见献报道的氢化均三嗪二酮双丙酸酯化合物,并通过ＩＲ,＾１ＨＮＭＲ,ＭＳ确证结构。同时对ＤＭＡＰ－ＤＣＣ体系的催化机理进行了讨论。     

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     

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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