金叶子黄酮类成分的研究

金叶子叶经不同溶剂提取，浓缩及多次层析分离，纯化后从这植物中得到６个化合物。利用波谱和化学方法阐明其结构，计有１１α－羟基－α香树素，β－谷甾醇，槲皮素，槲皮素－３－Ｏ－α阿拉伯呋喃糖甙，槲皮素－３－Ｏ－α鼠李吡喃糖甙，槲皮素－３－Ｏ－β－半乳吡喃糖甙。     

巨枝大戟化学成分的研究

从巨大枝戟的全草中分离得到１０个化合物,分别鉴定为：１,２：５,６二－氧－异丙叉基－α－Ｄ－呋喃葡萄糖甙（１）,１,２：４,５－二氧－异丙叉基－β－Ｄ吡喃果糖甙 （２）,１,２氧－异丙叉基－α－Ｄ－呋喃葡萄糖（３）,１,２－氧化－异丙叉基－β－Ｄ吡喃果糖甙（４）,５－羟基甲基糖醛（５）,５－甲氧基甲基糖醛（６）,Ｄ－葡萄糖（７）,β－谷苗醇（８）,β－胡罗卜甙（９）,乔木萜醇（１０）,其中１－７为     

银杏叶中黄酮糖苷化合物的分离鉴定

利用常规的聚酰胺柱层析、ＴＬＣ和ＨＰＬＣ的方法从银杏叶中分离得到５个黄酮糖苷化合物，经ＵＶ、ＨＰＬＣ、ＨＮＭＲ分析鉴定为：芦丁（１），莰菲醇－３－Ｏ（２－Ｏ）－（６－Ｏ－「对－（β－Ｄ－葡萄糖）－Ｏ－反式肉桂酰」－β－Ｄ－葡萄糖）－α－Ｌ０鼠李糖）（２），莰菲醇－３－Ｏ（β－Ｄ－葡萄糖）（３），槲皮素－３－Ｏ－（２－Ｏ－「６－Ｏ－（对－竣工在－反式肉桂酰）－β－Ｄ－葡萄糖」－ａ－Ｌ－鼠李糖），（４     

川黄柏叶中黄酮成分的研究

利用柱层析和光谱分析方法研究川黄柏（ＰｈｅｌｌｏｄｅｎｄｒｏｎｃｈｉｎｅｎｓｅＳｃｈｎｅｉｄ）叶的黄酮类化合物,分离并鉴定了３个化合物（Ⅰ、Ⅱ、Ⅲ）．即槲皮素－３－０－β－Ｄ半乳糖甙（Ⅰ）,又名金丝桃甙（Ｈｙｐｅｒｏｓｉｄｅ）、双氢山奈酚（Ⅱ）（Ｄｉｈｙｄｒｏｋａｅｍｐｆｅｒｏｌ）和５’－异戊烯基双氢山奈酚－７－Ｏ－β－Ｄ葡萄糖（Ⅲ）,命名为黄柏新甙Ａ（ＰｈｅｌｌｏｃｈｉｎｉｎＡ）．其中Ⅲ是新化合物,Ⅱ是首次从本属植物中发现。     

荭草中的黄酮类化合物

从荭草（ Ｐｏｌｙｇｏｎｕｎ ｏｒｉｅｎｔａｌＬ） 中分离得到５ 个黄酮甙, 通过光谱技术并参考文献鉴定出其结构分别为： 槲皮素３ＯαＬ鼠李糖甙、槲皮素３ＯβＤ葡萄糖甙、芦丁、荭槲皮素７ＯαＬ鼠李糖甙、异鼠李素     

霸王鞭化学成分研究

采用硅胶柱色谱及HPLC等分离方法对新鲜霸王鞭的乙酸乙酯提取物进行分离纯化,得到8个单体化合物,通过1H NMR和13C NMR的方式鉴出其结构分别为蒲公英赛醇(1),大戟醇(2),木栓酮(3),乙酰表木栓醇(4),西米杜鹃醇(5),α-菠甾醇(6),山柰酚-3-O-α-L-鼠李糖甙(7),槲皮素-3-O-α-L-鼠李糖甙(8)。化合物4,5,7,8为首次从霸王鞭中分离得到。     

中国马先蒿环烯醚萜,木脂素和苯丙素甙成分研究

从中国马先蒿根部甲醇提取物的正丁醇浸豪中分离出５个甙类化合物，经ＩＲ，ＵＶ，＾ＨＮＭＲ，＾１３ＣＮＭＲ，ＤＥＰＴ，ＥＩＭＳ，ＦＡＢＭＳ以及化学转化鉴定它们为：６－Ｏ－甲基－构叶珊瑚甙（１），丁香醇－４″－β－Ｄ－葡萄糖吡喃甙（２），１＇－β－Ｄ０）３－羟基－４－甲氧基－苯基）－乙基β－Ｄ芹糖（１→３＇＿－α－Ｌ－鼠李糖（１－６＇）－４＇－反－阿魏酰基－葡萄糖吡喃甙（３），１＇－Ｏβ－Ｄ－（３－羟基     

黑叶菝葜中甾体皂甙成分研究

从黑叶菝葜根中首次分得５个甾体甙和１个酚甙，采用化学方法和光谱技术鉴定其结构分别为：熊果甙（Ⅰ），胡萝卜甙（Ⅱ），薯蓣皂甙元－３－Ｏ－［α－Ｌ－鼠李吡喃糖基（１－４）］－β－Ｄ－葡萄吡喃糖甙（Ⅲ），薯蓣皂甙元－３－Ｏ－［α－Ｌ－鼠李吡喃糖基（１－２）］－β－Ｄ－葡萄吡喃糖甙（Ⅳ），薯蓣皂甙（Ⅴ）和孕甾－５，１６－二烯－３β－醇－２０－酮－３－Ｏ－［α－Ｌ－鼠李吡喃糖基（１－２）］［α－Ｌ－鼠李吡喃     

华荠Ning中的黄酮类化合物

从华荠Ｎｉｎｇ中分离鉴定了６种黄酮类化合物，经光 主化学方法鉴定为：５－羟基－６，７－二甲基黄酮；５，７－二羟基－４－甲氧基黄酮；洋芹素；鼠李柠檬素；桑色素－７－０－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。     

从植物中录找农药活性物质（Ⅲ）：紫茎泽兰化学成分…

从菊科泽兰属植物紫茎泽兰茎中分到５个化合物，通过ＩＲ、ＭＳ、＾１ＨＮＭＲ，＾１３ＣＮＭＲ，＾１３ＣＮＭＲ－ＤＥＰＴ、元素分析等手段，单体分别鉴定为表木栓醇（１），豆甾醇（２），正二十八烷酸（３），β－胡罗卜甙（４），２－异丙烯基－５－乙酰基－６－羟基苯骈呋喃的乙酰化物（５），邻羟基桂皮酸（６），除豆甾醇外，其余的化合物都是首次在紫茎泽兰中发现。     

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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