大花旋覆花中的新倍半萜内酯

从大花旋覆花（ＩｎｕｌａｂｒｉｔａｎｎｉｃａＬ．ｖａｒ．ｃｈｉｎｅｎｓｉｓ）中分离得到了３个新倍半萜内酯化合物，应用波谱技术和化学方法确定了其结构。其中二乙酰基大花旋覆花内酯（１，６—Ｏ，Ｏ—ｄｉａｃｅｔｙｌｂｒｉｔａｎｎｉｌａｃｔｏｎｅ）显示有细胞毒活性。同时，从该植物中还得到了蒲公英醇、蒲公英醇乙酸酯、胡萝卜甙、肉豆蔻酸、棕榈酸和硬脂酸甘油酯。     

二茂铁基长链烷基β－二酮的合成及表征

通过乙酰基二茂铁与酯的缩合反应，合成了五个二茂铁基长链烷基β─二酮化合物ＦｃＣＯＣＨ＿２ＣＯＣ＿ｎＨ＿（２ｎ＋１）（Ｆｃ＝Ｃ＿５Ｈ＿５ＦｅＣ＿５Ｈ＿４，ｎ＝５～９）。用元素分析、ＵＶ─Ｖｉｓ、ＩＲ、１￣ＨＮＭＲ、ＭＳ对化合物进行了表征。测试结果表明，β─二酮化合物仅以烯醇形式存在。     

长纹海鞘(Ascidia longistriara)的化学成分研究

从长纹海鞘（Ａｓｃｉｄｉａｌｏｎｇｉｓｔｒｉａｒａ）的氯仿提取物中分离得到２个化合物，经ＩＲ，ＭＳ和ＮＭＲ等波谱方法鉴定，这２个化合物为胆甾７烯３β醇和神经酰胺十八碳酰基鞘氨醇     

江西庐山地块中生代构造事件和地质年代定时

ＴｈｅＬｕｓｈａｎｍａｓｓｉｆｃｏｎｓｉｓｔｓｏｆｔｗｏｍａｉｎｌｉｔｈｏ ｔｅｃｔｏｎｉｃｕｎｉｔｓｓｅｐａｒａｔｅｄｂｙｍａｊｏｒｔｅｃｔｏｎｉｃｃｏｎｔａｃｔ,ａｎＵｐｐｅｒＳｉｎｉａｎ Ｐａｌｅｏｚｏｉｃｕｎｉｔｍａｄｅｏｆｎｅａｒｌｙｕｎｍｅｔａｍｏｒｐｈｏｓｅｄｓａｎｄｓｔｏｎｅ ,ｅｘｃｅｐｔａｌｏｎｇｉｔｂａｓａｌｃｏｎｔａｃｔ,ａｎｄａＬｏｗｅｒＰｒｏｔｅｒｏｚｏｉｃｕｎｉｔｍａｉｎｌｙｍａｄｅｏｆｌｏｗ ｐｒｅｓｓｕｒｅｈｉｇｈ ｔｅｍｐｅｒａｔｕｒｅｇｎｅｉｓｓｅｓａｎｄｍｉｃａｓ…     

岩溶生态环境综合实验站的历史使命：贵州石山地区的治理开发和经济振兴

岩溶生态环境综合实验站的历史使命──贵州石山地区的治理开发和经济振兴ＴｒａｎｓｆｏｒｍａｔｉｏｎｏｆＳｔｏｎｅＭｏｕｎｔａｉｎＡｒｅａｉｎＧｕｉｚｈｏｕＰｒｏｖｉｎｃｅａｎｄＩｔｓＥｃｏｎｏｍｉｃＤｅｖｅｌｏｐｍｅｎｔ￥／／蒋九余（中国科学院地球化学...     

五味子化学成分研究（Ⅰ）

从云南民间药用植物中间五味子（Ｓｃｈｉｓａｎｄｒａｐｒｏｐｉｎｑｕａｖａｒｉｎｔｅｒｍｅｄｉａ）茎中，分离得到４个化合物，即环五味子烯醇（１）（Ｃｙｃｌｏｓｃｈｉｓａｎｄｒｅｎｏｌ１），Ｓｃｈｉｓａｎｄｒｏｎｉｃａｃｉｄ（２），Ｓｃｈｉｓａｎｄｒｏｌｉｃａｃｉｄ（３），β－谷田醇（β－ｓｉｔｏｓｔｅｒｏｌ）（４）其结构经由光谱分析确定。     

五味子化学成分研究（I）

从云南民间药用植物中间五味子（Ｓｃｈｉｓａｎｄｒａ ｐｒｏｐｉｎｑｕａ ｖａｒ ｉｎｔｅｒｍｅｄｉａ）茎中，分离得到４个化合物，即环五味子烯醇（１）（Ｃｙｌｏｓｃｈｉｓａｎｄｒｅｎｏｌ １），Ｓｃｈｉｓａｎｄｒｏｎｉｃ ａｃｉｄ（２），Ｓｃｈｉｓａｎｄｒｏｌｉｃ ａｃｉｄ（３），β－谷甾醇（β－ｓｉｔｏｓｔｅｒｏｌ）（４）。其结构经由光谱分析确定。     

Caulerpin的分离鉴定及生物活性

从海藻Ｃａｌｏｇｓｓａｌｅｐｒｉｅｕｒｉｉ，Ｌａｕｒｅｎｃｉａｍａｊｕｓｃｕｌａ，Ｈｙｐｎｅａｃｏｎｃｏｒｎｉｓ分离得ｃａｕｌｅｒｐｉｎ１，水解得化合物２．经波谱分析确证其结构．生物活性测定表明：ｃａｕｌｅｒｐｉｎ具有较强的植物生长作用．     

Calythropsin和Dihydrocalythropsin的合成

分别以２，４－二羟基苯乙酮和３，４－二羟基苯甲醛为起妈原料，经羟醛缩合，造择性氢化等步骤，完成了两个天然产物ｃａｌｙｔｈｒｏｐｓｉｎ和ｄｉｈｙｄｒｏｃａｌｙｔｈｒｏｐｓｉｎ的全合成。     

P204萃取Sc和Ti机理的研究

用分配比反应平衡常数直线斜率法测定出用二（２ 乙基已基） 磷酸（ 简称Ｐ２０４） 萃取Ｓｃ（ Ⅲ） ，Ｔｉ（ Ⅳ） 的萃取化合物的组成分别为ＳｃＡｓ ，ＨＡ 及ＴｉＡ４（ＨＡ 表示Ｐ２０４） ．用等摩尔系列法测定的结果进一步证实了斜率法测出的Ｓｃ 的萃取化合物组成的正确性．     

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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