冠醚聚合物研究：Ⅴ.聚苯乙烯支载的开链硫杂冠醚的合成及其络合 …

聚乙烯苄基烯丙基醚与氯乙醇和Ｎ－溴代丁二酰亚胺作用得到溴烷氧化产物，再与二巯基多甘醇通过大分子反应合成了６种开充杂冠醚聚合物。并测定了它们对Ａｇ（Ⅰ），Ａｕ（Ⅲ），Ｐｄ（Ⅱ），Ｐｔ（Ⅳ），Ｃｕ（Ⅱ），Ｈｇ（Ⅱ），Ｚｎ（Ⅱ），Ｍｇ（Ⅱ）和Ｋ（Ⅰ）等金属离子的络合性能。     

Sm/ZrCl4体系促进芳基二硒醚分子中Se-Se键的还原断裂反应

在THF介质中,温和的条件下,Sm/ZrCl4体系促进芳基二硒醚Se-Se键还原断裂,原位生成硒负离子,进而与酰氯、酸酐反应得到硒酯;与活性卤代烃、α-溴代酮、α-溴代酯反应,分别得到硒醚、α-硒代酮、α-硒代酯;与α,β不饱和酯（腈）、苯乙炔亲核加成反应,分别得到β-硒代酯（腈）和苯乙烯硒醚.提供了一种新的有机硒化合物的合成方法.产物结构经红外光谱、核磁共振谱、元素分析和质谱得到了证实.     

炔基硒醚的制备和(E)-α-溴代烯基硒醚的立体选择合成

乙基溴化镁与末端炔烃反应生成炔基Grignard试剂，后者与芳硒基溴作用较高产率地制得了炔基硒醚，通过炔基硒醚与溴化氢在苯中的加成反应，立体选择地合成了（E）－α-溴代烯基硒醚 。     

由聚苯乙烯负载烯基硒醚固相合成(E)-1,2-二取代乙烯

聚苯乙烯负载硒溴与炔基锂反应合成聚苯乙烯负载炔基硒醚，再与LiAIH4反应制得聚苯乙烯负载反式烯基硒醚；此负载型烯基硒醚在NiCl2(PPh3)2存在下与格氏试剂发生的偶联反应，提供了一种有效的（E）-1，2二取代乙烯的固相有机合成方法。     

一锅煮法合成1,10—二硒—18冠—6

一锅煮法合成１，１０－二硒－１８冠－６雷光东＊蒋青唐洪谢明贵＊＊（四川大学化学系）周本茂（中科院感光化学研究所）硒冠醚的合成和性质研究以及广泛应用前景，在文［１～４］中已有报道．Ｈｉｇｕｃｈｉ等人首先报道［１］：采用二溴代三甘醇和硒氰化钾反应生成中间...     

含溴黄浦江水臭氧化过程中溴酸根的生成

2010年1-6月的水质调查结果表明,黄浦江水中溴离子（Br^-）含量为204.9~394.6 μg/L.溴离子在臭氧氧化和氯消毒工艺中消耗显著,但在混凝工艺中变化很小.水厂溴酸根离子（BrO^-₃）检出率较低（7.5％）.经过生物活性炭（biological activated carbon,BAC）处理后的出水溴离子有一定增加,可能源于活性炭还原了经臭氧氧化形成的高价态溴.臭氧小试实验表明,当黄浦江原水中稳态溶解臭氧浓度大于0.23 mg/L时,溴酸根离子生成速率大幅度增加,但此后随着臭氧浓度的增加,溴酸根生成速度几乎不变.臭氧暴露值ct与BrO^-₃具有良好的线性关系,计算得到的溴酸根生成势k(μgBrO^-₃/(mgO₃·min))受水中稳态溶解臭氧浓度值影响较大.原水中高浓度的氨氮和有机物是抑制溴酸根离子在臭氧化过程中形成的主要因素.     

相转移催化下苄基醚用双媒质体系选择性间接电氧化的研究

研究了相转移催化剂（Bu4NHSO4）作用下苄基醚用双媒质Cr(Ⅲ）／Ag（Ⅰ）体系选择性间接电氧化，苄基醚氧化裂解生成脂肪醇和苯甲醛，0．01mol/LaAg（Ⅰ）能够使Cr（Ⅲ）氧化电流效率高，双媒质体系可以循环使用。     

应用聚合物支载的苄基硒醇制备酮

应用氯球（Ｐ○ＣＨ２Ｃｌ）与ＮａＨＳｅ反应，得到聚合物支载的苄基硒醇（Ｐ○ＣＨ２ＳｅＨ），用ＮａＢＨ４还原为Ｐ○ＣＨ２ＳｅＮａ后，与卤代物反应生成载体化的硒醚，经３０％Ｈ２Ｏ２氧化得到相应的酮     

几种重要的亚硒砜化合物及亚硒砜-碘酸盐类高选择性氧化剂的合成

在金属铋作用下 ,在 THF- H2 O介质中 ,由二硒醚与溴苄反应制得了苯基苄基硒醚和二苄基硒醚 .采用 CAN作氧化剂 ,在相转移催化条件下高产率地合成了具有重要价值的有机合成中间体苯苄亚硒砜和苄基亚硒砜 .然后与对甲苯磺酸作用得到了两种新型的高选择性氧化剂 BPS- TSA和 BS- TSA.该方法具有操作简便 ,原料易得 ,低毒性 ,高产率等优点 .     

聚合物负载的炔基硒醚试剂参与(Z)-1,2-二取代乙烯的固相有机合成

聚苯乙烯负载硒溴与炔基锂反应合成聚苯乙烯负载炔基硒醚，再与二环己基硼烷反应制得聚苯乙烯负载顺式烯基硒醚；此负载型烯基硒醚在NiCl2(PPh3)2存在下与格氏试剂发生偶联反应，提供了一种有效的(z)-1，2-二取代乙烯的固相有机合成方法，     

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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