四乙基溴化铵对离子型表面活性剂胶束化行为的影响

用表面张力方法研究了有机电解质四乙基溴化铵（（Ｅｔ）４ＮＢ）对离子型表面活性剂ＳＤＳ和ＤＴＡＢ胶束化行为的影响,并与无机电解质ＮａＢｒ的结果比较．实验结果表明,（Ｅｔ）４ＮＢ促进ＳＤＳ胶束化的能力强于ＮａＢｒ;但促进ＤＴＡＢ胶束化的能力与ＮａＢｒ基本一样．这说明：（Ｅｔ）４Ｎ＋与ＳＤＳ胶束间除了相反电荷静电吸引外,其乙基和表面活性剂碳氢链间还具有弱疏水相互作用,两者结合使（Ｅｔ）４Ｎ＋嵌入ＳＤＳ胶束离子头基中;这种疏水作用强度不及静电力,在静电排斥下,（Ｅｔ）４Ｎ＋乙基和ＤＴＡ＋碳氢链间疏水相互作用未能发生．     

禾黑芽枝霉诱变体果胶酶的化学修饰

用乙基碳化亚二胺（ＥＤＣ）、二乙基焦碳酸（ＤＥＰＣ）、磷酸吡哆醛（ＰＬＰ）、过氧化氢（Ｈ２Ｏ２）、三硝基苯磺酸（ＴＮＢＳ）、对氯汞苯甲酸（ＰＣＭＢ）、Ｎ－经琥珀酰亚胺（ＮＢＳ）、碘乙酸（ＩＡＣ）和二硫基二硝基苯甲酸（ＤＴＮＢ）分别对禾黑 霉本的三种果胶裂解酶（ＰⅠ，ＰⅡ，ＰⅢ）进行了化学修饰，紫外可见光谱的实验结果证明，各种试剂都与果胶酶氨基酸特定残基共价结合，大多数氨基酸残基的化学修饰对果胶酶的     

鱼中高温激活蛋白酶的提取纯化

以市售鱼为原料，进行其高温激活蛋白酶（ＨＴＡＰ）的提取纯化通过抽提、高速离心分离、ＤＥＡＥ－ＴＯＹＯＰＥＡＲＬ６５０Ｍ离子交换色谱、ＳＥＰＨＡＣＲＹＬＳ２００凝胶过滤等方法，把ＨＴＡＰ从鱼中分离提取出来运用ＳＤＳ－聚丙烯酰胺凝胶电泳（ＳＤＳ－ＰＡＧＥ）法对分离提纯的ＨＴＡＰ纯度进行鉴定，并通过此法测出了该ＨＴＡＰ的分子量为３９０００     

可聚合性季铵盐及其聚合物的合成与表征

合成了三种含不饱和双键和季铵盐：甲基丙烯酰氧乙基－苄基－二甲氯化铵（ＭＢ－ＤＡＣ）,甲基丙烯酰氧乙基－丁基－二甲基溴化铵（ＭＢＤＡＢ）和甲基丙烯酰氧乙基－乙基－二甲基溴化铵（ＭＥＤＡＢ）,用红外光谱,元素分析,核磁共振谱对其结构进行了表征。用自由基聚合法合成了ＭＢＤＡＣ的均聚物及其与甲基丙烯酸甲酯和苯乙烯的共聚物,并用元素分析、ＧＰＣ,红外光谱等表征了聚合物的结构,用ＤＳＣ和ＴＧ研究了其热稳定性,     

浅论高校教师业务档案的建立与管理

浅论高校教师业务档案的建立与管理童晓风（浙江水产学院院长办公室，舟山３１６１０１）ＯＮＥＳＴＡＢＬＩＳＨＭＥＮＴＡＮＤＭＡＮＡＧＥＭＥＮＴＯＦＥＤＵＣＡＴＩＯＮＡＬＤＯＣＵＭＥＮＴＳＦＯＲＣＯＬＬＥＧＥＴＥＡＣＨＥＲＳＴｏｎｇＸｉａｏｆｅｎｇ（ＺｈＥ...     

THE RISE AND DECLINE OF THE UNITED STATES SHIPPING AND SHIPBUILDING INDUSTRIES

ＴＨＥＲＩＳＥＡＮＤＤＥＣＬＩＮＥＯＦＴＨＥＵＮＩＴＥＤＳＴＡＴＥＳＳＨＩＰＰＩＮＧＡＮＤＳＨＩＰＢＵＩＬＤＩＮＧＩＮＤＵＳＴＲＩＥＳ￥（ＣａｐｔａｉｎＪａｍｅｓＳ．Ｃ．Ｃｈａｏ，ＤＣＳ，ＬＬ．Ｄ．ＪｏｈｎＪ．Ｃｌａｒｋ，Ｐｈ．Ｄ．）Ａｂｓｔｒａｃｔ...     

测定锡青铜中锡的快速络合滴定法

在较强的酸性介质中加入硫脲将大量Ｃｕ２＋ 掩蔽，然后加过量ＥＤＴＡ加热使Ｓｎ４ ＋ 定量络合用六次甲基四胺调整酸度至ｐＨ＝５５ ，以二甲酚橙做指示剂用硝酸铅溶液滴定过量的ＥＤＴＡ，然后加氟化钠将Ｓｎ－ ＥＤＴＡ中的ＥＤＴＡ 析出，再用硝酸铅溶液滴定此析出的ＥＤＴＡ以计算锡的含量     

漳泽水库的绿藻植物

漳泽水库的绿藻植物谢树莲张瑜娥＊李晓红＊（山西大学生命科学系，太原０３０００６）ＣＨＬＯＲＯＰＨＹＴＡＯＦＴＨＥＺＨＡＮＧＺＥＲＥＳＥＲＶＯＩＲＸｉｅＳｈｕｌｉａｎＺｈａｎｇＹｕｅＬｉＸｉａｏｈｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＬｉｆｅＳｃｉｅｎｃｅ，...     

生命金属寡核苷酸螯合物的制备及反应机理

制备了５′端共价连接ＥＤＴＡ的寡聚核苷酸与生命金属的螯合物ＯＤＮ－５′－ＥＤＴＡＭ（ｎ＋），其中Ｍ（ｎ＋）为Ｆｅ（Ⅱ），Ｃｏ（Ⅱ）或Ｃｕ（Ⅱ）；分析、计算了这３个螯合物形成的最佳ｐＨ值范围，ＯＤＮ－ＥＤＴＡＦｅ（Ⅱ）为ｐＨ５．８～８．６，ＯＤＮ－ＥＤＴＡＣｏ（Ⅱ）为ＰＨ４．６～８．１，ＯＤＮ－ＥＤＴＡＣｕ（Ⅱ）为ｐＨ３．４～５．７；在此条件下，剪切反应必须的Ｍｇ２＋并不与Ｆｅ（Ⅱ），Ｃｏ（Ⅱ）或Ｃｕ（Ⅱ）竞争ＥＤＴＡ，也不会形成沉淀；讨论了ＯＤＮ－ＥＤＴＡＭ（ｎ＋）切割ＤＮＡ双链的反应机理：修饰寡核苷酸通过氢键在ＤＮＡ双链的大沟结合形成三链体，在Ｏ２和还原剂ＤＴＴ作用下，Ｆｅ作为催化剂，产生羟基自由基，氧化糖环，切割ＥＤＴＡＦｅ（Ⅱ）附近的ＤＮＡ双链．     

溴化苄对二乙基胺甲基膦酸锆的季铵化及三相催化反应

首次制得二乙基胺甲基膦酸锆－亚磷酸锆Ｚｒ（ＨＰＯ＿３）＿（２－ｘ）·（Ｏ＿３ＰＣＨ＿２ＮＥｔ＿２）＿ｘ·Ｈ＿２Ｏ（ＺＤＥＡＭＰ－ＺＰ，ｘ＝０．７５，０．６０，０．５０）．将ＺＤＥＡＭＰ－ＺＰ用溴化苄季铵化，得到部分季铵化的产物：溴化苄基二乙基铵甲基膦酸锆－二乙基胺甲基膦酸锆－业磷酸锆Ｚｒ（ＨＰＯ＿３）＿（２－ｘ）·（Ｏ＿３ＰＣＨ＿２ＮＥｔ＿２）＿（ｘ－ｙ）·（Ｏ＿３ＰＣＨ＿２Ｎ￣＋Ｅｔ＿２·ＣＨ＿２Ｐｈ·Ｂｒ￣－）＿ｙ·Ｈ＿２Ｏ（Ｙ＜Ｘ，ＺＢＤＥＡＭＰＢ－ＺＤＥＡＭＰ－ＺＰ）．ＺＢＤＥＡＭＰＢ－ＺＤＥＡＭＰ－ＺＰ用于进行液／固／液或固固／液三相催化的亲核取代成醚、卤代烃和羧酸盐合成酯及二氯卡宾加成反应，均得到良好的结果。催化剂易于分离和回收，通常回收７０％～１００％，催化剂重复使用１０次以上无明显失活。     

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     

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