Fe—TPPS3配合物电化学研究（Ⅱ）

用吸收光谱法和单扫描极谱法研究了Ｆｅ＾２＋与三磺基四苯基卟啉水溶性配合物在５．２〈ｐＨ〈５．９的ＨＡｃ－ＮａＡｃ底物中的性质。实验表明Ｆｅ＾２＋与ＴＰＰＳ３在该介质条件下，９０℃加热１５ｍｉｎ即可反应完全，确定了产物的组成比为１：１，Ｈ＾＋参与了这种电活性配合物的电极反应，ｐＨ对电活物性质的还原峰电流和峰电位影响明显；在ＴＰＰＳ３过量情况下，还原峰电流与Ｆｅ＾２＋的浓度成正比，可作为一种测定２铁的     

FeⅡ-TPPS_3配合物光谱电化学研究

用吸收光谱、单扫描极谱及光谱电化学方法研究Ｆｅ２＋三磺基四苯基卟啉（简写为ＴＰＰＳ３）的水溶性配合物在ｐＨ～４．０的ＨＡｃ－ＮａＡｃ缓冲体系中的性质。实验证明Ｆｅ２＋与ＴＰＰＳ３在９０℃下加热８０ｍｉｎ可以反应完全,配合物主要以ＴＰＰＳ３二聚体和ＴｅⅢ－ＴＰＰＳ３单体的形态存在于该介质中,Ｈ＋参与了配合物的电极反应,Ｆｅ－ＴＰＰＳ３体系中配合物的组成比为１∶１,ＦｅⅢ－ＴＰＰＳ３在电极上还原为ＦｅⅡ－ＴＰＰＳ２为不可逆过程。     

Fe（Ⅲ）—TPPS3配合物光谱电化学研究

用吸收光谱，单扫描极谱及光谱电化学方法研究了Ｆｅ６２＋三磺基四苯基卟啉的水溶性配合物在ｐＨ－４．０的ＨＡｃ－ＮａＡｃ缓冲体系中的性质。实验证明Ｆｅ＾２＋与ＴＰＰＳ３在９０℃下加热８０ｍｉｎ可以反应完全，配合物主要以ＴＰＰＳ３二聚体和Ｔｅ－ＴＰＰＳ３单体的开矿存在于该介质中，Ｈ＾＝参与了配合物的电极反应，Ｆｅ－ＴＰＰＳ３体系中配合物的组成比为１：１，Ｆｅ－ＴＰＰＳ３在电极上不原为Ｆｅ－ＴＰＰＳ２为可     

肌红蛋白在光透铟杂二氧化锡电极上的电化学行为

在表面活性剂溴化十六烷基三甲基铵的ｐＨ５．０的ＨＡｃ－ＮａＡｃ缓冲溶液中,在光透ＳｎＯ２电极上肌红蛋白有一灵敏的还原峰,该峰与肌红蛋白的浓度有关,该法可测至低达１０－９ｍｏｌ／Ｌ的肌红蛋白,机理研究表明,肌红蛋白有这一还原峰是肌红蛋白分子中结合氧的还原峰而不是肌红蛋白分子中Ｆｅ（Ⅲ）Ｆｅ（Ⅱ）电对的氧化还原峰     

稀土硝酸盐与15冠5在有机溶剂中配位反应的电导研究

用电导法研究了在２５℃时几种稀土硝酸盐与１５冠５在（ＣＨ３）２ＣＯ、ＣＨ３ＣＮ、ＣＨ３ＯＨ及ＤＭＦ中的配位反应，计算了１：１配合物的稳定常数和摩尔电导率．结果表明，在溶剂（ＣＨ３）２ＣＯ、ＣＨ３ＣＮ、ＣＨ３ＯＨ和ＤＭＦ中，稀土和１５冠５配合物的稳定常数大小分别为Ｎｄ３＋＜Ｅｕ３＋＜Ｙ３＋，Ｅｕ３＋＞Ｇｄ３＋＞Ｙ３＋＞Ｄｙ３＋＞Ｔｂ３＋，Ｅｕ３＋＜Ｇｄ３＋＜Ｙ３＋和Ｎｄ３＋＜Ｇｄ３＋，在这几种无水溶剂中，同一稀土冠醚配合物的ＡＭＬ（ＮＯ３）３值大小顺序为：ＤＭＦ＞ＣＨ３ＯＨ＞ＣＨ３ＣＮ＞（ＣＨ３）２ＣＯ．     

磺基苯基卟啉金属配合物氧化还原催化性能的比较

用循环伏安法和旋转环盘电极技术研究中位－四－磺基苯基卟啉的铁、锰配合物（ＦｅＴＰＰＳ和ＭｎＴＰＰＳ）的氧化还原性能．比较均相溶液中它们对氧电还原的催化作用,发现ＦｅＴＰＰＳ的电催化活性优于ＭｎＴＰＰＳ,但尚依赖于溶液介质的性质．用电聚合方法将ＦｅＴＰＰＳ和ＭｎＴＰＰＳ分别嵌入聚吡咯中制成聚合物修饰电极,可改善电催化性能,不仅使氧还原电位正移,而且增大还原电流．讨论了聚合物修饰电极对氧还原的可能影响．     

流动注射化学发光法测定还原型辅酶Ⅰ

将还原型辅酶Ⅰ（ＮＡＤＨ）还原Ｆｅ３＋生成Ｆｅ２＋的化学反应与Ｆｅ２＋催化溶解氧氧化Ｌｕｍｉｎｏｌ的化学发光反应相偶合,同时采用试剂固定化技术将体系中的分析试剂Ｆｅ３＋及Ｌｕｍｉｎｏｌ全部电价固定在离子交换柱中,建立了一种测定还原型辅酶Ⅰ的流动注射化学发光新方法．该法对于ＮＡＤＨ响应的线性范围为１．０×１０－７～１．０×１０－４ｍｏｌ／Ｌ,检出限为５．５×１０－８ｍｏｌ／Ｌ,相对标准偏差小于５％（１．０×１０－７ｍｏｌ／Ｌ,ｎ＝７）．     

从水蜡果实中提取红色素的研究

以水蜡果实为原料，用ｐＨ＝１的ＨＣｌ－Ｈ２Ｏ溶液常温下浸泡４ｈ，经抽滤、浓缩得到紫红色色素。该色素用硅胶柱，以乙酸乙酯－丙酮（２∶１）作流动相可初步得到提纯，最高得率可达２２．３％（以干果重计）。该色素易溶于水、乙醇等溶剂，对热稳定，对光较稳定，遇氧化剂、还原剂均不稳定，能与Ｆｅ３＋和Ａｌ３＋发生颜色反应。色素水溶液在ｐＨ＜５时呈紫红色，有明显吸收峰，ｐＨ＞５时呈蓝色     

交流示波极谱滴定测定水泥中的Fe_2O_3和Al_2O_3

研究了在ｐＨ＝４．３的ＨＡｃ—ＮａＡｃ缓冲溶液中，用ＥＤＴＡ滴定水泥熟料中的Ｆｅ３＋，并以Ｚｎ２＋的切口消失来指示终点，对Ｆｅ３＋进行测定，以及在测定了Ｆｅ３＋的溶液中用Ｚｎ２＋标液返滴定到出现Ｚｎ２＋切口指示终点来测定Ａｌ３＋的交流示波极谱连续测定Ｆｅ３＋和Ａｌ３＋的新方法。关键词     

Fe（Ⅱ）离子对γ—FeOOH相转化为α—Fe2O3的影响

研究了ＦｅＳＯ４浓度及ｐＨ值（４～８）对γＦｅＯＯＨ在（９９±１）℃下相转化为αＦｅ２Ｏ３的影响．结果表明，Ｆｅ（Ⅱ）／Ｆｅ（Ⅲ）为３％～５％及ｐＨ值为近中性时相转化时间最短．指出Ｆｅ（Ⅱ）离子对γＦｅＯＯＨ的促进作用为ＦｅＯＨ＋吸附在γＦｅＯＯＨ表面使其溶解造成的．     

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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