Pb（Ⅱ）－Cup络合物导数极谱波研究

在ＰＨ为５～６的ＨＡｃ－六次甲基四胺溶液中，Ｐｂ（Ⅱ）与铜铁试剂产生的络合物在单扫描示波极谱仪上可观察到一灵敏的导数极谱波，其峰电位为－０．６４Ｖ（ＶＳ，ＳＣＥ），峰电流与铅浓度在９．６×１０－８～５．８×１０－６ｍｏｌ·Ｌ－１范围内成线性关系，检测限为１．９×１０－６ｍｏｌ·Ｌ－１，用以测定铅锌矿中铅的结果良好．同时研究了形成铅－铜铁试剂络合物吸附波的条件和性质，并用极谱法测定其络合比为１：１．     

用邻硝基苯基荧光酮和溴化十六浣基三甲基铵分光光度法测定微…

在ｐＨ为６．３的六次甲基四胺－盐酸介质中，铜（Ⅱ）－Ｏ－ＮＰＦ－ＣＴＭＡＢ络合物的最大吸收波长为５９５ｎｍ，摩尔吸光系数值ε为１．２５×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１。铜浓度在０－７μｇ／２５ｍｌ８范围内服从比耳定律，用本法测定了铝合金和天然水中微量铜。     

邻菲啰啉氮氧化物－铜（Ⅱ）－过氧化氢化学发光体系的研究

本文研究了邻菲罗啉氮氧化物－铜（Ⅱ）－过氧化氢化学发光体系的最佳反应条件，拟定了新的化学发光测定痕量铜的方法。本方法检出限为７．９×１０￣（－９）ｍｏｌ／Ｌ，线性响应的浓度范围为１．６×１０￣（－８）～１．６×１０￣（－６）ｍｏｌ／Ｌ。考察了共存离子的干扰情况，用于铜精矿、茶叶及发样中铜的测定获得满意结果。本文还探讨了该体系化学发光的可能机理。     

催化分光光度法测定痕量铜(Ⅱ)的研究

在稀氨水溶液中,以ＫＣｌ溶液为活化剂,过氧化氢与溴甲酚紫的氧化还原反应多铜（Ⅱ）催化,而使吸光度值降低,据此建立了痕量铜的新催化动力学光度法。方法的摩尔吸光系数为５２８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,检出限为４４４×１０－９ｇ／ｍＬ,线性范围为０～０６μｇ／２５ｍＬ,已用于桂林风景点水中痕量铜（Ⅱ）的测定,结果满意。     

萃取催化动力学光度法测定痕量铜

在ｐＨ＝９．８的氨性缓冲溶液中,痕量Ｃｕ（Ⅱ）对Ｈ２Ｏ２氧化邻氨基酚的显色反应有催化作用,用萃取平衡控制反应时间和水相中邻氨基酸的浓度及反应程度．研究了反应的最优条件,建立了测定痕量铜的新方法。方法的线性范围为０．５—２０μｇ·Ｌ（－１）,检测限为２．２×１０（－７）ｇ·Ｌ（－１）。用本法测定了水及食品中的痕量铜,结果满意。     

Ti（Ⅳ）－N－苯甲酰苯胲络合吸附波的研究

在ｐＨ４．５的５０ｍｍｏｌ·Ｌ~（－１）ＮａＡｃ－５０ｍｍｏｌ·Ｌ~（－１）ＮａＡｃ－０．４ｍｍｏｌ·Ｌ~（－１）Ｎ－苯甲酰苯胲（Ｎ－ＢＰＨＡ）底液中，用单扫示波极谱法可得到Ｔｉ（Ⅳ）的络合物吸附波，峰电位－０．６２Ｖ（ｖｓ．ＳＣＥ）左右。导数峰高与钛的浓度在４．２×１０~（－６）～２．０×１０~（－４）ｍｍｏｌ·Ｌ~（－１）的范围内呈线性关系，检出限为２．０×１０~（－６）ｍｍｏｌ·Ｌ~（－１）。实验表明，该极谱峰属于络合吸附波，测定其络合比为ｎ（Ｔｉ（Ⅳ））：ｎ（Ｎ－ＢＰＨＡ）＝１：３。该法应用于中成药“升板胶”中微量钛的测定。     

新显色剂6—Me—BTAEB的酸碱平衡及其与镍（Ⅱ）显色反应的研究

该文研究了新显色剂２－［２－（６－甲基苯并塞唑）偶氮］－５－二乙氨基苯甲酸（６－Ｍｅ－ＢＴＡＥＢ）的酸碱平衡及其与镍（Ⅱ）的显色反应。实验结果表明,在十二烷基硫酸钠（ＳＤＳ）存在下,６－Ｍｅ－ＢＴＡＥＢ与镍（Ⅱ）在ｐＨ４．５～８．３缓冲溶液中形成稳定的蓝紫色络合物,其组成为Ｎｉ（Ⅱ）∶６－Ｍｅ－ＢＴＡＥＢ＝１∶２,最大吸收波长为６５０ｎｍ,表现摩尔吸光系数为１．６７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１镍（Ⅱ）浓度在０～１０μｍ／２５ｍｌ范围内服从比尔定律。方法可直接用于铝合金中微量镍的测定,结果满意。     

芦荟甙的伏安行为及其应用研究

芦荟甙在０．０５ｍｏｌ·Ｌ＾－１硫酸溶液中出现一灵敏的吸附伏安峰,峰电位为０．２３Ｖ（ｖｓ．Ａｇ／Ｃｌ）。峰电流与芦荟甙的浓度在２．０×１０＾－８～４．０×１０＾－７ｍｏｌ·Ｌ＾－１和４．０×１０＾－７～６．０×１０＾－６ｍｏｌ·Ｌ＾－１范围内成线性关系,检出限为５．０×１０＾－９ｍｏｌ·Ｌ＾－１（富集时间为１５０ｓ）。用线性扫描和循环估安法研究了体系的电化学行为,并应用于芦荟原胶中芦荟甙的的测定     

维脉宁的示波极谱测定与电化学行为研究

在ＮａｏＨ底液中，维脉宁（ＲＴ）在汞电极上有一灵敏的导数还原峰，峰电位（ｖｓ．ＳＣＥ）为－０．７１Ｖ。导数峰电流与ＲＴ浓度在６×１０－８～１６×１０－６ｍｏＬ·Ｌ－１范围内成正比（ｒ＝０．９９９９），最低检测限为１×１０－８ｍｏｌ·Ｌ－１．用该方法测定尿样中微量ＲＴ，结果满意。对ＲＴ在汞电极上的电化学行为进行了探讨。     

锌试剂显色树脂相分光光度法测定微量铜（II）

用锌试剂显色在ｐＨ５．０￣９．５条件下，铜（Ⅱ）与锌试剂生成绿色配合物与７１７型强碱性阴树脂交换吸附，进行树脂相分光光度法测定微量铜（Ⅱ），λｍａｘ为６４０ｎｍ，铜（Ⅱ）在０￣０．５ｍｇ／ｌ范围符合Ｂｅｅｒ定律，表观摩尔吸光系数ε为２．１６×１０＾－５ｌ·ｍｏｌ＾－１·ｃｍ＾－１，比水相（ε＝１．９×１０＾４ｌ·ｍｏｌ＾－１·ｃｍ＾－１）提高１１倍。用此法测定天然水中铜（Ⅱ）和钢样中微量铜（Ⅱ）得     

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