双显色体系与Kalman滤波分光光度法用于多组分痕量元素分析

将卡尔曼滤波与双显色体系相结合提出了一种新的分光光度法。选用５－Ｂｒ－ＰＡＤＮ／吐温－８０（ｐＨ１０．０）及５－Ｂｒ－ＰＡＤＡＰ／ＣＰＢ（ｐＨ８．０）两体系进行显色反应，实现了铜锌钴镍镉的同时测定，双显色体系结果优于单独使用。将本法用于合成试样及水，发，指甲等环境样品分析，效果良好，操作简便。     

锌在PAN修饰的铅笔芯电极上的差分脉冲阳极溶出伏安特性

用１－（２－吡啶偶氮）－２－萘酚（ＰＡＮ）修饰铅笔芯电极研究锌的差分脉冲阳极溶出伏安特性。测得锌在ＰＡＮ修饰的铅笔芯电极（ＰＣＰＥ）上,于－０．９２Ｖ处有良好的溶出峰。峰电流ｉｐ与锌离子浓度在４．０×１０－７～４．０×１０－５ｍｏｌ·Ｌ－１范围内呈良好的线性关系。用以测定植物中的微量锌,与原子吸收法测定结果基本一致。并初步探讨了该修饰电极对锌的富集和溶出机理     

电镀液和电镀层中铜和锰的联合测定

当ｐＨ＝１０时,铜和锰都能与ＰＡＲ生成稳定的红色络合物;当ｐＨ＝７时,锰与ＰＡＲ几乎不络合,而铜与ＰＡＲ则可以稳定络合．利用这种差异,可以在ｐＨ＝１０的介质中测定铜和锰的合量,而在ｐＨ＝７的介质中测定铜的量,再由两者之差求得锰的含量．试验表明,ｐＨ＝１０．０时,εＣｕ－ＰＡＲ４９８．５＝４．６６×１０４Ｌ／ｍｏｌ·ｃｍ;εＭｎ－ＰＡＲ４９８．５＝８．００×１０４Ｌ／ｍｏｌ·ｃｍ;ｐＨ＝７．０时,εＣｕ－ＰＡＲ４９８．５＝４．２６×１０４Ｌ／ｍｏｌ·ｃｍ．相对标准偏差小于３％,回收率为９５％～１０１％．其方法适用于电镀液和电镀层中Ｃｕ和Ｍｎ的测定     

在阴离子表面活性剂存在下3,5-diCl-DMPAP分光光度法测定微量锌

在阴离子表面活性剂ＳＬＳ存在下，研究了２－（３，５－二氯－２－吡啶偶氮）－５－二甲氨基酚（简称３，５－ｄｉＣｌ－ＤＭＰＡＰ）与锌反应的适宜显色条件．结果表明，在ｐＨ为６．０～１０．０范围内，锌（Ⅱ）与试剂形成１∶２的紫红色配合物．配合物的最大吸收波长位于５６５ｎｍ处，表观摩尔吸光系数为１．２×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，锌浓度在０～６．０μｇ／１０ｍＬ范围内遵守比尔定律．方法已用于地质化探样品和镁合金中微量锌的测定     

3,5-二溴水杨醛缩4-氨基安替比林与铜的荧光猝灭反应及其应用

研究了新荧光试剂３ ,５ － 二溴水杨醛缩４ － 氨基安替比林（ 简称：３ ,５ － ＤＢＳＡＡＰ） 与铜的荧光猝灭反应体系的最适宜的条件。３ ,５ － ＤＢＳＡＡＰ 发射强的荧光,λｅｘ／ｅｍ ＝ ３９３ｎｍ／５１０ｎｍ 。在ｐＨ９ ．０ 的ＮＨ３ － ＮＨ４Ｃｌ 缓冲介质中,Ｃｕ（ Ⅱ） 与３ ,５ － ＤＢＳＡＡＰ在室温反应使其荧光猝灭。据此建立了铜的分析方法,线性范围为１ ．６ ×１０ － ５ ｍｏｌ／Ｌ～１ ．２ ×１０ － ７ ｍｏｌ／Ｌ。用于测定人发中的铜,结果满意。     

几种芳烃衍生物型捕收剂的液相色谱分离和测定

报道了一种反相ＨＰＬＣ方法对几种芳烃衍生物型捕收剂的分离和测定．该法借助色谱柱ＬｉＣｈｒｏＣＡＲＴ１００ＲＰ１８（５μｍ）,流动相：甲醇－水－５％Ｈ３ＰＯ４－５％Ｈ２ＳＯ４（４５∶５５∶４∶０．５,体积分数）和紫外检测器在２８５ｎｍ波长下进行．在０．０００５～０．０１ｇ／Ｌ浓度范围内,方法的相对标准偏差为１．１％～２．４％．水杨羟肟,苯并三唑,水杨醛肟,水杨酸,铜铁灵等的检出限分别为１．０×１０－６,０．２×１０－６,１．０×１０－６,５．０×１０－６和６．０×１０－６ｇ／Ｌ,所研制的方法已应用于矿物浮选过程实际样品的分析．     

Cu(Ⅱ)-3,5-diCl-DMPAP-OP显色反应及其应用

研究了在非离子表面活性剂ＯＰ存在下,２－（３,５－二氯－２－吡啶偶氮）－５－二甲氨基苯酚（３,５－ｄｉＣｌ－ＤＭＰＡＰ）与铜（Ⅱ）的显色反应．实验表明,在ｐＨ值为７．５～１０．０的硼砂缓冲介质中,铜与试剂形成１∶２稳定的红色配合物,其表观摩尔吸光系数ε５５８＝９．７×１０４Ｌ·ｍｏｌ－１·ｃｍ－１,铜浓度在０～６．５μｇ／１０ｍＬ范围内符合比尔定律．在柠檬酸三钠和丁二酮肟的存在下,可直接用于铝合金和纯铝中的微量铜的测定     

淀粉—KI体系光度法测定微量铜（Ⅱ）的研究

本文利用碘与淀粉的高灵敏显色反应，建立了光度法测定微量铜的新分析方法。该法简单易行，灵敏准确．Ｃｕ２＋离子浓度在１．０×１０－６～６．０×１０－５ｍｏｌ．Ｌ－１区间符合比耳定律，检测限为５×１０－７ｍｏｌ．Ｌ－１。对水样中微量铜的测定．回收率在９８．２％～９９．６％之间变化，ＲＳＤ为２．２％和２．５％。     

Mn（Ⅱ）—OP—5—Br—PADAP分光光度法研究

研究了在ｐＨ９．４的硼砂介质中，Ｍｎ（Ⅱ）－ＯＰ－５－Ｂｒ－ＰＡＤＡＰ红色络合物形成的适宜条件和络合物的稳定性等．锰含量在（０～１）ｍｇ／Ｌ范围内服从Ｂｅｅｒ定律．其回归方程为：Ａ＝０．０５９９２Ｃ＋３．４×１０－２，（ｒ＝０．９９８６）．摩尔吸光系数ε＝１．０６×１０５．测定６次相对偏差小于３．０％．加标回收率在９６％～９８％．该法用于茶叶中锰的测定，结果令人满意．     

钌(Ⅲ)-KIO_4(或KBrO_3)-3,5-Br_2-PADAP体系催化光度法测定微量钌

首次报道了硫酸介质中微量钌（Ⅲ）对ＫＩＯ４（或ＫＢｒＯ３）氧化２－［（３，５－二溴－２－吡啶）－偶氮－５－二乙氨基苯酚（３，５－Ｂｒ２－ＰＡＤＡＰ）褪色具有显著的催化作用，并以此反应为指示反应建立了测定微量钌的催化光度法．在Ｒｕ（Ⅲ）－ＫＩＯ４－３，５－Ｂｒ２－ＰＡＤＡＰ体系中，钌（Ⅲ）含量在０．０８０～０．３００μｇ／１０．０ｍｌ范围内符合比耳定律；在Ｒｕ（Ⅲ）－ＫＢｒＯ３－３，５－Ｂｒ２－ＰＡＤＡＰ体系中，钌（Ⅲ）含量在０．０５０～０．３０μｇ／１０．０ｍｌ范围内符合比耳定律．这两种方法具有灵敏度高、选择性好、操作简单等特点并已用于实际样品中微量钌的测定，结果令人满意．     

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