异烟肼-次氯酸钠-鲁米诺化学发光反应的研究

利用异烟肼可增强次氯酸钠－鲁米诺体系的化学发光,结合流动注射技术,建立了一种新的异烟肼的流动注射化学发光分析方法．异烟肼在８．０×１０－６～１．０×１０－８ｇ／ｍＬ浓度范围内与化学发光信号强度呈线性关系．检出限为１．７×１０－９ｇ／ｍＬ．ＲＳＤ为１．９％（ｎ＝１１,ｃｓ＝５×１０－７ｇ／ｍＬ）．     

高锰酸钾-甲醛-C_2O_4~(2-)化学发光体系的研究

在甲醛存在下,高锰酸钾与Ｃ２Ｏ２－４能够发生化学发光反应,产生很强的化学发光,由此建立了一种测定Ｃ２Ｏ２－４的流动注射化学发光分析法．方法的检出限为４．５×１０－８ｇ／ｍＬ,相对标准偏差为１．３％（１．０×１０－６ｇ／ｍＬＣ２Ｏ２－４,ｎ＝１１）,线性范围为１．０×１０－７～１．０×１０－５ｇ／ｍＬＣ２Ｏ２－４．该法已用于尿样中Ｃ２Ｏ２－４的测定．     

L—酪氨酸—高锰酸钾—过氧化氢流动注射化学发光体系的研究

采用流动注射技术研究了Ｌ－酪氨酸－高锰酸钾－过氧化氢体系的化学发光行为，对影响化学发光强度的诸因素进行了实验和探讨．建立了化学发光法测定Ｌ－酪氨酸的新方法．方法的检出限为３．８×１０－７ｇ／ｍＬ，线性范围为１．０×１０－６～１．０×１０－４ｇ／ｍＬ．对合成试样中的三种浓度的Ｌ－酪氨酸测定的回收率在９７％～１０５％之间，相对标准偏差小于３％．     

无机还原剂铀（Ⅲ）──光泽精化学发光反应的研究

利用流动注射技术研究了由Ｊｏｎｅｓ柱产生的铀（Ⅲ）与光泽精的化学发光反应．建立了痕量铀的流动注射化学发光分析法，方法的检出限为２×１０－１０ｇ／ｍＬ铀，线性范围为１×１０－９～１×１０－５ｇ／ｍＬ铀，相对标准偏差为１．０％（１×１０－７ｇ／ｍＬ铀，ｎ＝１１）．此法已用于合成海水中痕量铀的测定．同时对于反应机理也进行了研究．     

L-色氨酸-高锰酸钾-H~ 化学发光反应的研究

在酸性条件下，高锰酸钾能直接氧化Ｌ－色氨酸并产生较强的化学发光信号，发光信号的强度与Ｌ－色氨酸浓度在一定范围内成线性，由此建立了Ｌ－色氨酸－高锰酸钾－Ｈ＋化学发光体系测定Ｌ－色氨酸的流动注射化学发光新方法．方法的检出限为２．８×１０－７ｇ／ｍＬＬ－色氨酸，线性范围１．０×１０－６～８．０×１０－５ｇ／ｍＬ．试验了常见氨基酸及糖对Ｌ－色氨酸测定的干扰情况，方法已用于１８氨基酸注射液内Ｌ－色氨酸含量测定     

无机还原剂铁（Ⅱ）──光泽精化学发光反应的研究

采用流动注射技术，研究了由Ｊｏｎｅｓ柱产生的铁（Ⅱ）与光泽精的化学发光反应，建立了新的测定铁的化学发光分析法．方法的检出限为４×１０－１２ｇ／ｍＬ铁，相对标准偏差为２．０％（２×１０－８ｇ／ｍＬ铁，ｎ＝１１），线性范围为１×１０－１１ｇ／ｍＬ～１×１０－５ｇ／ｍＬ．该法用于一些化学试剂和镁合金中痕量铁的测定，结果令人满意．     

流动注射化学发光法测定马钱子碱

报道一种微量测定马钱子碱的新方法,该方法是基于高锰酸钾对马钱子碱的氧化作用,建立了微量马钱子碱的流动注射化学发光分析法。本法的线性范围为４．０×１０－８～８．０×１０－５ｇ／ｍＬ,检出限为６×１０－９ｇ／ｍｌ马钱子碱,对番木鳖中马钱子碱的测定,回收率在９４％～１０５％之间,相对标准偏差小于３％,并于药典标准方法进行了对照,结果一致。     

流动注射化学发光分析法测定金银花中的绿原酸

根据绿原酸对鲁米诺Ｈ２Ｏ２Ｃｒ３＋ 化学发光体系具有强烈的抑制作用,建立了绿原酸的化学发光分析法．该法简便、迅速、灵敏度高．化学发光强度的变化值与绿原酸的浓度在２×１０－８ｇ／ｍＬ～４×１０－６ｇ／ｍＬ的范围内呈线性关系,检出限达６．３×１０－９ｇ／ｍＬ．该方法成功用于中药金银花中绿原酸的测定．     

流动注射-化学发光法测定盐酸羟胺

基于盐酸羟胺在弱酸性介质中被ＫＩＯ４ 氧化产生Ｈ２ Ｏ２ , Ｈ２ Ｏ２ 与Ｌｕｍｉｎｏｌ 发生化学发光反应,设计了流动注射—化学发光测定盐酸羟胺的方法． 线性范围为０－０３ ～１－０μｇ／ｍＬ; 检出限为６－７ｎｇ／ｍＬ; ＲＳＤ 为３－６ ％ ． 测定含盐酸羟胺试样, 回收率为９５ ％ ～９８ ％ ．     

新型氰根化学发光传感器的研究

基于ＣＮ￣（－）与从固定在Ｄ－２０１型阴离子交换树脂上洗脱下来的Ｌｕｍｉｎｏｌ直接化学发光反应，结合流动进样技术，设计出一种简便、快速、灵敏度高的新型ＣＮ￣（－）化学发光传感器．ＣＮ￣（－）传感器的线性响应范围为１．０ｘ１０￣（－９）～１．０ｘ１０￣（－６）ｇ／ｍＬ，相对标准偏差为３．０４％（ｎ＝１１），检测限为７．８ｘ１０￣（－１０）ｇ／ｍＬ。固定化Ｌｕｍｉｎｏｌ柱可连续使用２００次以上。用ＣＮ￣（－）传感器测定了饮用水、环境水及工业废水中的ＣＮ￣（－）含量，获得了满意结果．     

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     

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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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has