Pb（Ⅱ）、Zn（Ⅱ）与5－Br－PADAP络合平衡的研究

本文研究了Ｐｂ（Ⅱ）－５－Ｂｒ－ＰＡＤＡＰ及Ｚｎ（Ⅱ）－５－Ｂｒ－ＰＡＤＡＰ络合反应体系的吸收光谱，用基于Ｒｏｓｅｎｂｒｏｃｋ算法的最优化程序处理了光度测量数据，发现Ｐｂ（Ⅱ）与５－Ｂｒ－ＰＡＤＡＰ形成１：１络合物，稳定常数ｌｇβ＿１＝１１．２１，摩尔吸光系数ε＿１＝６．２×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）；Ｚｎ（Ⅱ）在ｃ＿Ｌ＞ｃ＿Ｍ的条件下主要形成１：２络合物，ｌｇβ＿２＝２２．３６，ε＿２＝１．２８×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。     

利用选择性重原子增强的固体表面发光技术同时测定痕？…

利用ＳｒＣｌ２和Ｐｂ（Ａｃ）２作为选择性重原子微扰剂，分别诱导出吡哌酸的固体表面延迟荧光和氟哌酸的室温磷光，不经分离直接测定混合样品中的两种药物获得成功。在ｐＨ约１１的条件下测定吡哌酸的线性范围为５×１０＾－７ｍｏｌ／Ｌ￣３×１０＾－３ｍｏｌ／Ｌ，测定氟哌酸的线性范围为３×１０＾－５ｍｏｌ／Ｌ￣３×１０＾－３ｍｏｌ／Ｌ。     

3,5—二溴水杨醛缩4—氨基安替比林与铜的荧光猝灭反应？…

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／ｅｎ＝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＾－５ｍｏｌ／Ｌ￣１．２×１０＾－７ｍｏｌ／Ｌ。用于测定人发中     

溴离子对银阳极溶出测定影响的研究

本文研究了Ｂｒ￣－离子对银阳极溶出的影响，在０．５ｍｏｌ／ＬＨＮＯ＿３底液中测定银时加入５×１０￣（－４）ｍｏｌ／ＬＢ离子，可以提高灵敏度１０倍以上。其原因是银溶出时生成的Ａｇ￣＋离子与加入的Ｂｒ￣－离子结合生成ＡｇＢｒ沉淀，随后又与过量的Ｂｒ￣－离子生成［ＡｇＢｒ＿２］￣－络合物，加快了溶出反应的进行。富集１０ｍｉｎ，可以测定２．５×１０￣（－９）ｍｏｌ／ＬＡｇ￣＋离子。     

双显色剂协同效应分光光度法研究银－1．10邻二氮菲－溴酚蓝－亚甲蓝体系测定银（Ⅰ）

本文研究了利用溴酚蓝（ＢＰＢ）与亚甲蓝（ＭＢ）所形成的等色染料离子对萃取测定银的方法。用酸将１．２－二氯乙烷中的Ａｇ（ｐｈｅｎ）＿２（ＢＰＢ）解析后，向其中加入与溴酚蓝颜色相近的亚甲蓝，利用１．２－二氯乙烷中溴酚蓝、亚甲蓝的染料离子对提高了测定银的灵敏度，其摩尔吸光系数ε＝１．１３×１０￣５Ｌ／ｍｏｌ／ｃｍ，银量在０～６×１０￣（－６）ｍｏｌ／Ｌ的范围内符合比耳定律。本法用于定影液中银的测定，结果满意。     

5－Br－PADN双峰双波长法测定铁（Ⅲ）

研究５－Ｂｒ－ＰＡＤＮ与铁（Ⅲ）的显色反应，在ｐＨ９．０～９．４范围内，当有１０％ＳＤＳ存在时，铁（Ⅲ）与５－Ｂｒ－ＰＡＤＮ形成１：４的稳定配合物。λ＿（ｍａｘ）为５３４ｎｍ，ε为５．１３×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），铁（Ⅲ）浓度在０～１２．５×１０￣（－４）ｇ／Ｌ范围内符合Ｂｅｅｒ定律，用双峰双波长法测定茶叶中痕量铁（Ⅲ），结果满意。     

钾铵离子选择电极的研制及其在土壤肥料分析中的应用

以亚戊基双（４＇－苯并１５－冠－５）为中性载体，制得对Ｋ￣＋、具有相近响应的ＰＶＣ膜离子选择性电极。Ｎｅｒｎｓｔ线性响应范围１×１０￣（－１）～８×１０￣（－５）ｍｏｌ／Ｌ；响应斜率为５３ｍＶ／ＰＭ；对Ｌｉ￣＋、Ｎａ￣＋、Ｃａ￣（２＋）、Ｍｇ￣（２＋）、Ｂａ￣（２＋）的选择性系数分别为６×１０￣（－５），５×１０￣（－３），３×１０￣（－４），４×１０￣（－４），８×１０￣（－４）。用本电极可快速测出土壤肥料中速效氮、钾的含量。     

5—（4＇—卤代—2＇—羧基苯偶氮）绕丹宁的合成、荧光、￣1HNMR及MS研究

本文合成了三种新的有机荧光试剂：４ＣＲＡＣＰ—Ⅱ，４ＢＲＡＣＰ—Ⅲ，４ＩＲＡＣＰ—Ⅳ，确证了其结构，研究了荧光性质，发现Ⅱ在弱酸性介质中具有较强的荧光。ｐＨ＝５．３时，它与Ｃｕ（Ⅱ）形成荧光络合物，λ＿（ｅｘ）／λ＿（ｅｍ）＝３１０ｎｍ／４０８ｎｍ，检测限５×１０￣（－４）μｇ／ｇ。讨论了卤素对￣１ＨＮＭＲ、ＭＳ及Ｆ的影响。     

在表面活性剂存在下泰尔登的电分析化学特性研究

在ｐＨ７．００缓冲溶液中，当有０．００２０％ＯＰ存在时，泰尔登在－１．９５Ｖ产生一灵敏极谱波，利用此波可测定痕量泰尔登，检测下限为５．４×１０￣（－９）ｍｏｌ／Ｌ。用恒电位库仑法，计时库仑法和循环伏安法测得反应电子数为２，吸附量为１．１７×１０￣（－１０）ｍｏｌ／ｃｍ￣２，扩散系数为４．３×１００￣（－５）ｃｍ￣２／ｓ。     

聚2，5－二甲氧基苯胺薄膜电极对儿茶酚的电催化作用

研究了电化学方法制备的聚２，５－二甲氧基苯胺薄膜电极（Ｐ２５ＤＭＡｎ／Ｐｔ）对水溶液中儿茶酚的电催化作用，以及影响催化作用的主要因素，结果表明，在酸性较强的水溶液中，在较充的浓度范围内（儿茶酚的浓度为１×１０￣－１～５×１０￣－５ｍｏｌ／Ｌ）均有很好的电催化作用，催化电流与儿茶酚浓度呈良好的线性关系。     

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