锇─钼酸盐──碱性染料显色反应的研究

在聚乙烯酸（ＰＶＡ）存在下，锇与铅酸铵和碱性染料（罗丹明Ｂ，了基罗丹明Ｂ，耐尔蓝）形成离子缔合物，不同碱性染料所形成的缔合物服从比耳定律的浓度范围和摩尔吸光系数分别是：０￣１．２μｇ／２５ｍｌ和ε５７０ｎｍ＝２．６２×１０６Ｌ·ｍｏｌ－１·ｃｍ－１（罗丹明Ｂ体系），０￣１．０μｇ／２５ｍｌ和ε５７０ｎｍ＝２．８６×１０６Ｌ·Ｃｍ－１（丁基罗丹明Ｂ体系）；０～１．８μｇ／２５ｍｌ和ε５８５ｎｍ＝２．８１×１０６Ｌ·ｍｏｌ－１·ｃｍ－１（耐尔蓝体系）研究了三个显色体系的光度特性和３０多种共存离子的影响，方法用于一些催化剂和冶金产品中锇的测定，结果满意．     

离子缔合物光度法测定黑色食品中微量磷

研究了罗单明Ｂ－磷钼杂多酸离子缔合物体系的光谱特性，确定了用于分光光度法测磷的最佳条件．在非离子表面活性剂聚乙烯醇（ＰＶＡ）存在下，缔合物的λｍａｘ＝５９２ｎｍ，表观摩尔吸光系数ε５９２＝１．８×１０５Ｌ·ｍｏＬ－１·ｃｍ－１，缔合物中ＲｈＢ∶Ｐ（Ⅴ）＝４∶１．     

丁基罗丹明B—钨酸钠—PVA高灵敏光度法测定痕量钯的研究

研究了在聚乙烯醇（ＰＶＡ）存在下,钯与钨酸钠和丁基罗丹明Ｂ（ＢＲＢ）反应形成的有色离子缔合物用于痕量钯的光度法测定．最佳条件为：［Ｈ２ＳＯ４］＝１．２ｍｏｌ·Ｌ－１,［ＷＯ２－４］＝９．１×１０－５ｍｏｌ·Ｌ－１,［ＢＲＢ］＝３．０×１０－５ｍｏｌ·Ｌ－１．缔合物的最大吸收位于５７５ｎｍ处,表观摩尔吸光系数ε＝７．９８×１０７Ｌ·ｍｏｌ－１·ｃｍ－１．钯量在０～１０ｎｇ／２５ｍｌ范围内服从比尔定律．体系至少稳定１４０ｈ,检测限（３σ）０．０４８μｇ·Ｌ－１（ｎ＝１０）,对０．４０μｇ·Ｌ－１Ｐｄ（Ⅱ）测定的相对标准偏差为３．３９％（ｎ＝１１）．缔合物的摩尔比为Ｐｄ∶ＢＲＢ＝１∶４．考察了５０多种共存离子的影响．本法已用于炭基和铝基钯催化剂中微量钯的测定,结果满意     

DApBM-V(Ⅴ)-Mn(Ⅱ)-Tween-80体系光度法测定钒(V)

在磷酸介质中，在Ｍｎ（Ⅱ）和Ｔｗｅｎ－８０存在下，ＤＡｐＢＭ与钒（Ⅴ）生成橙黄色化合物，产物至少可稳定３．５ｈ．最大吸收波长为４８５ｎｍ．摩尔吸光系数ε＝４．０１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１和ε＝１．５７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１．钒（Ⅴ）量在０．５～３．０μｇ／２５ｍｌ及３．０～１０．０μｇ／２５ｍｌ间符合比尔定律．该体系灵敏度高，选择性较好，用于中草药中痕量钒（Ⅴ）的测定，结果满意     

铜—芦丁极谱络合吸附波的研究

在０．０１ｍｏｌ·Ｌ－１ＫＯＨ底液中（ＰＨ＝１１．７），用单扫示波极谱法可获得灵敏的铜—芦丁络合吸附波，铜浓度在５．０×１０－７～５．０×１０－５ｍｏｌ·Ｌ－１范围内与二阶导数波峰高成正比关系．检测限为３．０×１０－７ｍｏｌ·Ｌ－１，测得电活性络合物组成为Ｃｕ（Ⅱ）∶Ｒｔ＝１∶１，条件稳定常数为β＝１．４×１０５．     

Gd（NO_3）_3／Er（NO_3）_3－Gly－H_2O三元体系的研究（25

测定了Ｇｄ（ＮＯ_３）_３／Ｅｒ（ＮＯ_３）_３－Ｇｌｙ－Ｈ_２Ｏ三元体系在２５℃时的溶度和饱和溶液折光率。各体系的溶度和饱和溶液折光率曲线均由４支组成，分别与ＲＥ（ＮＯ_３）_３·ｎＨ_２Ｏ（ＲＥ＝Ｇｄ，ｎ＝６；ＲＥ＝Ｅｒ，ｎ＝５）、配合物ＲＥ（Ｇｌｙ）_２（ＮＯ_３）_３·２Ｈ_２Ｏ，ＲＥ（Ｇｌｙ）_４（ＮＯ_３）_３·Ｈ_２Ｏ及Ｇｌｙ相对应。     

RE（NO_3）_3－Ala－H_2O三无体系在25℃时的半微量相平衡研究

测定了ＲＥ（ＮＯ_３）_３－Ａｌａ－Ｈ_２Ｏ（ＲＥ＝Ｓｍ，Ｇｄ，Ｅｒ）三元体系在２５℃时的溶解度和饱和溶液折光率，绘制了相应的溶解度图与饱和溶液折光率曲线。各体系的溶解度曲线与折光率曲线均由４支组成，分别与ＲＥ（ＮＯ＿３）３．ｎＨ＿２Ｏ（ＲＥ＝Ｓｍ，Ｇｄ，ｎ＝６；ＲＥ＝Ｅｒ，ｎ＝５），ＲＥ（Ａｌａ）（ＮＯ＿３）３·Ｈ＿２Ｏ，ＲＥ（Ａｌａ）＿４（ＮＯ＿３）＿３·Ｈ＿２Ｏ和Ａｌａ的晶体相对应．     

金属-氨基多羧酸类配合物分子和晶体结构的研究(Ⅲ)——K〔Fe~Ⅲ(ida)_2〕·3H_2O配合物的合成及结构测定

本文报导了Ｋ〔ＦｅⅢ（ｉｄａ）２〕·３Ｈ２Ｏ（ｉｄａ２－＝氨基二乙酸根）配合物的合成及它的分子结构和晶体结构的测定．具体结果如下：正交晶系，Ｐｂｃｎ空间群，ａ＝１８．７６５（３），ｂ＝１０．４４７（３），ｃ＝１５．６４５（２），ｖ＝３０６７（１）３，单位晶胞中的分子数为８，Ｄｃ＝１．７８ｇ·ｃｍ－３，Ｄｏ＝１．７２ｇ·ｃｍ－３，μ＝１．３１４ｍｍ－１，Ｆ（０００）＝１６８８，对于２７６７个独立的衍射点，它的Ｒ和Ｒｗ值分别为０．０５２和０．０４７．其中〔ＦⅢ（ｉｄａ）２〕－是一个Ｎ和Ｎ顺位的近似八面体结构．由此可知具有对称电子结构（ｈｉｇｈ－ｓｐｉｎｄ５）的ＦｅⅢ与被看成是ｅｄｔａ４－（＝乙二胺四乙酸根）去掉了ＣＨ２—ＣＨ２基团的双ｉｄａ２－配体形成的配合物只能选择六配位的八面体结构     

大孔树脂固定化葡萄糖异构酶及其动力学研究

研究了用大孔径聚丙烯腈树脂固定化葡萄糖异构酶的方法及固定化酶的性质．固定化酶活力达到４．６２９６×１０－６ｍｏｌ·ｇ－１·ｓ－１左右．同时研究了固定化酶的反应动力学，测得其米氏常数Ｋｍ＝６．００ｍｏｌ·Ｌ－１，最大反应速度Ｖｍａｘ＝１．４０×１０－５ｍｏｌ·ｇ－１·ｓ－１．     

Ni(VOPO_4)_2·4H_2O的合成与晶体结构

在V2O5－H3PO4－Ni－CH3NH2－H2O体系中,通过反应原料间的组装反应合成Ni（VOPO4）2·4H2O绿色晶体,并通过元素分析、IR、DTA－TGA及ESR谱进行表征．晶体结构由单晶X射线衍射法确定,晶体属四方晶系,I4／m空间群,a＝b＝0．6228（2）nm,c＝1．3327（4）nm,V＝0．5169（5）nm3,Z＝2．     

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