三元钙配合物的分子内芳环堆积效应研究

pH电位滴定法测定了Ca(Ⅱ）与核苷酸NTP（NTP为腺苷5′－三磷酸和尿苷5′－三磷酸）和另一芳环系列配体HRB形成的三元混配配合物Ca(HRB)(NTP)^n-(HRB=phen,bpy和trp;n=2或3）在水溶液中的稳定常数（I＝0.1mol/L,KNO3;25℃）。比较了二元和三元混配配合物的稳定性差异，认为三元混配配合物稳定性的增加可归因于π－酸－π－碱之间的合作效应和分子内芳环配体的堆积作用。     

Mn2+配合物的合成及对H2O2的分解研究

合成了氨基葡萄糖、有机酸与Mn2+的系列三元和二元配合物,讨论了合成条件,对目标产物进行了表征,表明丙酮酸、水杨酸、半胱氨酸3种有机酸与氨基葡萄糖-Mn2+配合效果较好。将合成的目标配合物进行了过氧化氢催化分解实验,发现氨基葡萄糖-丙酮酸-Mn2+、氨基葡萄糖-Mn2+、水杨酸-Mn2+、丙酮酸-Mn2+4种配合物对过氧化氢分解有催化活性,并有缓释催化的特点,可成为较有前景的过氧化氢持续分解的催化剂。     

邻二氮菲氮氧化物与稀土配合物的合成与性质

本文合成了邻二氮菲单氮氧化物与部分稀土丙烯酸盐的三元固态配合物．通过元素分析、红外光谱、紫外光谱、摩尔电导、差热分析对该系列配合物进行了表征。研究了Ｓｍ（Ⅲ）Ｅｕ（Ⅲ）配合物的萤光性质．     

三元混配配合物的稳定性研究(Ⅷ).Pt(Ⅱ)-UTP-ArL体系

用pH电位滴定法测定了铂( )与尿苷5′-三磷酸和另一芳环系列配体ArL形成的三元混配配合物Pt(ArL)(UTP)n-(ArL=Phen,Bpy和Trp;n=2或3)在水溶液中的稳定常数(I=0.1mol/L,KNO3;25℃).用ΔlgKM比较了二元和三元混配配合物的稳定性差异,认为三元混配配合物稳定性的增加可归因于π-酸-π-碱之间的合作效应和分子内芳环配体的堆积作用,后者和参与堆积的芳环大小一致,即稳定性Pt(Phen)(UTP)2->Pt(Bpy)(UTP)2->Pt(Trp)(UTP)3-.     

轻稀土与联吡啶和菲罗啉三元配合物的合成与表征

合成了稀土（Ｌｎ）与２，２－联吡啶（Ｌ１）、１，１０－菲罗啉（Ｌ２）的三元固态配合物。通过元素分析、ＩＲ谱、ＴＧＡ谱和摩尔电导等对该系列配合物进行了表征，实测结果与通式ＬｎＬ１Ｌ２Ｃｌ３·３Ｈ２Ｏ符合较好。抗菌试验表明，该系列配合物有较强的广谱抗菌作用。     

三元混配配合物分子内的芳环堆积作用(Ⅴ)Ca(Ⅱ)/核苷酸/杂环碱体系

用pH电位滴定法测定了Ca(Ⅱ)与腺苷5'-三磷酸(ATP)和芳香杂环碱A(Phen,Bpy和Trp)形成的三元混配配合物Ca(A)(ATP)n-(n=2或3)的稳定常数(I=0.1,KNO3,25℃).比较了三元混配配合物与三元配合物的稳定性大小,其差值ΔlgKCa要比预期的统计值ΔlgKst来得大.这种三元混配配合物稳定性的增加可归因于π-酸和π-碱之间的合作效应和配体分子间的芳环堆积作用.     

乙酸稀土与8-羟基喹啉配合物的合成与应用

合成了６ 种轻稀土与乙酸（ＨＡｃ） 、８ —羟基喹啉（ＨＯｘ） 形成的三元固体配合物,通过元素分析确定其化学组成为ＲＥ（Ｏｘ）２Ａｃ（ＲＥ＝ Ｌａ, Ｐｒ, Ｎｄ ,Ｓｍ , Ｅｕ, Ｇｄ ; Ａｃ ＝ ＣＨ３ＣＯＯ—） ,用摩尔电导、ＩＲ、荧光光谱、磁化率和ＴＧ－ ＤＴＧ 等对该系列配合物进行了表征。抑菌活性测定结果表明：该系列配合物有较强的广谱抑菌作用。     

铕(钇)-水杨酸-邻菲啰啉配合物的合成、表征及发光性能

以水杨酸(Hsal)和邻菲啰啉(phen)为协同配体,铕钇离子为中心体,合成不同Eu/Y摩尔比的系列三元双核配合物,并通过元素分析、紫外可见光和红外光谱确定配合物的组成.研究配合物的发光性能以及Eu/Y摩尔比的影响.结果表明,配合物的组成为EuxY1-x(sal)3(phen)(x=0.1~1.0).在Eu/Y摩尔比为0.6:0.4时,配合物Eu0.6Y0.4(sal)3(phen)的发光强度最强.在该系列配合物中,不仅配体可以将吸收的能量传递给发光的铕离子,使其发光,而且不发光的钇配合物也可将其吸收的能量通过分子内能量传递给铕离子,增强铕的发光强度.     

稀土高氯酸盐甘氨酸咪唑三元配合物的热分析

采用TG-DTG,DSC对9种稀土高氯酸盐甘氨酸咪唑三元配合物的热分解过程进行了研究.比较了配合物的热稳定性;利用Kissinger公式计算了配合物的表观分解活化能;从DSC分析得到了配合物的脱水焓及分解焓,发现稀土配合物的表观分解活化能、配合物的脱水焓及分解焓呈现一定的规律性.     

三磷酸腺苷与芳香杂环配体的三元混配铂(Ⅱ)配合物的稳定性研究

用pH电位法测定了Pt(Ⅱ)与腺苷5'-三磷酸(ATP)的三元混配配合物Pt(A)(ATP)n-(杂环碱A=PhenBpyTrpn=2或3)在水溶液中的稳定常数(I=0.1mol/L,KNO3;25℃)。比较了三元混配配合物和二元配合物的稳定性大小,其差值△lgKPt要比预期的统计值△lgKst大。这种三元混配配合物稳定性的增加可归因于π-酸-π-碱之间的合作效应和配体分子间的芳环堆积效应。     

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     

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

正~~