几种α—氨基酸稀土的二元和三元配合物的合成及结构研究

在甲醇及水溶液中,合成了Nd~(3 )、Er~(3 )、Tb~(3 )与苏氨酸、半胱氨酸和酪氨酸固体配合物以及Tb~(3 )与酪氨酸和苯甲酸的三元配合物,组成为Ln(L)_3Cl_3·nH_2O(Ln=Nd、Er;L=Thre、Cys;n=2～4)和Ln_2L_3Cl_6·nH_3COH·mH_2O(Ln=Nd、Er、Tb;L=Tyr;n=2～4,m=4～8)以及Tb(Tyr)(Ben)Cl_2CH_3OH·2H_2O)。用红外、f-f超灵敏跃迁、荧光光谱及热分析测定了配合物的配位性质及结构。     

轻稀土硝酸盐与二苯并-30-冠-10固态配合物的合成及性质

合成了3:2型固体配合物[Ln(NO_3)_3]_3(DB30C10)_2·nH_2O(Ln=La、Ce、Nd、Eu时,n=6;Ln=Sm时,n=5:Ln=Cd时,n=4)。研究了冠醚及其配合物的红外光谱、紫外光谱及其热稳定性,讨论了配体、硝酸盐及配合物的荧光性能。乙腈中的电导测定结果表明配合物均为非电解质。     

稀土配合物研究(Ⅵ)——镧系元素与HPMBP和1,10二氮杂菲三元固态配合物的研究

本文合成了十三种镧系离子(La,Pr,Nd,Sm,~-Eu～Lu)与1—苯基—3—甲基—4—苯甲酰基—5—呲哇啉酮(HPMBP)和邻菲啰镧(phen)形成的三元混配配合物.元素分析确定其组成为 Ln(PMBP)_3·phe·_nH_2O(Ln=La 时,n=2;其它 n=1).研究了它们的红外,紫外——可见光谱,探讨了配合物的热稳定性.     

不同溶剂条件下LnA3·nH20的合成及研究

分别在60％和95％乙醇体系中合成了配合物LnA3·nH20(Ln=Eu^3 ，n=1；Ln=Yb^2 ,n=0；HA=对甲氧基苯甲酰苯甲酰甲烷)配合物．并用元素分析，红外光谱和差热-热重分析讨论了配合物的组成．     

氨基酸氯化稀土配合物的制备

在非水溶剂中合成了氯化稀土甘氨酸配合物Ln(Gly)_3Cl_3·3H_2O和氯化稀土与甘氨酸及邻菲罗啉多元配合物LuGly(phen)_2Cl_3·H_2O(Ln=Pr,Nd)。通过元素分析,红外光谱和热重分析确定配合物的组成。     

铕、铽与吲哚-3-丙酸、邻菲口罗啉配合物的合成及性质研究

报道了在水溶液体系中铕、铽与吲哚— 3—丙酸 (IP)形成固态二元配合物及铕、铽与IP、邻菲啉(phen)形成固态三元配合物。通过元素分析、红外光谱、紫外光谱、和热重—差热分析 ,确定了配合物的组成及成键特征。二元配合物组成为Ln(IP) 3 ·2H2 O ,三元配合物组成为Ln(IP) 3 ·phen ,其中Ln =Eu、Tb。在发光性能方面 ,三元配合物较二元配合物好     

稀土—山梨酸—苯酰丙酮三元固态配合物的合成及性质的研究

在无水二噁烷中合成了不同配比的苯酰丙酮(HBA)和山梨酸(已二烯酸,HSA)与 La(Ⅱ),Nd(Ⅱ),DY(Ⅱ),Yb(Ⅱ)的三元固态配合物,研究了它们的 UV、IR,热谱、X—光粉未衍射和浴解性等.通过元素分析,确定了这些配合物的化学组成式为 Ln(BA)(SA)Cl·2H_2O[Ln=La(Ⅱ),Dy(Ⅱ)]、和 Ln(BA)_2(SA)·2H_2O[Ln=Nd(Ⅱ),Yb(Ⅱ)].     

稀土甘氨酸硝酸盐固体配合物热分解机理研究

本文对稀土硝酸盐与甘氨酸生成的配合物 RE(NO_3)_3·(Gly)_4Ln=La.Ce.Pr.Nd.Sm.Eu.Gd.Tb;Gly=Gly(cine)进行了 TG—DTG.DSC 分析,确定了配合物的热分解过程,比较了配合物的热稳定性;利用 Kissinger 公式计算了配合物的表现分解活化能;从 DSC 分析得到了配合物的相变焓。     

稀土冠醚类配合物的研究(Ⅻ)——轻稀土溴化物与苯并-15-冠-5配合物的合成及性质

以热乙睛为介质,合成出轻稀土溴化物与苯并-15-冠-5(B15C5)的配合物Ln(B15C5)Br_3·nH_2O(Ln=L_α-Nd,n=1,2).所得配合物是非溶剂化的,置于空气中吸水很快.通过元素分析、溶解性与摩尔电导、红外光谱、紫外光谱、核磁共振氢谱及差热一重分热析研究了配合物的组成和有关性质.     

镧系元素-2-羧基喹啉-1,10-二氮杂菲固态三元配合物的合成及表征

报道了镧系元素Ln(Ⅲ)(Ln=Sm,Eu,Tb)离子与2-羧基喹啉及1,10-二氮杂菲反应形成三元配合物。考察了其红外光谱、荧光光谱、热谱,测定了X-射线粉末衍射及元素分析数据。确定了该类配合物的组成为:Ln(Qld)_2(phen)_2·H_2O.(Qld代表2-羧基喷啉,phen代表1,10-二氮杂菲)。     

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

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