双-{N-[2-脱氧-β-D-吡喃葡糖-2-(3-甲酰基水杨酸胺)]} 金属合物及其金属胶束催化PNPP水解动力学

作者合成和表征了双－｛N-[2-脱氧－β－D－吡喃葡糖－2－（3－甲酰基水杨酸胺）]｝M2（Ⅱ）配合物（M＝Cu,Zn,Co）；研究了该双核金属配合物在CTAB胶束溶液中催化PNPP水解反应动力学；用双核复合物金属胶束的三元复合动力学模型对实验结果进行了定理处理，结果表明：配合物在CTAB胶束溶液中形成金属胶束后，催化水解的能力明显增强，可使反应速率提高几百倍至二千多倍，金属配合物催化水解的速率常数大小顺序为Cu(Ⅱ），Zn（Ⅱ）和Co(Ⅱ)。     

微波辐射下交联壳聚糖树脂的制备及其吸附性能

在稀醋酸溶液中，微波辐射下壳聚糖与Zn^2 反应制备了壳聚糖Zn^2 配合物，然后将制得的配合物与环氧氯丙烷在微波辐射下进行交联反应后，用稀酸除去Zn^2 ，合成了具有Zn^2 离子孔穴的交联壳聚糖树脂。实验考察了该树脂对一些金属离子的吸附性能，并对影响树脂吸附性能的因素进行了研究。     

两个Cu（Ⅱ）配位超分子的研制及光物理性质

采用水热和溶剂热方法合成了2个Cu（Ⅱ）配合物：[Cu（C3H2O4）（phen）（H2O）]2·3H2O（1）和[Cu（inic）2（H2O）3]·H2O（2）（phen=邻菲啰啉;inic=异烟酸根）.通过单晶X射线衍射、IR、UV-Vis-NIR吸收光谱、表面光电压光谱（SPS）对其进行了结构表征和物性测试.结构分析表明,2种配合物均为单核Cu（Ⅱ）配合物.配合物（1）中Cu（Ⅱ）离子为五配位,配位环境为畸变的四方锥构型;配合物（2）中Cu（Ⅱ）离子为五配位,配位微环境为畸变的四方锥构型.丰富的分子间氢键将它们网联成了2D配位超分子.2种配合物的SPS在300～800nm范围内都呈现出正的表面光伏响应,表明它们都具有一定的光电转换能力.分析讨论了2种配合物的电子光谱和SPS谱.     

TiO_2-KNO_3溶液界面吸附Cu(Ⅱ)的动力学特征

本文通过用BAM理论处理吸附动力学数据，得出Cu（Ⅱ）在TiO2-KNO3溶液界面上的吸附过程由液膜扩散所控制，吸附反应级数为一级．     

粘土-壳聚糖复合吸附剂吸附铬(Ⅵ)离子性能的研究

通过壳聚糖与粘土的结合，制备出复合吸附剂，并研究其对Cr（Ⅵ）离子的吸附性能．研究结果表明，与单一的粘土或壳聚糖相比，该吸附剂对Cr（Ⅵ）离子吸附速度快、吸附能力强．吸附除去Cr（Ⅵ）的最佳工艺条件是：壳聚糖与粘土质量比为0．04，pH值4～6，Cr（Ⅵ）离子的质量浓度≤10mg／L，吸附平衡时间为40min，吸附荆用量为8．0g／L．     

壳聚糖—Cu(Ⅱ)配合物对尿素的吸附

研究了利用天然高分子聚合物壳聚糖与Ｃｕ（Ⅱ）的配合物配位吸附尿素的方法。结果表明：当配合物中含铜质量分数为６．５％,溶液ｐＨ＝６．０时吸附尿素效果最好。当尿素原液质量浓度为１３００．０ｍｇ／Ｌ,吸附时间８．０ｈ时,吸附量可达８３．６ｍｇ／ｇ。     

3,5—diBr—PADAP—Triton X—100光度法测定微量铜

本文系统研究了在表面活性剂TritonX－100存在下，3，5—diBr—PADAP与Cu（Ⅱ）的显也反应性能，提出了测定微量铜的新方法．在pH3．5HAc－NaAc缓冲液中，Cu（Ⅱ）与3，5-diBr-PADAP形成1：2配合物，其最大吸收波长为573nm，表观摩尔吸光系数为8．5×104，Cu（Ⅱ）含量在0～4μg／10ml范围内服从比耳定律．在确定条件下，大量金属离子不干扰，反应有较好的选择性．方法直接用于铝合金中微量铜测定，结果满意．     

D-葡萄糖胺西佛碱金属配合物金属胶束催化PNPP水解反应动力学的研究

合成了[N-(2-脱氧－β-D-吡喃葡糖－2－水杨醛胺）]M（Ⅱ）单核金属配合物（M=Cu,Zn,Co,Ni)，使用分光光度法研究了该单核的在CTAB胶束溶液中催化PNPP水解反应动力学，用单核配合物金属胶束的三元复合动力学模型对实验结果进行了讨论。实验结果表明：这类配合物在CTAB胶束溶液中形成金属胶束后，催化水解的能力明显增强，在中性或偏碱性环境中对PNPP的水解具有很好的催化活性，且金属配合物催化水解的速率常数其大小顺序为Zn(Ⅱ),Cu(Ⅱ),Co(Ⅱ),Ni（Ⅱ）。     

一维配位聚合物{[Cu（tzda）（H2O）3]·3．5H2O}n的合成、晶体结构及电化学性质

合成了一维配位聚合物{[Cu（tzda）（H2O）3]·3．5H2O}n（H2tzda为1,3,4-噻二唑-2,5-二硫代乙酸）,对其结构进行了红外、元素分析和X射线单晶衍射测定．配合物属单斜晶系,空间群C2／c,晶胞参数a=1．9073（12）nm,b=0．7134（4）nm,c=2．3635（15）nm,β=91．3780（10）°,Z=8．金属中心Cu（Ⅱ）离子呈现出五配位,处于四角锥的配位环境;配体阴离子tzda2-采用双（单）齿配位模式将Cu（Ⅱ）离子连接成一维链状结构．配合物的电化学研究表明：在-0．3—0．4V电位范围内,Cu2＋／Cu＋电对在电极上的氧化还原反应过程是准可逆过程且受扩散控制．     

壳聚糖对铬（Ⅱ）离子吸附作用的研究

研究了壳聚糖对铬（Ⅲ）离子的吸附性能,测定了吸附等温线的吸附动力学曲线。实验结果表明壳聚糖对铬（Ⅲ）离子有较强的吸附能力。吸附率受ｐＨ值影响较大,在此基础上,通过ＩＲ,ＵＶ,ＳＥＭ等检测手段证实铬（Ⅲ）离子与壳聚糖之间发生了配位作用。     

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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