球形硅胶表面镉离子印迹聚合物的制备与性能研究

通过在碱性条件下正奎酸乙酯(TEOS)水解合成球形硅胶,用2-醛基吡啶和N-3-(三甲氧基硅基)丙基乙二胺在镉离子存在的条件下,对其表面进行修饰,从而形成对镉离子具有选择性吸附的印迹聚合物,并对其吸附性能进行了研究。     

铜试剂螯合纤维吸附性能研究

以预处理后的棉纤维为骨架，通过间接醚化法，接枝合成最新型铜试剂敷合纤维素，并对其吸附性能进行了研究。     

2-氨基-5-巯基-1,3,4-硫二氮唑树脂的合成及其对铂族金属和金离子的吸附性能研究(英文)

合成了2-氨基-5-巯基-1,3,4-硫二氮唑树脂;研究了各因素对合成反应影响,用DMF做溶剂,最佳试剂摩尔比、反应时间、反应温度分别为SH/Cl=3/1、10h、80℃;树脂的功能基含量为3.24mmol FG/g树脂,用FT-IR及XPS表征了树脂的结构,进行了树脂吸附性能的研究,树脂对Au(Ⅲ)、Pt(Ⅳ)、Ru(Ⅲ)、Pd(Ⅱ)、Os(Ⅵ)、Ir(Ⅳ)的吸附容量分别高达4.04、1.02、1.5、2.32、0.83、1.02mmol离子/g树脂;测定了吸附速度曲线,树脂吸附金离子的表观活化能为17.0kJ/mol;用XPS研究了树脂吸附金的机理。     

水杨酸-硫脲树脂的合成及其对贵金属离子的吸附性能

以水杨酸、甲醛和硫脲为原料，在盐酸催化下经Mannich反应合成了水杨酸．硫脲螯合树脂(SFT)，测定了该树脂对金属离子Ni^2 ，Cu^2 ，Pb^2 ，Zn^2 ，Cd^2 ，Ag^ 及对贵金属离子Au^3 ，Pd^2 ，Pt^4 的吸附性能．研究了吸附时间、贵金属离子浓度对吸附性能的影响．结果表明，该树脂对贵金属离子具有较好的吸附能力和较快的吸附速率，吸附符合Freundlich等温式，液膜扩散是吸附的主控步骤．     

咪唑季铵盐棉纤维制备及其对DOSO3-吸附性能研究

本文用20％的NaOH溶液对棉纤维的预处理、醚化、接枝合成工艺进行了优化；在不同条件下，研究了咪唑季铵盐棉纤维对DOSO3^-的吸附性能．结果表明，用NaOH预处理棉纤维后，在适当的条件下醚化棉纤维素，再用氢氧化钠作催化剂，按3g环氧基纤维素醚与10mL甲基咪唑配比接枝，得到白色咪唑季铵盐纤维素．用咪唑季铵盐棉纤维对DOSO3^-进行吸附，吸附率可达91．8％，吸附效果令人满意．     

新型自组装材料的制备及其对钍的识别研究

以钍(IV)为模板离子,制备了基于硅胶表面修饰的离子印迹聚合物.采用傅立叶变换红外光谱和N2吸附-脱附对其进行了结构表征.通过静态分析和动态分析系统研究了印迹聚合物对钍(IV)的吸附行为及选择性,结果表明该印迹材料对钍(IV)的等温吸附线属于Langmuir吸附模型.与非印迹聚合物相比,离子印迹聚合物对钍(IV)离子有较好的选择识别能力,模板离子钍(IV)相对竞争离子铀(VI)、镧(III)和铈(III)的选择系数分别是50.8,78.3和82.6.并且吸附速率快,10 min即达到吸附平衡,最大吸附容量为56.8 mg/g,可望在分离富集领域获得实际应用.     

乙二胺螯合棉纤维的制备及吸附性能研究

采用正交试验法，对棉纤维的预处理、醚化、接枝合成工艺进行了优化；在不同条件下，研究了乙二胺螯合棉纤维对Cun^2 、Cd^2 、CrO4^2的吸附性能．结果表明，用NaOH预处理棉纤维后，在适当的条件下醚化棉纤维素，再用碳酸钠作催化剂，按3g环氧基纤维素醚与10mL乙二胺配比接枝，得到白色多胺型螯合纤维素。研究表明，乙二胺螯合棉纤维对Cu^2 、Cd^2 较易吸附，且吸附效果良好，对痕量的CrO4^2一有一定的吸附能力。     

3D花状钨酸锌的制备及其对铜离子的吸附性能

使用阴离子表面活性剂十二烷基硫酸钠(SDS)-尿素(Urea)辅助水热法成功合成了3D花状钨酸锌(ZnWO4),采用X射线衍射(XRD)、扫描电子显微镜(SEM)对其结构和形貌进行表征.研究发现:SDS-Urea的协同作用促使ZnWO4由零维、一维向三维结构转变,对诱导3D花状ZnWO4的形成起到重要作用.以3D花状ZnWO4为吸附剂,铜离子溶液为模拟废水,测定其在水体中的吸附行为,结果显示3D花状ZnWO4对Cu2+吸附性能优于商品活性炭,最大吸附容量达293.1mg·g-1.优良的吸附性能归因于合成产物较大的比表面积、丰富的孔隙结构和表面负电性.     

含苯并三唑基团抗紫外辐射活性染料合成与应用性能研究

以2-(2-羟基-5-磺酸基苯基)-5-氨基-2H-苯并三唑基团为封闭基,对位酯或磺化对位酯为重氮组分,合成了黄、橙、红和蓝色4只M型活性染料,并用质谱对其结构进行了表征.用合成的染料对棉纤维染色,测定了染料的上染率和固色率,发现黄色染料的染色性能较差.与未染色的棉纤维相比,染色后棉纤维的紫外线透过率大大降低.未染色纤维的UPF值为1.3,经过黄、橙、红和蓝色染料染色的棉纤维的UPF值分别为5.9、13.7、18.8、17.5,除黄色外都达到了很好的抗紫外线效果.通过对比也发现深色织物的抗紫外线效果比浅色的好.     

硫脲棉纤维的合成及对银吸附性能的研究

研究硫脲棉纤维的合成方法及其对银离子的吸附性能。该合成纤维对银离子的吸附率高达９５％，且吸附反应速度快；被吸附的银离子用４ｍｏｌ·Ｌ＾－１硝酸洗脱，洗脱率为９５％。实验表明，该合成纤维不仅合成方法简单，而且分离操作方便，可应用于银的富集和分离。     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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