钛纳米溶胶对棉织物的抗紫外性能研究

利用溶胶凝胶法制备了钛纳米溶胶，用激光粒度仪对溶胶粒径进行测试，用扫描电镜对溶胶在织物上的状态进行表征，用紫外透射率分析仪对织物的紫外透射率进行测试，实验结果表明经溶胶处理过的棉织物拥有优异、耐久的抗紫外性能，而物理机械性能变化小。     

抗菌/防紫外织物的制备及性能

采用微波预组装和水热再结晶相结合的方法制备高性能抗菌/防紫外织物,对样品的组成、红外和紫外吸收性能进行表征.以金黄色葡萄球菌和大肠杆菌作为实验菌株,采用抑菌环测试法研究紫外光照射和水洗后织物抗菌性能的变化特征.结果表明:组装纳米氧化锌的织物具有良好的紫外线屏蔽作用,对350~400nm波长的光波有较强的吸收能力.样品对金黄色葡萄球菌的抗菌性强于大肠杆菌,抑菌圈直径可达11.2mm,紫外灯照射后织物的抗菌活性明显增强,多次水洗后,抑菌活性几乎没有降低.     

微波接枝改性尼龙66织物的阻燃性能

采用微波技术将甲基丙烯酸缩水甘油酯(GMA)和9，10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)依次接枝到尼龙66织物表面，以提高其阻燃性能。探讨了引发剂质量分数、单体质量分数、反应时间和反应温度对接枝率和缩合率的影响，得到了最佳反应条件：引发剂KPS的质量分数0.3%，GMA单体质量分数5%，反应时间90min，GMA反应温度70℃；DOPO缩合反应时间4h，反应温度140℃，微波功率500W。对接枝后尼龙66织物的表面形貌采用衰减全反射-红外光谱（ATR FT-IR）与扫描电镜（SEM）进行表征，通过热重分析（TGA）、垂直燃烧及氧指数（LOI）测试对织物的热行为和阻燃性能进行了分析，测试了织物的力学性能，并对接枝织物的阻燃机理进行了初步探讨。结果表明：接枝后织物的成炭性能明显增强，阻燃性能得到改善。     

芳砜纶织物的纳米抗紫外整理

室温条件下,将经过一定浓度氢氧化钠处理的芳砜纶织物,用自制的TiO2-SiO2复合溶胶整理.整理后芳砜纶织物上原位生长有纳米TiO2,红外光谱测试表明纳米TiO2原位生长于芳砜纶纤维上.紫外老化实验证明,纳米TiO2可以有效地提高芳砜纶织物的紫外光老化性能.     

稀土掺杂二氧化钛的合成及抗紫外性能的研究

采用溶胶-凝胶法制备纯净及稀土掺杂的TiO2，用X-射线衍射（XRD）和UPF进行表征，研究了不同掺杂种类及掺杂量对紫外吸收性能的影响，结果表明掺杂2?O2、2％La2O3、1．2％Gd2O3时TiO2抗紫外性能均有明显提高，其中掺杂2％CeO2的效果最佳。     

氧化铝模板的制备与光致发光性能研究

在不同温度、电压、溶液中，应用阳极氧化高纯铝片的方法制备出不同孔径、厚度的阳极氧化铝（AAO）模板，用扫描电子显微镜（SEM）表征了AAO模板的微观结构，应用紫外可见分光光度计、荧光光度计对模板进行了光学特性表征，发现在草酸溶液中制备的模板具有紫外吸收和光致发光性能。     

有机-无机纳米杂化材料P(MMA-BMA)-TiO2的制备和表征

采用溶胶-凝胶法制备了聚甲基丙烯酸甲酯（PMMA）-聚甲基丙烯酸丁酯（PBMA）／TiO2杂化材料，并进行了结构表征和性能研究．以甲基丙烯酸甲酯（MMA）为杂化材料的主要成分，引入甲基丙烯酸丁酯（BMA）以改变PMMA／TiO2杂化材料易碎的缺点．实验结果表明：杂化材料中无机相与有机相通过Si-O-Ti共价键相连，TiO2的加入增强了聚合物材料的抗紫外性．     

银锌复合透明抗菌薄膜的制备及其性能研究

采用sol—gel法，以正硅酸乙酯（Si（OC2H5）4）作为反应的前驱体，硝酸锌、硝酸银为抗菌活性成分，柠檬酸为配合剂，无水乙醇为溶剂，HNO3为催化剂，通过浸渍提拉法在普通的玻璃基片上制备银锌复合薄膜，用扫描电镜（SEM）和紫外可见光谱（UV-Vis）对薄膜进行了表征，抑菌圈法评价银锌复合薄膜的抗菌性能，结果表明：透明的银锌复合薄膜具有优良的抗菌性能。     

新型偶氮卟啉荧光化合物的合成、表征及光谱性质

以对氨基苹甲醛和苯酚（或蔡酚）为原料通过重氮化和偶合反应合成偶氟醛，偶氮醛与吡咯反应得到2种新型偶氮卟啉——四对（4-羟基偶氮苯基）苯基卟啉（3）和四对（2-羟基偶氮萘基）苯基卟啉（4）．通过核磁氢谱、红外和质谱对其结构进行了表征，研究了紫外和荧光光谱性质，并与无取代的四苯基卟啉的光谱性质进行了比较．新化合物紫外吸收有红移现象，且能在红光区发射荧光．化合物4的荧光光谱有较大红移，且在851nm处发现荧光发射峰．     

纳米氧化锌的微乳液法制备及表征

纳米ZnO可用于毛织物的后整理，使织物具有抗菌除臭、消毒、抗紫外线的功能．采用TritonX-100／正庚醇／正辛烷／盐水微乳液体系，以一定盐浓度的硝酸锌（Zn（NO3）2）水溶液（A）与碳酸钠（Na2CO3）水溶液（B），通过两个乳液混合的方法，制备出氧化锌超细微粒．并用差热分析（DTA）、透射电镜（TEM）和X射线衍射仪对其进行表征分析．实验表明，30℃时，以A型微乳液与B型微乳液通过乳液混合搅拌的反应方式制备出纳米ZnO微粒的前驱体，经80℃真空干、燥约5h后，在350℃下煅烧2h，得到了平均粒径约为10nm的超细ZnO粉末，且微粒粒径分布均匀、团聚少，多数为球状颗粒．     

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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