海泡石的化学成分研究

本文通过两种不同成因海泡石化学成分特征的研究发现，热液型海泡石和沉积型海泡石的化学组成有较大差异，热液型纤维状海泡石ＭｇＯ、ＳｉＯ２含量高，Ａｌ２Ｏ３含量低，为富镁海泡石；沉积型粘土状海泡石ＭｇＯ、ＳｉＯ２含量低，Ａｌ２Ｏ３含量高，为富铝海泡石。而且，两种不同成因的海泡石结晶形态的差异与其化学组成密切相关；热液型海泡石Ｍｇ２＋、Ｓｉ４＋高，Ａｌ３＋低，接近理想值，易结晶形成长纤维状；而沉型积海泡石Ｍｇ２＋、Ｓｉ４＋较低，Ａｌ３＋高，结晶颗粒细小，为粘土状，但在电镜下观察仍呈纤维状。     

海泡石晶体结构的超细效应研究

本文在对海泡石进行超细加工和粒度分析的基础上，利用Ｘ射线分析、红外光谱分析研究了高速气流对撞冲击式超细加工对海泡石的晶体结构所产生的影响。研究发现：高速气流对撞冲击式超细粉碎在完成海泡石纤维束分离的同时，也将对海泡石的晶体结构产生一定的破坏作用，导致海泡石的晶胞参数ａ、ｂ的减小，基本结构单元间以连接点为支点发生一定程度的旋转，从而产生结构孔道畸变。     

海泡石对有机染料吸附作用的研究

本文研究了海泡石在水相中对有机染料的吸附作用，考察了海泡石粒度，溶液的ＰＨ、温度及吸附时间对海泡石吸附有机染料的吸附率的影响，测定了５种有机染料水溶液的吸附等温线，获得了一些有用的数据，为海泡石应用于处理印染废水提供了依据。     

改性海泡石填充不饱和聚酯复合材料的热性能研究

采用表面活性剂对海泡石进行改性，用DTA分析研究了改性剂种类及海泡石用量对不饱和聚酯复合材料热性能的影响．试验结果表明，海泡石的加入可显著改善不饱和聚酯复合材料的热性能，且阳离子表面活性剂改性海泡石填充效果较好．海泡石的最佳用量在8％-11％左右．     

高温氧气流改性海泡石处理印染废水性能及再生研究

本文采用高温氧气流改性和再生天然海泡石，研究了改性海泡石(H/海泡石)吸附去除模拟印染废水中碱性嫩黄O染料及其再生的性能，以及H/海泡石静态吸附碱性嫩黄O的特点，采用相关模型拟合，考察了高径比(填料高度与吸附柱内径的比值)、染料溶液流速和浓度对H/海泡石动态吸附的影响。结果表明，改性温度和时间分别为550℃和1 h,氧气流速为6 L/min得到的改性海泡石的单位吸附量超过200 mg/g; Langmuir等温吸附方程、准一级动力学方程分别符合H/海泡石的吸附行为、吸附动力学；高径比为2.5,染料流速为每小时6倍床体积，染料初始浓度为200 mg/L时，H/海泡石分别能处理的废水量约为55、42和45倍床体积；采用高温氧气流对吸附饱和的H/海泡石进行再生，再生温度和时间分别为550℃和20 min,再生氧气流速为6 L/min时，再生率接近100%。     

几种阳离子交换剂对纤状海泡石溶血能力的影响

本文对源于湖北广济的纤状海泡石矿通过用几种阳离子交换剂处理后，测定处理前后的纤状海泡石的溶血率，ＭＤＡ的变化以及对人体红细胞毒性的影响，发现ＮＨ＋４ ，Ｎａ＋ ，Ｋ＋ ，Ｃａ２＋ 处理纤状海泡石对人体红细胞毒性明显下降。因此认为纤状海泡石的红细胞毒性可能与脂质过氧化有关     

低温等离子体协同CuO/海泡石催化脱除NO

采用硝酸浸泡和硝酸铜改性海泡石并经高温煅烧,制得改性海泡石催化剂协同介质阻挡放电反应器产生的低温等离子体脱除NO。通过XRD分析发现海泡石原矿经硝酸洗涤可有效去除其中Mg以及其他以不同化合物形态出现的杂质,海泡石原矿经酸洗提纯、浸渍硝酸铜溶液、干燥、煅烧等工艺过程处理可在载体表面形成稳定的CuO物相,并且海泡石基本结构没有发生明显变化,证明海泡石结构稳定,是良好的催化剂载体。通过SEM测定表明酸洗可有效增加海泡石孔道截面和孔道数,增大其比表面积;并且活性组分均匀分布在催化剂表面及孔道中,在负载量适中时未发现较大聚集颗粒。证明改性海泡石催化剂协同低温等离子体对NO具有良好的脱除效果。     

新康海泡石富镁特征的研究

新康海泡石中MgO含量高达26％左右,明显高于广济、全椒、浏阳及国外海泡石中MgO的含量。Ms~(2+)占据全部八面体位置后,仍有0.133-0.318的镁离子剩余。新康海泡石是富镁海泡石变种?还是混有少量蛇纹石或是有其它富镁杂质?我们通过人工配比混合样及不同产地海泡石的X射线衍射分析,配合热处理样品X射线分析,以及物理性能测试研究,证实新康海泡石是富镁海泡石变种,结晶度差,但热稳定性高,比表面和阳离子交换容量均较大。海泡石中MgO的含量与其成矿地质条件有关,新康富镁海泡石是产于超镁铁质岩型蛇纹岩体风化带裂隙中的次生矿物,成矿母岩的富镁低钙特征是生成富镁海泡石的基本条件。     

CuO-海泡石/PMMA-PEG复合凝胶聚合物电解质的制备与性能

通过沉淀法合成了CuO-海泡石,再经溶液浇注法得到不同含量CuO-海泡石掺杂的PMMA-PEG基复合凝胶电解质膜。采用扫描电镜观察、X射线衍射分析、红外光谱、热重和电化学阻抗手段对复合凝胶电解质膜的结构和电化学性能进行了测试。结果表明,复合聚合物膜表面呈多孔状,且CuO-海泡石在复合聚合物膜中实现了良好分散。随着CuO-海泡石含量增加,复合凝胶电解质膜的电导率增高,热稳定性也明显提高。     

非金属矿物纤维制作汽车尾气净化器衬垫的研究

采用与传统干法生产工艺不同的湿法造纸工艺，以非金属矿物纤维海泡石为主要纤维原料配加玻璃纤维、陶瓷纤维、有机纤维生产净化器衬垫．结果表明：以非金属矿物纤维海泡石为主要纤维原料制作的净化器衬垫具有较好的物理性能．     

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~~