自来水厂新型净水剂聚合氯化铁的研究

分析了聚合氯化铁的成分，并处理了印染废水。在不同条件下测经处理前后废水的吸光度，计算脱色率，寻找该净水剂的最佳净水条件。实验表明在常温下该净水剂浓度为0．0104mol/L,pH值为8，沉降1h净水效果较好。     

凹凸棒石型净水剂处理印染废水的研究

本文介绍了凹凸棒石型净水剂处理印染废水的基本原理,研究了凹凸棒石型净水剂处理印染废水的影响因素,确定了粉状凹凸棒石型冷水剂的最佳处理条件。     

聚合铁铝净水剂的开发与试用

通过对用高岭土制备聚合铁铝净水剂与其它净水剂对选煤污水的对比处理研究 ,并给出了聚合铁铝净水剂与其它净水剂对选煤污水的对比处理结果 ,分析了用高岭土制备聚合铁铝净水剂的经济指标。     

天然植物辣木籽对水体净化作用的研究

文章对辣木籽天然净水剂与常用化学净水剂明矾、聚合氯化铝等净水效果进行比较研究,结果表明:辣木籽有较明显的净水效果,净水效率与聚合氯化铝相当;确定辣木籽净水最佳剂量为100mg/L;辣木籽粗提取液有良好净水效果,但水体中有机物含量有所增加;利用不同倍数蒸馏水与NaCl溶液对辣木籽进行处理,10倍NaCl溶液提取辣木籽,降低浊度的效果明显,同时高锰酸盐指数并未增加,采用不同盐溶液提取辣木籽,对水体浊度去除效果相当。因此,辣木籽作为天然净水剂具有较好的潜在应用价值。     

利用煤矸石制备聚合铁铝净水剂的研究

利用煤矸石为原料,研究了制备复合铁铝净水剂的最佳工艺条件,从而制得了效果良好的新型净水剂。     

风化煤粒状净水剂在印染废水处理中的应用（Ⅱ）

系统地测定了风化煤粒状净水剂对常用的活性染料、分散染料、直接染料、士林染料、硫化染料、纳夫妥六大类染料废水的吸附脱色率及最佳吸收 波长,证实了该净水剂对各种染料 的脱色率均可达８０％以上。并进上步探讨了其吸附动力学特征,为实现ＨＡ净水剂的工业化应用奠定了基础。     

风化煤粒状净水剂在印染废水处理中的应用（Ⅰ）

用四川南桐风化煤制成粒状腐植酸类净水剂，测定了它对印染废水的静态吸附特性，按优化条件处理印染废水，其脱色率和ＣＯＤｃＴ去除率均可达７５％。     

新型净水剂-JH-103低铁高效净水剂的研制

低铁高效净水剂“JH-103”,经对不同原水浊度混凝试验和最佳用药成本计算显示具有用药量少、制水成本低和净水效果优良的特点。在性能和使用效果上均优于聚合硫酸铁、聚合氯化铝、聚合氯化铝铁等无机高分子絮凝剂,是一种新型净水剂。     

壳聚糖净水剂对Cr(Ⅵ)的吸附研究

研究了壳聚糖净水剂在不同浓度、温度、ｐＨ的条件下，自水溶液中吸附铬（Ⅵ）的特性．结果表明：固体壳聚糖净水剂对Ｃｒ６＋有一定的吸附能力，是一种有效的螯合剂，具有较强的螯合和吸附作用，能有效地从工业废水中吸附造成环境污染的重金属离子，是一种有研究前景的应用于废水净化的固态制剂     

复合铝铁锌净水剂的制备及混凝效果

用镀铝铁锌渣制备净水剂,达到以废治废的目的,并采用L9(34)正交试验法研究制备该净水剂的条件,探讨硫酸、盐酸的用量和pH值等条件对净水剂净水效果的影响.结果表明:在w=38%的盐酸用量为30mL,pH值为4.0的最佳条件下,净水剂对浊度的去除率可达98.2%,对色度去除率达到96.7%.     

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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