均相和非均相Fenton型催化剂催化氧化含酚废水

研究了均相和非均相Penton型催化剂催化氧化含酚废水．对均相催化氧化反应进行正交试验和单因数试验，确定其氧化降解特定废水的最优化条件．在Fenton反应机理的基础上，探讨了Fe^3 在均相和非均相条件下的催化氧化机理；制备了Fe^3 ／人造沸石和Fe^3 ／活性炭催化剂；进行了非均相催化氧化降解高浓度含酚废水的试验；比较了均相和非均相催化氧化反应对苯酚降解率的影响．结果发现非均相反应能大大提高苯酚降解率，使用Fe^3 ／活性炭为催化剂时可使苯酚的降解率达到93．02％．     

催化湿式氧化法处理含酚废水

进行了CuO／A12O3、CuO-MnO2／Al2O3、CuO-K2O／Al2O3、CuO／CeO2催化剂在160℃和1．6MPa的氧气压力条件下，催化氧化法处理含酚废水的实验，结果表明催化剂CuO／CeO2具有最高的催化活性，COD为3000ms／L左右含酚废水，反应50min后降解97％。并测定了在135～165℃和1.6MPa氧气压力下。加入催化剂CuO／Al2O3氧化含酚废水的COD与时间的的关系，求取了反应的动力学方程。初步探讨了氧分压和溶液的pH对催化氧化反应速率的影响。     

过氧化氢催化氧化处理含氯酚废水的研究

以有机化合物氯酚（ＤＯＣ）为模拟废水,在铁禽子催化剂参与下,用Ｈ２Ｏ２催化氧化氯酚。实验结果表明：在铁离子催化下,Ｈ２Ｏ２可以迅速分解产生羟基自由基,羟基自由基能在很短的时间内将氯酚迅速氧化分解,反应１０ｍｉｎ后已测不出反应液中所含氯酚。最终ＣＯＤ的去除率在８０％以上,Ｈ２Ｏ２浓度、催化剂浓度、溶液的ｐＨ值等因素对ＣＯＤ的去除率均有影响。     

SnO2电极电催化降解废水中酚

采用掺锑的ＳｎＯ２粉制成的半导体电极,研究了含酸废水的电催化降解反应。结果表明,在适当的条件下,对酚的降解率可达９０％。     

水相中酚的催化氧化脱除

制备了一组离子交换蒙脱石催化剂样品，并以水相中苯酚的氧化降解为探针反应，评价和考察了样品的活性及主要影响因素结果表明，在温和条件下，全部样品均有催化活性，其中Ｎｉ＾２＋－交换蒙脱石的活性最为突出，对于含酚工业废水的治理，以Ｎｉ＾２＋－交换蒙脱石为催化剂的湿式催化氧化法（ＣＷＡＯ）具有潜在实用价值。     

Cu-ZSM-5催化降解含酚废水反应条件的研究

酚类化合物是工业废水中常见的高毒性、难降解有机物.本文研究了利用Cu-ZSM-5分子筛催化降解含酚废水的条件,详细考查了pH值、反应温度、催化剂用量、焙烧温度以及催化剂的反应时间等因素的影响,并优化了反应条件.研究显示:当pH为4.5、反应温度160℃、催化剂最佳用量1.8g/L、焙烧温度420℃、反应进行1h时,含酚废水的COD去除率为99.2%.     

稳定性二氧化氯应用研究——除废水中酚

通过实验,测定了在标准苯酚中用不同体积分数的二氧化氯,在不同温度、作用不同时间后的除酚效果,得出在２５℃左右,达到排污标准最佳条件为φ（ＣｌＯ２）为１／１００００,作用时间为３～４ｈ,φ（ＣｌＯ２）为１．５／１００００,２～３ｈ;在３５℃左右,相应１／１００００时为２～３ｈ;这样含酚废水不必做质量浓度上的特殊处理,可根据温度不同调整二氧化氯体积分数和作用时间。并根据此结果测定了不同φ（ＣｌＯ２）除废水中酚的实际效果。结果显示,此法适于含酚较低的废水除酚和作为含酚较高的废水的三级处理     

催化湿式氧化处理香料废水

采用催化湿式氧化技术处理上海香料厂排放的高浓度有机废水。使用本实验室自制的催化剂，在中温（约１６０℃）和中压（约３．０ＭＰａ）条件下，试验了高浓度香料废水的湿式氧化行为。试验结果表明，香料废水经３０ｍｉｎ的湿式氧化处理，其ＣＯＤ、ＴＯＣ和色度的去除效率分别达到６９．１％、７４．８％和７９．５％。对香料废水湿式氧化处理前后可生物降解性能的试验证明，经３０ｍｉｎ催化湿式氧化处理后，废水的可生物降解性能     

用光化学方法去除废水中的有害有机物和金属

研究了一些有机物，如丙酮，酚，染料和茶皂角甙的光催化降解，结果表明：酚的降解与文献报导的情况基本相同，在催化剂TiO2的作用下，紫外光能有效降解纺织厂的印染废水中的染料；金属化合物对光降解反应具有很大影响；还首次试验了用光催化原理消除茶皂甙中有毒溶血素的方法。     

液膜法净化油区污水中低浓度酚的研究

采用ＬＭＳ－２－液体石蜡－煤油－ＮａＯＨ液膜体系，确定了净化污水中低浓度酚的各种实验条件，并对油区废水进行了净化处理试验，研究结果表明，本法适用于低浓度含酚废水的处理，一级处理除酚率达９５％。该技术经济实用，具有工业应用价值。     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~