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。     

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。     

复合流人工湿地对生活污水深度处理的应用研究

采用复合流人工湿地对经二级处理后的生活污水进行深度处理,结果表明,复合流人工湿地对生活污水具有良好的深度净化作用,对NH3-N、TP、COD、BOD5的去除率分别达到72%、60%、80%和76%,出水水质基本达到了国家地表水Ⅲ类标准.     

厌氧－好氧一体化污水净化装置处理生活污水的试验研究

厌氧－好氧一体化污水净化装置处理生活污水的试验研究周琪，顾国维，赵建夫朱文龙，陈伟德作者研究了厌氧一好氧一体化污水净化装置处理生活污水的启动及运行特性，试验表明装置在自接种条件下启动，二周内可达到稳定的处理效果，出水ＣＯＤ＜１００ｍｇ·Ｌ－１．正常运...     

用正交试验法优化湿法磷酸制取磷酸脲的研究

本研究以工业级湿法磷酸和工业尿素为原料合成磷酸脲，采用在反应体系中加入一种高效的反应活化剂RX-Ⅲ，简化了复杂的净化处理工序，提高了磷酸脲晶体的纯度。试验采用正交试验方法对合成工艺进行了优化实验，探索出了较为适宜的用湿法磷酸悬乳净化法合成磷酸脲的工艺条件。     

应用生态土壤深度处理技术脱氮除磷的研究

介绍了生态土壤深度处理技术的结构、技术要求和净化机理。试验和工程实例研究表明，该技术对生活污水具有良好的净化效果，对NH3-N，TP，CODCr，BOD5和SS的去除率分别达到87．4％，91．5％，87．9％，92．8％和94．9％，尤其脱氮除磷效果优于一般二级处理。     

不同类型湿地对城市污水净化能力的比较研究

为了研究在实际应用中使得污水净化效果最佳的湿地形式,对两组不同形式的人工湿地对城市污水的净化能力进行了比较。通过对两组湿地中各个水质指标的检测发现:两组人工湿地对TN、TP、浊度、CODMn的去除率分别为40%、96%、93%、53%和26%、83%、90%、60%,除了TN外,其他出水水质指标均达到GB 18918—2002的二级排放标准;砾石基质的人工湿地适合处理磷含量高的污水,但不适合处理氮含量高的污水,为使得氮含量达到城镇污水污染物排放标准,建议引入沸石基质,和砾石基质一起作为组合基质,或者引入去氮能力强的植物。     

以BOT模式建设并运行污水处理厂工程实例

武汉某污水处理厂采用前置厌氧氧化沟工艺对污水进行二级生化处理。运行近一年出水氨氮及总磷一直未能达标，该文分析了造成出水不达标的主要原因，并对BOT运营模式进行了探讨。     

城市生活污水处理工艺效能评价及优化对策——以金华沼气净化池为例

我国城市生活污水处理现状中存在的一些问题出发，介绍了金华市推广使用沼气净化池的概况．通过2004至2005年间在5个沼气净化池出水口进行24次取样水质检测，并使用模糊数学方法对其污水处理效能作出评价．结果表明：沼气净化池出水中的BODs和SS指标达到国家污水综合排放标注一级标准，CODCx达到国家二级排放标准，但NH3-N没有达到国家二级排放标准．今后应当从改良池型、优化微环境、改造微生物等方面着手，提高沼气净化池净化及产气功能，使这种分散处理污水的方式与集中处理方式共同作用，在大中城市的污水处理中发挥更大的作用．     

高效藻类塘处理太湖地区农村生活污水研究

对高效藻类塘处理太湖地区农村生活污水进行了试验研究，系统水力停留时问为夏季4d、冬季8d．结果表明：高效藻类塘出水化学需氧量（COD）的质量浓度受藻类生长影响较大，但出水溶解性COD的质量浓度比较稳定，平均去除率在70％以上．氨氮的去除效果好，平均去除率为93％，氨氮主要通过硝化、挥发和生物同化吸收三种途径去除．塘内磷主要通过沉淀去除，总磷平均去除率在50％左右．冬季水力停留时间的延长对保障系统的整体运行效果是有效的．高效藻类塘用来处理太湖地区农村生活污水具有一定的应用前景．     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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