油田高温采出水生化处理研究

针对胜利油田乐安油田56～60℃高温含油采出水,筛选出高效降解石油污染物的高温功能菌,采用生物接触氧化工艺实现该油田采出水生化处理,处理后污水达到国家污水综合排放标准中的一级排放标准。     

油田含聚合物污水外排处理技术室内模拟研究

聚合物驱油技术大面积应用的同时也产生了含聚丙烯酰胺污水的处理问题.含聚污水具有粘度大、含油多、乳化稳定的特点,传统的污水处理方法及设施难以使该污水处理达到外排水水质的标准.用气浮+生物接触氧化法对孤岛油田含聚污水进行处理,首先利用气浮去除悬浮油和大部分聚合物,然后利用生物接触氧化膜上的烃类降解菌和聚丙烯酰胺降解菌组成的高效降解菌群的生物降解作用去除乳化油和残余的聚合物.研究结果表明:孤岛含聚污水经气浮+生物接触氧化法处理后含油量由300mg·L-1以上降至4mg·L-1以下,CODCr由1 700 mg·L-1以上降至100 mg·L-1以下,聚丙烯酰胺的含量由40 mg·L-1以上降到1.5 mg·L-1以下.出水水质完全达到国标GB8978-1996<污水综合排放标准>规定的一级排放标准.     

生物接触氧化工艺在水处理中的应用研究及展望

生物接触氧化工艺作为一种处理效果好,运行稳定的水处理技术,被广泛的应用于生活污水、工艺废水及微污染水源水处理。介绍了生物接触氧化法的性质和特点,以及该工艺在我国的研究和应用,并对其未来的发展趋势和可能改进的方向做了分析和展望。     

生物过滤处理微污染水机理分析

利用生物过滤处理微污染原水,分析了生物膜特性和生物相,对生物膜去除有机物、氨氮、铁、锰等的机理和生物膜净化作用特征进行研究.微污染原水中的氨氮和有机物是通过吸附、吸收、代谢、排出而得到去除的,其去除率分别为88%和30%,对铁的去除主要是接触氧化和生物的共同作用的结果,其去除率可达到94%以上,对锰的去除主要是依靠锰氧化细菌的催化作用,其去除率在90%以上.     

阿特拉津降解菌的生长与降解特征研究

从农药厂生产车间污泥中分离出菌种AT菌,进行了菌种生长曲线的测定,求得AT菌的对数期代时为3.87 d,生长速率为0.258 d-1;不同的温度条件下污染质阿特拉津的降解实验表明,在4～20℃的实验温度范围内,AT菌能够降解代谢污染物质,并随温度的升高,降解能力增强.20℃时降解率为38.84%.同时环境因素也随着AT菌作用而变化,其中pH随AT菌作用加强和减弱有下降和回升的过程.     

硝基苯降解菌筛选和鉴定

微生物法处理硝基苯废水是较理想的方法。从吉林市某化工厂的排污口的江底底泥采样,以硝基苯为底物,在好氧条件下,经过长时间的驯化、筛选,成功地分离出了4株对硝基苯有较强耐受力的高效降解菌,经鉴定为假单胞杆菌属(Planococcus Migula)、动性球菌属(Pseudomonas Migula)。研究结果表明,在好氧条件下它们能把硝基苯作为惟一的碳源并对硝基苯有较强的生物降解能力;通过驯化可以使降解菌对硝基苯的降解能力有较大地提高。     

微污源原水的生物接触氧化预处理技术研究

水资源被广泛污染，微污染原水在水厂加氯消毒过程中易形成三卤甲烷类可疑致癌物，自来水水质威胁着饮用安全，传统净水工艺必须变革，以适应处理微污染原水的需要，合理设计的生物接触氧化池，能经济有效地显著降低微污染原水中的氨氦、亚硝酸氮、ＣＯＤ、ＴＯＣ、浑浊度、铁、锰和酚等含量。Ａｍｅｓ致突变试验呈阳性的微污染原水，经过生物接触氧化预处理和合理的后续深度处理，能净化处理成Ａｍｅｓ试验呈阴性的安全卫生饮用水，     

接触辉光放电等离子体降解水体中的对氯硝基苯

接触辉光放电电解是一种新型的产生等离子体的电化学方法 .实验表明 ,利用该方法可将水体中的对氯硝基苯全部氧化为二氧化碳 .电压、浓度、催化剂对降解率有显著影响 ,pH值对降解无明显影响 .利用高效液相色谱检测了中间产物 ,推测了对氯硝基苯在接触辉光放电降解过程中的机理     

一组高温混合菌对木质素纤维素的降解

对秸秆中木质素纤维素的生物预处理进行研究.采用高温混合菌对滤纸和玉米秸秆进行降解实验.在50℃,第7天滤纸失重率为76.2%;第30天玉米秆失重率为34.23%,玉米秸秆中木质素、纤维素和半纤维素的降解率分别为56.36%,42.88%,62.77%.混合菌在50℃条件下对玉米秸秆中的木质素、纤维素、半纤维素均有较高的降解效果.     

微污染原水的生物接触氧化预处理技术研究

水资源被广泛污染，微污染原水在水厂加氯消毒过程中易形成三卤甲烷类可疑致癌物，自来水水质威胁着饮用安全．传统净水工艺必须变革，以适应处理微污染原水的需要．合理设计的生物接触氧化池，能经济有效地显著降低微污染原水中的氨氮、亚硝酸氮、ＣＯＤ、ＴＯＣ、浑浊度、铁、锰和酚等含量．Ａｍｅｓ致突变试验呈阳性的微污染原水，经过生物接触氧化预处理和合理的后续深度处理，能净化处理成Ａｍｅｓ试验呈阴性的安全卫生饮用水，对促进给水事业发展和缓解水资源矛盾，具有普遍和重大的现实意义．     

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     

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