臭氧-生物填料污水处理工艺性能优化研究

臭氧一生物填料塔工艺在石油化工废水深度处理中被广泛应用，通过对石化企业外排污水进行深度处理，研究臭氧-生物填料联合工艺的处理效果及影响因素。同时控制单因子臭氧投加量、气水比，确定臭氧塔最优操作条件，选用三种填料：生物陶粒、活性碳、WD-20型生物填料，通过对填料性能的分析研究，优选填料及填料塔最佳操作条件。     

萃取塔中4种塔填料的流体力学性能比较

在Φ120mm不锈钢填料塔中，以Φ16mm共轭环塔填料为研究对象，选用正丁醇-丁二酸-水体系进行试验，测定了该填料的分散相存留分数与两相（分散相与连续相）流率的关系以及填料的液泛速度，并与相同条件上不同尺寸鲍尔环、拉西环和θ环填料的测定结果作了比较，研究表明，与其他三种填料相比，共轭环填料具有优异的流体力学性能。     

聚合物复合材料中填料的表面处理

介绍了填料的种类和相对应的功能效果，介绍聚合物填料改性的最新研究进展，包括采用表面活性剂、偶联剂、低聚物、等离子体处理填料表面和纳米材料作为填料的技术。     

新组合填料塔中亏氧清水与餐厅污水的氧传递

根据污水处理所用填料的技术特征，自行开发研制了一种新型组合填料，通过平行实验测定了亏氧清水中该组合填料和其他3种填料塔的氧液相体积传质系数，并进行了比较，结果表明该组合填料具有优良的氧传递性能，对实验结果进行回归分析，得到4种填料氧传质系数的计算式。其计算值与实测值基本吻合，最后对同种填料在相同操作条件下，对亏氧清水和餐厅污水中的氧传递实测结果进行了比较，结果表明餐厅污水中的氧传质系数小于亏氧清水中的氧传质系数。     

填料在曝气生物滤池中的应用与研究进展

曝气生物滤池曝气生物滤池是一种新型的水处理工艺，而填料作为曝气生物滤池最关键影响因素引起广泛关注。文章简单介绍了曝气生物滤池填料的类型及相应特点，分析了填料对曝气生物滤池处理效果的影响，以及几种新型填料的应用情况，鼻提未了填料今后的发展方向。     

碳钢塔填料化学镀镍后的防腐及润湿性能研究

通过对经化学镀镍处理后的碳钢塔填料与同规格的不锈钢塔填料进行对比试验，研究其耐腐蚀性能和润湿性能。试验结果表明，碳钢塔填料经化学镀镍后，具有良好的耐腐蚀性和润湿性能，可替代不锈钢塔填料在生产中使用。     

密封填料的粘弹性及其力学模型

在综合分析了密封填料的弹性恢复，弹性后效，粘性流动及应力松弛等粘弹性的基础上，建立了反映密封填料粘弹性的力学模型，得出应力－应变关系的本构方程。这有助于探讨密封填料在动态工作条件下其粘弹特性各个方面的变化特征以及对密封性能的影响，有助于实现软填料密封的研究由宏观特性向微观机理的转变，有助于开发综合特性优良的密封填料。     

广东生益科技股份有限公司：解决高填料含量板材铜箔粘合力低的问题

1课题摘要
　　电子行业的无铅环保要求，推动了填料在覆铜板行业中的应用，使用填料技术已成为提升覆铜板性能的重要手段，填料在覆铜板行业应用的发展趋势是其含量的不断提升。由于填料表面为惰性，填料含量的提升会造成铜箔与热固性树脂组合物的粘合力下降，这是本行业普遍存在的难题。
　　本论文采用创新方法，打破惯性思维，发明了一种非均匀的复合材料的制作方法和工艺。利用一种二次上胶工艺，获得一种填料集中在中间，树脂集中在表层的特殊结构覆铜板，从根本上解决了无机填料对铜箔粘合力的影响。
　　该方法已申请中国专利1篇、PCT专利1篇；相关的方法和工艺经过大规模工程化验证证明此法可行，并已在产品中获得应用，取得了良好的社会和经济效益。     

醋酸介质中T-403塔不锈钢填料腐蚀机理研究

某化工厂PTA装置氧化单元系统中铁离子含量增高，已影响到氧化反应效果，严重威胁稳定生产，分析认为铁离子主要来自T-403溶剂回收塔316L不锈钢填料的腐蚀．利用扫描电镜、电子探针、金相显微镜等现代物理和化学分析检测手段，观察了从T-403塔取出填料的微观形貌，测试分析了所用填料的主要化学成分及元素分布，对比了未使用和已腐蚀填料的金相显微结构、力学性能变化，研究分析了不锈钢填料的腐蚀机理．实验结果表明：不锈钢填料发生了严重的局部腐蚀，腐蚀形态为晶间腐蚀和小孔腐蚀．填料发生腐蚀后，强度和硬度明显降低．测试分析结果证明，贫铬导致晶间腐蚀，Br以及不锈钢钝化膜局部破损造成蚀孔．原填料质量存在问题，不锈钢填料的含碳量未达到超低碳316L不锈钢的标准．     

DN50塑料异型矩鞍填料的流体力学及传质性能

开发出了一种塑料散装填料——异型矩鞍填料．在内径中300mm塔中，以空气-氨-水为物系，对DN50塑料异型矩鞍填料的流体力学及传质性能进行了研究．获得了该填料的几何特性、流体力学性能及传质性能数据、通过对实验数据的回归分析，得出了填料层压降、泛点填料因子和压降填料因子、填料层持液量、气相总传质单元高度和总体积传质系数的关联式．研究结果表明，塑料异型矩鞍填料具有通量大、压降低、气液分布均匀及传质性能优良等优点．该研究结果对工程设计有参考价值、     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to