厌氧颗粒污泥流化床处理有机废水的运行特性

提出了厌氧颗粒污泥流化床工艺（简称ＡＧＳＦＢ）．在成功培养出颗粒污泥的基础上,以葡萄糖为基质,全面探讨了ＡＧＳＦＢ处理有机废水的运行效果、产气率、污泥表观产率系数及反应器的耐冲击性能等．结果表明,ＡＧＳＦＢ反应器具有很高的处理效率．水力停留时间ＨＲＴ为４９ｈ,进水化学需氧量ＣＯＤｃｒ＝３２４０ｇ／Ｌ,有机负荷为１５９ｋｇ／（ｍ３·ｄ）时,反应器的有机物去除率仍保持在７５６％以上．ＡＧＳＦＢ对温度降低、负荷提高、短期的低ｐＨ值和有机酸冲击均表现出良好的耐受能力     

分光光度法测定土壤及废水中铬

在ｐＨ５．４ＨＡｃ－ＮａＡｃ缓冲溶液中，Ｃｒ（Ⅵ）与苯基荧光酮（ＰＦ）在溴化十六烷基三甲基铵（ＣＴＭＡＢ）存在下生成络合比为１：２的紫红色配合物，此配合物最大吸收波长λｍａｘ位于５８２ｎｍ，络合物的表现摩尔吸光系数为εｍａｘ＝８．０９×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，Ｃｒ（Ⅵ）含量在０ｇ／Ｌ～２．８×１０ˉ４ｇ／Ｌ范围遵守比尔定律。     

催化分光光度法测定痕量铜(Ⅱ)的研究

在稀氨水溶液中,以ＫＣｌ溶液为活化剂,过氧化氢与溴甲酚紫的氧化还原反应多铜（Ⅱ）催化,而使吸光度值降低,据此建立了痕量铜的新催化动力学光度法。方法的摩尔吸光系数为５２８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,检出限为４４４×１０－９ｇ／ｍＬ,线性范围为０～０６μｇ／２５ｍＬ,已用于桂林风景点水中痕量铜（Ⅱ）的测定,结果满意。     

苯基氮杂-15-冠-5-八钼多酸钠超分子配合物的结构与热分解

本文对新型超分子配合物［Ｎａ（ＮＰｈ）１５Ｃ５（Ｅｔ２Ｏ）］２Ｎａ２Ｍｏ８Ｏ２６进行了Ｘ射线四园衍射测定,该晶体属单斜晶系,空间群为Ｐ２１／ｃ,ａ＝１７８０３（４）,ｂ＝１３６７４（３）,ｃ＝１４６１０（３）,β＝１１２３３（２）°,Ｖ＝３２９０（１）ｎｍ３,Ｍｒ＝２０２１３,Ｄｃ＝２１４ｇ／ｃｍ３,μ＝１７１ｍｍ－１,Ｆ（０００）＝２０７９６３,Ｒ＝００２５６和Ｒｗ＝００２９５,并联系差热热重分析和１ＨＮＭＲ实验,讨论了配合物的热分解过程．     

MgO中Cr~(3+)空位中心的电子顺磁共振分析

本文采用晶场理论,计算了ＭｇＯ中Ｃｒ３＋空位中心Ｃ４ｖ、对称四角畸变的能级和ＥＰＲ（电子顺磁共振）参量ｇ＝１．９８２４,ｇ⊥＝１．９８０８和Ｄ＝－８１１×１０－４ｃｍ－１,得到了与实验（ｇ＝１．９７８７±０．０００６,ｇ⊥＝１．９８２７±０．０００６和Ｄ＝－８１９×１０－４ｃｍ－１）一致的结果,解释了ｇ因子各向异性的起因．     

罗丹明6G·四溴荧光素等色染料离子对浮选光度法测定金

提出了等色染料离子对浮选光度法。向罗丹明６Ｇ（Ｒ６Ｇ）和ＡｕＢｒ－４的甲苯萃取物Ｒ６ＧＡｕＢｒ４中,加入ｐＨ＝５５的（ＮＨ４Ａｃ－ＨＡｃ）缓冲溶液,使Ｒ６Ｇ离子进入水相,并向其中加入与Ｒ６Ｇ颜色相同的四溴荧光素（ＴＢＦ）,形成等色染料离子对Ｒ６Ｇ＋·ＴＢＦ－被甲苯浮选。将浮选物溶于丙酮,于５３０ｎｍ处光度测定。由于２个染料分子（Ａｕ∶Ｒ６Ｇ∶ＴＢＦ＝１∶１∶１）同时吸光,方法具有很高的灵敏度,ε＝２０×１０５Ｌ·ｍｏｌ－１·ｃｍ－１;金含量在０～０３６ｍｇ／Ｌ服从比耳定律,相对标准偏差为２９％,方法应用于粗铜中金的测定,结果满意。     

非离子型微乳液对铜─二甲酚橙分光光度分析的增敏作用

以含水量为９４．１％的非离子型乳化剂ＯＰ／ｎ－Ｃ５Ｈ１１ＯＨ／ｎ－Ｃ９Ｈ２０／Ｈ２Ｏ微乳液为介质，进行了Ｃｕ（１１）－二甲酚橙ＯＸ分光光度法研究（ε＝３．６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１），与以水为介质（ε＝５．２×１０３Ｌ·ｍｏｌ－１·ｃｍ－１）及相同含水量的乳化剂ＯＰ胶束介质（ε＝１．１４×１０４Ｌ·ｍｏｌ－１·ｃｍ－１）相比较，测定灵敏度显著增加，样品分析结果令人满意。     

单宁酸分光光度法测微量银

在碱性介质中单宁酸与银离子生成亮黄透明的络合物溶液。本文着重研究单宁酸与银离子的显色条件，并建立了测定Ａｇ＋的新方法，络合物的ε＝１．８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，λｍａｘ＝４１５ｎｍ，线性范围：０～８５μｇ／ｍｌ。本文已用于测定废水中Ａｇ＋，结果满意。     

Pb（Ⅱ）、Zn（Ⅱ）与5－Br－PADAP络合平衡的研究

本文研究了Ｐｂ（Ⅱ）－５－Ｂｒ－ＰＡＤＡＰ及Ｚｎ（Ⅱ）－５－Ｂｒ－ＰＡＤＡＰ络合反应体系的吸收光谱，用基于Ｒｏｓｅｎｂｒｏｃｋ算法的最优化程序处理了光度测量数据，发现Ｐｂ（Ⅱ）与５－Ｂｒ－ＰＡＤＡＰ形成１：１络合物，稳定常数ｌｇβ＿１＝１１．２１，摩尔吸光系数ε＿１＝６．２×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）；Ｚｎ（Ⅱ）在ｃ＿Ｌ＞ｃ＿Ｍ的条件下主要形成１：２络合物，ｌｇβ＿２＝２２．３６，ε＿２＝１．２８×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。     

锇—钼酸盐—碱性染料显色反应的研究

在聚乙烯醇存在下，锇与钼酸铵和碱性染料罗丹明Ｂ，丁基罗丹明Ｂ，耐尔蓝形成离子缔合物，不同碱性染料所形成的缔合物服从比耳定律的浓度范围和摩尔吸光系分别是：０－１．２μｇ／２５ｍｌ和ε５７０ｎｍ＝２．６２×１０＾６Ｌ．ｍｏｌ＾－１ｃｍ＾－１；０－１．０μｇ／２５ｍｌ和ε５７０ｎｍ＝２．８６×１０＾６Ｌ．ｃｍ＾－１；０－１．８μｇ／２５ｍｌ和ε５８５ｎｍ＝２．８１×１０＾６Ｌ．ｃｍ＾－１；０－１．８μｇ     

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