Mn液中Ca溶解量及第3组元的影响

用密封容器气液平衡法，测定了Ｃａ在Ｍｎ液中的饱和溶解量及第３组元Ｃ、Ｓｉ，Ｎｉ，Ａｌ，Ｃｒ和Ａｓ对其的影响，得到的Ｍｎ液中Ｃａ饱和溶解量与温度的关系式，以及１６７３Ｋ下Ｍｎ液中第３组元与钙的活度相互作用系数。     

利用阻抑反应测定Mn(Ⅱ)的研究

实验证明在ｐＨ１．０的ＨＣｌ－ＫＣｌ酸性介质中Ｍｎ（Ⅱ）阻抑Ｆｅ（Ⅲ）催化ＮａＩＯ４氧化甲苯胺蓝（ＴｏｌｕｉｄｉｎｅｂｌｕｅＣ１５Ｈ１６ＣＩＮ３Ｓ）褪色反应是一个新的阻抑反应体系,其阻抑作用和催化反应的速率差与Ｍｎ（Ⅱ）含量有线性关系。速率差通过体系在６２２ｎｍ波长处吸光度值的变化求得,从而建立了利用阻抑反应测定Ｍｎ（Ⅱ）的新方法。该方法用于井水和自来水中Ｍｎ（Ⅱ）测定,获得满意结果。     

CO2激光器内工作气体再生的催化剂研究

本研究采用共沉淀方法制备出四种催化剂,ＣｕＭｎ１．３６Ｏｘ、Ｃｅ／ＣｕＭｎ１．３６Ｏｘ、Ａｕ／ＣｕＭｎ１．３６Ｏｘ和Ａｕ－Ｃｅ／ＣｕＭｎ１．３６Ｏｘ。在２００℃时,对催化剂进行 了６ｈ的氧所氛处理;用扫描电镜和比表面测定对催化剂进行了表征;考察了催化剂对ＣＯ氧化反应的催化活性。结果表明,在ＣｕＭｎ１．３６Ｏｘ中掺入稀土元素Ｃｅ大大增加了催化剂的比表面,Ａｕ在催化剂表面的分散度越高其活性越好,氧气氛     

印染废水CODMn与CODCr相关性与废水处理的研究

随着印染技术的发展,其生产工艺有很大改进,同时更多的化学印染助剂与化工原料广泛的应用于印染生产中,导致印染废水成份日趋复杂,对其治理难度增大。本文通过对技术更新前后的印染废水中ＣＯＤＭｎ与ＣＯＤＣｒ测定相关性研究结果表明：（１）印染废水中可生化性有机物成份呈下降趋势;（２）ＣＯＤＭｎ测定值越接近ＣＯＤＣｒ测定值时,废水中可生化物成分增大,与传统的ＢＯＤ５与ＣＯＤＣｒ相关性研究结论相一致;（３）依据     

氧含量分析法确定Sm1＋xBa2—xCu3On的固溶区

基于碘量法测定高温超导氧化物氧含量的方法，总结出固溶化合物Ｓｍ１＋ｘＢａ２－ｘＣｕ３Ｏｎ的氧含量ｎ随固溶度ｘ变化的规律性，从理论分析和实验测定得出在固溶区域内，Ｓｍ＾１＋ｘＢａ２－ｘＣｕ３Ｏｎ的氧含量ｎ与替代程序ｘ呈线性关系，超出固溶极限ｘ０，直线斜率将发生明显变化。此结果与Ｘ射线粉末衍射结果基本一致。     

Keggin结构钼磷杂多酸／三聚苯胺掺杂材料的制备,表征及性质研究

以杂多酸Ｈ３ＰＷ１２－ｎＭｏｎＯ４０·ｘＨ２Ｏ（ｎ＝１,３）和三聚苯胺Ｈ２Ｎ－Ｎ－Ｎ－ＮＨ２为原料制备了钼磷杂多酸／三聚苯胺掺杂材料,用元素分析、红外光谱、紫外－可见光谱、Ｘ射线粉末射谱、热重分析等对此材料进行了表征,测定了其在不同有机溶剂（ＤＭＦ,ＮＭＰ〈ＣＨＣｌ３）中的溶解度,材料的荧光光谱表明,在３６６ｎｍ和８６３ｎｍ 处均有较好的荧光发射峰。     

氧化铈对Cu－Mn－O燃烧催化剂氧化还原性能的影响

利用微反－色谱技术考察了Ｃｕ－Ｍｎ－Ｏ及Ｃｕ－Ｍｎ－Ｃｅ－Ｏ催化剂的甲苯完全燃烧活性；通过改变氧的浓度，研究了ＣｅＯ＿２对Ｃｕ－Ｍｎ－Ｏ催化剂性能的影响；用ＴＰＲ、ＴＰＯＴ和氢氧滴定法测定了催化剂的表面性能。结果表明，ＣｅＯ＿２能够增加催化剂表面的贮氧量，提高吸氧能力，改进供氧性能，进而提高Ｃｕ－Ｍｎ－Ｏ催化剂在低氧比时的无化活性，也能使还原后的Ｃｕ－Ｍｎ－Ｏ催化剂具有良好的再生氧化活性。     

氧含量分析法确定Sm_（1＋x）Ba_（2－x）Cu_3On的固溶区

基于碘量法测定高温超导氧化物氧含量的方法，总结出固溶化合物Ｓｍ（１＋ｘ）Ｂａ（２－ｘ）Ｃｕ３Ｏｎ的氧含量ｎ随固溶度ｘ变化的规律性；从理论分析和实验测定得出在固溶区域内，Ｓｍ（１＋ｘ）Ｂａ（２－ｘ）Ｃｕ３Ｏｎ的氧含量ｎ与替代程度ｘ呈线性关系，超出固溶极限ｘ０，直线斜率将发生明显变化。此结果与Ｘ射线粉末衍射结果基本一致．     

板栗中某些微量元素的测定及其营养研究

对９种板栗测定了Ｃｕ，Ｚｎ，Ｍｎ含量．回收率在９９．２％～１０８％之间．９个样品的Ｃｕ，Ｍｎ，Ｚｎ含量有差异．并且进行了样品中Ｃｕ，Ｍｎ，Ｚｎ含量的营养评价     

人发中多种微量元素的同时测定──直流等离子体原子发射光谱法

研究了直流等离子体原子发射光谱法同时测定人发中的Ｚｎ，Ｍｎ，Ｃｕ，Ｆｅ，Ｃａ。讨论了Ｃａ和Ｍｇ对Ｚｎ，Ｍｎ，Ｃｕ，Ｆｅ的干扰及对干扰的校正方法。对ＧＢＷ０９１０１进行了测定，结果与标准值吻合很好。对发样进行了实测和回收实验。Ｚｎ，Ｍｎ，Ｃｕ，Ｆｅ，Ｃａ的回收率分别为９２．９％～１０９％，９２．０％～１０６％，９４．０％～１０６％，９４．０％～１１２％，８９．３％～１１３％。     

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