稀土果糖—高氯酸及稀土—果糖—硼酸配合物的研究

首次合成了镧（Ｌａ）、镨（Ｐｒ）、钕（Ｎｄ）、钐（Ｓｍ）、钆（Ｇｄ）的果糖－高氯酸固体配合物以及Ｌａ,Ｐｒ,Ｎｄ,Ｓｍ,Ｇｄ和Ｅｕ（铕）的硼酸－果糖配合物．利用化学分析,ＩＲ,１ＨＮＭＲ,ＵＶ和热谱等物理化学手段对这两系列共１１个配合物的组成和成键情况进行了表征,并对它们的某些物理化学性质进行了研究．结果表明：稀土－果糖－高氯酸配合物的组成为：ＲＥ３（Ｃ６Ｈ１１Ｏ６）５（ＯＨ）２（ＣｌＯ４）２３Ｈ２Ｏ（ＲＥ＝Ｌａ,Ｐｒ,Ｎｄ,Ｓｍ,Ｇｄ）;稀土－果糖－硼酸配合物的组成为：ＲＥ（Ｃ６Ｈ１２Ｏ８Ｂ）２Ｃｌ２ＣＨ３ＯＨ,（ＲＥ＝Ｌａ,Ｐｒ,Ｎｄ,Ｓｍ,Ｅｕ,Ｇｄ）．     

三水氯化镧与冠醚B15C5在乙腈中配合行为的半微量相平衡研究

采用半微量相平衡方法研究了ＬａＣｌ３·３Ｈ２Ｏ－Ｂ１５Ｃ５－ＣＨ３ＣＮ三元体系在２５℃时的溶解度，测定了各饱和溶液的折光率。该体系在２５℃生成一种化学计量的三元配合物：ＬａＣｌ３·Ｂ１５Ｃ５·３Ｈ２Ｏ－ＣＨ３ＣＮ。经分离、洗涤制得了固态配合物，分别在８０％Ｈ２ＳＯ４与９８％Ｈ２ＳＯ４干燥器中干燥王恒重，经化学分析确定配合物的组成为：ＬａＣｌ３·Ｂ１５Ｃ５·３Ｈ２Ｏ与ＬａＣｌ３·Ｂ１５Ｃ５。用ＩＲ，ＤＴＧ，ＴＧ，ＤＳＣ以及ｘ－射线衍射分析研究了配合物的组成与性质。     

稀土氯化物与咪唑配合物的热分解研究

采用ＴＧ－ＤＴＧ，在不同气氛（Ｏ２气氛、Ｎ２气氛）、不同升温速率条件下，对五种氯化稀土咪唑配合物ＲＥ（Ｃ３Ｈ４Ｎ２）ｎＣｌ３·０．５ＣＨ３ＯＨ·２ＨＣｌ·ｍＨ２Ｏ（ＲＥ＝Ｌａ，Ｎｄ，Ｓｍ，ｎ＝２；ＲＥ＝Ｇｄ，Ｙ，ｎ＝２．５）的热失重行为进行了研究，推测了各配合物的热分解过程；应用Ｋｉｓｓｉｎｇｅｒ公式计算了配合物中咪唑分解的表观活化能，并用ＤＳＣ对氯化稀土（Ｌａ，Ｎｄ）咪唑配合物进行了分析     

苯甲酰丙酮，氨基吡啶与Cu（Ⅱ）的双核配合物的合成和磁性

合成了含有Ｃｌ－桥联配体的两个新的双核配合物：Ｃｕ２（ａｍｐｙ）２Ｃｌ４·１／２Ｃ２Ｈ５ＯＨ（ａｍｐｙ＝α－氨基吡啶）和Ｃｕ２［Ｎ，Ｎ’ｂｉｓ（ａｍｐｙ）－ｂｚａｃ（Ｈ２Ｏ）］Ｃｌ４·Ｃ２Ｈ５ＯＨ（ｂｚａｃ＝苯甲酰丙酮）．通过元素分析、ＩＲ、ＥＳＲ和室温磁化率表征，测定了这两个配合物的变温磁化率（４～３００Ｋ），其数值用最小二乘法与从自旋Ｈａｍｉｌｔｏｎｉａｎ算符导出的磁化率理论曲线拟合很好；求得了交换积分，对于配合物Ｃｕ２（ａｍｐｙ）２Ｃｌ４·１／２Ｃ２Ｈ５ＯＨ，Ｊ＝－４．７６Ｃｍ－２；对于Ｃｕ２［Ｎ，Ｎ’ｂｉｓ（ａｍｐｙ）－ｂｚａｃ（Ｈ２Ｏ）］Ｃｌ４·Ｃ２Ｈ５ＯＨ，Ｊ＝－４．７２ｃｍ－２，表明两个配合物中Ｃｕ（Ⅱ）－Ｃｕ（Ⅱ）核间有反铁磁相互作用．     

二茚基钐断裂I—I,O—O和S—S键反应的研究

通过２价Ｓｍ（Ｃ９Ｈ７）２与Ｉ２,（Ｃ６Ｈ５ＣＯ２）２,［（Ｃ２Ｈ５）２ＮＣＳ２］２作用,研究了在四氢呋喃溶液中Ｓｍ（Ｃ９Ｈ７）２断裂Ｉ－Ｉ,Ｏ－Ｏ,Ｓ－Ｓ键的反应,得到了３个新的、对空气和湿气敏感的３价稀土金属有机配合物。产物经元素分析、红外光谱、质谱等鉴定,推测其组成结构分别为（Ｃ９Ｈ７）２ＳｍＩ（ＴＨＦ）（Ａ）、［（Ｃ９Ｈ７）２Ｓｍ（（Ｃ６Ｈ５ＣＯ２）］２（Ｂ）,｛（Ｃ９Ｈ７）２Ｓｍ［（Ｃ２     

系列芳基烷基不对称亚砜硝酸铀酰配合物的合成及研究

本文合成了一系列烷基芳基不对称亚砜Ｒ１－Ｃ６Ｈ４－ＳＯ－Ｒ２（Ｒ１＝ＣＨ３，Ｃ（ＣＨ３）３；Ｒ２＝Ｃ２Ｈ５，Ｃ４Ｈ９，Ｃ６Ｈ１３，ＣＨ２ＣＨ（Ｃ２Ｈ５）Ｃ４Ｈ９），并且以之为配体（Ｌ）和硝酸铀酰反应，制备了一系列硝酸铀酰配合物ＵＯ２Ｌ２（ＮＯ３）２，通过元素分析、摩尔电导、红外光谱，研究了配合物的组成、结构和性质，并测定了配合物［ＵＯ２（ＴＢＳＯ）２（ＮＯ３）２］的晶体结构。     

稀土与吡啶甜菜碱和2,2‘—联吡啶配合物的研究

合成了稀土土离子（Ｌａ＾３＋，Ｎｄ＾３＋，Ｅｕ＾３＋，Ｇｄ＾３＋，Ｔｂ＾３＋，Ｅｒ＾３＋）与吡啶乙酸内盐（Ｃ５Ｈ５Ｎ＾＋ＣＨ２ＣＯ＾－２，ｐｙｂ）及，２，２‘－联吡啶的三元配合物。通过元素分析，红外光谱等测试手术，确定配合物的组成为ＲＥ２（ｂｐｙ）５（ｐｙｂ）４（ＣｌＯ４）６．５Ｈ２Ｏ。测定了Ｅｕ＾３＋配合物的晶体结构，属三斜晶系。     

稀土烯丙基化合物的研究（XV）：含环戊二烯基或吡咯基的异？…

以２－甲基烯丙基氯化镁与无水稀土氯化物低温下反应,得到含镁２－甲基烯丙基稀土配合物（Ｌｎ（Ｃ４Ｈ７）２（Ｍｇ２Ｃｌ５（ＴＨＦ）４）。该配合物与环戊二烯或吡咯进行配体取代反应,分别得到两个系列的含环戊二烯基（Ｃ５Ｈ５）或吡咯基（Ｃ４Ｈ４Ｎ）的异核混配型稀土烯丙基配合物（Ｌｎ２（Ｃ５Ｈ５）３（Ｃ４Ｈ７）Ｍｇ３Ｃｌ８（ＴＨＦ）６,Ｌｎ２（Ｃ４Ｈ４Ｎ）３（Ｃ４Ｈ７）Ｍｇ３Ｃｌ８（ＴＨＦ）６（ＴＨＦ）６（Ｌ     

稀土与吡啶甜菜碱和2，2′－联吡啶配合物的研究

合成了稀土离子（Ｌａ３＋，Ｎｄ３＋，Ｅｕ３＋，Ｇｄ３＋，Ｔｂ３＋，Ｅｒ３＋）与吡啶乙酸内盐（Ｃ５Ｈ５Ｎ＋ＣＨ２ＣＯ２－，ｐｙｂ）及２，２′－联吡啶（ｂｐｙ）的三元配合物．通过元素分析、红外光谱等测试手段，确定配合物的组成为ＲＥ２（ｂｐｙ）５（ｐｙｂ）４（ＣｌＯ４）６·５Ｈ２Ｏ．测定了Ｅｕ３＋配合物的晶体结构，属三斜晶系．通过ｆ－ｆ超灵敏跃迁光谱及荧光光谱讨论了配合物化学键的离子性特点．     

三元体系La（ClO_4）_3·3H_2O—18C6－CH_3COCH_3（25℃）的研究

为了探讨稀土高氯酸盐与冠醚１８Ｃ６在不同溶剂中相平衡行为的规律性，采用半微量相平衡方法研究了三元体系Ｌａ（ＣｌＯ４）３·３Ｈ２Ｏ—１８Ｃ６—ＣＨ３ＣＯＣＨ３在２５℃时的相平衡行为，测定了饱和液相的折光率，并绘制了相应的相图和饱和液相的折光率曲线．结果表明，饱和溶液的折光率曲线与相图中的溶解度曲线相吻合；体系形成了两种化学计量的配合物：Ｌａ（ＣｌＯ４）３·１８Ｃ６·３Ｈ２Ｏ·２ＣＨ３ＣＯＣＨ３和Ｌａ（ＣｌＯ４）３·２（１８Ｃ６）·３Ｈ２Ｏ·ＣＨ３ＣＯＣＨ３考察了相平衡过程中水的行为及不同溶剂对Ｌａ（ＣｌＯ４）３·３Ｈ２Ｏ与１８Ｃ６间配合行为的影响，结果指出：不论是在液相中还是在湿固相中，Ｈ２Ｏ与Ｌａ（ＣｌＯ４）３的摩尔比总是３：１，从而证明了相平密结果的可靠性；从合成固态配合物角度出发，用丙酮和乙醇作溶剂比较恰当．     

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