2,7-二溴螺[芴-9,9′-(2′,7′-二羟基-1′,8′-二磺酸基氧杂蒽)]的合成与表征

以芴为原料,经Br2/Fe溴代、CrO3/Ac2O氧化、间苯二酚/ZnCl2催化缩合得到2,7-二溴螺[芴-9,9′-(2′,7′-二羟基氧杂蒽)](Ⅲ),化合物Ⅲ经浓硫酸磺化合成目标产物2,7-二溴螺[芴-9,9′-(2′,7′-二羟基-1′,8′-二磺酸基氧杂蒽)](Ⅳ).考察了反应温度、反应物配比、反应时间等对磺化产物Ⅳ收率的影响,并通过傅里叶红外光谱、氢核磁共振谱、紫外?可见光谱等手段对化合物Ⅳ的结构进行了表征.确定了磺化反应的最佳条件,即反应温度70℃、每1g化合物Ⅲ对应加入浓硫酸3mL、反应时间2 h,该条件下磺化产物(化合物Ⅳ)收率达86.5%.     

稀土钐硝酸盐、2,2-二羟甲基丙酸、1,10-邻菲咯啉四元配合物的合成及性能表征研究

以8-羟基喹啉作为酸度抑制剂,在无水乙醇溶剂中合成了含稀土钐（Sm）的四元配合物Sm（CH3C（CH2OH）2COO）（NO3）2（Phen）.用元素分析、IR、UV、DTA-TG等方法对配合物进行了表征,并测试了配合物的溶解性、导电性以及荧光性能.结果表明配合物稳定性好、有很好的荧光性能;DMPA的双羟基没有参与配位反应,可以进一步合成高分子型稀土荧光材料.     

二氧化硅负载五氧化二钒合成、表征和催化性能研究

在以丙酮为溶剂、以V2O5/SiO2为催化剂、8-羟基喹啉为助剂的催化条件下,以过氧化氢水溶液为氧化剂,对环己烯催化氧化制备环己烯酮的催化反应体系进行了研究。考察了V2O5的负载量以及8-羟基喹啉的用量及反应温度对环己烯氧化反应的影响,发现适当的负载量有利于V2O5催化性能的提高。结果表明,当V2O5负载量(质量分数)为5%、催化剂的量和8-羟基喹啉的质量相等、反应温度为30℃时环己烯的转化率和环己烯酮的选择性较好。这源于V2O5高度分散于SiO2载体上,增大了活性组分V2O5的表面积,从而增加了其活性中心的个数及活性组分与反应物的接触面积,从而增加了催化活性。     

三甲基氯硅烷催化羟基取代炔丙酮的环异构化反应合成色酮或3-呋喃酮

目的 发展一种合成色酮和3-呋喃酮的方法。方法 以甲醇为溶剂，在三甲基氯硅烷的催化作用和70℃加热条件下，羟基取代炔丙酮发生环异构化反应合成了色酮和3-呋喃酮化合物。结果 在最优反应条件下，各种邻羟基芳基炔丙酮和γ-羟基炔丙酮能以良好到优异的收率分别得到相应的色酮和3-呋喃酮产物。该环异构化反应具有操作简单、官能团耐受性好以及原子经济性等特点。通过核磁共振和高分辨质谱对所获得的产物结构进行了表征分析。结论 开发了三甲基氯硅烷催化邻羟基芳基炔丙酮和γ-羟基炔丙酮的环异构化反应，同时简捷有效地合成了色酮和3-呋喃酮衍生物。     

2,2'',4,4''-四羟基二苯甲酮的合成研究

用间苯二酚和2,4-二羟基苯甲酸作为原料,环丁砜作为反应介质,通过Friedel-Crafts反应合成了在工业、医药等行业具有广泛用途的2,2',4,4'-四羟基二苯甲酮.并且对比了环丁烯砜、环丁砜分别作为反应介质时不同的反应条件,指出了环丁烯砜的不稳定性是导致不同反应条件的原因.     

稀土钐邻香草醛缩甘氨酸席夫碱配合物的合成及表征

以六水氯化钐、邻香草醛缩甘氨酸席夫碱、8-羟基喹啉为原料,合成了邻香草醛缩甘氨酸席夫碱8-羟基喹啉稀土钐的三元配合物,通过元素分析、红外光谱、紫外光谱、热分析对配合物的结构进行了表征.实验表明,席夫碱脱质子以羧酸根的O原子与稀土Sm3+配位,而8-羟基喹啉脱质子后以酚羟基O和环上的N双齿配位,形成五元螯环.差热分析结果表明配合物热稳定性较好,不含结晶水,在300℃与550℃时,依次完全失去两种配体,最终分解产物为Sm2O3.初步推断该配合物化学式为Sm(C10H1 0NO4)2C9H6NO.     

1,2-二氧环乙烷类化学发光剂的合成研究

研究了1,2-二氧环乙烷类化学发光剂的合成方法,系统地探讨了反应温度、反应时间及反应物物质的量之比等因素对产物收率的影响,2-金刚烷酮与间羟基苯甲酸酯的McMurry分子间的交叉偶联反应,用TiCl4-Zn为还原剂,在最优实验条件下,主产物收率可达到81%.     

Sm,Nd,Eu,Tb与Oxine配合物的固相合成和表征

研究了低热固相反应一步合成镧系的8-羟基喹啉（Oxine）配合物Sm（Oxine)3,Nd(Oxine)3,Eu(Oxine)3,Tb(Oxine)3，经元素分析、IR及XRD测定，确定了配合物的结构，并讨论了固相反应的机理。     

羟基─N─磺酰基环拉胺的合成及功能化研究

Ｎ，Ｎ１一二磺酰基乙二胺与钠在乙醇中作用，所得Ｎ，Ｎ１一二磺酰基乙二胺二钠盐不经分离，直接与１，３－二氯－２－丙醇进行［１＋１］环缩合合成了６－羟基－Ｎ，Ｎ１－二磺酰基－１，４－二氮杂环庚烷．利用羟基的氯代反应、成醚反应和成酯反应对羟基成功地进行了功能化，从而在环上引入了氯原子、烷氧链和酰氧链．     

固体酸催化15-羟基十五烷酸酯合成环十五内酯

为探讨合成环十五内酯的新工艺,以蒜头果油为原料制备15-羟基十五烷酸酯,在强酸性阳离子交换树脂催化下合成环十五内酯.比较了两条合成路线:蒜头果油经提取得到二十四碳-15-烯酸,经臭氧化、还原、甲酯化反应得到15-羟基十五烷酸甲酯,在强酸性阳离子交换树脂催化下发生内酯化反应生成环十五内酯,收率为14.4%;蒜头果油直接经臭氧化、还原、甲酯化反应后,在强酸性阳离子交换树脂催化下发生内酯化反应生成环十五内酯,收率为10.4%.考察了树脂类型以及不同酯基的15-羟基十五烷酸酯对内酯化反应的影响,结果表明LS-50树脂的催化效果最佳,15-羟基十五烷酸乙酯合成环十五内酯的收率达到19.5%.     

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