二环己基二苯并—19—冠—6合成及催化性能

本文叙述了一种冠醚化合物二环己基二苯并－１８－冠－６的合成，研究它在亲核取代反应中的催化知性。由３，４－二羟基环己基苯与βββ＇－二氯乙醚直接关环合成二环己基二苯并－１８－冠－６，将这种冠醚化合物作为催化剂，对ｎ－Ｃ８Ｈ１７Ｂｒ与ＫＩ及（Ｃ６Ｈ５ＯＨ＋ＫＯ）的亲核取代反应进行了相转移催化试验。结果表明，在ｎ－Ｃ８Ｈ１７Ｂｒ及（Ｃ６Ｈ５ＯＨ＋ＫＯＨ）的亲核取代反应，吐环己基二苯并－１８－冠－６的催化     

二环己基二苯并-18-冠-6合成及催化性能

本文叙述一种冠醚化合物二环已基二苯并─１８─冠─６的合成，研究它在亲核取代反应中的催化活性。由３，４一二羟基环己基苯与β，β＇一二氯乙醚直接关环合成二环已基二苯并─１８─冠─６，将这种冠醚化合物作为催化剂，对ｎ－Ｃ８Ｈ１７Ｂｒ与ＫＩ及（Ｃ６Ｈ５ＯＨ＋ＫＯＨ）的亲核取代反应进行了相转移催化试验。结果表明，在ｎ－Ｃ８Ｈ１７，Ｂｒ与ＫＩ及（Ｃ６Ｈ５ＯＨ＋ＫＯＨ）的亲核取代反应中，二环已基二苯并─１８─冠─６的催化效率优于二苯并─１８─冠。６。由此证实：在亲核取代反应中，二环己基二苯并─１８─冠─６有．良好的催化活性。     

冠醚—TBP—PVC固态膜输送Li^＋的电渗析法研究

分别以苯并１２－冠－４（Ｂ１２－Ｃ－４）苯并１５－冠－５（Ｂ１５－Ｃ－５）苯并１８－冠－６（Ｂ１８－Ｃ－６）和二苯并１８－冠－６（ＤＢ８－Ｃ－６）为载体,磷酸三丁酯（ＴＢＰ）或邻苯二甲酸二丁酯（ＤＢＰ）为增塑剂,聚氯乙烯（ＰＶＣ）为基质,制备了冠醚－ＴＢＰ（ＤＢＰ）－ＰＶＣ固态膜（ＣＴＰ膜）实验考察了各种膜对碱金属盐混合溶液中Ｍ＾＋电渗析膜输送的特性,实验表明,随冠醚环腔半径增加和溶液中Ｍ＾＋浓度     

聚苯乙烯支载缩乙二醇冠醚的合成及催化性能

通过聚苯乙烯树脂与冠醚二苯并－１８－冠－６间接枝一种含有（－ＣＨ２ＣＨ２Ｏ－）醚链的缩乙二醇（乙二醇,一缩二乙二醇,二缩三乙二醇,三缩四乙二醇）。合成了四种聚苯乙烯支载缩乙二醇二苯并－１８－冠－６的高聚物支载冠醚,均可作用相转移催化剂。聚苯乙烯支载缩二醇二苯并－１８－冠－６催化ｎ－溴辛烷与钾及苯酚钾的取代反应时,活性较未支载二苯并－１８－冠－６为高。     

木香薷化学成分的研究

从木香薷（Ｅｌｓｈｏｌｔｚｉａｓｔａｕｎｔｏｎｉｉ）分得１６种化合物,用光谱和理化等方法鉴定了其中１２种：６－甲基三十二烷（１）、β－谷甾醇（２）、α－Ｌ－正丁基山梨糖甙（３）、５－３″－甲基丁基）－８－甲氧基呋喃香豆素（４）、５－（３″－甲基－２″－烯丁基）－８－甲氧基呋喃香豆素（５）、５,７－二甲氧基－４′－羟基黄酮（６）、５,５′－二羟基－７－甲氧基－６,８,３″,３″－四甲基－３′,４′并     

贵金属冠醚配合物的研究Ⅲ K_2PtCl_6与冠醚配合物的合成和性质

在乙腈溶液中，Ｋ２ＰｔＣｌ６分别与二苯并－１８－冠－６及１８－冠－６进行反应，生成两种新的固态 氯铂酸钾冠醚配合物。经元素分析，摩尔电导，红外吸收光谱和紫外吸收光谱等性质的研究。从 而确定其配合物的配位类型和组成。它们的化学式分别为 Ｋ２ＰｔＣｌ６·２ＣＢ１８Ｃ６·２ＣＨ３ＣＮ和 Ｋ２ＰｔＣｌ６·２（１８Ｃ６）·２ＣＨ３ＣＮ。     

（1R，3R）－（－）－1－甲氧基－5，6－亚甲二氧基－3－（3，4，5－三甲氧苯基）－异苯并二氢呋喃的选择性合成

在ＬｉＡｌＨ４及光学活性物质（５Ｒ）－孟氧基－２（５Ｈ）－呋喃酮（５）存在下，将６－（３′，４′，５′－三甲氧基羟卞基）－胡椒醛二甲缩醛（４）的甲苯溶液加热回流８小时，可得旋光性的（１Ｒ，３Ｒ）－（－）－１－甲氧基－５，６－亚甲二氧基－３－（３，４，５－三甲氧苯基）－异苯并二氢呋喃晶体（１），产率６１．８％．     

溴素的有机化学：I.2,4,6—三溴苯甲酸溴代和非溴代芳酯的合成

用ｍ－氨基苯甲酸作原料，经溴代、重氮化、还原脱氨、酰氯化和酯化反应等步骤，合成了六种新型的三溴苯甲酸代和非溴代芳酯，即：双（２，４，６－三溴苯甲酸）－２′，３′５′，６′－四溴－１′，４′－苯二酯，２，４，６－三溴苯甲酸－２′，３′，４′，５′，６′－五溴苯酯，２，４，６－三溴苯甲酸－２′，４′，６′－三溴苯酯，２，４，６－三溴苯甲酸－４′－溴苯酯，２，４，６－三溴苯甲酸－４′－甲基苯酯和２，４，     

中性载体冠醚PVC膜锂离子选择性电极的研制

本文以新合成的３’－（２，５，８－三氧杂任基）－苯并－１２冠－４和（２，３：９，１０－二苯半－１４－冠－４）－６－氧基乙酰二环己胺为活性物质，磷酸三丁酯为增塑剂 ，制成两种锂离子选择性电极，并分别研究了它们的特性。     

双端烯丙基冠醚的合成

用３，５－二叔丁基二苯并－１４－冠－４双羟基冠醚及３－正十五烷基二苯并－１４－冠－４双羟基冠的顺式和反式异构体，分别与溴丙烯反应，合成了４种新的双端烯丙基冠醚，通过红外光谱，核磁共振谱，质谱和元素分析确定了它们的结构。     

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…     

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。     

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     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

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.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.