水滑石及柱撑水滑石的制备和表征

制备了水滑石Ｍｇ６Ａｌ２（ＯＨ）１６ＣＯ３．４Ｈ２Ｏ和类水滑石Ｍｇ４Ａｌ２（ＯＨ）１２（ＮＯ３）２．４Ｈ２Ｏ，Ｚｎ６Ａｌ２（ＯＨ）１６ＣＯ３．４Ｈ２Ｏ它们的晶体结构基本相似，热稳定性都不很高，２００℃时将失去全部结晶水，２００～４５０℃时将失去全部层间阴离子，以及大部分ＯＨ＾－。用离子交换法和共沉淀法制轩了１，５－二萘磺酸柱撑水滑石Ｍｇ４Ａｌ２（ＯＨ）１２（Ｃ１０Ｈ６（ＳＯ３）２）．４Ｈ２Ｏ，其层     

1000℃MgO—B2O3—SiO2三元相关系研究

ＭｇＯ－Ｂ２Ｏ３－ＳｉＯ２三元系１０００℃时，３５％≤ＭｇＯ％〈６０％组成范围内平衡相均为固相，其相关系可由Ｍｇ３Ｂ２Ｏ６－Ｍｇ２ＳｉＯ４－Ｍｇ２Ｂ２Ｏ５，Ｍｇ２Ｂ２Ｏ５－Ｍｇ２ＳｉＯ４－ＭｇＳｉＯ３，Ｍｇ２Ｂ２Ｏ５－ＭｇＳｉＯ３－ＳｉＯ２三个结线三角形表示。各平衡相量之间关系可应用ＸＲＤ定量相分析或重心规则计算。     

斑节对虾组织的原代培养

选用Ｌ－１５,添加１０％～２０％ＦＢＳ,渗透压用ＮａＣｌ等调节,ｐＨ７．０,在２８℃下,原代培养斑节对虾的多种组织,发现淋巴器官,造血器官和血淋巴的组织细胞在较宽范围的培养基渗透压条件下能贴壁生长形成细胞单层．每升培养基添补７．５０ｇＮａＣｌ,０．３２ｇＫＣｌ,１．０２ｇＭｇＣｌ２６Ｈ２Ｏ,０．４９ｇＭｇＳＯ４７Ｈ２Ｏ,２．００ｇＣａＣｌ２２Ｈ２Ｏ和０．３０ｇ葡萄糖调节渗透压时,上述３种组织细胞生长最好     

混合价十二核锰配合物的合成、结构及磁性研究

合成了２个十二核锰的配合物「Ｍｎ１２Ｏ１２（３－Ｃｌ－Ｃ６Ｈ４ＣＯ２）１６（Ｈ２Ｏ）３（３－Ｃｌ－Ｃ６Ｈ４ＣＯ２Ｈ）」．３－Ｃｌ－Ｃ６Ｈ４ＣＯ２Ｈ１,和「Ｍｎ１２Ｏ１２（ＣＨ３ＣＯ２）４（３－Ｂｒ－Ｃ６Ｈ４ＣＯ２）１２（Ｈ２Ｏ）４」．３－Ｂｒ－Ｃ６Ｈ４ＣＯ２Ｈ．Ｈ２Ｏ２。用Ｘ－射线衍射单晶分析法测定了配合物１的结构,其中心含有一个类立方体结构的「Ｍｎ＾４＋４Ｏ４」＾＋８。这个簇芯被一非共面的８个Ｍ     

MgAPO—44舂子筛的合成与性能研究

以Ａｌ（ＯＨ）３．Ｈ３ＰＯ４，ＭｇＣｌ２．６Ｈ２Ｏ为原料，以环己胺为模板剂，用水热晶化法合成了ＭａＡＰＯ－４４分子筛纯相，研究了反应物配比、酸碱度及铝源等水热晶化条件对产物物相的影响，骼ＸＲＤ．ＩＲ，ＳＥＭ／ＥＰＭＡ，ＴＧ－ＤＴＡ等对产物进行了表征。研究表明，所合成的ＭｇＡＰＯ－４４分子筛具有小孔结构和较高的热稳定必一。     

Bi(OR)_3作前驱体合成Bi_2O_3微粉(R:CH_2CH_2OCH_3,CMe_2Et)

报道了醇盐化合物Ｂｉ（ＯＲ）３（Ｒ∶ＣＨ２ＣＨ２ＯＣＨ３，ＣＭｅ２Ｅｔ）作前驱体，Ｓｏｌ－Ｇｅｌ法合成Ｂｉ２Ｏ３多晶粉末的过程，探讨了Ｂｉ（ＯＲ）３性质及合成条件对产物物相的影响，并考察了Ｂｉ２Ｏ３微粉的颗粒性质．结果表明，Ｂｉ（ＯＲ）３的水解、聚合速度越快或在富氧气氛下煅烧干凝胶利于β－Ｂｉ２Ｏ３的生成，而乏氧气氛煅烧干凝胶或较小的升温速度则利于α－Ｂｉ２Ｏ３的生成，最后得到的Ｂｉ２Ｏ３微粉颗粒近似为球形，粒度范围为６０～１２０ｎｍ．     

MgCl2—KCl—H2O体系相图的测定及其应用

本文测定了ＭｇＣｌ２－ＫＣｌ－Ｈ２Ｏ体系２８℃和３０℃时的相图，结合文献中该体系的溶解度曲线，提出从盐卤提取的复盐ＫＣｌ．ＭｇＣｌ２．６Ｈ２Ｏ中分离ＫＣｌ的简便方法。     

工艺对SrTiO3—MgTiO3—Bi2O3·nTiO2系陶瓷结构和性能的影响

研究了ＳｒＴｉＯ３－ＭｇＴｉＯ３－Ｂｉ２Ｏ３ｎＴｉＯ２系陶瓷的初始原料及合成工艺对材料结构和性能的影响．研究表明，采用不同初始原料和合成工艺制成的材料的结构和性能差别很大．以ＳｒＴｉＯ３、碱式碳酸镁、ＴｉＯ２为初始原料以及经过预先合成烧块的工艺，有利于Ｍｇ２＋和Ｂｉ３＋在ＳｒＴｉＯ３晶格中发生电价补偿置换，促进Ｂｉ２Ｏ３ｎＴｉＯ２在ＳｒＴｉＯ３中的固溶，并可获得充分烧结的、电性能优异的高介低损耗瓷料     

化学需氧量COD_（Cr）测定条件改进的研究

本文提出以Ａｇ２ＳＯ４—Ａｌ２（ＳＯ４）３—ＭｇＳＯ４作催化剂，在Ｈ２ＳＯ４－Ｈ３ＰＯ４混酸溶液中快速测定废水ＣＯＤ的新方法．实验确定的最佳条件是：Ａｇ２ＳＯ４：Ａｌ２（ＳＯ４）３：ＭｇＳＯ４＝１∶１∶１（质量比），Ｈ２Ｏ４：Ｈ３ＰＯ４＝５∶１（体积比），回流时间０．５小时，通过对废水ＣＯＤ的测定，取得与标准法相近的结果．     

快速燃烧方法制备超细Cu／ZnO／Al_2O_3催化剂及其在CO_2与H_2合成

采用快速燃烧方法制备了超细Ｃｕ／ＺｎＯ／Ａｌ２Ｏ３催化剂．考察了制备参数对催化剂的结构和性质的影响．在脲与ＮＯ－３摩尔比为０．２６、预置反应温度为５００℃时，制得了分散度较好、颗粒较细的Ｃｕ／ＺｎＯ／Ａｌ２Ｏ３催化剂，其粒径和比表面分别为１６ｎｍ和９３．５ｍ２·ｇ－１．制备参数对ＣＯ２与Ｈ２合成甲醇反应中催化剂的催化性能有显著的影响．对制备过程和机理亦进行了较为详细的讨论．     

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…     

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.     

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).     

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.