中孔MCM-41分子筛的合成与表征

用廉价的工业品表面活性剂十八烷基三甲基氯化铵作模板剂，在Ｎａ２－Ｏ－ＳｉＯ２－Ｃ１８ＴＭＡ－Ｈ２Ｏ的四元水热体系中合成出中孔ＭＣＭ－４１分子筛，并考察了反应物配料比对产物相对结晶度的影响，同时用ＸＲＤ，ＳＥＭ，ＩＲ，ＴＧ／ＤＴＡ，Ｎ２吸附等温线及其孔径分布曲线等测试手段对其物化性能进行了表征。实验结果表明：用工业品表面活性剂代替试剂作模板剂同样能合成出高质量的中孔ＭＣＭ－４１分子筛。     

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。     

MgAPO-44分子筛的合成与性能研究

以Ａｌ（ＯＨ）３，Ｈ３ＰＯ４，ＭｇＣｌ２６Ｈ２Ｏ为原料，以环己胺为模板剂，用水热晶化法合成了ＭｇＡＰＯ－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，用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性     

MCM－41分子筛的合成与表征

在Ｎａ２Ｏ－（ＣＴＭＡ）２Ｏ－ＳｉＯ２－Ｈ２Ｏ与（ＴＭＡ）２Ｏ－（ＣＴＭＡ）２Ｏ－ＳｉＯ２－Ｈ２Ｏ体系中分别合成了不同硅铝比及全硅ＭＣＭ－４１分子筛作品，考察了诸因素对晶比过程的影响，同时对其酸性、热稳定性和催化性能进行了表征．     

MCM—41分子筛的合成与表征

在Ｎａ２Ｏ－（ＣＴＭＡ）２Ｏ－ＳｉＯ２－Ｈ２Ｏ与（ＴＭＡ）２Ｏ－（ＣＴＭＡ）２Ｏ－ＳｉＯ２－Ｈ２Ｏ体系中分别合成了不同硅铝比及全硅ＭＣＭ－４１分子筛样品，考察了诸因素对晶化过程的影响，同时对其酸性，热稳定性和催化性能进行了表征。     

二维纳米材料［Cd_xMg_（6－x）Al_2（OH）_（16）］~（2＋）［

用中温水热合成的方法，合成了类水滑石［Ｃｄ＿ｘＭｇ＿（６－ｘ）Ａｌ＿２（ＯＨ）＿（１６）］￣（２＋）［Ｓ·２Ｈ＿２Ｏ］￣（２－），用ＸＲＤ、ＦＴ－ＩＲ，ＤＴＡ─ＴＧ等手段进行了表征，讨论了它的热稳定性。     

晶化温度及pH值调节对中孔MCM—41分子筛合成的影响

在ＳｉＯ２－Ｎａ２Ｏ－Ｃ１６ＴＭＡ－Ｈ２Ｏ四元水热体系中，借助ＸＲＤ及Ｎ２吸附等温线等测试手段详细考察了晶化温度的变化对中孔ＭＣＭ－４１分子筛合成的影响，实验结果表明，随晶化温度的提高，产物ＸＲＤ主衍射射峰向２θ角的低角方向移动，孔壁硅盐的聚合度增大，孔壁厚度增加，这在一定程度上将有利于产物热稳定性的提高。但由于作模板剂的表面活性剂分子聚集体形成的胶团因晶化温度的提高而发生变形或部分破坏，进而侃产     

在Pr_3N－P_2O_5－Al_2O_3－H_2O体系中合成AlPO_4－5分

选用三正丙胺为模板剂．采用水热晶化法合成ＡｌＰＯ４－５分子筛。在Ｐｒ３Ｎ－Ｐ２Ｏ５－Ａｌ２Ｏ３－Ｈ２Ｏ体系中研究了水热晶化条件──模板剂用量、反应混合物ｐＨ值、晶化时间和晶化温度等。对ＡｌＰＯ４－５分子筛晶相形成和产物结晶度的影响。通过ＸＲＤ、ＩＲ、ＳＥＭ及ＤＴＡ、ＴＧ等分析手段，表征了ＡｌＰＯ４－５的结构和热稳定性能。     

壳聚糖─Cu（Ⅱ）配位聚合物的合成、表征及催化性能研究

采用一种新方法合成了壳聚糖与ＣＵ（Ⅱ）的配位聚合物，并用ＩＲ、ＥＳＲ、ＵＶ—ＶＩＳ、ＤＴＡ—ＴＧ和ＸＰＳ分析手段对配位聚合物进行表征．同时还研究了壳聚糖－ＣＵ（Ⅱ）配位聚合物与Ｎａ２ＳＯ３体系对ＭＭＡ聚合的催化性能，证实ＭＭＡ的聚合机理是按自由基机理进行的．     

MCM—41中孔分子筛的全微波辐射快速合成

采用正硅酸乙酯（ＴＥＯＳ）作硅源,十六烷基溴化铵（ＣＴＡＢｒ）作为模板剂,首次通过全微波辐射法合成了ＭＣＭ－４１中孔分子筛,用ＸＲＤ,ＴＧ,ＩＲ和ＳＥＭ等实验技术进行了表征．结果表明,此法合成时间短,晶化只需１０～１５ｍｉｎ,焙烧脱模也仅需１ｈ左右．本实验条件下,所得分子筛晶粒分布均匀,晶形以球状为主,晶粒大小约为１０μｍ．全微波辐射合成法,具有工艺简单,操作方便,省电节能,产品收得率高等特点．它可能为ＭＣＭ－４１中孔分子筛的快速合成,探索出一条新的途径．     

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.