复合型纳滤膜的制备及表征

在聚砜基膜上用界面聚合法制备了两种复合型纳滤膜ＰＡ０１和ＰＡ０２。在０．３ＭＰａ下,ＰＡ０１膜对ＭｇＳＯ４溶液和ＦｅＣｌ３溶液的脱直 ９６．０％和７８．０％,水通量分别为８．５（Ｌ．ｍ＾－２．ｈ＾－１）和７．９（Ｌ．ｍ＾－２．ｈ＾－１）;ＰＡ０２膜对ＭｇＳＯ４ｉｐｗｋｉｙｗ （２．０ｇ．Ｌ＾－１）和ＣａＣｌ溶液（０．５ｇ．Ｌ＾－１）的脱盐率分别为９８．０％和８８．８％,水通量分别为１．０（Ｌ。ｍ＾     

K_(0.5)(NH_4)_(5.5)[MnMo_9O_(32)]6H_2O的合成及其晶体结构

由ＫＭｎＯ４和（ＮＨ４）６Ｍｏ７Ｏ２４４Ｈ２Ｏ合成了标题化合物Ｋ０．５（ＮＨ４）５．５［ＭｎＭｏ９Ｏ３２］６Ｈ２Ｏ，用ｘ－射线测定了晶体结构．该化合物的晶体属三方晶系，空间群Ｒ３２；ａ＝１５．８４６（４），Ｃ＝１２．３９６（３），Ｍｒ＝１６５７．２８，Ｖ＝２６９５．６３，Ｚ＝３，Ｄｃ＝３．８２ｇ／ｃｍ３，μ＝４１．５ｃｍ－１，Ｆ（０００）＝２９６７．对３０２４个可观测衍射［Ｆ０≥３σ（Ｆ０）］最终偏离因子Ｒ＝０．０３７，Ｒｗ＝０．０４３．结构测定表明：Ｍｎ（Ⅳ）与６个氧配位形成键长相同的ＭｎＯ６八面体，它位于［ＭｎＭｏ９Ｏ３２］６－阴离子的中心，而Ｍｏ（Ⅵ）均与氧原子六配位，形成９个畸变的ＭｏＯ６八面体．     

极谱吸附波连续测定水样中痕量锌,锰和硒

在酒石酸－乙二胺－高氨酸－亚硫酸钠－高碘酸钟体系中痕量锌锰和硒出现良好极谱吸附波，波峰敏锐，可测定浓度范围在０．４０～４０μｇ／Ｌ　Ｚｎ￣（２＋）１．６～８０μｇ／ＬＭｎ￣（２＋）及０．０２～２．３μｇ／ＬＳｅ（Ⅳ）。对含１１．７μｇ／Ｌ　Ｚｎ￣（２＋），７．０μｇ／Ｌ　Ｍｎ，１．４５μｇ／Ｌ　Ｓｅ（Ⅳ）的矿泉水样测定，其相对标准偏差分别是６．２％和９．２％和７．３％。     

Ba和Mg掺杂对Bi（Pb）—Sr—Ca—Cu—O超导性能的影响

采用固态反应法制备了名义组分为Ｂｉ１．８Ｐｂ０．２Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ和Ｂｉ０．９Ｐｂ０．１Ｂａ０．１Ｍｇ０．１Ｓｒ０．８ＣａＣｕ２Ｏｘ超导样品，并研究了Ｂａ，Ｍｇ掺杂对Ｂｉ系超导性能的影响。用Ｘ射线衍射及电阻－温度关系的测量获得的实验结果表明，添加Ｂａ和Ｍｇ元素可以有效地抑制Ｂｉ系２２１２相的生成，促进２２２３相的形成，并能提高超导材料的Ｔｃ。     

Ba和Mg掺杂对Bi（Pb）－Sr－Ca－Cu－O超导性能的影响

采用固态反应法制备了名义组分为Ｂｉ１．８Ｐｂ０．２Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ和Ｂｉ０．９Ｐｂ０．１Ｂａ０．１Ｍｇ０．１Ｓｒ０．８ＣａＣｕ２Ｏｘ超导样品，并研究了Ｂａ、Ｍｇ掺杂对Ｂｉ系超导性能的影响。用ｘ射线衍射及电阻－温度关系的测量获得的实验结果表明，添加Ｂａ和Ｍｇ元素可以有效地抑制Ｂｉ系２２１２相的生成，促进２２２３相的形成，并能提高超导材料的Ｔｃ．     

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．     

低浓度甲醇完全氧化钙钛矿型La1-xSrxMnO3催化剂研究

采用溶胶－凝胶法制备钙钛矿型复合氧化物Ｌａ１－ｘＳｒｘＭｎＯ３,研究其对低浓度甲醇完全氧化催化性能．实验结果表明：Ｓｒ２＋取代量和样品焙烧温度对催化剂活性均有显著影响,以８７３Ｋ焙烧的Ｌａ０．６Ｓｒ０．４ＭｎＯ３的催化活性为佳;催化剂的ＢＥＴ,ＸＰＳ,Ｏ２－ＴＰＤ,Ｈ２－ＴＰＲ表征研究结果证实,较大的比表面,较高的表面Ｍｎ浓度和氧吸附量都有利于催化剂活性的提高．     

二氧四—2,2‘—联吡啶合二锰（Ⅲ,Ⅳ）高氯酸盐三水合物…

本报道标题化合物［（ｂｐｙ）２Ｍｎ（μ－０）２Ｍｎ（ｂｐｙ）２］（ＣＩＯ４）３·３Ｈ２Ｏ（ｂｐｙ＝２，２＇－ｂｉｐｙｒｉｄｉｎｅ）的晶体结构重新测定的精确结果，该化合物的晶体属单斜晶系，空间群为Ｐ２１／ｃ（Ｎｏ．１４），α＝１．３８９３（５），ｂ＝１．３９８７（４），ｃ＝２．４３１７（９）ｎｍ，β＝１０３．６１（３）°，Ｕ＝４．５９８（２）ｎｍ＾３，Ｍｒ＝９．１，Ｚ＝４，Ｄｃ＝１．６１８ｇ．ｃｍ     

高效液相色谱测定骨痛灵胶囊中芍药甙含量

采用高效液相色谱法测定骨痛灵胶囊中芍药甙含量,色谱条件为：ＳＵＰＥＬＣＯＳＬＩＬＴＭＬＣ－Ｃ１８（５μｍ,２５０×４６ｉ．ｄ．ｍｍ）;流动相：乙氰／水（１２∶８８）;流速：１２ｍｌ／ｍｉｎ;４０℃;检测波长：２３０ｎｍ。方法简单、快速和准确,芍药甙在０１～１０μｇ呈良好的线性关系（ｒ＝０９９９８）,平均回收率（ｎ＝７）和相对标准偏差分别为９９３％和１１６％。     

关于连续数方程注记

本文用初等方法证明了,当ｎ,ｘ ,ｒ 是正整数且ｒ ＞ ３ ,ｄ ＝ ２ｓ＋ ２ ,整数Ｓ≥０ ,ｇｃｄ（ ｘ,ｄ） ＝ １ ,丢番图方程ｎ－１ｋ＝ ０（ｘ ＋ ｄｋ）ｒ ＝ （ｘ ＋ ｄｎ）ｒ 无整数解。     

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).     

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.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.