硒硒硼氢化钠对芳基磺酰氯,芳基亚磺酸钠和芳基磺酸？…

三硒硼氢化钠（ＮａＢＨ２Ｓｅ３）是一种新型还原剂,其还原能力强于硼氢化钠（ＮａＢＨ４）在乙腈（ＣＨ３ＣＮ）溶液中,它可直接还原芳基磺酰氯（Ａｒ·ＳＯ２Ｃｌ）至相应的二硫化物（Ａｒ·ＳＳ·Ａｒ）产率比单独使用ＮａＢＨ４作还原剂的高。在二甲基酰胺（ＤＭＦ）溶剂中,也可将芳基亚磺酸钠Ａｒ·ＳＯ２Ｎａ）芳基磺酸酯（Ａｒ·ＳＯ３·Ａｒ′）直接还原为相应的二硫化物,而在同样的条件下,单独用ＮａＢＨ４却不能还原     

Na_2ZnCl_4·3H_2O：Mn~（2＋）晶体EPR参量及其单轴压力效应的

假设在Ｎａ２ＺｎＣｌ４·３Ｈ２Ｏ：Ｍｎ２＋晶体中，处于Ｃ３轴上与Ｍｎ２＋发生作用的是Ｈ２Ｏ配体而非Ｃｌ－；用对角化能量矩阵的方法计算Ｄ、ａ和ｇ，以及单轴压力效应ｄＤ／ｄｐ和ｄａ／ｄｐ，结果与实验相当一致，表明：Ｈ２Ｏ取代Ｃｌ－的假设是合理的，晶体场理论对Ｎａ２ＺｎＣｌ４·３Ｈ２Ｏ：Ｍ同样适用．     

锑在硼砂溶液中阳极极化膜半导体性质的研究（续）

本工作利用白光电流和交流阻抗法研究了锑在０．０５ｎ１Ｏｌ·ｄｍ￣（－３）Ｎａ＿２Ｂ＿４Ｏ＿７＋、０．５ｍｏｌ·ｄｍ“Ｎａ２Ｓｏ４溶液中（ＰＨ一９．ｌ，３０Ｃ）于１．２ｖ（ｖＳ。ＳＣＥ）阳极形成膜的半导体性质。实验结果表明，该阳极膜是一种ｎ型半导体，其平带电位为一０．３６Ｖ，施主密度为２．８×ｌ０￣１８ｃｍ￣（－３）。讨论了锑增加对在硫酚溶液中形成的阳极ｐｂ（Ⅱ）氧化物膜生长的影响。     

不同盐分在不同浓度条件下对玉米幼苗基础生理效应的研究

用一系列含同摩尔Ｎａ＾＋浓度的ＮａＣｌ、Ｎａ２ＣＯ３、Ｎａ２ＳＯ４溶液以及用磷酸中和至ＰＨ值与含同摩尔Ｎａ＾＋浓度的ＮａＣｌ溶液的ＰＨ值相等的Ｎａ２ＣＯ３溶液处理生长期为３０天的玉米幼苗。处理一周后,测定离子含量、渗透势、光合性能和叶绿素含量等各项生理指标。结果表明：在同摩尔Ｎａ＾＋浓度条件下,玉米幼苗在ＮａＣｌ、ＮａＣＯ３和Ｎａ２ＳＯ４胁迫下产生胁变的顺序为：Ｎａ２ＣＯ３〉ＮａＣｌ〉Ｎａ２ＳＯ４     

若干钒、铜异金属硫桥簇合物的红外光谱研究

采用红外光谱研究〔Ｖ２Ｓ６Ｏ２（ＣｕＰｐｈ３）４（Ｃｕ（ＭｅＣＮ））２〕·２（ＣＨ２Ｃｌ２）·２（ＰｒＯＨ）１－、〔ＶＳ４（ＣｕＰｐｈ３）４Ｂｒ〕·ＣＨ２Ｃｌ２２－和〔Ｖ２Ｓ６Ｏ２Ｃｕ６（３－ＭｅＰｙ）６３－簇合物．簇合物的结构特征和成键方式不同，在ν（Ｖ－Ｓ）和Ｐｐｈ３的δ（ｃｐｃ）的敏感振动模会有很大差别     

Co（Ⅱ）、Ni（Ⅱ）、Zn（Ⅱ）与三聚硫氰酸的配合物及其衍生物的合成研究（Ⅰ）

本文用ＣｏＣｌ＿２·６Ｈ＿２Ｏ、ＮｉＣｌ＿２Ｈ＿２Ｏ、ＺｎＣｌ＿２·２Ｈ＿２Ｏ与Ｃ＿３Ｎ＿２Ｓ＿３Ｎａ＿３在（ＣＨ＿３）＿２ＳＯ溶剂中反应，得到产物Ⅰ、Ⅱ、Ⅲ；又用Ｃ＿５Ｈ＿５Ｎ与Ⅰ、Ⅱ、Ⅲ反应，得到产物Ⅳ、Ⅴ、Ⅵ。经元素分析、ＩＲ谱、ＵＶ谱表征研究，指认Ⅰ、Ⅱ、Ⅲ为Ｎａ＿３［Ｍ（ＣＨ＿３）＿２ＳＯ（Ｃ＿３Ｎ＿３Ｓ＿３）Ｃｌ＿２（Ｍ－Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ｚｎ（Ⅱ）；ⅣⅤ、Ⅵ为Ｎａ＿２［Ｍ（ＣＨ＿３）＿２ＳＯ（Ｃ＿３Ｎ＿３Ｓ＿３）（Ｃ＿５Ｈ＿５Ｎ）Ｃｌ］（Ｍ－Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ｚｎ（Ⅱ））。     

H_2SO_4－NaCl溶液中奥氏体不锈钢应力腐蚀开裂

在室温下研究了奥氏体不锈钢在Ｈ＿２ＳＯ＿４－ＮａＣｌ溶液中的应力腐蚀开裂敏感性．结果表明，应力腐蚀受外加电位和氯化物浓度的影响．在２．５（Ｈ＿２ＳＯ＿４）－０．２～０．６ｍｏｌ·ｄｍ￣（－３）（ＮａＣｌ）溶液中发生穿晶型应力腐蚀开裂，在极化曲线的活化。钝化过渡区电位区间发生腐蚀开裂。应力腐蚀开裂可归因于位错的滑移台阶出现而导致钝化膜的破裂，再经过选择性电化学溶解而产生．     

阻燃剂聚二溴苯醚的合成

分别利用Ｋ３Ｆｅ（ＣＮ）６，ＣｕＣｌ２·２Ｈ２Ｏ－ＤＭＳＯ，Ｃｕ（ＮＯ３）２·３Ｈ２Ｏ－ＣＨ３ＣＮ，ＣｕＣｌ２·２Ｈ２Ｏ－ＤＭＦ，ＣｕＣｌ２·２Ｈ２Ｏ－ＮａＯＣＨ３，等５种不同催化体系制备了阻燃剂聚二溴苯醚，并详细地研究了其中３种催化体系中的单体浓度、催化剂用量、反应温度以及反应时间对产率的影响，找到了合成的最佳条件，并讨论了几种催化体系的反应机理。５种催化体系所得产物存在着分子量由大到小的分布，     

含氧和氮的四氯化钛络合物催化双环戊二烯开环移位聚合反应的研究

报道了ＴｉＣｌ４·２［Ｃ６Ｈ８Ｏ］（１）;ＴｉＣｌ４·２［Ｃ８Ｈ１１Ｎ］（２）;ＴｉＣｌ４·２［Ｏ（ＣＨ２）４ＣＨ２］（３）;ＴｉＣｌ４·２［Ｃ６Ｈ７Ｎ］（４）;ＴｉＣｌ４·２［Ｃ５Ｈ５Ｎ］（５）;ＴｉＣｌ４·２［Ｃ４Ｈ８Ｏ２］（６）催化双环戊二烯开环移位聚合反应并对６个影响因素进行了讨论,由此得到了优化的反应条件。     

NaS2O4.10H2O复合相变储冷体系的热力学性质

研究制备相互变温度在５－１０℃之间的新型空调储冷材料。方法测定以Ｎａ２ＳＯ４．１０Ｈ２Ｏ为主要成分的代共熔混合体系的相容温度随组成变化的与方。研究抑制过冷和相分层现象的方法结果由质量分数为８０％的Ｎａ２ＳＯ４．１０Ｈ２Ｏ、２％－８％的ＫＣｌ、５％－１０％ＮＨ４Ｃｌ和１％－５％（ＮＨ４）２ＳＯ４组成的低共水合盐体系的相变温度降至９－１０℃结论加入无机直ＫＣｌ,ＮＨ４Ｃｌ（ＮＨ４）２ＳＯ４或ＮａＣｌ降     

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.