苯氧基亚胺钛化合物催化甲基丙烯酸丁酯聚合

3,5-二叔丁基水杨醛与苯胺缩合得到3,5-二叔丁基水杨醛缩苯胺配体1a;配体1a的钠盐与TiC l4.2THF反应得到相应的水杨醛亚胺钛配合物1;以色谱-质谱联用(GC/MS)、核磁共振氢谱(1H NMR)、元素分析等手段表征了中间化合物及配合物1;在三异丁基铝助催化下,钛配合物1高效催化甲基丙烯酸丁酯(BMA)本体聚合;在反应温度为60℃,BMA/三异丁基铝/钛配合物1(摩尔比为2 000∶20∶1)反应18 h,84.28%BMA转化为粘均分子量为12.80万聚甲基丙烯酸丁酯。     

N-(3-羧基水杨醛)-N''-(5-氯水杨醛)缩乙二胺Cu2 Ni异三核配合物的合成、表征与磁性

利用不对称双Schiff碱配体N-（3-羧基水杨醛）-N’-（5-氯水杨醛）缩乙二胺（H3L）及其Cu（Ⅱ）单核配合物HCuL（L3H,L的脱氢阴离子,氧化数为3）合成了Cu—Ni异金属三核配合物（CuL）Ni（CuL）,并通过IR谱、电子光谱、元素分析、热重分析等方法对其进行了表征和性质研究,其组成为Cu2NiC34H27O95N4Cl2;在5-300K温度范围,测定了该异金属三核配合物的变温磁化率,并拟合了测定结果,表明该三核配合物的Cu—Ni金属离子间为反铁磁偶合,磁偶合因子J=-88．7cm^-1,g=2．23．     

N-（3-羧基水杨醛）-N’-（5-氯水杨醛）缩乙二胺Cu2Ni异三核配合物的合成、表征与磁性

利用不对称双Schiff碱配体N-（3-羧基水杨醛）-N’-（5-氯水杨醛）缩乙二胺（H3L）及其Cu（Ⅱ）单核配合物HCuL（L3H,L的脱氢阴离子,氧化数为3）合成了Cu—Ni异金属三核配合物（CuL）Ni（CuL）,并通过IR谱、电子光谱、元素分析、热重分析等方法对其进行了表征和性质研究,其组成为Cu2NiC34H27O95N4Cl2;在5-300K温度范围,测定了该异金属三核配合物的变温磁化率,并拟合了测定结果,表明该三核配合物的Cu—Ni金属离子间为反铁磁偶合,磁偶合因子J=-88．7cm^-1,g=2．23．     

N-(2,6-二烷基苯基)-2-呋喃甲酰胺镍配合物的合成及其催化甲基丙烯酸甲酯的聚合

以呋喃甲酸、5-叔丁基-2-呋喃甲酸为起始物,在PCl3作用下,与苯胺、2,6-二烷基苯胺反应(烷基为乙基、异丙基),合成了4个N-(2,6二-烷基苯基)-5-叔丁基-2-呋喃甲酰胺有机配体,同时以N-(2,6-二乙基苯基)-5-叔丁基-2-呋喃甲酰胺与trans-[NiCl(Ph)(PPh3)2]反应合成了1个新的呋喃甲酰胺镍配合物,并采用核磁共振(1H-NMR)、红外光谱(IR)、质谱(MS)及元素分析(EA)对它们的结构进行了表征。以该配合物为催化剂,在甲基铝氧烷(MAO)作用下对甲基丙烯酸甲酯进行了催化聚合,以配合物中等的催化活性得到了富含间规结构的聚甲基丙烯酸甲酯(PMMA)。     

新型双穴配体及其Cu(Ⅱ)、Ni(Ⅱ)配合物的合成

合成了一种未见报道的配体N，N'-双（2-水杨醛缩氨基苯基）草酸二酰胺，简写（H4L），并合成了它的Cu（Ⅱ）、Ni（Ⅱ）两种新配合物，通过元素分析、红外、摩尔电导等表征，结果表明H4L与Cu（Ⅱ）、Ni（Ⅱ）分别形成1：2和1：1型的配合物。     

新型钌(Ⅱ)三联吡啶配合物的合成及光电性质

合成了含有配体4,4″二（P-甲基苯基吡啶）-2,2′：6′,2″-三联吡啶,4,4′-二羧基-2,2′-二联吡啶以及异硫氰根配体的钌（Ⅱ）三联吡啶配合物（Ru-1）．通过紫外可见吸收光谱、发射光谱、循环伏安、基质辅助激光解吸电离-时间飞行质谱（MALDI-TOF-MASS）以及元素分析对其结构进行了表征．研究了该配合物作为光敏化剂制备的纳米晶太阳能电池的光电转化性质．结果表明：钌（Ⅱ）三联吡啶配合物在570nm以后仍有较强的金属-配体电荷转移（MLCT）态吸收,有利于改善染料敏化纳米晶太阳能电池对太阳光长波方向的吸收．以其作为敏化剂制备电池,其光电转化效率为0．68％．     

碱土金属希夫碱配合物的合成及表征

合成了N，N’-双(2-水杨醛缩氨基苯基)1，3-丙二酸二酰胺配体及其碱土金属配合物．通过元素分析、IR，UV分析，结果表明：配体与镁、钙、锶、钡均形成1：1型的配合物．并对配体及配合物的荧光性质做了初步的研究．     

N-(3-羧基水杨醛)-N''''-(5-氯水杨醛)缩乙二胺铜单核及Cu2Mn异三核配合物的合成、表征与磁性

合成了不对称双Schiff碱（H3L）Cu（Ⅱ）单核配合物HCuL（H3L=N-（3-羧基水杨醛）-N’-（5-氯水杨醛）缩乙二胺）和异金属三核配合物（CuL）2Mn，并通过IR谱、电子光谱、元素分析等方法对其进行了表征，其组成为Cu2MnC34H26O9N4Cl2；在5-300K温度范围，测定了这些三核配合物的变温磁化率，并拟合了测定结果，表明这些化合物金属离子间均为反铁磁耦合，磁耦合因子J=-9．24cm^-1．     

二(2,4,6-三叔丁基酚基)铜的合成、分子结构和催化己内酯聚合活性

2，4，6-三叔丁摹酚钠与氯化亚铜或氯化铜反应．生成无色晶体二（2,4，6-三叔丁基酚基）铜。产物结构经过X-光单晶衍射分析表征。该配合物具有催化己内酯聚合反应的活性。     

硫代磷酰肼席夫碱及其金属配合物的合成与生物活性

合成了O，O‘-二乙基硫代磷酰肼5-溴水杨醛席夫碱及其Cu（Ⅱ），Co（Ⅱ），Zn（Ⅱ）配合物，所合成的席夫碱配体及配合物均未见文献报道。用元素分析，UV,IR对所有的新化合物进行了表征，对席夫碱配体还进行了MS和^1H NMR等结构表征。测定了化合物杀来棉铃虫的活性及对水稻幼苗SOD活力的影响。     

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.     

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.     

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.