多聚磷酸催化对乙基月桂苯酮合成及其结构鉴定

苯酮是三次采油用烷基苯磺酸盐表面活性剂的重要中间体，传统的三氯化铝作催化剂活性较高，使得副产物多难以分离．采用多聚磷酸代替三氯化铝作温和的催化剂合成了对乙基月桂苯酮，取得了很好的结果，精制产品的气相色谱纯度达93％以上．给出了产品的熔点和沸点数据，通过红外、核磁共振波谱等分析手段证明其结构正确，气质联用证明相对分子质量相吻合，并推断了多聚磷酸Friedel-Crafts酰化反应均机理。     

STN液晶中间体的合成

综述了三种ＳＴＮ液晶中间体的合成方法，并较详细地介绍了作者合成烷基苯乙酮、烷基苯甲酸和烷基环己基甲酸的实验方法及结论．三种中间体经高纯处理用测定沸点、熔点、质谱、红外光谱、元素分析等方法确定了结构，并用色谱测定了产品纯度     

烷基苯的沸点与分子结构之间定量关系的探讨

本文用图论方法探讨了烷基苯的沸点与其分子结构之间的关系，提出了一个既能合理表征烷基沸点与分子结构关系，又能准确预测沸点的定量关系式，计算结果表明，烷基苯沸点计算值都很按近实验值，平均误差０．０５％。     

配位不饱和铁—邻菲罗啉（2,2‘—联吡啶）配合物对烷基？…

以铁－邻菲罗啉及铁－２,２′－联吡啶配合物为催化剂,常压氧气为氧化剂,在１１０℃对乙基苯、正丙苯、１正丁苯及对二甲苯等烷基苯进行氧化,得到了相应的酮和醇;讨论了温度、底物与催化剂物质的量之比及烷基苯侧链对催化剂催化性能的影响。     

配位不饱和铁-邻菲啰啉(2,2'-联吡啶)配合物对烷基苯的催化氧化

以铁-邻菲啰啉及铁-2,2'-联吡啶配合物为催化剂,常压氧气为氧化剂,在110℃对乙基苯、正丙苯、正丁苯及对二甲苯等烷基苯进行氧化,得到了相应的酮和醇;讨论了温度、底物与催化剂物质的量之比及烷基苯侧链对催化剂催化性能的影响.     

配位不饱和铁邻菲啉(2,2′-联吡啶)配合物对烷基苯的催化氧化

以铁 邻菲啉及铁 2 ,2′ 联吡啶配合物为催化剂 ,常压氧气为氧化剂 ,在 110℃对乙基苯、正丙苯、正丁苯及对二甲苯等烷基苯进行氧化 ,得到了相应的酮和醇 ;讨论了温度、底物与催化剂物质的量之比及烷基苯侧链对催化剂催化性能的影响 .     

2—烷基苯并咪唑的合成及结构特征

以邻苯二胺与脂肪酸为原料，合成２－烷基苯并咪唑，通过选择反应体系，温度，时间和催化剂，获得一条满意的合成工艺路线，并通过熔点测定，红外光谱，质谱等方法，对产物进行结构表征。     

2-烷基苯并咪唑的合成及结构表征

以邻苯二胺与脂肪酸为原料，合成２－烷基苯并咪唑。通过选择反应体系、温度、时间和催化剂，获得一条较满意的合成工艺路线，并通过熔点测定、红外光谱、质谱等方法，对产物进行结构表征。     

一氧化氮与有机底物反应的研究概述

NO是一个双原子无机小分子,也是一个自由基分子,分子量为30,室温下是无色气体,其液态、固态均为无色,沸点-151.8℃,熔点-163.6℃。25℃,1.01×105Pa大气压条件下,在水中溶解度为1.8×     

链烷烃分子结构特征与熔点的变化关系

在分析链烷烃的分子结构特征基础上，根据分子热力学中的Lennard-Jones势能函数式，提出了链烷烃的熔点计算模型，以正癸烷和4种主链碳原子数分别为4、5、6、7的支链烷烃为模型化合物进行相关分析，得出模型方程，将其用于30种含碳原子数为2－31的直链烷烃和48种主链碳原子数为4－7的支链烷烃的熔点进行估算，平均绝对误差为4．70℃，平均相对误差为2．59％，其估算精度远优于已有的献报导。     

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)

正~~     

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.