3,5—二溴水杨醛缩4—氨基安替比林与铜的荧光猝灭反应？…

研究了新荧光试剂３,５－二溴水杨醛缩４－氨基安替比林（简称：３,５－ＤＢＳＡＡＰ）与铜的荧光猝灭反应体系的最适宜的条件。３,５－ＤＢＳＡＡＰ发射强的荧光,λｅｘ／ｅｎ＝３９３ｎｍ／５１０ｎｍ。在ｐＨ９．０的ＮＨ３－ＮＨ４Ｃｌ缓冲介质中,Ｃｕ（Ⅱ）与３,５－ＤＢＳＡＡＰ在室温反应使其荧光猝灭。据此建立了铜的分析方法,线性范围为１．６×１０＾－５ｍｏｌ／Ｌ￣１．２×１０＾－７ｍｏｌ／Ｌ。用于测定人发中     

吸附溶出伏安法测定水中痕量钴

介绍测定痕量钴的一种方法。在０．０１ｍｏｌ／Ｌ ＮＨ３·Ｈ２Ｏ－ＮＨ４Ｃｌ和１．０×１０＾－６ｍｏｌ／Ｌ酸性铬兰Ｋ（ＡＣＢＫ）溶液中，Ｃｏ（Ⅱ）产生很灵敏的还原波，其峰电位是－０．５２Ｖ（ｖｓ、ＳＣＥ）．Ｃｏ（Ⅱ）的浓度在２．０×１０＾－８￣５．０×１０＾－７ｍｏｌ／Ｌ的范围内与峰电流成直线关系，检测限是５．０×１０＾－９ｍｏｌ／Ｌ。这一方法用于测定水中痕量钴，结果令人满意。     

磺胺嘧啶的极谱伏安行为研究

通过对磺胺嘧啶在多种底液中的极谱伏安行为研究，发现磺胺嘧定在ＢＲ缓冲溶液（ｐＨ４．２）和ＨＡｃ－ＮａＡｃ缓冲液（ｐＨ４．３２）中产生良好的还原峰，峰电位分别为－０．７６Ｖ和－０．７９Ｖ（ｖｓ．ＳＣＥ），在这两种底液中，峰电流或其导数峰高与磺胺嘧啶浓度在５×１０＾－７～４×１０＾－４ｍｏｌ／Ｌ和５×１０＾－６～３×１０＾－４ｍｏｌ／Ｌ范围内呈良好的线性关系，检测限为８×１０＾－７ｍｏｌ／Ｌ，可望用于     

间接原子吸收法测定马拉硫磷的研究

研究了农药马拉硫磷的水解产物和Ａｇ（Ｉ）形成络合物，萃取至氯仿，再用原子吸收法间接测定马拉硫磷的适宜条件，以及各种共存物质的影响。方法的检测下限可达２．２×１０＾－７ｍｏｌ／Ｌ，优于间接分光光度法和使用Ｃｕ（Ⅱ）的间接原子吸收法，工作曲线的线性范围为２．２×１０＾－７～６．０×１０＾－５ｍｏｌ／Ｌ，为马拉硫磷的测定提供了一种新方便，灵敏，准确的方法。     

铜—肌苷的极谱测定

在０．０２５ｍｏｌ／Ｌ Ｈ３ＢＯ３－ＮａＯＨ和０．１ｍｏｌ／Ｌ ＫＣＬ支持电解质中（ｐＨ６．５），Ｃｕ（Ⅱ）－肌苷的络合物在－０．５２Ｖ产生灵敏的极谱波，据此建立了测定肌苷的新方法，该波波高与肌苷浓度在８．０×１０＾－７～２．０×１０＾－５ｍｏｌ／Ｌ范围内成线性关系，此法已成功地用于药物中肌苷的测定，对极谱波的性质和机理进行了讨论。     

离子交换法分离L－谷氨酰胺的工艺研究

就应用强酸性阳离子交换树脂（Ｂ）及强碱性阴离子交换树脂（Ｇ）分离提纯发酵液中Ｌ－谷氨酰胺（Ｌ－Ｇｌｎ）的工艺条件进行了研究，通过单因子及正交试验确定离子交换分离法分离Ｌ－Ｇｌｎ的较佳条件为：强酸性阳离子交换树脂分离Ｌ－Ｇｌｎ的上柱液ｐＨ为３．５，洗脱剂氨水的浓度为０．０３ｍｏｌ／Ｌ，洗脱速度为树脂体积的０．６５％；强碱性阴离子交换树脂分离Ｌ－Ｇｌｎ的上柱液的ｐＨ为８．０，洗脱剂盐酸的浓度为０．０５ｍｏｌ／Ｌ，洗脱速度为树脂体积的１．１５％；使用上述条件提取Ｌ－Ｇｌｎ的得率为３０％左右。     

新试剂5—（3—羟基苯偶氮）—8—氨基喹啉光度法测定铜的研究

合成了新试剂５－（３－羧基苯偶氮）－８－氨基喹啉（ｍ－ＣＰＡＱ）。Ｃｕ（Ⅱ）与ｍ－ＣＰＡＱ反应生成稳定的紫红色１∶３络合物。λｍａｘ为５４４ｎｍ，摩尔吸光系数ε为７．３×１０＾４Ｌ·ｍｏｌ＾－１·ｃｍ＾－１。铜量在０￣１６μｇ／２５ｍｌ范围内符合比尔定律。方法有高的灵敏度和选择性，用于实际样品分析结果满意。     

四氢呋喃在苯中聚合向醋酸酐链转移的研究

本文研究了以苯为溶剂，在醋酸酐存在下，采用乙酰基四氟硼酸盐ＣＨ３ＣＯＢＦ４为催化剂进行四氢呋喃（ＴＨＦ）聚合及链转移的反应，经测定，在１５℃和２１℃下的表观聚合速度常数Ｋｐ分别为７．０３×１０＾－３和１０．１８×１０＾－３Ｌ／ｍｏｌ．ｓ表现链转移速度常数的Ｋｔｒ分别为７．３９×１０＾－４和１２．０１×１０＾－４Ｌ／ｍｏｌ．ｓ     

用间羧基偶氮氯膦─树脂相分光光度法测定钪

本文研究了间羧基偶氮氯膦（ＣＰＡｍＫ）在树脂相中与钪的显色条件。在盐酸介质中，以阴离子交换树脂吸附Ｓｃ－ＣＰＡｍＫ络阴离子。钪与试剂在０．０６ｍｏｌ／Ｌ盐酸介质中生成１：２的螯合物，在波长６７５ｎｍ处有最大吸收，表观摩尔吸光系数ε＝１４０×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。在５０ｍｌ溶液中，１－７μｇＳｃ／５０ｍｌ符合比耳定律，应用于合金中钪的直接测定，结果良好。     

非离子表面活性剂Tween—80存在下5—Br—PADAP分光？…

在ＰＨ３．５０酸性介质中,Ｃｕ（Ⅱ）和Ｎｉ（Ⅱ）在非离子表面活性剂Ｔｗｅｅｎ－８０存在下,与５－Ｂｒ－ＰＡＤＡＰ生成有色配合物,其最大吸收波长位于５７５ｎｍ处;表观摩尔吸光系数分别为７．９７＊１０＾４Ｌ．ｍｏｌ＾－１．ｃｍ＾－１和１．０２＊０１＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１,Ｃｕ（Ⅱ）在０－０．５２ｍｇ．Ｌ＾－１;ｎＩ（Ⅱ）在０－０．４８ｍｇ．Ｌ＾－１范围内符合比耳定律,用拟定的方法测定了钢样中     

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.