溶致变色荧光法测定丙酮中的水

３－羟基－４－Ｎ,Ｎ－二甲胺基黄酮具有强的溶致变色性质,其丙酮溶液中含有少量水时,具有正常Ｓｔｏｋｅｓ位移峰的发射波长红移,荧光强度显著增加,基于此,本研究提出了一个新的丙酮中水含量测定的荧光分析方法,在体积分数为０．１－１０．０％的水含量范围内,荧光强度与水的体积分数线性相关,对０．５％及５．００％的水测定的相对标准偏差分别为４．２％和２．３％,丙桐中可能存在的微量醇类和醛类杂质对无影响,该法简     

反相高效液相色谱法测定补肾益寿颗粒中淫羊藿…

应用反相高效液相色谱法，建立了测定纯中约制剂补肾益寿颗粒中活性成分淫羊藿甙含量的方法。样品以７０％乙醇超声波振荡提取，在下列色说条件下测定：固定相ｓｈｉｍｐａｃｋ ＣＬＣ－ＯＤＳ；流动相乙腈－甲醇－０．１ｍｏｌ／Ｌ磷酸二氢钠；流速１．０ｍｌ／ｍｉｎ；检测波长２７０ｎｍ；线性范围０．１１５－０．６９０μｇ；加样回收率９９．０８±１．７６％；日仙精密度１．０５－１．１９％，该法简便，快速，准确。     

5‘—硝基水杨基荧光酮荧光猝灭法测定微量锡

基于Ｓｎ－５‘－硝基水杨基荧光酮－Ｔｗｅｅｎ－８０体系的荧光猝灭效应，提出一种测定微量锡的新荧光分析方法。在０．８－１．２ｍｏｌ／Ｌ的硫酸介质中，在Ｔｗｅｅｎ－８０存在下，锡与５’－Ｎ－ＳＡＦ形成摩尔比为１：４的橙红色络合物。该体系存在两个激发峰，其激发波长分别为λｅｘ１＝４７５ｎｍ，λｅｘ２＝５０５ｎｍ，发射波长λｅｍ＝５２５ｎｍ。     

铕—二苯甲酰甲烷—邻菲罗啉—CTAB体系的荧光研究

在阳离子表面活性剂ＣＴＡＢ存在下，研究了铕－二苯甲酰甲烷－邻菲罗啉三元配合物在水溶液中荧光发射的性质。采用３７０ｎｍ光波激发，配合物的最大特征荧光发射波长为６１４ｎｍ。当ＣＴＡＢ的浓度达到０．４５ｍｍｏｌ·Ｌ＾－１时，配合物的荧光强度达到最大，Ｅｕ＾３＋浓度在０￣０．１ｎｇ·Ｌ＾－１范围内，它与荧光强度有良好的线性关系。实验表明，检出下限可达１ｆｇ·Ｌ＾－１。     

新显色剂5－（4＇－氯－2＇羧基苯偶氮）绕丹宁与银的显色反应及其应用研究

在ＴｒｉｔｏｎＸ－１００存在下，ｐＨ＝５．０～５．５时，新试剂Ｃｌ－ＲＡＣＰ与银生成配合物，其最大吸收波长为５００ｎｍ，配合物的配位比为１：２，表观摩尔吸光系数为１．１×１０￣５·Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。Ａｇ（Ⅰ）的浓度在０～２．０μｇ·ｍｌ￣（－１）范围内符合比尔定律。该法用于阳极泥和废定影中银的测定，结果较满意，相对标准偏差为１％。     

反相高效液相色谱法测定补肾益寿颗粒中淫羊藿甙的含量

应用反相高效液相色谱法，建立了测定纯中药制剂补肾益寿颗粒中活性成分淫羊藿甙含量的方法．样品以７０％乙醇超声波振荡提取，在下列色谱条件下测定：固定相ｓｈｉｍｐａｃｋＣＬＣ－ＯＤＳ（１５０ｍｍ×６ｍｍ，５μｍ）；流动相乙腈甲醇－０．１ｍｏｌ／Ｌ磷酸二氢钠（６∶４６∶５０，ｖ／ｖ）；流速１．０ｍｌ／ｍｉｎ；检测波长２７０ｎｍ；线性范围０．１１５～０．６９０μｇ（ｒ＝０．９９９９）；加样回收率９９．０８±１．７６％；日内精密度１．０５％～１．１９％．该法简便、快速、准确     

荧光素荧光法测定痕量硫氰酸根的研究

报道了以荧光素为指示剂,荧光法间接测定痕量ＳＣＮ－的新方法．在ｐＨ＝５．５～７．５的中性缓冲溶液中,Ｉ２与荧光素反应,使荧光素的荧光猝灭．当加入ＳＣＮ－时,ＳＣＮ－和Ｉ２反应使体系荧光增强,该体系激发波长、发射波长分别为４９４ｎｍ和５１５ｎｍ,ＳＣＮ－含量在１．０～６０μｇ／Ｌ范围内呈良好的线性关系,检测下限为１．０μｇ／Ｌ．该方法灵敏度高,选择性好,用于吸烟人和非吸烟人唾液中痕量ＳＣＮ－测定,结果令人满意．     

硫唑嘌呤氧化反应的荧光光谱法研究

研究了硫唑嘌呤的水解产物与ＫＭｎＯ４的氧化作用，提出了高灵敏测定硫唑嘌呤的荧光光度分析新方法。在碱性介质中，将硫唑嘌呤通过沸水浴加热水解－ＫＭｎＯ４氧化，使其转化成６－嘌呤磺酸钠，该产物不仅具有强的荧光且稳定性好。本体系的激发波长为２８６ｎｍ，发射波长为３９７ｎｍ，荧光强度Ｆ与硫唑嘌呤的含量在０．０１～０．５ｍｇ／Ｌ范围内呈线性关系，检测限为０．００５ｍｇ／Ｌ。应用该法于片剂中硫唑嘌呤含量的测定，     

近红外荧光探针法测定核酸的研究

以阳离子花菁染料为荧光探针, 依近红外荧光猝灭测定核酸． 最大激发及发射波长分别为７６５ 、７９０ｎｍ ． 核酸测定的线性范围为０－０８ ～１－２μｇ／ｍ Ｌ（ＣＴＤＮＡ 及ＳＭ ＤＮＡ） , ０－１ ～１－６μｇ／ｍＬ（ｙｅａｓｔ ＲＮＡ） ．     

反相高效液相色谱法测定3H状元胶囊中的1α—羟基维生素D3

使用反外ＨＰＬＣ法测定３Ｈ状元胶囊中的１α－羟基维生素Ｄ３，固定相为Ｃ１８，流动相为乙腈：水（９７：３），测定波长为２６５ｎｍ标样线性范围为０．１～１．０μｇ／ｍＬ（ｒ＝０．９９８８，ｎ＝５）最低检出率为０．５ｎｇ，天内天间精密度分别为１．４１％（ｎ＝１０）和２．７２％（ｎ＝３）平均回收率为９９．１％（ＲＳＤ＝２．７８％），该方法用于测定３Ｈ求元胶囊的１α－羟基维生素Ｄ３，取得较满意的结果。     

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)

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.     

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.