CPB存在下DSF与碲显色反应研究

在ＰＨ＝５．０ＨＡｃ－ＮａＡｃ缓冲介质中,溴化十六烷基吡啶（ＣＰＢ）存在下,Ｔｅ（ＩＶ）与过量的二磺基苯基荧光酮（ＤＳＦ）生成１：４稳定络合物,λｍａｘ＝５５５ｎｍ,ε＝１．３５＊１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１,Ｔｅ（ＩＶ）在０－１０μｇ／２５ｍＬ内符合比尔定律。方法用于硒中微量碲的测定,结果令人满意。     

二溴羟基苯基荧光酮分光光度法测定微量锰的研究

研究了在表面活性剂溴化十六烷基三甲胺（ＣＴＭＡＢ）存在下,二溴烃基苯基荧光酮（ＤＢＨ－ＰＦ）分光光度法测定微量锰的最佳显色条件及应用,实验结果表明,在ｐＨ９．４～１０．１的硼砂－ＮａＯＨ缓冲溶液中,锰与ＤＢＨ－ＰＦ形成的１：２的配合物,其最大吸收波长λｍａｘ＝５９０ｎｍ,表观摩尔吸光系数为ε５９０＝１．５１×１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１,锰含量在０～６μｇ／２５ｍｌ范围符合比定律,方法用于     

二苯乙烯荧光蓝S—荧光猝灭法测定茶叶中的微量铁（Ⅲ）

研究了二苯乙烯荧光蓝Ｓ－荧光猝灭测定微量铁（Ⅲ）的实验条件,在ｐＨ５．９的ＨＡｃ－ＮＨ４Ａｃ缓冲溶液中,试剂的最大激发波长λｅｘ＝３７０ｎｍ,最大荧光发射波长λｅｍ＝４５０ｎｍ,Ｆｅ（Ⅲ）与试剂生成的１：３的配合物使试剂的荧光经度减弱,利用荧光猝灭法测定微量铁（Ⅲ）线性范围为０～０．４μｇ／１０ｍｌ,方法用于测定茶叶中的微量铁（Ⅲ）结果满意。     

二溴羟基苯基荧光酮荧光熄灭法测定钛

本文用荧光熄灭法研究了二溴羟基苯基荧光酮（ＤＢＨ－ＰＦ）为指示剂测定Ｔｉ（Ⅳ）。在吐温－８０存在下，Ｔｉ（Ⅳ）与ＤＢＨ－ＰＦ形成１：２紫红色配合物，λｅｘ２＝５０２ｎｍ，λｅｍ＝５２２ｎｍ，检测限为４μｇ／Ｌ，线性范围为４～５６μｇ／Ｌ。该方法灵敏度高，选择性好，适用于检测合金钢及铝合金中的微量钛。     

铁(Ⅲ)-9-(3,5-二溴)水杨基荧光酮-溴化十六烷基三甲基铵显色体系的分光光度法研究及应用

研究了铁（Ⅲ）－９－（３,５－二溴）水杨基荧光酮－ＣＴＭＡＢ三元络合物的显色反应条件,在ｐＨ６．０～７．２的ＫＨ２ＰＯ４－ＮａＯＨ缓冲体系中,铁（Ⅲ）与９－（３,５－二溴）水杨基荧光酮形成１∶４的络合物,其最大吸收波长λｍａｘ＝５９０ｎｍ,表观摩尔吸光系数为１．７２×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,铁含量在０～６μｇ／２５ｍＬ范围内符合比耳定律．方法灵敏度高,选择性较好,络合物稳定,用于牛肝粉和茶叶中微量铁的测定,结果满意     

铁（Ⅲ）—9—（3,5—二溴）水杨基荧光酮—溴化十六烷基三？…

研究了铁（Ⅲ）－９－（３,５－二溴）水杨基荧光酮－ＣＴＭＡＢ三元络合物的显色反应条件,在ＰＨ６．０－７．２的ＫＨ２ＰＯ４－ＮａＯＨ缓冲体系中,铁（Ⅲ）与９（３,５－二溴）水杨基荧光酮形成１：４的络合物,其最大吸收波长λｍａｘ＝５９０ｎｍ,表观魔鬼洋吸光系数为１．７２×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１,铁含量在０－６μｇ／２５ｍＬ范围内符合比耳定律,方法灵敏度高,选择性较好,络合物稳定,用于牛肝     

2,4—二碘基苯基荧光酮光度法测定工业己内酰胺中铁含量

在ｐＨ＝７０的ＮＨ４Ａｃ缓冲介质中,非离子型ＯＰ微乳液存在下,Ｆｅ（Ⅲ）和２,４－二碘基苯基荧光酮（ＤＳＦ）生成蓝色络合物,λｍａｘ＝６４０ｎｍ,ε＝１６２×１０５Ｌ·ｍｏＬ－１·ｃｍ－１,铁含量在０～５μｇ／２５ｍＬ内符合比尔定律,方法用于工业己内酰胺中铁的测定,结果满意     

锌—水杨基荧光酮—CTMAB体系荧光特性的研究及应用…

研究了锌－水杨基荧光酮（ＳＡＦ）－溴化十六烷基三甲胺（ＣＴＭＡＢ）体系的荧光特性。实验结果表明，在ｐＨ９．７５￣１０．３５的Ｈ３ＰＯ４－ＨＡｃ－Ｈ３ＢＯ３缓冲介质中，产生荧光熄灭程度最大的激发波长为λｅｘ＝５２４ｎｍ，荧光波长为λｅｍ＝５４９ｎｍ。当锌含量０￣２．４μｇ／２５ｍｌ范围内，荧光熄灭程度与浓度呈线性关系，藉以测定微量锌。方法简便，快速，稳定性高，可应用于食品及环境水样中微量锌的测定。     

锌-水杨基荧光酮-CTMAB体系荧光特性的研究及应用──食品中微量锌的快速测定

研究了锌－水杨基荧光酮（ＳＡＦ）－溴化十六烷基三甲胺（ＣＴＭＡＢ）体系的荧光特性．实验结果表明，在ｐＨ９．７５～１０．３５的Ｈ３ＰＯ４－ＨＡｃ－Ｈ３ＢＯ３缓冲介质中，产生荧光熄灭程度最大的激发波长为λｅｘ＝５２４ｎｍ，荧光波长为λｅｍ＝５４９ｎｍ．当锌含量０～２．４μｇ／２５ｍｌ范围内，荧光熄灭程度与浓度呈线性关系，藉以测定微量锌．方法简便，快速，稳定性高，可应用于食品及环境水样中微量锌的测定．     

二苯乙烯荧光蓝-S荧光猝灭测定微量锌(Ⅱ)

研究了二苯乙烯荧光蓝－Ｓ荧光猝灭测定微量锌（Ⅱ）的实验条件．在ｐＨ６．０的Ｈ３ＰＯ４－Ｈ３ＢＯ３－ＨＡｃ－ＮａＯＨ缓冲溶液中，试剂的最大激发波长λｅｘ＝３６７ｎｍ，最大荧光发射波长λｅｍ＝４５７ｎｍ；Ｚｎ（Ⅱ）与试剂生成的１∶２的配合物使试剂的荧光强度减弱；利用荧光猝灭法测定微量锌（Ⅱ），线性范围为０～０．８μｇ／１０ｍｌ；方法用于测定食品中、人发中的微量锌（Ⅱ），结果满意．     

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.