逆胶束介导的化学发光测定碘

十六烷基三甲基氯化烷(CTAC)在氯仿/环己烷(体积比为6 5)-少量水(含有鲁米诺)溶剂所形成的逆胶束介质中, 鲁米诺和碘的化学发光可以得到大大增强,据此,采用静态流动注射技术建立了简易、快速测定碘的化学发光新方法.详细研究了R值([C(H20)/C(表面活性剂)])、表面活性剂CTAC的浓度、pH值、鲁米诺浓度对化学发光信号强度的影响.在优化的实验条件下测定碘的线性范围为0.005～2.0 μg/mL,检出限(3σ)为0.001μg/mL,对浓度为1.0μg/mL的碘标准溶液进行了11次平行测定,相对标准偏差为3.83%.将本法用于食盐中碘的测定,结果令人满意.     

流动注射-化学发光法测定色氨酸

在酸性条件下,色氨酸对Ru(phen)32+-Ce(Ⅳ)反应体系化学发光有显著的增强作用,据此建立了流动注射-化学发光法检测色氨酸的新体系.对影响流动注射化学发光的各因素进行了实验研究,优化了反应条件和各项测定参数.结果表明,在优化条件下,色氨酸在7.5×10-8～8 0×10-6g/mL的浓度范围内发光强度与其浓度呈良好的线性关系,检测限(3σ)为5 16×10-8g/mL,对浓度为2 5×10-7g/mL的色氨酸进行11次平行测定,相对标准偏差(RSD)为2 2%.对合成样品中色氨酸测定的回收率在99 1%～100.8%之间,采样频率为90次/h.     

高锰酸钾直接氧化化学发光法测定甲磺酸酚妥拉明

基于盐酸介质中高锰酸钾直接氧化甲磺酸酚妥拉明产生化学发光这一现象,建立了一种简易、快速测定甲磺酸酚妥拉明的流动注射化学发光新方法.在优化的实验条件下,本法测定甲磺酸酚妥拉明的线性范围为0 05～6μg/mL,检出限为0 01μg/mL,对浓度为4 0μg/mL的甲磺酸酚妥拉明进行11次平行测定,得到相对标准偏差为3 0%.将本法用于针剂及尿样和血样中甲磺酸酚妥拉明的测定,结果令人满意.     

化学发光法测定防己中的防己诺林碱

在酸性条件下,高锰酸钾氧化防己诺林碱产生化学发光,对影响化学发光强度的因素进行了实验和探讨,建立了高锰酸钾化学发光体系测定防己诺林碱的新方法.防己诺林碱浓度在0.13~300μg/mL的范围内成良好线性关系,检出限(DL)为0.078μg/mL,相对标准偏差(RSD)为2.6%.该方法已成功用于防己中防己诺林碱的含量测定,回收率为98%.此外借助紫外、荧光和化学发光等光谱手段,对体系的化学发光机理进行了初步探讨.     

流动注射化学发光测定盐酸多巴酚丁胺

基于盐酸多巴酚丁胺对高锰酸钾氧化鲁米诺产生的化学发光的增强作用建立了一种测定盐酸多巴酚丁胺的新方法.在优化的实验条件下,测定盐酸多巴酚丁胺的线性范围为1 0×10-3～0 5μg/mL,检出限(3σ)为5 0×10-4μg/mL,对浓度为0 4μg/mL的盐酸多巴酚丁胺进行11次平行测定,其相对标准偏差(RSD)为3 39%.将本法用于注射液、血样以及尿样中盐酸多巴酚丁胺的测定,结果令人满意.     

反向流动注射化学发光法测定盐酸氯丙嗪

次氯酸钠氧化鲁米诺产生化学发光,盐酸氯丙嗪能抑制该反应的发光强度,据此结合反相流动注射技术建立了一种测定盐酸氯丙嗪的新方法.在优化的实验条件下,本法测定盐酸氯丙嗪的线性范围为0 1～10μg/mL,检出限为8 0×10-2μg/mL,对浓度为0 5μg/mL的盐酸氯丙嗪进行11次平行测定,其相对标准偏差为0 88%.本法应用于针剂、片剂及尿样中盐酸氯丙嗪含量的测定,结果令人满意.     

基于鲁米诺的流动注射化学发光法测定硫酸链霉素

建立了一种简易、快速测定硫酸链霉素的流动注射化学发光法.本法基于在强碱性介质中,硫酸链霉素能增强铁氰化钾氧化鲁米诺产生化学发光,加入亚铁氰化钾能大大降低这一体系的背景发光强度.在优化的实验条件下该法测定硫酸链霉素的线性范围为5～1000μg/mL,检出限(3σ)为0 6μg/mL.对100μg/mL的硫酸链霉素进行11次平行测定,其RSD为2 2%.将本法用于硫酸链霉素制剂及合成样品的分析,结果令人满意.     

KMnO4-HCHO化学发光反应体系测定白藜芦醇

在酸性介质中,高锰酸钾氧化白藜芦醇产生微弱的化学发光,甲醛对此体系有增敏作用,据此建立了一种化学发光测定白藜芦醇的新体系．在优化的实验条件下,白藜芦醇的浓度在0．005～1．000μg／mL范围内与发光强度呈良好的线性关系,方法的检测限为1．0ng/mL．对浓度为0．1μg／nL的白藜芦醇连续进样11次,其RSD：0．76％．将本方法用于红葡萄酒中自藜芦醇的测定并做同收率实验,回收率为81％～116％．同时,在基于化学发光和紫外的基础上,对可能的机理进行了探讨．     

环境水样中碘的流动注射化学发光分析方法

在酸性条件下,高锰酸钾氧化吡罗红B产生化学发光,I-的加入对该体系的化学发光有显著的增强作用,据此建立了流动注射化学发光法测定环境水样中I-的新方法.在优化的实验条件下,I-的质量浓度在8.0×10-4～1.0×10-1μg/mL范围内与发光强度呈良好的线性关系,检出限为1.6×10-4μg/mL.对0.1μg/mL I-标准溶液进行11次平行测定,相对标准偏差为0.87%.将本法应用于环境水样中I-的测定,取得满意结果.     

流动注射化学发光测定抗坏血酸及其机理探讨

研究发现,N-溴代琥珀酰亚胺(NBS)在碱性介质条件下,可以氧化抗坏血酸,在荧光素的增敏作用下,产生较强的化学发光.基于此建立了测定痕量抗坏血酸的流动注射化学发光新方法.抗坏血酸在0.05～100μg/mL的浓度范围内与化学发光强度呈良好的线性关系,检测限为(3σ)8.7ng/mL,对0.5μg/mL的抗坏血酸连续测定11次,相对标准偏差为2.3%.将本方法用于抗坏血酸制剂和片剂含量的分析,并与药典标准方法对照,其结果比较一致,说明该方法准确、可靠.     

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).     

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.