钾铵离子选择电极的研制及其在土壤肥料分析中的应用

以亚戊基双（４＇－苯并１５－冠－５）为中性载体，制得对Ｋ￣＋、具有相近响应的ＰＶＣ膜离子选择性电极。Ｎｅｒｎｓｔ线性响应范围１×１０￣（－１）～８×１０￣（－５）ｍｏｌ／Ｌ；响应斜率为５３ｍＶ／ＰＭ；对Ｌｉ￣＋、Ｎａ￣＋、Ｃａ￣（２＋）、Ｍｇ￣（２＋）、Ｂａ￣（２＋）的选择性系数分别为６×１０￣（－５），５×１０￣（－３），３×１０￣（－４），４×１０￣（－４），８×１０￣（－４）。用本电极可快速测出土壤肥料中速效氮、钾的含量。     

生物碱—半导体场效应传感器的研制及应用

研制了生物碱（秋水仙碱或毛果芸香碱）－半导体场效应传感器，并测得了器件的浓度线性范围：２．５０×１０＾－＾５－４．００×１０＾－＾３ｍｏｌ／Ｌ（秋水仙碱）；９．９０×１０＾－＾５－５．０５×１０＾－＾３ｍｏｌ／Ｌ（毛果芸香碱）。该传感器可应用于药物制章占秋水仙碱的测定，方法简便，效果良好。     

生物碱－半导体场效应传感器的研制及应用

研制了生物碱（秋水仙碱或毛果芸香碱）－半导体场效应传感器，并测得了器件的浓度线性范围：２．５０×１０－５～４．００×１０－３ｍｏｌ／Ｌ（秋水仙碱）；９．９０×１０－５～５．０５×１０－３ｍｏｌ／Ｌ（毛果芸香碱）．该传感器可应用于药物制剂中秋水仙碱的测定．方法简便，效果良好．     

二次导数伏安法同时测定食品中苋菜红、胭脂红色素含量

用线性扫描吸附伏安法研究了Ｔｒｉｓ－醋酸底液中（ｐＨ８．７），食用色素苋菜红，胭脂红在悬汞电极上的伏安特性，两色素分别在－０．５１Ｖ和－０．６７Ｖ（ｖｓ．ＳＣＥ）产生强吸附还原峰，导数峰电流与其浓度分别在５．０×１０（－１０）～５．０×１０（－７）及５．０×１０（－９）～１．０×１０（－７）ｍｏｌ／Ｌ范围内呈良好线性关系，本法可不经分离直接测定食品、药物胶囊中两色素各自的含量．     

痕量铁的在线监测研究

根据在邻菲罗啉的活化下Ｆｅ３＋对ＫＩＯ４氧化罗丹明Ｂ褪色的催化作用，利用流动注射技术，建立了一个痕量铁的在线监测的新方法．该方法Ｆｅ３＋的浓度在０～８×１０－５ｇ／Ｌ和８×１０－５～２．８×１０－４ｇ／Ｌ范围内分段与褪色效应呈良好线性相关，检出限为：１×１０－７ｇ／ＬＦｅ３＋（３δ）；ＲＳＤ≤１．６％（ｃ＝５×１０－５ｇ／Ｌ，ｎ＝１１）．利用该方法对水样中铁进行在线监测，效果满意     

脲酶电极用于血清中脲测定的研究

将脲酶用戊二醛化学交联固定到单纤维尼龙网上，与氨气敏电极组合成结构简单的脲酶电极，此电极对脱有良好的响应特性，对脲浓度对数的响应线性范围为７×１０（－５）～２×１０（－２）ｋｍｏｌ／ｍ３，斜率为５２ｍＶ，相关系数０．９８８，电极寿命大于２０天，用于血清中脲的测量时样品不需要预处理，并与分光光度法所得结果有较好的一致性。     

铀试剂Ⅲ离常数的测定

用 ｐＨ测定法、溶解度法和分光光度法测定了铀试剂Ⅲ的八个离介常数,在离子强度等于０．１时它们分别为： Ｋ１＝１３±１．２; Ｋ２＝（２．４±１．１）×１０－２, Ｈ３＝（９．６±１．１）××１０－４;Ｈ４＝（３．３±０．１）× １０－５;Ｋ５＝（５．４±０．３）×１０－８;Ｋ６＝（１．０±０．２）×１０－９;Ｋ７＝（４．７±０．４）×１０－１１;Ｋ８＝（４．７±０．５）×１０－１３。并根据这些常数作出了试剂离介形式随ＰＣＨ的分布图。     

电位溶出分析法同时测定罐头食品中痕量铅锡

利用不除氧电位溶出分析法成功地测定了溶出电位相近的Ｐｂ、Ｓｎ两元素。以０．０５ｍｏｌ／Ｌ草酸为介质，调节溶液ＰＨ＝１．０，以溶解氧做氧化剂，静止溶出，两元素均有分高清晰的平台出现。Ｐｂ、Ｓｎ的线性范围分别为：２．０×１０－９～２．０×１０－７ｍｏｌ／Ｌ和２．０×１０－８～２．０×１０－６ｍｏｌ／Ｌ。当富集时间为４ｍｉｎ时，Ｐｂ、Ｓｎ的检测限分别为５．０×１０－１０ｍｏｌ／Ｌ和５．０×１０－９ｍｏｌ／Ｌ。此法已成功地应用于测定罐头食品中的痕量Ｐｂ、Ｓｎ。     

博莱霉素A5与DNA结合序列特异性研究

利用荧光淬灭法研究了博莱霉素Ａ５与小牛胸腺ＤＮＡ及ＤＮＡ类似物多聚ｄＧ．Ｃ，多聚ｄＡ．Ｔ的相互作用其作用力为疏水作用及氢键，结合常数分别为０．５７×１０６５，１．０７×１０＾５，０．４７×１０＾５ｍｏｌ＾－１，Ｌ，每结合一个博莱霉素Ａ４所需碱基对数分别为２２－２３，５－６，２７－２８，上述结果表明博莱霉素Ａ５与ＤＮＡ的结构具有ＧＣ序列特异性。     

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     

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.