HPLC法测定金匮肾气丸中马钱苷、芍药苷的含量

建立一种方法用于同时测定金匮肾气丸中马钱苷、芍药苷的含量．应用高效液相色谱法测定,分离条件Symmetry C18柱（4．6min×250mm,5μm）,乙腈-1％冰醋酸溶液（14：86）为流动相,流速为1mL／min,柱温为30℃、马钱苷、芍药苷线性范围分别为0.16～1.6μg（r=0．9997）,0.18～1.8μg（r=0．9999）,平均加样回收率分别为99.13％（RSD=1．43％）,99.02％（RSD=2．17％）、方法简便,快速,可靠,为金匮肾气丸进一步研究奠定基础．     

酸性高锰酸钾化学发光体系测定针剂中的头孢噻肟钠

头孢噻肟钠碱性水解产物与高锰酸钾反应可产生微弱的化学发光，多聚磷酸对其有强烈的增敏作用，据此建立了一种简单、快捷、灵敏的流动注射化学发光测定头孢噻肟钠的新方法．化学发光信号ICL与头孢噻肟钠质量浓度C在0．02-20μg／mL和20～120μg／mL范围内呈良好的线性关系，回归方程分别表示为ICL=3.169＋20．961C（r=0．9998，n=9）；ICL=147．5＋14．752C（r=0．9994，n=9），方法的检出限为20ng／mL．对5μg／mL头孢噻肟钠进行11次平行测定，相对标准偏差为0．8％，用本法对针剂中头孢噻肟钠的含量进行了测定，得出了令人满意的结果．     

乳香中乙酸辛酯含量的测定

目的：建立气相色谱法测定乳香中乙酸辛酯含量．方法：采用气相色谱法Agilent6890N气相色谱仪,检测器FID,Agilent19091-413HP-5毛细柱（30m×0．32mm×0．25μm）．结果：乙酸辛酯含量在26．40～132．00μg范围内呈良好线性关系（r=0．9993）,平均回收率为100％,RSD为2．76％（n=5）．结论：气相色谱法测定乳香中乙酸辛酯含量方法操作简单,结果准确,重现性好．     

利用胶束电动色谱技术用于抗生素测定

采用毛细管胶束电动色谱技术对阿莫西林、氯唑两林、头孢氨苄、头孢噻肟、头孢唑林5种抗生素进行分离．18kV电压下，在溶有100mmol／LSI）S的硼酸盐缓冲溶液（20mmol／L，pH-8．9）中，采用二极管阵列检测器．在9min内可以完成对此5种抗生素的分离检测．线性范围0．1～250μg／mL．相关系数为0．9976～0．9994，检测限为0．01～0．13μg／mL．运用此方法对3种药物形式的抗生素进行同时检测．日间和日内的RSDs分别为3．95％～8．12％和1．51％～2．86％。迁移时间的日间和日内的RSDs分别为0．47％～1．11％和0.032％～0.295％．在尿样的测定中，日问和日内的RSDs分别为1．31％～6.07％和0.66％～7．65％，回收率为90％～110％．此外．还对分离条件对抗生素的迁移行为的影响做了理论探讨．     

用气相色谱法测定液状食品中四种对羟基苯甲酸酯类防腐剂

用毛细管气相色谱法实现了液状食品中4种防腐剂(对羟基苯甲酸甲酯、对羟基苯甲酸乙酯、对羟基苯甲酸丙酯、对羟基苯甲酸丁酯)的分离测定，各组分回收率为91．15～107．7％，检出限为0．5μg／mL，线性范围为0．2μg／mL～80μg／mL．线性相关系数大于0．999。     

毛细管气相色谱法检测替加环素中有机溶剂残留

建立了毛细管气相色谱法测定替加环素原料药中7种有机残留溶剂的分析方法．采用ZB-624熔融石英毛细管柱（30m×0．53mm×3μm）,FID检测器,以二甲基亚砜为溶剂．其中甲醇、异丙醇、异丙醚、二氯甲烷、四氢呋喃与甲苯的测定采用顶空进样法,柱温40℃保持9min,以20℃／min升温至200℃,保持1min;N,N-二甲基甲酰胺的测定采用直接进样法,柱温100℃保持5min,以20℃／min升温至200℃．结果表明各残留溶剂均能得到有效分离,在所考察的浓度范围内呈良好的线性关系（r=0．9989～0．9999）,平均加样回收率在92．4％～104．8％（RSD=1．41％-5．6％）之间,定量限为0．15—10．19μg／mL,3批样品中7种残留溶剂的量均符合我国药典要求．该方法可用于替加环素原料药中残留溶剂的检测和质量控制．     

毛细管电泳法测定广枣三味胶囊中氧化苦参碱含量

用毛细管电泳法测定了广枣三味胶囊中氧化苦参碱的含量．氧化苦参碱的线性范围为：15．3～102．0μg／ml；相关系数为0．9998；回归方程为Y=0．7635X-3．586；RSD（n=5）分别为0．42％；平均回收率100．45％．该方法简便、快速、结果准确、重现性好．     

反相高效液相色谱法测定金樱子中的芦丁和槲皮素

建立了用反相高效液相色谱法测定金樱子中芦丁和槲皮素的方法．色谱条件：色谱柱Shim-pack VP-ODS 200mm×4．6mm,流动相为甲醇：水（含0．2％磷酸）为60：40的溶液,流速为0．8mL／min,检测波长260nm．结果表明芦丁和槲皮素达到基线分离,分别在0．03-15μg／mL（r=0．9990）和0．04-20μg／mL（r=0．9994）的浓度范围内与峰面积呈良好线性关系,检测限分别为12．6和15．2ng／mL,方法可用于金樱子中芦丁和槲皮素的测定．     

气相色谱法分析蔬菜中残留农药

本文讨论了应用气相色谱（GC）测定蔬菜中10种农药残留量的方法。本方法的检测线性范围为0．1～1．5μg/mL，最小检测限为0．010-0．040mg/kg，回收率在90．1％～108．6％，相对标准偏差（RSD）小于6．0％（n=7）。结果表明，该方法快速、灵敏、分离度高，对于科学研究和指导安全农业生产具有重要意义。     

对羟基苯甲醛的GC分析方法研究

应用GC分析建立了对甲酚催化氧化法合成对羟基苯甲醛的主要产物及其副产物和反应液的分析方法，在色谱柱5％ SE-30，检测器为FID，柱温120～220℃，升温速率为8℃／min的条件下，由内标法定量，所得各组分的线性回归方程分别为：对羟基苯甲醛为y=0.0579x 0．4036，对羟基苯甲醚为y=0．0502x 0．4165，对甲酚为y=0．073x 0．3387;相关系数R^2分别为：0．9984，0.9885，0．9932；方法的最低检测限分别为：3．47μg／mL、1．68μg/mL、1．62μg／mL；CV％分别为0．13，0．16和0．08。探索一种针对此类反应进行的中控鉴测和产品的定量分析，以求建立决速、准确的分析方法。     

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.     

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.     

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.