毛细管色谱法测定头孢美唑中的有机溶剂残留量

采用毛细管气相色谱法，以叔丁基甲醚为内标，用Agilent DB-200毛细管气相色谱柱和氢焰离子化检测器．同时测定了头孢美唑中甲醇、乙醇、二氯甲烷、三乙胺、乙酸乙酯、苯甲醚等6种有机溶剂残留量．6种溶剂的线性范围分别为0～480μg／mL（r=0．9996）、0—800μg／mL（r=0．9994）、0～96μg／mL（r=0．9990）、0～800μg/mL（r=0．9993）、0～800μg／mL（r=0．9995）、0～800μg／mL（r=0．9993）；平均回收率分别为100．1％、100．5％、101．2％、100．1％、100．7％和100．4％；相对标准偏差分别为0．90％、1．30％、1．18％、1．23％、1．52％、1．41％（n=9）．     

石油降解菌的分离、表征及其降油最适状态研究

从油田污泥中分离到两株能有效降解石油烃的革兰氏染色阴性,好氧细菌。x-1菌株,呈粗杆状（1．0～1．2）×（2．2～3．7μm）,两端圆,主要成连也有成对,周生鞭毛。x-3呈短粗杆状（1．0～1．3）×（1．6～3．4μm）,两端圆,成对或成短连,也有单个。经初步鉴定均为无色杆菌属（Achromobacter sp．）。研究了影响菌株降油能力的主要影响因素,并确定两种菌株的适宜降油条件,其中x-1菌株在35℃,pH7．5和油浓度5000mg／L的条件下以及x-3菌株在25℃,pH7．5和油浓度1000mg／L的条件下具有较好的石油降解能力。     

测定工业废水中铬（Ⅵ）的新方法

基于在HAc—NaAc缓冲介质中,Cr（Ⅵ）能显著催化高碘酸钾氧化罗丹明B进行褪色,同时加入十六烷基三甲基溴化铵作为增敏剂,灵敏度大大提高,建立了测定工业废水中Cr（Ⅵ）的新方法．研究了影响催化褪色反应速度的条件,在最优化条件下,Cr（Ⅵ）浓度在0．004～0．28μg／mL范围内与吸光度呈良好的线性关系,方法的检出限为3×10^-5μg／mL,对浓度为0．012μg／mL Cr（Ⅵ）标准溶液进行11次平行测定的相对标准偏差（RSD）为0．1％．该法具有灵敏度高、选择性好等特点,已用于工业废水中Cr（Ⅵ）的测定,回收率为90％～102％,结果令人满意．     

HPLC法测定人参花中绿原酸的含量

建立以高效液相色谱法测定人参花中绿原酸含量的方法．色谱柱为ODS—C18（250mm×4．6mm,5μm）,流动相为乙腈-0．5％磷酸溶液（30：70）,流速为1．0mL／min,检测波长为326nm,柱温为25℃．绿原酸在0．4～4．0μg范围内与峰面积积分值呈良好的线性关系（R=0．9991）;平均回收率为99．28％,RSD=1．46％（n=6）．本法简便、准确、重现性好、可用于人参花茶的质量控制和评价．     

分光光度法测定蒙药黑冰片中微量钛

本实验利用分光光度法对蒙药黑冰片中钛的含量进行了测定,测得标准曲线的回归方程为：A=0．00573＋0．048C（r=0．9998）．检测限为3～15μg／mL．回收率为99％～102％,RSD为0．89％（n=5）,该方法操作简单,灵敏度高,可以推广使用．     

HPLC法测半夏露冲剂中盐酸麻黄碱和盐酸伪麻黄碱的含量

目的：建立半夏露冲剂中麻黄碱和伪麻黄碱的含量测定方法。方法：采用HPLC法,采用ZORBAX 80A C18（15cm×4．6μm,5μm）色谱拉,流动相：甲醇-0．4％磷酸溶液（8：92）流速：1mL／min检测波长208nm。外标法计算麻黄碱和伪麻黄碱的含量。结果：盐酸麻黄碱在0．014～1．4μg范围内,盐酸伪麻黄碱在0．0655～6．550μg范围内线性关系良好,平均加样回收率盐酸麻黄碱为102．69％,RSD为1.20％;盐酸伪麻黄碱为97．92％,RSD为1．41％。结论：本法简单快速,结果准确,可以有效的控制半夏露冲剂的质量。     

高效液相色谱法分析聚甘油乳酸酯的组成

建立了HPLC-ELSD法测定聚甘油乳酸酯组成的方法.采用Agilent DZORBAX NH2色谱柱（4．6 mm×250 mm）,确定了最佳色谱条件：流动相为乙腈和水（体积比为90∶10）,蒸发光散射检测器（ELSD）,流速为1．2 mL/min,柱温40℃,进样量4μL .结果表明,在0．1～0．5 mg/mL范围内线性关系良好,相关系数为0．9986,在信噪比（S/N）为3时,检出限为0．020 mg/mL .回收率为98％～102％,相对标准偏差（RSD）为1．2％～1．4％.     

微生物絮凝剂产生菌的筛选及其絮凝性能的实验研究

从活性污泥中分离筛选出3株对高岭土悬浊液具有较好絮凝作用的絮凝剂产生菌,通过对培养基初始pH和培养时间的优化及对采油废水絮凝处理效果的研究以了解其絮凝性能．结果表明：在培养基初始pH接近中性（pH6．0-7．0）,培养时间为12～24h条件下,3种菌株对高岭土悬浊液的絮凝效果最佳,最大絮凝率达91．5％;3种菌株对采油废水具有一定的处理效果,其絮凝率为30％～40％,CODcr去除率可达40％．     

混合气中CO2的膜接触器分离过程

采用中空纤维膜接触器、溶液热再生连续循环实验装置，考察了MDEA（甲基二乙醇胺）溶液及MDEA＋AMP（2-氨基-2-甲基-1-丙醇）混合溶液吸收CO2传质过程；建立膜接触器传质模型，比较预测值与实验值。结果表明：在溶液浓度2．5mol／L，气速0．5～3．0 L／min，液速15～150mL／min时，总传质系数Kov为10～32μm／s（MDEA），20～45μm／s（MDEA＋AMP）；模型预测值和实验值符合较好，对于MDEA溶液误差小于10％，混合溶液误差最大为19％。实验证明MDEA＋AMP混合溶液传质性能优于MDEA溶液。     

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．     

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.