拉伸法测金属杨氏模量实验的改进

传统的拉伸法测金属杨氏模量实验、实验过程不够科学、实验仪器不便调节等缺点，方法和过程适当地进行完善，克服了以上缺点，存在着实验条件难以保证、实验方法不够完善、该文用游标卡尺对实验装置进行改进，并对实验提高了实验精度。     

伏安法测电阻实验数据处理方法的研究

运用三种数据处理方法对伏安法测电阻实验所得实验数据进行了处理，对比其结果表明，对于同一组实验数据，不同的数据处理方法所得结果明显不同。因此，对实验数据处理方法的选择是实验中应重视的问题。实验者应根据实验目的要求，选择相应的数据处理方法。     

虚拟仪器技术在汽车测试技术实验中的应用

阐述了利用虚拟仪器编程软件Labview开展汽车测试技术课程实验的方法，分析了使用该方法进行教学实验的特点。该方法与传统实验方法相比，能够节约实验设备硬件的投入，加深学生对传感器转换原理、测试系统组成原理等知识的理解，提高学生的实验兴趣和主动性。     

乙醇酸催化法制乙醚实验改进

报道了乙醇酸催化制取乙醚的改进方法，该方法减少了实验步骤，降低了实验费用，缩短了实验时间，提高了乙醇的产率。     

环己醇制备己二酸的实验改进

本对环己醇用高锰酸钾氧化法制备己二酸的实验步骤提出了改进措施，使实验过程简化，实验时间缩短，以及实验产率提高。改进的实验方法优于献中实验方法。     

NK细胞活性检测方法改进的体会

免疫学实验是学生了解免疫学相关知识和技能最直接有效的手段，如何在有限的时间内让学生了解到更多的实验知识及掌握更多的实验技能，对实验教学方法不断改进显得非常重要。本人结合自身的实验教学经验，对MTT比色法检测NK细胞活性的实验方法进行了改进，取到了满意的实验教学效果，并从该实验方法的改进中体会到，教学要不拘泥于书本，要敢于开拓创新；做好实验前的准备是保证实验教学成功的关键；学生做好实验前的预习是实验成功的保障。     

加强学生分组实验 提高学生实验效果

本文从五个方面分析了加强学生分组实验的方法，以切实搞好学生分组实验，进一步提高实验的效果，达到实验目的。     

空气比热容比实验的原理和系统误差分析

从热力学理论入手，对空气比热容比测定实验仪器和常见的两种实验原理表述进行了分析，给出了实验过程中正确的P—V图和实验状态及其实验原理的正确理解，提出了一种客观的实验理论表述方法．通过对实验仪器的改进，取得了良好的实验结果，实验误差由原来大于7％下降到2％以内．     

两种重铬酸钾测铁实验方法的比较

通过两种重铬酸钾测铁的实验，建立了两种实验方法比较的实验，使学生学会运用数据检验的方法，拓宽分析化学实验的应用面。     

RLC串联谐振实验的直观教学法

传统的RLC串联谐振实验方法需用晶体管毫伏表大量测量数据，实验方法繁琐且没有直观性，在实验过程中不便于分析和讨论。本介绍一种新型实验方法，该方法可以克服上述不足之处，对学习掌握这部分内容起到了很好的作用。     

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.