葡萄糖和果糖的速差动力学光度法同时测定

利用葡萄糖和果糖与 ２,４二硝基酚在强碱性介质中反应生成红色化合物的反应速度差,建立了光度法同时测定葡萄糖和果糖的速差动力学法．当 Ｎａ Ｏ Ｈ 浓度为 １６×１０－ ３ ｍ ｏｌ／ Ｌ,２,４二硝基酚浓度为 １２×１０－ ３ ｍ ｏｌ／ Ｌ,分别在 ５０℃下反应 ８ｍ ｉｎ 和 ５５℃下反应 ６ ｍ ｉｎ 时,同时测定葡萄糖的线性范围为 ０～９６０×１０－ ３ ｍ ｏｌ／ Ｌ,果糖的线性范围为０～２００×１０－ ３ ｍ ｏｌ／ Ｌ．对葡萄糖与果糖浓度比为１５∶１～１∶１ 的混合液进行回收试验,回收率为９６３％ ～１０５３％ ．该方法已用于果葡糖浆的分析     

新型板翅式冷凝蒸发器的传热特性研究

采用１ｍ长的新型板翅式单元作为工业用冷凝蒸发器的结构单元，对此单元试样进行了冷凝与沸腾传热特性的实验研究．实验结果表明：当热流密度达到６０００Ｗ／ｍ２时，其总的传热温差仅为１．１Ｋ，比通常结构的冷凝蒸发器的传热温差减小０．３～０．８Ｋ．根据单元试样的试验结果，选用优化结构尺寸，设计制造了用于１５０ｍ３／ｈ制氧机的新型板翅式冷凝蒸发器正式产品，对其进行了工业性试验．测试结果表明：传热系数达到７５４Ｗ／（ｍ２Ｋ），与原有产品相比，其重量减轻了３６％，体积减小了４０％．     

表面活性剂对镉-5-Br-DMPAP所成络合物的增溶作用研究

研究了阳离子表面活性剂及非离子表面活性剂对镉－５－Ｂｒ－ＤＭＰＡＰ的增溶作用．结果表明,阳离子表面活性剂对该体系增溶增敏作用显著,ε可达１．２１×１０５Ｌｍｏｌ－１ｃｍ－１．同时,利用Ｓ２－对该体系的褪色作用可间接测定Ｓ２－,建立的方法用于啤酒及工业污水中水溶性Ｓ２－的测定,结果令人满意．     

镍(I)-4-(对-重氮氨基苯甲酸)偶氮苯-吐温20显色反应的研究

提出用４－（对－重氮氨基苯甲酸）偶氮苯进行镍的光度方面研究，并探讨了混合表面活性剂存在时对显色反应的增敏情况．研究结果表明：镍与显色剂可形成１∶２的络合物，在ｐＨ＝１０．７０～１１．１０范围内，其表观摩尔吸光系数为１．４５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，若采用双波长法测定摩尔吸光系数可提高至１．９６×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，在０～８μｇＮｉ２＋／２５ｍＬ内，服从比尔定律，大多数外来离子不干扰，用于环境样品和铝合金中镍的测定，回收率在９６％～１１０％之间，结果令人满意     

锇─钼酸盐──碱性染料显色反应的研究

在聚乙烯酸（ＰＶＡ）存在下，锇与铅酸铵和碱性染料（罗丹明Ｂ，了基罗丹明Ｂ，耐尔蓝）形成离子缔合物，不同碱性染料所形成的缔合物服从比耳定律的浓度范围和摩尔吸光系数分别是：０￣１．２μｇ／２５ｍｌ和ε５７０ｎｍ＝２．６２×１０６Ｌ·ｍｏｌ－１·ｃｍ－１（罗丹明Ｂ体系），０￣１．０μｇ／２５ｍｌ和ε５７０ｎｍ＝２．８６×１０６Ｌ·Ｃｍ－１（丁基罗丹明Ｂ体系）；０～１．８μｇ／２５ｍｌ和ε５８５ｎｍ＝２．８１×１０６Ｌ·ｍｏｌ－１·ｃｍ－１（耐尔蓝体系）研究了三个显色体系的光度特性和３０多种共存离子的影响，方法用于一些催化剂和冶金产品中锇的测定，结果满意．     

膀胱子宫内膜异位症

患者女,３６岁,住院号３１９４７,子宫下段剖腹产手术史８年。腰痛、尿急、尿频、尿病月经期上述症状加重伴血尿１年。于１９９５年５月１６日入院。体检;腹软、腹部未触及包块、双肾未触及、无叩击病。Ｂ超检查子宫下段前壁内膜回声显示不清、膀胱三角区见３．８２ｃｍ×３．１２ｃｍ×１．７０ｃｍ低回声团,表面不规则,周边可见动脉回流,后方与子宫颈前壁密切相贴。子宫被膜显示不清。Ｂ超诊断：膀胱子宫之间异常低回声包块。膀胱镜检见膀胱右后壁距输尿管口１．２ｃｍ可见２．０ｃｍ×２．０ｃｍ肿物,表面囊泡状,基底宽大,钳取…     

铜在8－羟基喹啉修饰铅笔芯电极上的伏安特性

本文用８－羟基喹啉修饰的铅笔芯电极研究了铜的阶梯阳极溶出伏安特性，并将此法用于人发中微量铜的测定。实验指出，在此修饰电极上，铜的阶梯溶出峰有两个，１＃峰电位在－０．０３Ｖ，２＃峰电位在０．２７Ｖ处。同样的试液和条件下，１＃峰总比２＃峰的峰电流大。实验研究了测定铜的最佳条件，并测得铜的浓度在４．０×１０－８～１．６×１０－６ｍｏｌ·Ｌ－１范围内，１＃峰的峰高与浓度呈良好的线性关系，最低检测限为２×１０－８ｍｏｌ·Ｌ－１。２＃峰高与铜的浓度在６．０×１０－８～１．６×１０－６ｍｏｌ·Ｌ－１范围内也有较好的线性关系，也可用于测定铜。本文还分析了铜在修饰电极上的反应机理     

PAN－S分光光度法测定钢样中微量锰的研究

研究了１－［（２－吡啶）］偶氮－２－萘酚－磺酸（简称ＰＡＮ－Ｓ）与锰显色反应的最佳条件。在ｐＨ９硼砂－ＨＣ１介质中，锰与ＰＡＮ－Ｓ形成１：２红色配合物，λｍａｘ＝５３５ｕｍ，ε５３５＝２．６６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．０～５０μｇＭｎ／２５ｍＬ符合比尔定律。本法可满意地用于测定碳素比色钢、低合金钢和碳素钢。     

离子敏感微电极的制作及参数测试

本文制作了Ｋ＋，Ｎａ＋液态膜离子敏感微电极（Ｋ＋，Ｎａ＋—ＩＳＭＥ），并稳定了其制作条件，经测试，Ｋ＋—ＩＳＭＥ线性范围为１—１０－４ｍｏｌ／Ｌ，检测下限为３．０×１０－６ｍｏｌ／Ｌ。对Ｎａ＋选择系数为２．６８×１０－４。电位飘移为±０．１ｍＶ／ｈ。Ｎａ＋—ＩＳＭＥ线性范围为１—２．０×１０－ｍｏｌ／Ｌ，检测下限为５．０×１．０－４ｍｏｌ／Ｌ。对Ｋ＋的选择系数为１．８５×１０－２，对Ｃａ２＋的选择系数为１．４６。上述参数均满足生理实验要求，离子敏感微电极技术可做为生理学研究的重要手段。     

香港草地和芒萁群落生物量收获的最佳样方选择

利用Ｗｉｅｇｅｒｔ的方法，结合边界效应分析，根据估算及以往热带草地的研究，讨论了香港草地和芒萁群落选择最佳的样方大小和样方数目问题．表明１．０ｍ×１．０ｍ是最佳的样方尺寸，需要大约８～１６个１．０ｍ２样方才可达到标准误差小于（或等于）生物量平均值１０％的标准．     

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.