溴离子对银阳极溶出测定影响的研究

本文研究了Ｂｒ￣－离子对银阳极溶出的影响，在０．５ｍｏｌ／ＬＨＮＯ＿３底液中测定银时加入５×１０￣（－４）ｍｏｌ／ＬＢ离子，可以提高灵敏度１０倍以上。其原因是银溶出时生成的Ａｇ￣＋离子与加入的Ｂｒ￣－离子结合生成ＡｇＢｒ沉淀，随后又与过量的Ｂｒ￣－离子生成［ＡｇＢｒ＿２］￣－络合物，加快了溶出反应的进行。富集１０ｍｉｎ，可以测定２．５×１０￣（－９）ｍｏｌ／ＬＡｇ￣＋离子。     

锗（Ⅳ）－槲皮素－溴酸盐体系极谱吸附催化波的研究

在醋酸盐缓冲底液中，锗（Ⅳ）能与槲皮素形成络合物，并吸附在汞电极上，在溴酸盐存在下，形成吸附催化波。使用单扫二阶导数极谱法时，锗浓度在６．０×１０￣（－８）～２．０×１０￣（－６）ｍｏｌ／Ｌ与峰高有线性关系，检出下限为２．０×１０￣（－８）ｍｏｌ／Ｌ．电活性络合物的组成为Ｇｅ（Ⅳ）：槲皮素＝１：３。平行催化反应的速率常数ｋ＝２．８ｘ１０￣６（ｍｏｌ／Ｌ）￣（－２）·ｓ￣（－１）。     

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     

Co－5－Cl－PADAB间接法测定汞

本文研究了Ｃｏ－５－Ｃｌ－ＰＡＤＡＢ间接测汞的方法。用汞定量将Ｃｏ（ＤＤＴＣ）＿２／ＣＨＣｌ＿３溶液解析，Ｃｏ￣（２＋）进入水相与钴试剂反应生成水溶性紫红色络合物，以加入钴试剂的水样为参比，在５７ｎｍ处测定水溶液的吸光度。汞含量在０～５×１０￣（－３）ｇ／Ｌ之间遵守比尔定律，最低检出限为６．４×１０￣（－５）ｇ／Ｌ，该方法操作简单快速，选择性好。     

黄河鲤鱼血液的研究（Ⅱ）──三项血液指标的测定

本文对黄河鲤鱼ＣｙｐｒｉｎｕｓｃａｒｐｉｏｈａｅｍａｔｅｒｕｓＴ．ｅｌｓ．，２项血液指标的的常数值进行测定，结果是：红细胞数的全距为１．４０００×１０￣（１２）～３．３６５０×１０￣（１２）个／Ｌ，平均值为（２．３５５４±０．５４１９）×１０￣（１２）个／Ｌ；白细胞数的全距为０．４８７５×１０￣（１０）～２．４５００×１０￣（１０）个／Ｌ，平均值为（１．８１００±０．６１５０）×１０￣（１０）个／Ｌ；血红蛋白含量全距为７４～１０５ｇ／Ｌ，平均值为８６．６±８．９ｇ／Ｌ。比较雌鱼和雄鱼三项血液值发现，雄鱼的红细胞平均数、白细胞平均数、血红蛋白平均含量均高于雌鱼，对这种雌雄差异进行显著性分析，差异不显著。     

Ag（I）－QARH络合物在胶束溶液中的光度性质

在ｐＨ５．０的ＨＯＡｃ－ＮａＯＡｃ缓冲溶液中，当有０．１０％ＳＬＳ存在时，Ａｇ（Ｉ）与ＱＡＲＨ形成１：１络合物，λ＿（ｍａｘ）为５３５ｎｍ，ε为１．０５×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），Ａｇ（Ｉ）含量在０．００５～１．００μｇ／ｍＬ范围内服从Ｂｅｅｒ定律，稳定常数为１．７８×１０￣（１５）．所提出的方法用于精铜矿中微量银的测定，结果满意     

羟基铬交联蒙脱土的制备及物化性能的研究

本文以钠型蒙脱土（Ｎａ－Ｍｔ）为原料，以羟基铬聚合阳离子为交联剂制备出羟基铬交联蒙脱土（Ｃｒ－Ｍｔ）并对其物化性能进行研究。结果表明Ｃｒ－Ｍｔ的物化性能优于Ｎａ－Ｍｔ，ｄ＿（００１）值１．６～１．９ｎｍ，比表面积８０～１９０ｍ￣２·ｇ￣（－１），１．８～５．０ｎｍ的孔约占半数以上，表面总酸量为６．１×１０￣（－４）～６．５×１０￣（－４）ｍｏｌ·ｇ￣（－１）、阳离子交换量在９．０×１０￣（－３）～４２×１０￣（－３）ｍｏｌ／１００ｇ样，但其热稳定性有待进一步提问。     

核反应堆循环冷却水中￣（14）C含量的测定

本文探索了“Ｃａ￣（１４）ＣＯ＿３法”和“有机碱法”两种测定水中痕量￣（１４）Ｃ的方法，并进行了核反应堆循环冷却水的实际测量。“Ｃａ￣（１４）ＣＯ＿３法”是先把水样（约３００ｍＬ）用５ｍｏｏｌ／ＬＨ＿２ＳＯ＿４酸化并加热蒸馏出￣（１４）ＣＯ＿２气体，再用ＮａＯＨ和ＣａＣｌ＿２浓集吸收￣（１４）ＣＯ＿２并生成Ｃａ￣（１４）ＣＯ＿３沉淀；最后把此沉淀悬浮于胶状闪烁液（Ｔｏｌｕｅｎｅ：Ｔｒｉｔｏｎ×１００：Ｗａｔｅｒ＝２：１：１．５）中，在ｎ－３５３液体闪烁计数仪上检测￣（１４）Ｃ的量，此法的￣（１４）Ｃ检测限为３．３×１０￣（１１）ｇ／Ｌ。“有机碱法”是用含有乙醇胺的闪烁液浓集吸收蒸馏产生的痕量￣（１４）ＣＯ＿２气体，该吸收液可直接用于ＦＪ－３５３液体闪烁计数仪测量￣（１４）Ｃ。此方法不仅有较高的￣（１４）ＣＯ＿２气体吸收效率（＞９０％），而且有较低的￣（１４）Ｃ检测限（３．３×１０￣－１１）ｇ／Ｌ）。用“有机碱法”对两种核反应堆的循环冷却水进行￣（１４）Ｃ测量，其中测量一个样品的￣（１４）Ｃ含量是５．０×１０￣（－１１）ｇ／Ｌ，并用γ能谱测出另外６种痕量放射性核素（￣（４６）Ｓｃ，￣（５１）Ｃｒ，￣（５４）Ｍ     

铅（II）－1－［（5－溴－2－吡啶）偶氮］－2，7－萘二酚－吐温－80体系光度法测定铅的研究

研究了在吐温－８０存在下，铅（ＩＩ）与合成的１－［（５－溴－２－吡啶）偶氮］－２，７－萘二酚（简称５－Ｂｒ－ＰＡＤＮ）的显色条件和光度特性。非离子表面活性剂吐温－８０主要起增溶作用。显色反应在５０℃时１０ｍｉｎ内即可完成，配合物在ｐＨ３．０～６．０之间的吸光度大而稳定，最大吸收波长λｍａｘ＝５９０ｎｍ，摩尔吸光系数ε＿（５９０）＝８．３１×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）．Ｐｂ￣（２＋）含量在０～２０μｇ·（２５×１０￣（－３）Ｌ）￣（－１）范围内遵守比尔定律。拟定方法的选择性较好，已用于树叶表面上和人发中铅的测定，获满意结果。     

磷酸盐及其结构类似物对文昌鱼酸性磷酸酶的影响

研究了磷酸盐（ＨＰＯ￣（２－）＿４）及其结构类似物钼酸盐（ＭｏＯ￣（２－）＿４），钒酸盐（ＨｖＯ￣（２－）＿４），钨酸盐（ＷＯ￣（２－）＿４）对文昌鱼酸性磷酸酶活力的影响及其抑制机理。实验结果表明：磷酸盐对文昌鱼酸性磷酸酶的抑制作用表现为竞争性抑制类型，而其结构类似物则是通过非竞争性抑制的方式抑制酶活力．抑制常数Ｋｉ分别为：磷酸盐：３．０×１０￣（－４）ｍｏｌ／Ｌ，钼酸盐：５．５×１０￣（－７）ｍｏｌ／Ｌ，钒酸盐：７．０×１０￣（－７）ｍｏｌ／Ｌ，钨酸盐：３．８×１０￣（－８）ｍｏｌ／Ｌ，用酸盐对酶活力呈时间抑制过程，表明该类似物可能通过氧化—还原这种新的抑制机理来抑制酶的活力。     

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.