三唑酮金属配合物的缓释作用

分剐将ZnCl2、CuCl2与三唑酮(1：2)在乙醇溶液中回流反应6h，得到相应的金属配合物，对其进行了元素分析、摩尔电导、红外光谱等表征，并测定了锌(Ⅱ)、铜(Ⅱ)配合物在静态水中的缓释行为。结果显示，在24h后，配合物(Ⅰ)、(Ⅱ)中三唑酮的释放率分别达到92．5％和83．3％。     

黄河泥沙与Pb(Ⅱ)、Cu(Ⅱ)、Cd(Ⅱ)界面相互作用的研究

研究了黄河泥沙与重金属污染物铅(Ⅱ)、铜(Ⅱ)、镉(Ⅱ)的液—固界面交换吸附作用,得到一系列E%-pH曲线,曲线均为正S型.结果表明:①重金属离子铅(Ⅱ)、铜(Ⅱ)、镉(Ⅱ)在水体中主要以 M(OH)+ 形式存在,与黄河泥沙在液—固界面发生一价阳离子交换反应; ② 3 种金属离子在天然黄河水 pH 值范围内(8.0~8.5)与黄河泥沙相互作用的离子交换率均达到75%以上,绝大部分离子被黄河泥沙交换吸附; ③在体系中加入0.2 mg·L-1的组氨酸,3种金属离子的离子交换率均有所增加,且 E%-pH曲线均发生不同程度的左移,表明一定量的组氨酸对3种金属离子与黄河泥沙表面的交换吸附起促进作用; ④比较 3 种金属离子的 E%-pH曲线可知,它们与黄河泥沙交换吸附作用的大小顺序为:Cu (II) > Pb (II) > Cd (II).     

新型多孔多胺化交联壳聚糖对镉(Ⅱ)吸附性能的研究

设计和制备了一种新型多孔多胺化壳聚糖 (P-CCTS)，用FTIR和X射线衍射法表征了产物的结构，研究了P-CCTS对镉(Ⅱ)离子的吸附性能，实验结果表明P-CCTS对镉(Ⅱ)离子有很强的吸附能力，在pH为6左右P-CCTS对镉(Ⅱ)离子的吸附能力最强，溶液中适量NaCl的存在能够显著提高P-CCTS对镉(Ⅱ)离子的吸附容量。     

2-巯基吡啶与钴(Ⅱ)、锰(Ⅱ)螯合物的合成及表征

以2—巯基吡啶为配体的钴(Ⅱ)、锰(Ⅱ)二种螯合物．经EDTA络合滴定分析、热重分析、红外光谱分析，确认了螯合物的组成与结构．结果表明：配体2—巯基吡啶是以S，N两原子为配体原子，与Mn(Ⅱ)以2：1、与Co(Ⅱ)以3：1的配比形成中性螯合物。     

蒙脱土担载钴（Ⅱ）—邻菲罗啉金属配合物的制备与表征

本文首次合成了蒙脱土担载钻(Ⅱ)—邻菲罗啉金属配合物，并对其结构进行了IR、XRD、TEM及TG的表征。     

硫酸铵-硫氰酸铵-乙醇体系萃取分离钯(Ⅱ)

研究了硫酸铵存在下，硫氰酸铵—乙醇体系萃取分离钯(Ⅱ)的行为，试验表明，钯(Ⅱ)与SCN^-形成的Pd(SCN)4^2-i很容易被萃取到乙醇相中，当溶液中硫酸铵、硫氰酸铵、无水乙醇浓度分别为0．3g／mL、0.02g／mL、0.30mL／mL，pH=3．0时，能使钯(Ⅱ)的萃取率达到100％，Al(Ⅲ)、Mn(Ⅱ)、Fe(Ⅱ)、U(Ⅵ)、Ni(Ⅱ)、V(Ⅴ)基本不被萃取．实现了钯(Ⅱ)与上述离子的分离。     

4-(2-吡啶偶氮)-邻苯三酚与Zn(Ⅱ)显色反应的分光光度法

研究了新显色剂4-(2-吡啶偶氮)-邻苯三酚(PAPG)与Zn(Ⅱ)的显色反应.在pH=8.6的缓冲溶液中, 该试剂与Zn(Ⅱ)反应生成稳定的蓝色配合物,其最大吸收波长为603 nm,对比度103 nm,表观摩尔吸光系数为3.14×104 L*mol-1*cm-1.Zn(Ⅱ)质量浓度在0.002～1.04 mg/L范围内服从比耳定律.该方法应用于人发中Zn的测定,同时用原子吸收法对照,结果令人满意.     

新体系Mn(Ⅱ)-KIO_4-镁试剂Ⅱ催化动力学光度法测定痕量锰的研究

研究了在Ｎａ２ＨＰＯ４－ＮａＯＨ缓冲溶液中痕量锰催化高碘酸氧化镁试剂Ⅱ〔即４－（４－硝基苯偶氮）－１－萘酚〕使之褪色，并研究了催化动力学条件。建立了一种高灵敏、高选择性测定痕量锰的方法。其测定范围为０．０１～２．５μｇ／２５ｍＬ，检测限为２．６８×１０－１１ｇ／ｍＬ。     

Pb（Ⅱ）-双硫腙-PAR分光光度法测定样品中的铅

研究了Pb(Ⅱ)-双硫腙(H2D2)-PAR三元配合物的显色体系,该体系的最大优点是可在水相中直接用光度法测定样品中铅。Pb(Ⅱ)、双硫腙和PAR形成1:1:1橙红色配合物,最大吸收波长为530 nm,表观摩尔吸光系数ε=2.25×104L·mol-1·cm-1,Ph(Ⅱ)在0-3.0μg·ml-1范围内符合朗伯-比耳定律。以邻二氮菲、NH4SCN、酒石酸钾钠做联合掩蔽剂,可消除常见金属离子的干扰。此方法显色迅速、稳定、操作简便,避免了使用氰化钾剧毒试剂及萃取等繁琐操作。已用于测定自来水、雪水以及人发中铅的含量,结果满意。     

草酰二胺桥联的双核钴（Ⅱ）、镍（Ⅱ）和铜（Ⅱ）配合物的合成与磁性

已合成四种新的草酰二胺桥联的双核钴（Ⅱ）、镍（Ⅱ）和铜（Ⅱ）配合物：Ｃｏ＿２（ｂｐｙ）＿２（ｏｘｄ）（ＣｌＯ＿４）＿２（１），ＣＯ＿２（Ｍｅ＿２－ｂｐｙ）＿２（ｏｘｄ）（ＣｌＯ＿４）＿２·Ｈ＿２Ｏ（２），Ｎｉ＿２（ｂｐｙ）＿２（ｏｘｄ）（ＣｌＯ＿４）＿２·Ｈ＿２Ｏ（３），Ｃｕ＿２（Ｍｅ）＿２－ｂＰｙ）＿２（ｏｘｄ）（ＮＯ＿３）＿２（４），ｂＰｙ表示２，２＇－联吡啶，Ｍｅ＿２－ｂｐｙ表示４，４＇－二甲基联吡啶，ｏｘｄ表示草酰二胺阴离子。经元素分析、ＩＲ、电子光谱、ＥＳＲ、磁化率及变温磁化率的测定，对上述各配合物进行了表征。配合物（１）和（３）的变温磁化率已测定，其数值用最小二乘法和从自旋哈密顿算符导出的磁方程拟合，求得交换积分Ｊ为－１．４８ｃｍ￣（－１）和－１．８２ｃｍ￣（－１），表明配合物中钴（Ⅱ）－钴（Ⅱ）离子及镍（Ⅱ）－镍（Ⅱ）离子之间仅有极弱的反铁磁自旋交换作用。     

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).     

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.