N，N，N’-三苄基-1，1’-联萘-2，2’-二（杂氧乙酰胺）及稀土配合物的合成、表征和荧光性质

合成了一种不对称舍联萘骨架酰胺类开链冠醚配体N,N,N’-三苄基-1,1’-联萘-2,2’-二（氧杂乙酰胺）（L）及其4种稀土配合物．通过核磁共振氢谱、元素分析、摩尔电导率、红外吸收光谱、差热-热重等分析方法,对配体及配合物组成和结构进行了表征．结果表明,4种稀土配合物组成为RE（pic）3L·2H2O[RE—La（Ⅲ）,Eu（Ⅲ）,Tb（Ⅲ）,Y（Ⅲ）]．推测了该系列配合物的结构,稀土离子配位数为10．在不同溶剂中,对Eu（III）和Tb（Ⅲ）配合物荧光性质进行了研究,发现Eu（Ⅲ）配合物的荧光强度受溶剂效应的影响,荧光强度随溶剂配位能力的增强而减弱．在相同条件下,Eu（Ⅲ）配合物的荧光强度远大于Tb（Ⅲ）配合物,说明配体L的三重态能级与Eu^3＋的激发态能级匹配较好．     

4个氮支套索冠醚的铕(Ⅲ)、铽(Ⅲ)配合物的合成及表征

以4个氮支套索冠醚为配体,分别合成了一系列Eu(Ⅲ),Tb(Ⅲ)配合物,对其进行了元素分析、红外光谱、摩尔电导及荧光性能测量,确定了配合物的组成可能结构式为Ln(NO3)2L.(NO3)·xH2O(x=1～4,Ln=Eu,Tb);推测出中心离子配位数为9,4个配体与Eu(Ⅲ),Tb(Ⅲ)形成的配合物都具有较好的荧光性能,并且Tb(Ⅲ)配合物较Eu(Ⅲ)配合物的荧光强度要大.     

卤代苯甲酸铽、铕与1,10-邻菲啰啉及掺杂配合物的荧光性质研究

分别以邻氯苯甲酸和间氟苯甲酸为第1配体,1,10-邻菲啰啉为第2配体,合成了4种Tb(Ⅲ),Eu(Ⅲ)的三元配合物和8种分别掺杂Gd(Ⅲ),Y(Ⅲ)的四元配合物.在室温下测得了各配合物的激发和荧光发射光谱,讨论了配合物中的掺杂离子对配合物发光性能的影响,结果表明Gd(Ⅲ),Y(Ⅲ)对配合物中Tb(Ⅲ),Eu(Ⅲ)的发光均有敏化作用.     

苯甲酸稀土甲基亚砜配合物的合成与光致发光

以苯甲酸为第一配体，甲基亚砜为第二配体，合成稀土苯甲酸的二元，三元配合物．室温下测定荧光，结果表明铕，铽的二元、三元固体配合物均有强荧光，铕的三元配合物的荧光可比强度是Eu2O3的120倍，铽的三元配合物的荧光可比强度是Tb4O7中Tb^3 的4422倍．     

稀土配合物RE(pic)_3L的合成、荧光性质及与ct-DNA的作用方式

合成了4种N,N-乙基,苯基-N’-苯基-1,1’-联萘-2,2’-二(氧杂乙酰胺)(L)稀土配合物.通过元素分析、红外光谱、紫外光谱、差热-热重和摩尔电导率的分析,确定配合物的组成为RE(pic)3L[RE=La(Ⅲ),Eu(Ⅲ),Tb(Ⅲ),Ce(Ⅲ)],稀土离子的配位数为10,其在CH3OH溶液中属于非电解质.该系列配合物的荧光光谱表明,Eu(Ⅲ)配合物的荧光强度远大于Tb(Ⅲ)配合物,说明配体L的三重态能级与Eu3+的激发态能级匹配较好.通过紫外光谱、荧光光谱和黏度法对配合物与ct-DNA之间的作用方式进行了初步研究,结果表明,配合物与ct-DNA之间存在着插入作用.     

N,N,N-三(2-甲基苯并咪唑)胺及其稀土配合物的合成与荧火性质研究

为了考察三脚架配体及其稀土配合物的配位形式和性质,从而为进一步研究其荧光性质、生物活性提供依据,以氨三乙酸为母体合成了N,N,N-三(2-甲基苯并咪唑)胺及其稀土配合物(La3 ,Sm3 ,Y3 ,Tb3 ,Ce3 ,Eu3-).通过红外、核磁共振、差热-热重、紫外及荧光等分析手段研究了配体及其配合物的结构关系和荧光性质.研究表明,该类配体是较好的主体分子,能够与稀土离子发生配位,形成配合物,配合物内界的NO3-以双齿形式与中心离子配位;配合物热稳定性好,具有较好的荧光性质,特别是Tb3 配合物是高效的稀土有机发光配合物,可用于荧光材料的研究.     

N，N，N’，N’-四苯基-1，1’-联条2，2’-二（氧杂乙酰胺）及稀土配合物的合成、表征和荧光性质

为了研究以1,1’-联萘为骨架的酰胺类开链冠醚配体稀土配合物的组成和荧光性质,合成了N,N,N’,N＇-四苯基-1,1’-联萘-2,2’-二（氧杂乙酰胺）（L）及其5种稀土配合物．通过元素分析、摩尔电导率、红外吸收光谱、紫外吸收光谱、差热-热重分析,对其组成进行了表征．结果表明,5种稀土配合物组成为RE（pic）3L·H2O（RE=La3-,Cd3-,Eu3＋,Tb3＋,Yb3-）．室温下,对该系列配合物的荧光光谱进行了研究,发现只有Eu（Ⅲ）配合物表现出较强的Eu3＋特征发射,说明配体L的三重态能级与Eu3＋的激发态能级匹配较好．同时,测定了Eu（Ⅲ）配合物在不同溶剂中的荧光强度,发现随溶剂配位能力的增强而减弱．     

N,N,N'''',N''''-四苯基-1,1''''-联萘-2,2''''-二(氧杂乙酰胺)及稀土配合物的合成、表征和荧光性质

为了研究以1,1'-联萘为骨架的酰胺类开链冠醚配体稀土配合物的组成和荧光性质,合成了N,N,N',N'-四苯基-1,1'-联萘-2,2'-二(氧杂乙酰胺)(L)及其5种稀土配合物.通过元素分析、摩尔电导率、红外吸收光谱、紫外吸收光谱、差热-热重分析,对其组成进行了表征.结果表明,5种稀土配合物组成为RE(pic)3L·H2O(RE=La3 ,Ce3 ,Eu3 ,Tb3 ,Yb3 ).室温下,对该系列配合物的荧光光谱进行了研究,发现只有Eu(Ⅲ)配合物表现出较强的Eu3 特征发射,说明配体L的三重态能级与Eu3 的激发态能级匹配较好.同时,测定了Eu(Ⅲ)配合物在不同溶剂中的荧光强度,发现随溶剂配位能力的增强而减弱.     

2,6-双(3,5-二甲基吡唑基)吡啶稀土配合物的合成与荧光性质

在乙醇和水溶液中分别合成了Eu3 、Tb3 与2,6-双(3,5-二甲基吡唑基)吡啶的两种配合物,并对其进行了紫外光谱、荧光光谱等测试.结果表明,生成的配合物具有较好的荧光特性,在相同溶剂条件下,Eu3 配合物的荧光性能比Tb3 配合物的强.Eu3 、Tb3 配合物在乙醇中的荧光强度都比在水中的好.     

稀土牛磺酸Schiff 碱配合物的合成和性质研究

为探索新型稀土发光配合物,在甲醇溶液中合成了2-乙酰基苯并咪唑缩牛磺酸Schiff 碱配体(KL)及10个稀土配合物(RE＝La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Y),通过化学分析、元素分析、核磁共振谱、质谱、红外光谱、激光拉曼光谱,对配体和配合物进行了分子组成确证,稀土配合物的组成为RE2L3(NO3)3(L＝C11H12N3O3S).通过三维荧光激发和发射光谱测试,该类配合物在不同激发光的激发下有不同的荧光发射;配合物主要荧光发射是稀土离子微扰的配体发光,Eu、Tb的配合物出现了Eu3＋、Tb3＋的特征谱线;该类配合物均具有上转换荧光.通过DSCⅢ微量热仪测定了9 种目标配合物在283～344 K的连续比热容,计算了配合物在298.15～344.7 K温度区间内的焓变、熵变和298.15 K的吉布斯自由能值;通过常温比热容、298.15～344.7 K的温度区间内的焓变分别对配合物的稀土原子序数作图,得到的图形相似,可推测,15种稀土元素配合物的比热容、焓变对原子序数作图的图形可能会呈现三组分现象.     

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.