Keggin结构钼硅稀土杂多蓝的合成及性质研究

合成了钼硅稀土二电子、四电子杂多蓝ＬｎＨ３〔ＳｉＭｏ１０＾ＶＩＭｏ２＾ＶＯ４０〕·１２Ｈ２Ｏ和ＬｎＨ５〔ＳｉＭｏｇ＾ＶＩＭｏ４＾ＶＯ４０〕·１３Ｈ２Ｏ,其中Ｌｎ＝Ｌａ,Ｃｅ,Ｐｒ,Ｎｄ,Ｓｍ,Ｇｄ,通过ＩＲ,ＵＶ,ＴＧ－ＤＴＡ,ＸＰＳ,ＥＳＲ磁化率等对杂多蓝进行表征。结果表明,杂多酸盐还原为杂多蓝后,结构上发生了轻微的畸变。     

杂多金属氧酸盐〔XW11Z（H2O）O39〕^n—的嵌入化学研究

采用高温（１２０℃）水热合成方法,制备了层柱双氢氧化物Ｎｉ２Ａｌ－ＣＯ３;以此为反应原料,同过渡金属单取代型杂多金属氧酸盐阴离子〔ＸＷ１１Ｚ（Ｈ２Ｏ）Ｏ３９〕＾ｎ－（略写为ＸＷ１１Ｚ）进行离子交换反应,合成了多金属氧酸盐柱撑层柱双氢氧化物Ｎｉ２ＡｌＸＷ１１Ｚ（其中,Ｘ＝Ｓｉ＾４＋,Ｇｅ＾４＋,Ｂ＾３＋;Ｚ＝Ｃｕ＾２＋,Ｃｏ＾２＋,Ｎｉ＾２＋）;通过元素组成分析、ＸＲＤ、ＦＴ／ＩＲ等手段,对合成化合     

缺位K10H5[Ln（VW10O37）2]配合物的合成和性质研究

本文首次报道了缺位Ｋ１０Ｈ５「Ｌｎ（ＶＷ１０Ｏ３７）２」ＸＨ２Ｏ（Ｌｎ＝Ｌａ＾２＋、Ｃｅ＾３＋、Ｄｒ＾３＋、Ｎｄ＾３＋、Ｓｍ＾３＋、Ｅｕ＾３＋、Ｇｄ＾３＋、Ｔｂ＾３＋、Ｄｙ＾３＋、Ｙｂ＾３＋）１０余种配合物的合成方法，元素分析与理论值相符，利用ＩＲ、ＵＶ、ＸＲＤ和ＴＧ－ＤＴＡ对配合物进行了表征，配合物的热解性质研究表明，其分解温度为４００－４５０℃，还研究了配合物在水溶液中的稳定性。     

11—系列杂多钨硅酸盐异构体的氧化还原性质研究

通过极谱和循环伏安法，结合红外光谱、紫外光谱和Ｘ射线光电子能谱，研究了通式为β２—Ｋ６—ｎＨｎ［ＳｉＷ１１Ｍ（Ｈ２Ｏ）Ｏ３９］·ｘＨ２Ｏ（Ｍ＝Ｍｎ２＋．Ｆｅ３＋，Ｃｏ２＋，Ｎｉ２＋Ｃｕ２＋Ｚｎ２＋）杂多钨硅酸盐在溶液中的氧化还原性质，杂多阴离子的极谱半波电位Ｅ１／２。顺序为Ｃｕ２＋＞Ｍｎ２＋＞Ｆｅ２＋＞Ｚｎ２＋＞Ｃｏ２＋＞Ｎｉ２＋．发现杂多阴离子的半波电位Ｅ１／２与其组分中的过渡元素的电负性Ｘ有线性关系，讨论了过渡元素对杂多阴离子氧化还原性的影响。     

杂多钨酸盐Kn[MW11O39Ni（H2O）].xH2O的氧化还原性…

通过极谱和循环伏安全，结合紫外光谱和Ｘ射线光电子能谱研究了过渡元素Ｋｎ「ＭＷ１１Ｏ３９Ｎｉ（Ｈ２Ｏ）」．ｘＨ２Ｏ（Ｍ＝Ｓｉ、Ｔｉ、Ｇａ、Ｚｒ）在溶液中的氧化还原性质，提出了它们的还原机理，杂多阴离子的极谱半波电位顺序为Ｚｒ〉Ｔｉ〉Ｇａ〉Ｓｉ，发现杂多阴离子的Ｅ１／２与Ｍ元素的电负性有线性关系。     

化学沉积Ni-Cu-P合金及晶化处理对镀层结构和硬度的影响

从弱碱性化学镀溶液中化学沉积Ｎｉ－Ｃｕ－Ｐ合金,并用差热分析（ＤＳＣ）、Ｘ－射线衍射（ＸＲＤ）和透射电镜（ＴＥＭ）研究了晶化处理对镀层结构及硬度的影响。结果表明,镀液中ＣｕＳＯ４．５Ｈ２Ｏ浓度对合金组成有显著影响。在化学沉积过程中,Ｃｕ的优先析出使镀层中Ｃｕ／Ｎｉ摩尔比远远高于镀液中Ｃｕ＾２＋／Ｎ＾２＋摩尔比。镀液中ＳｕＳＯ４．５Ｈ２Ｏ浓度低时,沉积速度随其浓度增加而增大,但ＣｕＳＯ４．５Ｈ２Ｏ浓     

Al2O3-SiO2:Ln3+发光陶瓷的合成及发光行为

采用溶胶－凝胶法合成了Ａｌ２Ｏ３－ＳｉＯ２：Ｌｎ＾３＋（Ｌｎ＝Ｅｕ,Ｔｂ）发光陶瓷粉末,利用ＸＲＤ、ＴＧ－ＤＴＡ和ＩＲ等实验技术,研究了发光陶瓷的形成过程,并对其发光行为进行了研究。     

杂多阴离子层柱双氢氧化物（LDH—HPOMs）的热性质研究

采用ＴＧ、ＤＳＣ和ＸＲＤ等手段研究了多酸层柱双氢氧化物Ｍｓ２Ａｌ－ＸＷ１１Ｚ（Ｍ＝Ｃｏ＾２＋,Ｎｉ＾２＋;Ｘ＝Ｓｉ＾４＋,Ｇｅ＾４＋,Ｂ＾３＋;Ｚ＝Ｃｕ＾２＋,Ｎｉ＾２＋,Ｃｏ＾２＋）在空气气氛中的热解过程,得到了Ｃｏ２Ａｌ－ＸＷ１１Ｚ系列化合物的三步热分解机理和热稳定性序列,而对于Ｎｉ２Ａｌ－ＸＷ１１Ｚ系列化合物,则表现出不同的热解过程。     

具有Keggin结构的过氧铌杂多钨酸盐的合成和性质研究

本文报道了四种新化合物α－Ｍ３Ｈ２［ＳｉＷ１１（ＮｂＯ２）Ｏ３９］·Ｈ２Ｏ（Ｍ＝ＴＭＡ，ＴＥＡ，ＴＢＡ．ＴＨＡ）的合成、性质和结构。几种盐的红外和紫外光谱表明阴离子具有Ｋｅｇｇｉｎ结构。１８３ＷＮＭＲ数据指出杂多阴离子中有六种环境的钨原子，证明所合成的四种杂多酸盐为单取代Ｋｅｇｇｉｎ结构的杂多酸盐。极谱数据表明：Ｏ２２－的还原波在－０．２５Ｖ左右。还通过ＴＧ、ＤＴＡ和ＤＳＣ溶解度试验和变温红外等方法研究了它们的热性质。     

钛和锆钨硅杂多酸盐异构体的合成及表征

合成了α－和β－Ｍ１０－ｎＨｎ〔ＳｉＷ９Ｔｉ３Ｏ４０〕·ｘＨ２Ｏ（Ｍ＝Ｋ＋、Ｍｅ４Ｎ＋），α－（Ｍｅ４Ｎ）４Ｈ２〔ＳｉＷ１１ＺｒＯ４０〕·１３Ｈ２Ｏ和β－（Ｂｕ４Ｎ）４Ｈ２〔ＳｉＷ１１ｚｒＯ４０〕·１４Ｈ２Ｏ等杂多酸盐异构体。并用ＩＲ，ＵＶ，ＴＧ和ＤＴＡ、极谱以及Ｘ－射线粉末衍射等手段进行了表征。     

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.     

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.     

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.