β－TCP／HA双相磷灰石粉末的制备及其性质的研究

通过严格控制反应条件，以共沉淀方式合成出不含α－磷酸三钙［α－Ｃａ３（ＰＯ４）２］（α－ＴＣＰ）并组成一定的β－磷酸三钙／羟基磷灰石［β－Ｃａ３（ＰＯ４）２／Ｃａ１０（ＯＨ）２（ＰＯ４）６］（β－ＴＣＰ／ＨＡ）双相磷灰石粉末，分析了β－ＴＣＰ／ＨＡ双相磷灰石粉末的理化性质．     

β—TCP／HA双相磷灰石粉末的制备及其性质的研究

通过严格控制反应条件，以共沉淀方式合成出不含α－磷酸三钙［α－Ｃａ３（ＰＯ４）２］（α－ＴＣＰ）并组成一定的β－磷酸三钙／羟基磷灰石［β－Ｃａ３（ＰＯ４）２／Ｃａ１０（ＯＨ）２（ＰＯ４）６］（β－ＴＣＰ／ＨＡ）双相磷灰石粉末，分析了β－ＴＣＰ／ＨＡ双相磷灰石粉末的理化性质。     

水解磷酸氢钙制备羟基磷灰石粉末的研究--活性生物陶瓷研究之一

本文研究了水解磷酸氢钙（Ｂｒｕｓｈｉｔｅ, ＣａＨＰＯ４·２Ｈ２Ｏ, 简称ＤＣＰＤ） 并用ＣａＯ２·２Ｈ２Ｏ（简称ＣＣＤ） 熟化以制备化学计量的ＨＡＰ粉末的方法． 用产物的Ｃａ／Ｐ（摩尔比） 作为评价指标, 找出了最适宜的ＤＣＰＤ 水解条件： ｐＨ ７．５～８．０, 温度８０ ℃, 水解３ ｈ, 料／水比１ｖ５０, 以及熟化的最佳方案： 熟化三次 （每次１ ｈ）, ｐＨ １１, 温度４０ ℃, 每次ＣＣＤ掺量２０％ , 料／水比１ｖ２５． 合成了化学计量的ＨＡＰ粉末 （Ｃａ／Ｐ＝ １．６７）, 经ｘ 射线衍射分析鉴定确为ＨＡＰ．     

磷酸钙基生物活性陶瓷粉末的合成

磷酸钙基生物活性陶瓷粉末的合成杨晓鸿，王志宏，王齐祖（兰州大学材料科学系，兰州７３００００）磷酸钙基生物活性陶瓷主要是指Ｃａ／Ｐ＝１．６７的羟基磷灰石Ｃａ１０（ＯＨ）２（ＰＯ４）６（简写为ＨＡＰ）和Ｃａ／Ｐ＝１．５０的β－磷酸三钙β－Ｃａ３（ＰＯ４）...     

链状[Tb（CH3COO）3]n的合成与晶体结构

２－羟基吡啶、Ｎｉ（ＣＨ３ＣＯＯ）２和Ｔｂ（ＣｌＯ４）３在乙腈中反应，得到（Ｔｂ（ＣＨ３ＣＯＯ）３］ｎ，并测定了它的晶体结构．［Ｔｂ（ＣＨ３ＣＯＯ）３］ｎ的晶体为三斜晶系，Ｐ－１空间群，ａ＝７．９１３（１）Ａ，ｂ＝８３３０（１）Ａ，ｃ＝１１．５７３３（２）Ａ，ａ＝７０．２９（１）°，β＝７２．２３（１）°，ｒ＝６５．０３（１）°；［Ｔｂ（ＣＨ３ＣＯＯ）３］ｎ为六配位畸变八面体构型，整个分子是长链多聚结构．     

利用热带假丝酵母提高酶解马铃薯汁的蛋白质含量

马铃薯汁用糖化酶水解，接种热带假丝酵母，在摇床中３０℃，１２０ｒ／ｍｉｎ培养３ｄ．分别用（ＮＨ４）２ＳＯ４或柠檬酸铵为氮源，用Ｎａ２ＨＰＯ４－ＫＨ２ＰＯ４缓冲液和ＣａＣＯ３为ｐＨ值稳定物质时，测定发酵基质中蛋白质的增加量．结果表明，以（ＮＨ４）２ＳＯ４为氮源，用Ｎａ２ＨＰＯ４－ＫＨ２ＰＯ４缓冲液（０．０２ｍｏｌ／Ｌ，ｐＨ６．８）和ＣａＣＯ３（０．３％）为ｐＨ稳定物质时，发酵基质中蛋白质含量的增加值最大，以干重计，蛋白质含量从１０．４％增加到３９．６％．     

［Ag_2（α－Ph_2PPy）_2］_2（NO_3）_4的合成和晶体结构

ＡｇＮＯ＿３和ａ－ｐｈ＿２ｐｐｙ，（ａ－（Ｃ＿６Ｈ＿５）＿２Ｐ（ＮＣ＿５Ｈ＿５））在加有少量Ｈ＿２Ｏ＿２和ＮａＯＨ的Ｃ＿２Ｈ＿５ＯＨ水溶液中反应生成标题化合物的灰黑色晶体。属四方晶系，空间群Ｐ４＿１，ａ＝１．３００ｎｍ，Ｃ＝４．０７６ｎｍ，ｖ＝６．８８４ｎｍ￣３，Ｚ＝８，Ｄ＿ｃ＝１．６７ｇｃｍ￣（－３），Ｒ＝０．０５９，ｒ＿ω＝０．０７２．每一不对称单元中存在二套独立而结构基本相同的［Ａｇ＿２（ａ－ｐｈ＿２ＰＰｙ）＿２］￣２＋，它的二个Ａｇ原子和二个ａ－ｐｈ＿２ＰＰｙ中－Ｎ－Ｃ－Ｐ－桥的Ｎ，Ｐ原子联接成为一个稳定非共面八员环，而环内Ａｇ，Ａｇ间距分别是０．３１４，０．３ｌ０（ｎｍ），均未成键。不对称单元中的二个八员环通过的Ｏ原子与环上Ａｇ原子的弱成键而具有结构联系。环内还出现了罕见的三配位Ａｇ原子。     

Ca3(PO4)2和Ca5(PO4)3(OH)的表面处理及血液相容性

根据含＾３２Ｐ复合新型材料应用于内辐射治疗肿瘤的设想,以非标Ｐ模拟＾３２Ｐ,用ＩＲ、接触角测定、复钙时间测试等方法研究了Ｃａ３（ＰＯ４）２和Ｃａ５（ＰＯ４）３（ＯＨ）粉末的表面处理的效果,泄漏情况及血液相容性。结果表明：Ｃａ３（ＰＯ４）２和Ｃａ５（ＰＯ４）３（ＯＨ）粉末经硅烷偶联剂ＫＨ－５７０处理后,表面形成偶联剂膜,有效提高粉末的疏水性,并明显降低Ｐ在水中的溶出量;同时可以提高粉末的血液相容性;     

新型1,4—二氮丁二烯液晶材料的合成及晶体结构？…

报道了９个新型１,４－二氮丁二烯「Ａｒ－Ｎ＝Ｃ（Ｒ）－Ｃ（Ｒ）＝Ｎ－Ａｒ,Ｒ＝Ｈ,Ｍｅ;Ａｒ＝ＣｎＨ２ｎ＋１Ｏ－Ｃ６Ｈ４,２,４－（Ｃ４Ｈ９Ｏ）（Ｍｅ）－Ｃ６Ｈ３」化和物的合成,并通过热台偏光显微镜对其就介晶性进形了研究,化合物９（Ａｒ－Ｎ＝Ｃ（Ｒ）＝Ｎ－Ａｒ,Ｒ＝Ｈ,Ａｒ＝２,４－（Ｍｅ）（Ｃ４Ｈ９Ｏ）Ｃ６Ｈ３）的单晶结构显示,晶体成单斜晶系,Ｐ２１／Ｃ空间群。晶胞参数为ａ＝０．７０７０３（３）     

F~-离子和Ti~(4+)离子在CaO-Al_2O_3-SiO_2系玻璃晶化时的作用

在ＣａＯ－Ａｌ２Ｏ３－ＳｉＯ２（ＣＡＳ）系玻璃中单独引入Ｆ－离子或Ｔｉ４＋离子,以及同时引入Ｆ－离子和Ｔｉ４＋离子,通过ＤＴＡ（差热分析）、ＸＲＤ（Ｘ－射线衍射）、Ｒａｍａｎ、ＸＰＳ（光电子能谱）和ＳＥＭ（扫描电镜）方法进行了研究。结果表明在ＣＡＳ系玻璃中一部分Ｆ－离子取代非桥氧离子处于玻璃网络内部,另一部分Ｆ－离子处于玻璃网络间隙,Ｆ－离子能促使ＣＡＳ系玻璃分相,在稍高于Ｔｇ的某一温度热处理时,ＣａＦ２晶体首先从玻璃中析出;Ｔｉ４＋离子对玻璃晶化影响不大,在稍高于Ｔｇ的某一温度热处理时,加Ｔｉ４＋离子和不加Ｔｉ４＋离子的玻璃首先析出的晶相均是钙长石（ＣａＡｌ２Ｓｉ２Ｏ８）;在ＣＡＳ系玻璃中同时引入Ｆ－离和Ｔｉ４＋离子时,在稍高于Ｔｇ的某一温度热处理后首先析出的晶体是ＣａＦ２和钙长石（ＣａＡｌ２Ｓｉ２Ｏ８）,Ｆ－离子和Ｔｉ４＋离子混合使用能更好地促进ＣＡＳ系玻璃的晶化。     

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.