一次低温快烧外墙砖的研制

介绍利用天水本地及周边原料张川长石、透辉石、通渭土等原料研制一次快烧玻化砖的工艺过程,其产品质量达到国家标准,并投入大量生产.     

低温快烧玻化砖的研究

研究了低温快烧陶瓷玻化砖的烧结性能与化学组成、原料种类之间的关系。成功的研制了在１１３０℃×６０ｍｉｎ条件下烧成，各项性能指标均达到检测标准的玻化砖产品。     

利用高钠质瓷砂研制无釉玻化砖

以湖北省钟祥县境内开采的高钠质瓷砂为主要原料，试制出了适合低温快烧的玻化砖配方，经１ １７０ ℃的最高温度焙烧，可制得无釉玻化砖。其瓷化完全，具有良好的技术性能，质量完全符合国家标准。可作外墙或地面装饰用。     

由高岭土和碳酸钾合成钾霞石

在轻油蒸汽转化催化剂中,碱性载体(如,钾霞石K_2O·Al_2O_3·2SiO_2)对催化剂抗结炭性能具有重要意义。本文以山东高岭土矿和碳酸钾为原料探讨了钾霞石(Kaliophilite)和六方钾霞石(Kalsilite)的实验室合成条件,并对合成试样进行了x光鉴定。     

霞石的蚀变产物——1M型白云母

霞石是较易蚀变的矿物。在霞石正长岩中,霞石常蚀变为各种沸石、方钠石、钙霞石,而较深的蚀变则表现为霞石的绢云母化,甚至整个霞石均变为细鳞片状白云母集合体的假像。A—H查瓦里茨基把这种白云母的霞石假像称为白霞石(Liebenerite)。我国分布的各种含霞石碱性岩体中所产的霞石,根据文献资料,也不同程度地存在     

煤矸石制备玻化砖的实验研究

为研究峰峰煤矿矸石制备玻化砖的可行性,采用室内试验的方法,在峰峰煤矿矸石中掺加适量的伟晶花岗岩、长石、石英等岩石矿物制备瓷坯,实验研究了不同配比和烧成温度下瓷坯的膨胀性、吸水性和抗折强度。研究发现:煤矸石的最高掺量可达80%,瓷坯的收缩率、吸水率、抗折强度可分别达8.58%,0.11%,68.4MPa,均能满足制备玻化砖的要求。该研究对于煤矸石资源化利用具有指导作用。     

砂质高岭土在玻化砖中应用的研究

本文论述了砂质高岭土在玻化砖中的应用，给出了玻化砖坯体配方、生产工艺参数、晶相组成及其它性能。在现代化生产线上生产了符合国家建材行业标准的玻化砖产品。     

大尺寸墙面玻化砖空鼓原因的分析和处理

以某行政楼墙面玻化砖使用过程中产生的问题及其解决为例,分析了墙面玻化砖脱落产生的原因,介绍了经过实践检验后有效的修复方法．最后提出了大尺寸玻化砖墙面施工的一些注意事项和建议．     

伊利石粘土岩制氮钾肥工艺探讨

利用伊利石粘土岩，混入一定配比添加物焙烧后，含钾矿物伊利石和正长石转变为焙烧产生的新矿物相──钾霞石。鉴于钾霞石的结构易于在酸溶液中破坏，经酸浸、氨水中和、蒸发可制得含Ｎ１１．４６％，Ｋ２Ｏ８．７８％的氨钾肥。     

霞石的成矿及在陶瓷工业中的应用

霞石为典型的碱性矿物,主要生成于碱性岩及其伟晶岩中。具有熔剂效应强而能提高熔融效果,能扩大烧结范围,提高化学稳定性和机械强度的性能。霞石矿在玻化抛光砖的配方应用中取得成功。     

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.