海泡石的化学成分研究

本文通过两种不同成因海泡石化学成分特征的研究发现，热液型海泡石和沉积型海泡石的化学组成有较大差异，热液型纤维状海泡石ＭｇＯ、ＳｉＯ２含量高，Ａｌ２Ｏ３含量低，为富镁海泡石；沉积型粘土状海泡石ＭｇＯ、ＳｉＯ２含量低，Ａｌ２Ｏ３含量高，为富铝海泡石。而且，两种不同成因的海泡石结晶形态的差异与其化学组成密切相关；热液型海泡石Ｍｇ２＋、Ｓｉ４＋高，Ａｌ３＋低，接近理想值，易结晶形成长纤维状；而沉型积海泡石Ｍｇ２＋、Ｓｉ４＋较低，Ａｌ３＋高，结晶颗粒细小，为粘土状，但在电镜下观察仍呈纤维状。     

海泡石晶体结构的超细效应研究

本文在对海泡石进行超细加工和粒度分析的基础上，利用Ｘ射线分析、红外光谱分析研究了高速气流对撞冲击式超细加工对海泡石的晶体结构所产生的影响。研究发现：高速气流对撞冲击式超细粉碎在完成海泡石纤维束分离的同时，也将对海泡石的晶体结构产生一定的破坏作用，导致海泡石的晶胞参数ａ、ｂ的减小，基本结构单元间以连接点为支点发生一定程度的旋转，从而产生结构孔道畸变。     

海泡石对有机染料吸附作用的研究

本文研究了海泡石在水相中对有机染料的吸附作用，考察了海泡石粒度，溶液的ＰＨ、温度及吸附时间对海泡石吸附有机染料的吸附率的影响，测定了５种有机染料水溶液的吸附等温线，获得了一些有用的数据，为海泡石应用于处理印染废水提供了依据。     

改性海泡石填充不饱和聚酯复合材料的热性能研究

采用表面活性剂对海泡石进行改性，用DTA分析研究了改性剂种类及海泡石用量对不饱和聚酯复合材料热性能的影响．试验结果表明，海泡石的加入可显著改善不饱和聚酯复合材料的热性能，且阳离子表面活性剂改性海泡石填充效果较好．海泡石的最佳用量在8％-11％左右．     

高温氧气流改性海泡石处理印染废水性能及再生研究

本文采用高温氧气流改性和再生天然海泡石，研究了改性海泡石(H/海泡石)吸附去除模拟印染废水中碱性嫩黄O染料及其再生的性能，以及H/海泡石静态吸附碱性嫩黄O的特点，采用相关模型拟合，考察了高径比(填料高度与吸附柱内径的比值)、染料溶液流速和浓度对H/海泡石动态吸附的影响。结果表明，改性温度和时间分别为550℃和1 h,氧气流速为6 L/min得到的改性海泡石的单位吸附量超过200 mg/g; Langmuir等温吸附方程、准一级动力学方程分别符合H/海泡石的吸附行为、吸附动力学；高径比为2.5,染料流速为每小时6倍床体积，染料初始浓度为200 mg/L时，H/海泡石分别能处理的废水量约为55、42和45倍床体积；采用高温氧气流对吸附饱和的H/海泡石进行再生，再生温度和时间分别为550℃和20 min,再生氧气流速为6 L/min时，再生率接近100%。     

低温等离子体协同CuO/海泡石催化脱除NO

采用硝酸浸泡和硝酸铜改性海泡石并经高温煅烧,制得改性海泡石催化剂协同介质阻挡放电反应器产生的低温等离子体脱除NO。通过XRD分析发现海泡石原矿经硝酸洗涤可有效去除其中Mg以及其他以不同化合物形态出现的杂质,海泡石原矿经酸洗提纯、浸渍硝酸铜溶液、干燥、煅烧等工艺过程处理可在载体表面形成稳定的CuO物相,并且海泡石基本结构没有发生明显变化,证明海泡石结构稳定,是良好的催化剂载体。通过SEM测定表明酸洗可有效增加海泡石孔道截面和孔道数,增大其比表面积;并且活性组分均匀分布在催化剂表面及孔道中,在负载量适中时未发现较大聚集颗粒。证明改性海泡石催化剂协同低温等离子体对NO具有良好的脱除效果。     

几种阳离子交换剂对纤状海泡石溶血能力的影响

本文对源于湖北广济的纤状海泡石矿通过用几种阳离子交换剂处理后，测定处理前后的纤状海泡石的溶血率，ＭＤＡ的变化以及对人体红细胞毒性的影响，发现ＮＨ＋４ ，Ｎａ＋ ，Ｋ＋ ，Ｃａ２＋ 处理纤状海泡石对人体红细胞毒性明显下降。因此认为纤状海泡石的红细胞毒性可能与脂质过氧化有关     

海泡石表面改性及其对橡胶性能补强的研究

通过对海泡石进行表面处理，探讨海泡石表面改性的最佳条件，研究了表面处理剂的种类，用量及表面处理时间及干燥温度等因素对性能的影响，结果表明，海泡石在填充橡胶综合性能指标上明显优于陶土和碳酸钙填充的橡胶，可替代作为一种新型橡胶无机填料，用于橡胶的补强，同时可简化生产工艺，降低生产成本。     

新康海泡石富镁特征的研究

新康海泡石中MgO含量高达26％左右,明显高于广济、全椒、浏阳及国外海泡石中MgO的含量。Ms~(2+)占据全部八面体位置后,仍有0.133-0.318的镁离子剩余。新康海泡石是富镁海泡石变种?还是混有少量蛇纹石或是有其它富镁杂质?我们通过人工配比混合样及不同产地海泡石的X射线衍射分析,配合热处理样品X射线分析,以及物理性能测试研究,证实新康海泡石是富镁海泡石变种,结晶度差,但热稳定性高,比表面和阳离子交换容量均较大。海泡石中MgO的含量与其成矿地质条件有关,新康富镁海泡石是产于超镁铁质岩型蛇纹岩体风化带裂隙中的次生矿物,成矿母岩的富镁低钙特征是生成富镁海泡石的基本条件。     

CuO-海泡石/PMMA-PEG复合凝胶聚合物电解质的制备与性能

通过沉淀法合成了CuO-海泡石,再经溶液浇注法得到不同含量CuO-海泡石掺杂的PMMA-PEG基复合凝胶电解质膜。采用扫描电镜观察、X射线衍射分析、红外光谱、热重和电化学阻抗手段对复合凝胶电解质膜的结构和电化学性能进行了测试。结果表明,复合聚合物膜表面呈多孔状,且CuO-海泡石在复合聚合物膜中实现了良好分散。随着CuO-海泡石含量增加,复合凝胶电解质膜的电导率增高,热稳定性也明显提高。     

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…     

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.     

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.