胶态分散凝胶在多孔介质中的流动阻力

胶态分散凝胶（ＣＤＧ）是由低浓度的部分水解聚丙烯酰胺（ＨＰＡＭ）和柠檬酸铝（交联剂）形成的,聚丙烯酰胺和交联剂中铝的配比为２０∶１．分别研究了ＣＤＧ体系和不加交联剂的ＨＰＡＭ溶液在填充砂中的流动阻力以及ＨＰＡＭ的相对分子质量、填充砂的粒度对ＣＤＧ体系在填充砂中流动性的影响。研究结果表明,不加交联剂的ＨＰＡＭ溶液在填充砂管中的流动阻力略有增加,而加交联剂的ＣＤＧ体系在填充砂管中的流动阻力大幅度增加。ＣＤＧ体系在粗砂中流动时,需流过６５Ｖｐ（孔隙体积）的溶液,才能使填充砂管的阻力系数大大增加;而要增加同样的阻力系数,细砂管只需流过２１Ｖｐ的溶液。ＨＰＡＭ的相对分子质量大时,所形成的ＣＤＧ体系在填充砂管中的流动阻力比相对分子质量小的ＨＰＡＭ增加更快     

幽门螺杆菌与胃粘膜相关淋巴瘤

目的：回顾性研究了２７例胃粘膜相关淋巴组织（ＭＡＬＴ）淋巴瘤中幽门螺杆菌（Ｈｐ）、淋巴滤泡分布以及胃ＭＡＬＴ淋巴的发生机理。方法：采用光镜、免疫组化及电镜检查分析。结果：胃ＭＡＬＴ淋巴瘤表面有ＨＰ２５例（９２．６％），肿瘤旁粘膜有ＨＰ２４例（８８．９％），明显高于对照组。胃ＭＡＬＴ淋巴瘤ＨＰ阳性定量多为２－３级６肝ＭＡＬＴ淋巴均有淋巴滤泡，其中１４例见于胃窦部，例见于胃体部，有淋巴滤泡ＨＰ     

腐蚀产物对碱/聚合物驱溶液的粘度损害

研究了Ｎａ２ＣＯ３／ＨＰＡＭ复合驱介质中溶解氧，以及由碳钢腐蚀产生的Ｆｅ２＋和Ｆｅ３＋等对部分水解聚丙烯酰胺（ＨＰＡＭ）降解及粘度变化的影响，并讨论了其作用机制，发现在无氧气氛下腐蚀所产生的Ｆｅ２＋对ＨＰＡＭ的粘度变化影响不大，而在曝氧环境中，由于Ｆｅ２＋自动氧化成Ｆｅ３＋产生了·ＯＨ自由基，使ＨＰＡＭ主链断裂而降解，粘度下降很大，降解后的ＨＰＡＭ分子链由于Ｆｅ３＋的交联作用而沉降．     

胶态分散凝胶在多孔介质中的流动阻力

胶态分散凝胶（ＣＤＧ）是由低浓度的部分水解聚丙烯酰胺（ＨＰＡＭ）和柠檬酸铝（交联剂）形成的,聚丙烯酰胺和交联剂中铝的配比为２０：１。分别研究了ＣＤＧ体系和不加交联剂的ＨＰＡＭ溶液在填充砂中的流动阻力以及ＨＰＡＭ的相对分子质量,填充砂的粒度对ＣＤＧ体系在填充砂中流动性的影响,研究结果表明,不加交联剂的ＨＰＡＭ溶液在填充砂管中的流动阻力略有增加,而加交联剂的ＣＤＧ体系在填充砂管中的流动阻力大幅度增加,     

聚合物驱不可入孔隙体积效应的室内研究及应用评价

基于聚合物互溶驱替和弥散渗流原理,利用双段塞浓度剖面法测定了聚合物溶液在长庆油田侏罗系延10储层6块岩心上的不可入孔隙体积(IPV),考察其对聚驱效果的影响。结果表明,聚合物溶液在6块岩心上的IPV值为20.6%~27.9%,平均为24.8%。岩心渗透率越高,IPV值越小,二者呈明显的线性负相关关系。IPV值与孔隙度无明显对应关系。不可入孔隙体积的大小反映聚合物分子线团与储层孔喉大小的匹配程度。M区块延10油藏聚合物驱试验结果表明,考虑聚合物驱过程中不可入孔隙体积效应的存在,在矿场注入工艺设计时适当提高注入量和增加前置保护段塞,有利于提升驱油效果。聚合物驱方案设计时考虑不可入孔隙体积效应是必要的。     

腐蚀产物对碱／聚合物驱溶液的粘度损害

研究了Ｎａ２ＣＯ３／ＨＰＡＭ复合驱介质中溶解氧,以及由碳钢腐蚀产生的Ｆｅ＾２＋和Ｆｅ＾３＋等对部分水解聚丙烯酰胺（ＨＰＡＭ）降解及粘度变化的影响,并讨论了其作用机制,发现在无氧气氛下腐蚀所产生的Ｆｅ＾２＋对ＨＰＡＭ的粘度变化影响不大,而在曝氧环境中,由于Ｆｅ＾２＋自动氧化成Ｆｅ＾３＋产生了,ＯＨ自由基,使ＨＰＡＭ主链断裂而降解,粘度下降很大,降解后的ＨＰＡＭ分子链由于Ｆｅ＾３＋的交联作用而沉降。     

石油磺酸盐与聚丙烯酰胺的配伍性研究

用相态实验方法研究了助剂ＮＰＣ－７、环烷基油和石蜡基油等对石油磺酸盐ＫＰＳ－ＯＪ２Ｗ与部分水解聚丙烯酰胺（ＨＰＡＭ）配伍性的影响,并初步考察了体系与原油间界面张力的变化情况。实验结果表明,助剂ＮＰＣ－７和环烷基油可以有效地改善石油磺酸盐ＫＰＳ－ＯＪ２Ｗ和ＨＰＡＭ的配伍性,但与环烷基油的加入量有关。环烷基油对体系与原油间界面张力的影响不大,而助剂ＮＰＣ－７使体系与原油间的界面张力提高了约一个数量级     

HPAM／PVP超分子复合物的形成

通过测定混合体系粘度、紫外、红外及ＤＳＣ谱图，研究了聚乙烯吡咯烷酮（ＰＶＰ）与水解聚丙烯酰胺（ＨＰＡＭ）之间的相互作用。结果表明，ＰＶＰ／ＨＰＡＭ混合体系的增比粘度比单一体系增比粘度的简单加和大得多，并且ＰＶＰ的加入增大了ＨＰＡＭ的抗盐笥。光谱结果显示，在溶液中二通过静电力可形成超分子复合物。     

基于连乘层次分析法的一种统计性群体决策方法

基于连乘层次分析法（ＭＡＨＰ）对统计性群体决策方法进行了研究．首先给出了有关ＭＡＨＰ的要点、统计性群体决策的模型、和有关多元统计和随机目标规划的理论；然后综合应用上述理论将统计性群体决策问题转化为一个有约束二次规划问题；最后给出一示例以说明有关理论和方法．     

基于模糊层次分析方法(F-AHP)的盟员优化选择算法

为了解决敏捷制造（ＡＭ）中组织动态联盟时的盟员选择问题,提出了一种基于模糊层次分析方法（ＦｕｚｙＡｎａｌｙｔｉｃＨｉｅｒａｒｃｈｙＰｒｏｃｅｓ,缩写为Ｆ－ＡＨＰ）的盟员选择算法．首先根据ＡＨＰ方法确定模糊评价矩阵和权重矢量,再通过模糊运算求出决策矢量,最终实现对侯选盟员的排序和盟员选择．     

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.