四川马海毛的氨基酸分析

用日立835－50型氨基酸分析仪对四川马海毛的氨基酸进行了测试分析。结果表明：四川马海毛与另几种动物纤维所包含的氨基酸种类基本一致，且各氨基酸含量相近；四川马海毛的氨基酸总一为76．19％，比张忠英和薛纪莹老师报道的陕北马海毛低22．02个百分点；高含硫氨基酸总含量为16．71％，低硫的为31．12％，与陕北马洗毛纤维是同样规律；胱氨酸含量为6．32％；四川马海毛氨的含量为0．76％，低于其它几种对比纤维的氨含量。     

福建近海姥鲨肝油中角鲨烯的分离测定

采用薄层层析和气相层析法分离、检测了福建近海姥鲨（Cetorhinus maximus）幼鱼肝脏中鱼鲨烯含量，结果表明：1）采用正已烷为展开剂的薄层层析法，碳氢化合物角鲨烯的回收率可达95％；2）姥鲨肝脏中肝油和碳氢化合物含量存在明显的性别差异，但肝脏和肝油中角鲨烯含量无明显性别差异，分别为0．31％（♀）、0．32％（♂）和0．40％（♀）、0．46％（♂）；3）福建近海姥鲨肝脏中角鲨烯明显高于福建近海其它鲨鳐类。     

大豆蛋白纤维膜代尔混纺针织物力学性能分析

采用多功能织物强力机等实验仪器对5种不同混纺比例的大豆蛋白纤维／莫代尔混纺针织物的性能进行了测试分析．结果表明，随着大豆蛋白纤维含量的增加，大豆蛋白纤维混纺针织物的断裂强力有增加的趋势，断裂伸长率也随之增加；大豆蛋白纤维／莫代尔混纺针织物的项破强力随大豆蛋白纤维含量的增加而下降；大豆蛋白纤维混纺针织物的撕破强力逐渐下降，尤其是在大豆蛋白纤维质量分数为100％时，织物的撕破强力最小；大豆蛋白纤维混纺针织物的纵向、横向弯曲长度逐渐下降，而其柔软性提高；大豆蛋白纤维／莫代尔混纺针织物的起毛起球性逐渐增加，织物磨损时的质量损失率逐渐增大，说明大豆蛋白纤维混纺针织物的耐磨性逐渐下降，在大豆蛋白纤维含量为100％时，即纯大豆蛋白纤维织物的耐磨性最差．     

4个哈型胞质棉花杂种性状表现

于1992年实现棉花三系配套以后，即开始强优势组织的选配，比较和筛选工作，1999年已初步育成了几个较好的杂种材料，强优势杂种Co.7-1和Co2-1分别比对照品种新陆早7号增产47．2％和31．9％，且纤维品质优于对照；特别是Co.2-1具有更粉 纤维品质，比强度为22．0cvN.tex^-1，大大优于对照品种（19．5cN.tex^-1)，其次为Co.p-1和Co.2-1，其皮棉产量分别比对照增产23．5％和23．0％，超标差均达5％显著水平，更为可贵的是二者均具有十分优良的纤维品质，2．5％跨长分别为29．53mm和29．33mm，比强度分别达22．47cN.tex^-1和22．97cN.tex^-1,应进一步研究其优良性状的稳定性，为推广应用这些优良杂种做好准备工作。     

芨芨草纤维形态的研究

对新疆石河子盐碱荒地上栽培的芨芨草茎秆的纤维进行了详细研究，通过扫描电镜制片观察，发现芨芨草茎秆表皮下有20～30层厚壁细胞连接成的纤维组织带，我们用显微镜测量法对其纤维进行了测量，结果如下：纤维的平均长度为1．11mm，平均宽度为9．4μm，长宽比为118，细胞壁平均厚度为2．73μm，纤维平均腔径为3．87μm，壁腔比为1．42，纤维长度多集中在0．81～1．20mm范围内。可见芨芨草纤维细而长，长宽比大，壁腔比小，若能加以开发利用，是一种优质的造纸原料。     

苎麻纤维环氧化合物改性研究

研制了6种不同结构的环氧化合物交联剂。对环氧化合物与苎麻纤维交联反应工艺进行了研究。改性苎麻纤维物理性能分析结果显示，交联剂质量分数、焙烘温度和时间均对苎麻纤维的改性效果有显著影响。当交联剂在3％～5％之间，焙烘温度130～140℃左右，焙烘时间3～5min左右，苎麻纤维回潮率、拉伸断裂强度及断裂伸长率有明显提高。     

杨树无性系木材纤维长度和宽度的株内变异

对7个杨树无性系纤维形态的测定研究表明，前6、8、11年内7个无性系纤维长度在胸径处的变异不显，最大的I-69杨比最小的95杨纤维长度增加了6．6％。纤维长度和宽度在7个无性系中从髓心到树皮的径向变异均表现为显增加，但宽度增加没有长度增加显。纤维形态在株内纵向变异规律为：纤维长度在同一年轮内不同高度间的变异均是树干基部较小，随树高的增加纤维长度逐渐增加，树高增加到5．6m后纤维长度达到最大，随后波动较小，至17．6m又开始下降；纤维宽度在树干基部到3．6m的范围内较大，而超过3．6m后开始减小。回归分析表明，纤维长度与年轮及树干高度的关系可用多项式描述。树木生理年龄是影响纤维形态的一个主要因子。     

杂色鲍♀×盘鲍♂合杂交受精的细胞学研究

应用组织学方法。研究了杂色鲍♀×盘鲍♂舍种间杂交受精过程的核相变化。结果表明杂色鲍♀×盘鲍♂种间杂交受精主要表现出两性融合的特点．盘鲍精子进入杂色鲍卵子。9min后中心粒发育为星光；精子头部逐渐膨大、液化形成雄性原核，39min后与雌性原核会合，而后融合．约3．2％的受精卵中观察到1个受精卵中同时存在3个即将融合的原核，这可能是多精入卵或卵子染色体组自发加倍的结果．42min后开始第1次有丝分裂。此时在极个别发育卵中发现固缩的染色质小体、微核、或分离不同步的染色体．     

纤维水泥浆体系防窜性能研究

针对固井过程中的气窜问题，对纤维水泥浆的防窜性能进行了实验研究。结果表明，纤维水泥浆的静胶凝强度提高速率比无纤维水泥的快，而且静胶凝强度达到一定值之后其抗压强度会迅速增大，有利于固井作业完成后水泥浆的快速凝结，防止气窜的发生；纤维水泥浆与无纤维水泥浆的稠化时间相差较小，且直角化性能理想；纤维长度为350-1400μm、掺量为0．12％～0．3％的纤维水泥浆体系具有较低的水泥浆防窜性能系数，可以有效地提高水泥浆的防窜性能。     

凯氏聚缩虫(Zoothamnium kentii Grenfell,1884) 形态学及表膜下纤维系统的研究

利用活体观察和蛋白银染色技术对凯氏聚缩虫的形态学和表膜下纤维系统进行了研究．该种的主要鉴别特征为：群体呈不规则的双叉型分支；个员完全伸展时宽钟形，体长60-80μm，体宽40-50μm，口围盘宽40-50μm；伸缩泡单一，顶位；大核“C”形，横位；P2和P3终止后P1继续向胞口的深处延伸，但末端较为平直并不发生明显的弯曲，三列毛基索在终止处向外分散；口围盘纤维碟状；纵长纤维较粗，整体呈现网状．     

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.