猫儿尿植物的化学成分及其药效学研究

首次从木通科猫儿尿（ＤｅｃａｉｓｕｅａｆａｒｇｅｓｉｉＦｒａｎｃｈ）中分离鉴定了１１种皂甙化合物，经光谱分析及化学方法鉴定，其中５种化合物为新化合物，分别命名为：ＤｅｃａｉｓｏｓｉｄｅＡ，Ｂ，Ｃ，Ｄ，Ｇ；另５种化合物为ＳａｐｏｎｉｎＰＧ，ＤｉｐｓａｃｏｓｉｄｅＢ，Ｋａｌｏｐａｎａｘ－ｓａｐｏｎｉｎＢ，Ｓａｐｏｎｉｎ１１，ＨｅｄｅｒａｓａｐｏｎｉｎＢ和ｓａｐｏｎｉｎＰＪ３，猫儿尿对小鼠移植性肿瘤Ｓ１     

河北苔藓植物新记录（一）

在研究河北省苔藓植物资源的过程中，首报导了河北产的１３种苔藓植物新记录：扭叶牛毛藓（Ｄｉｔｒｉｃｈｕｍｃｒｉｓｐａｔｉｓｓｉｍｕｍ），青毛藓（Ｄｉｃｒａｎｏｄｏｎｔｉｕｍｄｅｍｕｄａｔｕｍ），尖叶扭口藓（Ｂａｒｂｕｌａｃｏｎｓｔｒｉｃｔａ），黑扭口藓（Ｂａｒｂｕｌａｎｉｇｒｅｓｃｅｎｓ），链齿藓（ＤｅｓｍａｔｏｄｏｎＬａｔｉｆｏｌｉｕｓ），净口藓（Ｇｙｍｎｏｓｔｏｍｕｍｃａｌｃａｒｅｕｍ），钩喙净口藓（Ｇ．Ｃｕｒｖｉｒｏｓｔｒｅ），粗肋曲喙藓（Ｒｈａｍｐｈｉｄｉｕｍｃｒａｓｓｉｃｏｓｔａｔｕｍ），钝叶扭毛藓（Ｓｔｒｅｂｌｏｔｒｉｃｈｕｍｏｂｕｔｓｉｆｏｌｉｕｍ），紫萼藓（Ｇｒｉｍｍｉａａｆｆｉｎｉｓ），山地紫萼藓（Ｇｒｉｍｍｉａｍｏｎｔａｎａ），卵叶紫萼藓（Ｇｒｉｍｍｉａｏｖａｌｉｓ），卷叶凤尾藓（Ｆｉｓｓｉｄｅｎｓｃｒｉｓｔａｔｕｓ）。其中，牛毛藓属（Ｄｉｔｒｉｃｈｕｍ），青毛藓属（Ｄｉｃｒａｎｏｄｏｎｔｉｕｍ），净口藓属（Ｇｙｍｎｏｓｔｏｍｕｍ），曲喙藓属（Ｒｈａｍｐｈｉｄｉｕｍ），扭毛藓属（Ｓｔｒｅｂｌｏｔｒｉｃｈｕｍ）等５属为河北省新记录属。     

非晶态合金的自旋波激发与结构涨落及超精细场分布

本文研究了非晶态（ａ）－Ｆｅ－ＴＭ－Ｓｉ－Ｂ（ＴＭ＝Ｃｏ，Ｓｉ，Ｍｏ，Ｎｂ）合金从１．５Ｋ到３００Ｋ的磁化强度及室温穆斯堡尔谱，得到了成里温度Ｔｃ、饱和磁化强度σｓ（０）、自旋波颈度常数Ｄ及平均超精细场等。结果表明，（ａ）对于Ｆｅ８３Ｓｉ５Ｂ１２，当Ｎｂ，Ｍｏ与Ｓｉ，Ｃｏ取代Ｆｅ后，Ｆｅ－（Ｎｂ，Ｍｏ）－Ｓｉ－Ｂ的磁性质不同于Ｆｅ－（Ｓｉ，Ｃｏ）－Ｓｉ－Ｂ；（ｂ）ａ－Ｆｅ－（Ｍｏ，Ｎｂ，Ｃｒ，Ｗ，     

河田鸡线粒体DNA物理图谱

运用差速离心法、蛋白酶Ｋ及ＲＮａｓｅ消化法制备并纯化河田鸡（ＧａｌｕｓｇａｌｕｓｄｏｍｅｓｔｉｃｕｓＨｅｔｉａｎｂｒｅｅｄ）的线粒体ＤＮＡ（ｍｔＤＮＡ）．用１１种限制酶对其进行单酶切分析,结果表明,ＡｖａＩ、ＢａｍＨＩ、ＢｇｌＩ、ＤｒａＩ、ＥｃｏＲＩ、ＨｐａＩ、ＰｖｕⅡ、ＳａｃＩ、ＳａｌＩ和ＳｔｕＩ在河田鸡ｍｔＤＮＡ上分别有５、２、４、５、１、３、４、３、３和＞９个酶切位点,Ｓｃａｌ在不同个体河田鸡ｍｔＤＮＡ上检测出两种限制性格局,分别有２和３个酶切位点．此外,还用ＢａｍＨＩ、ＢｇｌＩ、ＤｒａＩ、ＥｃｏＲＩ、ＨｐａＩ、ＰｖｕⅡ、ＳａｃＩ、ＳａｌＩ和ＳｃａＩ进行双酶切,构建了ｍｔＤＮＡ的物理图谱     

New Process of Fine Grinding-activation of Heavy CaCO_3 and Its Application to PVC Rigid Sheet

ＮｅｗＰｒｏｃｅｓｏｆＦｉｎｅＧｒｉｎｄｉｎｇ┐ａｃｔｉｖａｔｉｏｎｏｆＨｅａｖｙＣａＣＯ３ａｎｄＩｔｓＡｐｐｌｉｃａｔｉｏｎｔｏＰＶＣＲｉｇｉｄＳｈｅｔＨｕＰｉｎｇ（胡平），ＧａｉＧｕｏｓｈｅｎｇ（盖国胜），ＪｉｎＹｏｎｇ（金涌）Ｄｅｐａｒｔｍｅｎ...     

川黄柏叶中黄酮成分的研究

利用柱层析和光谱分析方法研究川黄柏（ＰｈｅｌｌｏｄｅｎｄｒｏｎｃｈｉｎｅｎｓｅＳｃｈｎｅｉｄ）叶的黄酮类化合物,分离并鉴定了３个化合物（Ⅰ、Ⅱ、Ⅲ）．即槲皮素－３－０－β－Ｄ半乳糖甙（Ⅰ）,又名金丝桃甙（Ｈｙｐｅｒｏｓｉｄｅ）、双氢山奈酚（Ⅱ）（Ｄｉｈｙｄｒｏｋａｅｍｐｆｅｒｏｌ）和５’－异戊烯基双氢山奈酚－７－Ｏ－β－Ｄ葡萄糖（Ⅲ）,命名为黄柏新甙Ａ（ＰｈｅｌｌｏｃｈｉｎｉｎＡ）．其中Ⅲ是新化合物,Ⅱ是首次从本属植物中发现。     

Inhibition of Hepatitis C Virus Translation with Synathetic Nucleic Acids-A Molecular Approach to Antiviral Therapy

ＣａｓｅｌｍａｎｎＷ．Ｈ．（Ｄｅｐｔ．ｏｆＧｅｎｅｒａｌＩｎｔｅｒｎａｌＭｅｄｉｃｉｎｅ,ＵｎｉｖｅｒｓｉｔｙｏｆＢｏｎｎ,Ｓｉｇｍｕｎｄ－Ｆｒｅｎｕｄ－Ｓｔｒａｓｅ２５,Ｄ－５３１０５Ｂｏｎｎ,Ｇｅｒｍａｎｙ）Ｔｈｅｌａｃｋｏｆａｎｅｆｅｃｔｉｖｅ...     

江西庐山自然保护区苔藓植物的染色体研究

报道了江西庐山自然保护区７种苔藓植物的染色体数。１花叶溪苔Ｐｅｌｌｉａ ｅｄｉｖｉａｅｆｏｌｉａ（Ｄｉｃｋｓ）Ｄｕｍ．ｎ＝８＋ｍ;２．南溪苔Ｍａｘｉｎｏａ ｃｒｉｓｐａｔａ（Ｓｔｅｐｈ．）Ｍｉｙａｋｅ．ｎ＝９;。地钱Ｍａｒｃｈａｎｉｔｉａｐｏｌｙｍｏｒｐｈａ Ｌ．ｎ＝９;４．疣白发藓Ｌｅｕｃｏｂｒｙｕｍ ｓｃａｂｒｕｍ Ｌａｃ．ｎ＝１１;５．截叶真藓Ｂｒｙｕｍ ｔｒｕｎｃｏ－ｒｕｍ（Ｂｒｉｄ．）     

北京松山自然保护区苔藓植物的染色体观察

对北京松山国家级自然保护区１１种苔藓植物的染色体进行了观察和计数，结果为：（１）片叶苔属之一种（ＲｉｃｃａｒｄｉａＳＰ。）ｎ＝１０，（２）无纹紫背苔（ＰｌａｇｉｏｃｈａｓｍａｉｎｔｅｒｍｅｄｉｕｍＬｉｎｄｅｎｂ．ｅｔＧｏｔｔ．）ｎ＝７＋ｍ；（３）地钱（ＭａｒｃｈａｎｔｉａｐｏｌｙｍｏｒｐｈａＬ．）ｎ＝９，（４）蛇苔（Ｃｏｎｅｃｅｐｈａｌｕｍｃｏｎｉｃｕｍ（Ｌ．）Ｄｕｍ．）ｎ＝９，（５）韩氏真藓（Ｂｒｙｕｍｏｆ．ｈａｎｄｅｌｉｉＢｏｔｈ．）ｎ＝１０；（６）Ｒｒｙｕｍｏｆ．ｃｅｒｎｕｍ（Ｈｅｄｗ，）Ｌｉｎｄｅｎｂ．）ｎ＝１０；（７）多褶青藓（Ｂｒａｃｈｙｔｈｅｃｉｕｍｂｕｃｈａｎａｎｉｉ（Ｈｏｏｋ．）Ｊａｅｇ．ｎ＝１０，（８）青藓（ＢｒａｃｈｙｔｈｅｃｉｕｍｒｉｖｕｌａｖｅＢ．Ｓ．Ｇ．）ｎ＝１０，（９）钝叶匍灯藓（Ｐｌａｇｉｏｍｎｉｕｍｒｏｓｔｒａｔｕｍ（Ｓｃｈｒａｄ．）Ｔ．Ｋｏｐ．）ｎ＝６；（１０）粗枝藓属之一种（Ｇｏｌｌａｎｉａｓｐ．）ｎ＝１０；（１１）牛角藓（Ｃｒａｔｏｎｅｕｒｏｎｆｉｌｉｃｉｎｕｍ（Ｈｅｄｗ．）Ｓｐｒｕｃ．）ｎ＝９。     

Modified Form of Space-time Conservation Scheme

ＭｏｄｉｆｉｅｄＦｏｒｍｏｆＳｐａｃｅ┐ｔｉｍｅＣｏｎｓｅｒｖａｔｉｏｎＳｃｈｅｍｅ＊ＦｕＳｏｎｇ（符松），ＧｕｏＹａｎｇ（郭阳）ＤｅｐａｒｔｍｅｎｔｏｆＥｎｇｉｎｅｅｒｉｎｇＭｅｃｈａｎｉｃｓ，ＴｓｉｎｇｈｕａＵｎｉｖｅｒｓｉｔｙ，Ｂｅｉｊｉｎｇ１...     

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.