安徽百合属细胞学研究

本文研究了安徽产百合属（ＬｉｌｉｕｍＬ．）２种和２变种的染色体数目和核型，结果如下：野百合（Ｌ．ｂｒｏｗｎｉｉＦ．Ｅ．Ｂｒｏｗｎ）观察了２个居群。歙县居群观察到两种细胞型，细胞型Ⅰ：２ｎ＝２６＝１ｍ＋２Ｓｍ＋１０Ｓｔ＋１０ｔ＋３Ｔ；细胞型Ⅱ：２ｎ＝２４＋２Ｂｓ＝２ｍ＋２Ｓｍ＋８Ｓｔ（２ｓｃ）＋１２ｔ＋２Ｂｓ；石台居群核型公式为２ｎ＝２４＋１Ｂｓ＝３ｍ＋１Ｂｍ＋６Ｓｔ＋１２ｔ＋２Ｔ＋１Ｂｓ。百合（Ｌ．ｂｒｏｗｎｉｉＦ．Ｅ．Ｂｒｏｗｎｖａｒ．ｖｉｒｉｄｕ－ｌｕｍＢａｋｅｒ）核型公式为２ｎ＝２４＋１Ｂｓ＝４ｍ（２ｓｃ）＋１４Ｓｔ（２ｓｃ）＋６ｔ＋１Ｂｓ；药百合（Ｌ．ｓｐｅｃｉｏｓｕｎＴｈｕｎｂ．ｖａｒ，ｇｌｏｒｉｏｓｏｉｄｅｓＢａｋｅｒ）核型公式为２ｎ＝２４＝４ｍ＋９Ｓｔ（２ｓｃ）＋１０ｔ＋１Ｔ；条叶百合（Ｌ．ｃａｌｌｏｓｕｍＳｉｅｂ．ｅｔＺｕｃｅ．）核型公式为２ｎ＝２４＝２ｍ＋２Ｓｍ＋４Ｓｔ（２ｓｃ）＋１６ｔ。以上的核型类别全部属于“３Ｂ”型，其中野百合２ｎ＝２６的染色体数目和核型为首次记录。     

内蒙古棘豆属Oxytropis细胞分类学研究

本文是对内蒙古１４种棘豆属植物的染色体研究，结果如下：染色体基数ｘ＝８．有二倍体和四倍体两个倍性，核型组成由中部和近中部着丝点染色体组成，最后一对（或二对）具中部随体，核型公式有３种类型：２ｎ＝２ｘ＝１６＝８ｍ（２ＳＡＴ）＋８ｓｍ，２ｎ＝２ｘ＝１６＝１０ｍ（２ＳＡＴ）＋６ｓｍ，２ｎ＝２ｘ＝１６＝１２ｍ（２ＳＡＴ）＋４ｓｍ，其中ＯｘｙｔｒｏｐｉｓａｃｉｐｈｙｌｌａＯ．ｏｃｈｒａｎｔｈａ，Ｏ．ｇｒａｃｉｌｌｉｍａ，Ｏ．ｓｑｕａｍｍｕｌｏｓａ，Ｏ．ｄｉｖｅｒｓｉｆｏｌｉａ，Ｏ．ｌａｔｉｂｒａｃｔｅａｔａ，Ｏ．ｌｅｐｔｏｐｈｙｌ－ｌａ，Ｏ．ｈｉｒｔａ属首次报道。     

黑芥（Brassica nigra）核型和Giemsa C带带型的研究

研究了黑芥的核型和染色体的Ｇｉｅｍｓａ Ｃ带带型，黑芥有８对染色体，４对是中部着丝粒染色体，其中４对是亚中部着丝粒染色体，在４对亚中部着丝粒染色体中有２对具随体，黑芥的核型公式为２ｎ＝２ｘ＝１６＝８ｍ＋４ｓｍ＋４ｓｍ（ＳＡＴ）用ＨＳＧ法得到ＧｉｅｍｓａＣ带带型，黑芥的Ｃ带带型为ＣＩＴ型，黑芥的染色体具有着丝粒带、中间带，端带和全带，黑芥的ＧｉｅｍｓａＣ带带型公式为２ｎ＝２ｘ＝１６＝ＣＩＴ型＝２Ｃ＋     

车前属两个种的核型报道

报道了车前属两种车前的核型。Ｐｌａｎｔｏｇｏ ｌｅｓｓｉｎｇｉｉ Ｆｉｓｃｈ．ｅｔ Ｍｅｙ为２ｎ＝１２，核型属于“２Ａ”，核型公式为Ｋ（２ｎ）＝１２＝１０ｍ＋２ｓｍ；Ｐ．ｍｉｎｕｔａ Ｐａｌｌ为２ｎ＝１２，核型仍属“２Ａ”型，核型公式Ｋ（２ｎ）＝１２＝８ｍ＋２ｓｍ＋２ｓｔ。染色体相对长度组成２ｎ＝２Ｌ＋４Ｍ２＋４Ｍ１＋２Ｓ１，２ｎ＝６Ｍ２＋６Ｍ１，染色体总长分别为３０．６０，２９．８０，由１２对染     

安徽黄精和琅琊黄精核型初步研究

本文对黄精属（Ｐｏｌｙｇｏｎａｔｕｍ Ｍｉｌｌ．）中安徽特有２种植物的核型进行了初步研究，并分别人近缘种的核型进行了比较。结果表明：安徽黄精（Ｐ．ａｎｈｕｉｅｎｓｅ）核型公式为２ｎ＝２４＝４ｍ＋６ｓｍ＋１２ｓｔ＝２Ｔ，属３Ｂ核型，染色体相对长度组成为２ｎ＝２４＝６Ｌ＋６Ｍ２＋６Ｍ１＋６Ｓ．琅琊黄精（Ｐ．ｌａｎｇｙａｅｎｓｅ）核型公式为２ｎ＝１８＝１０ｍ＋２ｓｍ＋６ｓｔ，属２Ｂ核型；染色体相对长度组     

扁豆的核型报道

报道了扁豆的核型，２ｎ＝１６，扁豆核型属于“２Ａ”型，Ｋ（２ｎ）＝１６＝１２ｍ＋４ｓｍ。染色体相对长度组成是：２ｎ＝２Ｌ＋２Ｍ２＋８Ｍ１＋４Ｓ１。染色体总长为１５．４２±０．４１μｍ。     

扁豆的核型报道

报道了扁豆的核型,２ｎ＝１６,扁豆核型属于“２Ａ”型,Ｋ（２ｎ）＝１６＝１２ｍ＋４ｓｍ。染色体相对长度组成是：２ｎ＝２Ｌ＋２Ｍ２＋８Ｍ１＋４Ｓ１,染色体总长为１５．４２±０．４１μｍ。     

疏毛蘑芋染色体核型研究

本文首次报道了疏毛蘑芋Ａｍｏｒｐｈｏｐｈｌｌｕｓ ｓｉｎｅｎｓｉｓ Ｂｅｌｖａｌ的细胞染色体数目和核型,并与其近缘种蘑芋Ａ．ｒｉｖｉｅｒｉ Ｄｕｒｉｅｕ和白蘑芋Ａ．ａｌｂｕｓ Ｐ．Ｙ．Ｌｉｕ ｅｔ Ｊ．Ｆ． Ｃｈｅｎ的核型进行了比较。结果表明,该种的体细胞染色体数为２６,核型公式为２ｎ＝２６＝２２ｍ（２ＳＡＴ）＋４ｓｍ,属２Ａ型,其染色体相对长度组成为２ｎ＝２６＝１２Ｍ２＋１２Ｍ１＋２Ｓ。     

山绿豆的染色体核型分析

对山绿豆的染色体数目及核型进行了初步研究,结果２ｎ＝２２。核型分析表明,１１对染色体中,２对为正中着丝粒染色体,８对为中部着丝粒染色体,１对为近中部着丝粒染色体,其核型公式为Ｋ２ｎ＝２ｘ＝２２＝４Ｍ＋１６ｍ＋２ｓｍ,核型类型为２Ｂ型,与栽培绿豆核型Ｋ２ｎ＝２ｘ＝２２＝１８ｍ（２ＳＡＴ）＋４ｓｍ型类型（２Ｂ）相比,二者在染色体数目及核型类型上是一致的,但染色体类型及每种类型的数量是不同的。     

山绿豆(Phaseolus minimus Roxb.)的染色体核型分析

对山绿豆（ＰｈａｓｅｏｌｕｓｍｉｎｉｍｕｓＲｏｘｂ．）的染色体数目及核型进行了初步研究,结果２ｎ＝２２．核型分析表明,１１对染色体中,２对为正中着丝粒染色体,８对为中部着丝粒染色体,１对为近中部着丝粒染色体,其核型公式为Ｋ２ｎ＝２ｘ＝２２＝４Ｍ＋１６ｍ＋２ｓｍ,核型类型为２Ｂ型,与栽培绿豆（Ｐ．ａｕｒｅｕｓＲｏｘｂ．）核型Ｋ２ｎ＝２ｘ＝２２＝１８ｍ（２ＳＡＴ）＋４ｓｍ核型类型（２Ｂ）相比,二者在染色体数目及核型类型上是一致的,但染色体类型及每种类型的数量是不同的．     

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.     

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…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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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。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

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