甜樱桃矮化砧木Gisela的离体快繁

以甜樱桃矮化砧木Gisela5和Gisela6作为试材，研究优化了其离体快繁的条件,结果表明：提高基本培养基中氮素含量可提高增殖系数，含有NH4NO33300mg／L和KNO33800mg／L的MS基本培养基中添加BA0．5mg／L和IBA0．1mg／L的培养基，为Gisela5和Gisela6的最适增殖培养基，其增殖系数可达7—8,在1／2MS IBA0．3mg／L的生根培养基上，生根率达89．3％，每个外植体可生出3—4条根,生根苗移栽容易成活。     

甜樱桃矮化砧木Gisela的离体快繁(英文)

以甜樱桃矮化砧木Gisela5和Gisela6作为试材,研究优化了其离体快繁的条件.结果表明:提高基本培养基中氮素含量可提高增殖系数,含有NH4NO33300mg/L和KNO33800mg/L的MS基本培养基中添加BA0.5mg/L和IBA0.1mg/L的培养基,为Gisela5和Gisela6的最适增殖培养基,其增殖系数可达7-8.在1/2MS+IBA0.3mg/L的生根培养基上,生根率达89.3%,每个外植体可生出3-4条根.生根苗移栽容易成活.     

金边瑞香试管芽苗诱导生根

在试管中诱导金边瑞香芽苗生根,要同时添加NAA和IBA或NAA和IAA才能形成良好的根系,添加足够的蔗糖对提高生根率,增加每株生根数和根的长度都至关重要。通过对6种生根培养基比较,确定1／2MS＋NAA0．5mg／L＋IBA0．5mg／L＋3％蔗糖为最佳的诱导生根培养基,平均生根率达84．6％。     

湿地松丛生芽的诱导及试管苗的生根研究

利用湿地松种子进行丛生芽的诱导及试管苗生根研究。结果发现：改良GD培养基适合湿地松离体胚的生长；以湿地松带子叶顶芽为外植体，在附加有3mg／L 6-BA和0．05mg／L的NAA改良GD培养基上可诱导湿地松丛生芽的形成，诱导率最高为73．3％；湿地松试管苗不定根诱导较为适宜的组合是1／2MS＋0．05mg／L NAA，诱导率可达60％，而无激素的1／2改良GD有利于根的伸长。     

欧林达夏橙组织培养研究

比较不同基本培养基、不同外植体、不同生长调节物质种类及配比对欧林达夏橙实生苗芽诱导及根分化的影响．结果表明，子叶节段诱导芽效果较佳，MS为基本培养基附加生长调节物质BA2mg／L，NAA0．2mg／L适于芽的诱导，White为基本培养基附加生长调节物质IBA2mg／L对根的诱导较佳，生根率达100％，移栽成活率达94％．     

新几内亚凤仙离体快速繁殖技术研究

取新几内亚凤仙具有顶芽或腋芽的新生茎段为外植体，诱导芽体萌发，进行繁殖培养．通过大量试验，筛选出各阶段适宜的培养基组成．萌芽诱导阶段培养在MS 6-BA2．0mg／L NAA0．2mg／L中，顶芽萌发早，生长快；在继代和增殖培养中以MS 6-BA1．5mg／L NAA0．2mg／L培养基效果最好．1／2MS NAA0．2mg／L诱导生根，生根率可达100％．根质量较好；适宜条件下炼苗移栽．试管苗成活率缺95％以上。     

彩纹海棠叶片组织培养技术研究

以叶片外植体，在附加2mg／16－BA和0．5mg／1NAA的ms培养基上诱导长芽，在1／2ms附加0．5mg／1NAA培养基上诱导出根，对提高繁殖率、试管苗移栽成活等做了系统的研究。结果表明：在芽的诱导中，6－BA和NAA的浓度配比起关键作用，在诱导生根中，附加0.5％活性碳对生根起促进作用，培养物分别转移次数对苗的增殖有明显影响，次数少，增殖率明显低，试管苗的移栽成活对批量生产有重要意义。     

紫草的组织培养及快速繁殖研究

以紫草的嫩茎为材料,进行了愈伤组织的诱导、愈伤组织的分化、不定芽的生根和生根继代、试管苗的移栽和移植的研究,建立起紫草嫩茎的无性系,达到了快速繁殖的目的．结果表明：MS＋BA0.5mg／L＋NAA1.8mg／L是诱导嫩茎形成具有分化能力愈伤组织的理想培养基;MS＋AgNO31.5mg／L＋BA0.3mg／L＋NAA0.1mg／L是愈伤组织和不定芽分化的理想培养基;1／3MS＋IAA0.4mg／L是试管苗生根培养的理想培养基;移植后试管苗保持了野生植株的各种生物性状,后期出现了生长旺盛、根系发达的特点．     

小根蒜组织培养及无性系建立的研究

以小根蒜嫩茎的鳞茎为材料,进行了愈伤组织诱导、不定芽分化、试管苗生根、试管苗移栽和移植的研究,建立了小根蒜嫩茎无性系。结果证明：MS＋6-BA0．3mg·L^-1＋2,4-D1．0mg·L^-1＋NAA0．5-1．0mg·L^-1是小根蒜愈伤组织的诱导培养和继代培养的理想培养基;Ms＋AgNO31．2mg·L^-1＋BA0．5mg·L^-1＋NAA0．1mg·L^-1是愈伤组织和不定芽分化的理想培养基;1／3MS＋NAA0．3-0．6mg·L^-1是变异小根蒜不定芽生根的理想培养基;炉灰渣是试管苗移栽的理想基质。     

细叶百日草变异植株的组织培养及无性系建立

以变异细叶百日草嫩茎为材料,进行了愈伤组织的诱导、分化、试管苗生根、移栽的研究．结果表明：MS＋BA1．0＋2,4-D1．2为嫩茎愈伤组织诱导培养和继代培养的理想培养基;MS＋Ag（NO3）2 2．0＋BA0．4是愈伤组织和不定芽分化培养的理想培养基;1／3MS＋IAA0．5是生根培养的理想培养基;以炉灰渣为基质移栽的成活率为94％,扦插的成活率为89％;定植成活的试管苗保持了后期生长很旺盛变异性状,出现了根系增加1倍左右的特点．     

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