安祖花的组织培养及快速繁殖研究

以安祖花的叶、叶柄和茎段为外植体在不同培养基上进行诱导愈伤组织和不定芽的发生．筛选出了诱导愈伤组织培养基MS 6—BA1．0mg／L 2，4—D0．5mg／L，不定芽分化及增殖培养基MS 6-BA1．0mg／L IBA0.1mg／L，不断的继代培养，增殖及分化率都很高，将产生的不定芽切割下来转接到1／2MS NAA0．5mg／L的培养基中生根壮苗，生根良好的试管苗移栽后，经过精心的管理。2个月后统计结果。成活率高达96％。     

康乃馨的组织培养及快速繁殖研究

通过顶芽和侧芽培养实现了康乃馨的组织培养和快速繁殖．实验表明,以MS为基本培养基,附加BA1．0mg／L IAA0．05mg／L适于芽的诱导与增殖;附加BA0．5～2．0mg／L IAA0．2～1．0mg／L适于愈伤组织的诱导;附加MS BA1．0～2．0mg／L IAA0．05～0．1mg／L适于愈伤组织的分化．幼芽在1／2MS NAA0．075mg／L 0．1％活性炭的生根培养基中生根率达到100％．     

马铃薯组织培养技术研究

以马铃薯茎尖、茎段和芽体3种不同外植体为材料，用浓度为1．0mg／L的NAA与不同浓度的2，4-D组合诱导愈伤组织；用浓度为0．2mg／L的NAA和不同浓度的BA组合诱导不定芽。试验结果表明：NAA1．0mg／L 2，4-D1．5mg／L最适于愈伤组织的诱导，NAA0．2mg／L BA0．3ms／L最适于不定芽的诱导；NAA对马铃薯根的分化有促进作用。     

康泰凤梨的组织培养与快速繁殖研究

用康泰凤梨的侧芽作外植体进行培养，成功地建立了康泰凤梨的快速繁殖程序．康泰凤梨的侧芽基部切块接种在(1)MS BAl．5mg／L诱导培养基上，形成愈伤组织；愈伤组织在(2)MS BA1．0mg／L IBA0．5mg／L的培养基上诱导丛生芽及进行继代增殖培养，效果较好；不定芽在(3)MS IBA0．5mg／L NAA0．5mg／L的培养基上易生根。健壮的试管苗移栽2个月后，成活率达95％。     

四季秋海棠的离体培养及植株再生

以四季秋海棠的叶片为外植体，对其进行了离体快繁的研究．结果表明：附加BA 1mg／L和NAA 0．1mg／L的MS培养基可诱导叶片外植体产生大量不定芽与愈伤组织，而诱导生根的最佳培养基是1／2MS IBA0．5mg／L．试管苗经过炼苗移栽，成活率较高。     

裂叶秋海棠的离体快速繁殖

利用野生裂叶秋海棠叶片及叶柄培养，通过两种方式获得大量再生植株。(1)直接从外植体表面诱导出不定芽，最佳诱导培养基为MS 6-BA 3mg／L，不定芽在培养基MS NAA0．5mg／L 6-BA0．5mg／L增殖成丛生芽．(2)先诱导出愈伤组织，再由愈伤组织分化出大量不定芽．最佳愈伤组织诱导培养基为MS NAA0．5mg／L 2，4-D0．5mg／L 6-BA0．5mg／L,愈伤组织不定芽分化培养基为MS 6-BA 1mg／L,试管苗在含1／5MS无机盐的培养基上生根，之后移栽成活率达85％。     

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．     

穿龙薯蓣嫩茎高效无性系建立的研究

研究了穿龙薯蓣嫩茎愈伤组织的诱导和分化、不定芽的分化和生根、试管苗移栽和扦插及移植于山坡栽培所需要的条件,建立起穿龙薯蓣嫩茎的高效无性系及快速繁殖技术。结果证明：MS＋BA0．3mg／L＋1NAA1．6mg／L是诱导嫩茎形成颗粒状愈伤组织的理想培养基;MS＋AgNO32．0mg／L＋BA1．0mg／L＋NAA0．1mg／L是颗粒状愈伤组织和不定芽分化培养的理想培养基;1／2MS＋NAA0．4mg／L是试管苗生根培养和生根继代培养的理想培养基;炉灰渣是试管苗移栽和扦插的理想基质。移植的试管苗具有长势旺盛、春天发芽早、根系发达等性状特点。     

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。     

耐盐能源植物海滨锦葵(Kostelezkya virginica)再生体系的建立

对海滨锦葵组织培养再生体系进行了研究，结果表明：1．海滨锦葵茎段外植体较好的愈伤组织诱导培养基组合为MS＋KT1．5mg／L＋IAA2．0mg／L或MS＋6-BA4．0mg／L＋IBA0．2mg／L＋Inositol50mg／L．2．海滨锦葵愈伤诱导不定芽的较好培养基组合为MS＋NAA2．0mg／L＋2iP5．0mg／L和MS＋NAA0．5mg／L＋2iP5．0mg／L．3．海滨锦葵腋芽分化不定芽的较好培养基组合为改良MS（含2倍有机营养）＋KT0．4mg／L＋IAA1．0mg／L．MS基本培养基中适当提高有机营养的含量对腋芽的增殖有促进作用，实验中以有机营养的含量为基本培养基2倍时效果较好．4．不定芽在1／ZMS的培养基中附加IBA1．0mg／L牛根最好．     

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