四川溲疏属的数量分类研究

以四川溲疏属25种(或变种)为分类运算单位,取用40项特征性状进行测量及编码,选用距离系数矩阵作运算结果,以UPGMA法聚类,并采用结合线方法确定出分类学等级划分线,从树系图可知: 1.四川产溲疏分为小花溲疏组(Sect.Merodeutzia Schn.)与溲疏组(Sect.Deutzia)。 2.溲疏组下划分成溲疏亚组(Subsect.Deutzia)伞花亚组(Subsect.Cymorae)及狭萼亚组(Subsect.Stenosepalae Schn.);长江溲疏(D.schneideriana)应改为隶属溲疏亚组。 3.伞花亚组下建立多辐系(Ser.Multiradiatae P.He)及寡辐系(Set.Pauciradiatae P.He)是适当的。 4.对繁花溲疏(D.corymbiflora)、长梗溲疏(D.vilmorinae)及西康溲疏(D.sikangensis)等疑难分类群处理基本上与形态分类相吻合。     

绣球花科中国溲疏属小花溲疏组的数量分类

测定了中国小花溲疏组（Ｓｅｃｔ．ｍｅｓｏｄｅｕｎｔｚｉａ Ｓｃｈｎｅｉｄ．）内９种及６变种的４０个形态特征并进行了数量分类分析,通过聚类分析、主成分分析和特征性状的相关分析,对该组组下等级划分、种的归属及种间亲缘关系作了全面研究,结果表明：（１）小花溲疏组可划分为３个系,即小花溲疏Ｓｅｒ．Ｐａｒｖｉｆｌｏｒａｅ Ｚａｉｋｏｎｎ．）、粉红溲疏系（Ｓｅｒ．Ｒｕｂｅｎｔｅｓ Ｚａｉｋｏｎｎ．）及伞房溲疏     

四川溲疏属的分类研究(Ⅰ)——经济价值、地理分布及种的检索

四川溲疏属植物20种,5变种及1栽培变型,其中有2新种,2新变种,2新分布种及1新等级,文中对该属的研究简史、经济价值和地理分布作了讨论,给出了属的特征及种的系统检索表;对几个疑难分类群的等级划分处理如下: 1.繁花溲疏(D.corymbiflora Lem.ex Andre)不应作川溲疏的变种,应恢复其种等级。 2.西康溲疏(D.sikangensis Fang)作长叶溲疏的异名不妥,拟为独立种等级。 检索表系统安排采用T.H.3a14ROHHHROBa(1966)的系统,但有调整与补充: a.长江溲疏(D.schneideriana Rehd.)从狭萼亚组改置于溲疏亚组。 b.伞花亚组中建立多辐系(Ser.Multiradiatae P.He)与寡辐系(Ser.Pauciradiatae P.He)这2新系。     

中国绣球花科溲疏属小花溲疏组的分类研究(Ⅰ)——研究历史、地理分布、组的特征

对绣球花科的分类地位、亲缘关系作了综述;并对溲疏属小花溲疏组的研究历史、地理分布进行了讨论,给出了组的特征及种的检索表,得出以下结论：①绣球花科（Ｈｙｄｒａｎｇｅａｃｅａｅ）与广义虎耳草科（Ｓａｘｉｆｒａｇａｃｅａｅｓｅｎｓｕｌａｔｏ）的亲缘关系较远,而与山茱萸科、刺莲花科的亲缘关系较近,因此应把绣球花科从广义虎耳草科中移出单独成立一科．②绣球花科由溲疏属（ＤｅｕｔｚｉａＴｈｕｎｂ．）、Ｆｅｎｄｌｅｒａ、绣球花属（Ｈｙｄｒａｎｇｅａ）、黄山梅属（Ｋｉｒｅｎｇｅｓｈｏｍａ）等１７个属组成．③溲疏属与黄山梅属、山梅花属（Ｐｈｉｌａｄｅｌｐｈｕｓ）的亲缘关系最近,与产于北美的Ｆｅｎｄｌｅｒａ,Ｊａｍｅｓｉａ和Ｗｈｉｐｐｌｅａ几个属的亲缘关系也较近．④小花溲疏组包括９种及８变种,从中国东北部向西南部呈连续的地带性分布,其分布中心在我国西南部．     

四川溲疏属花粉形态初步研究

在光学显微镜及扫描电镜下,对四川省溲疏属12种、3变种的花粉形态进行了初步研究,结论如下:1.溲疏属花粉属于三孔沟花粉,具网状纹饰.2.据外壁纹饰可将花粉分为3类型:①浅网状纹饰型;②深网状纹饰型及③皱脊网纹饰型.3.对一些疑难分类群,如西康溲疏(D.sikangensis Fang)的界定提供了孢粉学证据,对伞花亚组(Subsect.Cymosae Rend.)中建立的多辐系(Ser.Multiradiatae P.He)及寡辐系(Ser.Pauciradiatae P.He)亦提供了花粉方面的新资料.     

中国溲疏属叶表附属物的显微形态及其分类意义

在光镜下对国产绣球花科溲疏属（ＤｅｕｔｚｉａＴｈｕｎｂ．）３７种１５变种叶表附属物进行了观察、测量,对个别种进行了扫描电镜观察．溲疏属叶表面除个别种无毛外几乎均被星状毛（Ｓｔｅｌａｔｅｈａｉｒｓ）．根据星状毛在叶表的情况可分为３种：贴伏星状毛、具中央辐射线的星状毛及具柄的星状毛．具柄的星状毛仅在极少数种内出现．综合叶表星状毛的光镜观察结果,讨论了叶表附属物在该属中的系统演化趋势及在某些系、种间关系上的分类意义．对一些疑难分类群,如灌丛溲疏（Ｄ．ｒｅｈｄｅｒｉａｎａＳｃｈｎｅｉｄ．）的界定以及对在伞花亚组（Ｓｕｂｓｅｃｔ．ＣｙｍｏｓａｅＲｅｎｄ．）中建立多辐系（Ｓｅｒ．ＭｕｌｔｉｒａｄｉａｔａｅＰ．Ｈｅ）和寡辐系（Ｓｅｒ．ＰａｕｃｉｒａｄｉａｔａｅＰ．Ｈｅ）提供了叶表毛的形态学资料     

绣球花科西康溲疏及其近缘种变异性的数量分析

在详细鉴定了四川所有标本馆及云南部分标本馆珍藏的西康溲疏与长叶溲疏、球花溲疏这三种的标本８００余号的基础上，进行了实地采集补充，选出能代表其总体形态变异性的不同地方居群具花标本６０号作分类运算单位（ＯＴＵｓ），而２２个数量性状被测量作变量．分类运算单位间的关系通过聚类分析、主成分分析、散点图及柱状图表述．聚类分析可知，球花溲疏是一独立的种，而西康溲疏与长叶溲疏间有重叠．ＰＣＡ显示所有ＯＴＵｓ沿ＰＣⅠ大致群集成３个分类群，而ＰＣⅡ及ＰＣⅢ轴上则随机散布；前３个ＰＣ揭示了该三近缘种变异性总信息的７８．８５％．由此可知：长叶溲疏种内变异相当活跃，西康溲疏和球花溲疏可能由长叶溲疏分化而来．由于球花溲疏种下极端的同质性，它无疑是一独立种等级．ＰＣⅠ轴特征矢量绝对值大小显示出叶表毛被，萼筒上星状毛在该三种的分类中的重要性．从散点图和柱状图可知，西康溲疏在多项特征上处于球花溲疏和长叶溲疏间，它是否是后二种的杂交种呢？实地考察结合其他证据证明这是不可能的．还结合四川西部和东部冰川作用的不同而导致溲疏属在川东、川西的变异模式的差异，对西康溲疏起源于长叶溲疏的地质年代作出推论，得出了西康溲疏是长叶溲疏种下的一局限分布的、新近分     

中国绣球花科溲疏属小花溲疏组的分类研究（Ⅰ）：研究历史,地理分布, …

对绣球花科的分类地位,亲缘关系作了综述;并对溲疏属小花疏组的研究历史,地理分布进行了讨论,给出了组的特征及种的检索表,得出以下结论乡球产与广州虎耳草科的亲缘关系较远,而与山茱萸科,刺连 花科的亲缘关系较近。     

中国溲流属叶表附属物的显微形态及其分类意义

在光镜下对国产绣球花科溲疏属（ＤｅｕｔｚｉａＴｈｕｎｂ）３７种１５变种叶表附属物进行了观察,测量,对个别种进行了扫描电镜观察,溲疏属叶表面除了个别无毛我站均被星状毛（Ｓｔｅｌｌａｔｅｈａｒｉｓ）,根据星状毛在叶表的情况可分为３种,贴伏星状毛,具中央辐射线的星状毛及具柄的星状毛,具柄的星状毛仅在极少数数内出现,综合叶表状毛表的光镜观察结果,讨论了叶表附属物在该属中的系统演化趋势及某些系,种间关系上的     

大花棘豆在中国分布的研究

报道了大花棘豆在河北省的新分布,并通过对标本、资料的研究,对De Candolle所建立的大花棘豆的三个种下分类单位进行了修改.认为大花棘豆应包括二个变种分布于西伯利亚与我国河北省的原变种大花棘豆var.grandiflora和分布于内蒙古自治区及东北地区的变种狭翼大花棘豆var.leptoptera DC.     

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.