福建省新记录植物(Ⅶ)

报道了福建维管束植物10个新记录种:昆明石杉(Huperzia kunmingensis Ching)、狭叶瓶尔小草(Ophioglossum thermale Kom.)、雨蕨(Gymnogrammitis dareiformis(Hook.) Ching ex TardieuC.Chr.)、假镰羽短肠蕨(Allantodia petrii(Tardieu) Ching)、蒙自拟水龙骨(Polypodiastrum mengtzeense(Christ) Ching)、针齿铁仔(Myrsine semiserrata Wall.)、浙江凤仙花(Impatiens chekiangensis Y.L.Chen)、近二回羽裂南丹参(Salvia subbipinnata(C.Y.Wu) B.Y.Ding et Z.H.Chen)、纤枝兔儿风(Ainsliaea gracilis Franch.)、苏里南莎草(Cyperus surinamensis Rottb.),其中苏里南莎草为新归化种.另外,确认了戟叶耳蕨(Polystichum tripteron(Kunze) C.Pres)和厚叶冷水花(Pilea sinocrassifolia C.J.Chen)在福建分布的具体地点.文中提供了相应的生境或者特写图片,引用的凭证标本均保存于福建师范大学生命科学学院植物标本馆(FNU).     

甘肃省东南部植物分布新纪录

报道了甘肃东南部植物分布新纪录4种,即五叶鸡爪茶(Rubus playfairianus Hemsl.ex Focke)、三裂飞蛾槭(Acer oblongum var.trilobum Henry)、西南假毛蕨(Pseudocyclosorus esquirolii(Christ)Ching)和华中铁角蕨(Asplenium sarelii Hook.),并对其特征进行了描述。     

河北省蕨类植物分布新记录

报道了1种、1变种蕨类植物河北分布新记录,它们是:禾杆蹄盖蕨Athyriumyokoscense(Franch.etSav.)Christ.和疏羽香鳞毛蕨Dryopterisfragrans(L.)Schottvar.remotiuscula(Kom)Kom。     

海南蕨类植物增补

本文是整理海南蕨类植物区系的部分结果。它包括1个属(假蹄盖蕨属Athyrio-psis Ching),和3个种(假蹄盖蕨Athyriopsis japonica(Thunb.)Ching、狭翅铁角蕨Asplenium Wrightii Eaton、三羽新月蕨Pronephrium triphylla(Sw.)Ching)的分布新纪录;1个新种及1个新变种。这些属种对于研究海南植物区系的起源和发展提供了新的资料。现将新种与新变种记述如下:     

裸叶粉背蕨——河南中国蕨科一新记种

报道了河南蕨类植物中国蕨科(Sinopteridaceae)植物一新记录种:裸叶粉背蕨(Aleuritopteris duclouxii(Christ)Ching).     

贵州蕨类植物新纪录

报道贵州产6种蕨类植物新纪录,分别为卷柏科的微齿卷柏Selaginella ornata、碗蕨科的乔大鳞盖蕨Microlepia todayensis、金星蕨科的耳羽钩毛蕨Cyclogramma auriculata、焕镛钩毛蕨C.chunii、黑叶金星蕨Parathelypteris nigrescens和瘤羽假毛蕨Pseudocyclosorus tuberculiferus。引证标本存放于上海辰山植物园标本馆(CSH)。     

广东7种蕨类植物新记录

对赣粤边界九连山地区的植物多样性进行调查,对采集的标本进行鉴定,发现广东蕨类植物新记录7种,即:矩圆线蕨Leptochilus henryi(Baker) X. C. Zhang、剑叶盾蕨Neolepisorus ensatus(Thunb.) Ching、管苞瓶蕨Vandenboschia kalamocarpa(Hayata) Ebihara、单边膜叶铁角蕨Hymenasplenium murakami-hatanakae Nakaike、绿叶对囊蕨Deparia viridifrons(Makino) M. Kato、钝羽对囊蕨D.conilii(Franch.Sav.) M. Kato和百山祖双盖蕨Diplazium baishanzuense(ChingP. S. Chiu) Z. R. He,并讨论了以上新记录种的地理区系。     

基生鳞毛蕨及其混淆种的分类订正研究

作者对基生鳞毛蕨Dryopteris basisora H.Christ及其混淆种类进行分类订正研究.承认基生鳞毛蕨D.basisora H.Christ、硕果鳞毛蕨D.fructuosa(H.Christ) C.Chr.和脉纹鳞毛蕨D.lachoongensis (Beddome) B.K.Nayar S.Kaur为独立的种,将D.pseudovaria (H.Christ) C.Chr.作为硕果鳞毛蕨D.fructuosa (H.Christ) C.Chr.的异名处理.文中附有这3个物种的分类检索表、分类特征照片、文献引证和地理分布等.     

江西省维管植物区系新资料

【目的】对我国亚热带东部森林生态系统保存较完整的典型地区九连山的植物多样性进行调查，补充该区域维管植物区系新资料。【方法】以南岭山地东段九连山为研究区域，通过植物摄影、标本采集、参考有关文献和资料，对该区植物区系进行分析，并讨论了它们的地理区系和濒危状况。【结果】与以往记录对照，新增10个江西省维管植物新记录种(含2个变种),即无盖耳蕨(Polystichum gymnocarpium Ching ex W. M. Chu&Z. R. He)、倒卵伏石蕨[Lemmaphyllum microphyllum var.obovatum(Harr.) C. Chr.]、广西长筒蕨[Abrodictyum obscurum var.siamense(Christ) K. Iwats.]、剑叶石斛(Dendrobium spatellaRchb.f.)、圆叶匙唇兰[Schoenorchis tixieri(Guillaumin) Seidenf.]、红秆凤尾蕨(Pteris amoena Blume)、高鳞毛蕨[Dryopteris simasakii(H. It8) Kurata]、美...     

大暗鳞鳞毛蕨与狭鳞鳞毛蕨的分类订正研究

作者对大暗鳞鳞毛蕨Dryopteris gamblei (Hope)C.Chr.和狭鳞鳞毛蕨D.stenolepis(Bak.)C.Chr.进行分类订正研究.在《A monograph of Dryopteris in the Indian subcontinent》、《中国植物志》和《云南植物志》等专著中,均未承认D.gamblei (Hope)C.Chr.为独立的物种,而是作为狭鳞鳞毛蕨D.stenolepis(Bak.)C.Chr.的异名处理.作者确认大暗鳞鳞毛蕨与狭鳞鳞毛蕨分别为2个独立的物种.文中附有这2个物种的分类检索表、分类特征照片、文献引证和地理分布等.     

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.