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.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

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.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the