山东大戟属花粉亚显微形态研究及其在分类上的意义

报道了山东大戟属９种植物花粉的亚显微形态特征,花粉粒的赤道面观呈近长球形,极面观呈三裂圆形;具三孔沟;表面纹饰均为网状;花粉粒极轴２７．３－５６．３μｍ,赤道轴１４．３－３６．７μｍ。研究结果表明,大戟属花粉的亚显微形态结构特征支持传统的属和种级水平的分类。     

锦鸡儿属(Caragana Farb.)花粉形态研究及其分类学意义

用光学显微镜和扫描电镜对锦鸡儿属4种植物花粉形态进行了观察．花粉粒在赤道面观呈长球形或超长球形，极面观呈三裂圆形，具三孔沟；花粉的表面纹饰为网状；花粉极轴长18．9—25．8μm，赤道轴宽11．7—14．4μm．研究结果表明，锦鸡儿属花粉形态特征支持传统分类的属及属以下各级水平的分类．     

山东胡枝子属植物花粉形态研究及其在分类上的意义

报道了山东胡枝子属（Lespedeza Michx.）7种植物花粉的亚显微形态特征,花粉粒从赤道面观呈近长球形,极面观呈三裂圆形,具三条萌发沟;表面纹饰均为网状;花粉粒大小极轴长为26．3－19．0μm,赤道轴宽约为21．7－8．6μm研究结果表明,胡枝子属花粉的形态结构特征支持传统分类中的属和种级水平的分类。     

胡枝子属与米口袋属花粉亚显微形态特征的比较研究

报道了山东胡枝子属6种植物花粉与米口袋属4种植物花粉的亚显微形态特征，并对两属进行了比较分析．它们韵花粉从赤道面观均呈近长球形，极面观呈三裂圆形；具三条萌发沟；花粉粒的大小，极轴长27．2～19．5μm，赤道轴宽21．3～11．8μm．两属植物花粉的大小、表面纹饰、花粉粒萌发沟的沟裂宽度均有明显差别。研究结果表明，胡枝子属和米口袋属花粉的亚显微形态特征支持传统分类中的属、种级水平的分类。     

山东绣线菊属花粉形态研究及其在分类上的意义

报道了山东绣线菊属（Spiraea L.)6种植物花粉的亚显微形态特征,花粉粒赤道面观呈近长球形或近球形,极面观呈三裂圆形,具三孔沟;表面纹饰是条脊和覆盖层穿孔;花粉粒极轴长9.3-16.1um,赤道轴宽7．1－8．8um,研究结果表明,绣线菊属花粉的亚显微形态特征支持传统的属级和种级水平的分类。     

中国脓疮草属（Panzeria）植物花粉形态的研究

首次用扫描电镜观察了国产胶疮草属（Ｐａｎｚｅｒｉａ）２种１７个供试材料的花粉形态．该属植物花粉形态相对一致，花粉粒长球形、近长球形、长圆球形或扁圆球形；大小为２７．１７μｍ×１９．７７μｍ；具三沟，沟膜上往往具颗粒；外壁具网状纹饰，极少为穿孔－网状纹饰．     

山东旋花科植物花粉亚显微形态结构研究及其分类学意义

报道了山东产旋花科3属5种植物花粉的亚显微结构特征。花粉粒的外部形态呈球形或近长球形；表面纹饰为刺状或覆盖层网眼；具有散萌发孔或三孔沟；花粉粒的大小、外壁纹饰和萌发器的形态特征及分布数量在属、种间有明显差异。研究结果表明，旋花科植物花粉的形态结构特征支持传统的属和种级水平分类。     

松属花粉形态研究及其分类学意义

本文报道了松属7种植物花粉形态的光学显微镜和扫描电子显微镜的研究结果,并分析了该属花粉的亚显微形态特征.各种花粉粒从远极面观呈近圆形、方形、椭圆形;近极而观呈椭圆形或近圆形.帽的表面纹饰为颗粒状或瘤状.花粉粒的体高×体长介干43.2μm×36.8μm～64.2μm×46.3μm之间.研究结果表明松属花粉的形态特征支持传统的属级和种级水平的分类.     

中国东北槭树属（AcerL.）七种植物花粉形态研究

用光学显微镜和扫描电镜观察了分布于我国东北地区的七种槭树属（ＡｃｅｒＬ．）植物花粉形态,本属花粉为近球形,亚长球形,亚扁球形,极面观为三裂圆形,花粉大小为（２１．４～３５．５）μｍ×（１８．７～３３．９）μｍ萌发孔类型为三沟,三拟孔沟,根据扫描电镜观察,槭树属花粉外壁多为条状纹饰,有时在条状纹饰上分布着许多小穿孔,只有糖槭（ＡｃｅｒｎｅｇｕｎｄｏＬ．）花粉外壁为细网状纹饰,网脊相连成条纹,花粉形态     

新疆甘草属植物花粉形态研究

本文作者用光学显微镜和扫描电子显微镜对甘草属(Glycyrrhiza)八种植物花粉形态进行了详细观察和比较.本属花粉形态是单花粉类型;花粉粒为长球形或近园球形,极面观为三裂园形或钝园形;具3孔沟;花粉粒为中等大小(31·6～38·7μm);外壁分层明显;外壁纹饰为细网纹和网纹.用高速离心机对Gly-cyrrhiza uralensis和Glycyrrhiza glabra两种花粉进行破壁观察其外壁的内部结构.     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with