试论植物标本室的意义与功能

本文从植物标本室与植物学发展、植物资源开发及植物学知识传播三方面的关系论述了植物标本室的意义,首次提出了它的三项基本功能.即实体功能、信息功能和示范功能.     

中国民族植物学研究三十年概述与未来展望

民族植物学(Ethnobotany)1896年诞生于美国,1982年引入我国,经过三十年不断努力,中国民族植物学已经形成了自己的研究理论体系、内容和方法,在植物资源可持续利用、生物多样性保护、文化多样性保护和社区发展等领域,取得一些研究进展和若干成果.本文在针对民族植物学的产生与发展背景进行简述的基础上,对我国民族植物学的学科建设与理论创新发展和研究进展与成果进行了概括性论述;并提出我国民族植物学未来发展的五个主要方面以供讨论.     

试论植物标本室的意义与功能

本文从植物标本室与植物学发展、植物资源开发及植物学知识传播三方面的关系论述了植物标本室的意义，首次提出了它的三项基本功能。即实体功能、信息功能和示范功能。     

植物“作证”

现代科学研究证明，植物也有血型、有电波……于是，植物有了一个新功能：作证。运用植物学原理来做“见证人”协助破案的科学，叫做法医植物学。     

植物学教学与学生综合能力的培养

植物学是一门比较古老的学科,教学内容从种子植物的形态解剖到植物的系统分类,内容庞杂繁多,如何在有限的教学时间内完成教学任务?如何保证教学的质量?几年来我们在植物学教学中,不断深化改革,注重学生综合能力的培养,取得了一定的成绩,现将具体作法作一阐述.1 重视绪论课教学,引导学生热爱植物学绪论课的教学是本门课程的开场曲,所以上好绪论课非常重要.因为它概括了植物学的产生和发展过程,以及与相关学科的联系,所以绪论课的教学     

本期导读

民族植物学(Ethnobotany)1896年诞生于美国,1982年引入我国,经过三十年不断努力,中国民族植物学已经形成了自己的研究理论体系、内容和方法,在植物资源可持续利用、生物多样性保护、文化多样性保护和社区发展等领域,取得一些研究进展和若干成果.中国科学院昆明植物研究所研究员、中国民族植物学会发     

秦岭——观赏植物资源的宝库

秦岭是我国温带与亚热带的主要分水岭.在植物种类上它是华中、华北及青藏高原植物的交汇地带,再加上本区有不少特有种类,所以这里的植物十分丰富.因而,秦岭也就成了我国研究植物学的良好基地和开发利用植物资源的重要宝库.     

张Yan教授与我国的植物科学

张Ｙａｎ，植物学家和生物学教育家。中国近代植物学的先驱，现代实验性植物生理学和植物生态学的奠基人。最先自编我国第一套植物学，植物形态学，植物解剖学，种子植物分类学，植物生态学和植物生理学教科书。长期从事科学科的教学和研究工作，为我国的生物科学和教育事业的建立和发展，贡献了自己的一切知识和力量。     

中国植物学会古植物学分会第八届年会暨山东植物学会学术研讨会在山东召开

在4月的春风中,中国植物学会古植物分会第八届年会暨山东植物学会学术研讨会在山东聊城大学举行。会议自23日—26日共四天。出席会议的有古植物学会理事长李承森研究员,山东省植物学会理事长李法曾教授,赵尊田教授及相关代表65人。聊城大学的有关领导莅临会议。众多植物界与古植物界同仁为会议发来贺电,祝贺大会的召开。会议分两组进行学术研讨,第一组是山东植物学会研讨会,针对植物学领域以及学科间交叉等有关问题进行了广泛的讨论,并交流了植物学教学改革等内容。第二组是古植物学年会学术报告。主要有以下几方面的内容:①云南早泥盆纪植…     

黄山植物多样性多媒体教学软件设计与制作

本文旨在如何利用多媒体电脑、N-TEK扫描仪将黄山丰富的植物多样性制作成多媒体软件进行展现.主要以Authorware 5.0软件作为应用系统开发工具,对实地拍摄的近千种黄山植物彩色图片进行整理,然后根据克郎奎斯特(A.Cronquist)分类系统进行编排,每种植物都注明了种中文名、拉丁学名和所属科名.制作出的"黄山植物多样性多媒体教学软件"操作简便,易于掌握,非常适合于高等院校黄山植物学野外实习教学和植物学课堂教学使用.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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