中国蟋蟀总科昆虫分类学研究概况

简述了中国蟋蟀总科昆虫的分类系统及其分类学的现状;在形态学方面,中国蟋蟀总科昆虫已知230种(亚种),隶属于10科69属;概述了蟋蟀鸣声和发声器、细胞分类学、分子系统学等3个方面的研究概况.     

蟋螽总科的染色体研究概况及核型演化

染色体的研究对细胞遗传学、生物科学分类及生物演化的研究有着重要的意义。本文比较详细地叙述了蟋螽总科染色体研究概况及核型的演化。     

瓢蜡蝉科Issidae(半翅目:蜡蝉总科)分类研究进展

瓢蜡蝉科隶属于半翅目头喙亚目蜡蝉总科,世界性分布,共有155属973种.本研究回顾了瓢蜡蝉科160余年的分类研究历史及不同阶段瓢蜡蝉科的分类系统,介绍了国内外分类研究的代表人物及其所取得的成就,简述了瓢蜡蝉形态学特征在分类研究中的价值,并从研究现状、研究手段等方面对国内外瓢蜡蝉科分类学研究做了展望.     

陕西省蟋蟀总科的初步报道

蟋蟀总科（Ｇｒｙｌｏｉｄｅａ）是普遍的农林害虫，也是中医药重要成份和娱乐昆虫。本文记载陕西省蟋蟀总科４科１６属３７种，其中有１新属，３新种，２７陕西新纪录种     

湖北蝗虫研究--Ⅰ.蚱总科和蜢总科

以检索表的形式报道了湖北省蚱总科蝗虫4科13属25种，其中宽顶波蚱和庐山台蚱为湖北省新纪录；蜢总科蜢科2属3种。     

伊朗青蜂科和切叶蜂科种类（膜翅目：青蜂总科，蜜蜂总科）

本文记述了伊朗膜翅目Hymenoptera青蜂科Chrysididae和切叶蜂科MegachiLidae的种类，其中青蜂科7属（ Chrysis，Chrysura，Cleptes，Pseudomalus，Trichrysis，Parnopes和Spinolia）10种，切叶蜂科10属（ Anthidium， Anthidiellum，Chalicodoma，Coelioxys，Heriades，Hoplitis，Megachile，Osmia，Protosmia 和Stelis）17种。     

蝗虫前肠形态及分类学价值的研究Ⅰ．癞蝗科、瘤锥蝗科和锥头蝗科

对分布在我国西北及西南三科五属八种蝗虫前肠形态的分类学价值进行了研究．蝗虫前肠依表皮脊及刺的特征可区分为四区，这四区形态及贲门瓣结构与其它分类性状呈正相关，可作为分类性状运用．以亮绿染色后封片，体视摄影的应用，为前肠形态特征的研究提供了方便     

中国螽斯总科二新种（直翅目：螽斯总科）

报道了螽斯总科蛩螽科一新种，缙云隐翅螽Ａｃｙｒｔａｓｐｉｓｊｉｎｙｕｎｅｎｓｉｓｓｐ．ｎｏｖ；螽斯科一新种，黄山寰螽Ａｔｌａｎｔｉｃｕｓｈｕａｎｇｓｈａｎｅｎｓｉｓｓｐ．ｎｏｖ．模式标本均保存于陕西师范大学动物研究所．     

山茱萸科的系统分类及应用研究进展

山茱萸科(Cornaceae)是一类具有重要应用价值的植物,但其分类体系还存在诸多争议;在总结有关山茱萸科分类方法、地位研究的基础上,对山茱萸科的系统分类在孢粉学、分子生物学、木材解剖学、植物化学、经典分类学等领域内的研究及系统分类的观点进行了比对分析,提出了山茱萸科的系统分类的处理建议;对山茱萸科资源在生产实践中的应用作了归纳总结。     

贵州蝗总科5种蝗虫的核型

研究了贵州蝗总科(Acridoidca)的梭蝗(Tristriapisciforme),僧帽佛蝗(Phlaeobainfumata),花胫绿纹蝗(Alolopusthalassinustamulus),东方凸额蝗(Tranliaorientalisorientalis)和中华剑角蝗(中华蚱蜢)(Acridacinerea)等5种蝗虫的核型。结果显示:5种蝗虫的染色体数目均为2n(♂)=22 XO=23,全部是端部着丝粒染色体,核型公式:2n(♂)=2X=23t;NF=23;按相对长度都可分成L、M、S3组,梭蝗、僧帽佛蝗和花胫绿纹蝗为“4C“核型,东方凸额蝗和中华剑角蝗为“4B“核型。     

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.     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-