云斑车蝗绿色个体和褐色个体的核型和C-带

研究了云斑蝗(Gastrimargus marmoratus)绿色个体和褐色个体的核型和C-带。结果显示：2种体色个体的染色体数目均为2n(♂)：22 XO=23,全部是端部着丝粒染色体;核型公式：2n(♂)：2X=23t;NF=23;都可按相对长度分成L、M、S3组;都具着丝粒C带,异染色质总量是：绿色个体为16．31％;褐色个体为14．84％。     

贵州蝗总科5种蝗虫的核型和C-带

研究了贵州斑腿蝗科(Catantopidae)的云贵希蝗(Shirakiacris yunkweiensis),中华越北蝗(Tonkinacris sinen-sis),中华板胸蝗(Spathosternum prasiniferum sinense)和网翅蝗科(Areypteridae)的青脊竹蝗(Ceracris nigricornis nig-ricornis)以及斑翅蝗科(O edipodidae)的疣蝗(Trilophida annulata)等5种蝗虫的核型和C—带。结果显示:5种蝗虫的染色体数目均为2n(♂)=22+x0=23,全部是端部着丝粒染色体;核型公式:2n(♂)=2x=23 t:NF=23;按相对长度,除中华越北蝗分为L、M两组外,其余4种都可分为L、M、S3组;都具着丝粒C—带,但端带和居间带不是每种每条染色体都有;异染色质总量是中华越北蝗的(27.48%)最多,青脊竹蝗的(19.13%)最少。     

贵州两种直斑腿蝗核型和C带的比较研究

本文研究了贵州短角直斑腿蝗(Stenocatantops miststshenkoi)和长角直斑腿蝗(S.splendens)的核型和C带.结果显示:2种直斑腿蝗的染色体数目均为2n(♂)=22 xo=23,都属眷部着丝粒染色体,核型公式2n(♂)=23t,NF=23,都属"4B"核型,都可按相对长度分成L、M、S 3组,都具着丝粒C带,但端带不是每种每条染色体都有,长角直斑腿蝗的异染色质总量(35.79%)比短角直斑腿蝗的(27.74%)多.     

海南小稻蝗染色体核型及C-带带型分析

对海南小稻蝗精巢染色体核型及C带带型进行了分析.结果表明:海南小稻蝗核型为2n(♂)=22 xo,NF=23.全部染色体均为着丝粒带染色体,都具有着丝粒C带,1号和8号具有居间带,1号的C带带纹丰富,9号染色体弱染,其余染色体为强染,异染色质总量为14 64%,最长与最短染色体之比为5 5∶1.     

宽翅曲背蝗染色体核型研究

用常规染色体制片法对宽翅曲背蝗Paracyptera microptera meridionalis（Ikonn.）染色体核型进行分析,结果表明：宽翅曲背蝗的性别决定机制XO型,染色体数目为2n（♂）=23=22＋X;染色体组式为3L＋7M＋1S＋X;染色体核型2n（♂）=23=7m＋2sm＋3t;染色体臂数为NF=41。     

云斑车核型和C—带的研究

研究了云斑车蝗（Ｇａｓｔｒｉｍａｒｇｕｓ ｍａｒｏｒａｔｕｓ ｔｈｕｎｂｅｒｇ１８１５）的核型和Ｃ－带。结果表明：云斑车蝗的染色体数目：２ｎ（♂）＝２２＋ｘＯ＝２３,全部为端部着丝粒染色体;核型公式：２ｎ（♂）＝２ｘ＝２３ｔ,ＮＦ＝２３。按相对长度云斑车蝗染色体可分成Ｌ、Ｍ、Ｓ３组。除所有染色体均有明显的着丝粒带外,Ｘ染色体还有端带。最长与最杂色体之比为３．８１：１。臂比大于２：１的染色体在染色体     

贵州7种负蝗核型和C带的比较

报道了贵州短额负蝗(Atractomorphasinensis),纺梭负蝗(A.burri),云南负蝗(A.yunnanensis),奇异负蝗(A.peregrina),令箭负蝗(A.sagittaris),柳枝负蝗(A.psittacina)和长额负蝗(A.lata)等7种负蝗的核型和C带。结果显示,7种负蝗的染色体数目均为2n(♂)=18+xo=19,全部是端部着丝粒染色体,核型公式:2n(♂)=2x=19t,NF=19,最长染色体都是X染色体,都属"4B"核型,都可按相对长度分成L、M两组,都具着丝粒C带,但端带和居间带不一定每种每条染色体都有,异染色质总量是短额负蝗的(42 12%)最多,长额负蝗的(18 23%)最少。     

云斑车蝗核型和C-带的研究

研究了云斑车蝗 (Gastrimargusmaroratusthunberg 1815 )的核型和C一带。结果表明 :云斑车蝗的染色体数目 :2n(♂ ) =2 2 +xO =2 3,全部为端部着丝粒染色体 ;核型公式 :2n(♂ ) =2x =2 3t,NF =2 3。按相对长度云斑车蝗染色体可分成L、M、S3组。除所有染色体均有明显的着丝粒带外 ,X染色体还有端带。最长与最短染色体之比为 3 81∶1,臂比大于 2∶1的染色体在染色体组中的比例为 1。云斑车蝗的核型属“4B”核型。     

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。     

青海三种土蝗（直翅目：蝗总科）的染色体核型分析

用常规染色体制方法对青海高山草地三种土蝗即青藏雏蝗、红翅皱膝蝗和大垫尖地翅蝗的染色体数目的研究结果：青藏雏蝗的染色体数目为2n（♂）=17=16 XO;常染色体类型为中着丝点染色体（m,6条）和端着丝点染色体（T,10条）;性染色体类型为端着丝点染色体;核型公式为：K（2n,♂）=17=6m 11T=6L 6M 4S XO。红翅皱膝蝗和大垫尖翅蝗的染色体数目均为2n(♂）=23=23T=4L 12M 6S XO。结果表明：不同科蝗虫的重要区别在于染色体数目与核型的差异,同科内不同属之间的蝗虫在常染色体相对长度有明显差异。     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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