啤酒大麦染色体GiemsaC带核型比较分析

采用改良Ｃ带法对啤酒大麦７个品系染色体的Ｇｉｅｍｓａ Ｃ带核型进行了比较分析，结果表明，不同大麦品系间相同序号染色体的Ｇｉｅｍｓａ Ｃ带分布相似，带的数目和强弱存在明显差异，不同染色表现不同程度的Ｃ带带型多样性，第１，３，４染色体的带型具有较大的多样性，而各品系间第６染色体地带型相同。     

菊蝗和黄佛蝗三个种染色体C带带型分析

采用染色体Ｃ带技术对剑角蝗科（Ａｃｒｉｄｉｄａｅ）菊蝗属（ＰｈｌａｅｏｂｉｄａＩ．Ｂｏｌ）２个种（黄纹菊蝗Ｐ．ｃｈｌｏｒｏｎｅｍａＬｉａｎｇ和海南菊蝗Ｐ．ｈａｉｎａｎｃｎｓｉｓＢｉｅｔＣｈｅｎ）和黄佛蝗属（ＣｈｌｏｒｏｐｈｌａｅｏｂａＲａｅｍｍ）１个种（长翅黄佛蝗Ｃ．ｌｏｎｇｕｓａｌａＺｈｅｎｇ）染色体进行了常规核型和Ｃ带带型分析并绘制了Ｃ带核型示意图．结果表明：菊蝗属两个种染色体数目相同２ｎ♂＝２１，分组形式相同，均为３Ｌ，６Ｍ，１Ｓ，Ｘ，而黄佛蝗属的长翅黄佛蝗染色体数目２ｎ♂＝２３，分组形式：２Ｌ，７Ｍ，２Ｓ，Ｘ，反映了属间染色体组型有差异．另外两种菊蝗Ｃ带带型不同，说明Ｃ带带型在种间区分上有重要意义．     

点苍山地区蚱属2种昆虫染色体C带研究

对采自点苍山地区蚱属2个种,即日本蚱Tetrix japonica(Bolivar)、洱海蚱T. erhaiensis Zheng et Mao进行了核型及C带比较分析,结果表明:2种蚱的染色体数目2n(♂)=12+XO=13,全部是端着丝粒染色体;染色体组式均为2L+4M+X;都具着丝粒C带,端带不是每种每条染色体都有;异染色质总含量洱海蚱高于日本蚱。     

四种佛蝗染色体核型与C带带型研究

采用染色体Ｃ带技术，对剑角蝗科（Ａｃｒｉｄｉｄａｅ）佛蝗属（ＰｈｌａｅｏｂａＳｔａｌ）的僧帽佛蝗（Ｐ．ｉｍｆｕｍａｔａＢｒ．－Ｗ、白纹佛蝗（Ｐ．ａｌｂｏｅｍａＺｈｅｎｇ）、短翅佛蝗（Ｐ．ａｕｇｕｓｔｉｄｏｒｓｉｓＢｏｌ．）、长角佛蝗（Ｐ．ａｎｔｅｎｎａｔａＢｒ．－Ｗ．）四个种的染色体进行了常规核型和Ｃ带带型分析研究，绘制了Ｃ带核型示意图二结果表明，四种佛蝗的染色体数都为２ｎ＝２３．具有２～３对大型，５～７对中型，２～３对小型染色体．这四个种的主要区别表现在Ｃ带核型的差异上．Ｃ带带型差异可反映种间的分类关系．     

四种佛蝗染色体核型与C带带型研究

采用染色体Ｃ带技术，对剑角蝗科（Ａｃｒｉｄｉｄａｅ）佛蝗属（ＰｈｌａｅｏｂａＳｔａｌ）的增强佛蝗（Ｐ．ｉｍｆｕｍａｔａＢｒ．－Ｗ、白纹佛蝗（Ｐ．ａｌｂｏｎｅｍａＺｈｅｎｇ）短翅佛蝗（Ｐ．ａｎｇｕｓｔｉｄｏｒｓｉｓＢｏｌ）、长角佛蝗（Ｐ．ａｎｔｅｎｎａｔｅＢｒ．－Ｗ）四个种的染色体进行了常规核型和Ｃ带带型分析研究，绘制了Ｃ带核型示意图，结果表明，四种佛蝗的染色体数都为２ｎ♂＝２３．具有２～３对大型，     

泥鳅的Ag-NORs带和C带研究

泥鳅的染色体组型为２ｎ＝５０＝８ｍ＋６ｓｍ＋３６ｔ;具有２对Ａｇ－ＮＯＲｓ分别位于ｓｍ３和ｔ３两对染色体的长臂端部;其深染Ｃ带区可以丰丝粒Ｃ带和臂端Ｃ带两类;前位于部分染色体的着丝部位,后与Ａｇ－ＮＯＲｓ相对应。没有发现与性别相关联的带型特征。     

甘肃鼢鼠(Myospalax cansus)、秦岭鼢鼠(M.rufescens)的染色体组型和C带研究

报道了甘肃鼢鼠（Ｍｙｏｓｐａｌａｘｃａｎｓｕｓ）、秦岭鼢鼠（Ｍ．ｒｕｆｅｓｃｅｎｓ）的染色体组型和Ｃ带带型．发现两种鼢鼠在染色体组型及Ｃ带带型上均有一定差异．其中秦岭鼢鼠的染色体组型和两种鼢鼠的Ｃ带带型属首次报道．文中对有关的分类学问题进行了初步讨论．     

草绿异色蝗珠染色体C—带核型

报道了珍稀昆虫草绿异色ｍｅｒａｃｒｉｓ ｐｒａｓｉｎａ Ｎｉｕ ｅｔ Ｚｂｅｎｇ）的染色体Ｃ－带核型、该种蝗虫的型为２ｎ＝２２＋ＸＯ，全部染色体为端部着丝粒染色体，Ｃ带主要分布在着丝粒区，３号染色体具有端带，５号染色体Ｃ带带纹非常丰富。     

黑芥（Brassica nigra）核型和Giemsa C带带型的研究

研究了黑芥的核型和染色体的Ｇｉｅｍｓａ Ｃ带带型，黑芥有８对染色体，４对是中部着丝粒染色体，其中４对是亚中部着丝粒染色体，在４对亚中部着丝粒染色体中有２对具随体，黑芥的核型公式为２ｎ＝２ｘ＝１６＝８ｍ＋４ｓｍ＋４ｓｍ（ＳＡＴ）用ＨＳＧ法得到ＧｉｅｍｓａＣ带带型，黑芥的Ｃ带带型为ＣＩＴ型，黑芥的染色体具有着丝粒带、中间带，端带和全带，黑芥的ＧｉｅｍｓａＣ带带型公式为２ｎ＝２ｘ＝１６＝ＣＩＴ型＝２Ｃ＋     

大仓鼠(山西亚种)染色体组型及C带、G带研究

研究了分布于陕西北部的大仓鼠山西亚种的染色体组型、Ｃ带和Ｇ带，核型公式Ｋ（２ｎ）＝４ｍ＋２２ｔ＋♀ＸＸ（Ｓｔ，Ｓｔ）♂ＸＹ（Ｓｔ，ｍ），与大仓鼠指名亚种组型一致，Ｃ带均为着丝点带，Ｙ，第１２、１３对染色体无带．对大仓鼠山西亚种的Ｇ带作了描述，并与指名亚种比较，发现有明显差异．     

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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