福建两个蛋鸭品种和常见野鸭线粒体DNA(mtDNA)限制性酶切图谱的比较

用７种限制性内切酶（ＢａｍＨⅠ、ＢｇｌⅡ、ＥｃｏＲⅠ、ＥｏｃＲⅤ、ＰｓｔⅠ、ＳａｃⅠ、ＸｂａⅠ）分析了蛋鸭（金定鸭、莆田黑鸭）、野鸭（斑嘴鸭、绿头鸭）的ｍｔＤＮＡ限制性类型，并用双酶法构建了以上鸭类的ｍｔＤＮＡ限制性酶切图谱．结果表明，蛋鸭与野鸭在ｍｔＤＮＡ结构上发生了明显分岐．比较两种野鸭和金定鸭的图谱，发现金定鸭与绿头鸭的亲缘关系较近．     

草鱼线粒体DNA酶切图谱的研究

用１０种限制性内切酶对草鱼肝脏线粒体ＤＮＡ进行了分析，其分子太小约１６．５８ｋｂ．ＰｓｔＩ，ＢａｍＨＩ，ＸｂａＩ，ＢｇｌＩ，ＨｉｎｄⅢ，ＢⅡ，ＰｖｕⅡ，ＸｈｏⅠ，ＥｃｏＲⅠ，ＳａｌⅠ在草鱼ｍｔＤＮＡ分子上分别具有２，３，３，４，７，３，６，２，４及０个切点。根据单酶解及双酶解结果建立了草鱼ｍｔＤＮＡ的限制性酶切图谱。     

河田鸡线粒体DNA物理图谱

运用差速离心法、蛋白酶Ｋ及ＲＮａｓｅ消化法制备并纯化河田鸡（ＧａｌｕｓｇａｌｕｓｄｏｍｅｓｔｉｃｕｓＨｅｔｉａｎｂｒｅｅｄ）的线粒体ＤＮＡ（ｍｔＤＮＡ）．用１１种限制酶对其进行单酶切分析,结果表明,ＡｖａＩ、ＢａｍＨＩ、ＢｇｌＩ、ＤｒａＩ、ＥｃｏＲＩ、ＨｐａＩ、ＰｖｕⅡ、ＳａｃＩ、ＳａｌＩ和ＳｔｕＩ在河田鸡ｍｔＤＮＡ上分别有５、２、４、５、１、３、４、３、３和＞９个酶切位点,Ｓｃａｌ在不同个体河田鸡ｍｔＤＮＡ上检测出两种限制性格局,分别有２和３个酶切位点．此外,还用ＢａｍＨＩ、ＢｇｌＩ、ＤｒａＩ、ＥｃｏＲＩ、ＨｐａＩ、ＰｖｕⅡ、ＳａｃＩ、ＳａｌＩ和ＳｃａＩ进行双酶切,构建了ｍｔＤＮＡ的物理图谱     

长吻Wei肝脏线粒体DNA的研究

采用密度梯度离心法及ＤＮａｓｅ Ｉ、ＲＮａｓｅ消化法制备并纯化了长吻Ｗｅｉ肝脏线粒体ＤＮＡ（ｍｔ ＤＮＡ）。用９种限制性内切酬谢ｍｔ ＤＮＡ进行了分析。Ｘｈｏ Ⅰ，Ｂｇｌ Ⅱ、ＥｃｏＲ Ⅰ、Ｐｓｔ Ⅰ、Ｂｇｌ Ⅰ、ＢａｍＨ Ⅰ、Ｈｉｎｄ Ⅲ、Ｓａｌ Ⅰ在长吻Ｗｅｉ ｍｔＤＮＡ分子上分别具１、３、３、２、１、２、４、７、０个切点。ｍｔ ＤＮＡ分子量约１０．３１×１０＾６道尔顿，大小为１６．６９ｋｂ。根据     

丝羽乌骨鸡mtDNA限制酶酶切研究

应用碱变性法制备丝羽乌骨鸡（简称丝羽鸡）肝细胞ｍｔＤＮＡ，测其分子量为１８．５ｋｂ．用限制性内切酶进行酶切分析，结果表明，ＢａｍＨⅠ、ＰｓｔⅠ、ＨｉｎｄⅢ、ＳａｃⅠ在丝羽鸡ｍｔＤＮＡ分子上分别有１、１、１、２个酶切位点．根据单酶和双酶完全酶切片段的分子量，建立了丝羽鸡ｍｔＤＮＡ的限制酶图谱．与由来亨鸡肝细胞ｍｔＤＮＡ为材料所得的研究结果比较，发现丝羽鸡与来亨鸡在ｍｔＤＮＡ种质方面存在着较大差异．     

狮头鹅,莱茵鹅和灰雁mtDNARFLP分析

用ＢａｍＨⅠ、ＢｇｌⅠ、ＥｃｏＲⅠ、ＥｃｏＲⅤ、ＨｉｎｄⅢ、ＨｐａⅠ、ＭｌｕⅠ、ＰｓｔⅠ、ＰｖｕⅡ、Ｓａｃ、ＳａｃⅡ、ＳｃａⅠ、ＳｍａⅠ等１３种限制性内切酶对狮头鹅、莱茵鹅和灰雁的线粒体ＤＮＡ进行了单酶消化。结合我们前期的工作,结果表明：狮头鹅和中国鹅其他几个品种的限制性类型完全相同,莱茵鹅和郎德鹅的限制性类型也完全一致;狮头鹅和莱茵鹅间,ＥｃｏＲⅤ、ＳｃａⅠ的限制性类型存在差异,狮头鹅和灰雁间,     

长爪沙鼠线粒休DNA限制物理图谱的研究

长爪沙鼠线粒体ＤＮＡ经分离提纯，采用ＢｚｍＨＩ，ＢｇｌⅡ，ＥｃｏＲⅠ和＊ＰｓｔⅠ四种内切酶对１３只长爪鼠ｍｔＤＭＡ进行了酶切分析。其中大多数长爪沙鼠酶切图谱相同，用上述四种酶切分别产生１、５、６、和３个片段，我们称之为Ａ型；另３只氏爪沙鼠经ＢｇｌⅡｉ和ＥｃｏＲ酶切后分别产生４个片段，称为Ｂ型。利用λ—ＤＮＡＨｉｎｄⅢ、ΦＸ—ｌ７４ＨＡＥⅢ、λ—ＤＮＡＢｓｔＥⅡ酶切片段作为标准，以琼脂糖凝胶电泳法测出长爪沙鼠ｍｔＤＮＡ内切片段大小，各种酶切片段分子量加起来均为１６．０５ｋｂ。经多次ＢａｍＨⅠ对ｍｔＤＮＡ单酶切，发现只有一个切点，以此切点为零点，分别与其它三种酶组合进行双酶切时，均未改变原来各酶单酶切片段大小，这说明另外三个酶均有一个切点接近零点。我们根据双酶解和不完全酶解片段的大小分析确定了各酶切片段之间的相对位置，绘制了ｍｔＤＮＡ的物理图谱。本次得到的长爪沙鼠的ｍｔＤＮＡ物理图谱是以ＢａｍＨⅠ酶切点为零点，ＰｓｔⅠ酶切片段ｃ→ａ为顺时针方向，由四种内切酶对ｍｔＤＮＡ的水解结果而得到的１５个片段组成，其中大部内切酶切点的相对位置是用双酶解结果来定位的，小部分切点（６个）则是利用不完全酶解结果定位的。１５个位点     

乌珠穆沁羊mtDNA的RFLP研究

用ＡｐａⅠ等７种识别６碱基的限制性内切酶研究了１４只乌珠穆沁羊ｍｔＤＮＡ的ＲＦＬＰ。结果表明,在所研究的个体中检测到３７个酶切位点,１７种限制性态型,其中ＢａｍＨⅠ和ＢｇｌⅠ表现出多态,ＸｈｏⅠ无切点。１７种限制性态型可归结为３种基因单倍型,即单倍型Ⅰ（ＢａｍＨⅠ－Ｃ,ＢｇｌⅠ－Ａ）、单倍型Ⅱ（ＢａｍＨⅠ－Ａ,ＢｇｌⅠ－Ａ）和单倍型Ⅲ（ＢａｍＨⅠ－Ｃ,ＢｇｌⅠ－Ｂ）。ｍｔＤＮＡ多态度π值为０．０２７％,表明乌珠穆沁羊ｍｔＤＮＡ多态性比较贫乏。     

大熊猫线粒体DNA酶切片段长度多态性研究

用１２种限制性内切酶（ＢａｍＨⅠ，ＥｃｏＲⅠ，ＥｃｏＲⅤ，ＸｈｏⅠ，ＰｓｔⅠ，ＭｓｐⅠ，ＸｂａⅠ，ＰｖｕⅡ，ＨｉｎｄⅢ，ＨａｅⅢ，ＳａｃⅠ，ＨｐａⅡ）对秦岭大熊猫线粒体ＤＮＡ进行了酶切。测定和分析了每种酶所产生片段的数量和大小，并与四川大熊猫的限制性片段进行了比较，发现在相同的６种酶的１６个酶切位点中有一个不同，表明这两地群体间存在着线粒体ＤＮＡ的多态性。其研究结果为进一步研究和保护大熊猫提供了重要依据。     

中国锦铃虫核多角体病毒（HeliothisarmigeraNPV）VHA273毒株 …

ＶＨＡ２７３毒株原为ＭＮＰＶ型，经纯系中国棉铃虫扩增而得出约１０％的ＳＮＰＶ，高度纯化两型多角体，温和碱解后，酚法抽提ＳＮＰＶＤＮＡ和ＭＮＰＶＤＮＡ，限制性内切酶ＢｇｌⅡ，ＢａｍＨＩ，ＥｃｏＲＩ和ＨｉｎｄⅢ分别平行酶切两种ＤＮＡ，依次均得出１１，８，１４和１３条电泳带。     

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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