新疆主要梨品种亲缘关系的分子标记分析

为了分析新疆主要梨品种间的亲缘关系，从160个随机十聚体引物中筛选出12种RAPD引物分析18份材料，共扩增133条带，平均每个引物扩增约11条带，其中14条带为所有材料的共有带，有119个多态位点(占89．47％)，Nel相似系数在0．5～0．723，用PHYLIP构建UPGMA、NJ树，认为：1)对选用的形态学经典分类已较明确的新疆梨、白梨、砂梨、西洋梨、秋子梨，RAPD数据完全与其相符；2)几个芽变间高度相似；3)杂种新梨1号与砀山梨、杂种新梨6号与香梨、杂种早酥梨与苹果梨分别并类；4)苹果梨独立于供试的5个种之外，建议将该品种上升为种一级阶元；5)库尔勒香梨归属于新疆梨。     

7个水稻光温敏核不育系品种(系)的RAPD多态性分析

利用RAPD技术，从60个随机引物(10bp)中落选出了31个引物，能在供试的7个水稻光温敏核不育系不同品种(系)间扩增出180条稳定性较好的多态性片段．聚类分析结果显示，7个水稻光温敏核不育系品种(系)明量地聚为三类，其中同属于株1S体细胞诱变来的SV5，SVl0发生了较大的变异，相似系数均小于0．470，而SVl和SVl4变异较小，相似系数均大于0．890．H155与杂交亲本培矮64S的遗传差异较小，与杂交亲本株1S的遗传差异较大．该结果与田间农艺性状相符：另外，从7个水稻光温敏核不育系品种(系)的整体来看，相似系数均较大，说明遗传差异较小，遗传背景单一，从而在很大程度上限制了水稻杂种化势的利用．     

金属球与无限大导体平板系统电容的研究与计算

采用镜像法与叠加系数法求解了金属球与无限大导体平板系统的电容．根据数学物理理论，本文通过引入叠加系数Cn,k的方法，在金属球与无限大导体平板系统中配置镜像电荷系列，可以精确确定镜像电荷系列中任意象电荷的位置和电量，并采用计算技术工具软件Matlab进行运算与作图，精确计算系统的电容．这种方法分析过程直观、简捷、计算精度高等特点．     

杜泊羊、藏羊和小尾寒羊AFLP多态性分析

利用11对AFLP引物组合,检测杜泊羊、藏羊和小尾寒羊池DNA遗传变异,构建了各个品种的AFLP DNA指纹图谱,根据AFLP分析结果,统计了每个引物组合在各个品种中检测到的多态性条带,计算了3个品种的遗传相似系数,并据此构建了UPGMA聚类关系图,分析了所研究羊种的遗传关系。结果表明:11对AFLP引物组合在3个绵羊品种中共检测到312条带,平均每个引物组合产生28.36条带,品种间的遗传相似系数,其中藏羊与小尾寒羊遗传相似系数最高(0.672),杜泊羊与藏羊遗传相似系数最小(0.301),聚类结果与这些羊的育成史、分化及地理分布一致。     

不可逆热变换器的基本优化关系及其应用

提出不可逆热变换器循环模型，导出其泵热率与泵热系数间的优化关系，并将它应用于太阳能热泵系统，确定了系统的总性能系数及太阳能集热器的最佳工作温度．     

利用ISSR技术对优质红锥种质资源遗传多样性的分析

利用ISSR分子标记对10个优质红锥品种进行基因组多态性分析．从20条引物中筛选的11条具有扩增多态性的引物共扩增出435条带，其中多态性条带325条，占总扩增条带的74．7％，平均每个引物扩增3．95条．ISSR标记揭示的10个优质红锥品种的遗传相似系数变化范围为0．4737～0．8081，平均值为0．7287．聚类分析可将10个优质红锥品种分为四类．     

南方鲶SME—1细胞系,草鱼CIK细胞系与原鱼种的RAPD图谱比较

研究了ＳＭＥ１和ＣＩＫ细胞系，以及南方鲶、鲶、大鳍、草鱼等６个样品的ＲＡＰＤ图谱，测定了各样品间的Ｎｅｉ相似系数和单匹配相似系数，并绘制了聚类树形图．Ｎｅｉ相似系数更适于细胞系与原种动物的相似性分析；细胞系与原鱼种的相似系数大于种间相似系数；培养时间短的ＳＭＥ１细胞与其原鱼种南方鲶的相似系数大于培养时间长的ＣＩＫ细胞与其原生鱼种草鱼的相似系数．     

尾矿排料堆筑模型的模拟相似

根据尾矿排料堆筑特点：浓度变化大，有成层移动可能，可能是层流或紊流、轴 对称、水浅、流缓、坡陡．研究了模拟相似问题。研究表明采用原型沙．令水深、单 宽流量原、模型相等，按可能性确定下面尺寸比尺：因ｈ／（ｘＳ０）值很小．有可能在 缩小尺寸的模型上满足相似条件。丈中还分析忽略次要因素包活ｈ／（ｘＳ０）不相似．区 间径流下相似．坑口位置不相似对尾矿排料堆筑的模拟相以是可以容许的．     

新疆特有高等植物的地理分布

特有高等植物的定义是分布区仅限于某一地区或仅生长在某种局部特有生境的植物种类．新疆特有高等植物的研究是新疆资源植物研究中的重要部分．本文通过对野外实习中采集的、吐鲁番沙漠值物园及标本室历年有的标本进行观察并查阅相关资料，根据“新疆植物志”中的高等植物和最近新发现的高等植物，进行收集和整理，进行系统综合描述，统计出新疆特有高等植物39科280种，被子植物34科268种，并列了了每一种的地理分布、生长环境、汉名、拉丁名（学名）、对照索引．     

包虫病基因工程疫苗免疫效果考核试验（免疫持续期一年）

对不同品种绵羊2次免疫包虫病基因工程疫苗，间隔期1月，1年后通过剖捡确定新疆细毛羊可获得83．6％的保护（减囊）率。蒙古黑头羊也同样取得了83．3％的保护（减囊）率。     

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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