马尾松不同种源染色体荧光带型的研究

分析了我国南方主要树种马尾松7个种源染色体的两种荧光带型，色霉素A3（简称CMA带）和4，6－二脒基－2－苯基咪哚（简称DAPI带）。结果表明：（1）马尾松染色体的CMA带型中存在着5种不同类型，它们分别是1对为着丝粒和臂间处均有荧光带的中间着丝粒染色体（A类型）；6对为臂间处有荧光带的中部着丝粒染色体（B类型）；1对为着丝粒处有荧光带的中部着丝粒染色体（C类型）；3对为无荧光带的近中部中部着丝粒染色体（D类型）；1对为着丝粒处有荧光带的近中着丝粒染色体（E类型）。其CMA带型公式2n=24=2A 12B 2C＋6D＋2E。（2）根据CMA的带型状况，将马尾松的7个种源分为2种类群区，第一类为江西吉安，福建漳平，贵州贵阳，四川古蔺和湖南宜樟为中部区；第二类为广东高州和广西宁明为南部区。（3）比较马尾松7种源的DAPI带型，南部区种源的染色体上的荧光带纹较中部区种源染色体上荧光带纹要多些，西部区种源染色体上的荧光带纹较东部区种源染色体上的荧光带纹亦要多些。     

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＋     

山绿豆的染色体核型分析

对山绿豆的染色体数目及核型进行了初步研究,结果２ｎ＝２２。核型分析表明,１１对染色体中,２对为正中着丝粒染色体,８对为中部着丝粒染色体,１对为近中部着丝粒染色体,其核型公式为Ｋ２ｎ＝２ｘ＝２２＝４Ｍ＋１６ｍ＋２ｓｍ,核型类型为２Ｂ型,与栽培绿豆核型Ｋ２ｎ＝２ｘ＝２２＝１８ｍ（２ＳＡＴ）＋４ｓｍ型类型（２Ｂ）相比,二者在染色体数目及核型类型上是一致的,但染色体类型及每种类型的数量是不同的。     

山绿豆(Phaseolus minimus Roxb.)的染色体核型分析

对山绿豆（ＰｈａｓｅｏｌｕｓｍｉｎｉｍｕｓＲｏｘｂ．）的染色体数目及核型进行了初步研究,结果２ｎ＝２２．核型分析表明,１１对染色体中,２对为正中着丝粒染色体,８对为中部着丝粒染色体,１对为近中部着丝粒染色体,其核型公式为Ｋ２ｎ＝２ｘ＝２２＝４Ｍ＋１６ｍ＋２ｓｍ,核型类型为２Ｂ型,与栽培绿豆（Ｐ．ａｕｒｅｕｓＲｏｘｂ．）核型Ｋ２ｎ＝２ｘ＝２２＝１８ｍ（２ＳＡＴ）＋４ｓｍ核型类型（２Ｂ）相比,二者在染色体数目及核型类型上是一致的,但染色体类型及每种类型的数量是不同的．     

草绿异色蝗的染色体C-带核型

报道了珍稀昆虫草绿异色蝗ＤｉｍｅｒａｃｒｉｓｐｒａｓｉｎａＮｉｕｅｔＺｈｅｎｇ）的染色体Ｃ－带核型．该种蝗虫（副模１）的核型为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     

短角外斑腿蝗核型和C-带的研究

本文研究了短角外斑腿蝗（Ｘｅｎｏｃａｔａｎｔｏｐｓｈｕｍｉｌｉｓｂｒａｃｈｙｃｅｒｕｓ）的核型和Ｃ带。结果表明：短角外斑腿蝗的染色体数目为２ｎ（）＝２２＋ＸＯ＝２３，全部为端着丝粒染色体；ＮＦ＝２３；核型公式为２ｎ（）＝２ｘ＝２３ｔ。中期染色体绝对长度为７００１±２７０μｍ，按相对长度可分为三组；除所有染色体都具有明显的着丝粒带外，Ｌ２，Ｍ３，Ｍ４，Ｍ５，Ｍ９还有明显的端带；染色体组中Ｃ带带纹总长与染色体总长的比值百分数为２６００±２２０％；最长与最短染色体之比为３７８∶１，臂比大于２∶１的染色体在染色体组中的比例为零，短角外斑腿蝗的核型属“１Ｂ”核型     

贵阳地区蝗虫的染色体研究

本文报道了贵阳地区５科１６属２０种蝗虫的染色体研究结果：２０种蝗虫中除锥头蝗科２种负蝗的染色体数目为２ｎ（）＝１８＋ＸＯ＝１９外，其余都是２ｎ（）＝２２＋ＸＯ＝２３，但所有染色体都是端着丝粒染色体，都具有着丝粒Ｃ－带；所不同的是染色体长度，核型类型，Ｃ－带带纹及其总长度与染色体组长度的比值％等     

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。     

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     

旋花科三种植物的染色体研究

对旋花科三种植物的染色体进行了研究,结果显示：藤长苗（Ｃａｌｙｓｔｅｇｉａｐｅｌｉｔａ（Ｌｅｄｅｂ．）Ｇ．Ｄｏｎ）染色体数目为２ｎ＝２０,核型公式Ｋ（２ｎ）＝２０＝２Ｍ＋１６ｍ＋２ｓｍ,核型“１Ｂ”型;打碗花（ＣａｌｙｓｔｅｇｉａｈｅｄｅｒａｃｅａＷａｌ．）的染色体数目为２ｎ＝２０,核型公式Ｋ（２ｎ）＝２０＝２Ｍ＋１６ｍ＋２ｍ（ｓａｔ）,核型“１Ａ”型;田旋花（ＣｏｎｖｏｌｖｕｌｕｓａｒｖｅｎｓｉｓＬ．）的染色体数目为２ｎ＝７８．     

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.     

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     

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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