γ-氨基丁酸对家鸽(Columba livia)顶盖脑片Ⅲ层神经元电活动的影响

在２５只家鸽的离体顶盖脑片上,用玻璃微电极胞外记录到顶盖Ⅲ层神经元自发放电单位５５个,观察了γ氨基丁酸（ｇａｍｍａａｍｉｎｏｂｕｔｙｒｉｃ,ＧＡＢＡ）及其拮抗剂以及电刺激Ⅱａ～ｆ亚层对Ⅲ层神经元电活动的作用．作用显示：脑片灌流ＧＡＢＡ（１０－６ｍｏｌ／Ｌ,３ｍｉｎ）后,１６／２１个单位（占７６．２％）放电频率减少,１／２１个单位（占４．８％）放电频率增加,４／２１个单位（占１９．６％）放电频率无变化．ＧＡＢＡ的这种减频作用可被１０－６ｍｏｌ／Ｌ荷包牡丹碱（ｂｉｃｕｃｕｌｉｎｅ,ＢＩＣ）逆转．１４个被Ⅱａ～ｆ亚层刺激传入减频的Ⅲ层神经元,其中１１个单位（占７８．６％）的减频作用可被ＢＩＣ阻断,另３个单位则不产生阻遏作用．上述药物的作用具有可逆性和重复性．结果表明：家鸽顶盖Ⅲ层中可能有ＧＡＢＡ能纤维的到达,Ⅲ层内存在ＧＡＢＡ敏感神经元．顶盖Ⅱａ～ｆ亚层与Ⅲ层神经元间的抑制性突触传递过程中有ＧＡＢＡ及其相应的ＧＡＢＡＡ型受体参与     

不同硫酸盐添加剂对铅蓄电池正极性能的影响

采用６Ｖ－６Ａｈ电池测定了含不同硫酸盐添加剂的正极活性物质利用率及电池的湿储存性能，结果表明：含添加剂硫酸亚锡、硫酸钠、硫酸镉和硫酸铋的正极在５Ａ（１．２ｈ率）恒流放电时，其活性物质利用率分别为３８．６％、３６．９％、３５．９％和３４．１％，而无添加剂时则为３２．４％；电池经１年储存后，在相同的放电条件下，测得电池年自放电率，分别为２６．７％，１４．９％，１９．８％及１１．７％，而无添加剂时则为２     

新型静止无功发生器的 GTO 保护

分析了新型静止无功发生器（ＡＳＶＧ）装置中可能出现的非正常运行状态及应采取的ＧＴＯ保护措施，包括：大功率门极可关断晶闸管（ＧＴＯ）门极驱动器设计，以实现ＧＴＯ的正确开通及关断，并提出ＧＴＯ串联运行时门极驱动器的设计要求；ＧＴＯ的过电压保护，包括关断过电压保护、瞬态浪涌过电压保护及直流侧过电压保护；ＧＴＯ的过电流保护，包括负载过电流保护、ＡＳＧＶ输出侧短路保护、逆变器桥臂直通保护。针对情况最严重的桥臂直通短路，设计了一种环流过电流保护，并给出了试验结果。在此基础上，以±３００ｋｖａｒＡＳＶＧ为例，给出了分级动作的装置整体保护方案。±３００ｋｖａｒＡＳＶＧ装置的试运行验证了作者所给出各种保护方案的可行性及正确性。     

中国人血管紧张肽原基因M235T多态位点与原发性高血压的关联分析

研究了中国汉族自然群体中血管紧张肽原基因（ＡＧＴ）Ｍ２３５Ｔ多态位点在原发性 高血压患者和同龄对照者之间的等位频率分布．观察到ＡＧＴ基因的Ｍ２３５Ｔ位在中国汉族 人群中存在两个等位因子的遗传多态性（Ｍ２３５／２３５Ｔ）,其杂合率（ｈｅｔｅｒｏｚｙｇｏｓｉｔｙ）为３０％． Ｔ２３５基因在高血压群体中为８８．７％,在正常人群的频率为７９．０％,两者有显著性差异（ｘ２＝ ６．２６４,ｐ＜０．０２）．提示中国人血管紧张肽原基因（ＡＧＴ）Ｍ２３５Ｔ多态位点与原发性高血压之 间有显著关联．     

各种布尔矩阵最大广义逆

设Ａ是布尔矩阵，依据４个性质、ＡＧＡ＝Ａ，ＧＡＧ＝Ｇ、（ＧＡ）￣Ｔ＝ＧＡ、（ＡＧ）￣Ｔ＝ＡＧ的不同组合，定义了五种广义逆Ａ￣－、Ａｒ￣－、Ａ＿ｍ￣－、Ａ＿ｌ￣－、Ａ￣＋，这里Ｇ是布尔矩阵．本文中，我们证明了，如果Ａ￣－、Ａｒ￣－、Ａｍ￣－、Ａ＿ｌ￣－、Ａ￣＋，存在，那么它们一定有最大广义逆，其表示分别为（Ａ￣ＴＡ￣ＣＡ￣Ｔ）￣Ｃ、（Ａ￣ＴＡ￣ＣＡ￣Ｔ）￣ＣＡ（Ａ￣ＴＡ￣ＣＡ￣Ｔ）￣Ｃ、（Ａ￣（ＴＣ）ＡＡ￣Ｔ）￣Ｃ、（Ａ￣ＴＡＡ￣（ＴＣ））￣Ｃ、Ａ￣Ｔ．     

γ—氨基丁酸对家鸽（Columba livia）顶盖脑片Ⅲ层神经？…

在２５只家鸽的离体顶盖脑片上，用玻璃微电极胞外记录到顶盖Ⅲ层神经元自发放电单位５５个，观察了γ－氨基丁酸９ｇａｍｍａ－ａｍｉｎｏｂｕｔｙｒｉｃ，ＧＡＢＡ）及其拮抗剂以及电刺激Ⅲα￣ｆ亚层对Ⅲ岐神经元电活动的作用。作用显示：脑片灌流ＧＡＢＡ（１０＾－６ｍｏｌ／Ｌ，３ｍｉｎ）后，１６／２１个单位（占７６．２％）放电频率减少，１／２１个单位（占４．８％）放电频率增加，４／２１个单位（占１９．６％）放电频     

伏翼DNA指纹谱探针的筛选

以人工合成的向卫星序列（ＧＴＧ）５、（ＧＴ）８、（ＣＡＣ）５和人源上卫星３３．１５做引物,首次随机扩增了伏翼的基因组ＤＮＡ,从多态性ＤＮＡ片段回收８条特异性片段,即（ＧＴＧ）５ａ、（ＧＴＧ）５ｂ、（ＧＴ）８ａ、（ＧＴ）８ｂ、（ＣＡ）５ａ、（ＣＡＣ）５ｂ、３３．１５ａ和３３．１５ｂ。与被标记过的基础组ＤＮＡ做探针斑点杂交结果表明,８个片段中（ＧＴＧ）５ａ、（ＣＡＣ）５ａ和３３．１５ａ产生了阳性信号,     

Y1—xGdxBa2Cu3O7—δ超导体的磁场烧结致各向异性

在磁场下（Ｈ＝１．３Ｔ）烧结得到的Ｙ１－ｘＧｄｘＢａ２Ｃｕ３Ｏ７－δ）（ｘ＝０～１．０）系超导体表现出明显的电阻率ρ超导转变零电阻温度Ｔｃｆ和临界电流Ｊｃ各向异性，样品的常态电阻率在平行于烧结磁场方向上的值ρ比垂直于烧结磁场方向上的值ρ大８％～７０％，零电阻温度Ｔｃｆ∥比Ｔｃｆ┴大１．０～５．０临界电流Ｊｃ比Ｊｃ大９％～７３％，而且在外磁场（Ｈｔ＝２．０Ｔ）下测得的临界电流Ｊｃ随外扬Ｈｔ与烧结磁场     

家兔高脂血症模型的建立及其在灵芝药理研究中之应用

作者采用脂肪乳剂对家兔连续灌胃２ｗ，分析比较了灌胃前后血清甘油三酯（ＴＧ）、总胆固醇（ＴＣ）、载脂蛋自Ｂ（ＡｐｏＢ）之变化和血浆血栓素（ＴＸ２）和前列腺素１６─Ｋｅｔｏ─ＰＧＦ１α之变化。结果发现：ＴＣ、ＴＧ、ＡｐｏＢ、ＴＸＢ２均明显上升，有极显著性差异（Ｐ＜０．０１）；６－Ｋｅｔ－ＰＧＦ１α明显下降，具有极显著性差异（Ｐ＜０．０１）。其中，Ｔｃ含量较灌胃前增力１５．４倍，ＴＧ较灌胃前增加３．３涪，完全符合食饮性动物高脂血症模型的特点。作者采用上述模型观察了灵芝对其ＴＣ、ＴＧ、ＡｐｏＢ、ＴＸＢ２、ｄ－Ｋｅｔｏ－ＰＧＦ１α之影响。结果发现：用灵芝制剂对高脂血症家兔行灌胃治疗，ＴＣ下降率为３．１１８％±２．８９％，ＴＧ下降卒为６２．９９±１２．１８，与对照组有显著差异（Ｐ＜０．０５）。ＡｐｏＢ有一定程度降低。     

多克隆抗体治疗移植肾难治性排斥反应

为了解多克隆抗体（ＡＴＧ）治疗移植肾难治性排斥反应的结果，对２９例移植肾难治性排斥反应应用ＡＴＧ治疗。结果２４例急性排斥反应逆转，逆转率为８２７％。说明ＡＴＧ治疗难治性排斥反应效果显著，巨细胞病毒感染及过敏反应是ＡＴＧ治疗的主要副作用。     

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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