Ca^2＋对罗非鱼EOG影响及其解毒可行性探讨

将四种浓度的Ｃａ２＋溶液和含４ｍｍｏｌ／Ｌ简Ｃａ２＋的不同浓度的Ｃｕ２＋、Ｚｎ２＋及其混合液，分别灌注鱼的嗅囊，研究它们对罗非鱼嗅电图（下简ＥＯＧ）的影响，并初步探讨Ｃａ２＋作为解毒剂的可行性及机制．结果表明：１）在一定浓度Ｃａ２＋范围内，ＥＯＧ振幅随Ｃａ２＋浓度的增加而增大，超此范围，则随浓度的增加而减小；２）Ｃａ２＋能使Ｃｕ２＋、Ｚｎ２＋中毒鱼的ＥＯＧ反应振幅接近正常值，反映其具一定解毒作用，效果顺序为Ｃｕ２＋＞Ｚｎ２＋；３）Ｃａ２＋对Ｃｕ２＋、Ｚｎ２＋混合液也具一定解毒作用．     

非晶硅磷掺杂效率分析的新方法

介绍一种分析ａ－Ｓｉ掺杂效率的新方法。该法能够很好地解决ａ－Ｓｉ全掺杂范围内掺杂浓度和掺杂效率的计算问题，简便易行，为ａ－Ｓｉ掺杂性能研究和器件设计制造提供可靠的掺杂浓度和掺杂效率值。     

弱电解质电离度和浓度之间关系的理论探讨

应用ＰｉｔｚｅｒＫＳ的电解质溶液理论，建立了弱电解质电离度ａ和浓度ｍ（ｍ＜６Ｍ）之间的函数关系，扩大了ａ的应用范围，得出了有关结论。     

小鼠卵孤雌激活及激活过程中细胞内游离Ca^2＋的变化

小鼠ＭⅡ期卵母细胞经８％乙醇或电刺激后在体外可孤雌发育至囊胚。利用Ｃａ２＋荧光探针ｆｕｒａ－２测定人工激活小鼠卵过程中胞内游离Ｃａ２＋浓度的动态变化结果表明，乙醇和电刺激激活卵时均诱导胞质游离Ｃａ２＋浓度较大幅度升高；而未被激活的卵胞质Ｃａ２＋浓度维持稳定。表明胞质游离Ｃａ２＋浓度升高可能是卵激活的启动信号。在无Ｃａ２＋或用ＥＧＴＡ螯合细胞外Ｃａ２＋的条件下电刺激不能诱导卵内游离Ｃａ２＋升高，而乙醇却仍可引起卵内游离Ｃａ２＋较小幅度升高。这表明，电刺激必导的卵内游离Ｃａ２＋升高主要来源于细胞外Ｃａ２＋内流。乙醇则可诱发细胞内钙库Ｃａ２＋释放。     

钙调抑制剂对Ce—ratocystis ulmi两种形态的影响

不同浓度的Ｃａ＾２＋调抑制剂和Ｃａ＾２＋调抑制剂作用时间长短的不同，对Ｃ．ｕｌｍｉ生长过程中两种形态的影响。结果表明：Ｃａ＾２＋调抑制剂可使Ｃ．ｕｌｍｉ由多细胞形态转变成单细胞形态，随着抑制剂浓度的升高和抑制作用时间的增长，这种转变程度也增大，反之则小，这进一步说明了Ｃａ＾２＋在Ｃ．ｕｌｍｉ由多细胞形态转变为单细胞形态时，具有明显的调节作用。     

从Ca（Ⅲ）,Zn（Ⅱ）,Cu（Ⅱ）和Fe（Ⅲ）的盐酸溶液中分离Ga（Ⅲ）的方法…

研究了在不同浓度的盐酸溶液中异丙醚对Ｇａ（Ⅲ），Ｚｎ（Ⅱ），Ｃｕ（Ⅱ）和Ｆｅ（Ⅲ）的萃取效率及加入不同浓度的Ｚｎ（Ⅱ）和Ｃｕ（Ⅱ）对异丙醚萃取Ｇａ（Ⅲ）的影响及Ｇａ（Ⅲ）的平均回收率，Ｇａ（Ⅲ）的平均化学产额为９７．４％。在１ｍＬ的枸橼酸镓注射中杂质元素Ｚｎ，Ｃｕ，Ｆｅ和Ｔｉ的含量分别为：０．６μｇ，０．６５μｇ，０．４０μｇ和０．７４μｇ。     

从Ga（Ⅲ），Zn（Ⅱ），Cu（Ⅱ）和Fe（Ⅲ）的盐酸溶液中分离Ga（Ⅲ）的方法研究

研究了在不同浓度的盐酸溶液中异而醚对Ｇａ（Ⅲ），Ｚｎ（Ⅱ），Ｃｕ（Ⅱ）和Ｆｅ（Ⅲ）的萃取效率及加入不同浓度的Ｚｎ（Ⅱ）和Ｃｕ（Ⅱ）对异丙醚萃取Ｇａ（Ⅲ）的影响及Ｇａ（Ⅲ）的平均回收率。Ｃａ（Ⅲ）的平均化学产额为９７．４％。在１ｍＬ的枸橼酸镓注射液中杂质元素Ｚｎ，Ｃｕ，Ｆｅ和Ｔｉ的含量分别为：０．６４μｇ，０．６５μｇ，０．４０μｇ和０．７４μｇ。     

番茄碱对人红细胞膜Ca~（2＋）－Mg~（2＋）ATPase活性影响的初步研究

本文研究了番茄碱（ｔｏｍａｔｉｎｅ）对人红细胞膜Ｃａ~２＋－Ｍｇ~２＋ＡＴＰａｓｅ活性的影响。实验结果表明，反应体系中ｔｏｍａｔｉｎｅ的浓度低于１ｍｍｏｌ／Ｌ时，对不依赖钙调蛋白（ＣａＭ）激活的Ｃａ~２＋－Ｍｇ２＋ＡＴＰａｓｅ（称之基本活性）影响不大，浓度达１ｍｍｏｌ／Ｌ时，该酶活性仍保持在９６％左右；而在此浓度范围内，ｔｏｍａｔｉｎｅ对依赖于ＣａＭ激活的Ｃａ~２＋Ｍｇ~２＋ＡＴＰａｓｅｅ有明显的抑制作用；其ＩＣ５０值为０．１４ｍｍｏｌ／Ｌ     

番茄碱对人细胞膜Ca^2＋—Mg^2＋ATPase活性影响的初步研究

本研究了番茄碱对人红细胞膜Ｃａ＾２＋－Ｍｇ＾２＋ＡＴＰａｓｅ活性的影响。实验结果表明，反应体系中ｔｏｍａｔｉｎｅ的浓度低于ｌｍｍｏｌ／Ｌ时，对不依赖钙调蛋白激活的Ｃａ＾２＋－Ｍｇ＾２＋ＡＴＰａｓｅ影响不大，浓度达ｌｍｍｏｌ／Ｌ时，该酶活性仍保持在９６％左右；而在此浓度范围内，ｔｏｍａｔｉｎｅ对依赖于ＣａＭ激活的Ｃａ＾２＋Ｍｇ＾２＋ＡＴＰａｓｅｅ有明显的抑制作用；其ＩＣ５０值为０．１４ｍｍｏｌ／Ｌ     

钙,锌对玉米幼苗吸收镉,铅的影响

本试验以玉米幼苗为材料，研究了在溶液培养条件下，Ｃａ．Ｚｎ对玉米幼苗吸收Ｃｄ、Ｐｂ的影响及其特点。当在０～５０ｍｇ／Ｌ及０～３０ｍｇ／Ｌ范围内逐步增大Ｃｄ和Ｐｂ的浓度时，玉米幼苗对Ｃｄ、Ｐｂ的啄收随之增大。向上述体系中加入Ｃａ或Ｚｎ后，玉米幼苗对Ｃｄ、Ｐｂ的吸收减弱，其中Ｃａ的作用更为明显。从结果还可以看出，Ｃａ和Ｚｎ对玉米幼苗Ｃｄ、Ｐｂ的吸收和运输的抑制作用，并不随着Ｃｄ、Ｐｂ浓度在一定范围内的增大而减弱。     

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     

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

正~~     

Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has