得普利麻两种给药方法用于硬膜外麻醉时镇静的对…

目的：研究得普利麻在硬膜外麻醉时两种给药方法的血药浓度变化和临床效应。方法：将２８例连续硬膜我麻醉下行上腹部手术患分为两组。第１组采用常规给药法：诱导量１．５／（ｋｇ．ｍｉｎ），３ｍｉｎ后开始维持量３ｍｇ／（ｋｇ．ｈ）；第２组以０．１５ｍｇ／（ｋｇ．ｍｉｎ）速度共６ｍｉｎ诱导，随即用与第１组相同维持量。两组诱导时均辅以芬太尼０．１μｇ／ｋｇ。测定给药前及给药后１、３、６、１０、２０、３０ｍｉｎ血     

谷氨酸,褪黑素导致海马脑薄片诱发群体峰电位的 …

在大鼠海马脑薄片上电刺激海马Ｓｃｈａｆｆｅｒ侧支纤维，胞外记录ＣＡ１区锥体细胞层诱导群体峰电位（Ｐｏｐｕｌａｔｉｏｎ Ｓｐｉｋｅ，ＰＳ），观察灌流谷氨酸（Ｇｌｕ）和褪黑素（ＭＥＬ）４０ｍｉｎ，人工脑脊液冲洗３０ｍｉｎ对ＰＳ的影响，结果显示：不同浓度（１．０、１．２５、２．５和５．０ｍｍｏｌ／Ｌ）的Ｇｌｕ作用下，７０ｍｉｎ末ＰＳ值百分经分别为１５６０．５％、１５０．７％、１３．１％、４．１％；并且Ｇ     

1—苯基—3—甲基—4—（α—呋喃甲酰基）—5—吡唑酮与中性萃取剂协同萃取钇（Ⅲ）的研究

本文研究了１－苯基－３－甲基－４－（α－呋喃甲酰基）－５－吡唑酮（ＨＡ）单独萃取Ｙ（Ⅲ）及其与二苯亚砜（ＤＰＳＯ），磷酸三丁酯（ＴＢＰ）或三辛基氧膦（ＴＯＰＯ）协同萃取Ｙ（Ⅲ）的行为。确定了萃合物的组成分别为ＹＡ＿３，ＹＡ＿３·ＤＰＳＯ，ＹＡ＿３·ＴＢＰ和ＹＡ＿２（ＮＯ＿３）·２ＴＯＰＯ．算得萃取平衡常数分别为：ｌｏｇＫ＿（Ａ（ＨＡ））＝－６．８６，１ｏｇＫ＿（ＡＢ（ＨＡ＋ＤＰＳＯ））＝－３．８９，ｌｏｇＫ＿（ＡＢ（ＨＡ＋ＴＢＰ））＝－２．５３和ｌｏｇＫ＿（ＡＢ（ＨＡ＋ＴＯＰＯ））＝５．１３．     

巴西铁的茎组织培养

以巴西铁（Ｄｒａｃａｅｎａ　ｓａｎｄｅｒｉｅｎａ）茎段为接种材料，ＭＳ为基本培养基，吲哚乙酸（ＩＡＡ）、茶乙酸（ＮＡＡ），２，４－二氯苯氧乙酸（２．４－Ｄ）、６－苄氨基嘌呤（６－ＢＡ）、６一糠基氨基嘌呤（６－ＦＡ）、吲哚丁酸（ＩＢＡ）、生根粉（ＡＢＴ１）、玉米素（ＺＴ）为附加成分，进行诱导、分化、生根试验。诱导结果表明：ＩＡＡ不起作用，２，４－Ｄ有较好的促进作用，０．５ｍｇ／Ｌ（２，４－Ｄ）＋２ｍｇ／Ｌ（６－ＢＡ）组合，诱导率高达９０％。分化结果表明：ＮＡＡ、６－ＢＡ效果较好，６－ＦＡ作用不明显，ｌｍｇ／ＬＮＡＡ＋４ｍｓ／Ｌ（６－ＢＡ）＋２ｍｓ／ＬＺＴ组合，分化率最高．达８１．１％。生根结果表明：ＭＳ＋０．５ｍｇ／ＬＮＡＡ＋０．５ｍｇ／Ｌ（６－ＦＡ），ＭＳ＋０．４ｍｇ／ＬＮＡＡ＋２ｍｇ／ＬＩＢＡ，ＭＳ＋０．２ｍｇ／ＬＮＡＡ＋０．１ｍｇ／Ｌ（６－ＦＡ）＋ＡＢＴ１三种培养基均发根，生根率７０％以上，根粗，但有点脆，若培养基中加入活性碳产生的根则细而韧。     

甘蓝型油菜萝卜质不育系恢复材料Ad-6(F4)测交二代恢复株TCF2的快繁及生根

油菜萝卜胞质不育系恢复材料Ａｄ－６（Ｆ４）测交二代恢复株ＴＣＦ２,在ＭＳ附加５ｍ ｇ／Ｌ６－ＢＡ＋ ０．５ｍ ｇ／Ｌ ＮＡＡ,３ｍ ｇ／Ｌ ６－ＢＡ＋ ０．２ｍ ｇ／Ｌ ＮＡＡ,３ｍ ｇ／Ｌ ６－ＢＡ＋ ０．３ｍ ｇ／Ｌ ＮＡＡ＋６００ｍ ｇ／Ｌ水解乳蛋白以及５ｍ ｇ／Ｌ６－ＢＡ＋ ０．３ｍ ｇ／ＬＮＡＡ＋ ５ｍ ｇ／ＬＡｇＮＯ３ 的不同培养基上诱导丛生芽,结果表明５ｍ ｇ／Ｌ６－ＢＡ＋ ０．３ｍ ｇ／ＬＮＡＡ＋ ５ｍ ｇ／ＬＡｇＮＯ３ 对ＴＣＦ２ 诱导丛生芽有较好的效果．小芽生根培养基为１／２ＭＳ效果最好．     

生长调节物质对丹参叶片脱分化及根芽分化的效应

生长调节物质对丹参叶片脱分化及根芽分化效应的研究结果表明：（１）０．５～５．０ｍｇ／Ｌ２，４－Ｄ，０．１～０．５ｍｇ／ＬＮＡＡ０．５～１．５ｍｇ／ＬＩＢＡ或０．２～１．０ｍｇ／Ｌ４ＰＵ－３０诱导叶片的脱分化率高达９７％～１０００％。（２）０．１～０．５ｍｇ／ＬＮＡＡ或０．５～２．０ｍｇ／ＩＢＡ诱导芽化率为９３％～１００％，３种细胞分裂素中，４ＰＵ－３０对叶片芽化最有效，６－ＢＡ和ＫＴ次之。（３）随     

速冻蔬菜的最适烫漂时间与其过氧化物酶活性测定研究

本试验以各种蔬菜：菠菜、芹菜、花菜、芦笋、土豆、大头菜、蒜苗中的过氧化物酶活性为研究对象：在不同温度下进行烫漂处理后其ＰＯＤ活力具有再生现象，于是确定在９５°Ｃ下烫漂得到不同蔬菜的最佳烫漂时间分别为菠菜１ｍｉｎ，蒜苗２．５ｍｉｎ，芹菜３ｍｉｎ，芦笋４ｍｉｎ，青菜１．５ｍｉｎ，大头菜１．５ｍｉｎ，花菜２．５ｍｉｎ，土豆３ｍｉｎ；还进一步比较研究了添加柠檬酸、Ｎａ＿２ＣＯ＿３、ＣｕＳＯ＿４等化学药品对蔬菜烫漂处理中ＰＯＤ活性的影响，结果用适宜浓度的Ｎａ＿２ＣＯ＿３（１０￣（－５）Ｍ）或ＣｕＳＯ＿４（４．０×１０￣（－４）Ｍ）溶液烫漂处理具有护色和杀酶的协同效果。     

高效液相色谱法测定1－硝基蒽醌和1－氨基蒽醌

探讨了１－硝基蒽醌（１－ＮＯ＿２ＡＱ）和１－氨基蒽醌（１－ＮＨ＿２ＡＱ）同时测定和分别测定的色谱条件，提出了在Ｓｈｉｍ－ｐａｃｋＣＬＳＳ－ＳＩＬ色谱柱上，以正庚烷－１，４二氧六环－乙酸乙酯（６５：３５：５（Ｖ／Ｖ）为流动相，流量为１．５ｍｌ／ｍｉｎ，柱温４０℃，以分光光度检测器于２５４ｎｍ处检测时，４ｍｉｎ内使１－ＮＯ＿２ＡＱ与１－ＮＨ＿２ＡＱ分离；５ｍｉｎ使１－ＮＨ＿２ＡＱ与杂质分离；７ｍｉｎ可使１－ＮＯ＿２ＡＱ与杂质分离的高效液相色谱分析法。其绝对检出下限１－ＮＯ＿２ＡＱ为０．０１２μｇ，１－ＮＨ＿２ＡＱ为０．０２６μｇ，变异系数分别为１．１％和０．９６％，回收率分别为９９．７％和１００．２％。     

古巴芦荟的组织培养

试验结果表明：古巴芦荟（ＡｌｏｅｖｅｒａＬ．）对蔗糖浓度适应范围较大（２％～５％），其中以３％的浓度最适宜．在侧芽诱导中以ＭＳ基本培养基较合适．激素对侧芽的诱导作用符合细胞分裂素／生长素的器官发生调节模式，其中以ＭＳ＋ＢＡ３—５ｍｇ／Ｌ＋ＮＡＡ０．２ｍｇ／Ｌ对芽的诱导最有效，而ＫＣ＋ＩＢＡ２—３ｍｇ／Ｌ对根的诱导最佳，生根率达１００％．在生根培养阶段加入１－３ｍｇ／Ｌ的活性碳是必要的．试管苗移栽的最佳基质是河沙，成活率达９０．２％．     

化学需氧量COD_（Cr）测定条件改进的研究

本文提出以Ａｇ２ＳＯ４—Ａｌ２（ＳＯ４）３—ＭｇＳＯ４作催化剂，在Ｈ２ＳＯ４－Ｈ３ＰＯ４混酸溶液中快速测定废水ＣＯＤ的新方法．实验确定的最佳条件是：Ａｇ２ＳＯ４：Ａｌ２（ＳＯ４）３：ＭｇＳＯ４＝１∶１∶１（质量比），Ｈ２Ｏ４：Ｈ３ＰＯ４＝５∶１（体积比），回流时间０．５小时，通过对废水ＣＯＤ的测定，取得与标准法相近的结果．     

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

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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