HPLC法测定康希力中氨苄及邻氯青霉素

采用高效液相色谱法（ＨＰＬＣ）对复方康希力胶囊中氨苄青霉素和邻氯青霉素进行测定。以醋酸盐缓冲液（ｐＨ＝４．５）－甲醇（５５：４５）为流动相，流速为１．０ｍＬ／ｍｉｎ；ＹＷＧ－Ｃ＿（１８）（１０μｍ）为固定相；乙酰苯胺为内标；检测波长为２５４ｎｍ。氨苄青霉素、内标物和邻氯青霉素的保留时间分别为３，０、５．５和９．０ｍｉｎ。氨苄青霉素和邻氯青霉素的回收率（ｎ＝５）分别为１００．３％（ＲＳＤ＝０．３７％）和１００．９％（ＲＳＤ＝０．４３％）。两种组分的最低检出浓度为５μｇ／ｍＬ。     

蛋白质沉淀－光度法测定橡子淀粉中单宁的含量

本文报道了用蛋白质沉淀—光度法测定橡子淀粉中单宁的含量，单宁在０～５０μｇ·ｍＬ￣（－１）范围内与吸光度值呈良好的线性关系（ｒ＝０．９９９５）；实验结果，其回收率为９８．１６％～１００．６６％，变异系数小于０．１７％（ｎ＝９）．与经典方法（目视比色法）相比．具有快速、简便、精确、样品用量少的特点，易于推广．     

盐酸米诺环素胶囊溶出度测定方法的改进

关于盐酸米诺环素胶囊溶出度测定方法和标准修订．采用紫外法,以水为溶剂,检测波长为（３４６±２）ｎｍ,在５～３０μｇ／ｍＬ浓度范围内有良好线性关系（ｒ＝０．９９９９）．平均回收率为（１００．６±０．５８）％,测定浓度为１５μｇ／ｍＬ．在此条件下可得准确的结果．     

耐尔蓝荧光探针法测定核酸

基于ＤＮＡ或ＲＮＡ对耐尔蓝荧光的猝灭效应, 建立一种新的ＤＮＡ 或ＲＮＡ 的测定方法． 在最优条件下, 测定小牛胸腺ＤＮＡ、鲑鱼精子ＤＮＡ、鲱鱼精子ＤＮＡ 和酵母ＲＮＡ 的线性范围分别为： ３－０ ～２－０ ×１０３ｎｇ／ｍＬ、９－０ ～２－０ ×１０３ｎｇ／ｍＬ、５－４ ～５－０ ×１０３ｎｇ／ｍＬ 和２７ ～１０ ×１０３ｎｇ／ｍＬ．检测限分别是３－０ｎｇ／ｍＬ、９－０ｎｇ／ｍＬ、５－４ｎｇ／ｍＬ和２７ｎｇ／ｍＬ, 相对标准差（ｎ ＝ ６） 是２－１ ％ ． 本文还讨论了干扰物质的影响．     

荧光分光光度法测定人血清中西诺沙星的浓度

建立了荧光分光光度法测定血清中西诺沙星浓度的方法． 用乙腈沉淀蛋白对血清进行预处理, 在硼酸盐缓冲溶液（ｐＨ＝ ９－０） 中, 血清中西诺沙星线性测定范围为０－１ ～１０－０μｇ／ｍ Ｌ（ｒ ＝０－９９６１） , 人血清中西诺沙星的平均回收率为９７－５ ％ ． 日内变异系数为３－０ ％ （ ｎ ＝ ５） , 日间变异系数为３－４ ％ （ ｎ＝ ６） ． 本法适于西诺沙星血药浓度的测定．     

异烟肼-次氯酸钠-鲁米诺化学发光反应的研究

利用异烟肼可增强次氯酸钠－鲁米诺体系的化学发光,结合流动注射技术,建立了一种新的异烟肼的流动注射化学发光分析方法．异烟肼在８．０×１０－６～１．０×１０－８ｇ／ｍＬ浓度范围内与化学发光信号强度呈线性关系．检出限为１．７×１０－９ｇ／ｍＬ．ＲＳＤ为１．９％（ｎ＝１１,ｃｓ＝５×１０－７ｇ／ｍＬ）．     

反相高效液相色谱法测定3H状元胶囊中的1α—羟基维生素D3

使用反外ＨＰＬＣ法测定３Ｈ状元胶囊中的１α－羟基维生素Ｄ３，固定相为Ｃ１８，流动相为乙腈：水（９７：３），测定波长为２６５ｎｍ标样线性范围为０．１～１．０μｇ／ｍＬ（ｒ＝０．９９８８，ｎ＝５）最低检出率为０．５ｎｇ，天内天间精密度分别为１．４１％（ｎ＝１０）和２．７２％（ｎ＝３）平均回收率为９９．１％（ＲＳＤ＝２．７８％），该方法用于测定３Ｈ求元胶囊的１α－羟基维生素Ｄ３，取得较满意的结果。     

烧伤新软膏质量标准研究

为了有效地控制烧伤新软膏的质量，采用薄层色谱法对其中虎杖、黄连、白芷进行鉴别，并用薄层扫描法测定其中大黄素的含量，加样回收率为１００．８６％，ＲＳＤ＝１．６％（ｎ＝６）．应用紫外分光光度法测定其中小檗碱含量，加样回收率为９８．３９％、ＲＳＤ＝０．５６％（ｎ＝６）．     

K_(0.5)(NH_4)_(5.5)[MnMo_9O_(32)]6H_2O的合成及其晶体结构

由ＫＭｎＯ４和（ＮＨ４）６Ｍｏ７Ｏ２４４Ｈ２Ｏ合成了标题化合物Ｋ０．５（ＮＨ４）５．５［ＭｎＭｏ９Ｏ３２］６Ｈ２Ｏ，用ｘ－射线测定了晶体结构．该化合物的晶体属三方晶系，空间群Ｒ３２；ａ＝１５．８４６（４），Ｃ＝１２．３９６（３），Ｍｒ＝１６５７．２８，Ｖ＝２６９５．６３，Ｚ＝３，Ｄｃ＝３．８２ｇ／ｃｍ３，μ＝４１．５ｃｍ－１，Ｆ（０００）＝２９６７．对３０２４个可观测衍射［Ｆ０≥３σ（Ｆ０）］最终偏离因子Ｒ＝０．０３７，Ｒｗ＝０．０４３．结构测定表明：Ｍｎ（Ⅳ）与６个氧配位形成键长相同的ＭｎＯ６八面体，它位于［ＭｎＭｏ９Ｏ３２］６－阴离子的中心，而Ｍｏ（Ⅵ）均与氧原子六配位，形成９个畸变的ＭｏＯ６八面体．     

电位溶出分析法同时测定罐头食品中痕量铅锡

利用不除氧电位溶出分析法成功地测定了溶出电位相近的Ｐｂ、Ｓｎ两元素。以０．０５ｍｏｌ／Ｌ草酸为介质，调节溶液ＰＨ＝１．０，以溶解氧做氧化剂，静止溶出，两元素均有分高清晰的平台出现。Ｐｂ、Ｓｎ的线性范围分别为：２．０×１０－９～２．０×１０－７ｍｏｌ／Ｌ和２．０×１０－８～２．０×１０－６ｍｏｌ／Ｌ。当富集时间为４ｍｉｎ时，Ｐｂ、Ｓｎ的检测限分别为５．０×１０－１０ｍｏｌ／Ｌ和５．０×１０－９ｍｏｌ／Ｌ。此法已成功地应用于测定罐头食品中的痕量Ｐｂ、Ｓｎ。     

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