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The prediction of the peak width at half height in HPLC

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Chinese Journal of Chemistry 1991年第3期9卷 237-244页

作者： ZOU,Han-Fa ZHANG,Yu-Kui LU,Pei-Chang dalian Chromatographic R.& D.Center of China dalian institute of chemical physics,academia sinica,dalian 116011 dalian Chromatographic R. & D. Center of China dalian institute of chemical physics Academia Sinica Dalian 116011

The prediction of the peak width at half height is an important aspect in the optimization of the chromatographic operating *** this paper,a linear relationship,between the peak widths at half height and the retention values with various isocratic elution is *** gradient elution,however,the relationship between the peak widths at half height and the so-called invented retention values that correspond to the mobile phase composition by eluting the solute from the column end is *** believe that there is almost the same band width at half height inside the column (in unit of length)for different *** peak width at half height in the chromatogram(in unit of time)is mainly determined by the capacity factor of the solute when it is eluted front the column *** larger the capacity factor of a solute eluted from the column end,the more slowly will be the solute eluted from the column end and the wider will be the peak width at half *** is possible to predict the peak width at half height in various isocratic and gradient elutions by using this linear relationship.

关键词： The prediction of the peak width at half height in HPLC

液相色谱专家系统中柱系统推荐规则的建立和验证

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分析测试通报 1992年第1期11卷 7-12页

作者：张玉奎邹汉法梁鑫淼卢佩章中国科学院大连化学物理研究所国家色谱分析研究中心

把分子结构和分子、离子静电作用力作为影响溶质保留值和选择性的基本点,提出了液相色谱专家系统柱系统推荐的基本规则,由此可以从溶质所包含的基团或官能团的信息进行色谱柱系统推荐。为了验证这些规则的正确性,应用几类常用的或典型... 详细信息

把分子结构和分子、离子静电作用力作为影响溶质保留值和选择性的基本点,提出了液相色谱专家系统柱系统推荐的基本规则,由此可以从溶质所包含的基团或官能团的信息进行色谱柱系统推荐。为了验证这些规则的正确性,应用几类常用的或典型的样品从分子结构通道进行液相色谱柱系统推荐,获得满意的结果。

关键词：液相色谱专家系统柱系统

A NOVEL REDUCTIVE TETRAALLYLATION OF PYRIDINE

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Chinese chemical Letters 1995年第10期6卷 833-834页

作者： Xian Mou ZENG Jia Qiang CAI and Yi Jian GU(dalian institute of chemical physics, academia sinica 161 Zhongshan Rcad dalian 116012) Acad sinica Dalian Inst Chem Phys Dalian 116012 Peoples R China

Pyridine and 4-picoline undergo reductive tetraallylation with allyl bromide and zinc dust in THF at room temperature to afford regio-selectively 1,2,3,6-tetraallyl-1,2,3,6-tetrahydropyridine and 1,2,3,6-tetraallyl-1,...

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Thermochemistry study on H2O/NaY zeolite adsorption system

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Chinese Journal of Chemistry 1988年第1期6卷 7-13页

作者： ZHOU Li-Xing CHEN Shu-Xia ZHENG Lu-Bin dalian institute of chemical physics,academia sinica,dalian dalian institute of chemical physics Academia Sinica Dalian

By using an automatic adiabatic calorimeter the heat capacity measurements in the tem-perature range of 220—320K for HO/NaY zeolite adsorption system with various amounts of adsorbedwater have been *** c-T curves obtained,there is no peak for solid-liquid phase transitionof the adsorbed *** for HO-NaY zeolite system which consists of a saturated HO/NaYadsorption system mixed mechanically with a certain amount of water,there are distinct peaks intheir *** peak in the c-Tcurve disappeared as soon as the mixed water in the lattersystem was *** facts mentioned above have been discussed from the point of view ofthe structure of the adsorbed layer and the pore size of zeolite.

关键词： NaY Thermochemistry study on H2O/NaY zeolite adsorption system

ELECTRONEGATIVITY TOPOLOGICAL INDEX AND ITS APPLICATION IN CORRELATION WITH MX,MX_2,MX_3,MX_4 MOLECULAR PROPERTIES

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Chinese chemical Letters 1991年第1期2卷 89-90页

作者： Yong DING Shihua WANG dalian institute of chemical physics,academia sinica,dalian,116012

A New electronegativity topological index is defined and used to correlate with properties of MX,MX_2,MX_3,MX_4.

关键词： MX ELECTRONEGATIVITY TOPOLOGICAL INDEX AND ITS APPLICATION IN CORRELATION WITH MX,MX2,MX3,MX4 MOLECULAR PROPERTIES ITS

Analysis of Caenorhabditis elegans in microfluidic devices

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Science China Chemistry 2012年第4期55卷 484-493页

作者： WEN Hui & QIN JianHua dalian institute of chemical physics, Chinese Academy of Sciences, dalian 116023, China dalian institute of chemical physics Chinese Academy of Sciences Dalian China

Caenorhabditis elegans (C. elegans) is widely adopted as a model organism for a variety of biological studies including development, genetics and neurobiology. Micro-scale microfluidic technology is capable of handling single or populations of C. elegans in high throughput format and allows for the precise spatial and temporal control of their environment, which is well suited for the study of worms in different aspects. In this review, we highlight the recent advances in microfluidic technology for the analysis of worms ranging from behavioral studies to neurobiology. We believe that microfluidic device can further be applied to study the different aspects of worms, extending from fundamental investigation of behavioral dynamics to more complicated biological processes including neurochemistry and learning behaviors.

关键词： microfluidic – Caenorhabditis elegans – behavior – neurobiology – aging

Interaction between Metal in Metallo Enzyme and Small Biological Molecules

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Chinese Journal of Structural Chemistry 1996年第1期15卷 24-30页

作者： Hu Jie-Han Shu Zan-Yong Tao Li-Mei Cheng Guo-Bao(dalian institute of chemical physics, academia sinica, dalian 116023) dalian institute of chemical physics Academia Sinica Dalian 116023

In this work, the existence of interaction between metal in metallo enzyme and small biological molecules such as amino acid in aqueous solution is confirmed for the first time by the experimental data of ESR, NMR,UV-... 详细信息

关键词： biological molecules metallo enzyme interaction

Study on Synthesis of Heterocycle-Fused Troponoid Compounds

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Chinese chemical Letters 2000年第6期11卷 503-504页

作者： Wen Tao GAO Zhuo ZHENG(dalian institute of chemical physics, Chinese Academy of Science, dalian 116023) dalian institute of chemical physics Chinese Academy of Science Dalian 116023 China

3-Acetyltropolone 1 reacted with 3,4,5-trimethoxybenzaldehyde et al. to afford 2 similar to 5. 2-Acetyl-7-methylaminotropone 7 reacted with 3, 1,5-trimethoxybenzaldehyde el al, to gave 8 similar to 10. Compound 1 reacted with 3,4,5-trimethoxybenzaldehyde in the presence of ethyl orthoformate and perchloric acid to afford 6. Compounds 3,5 reacted with hydroxylamine to give 11, 12. The reactions of 3,5 with phenylhydrazine gave 13, 14.

关键词： 3-acetyltropolone 2-acetyl-7-methylaminotropone heterocycle-fused troponoid

Catalytic synthesis of lithium hydride under mild conditions

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Chinese Journal of Chemistry 1985年第3期3卷 201-209页

作者： LIAO Shih-Tsien KONG Wei LIU He-Zhong LI Jing-Kui XU Yun dalian institute of chemical physics,academia sinica,dalian dalian institute of chemical physics Academia Sinica Dalian

A catalyst composed of titanium tetrachloride and naphthalene or its methyl derivativeswith very high activity was found for the synthesis of *** lithium can be quantitatively hydrogenated to lithium hydride at 25-50℃ under at-mospheric pressure within 2-5 h according to various catalyst *** catalyst stabilitywas investigated and the relationship between catalyst compositions and reaction controlling stepwas established also.

关键词： Catalytic synthesis of lithium hydride under mild conditions THF