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A novel and facile one-pot sulfonyloxylactonization of alkenoic acids

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Chinese Chemical Letters 2009年第12期20卷 1427-1430页

作者： min Zhu li li Cai Qin liu College of Biological and Environmental Sciences Zhejiang Shuren University Hangzhou 310015 China

The novel and facile one-pot method for sulfonyloxylactonization of alkenoic acids was reported： when （diacetoxyiodo）- benzene, various 4-pentenoic acids or 5-hexenoic acid and sulfonic acids were mixed in CH2Cl2 at room temperature, sulfonyloxylactons were obtained in good to excellent yields in short times, some had two diastereoisomers.

关键词： Sulfonyloxylactonization (Diacetoxyiodo)benzene Alkenoic acid Synthesis

Effect of Black Plate on Corrosion Resistance of T5 Tinplate

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Journal of Iron and Steel Research International 2006年第2期13卷 59-64页

作者： HUANG Xing-qiao li Ning JIANG li-min li De-yu Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 Heilongjiang China

The effect of black plate on corrosion resistance of T5 tinplate was studied by glow discharge spectrograph, X-ray diffractometer （XRD）, stress tester, roughness tester and metallographic microscope. The result shows that black plate influences corrosion resistance of T5 tinplate intensely. It also indicates that the increase of content of manganese, phosphorus, silicon and aluminum in black plate would reduce the corrosion resistance of T5 tinplate and the increase of degree of crystal orientation on （200） crystal face, ｜X-Y｜ value （internal stress difference within two orientation）, roughness and exposure degree of iron grain after the same acid wash of black plate would enhance the corrosion resistance of T5 tinplate and the grain number of black plate has small effect on corrosion resistance of T5 tinplate.

关键词： T5 tinplate black plate component crystal orientation internal stress corrosion resistance

Effect of arc sprayed coatings on tensile properties of a type 316 steel

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 95-99页

作者： liU Gui-min MA li-li K.J.Kurzydlowski Faculty of Materials Science and Engineering Academy of Armored Force EngineeringBeijing 100072 China Faculty of Materials Science and Engineering Academy of Armored Force EngineeringBeijing 100072 China Faculty of Materials Science and Engineering Warsaw University of Technology Warsaw Poland

The effect of Al- and AlSiRE-coatings obtained by arc spray (AS) and high velocity arc spray (HVAS) technologies, on the tensile properties of type 316 steel specimens strained at elevated temperatures in air and vacuum has been systematically investigated. It is found that both temperature and environment play an important role in determining the mechanical properties of the coated 316 steel specimens strained at elevated temperatures. And the quantitative changes of surface roughness of coatings before and after straining correspond to the mechanical properties of the 316 steel substrate.

关键词： type 316 steel arc spray high velocity arc spray coating tensile property

An effective method for the preparation of chlorolactones

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Chinese Chemical Letters 2011年第4期22卷 431-434页

作者： min Zhu li li Jiang Ying Tong Hui Zhang College of Biological and Environmental Sciences Zhejiang Shuren University Hangzhou 310015 China

The effective chlorolactonization of alkenoic acids with（diacetoxyiodo）benzene and lithium chloride under mild conditions have been *** show that various 4-pentenoic acids react with（diacetoxyiodo）benzene and lithium chloride fluently in CH_3OH at room temperature,obtaining five-membered chlorolactones in good yields in short *** alkenoic acids,such as 3-butenoic acid and trans 3-hexenoic acid give some more complicated results,and 4-pentynoic acid provides a chloroenol lactone with Z configuration in 40%of yield.

关键词： Chlorolactone (Diacetoxyiodo)benzene Alkenoic acid Preparation

Study on the influence of humic acid of different molecular weight on basic ion exchange resin's adsorption capacity

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Chinese Chemical Letters 2009年第12期20卷 1478-1482页

作者： Jin Nan Wang Ai min li Yang Zhou li Xu State Key Laboratory of Pollution Control and Resource Reuse & School of the Environment Nanjing University Nanjing 210093 China

In this paper, humic acid （HA） was ultra-filtered into different molecular weight sections and was characterized by multielement analysis, UV254/TOC, FT-IR and three-dimensional fluorescence spectrometric. Since humic acids of different molecular weights have different hydrophilic and molecular size, the maximum adsorption capacity of basic ion exchange resins appears on the humic acid whose molecular weight ranges from 6000 to 10,000 Da.

关键词： Humic acid Molecular weight Basic ion exchange resin Adsorption

Effects on the local symptoms of subgenomic RNAs expressions and their translational products of Tobacco necrosis virus A Chinese isolate

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Chinese Science Bulletin 2008年第11期53卷 1682-1690页

作者： li Jiang li min li Cui GAO Yang li DaWei HAN ChengGui YU Jialin State Key Laboratory of Agro-Biotechnology China Agricultural University Beijing 100094 China

Based on a full-length infectious cDNA clone, gene modifications of Tobacco necrosis virus A Chinese isolate (TNV-AC) were made by site-directed mutagenesis or nucleotide deletions for in vitro transcrip-tion of mutant viral RNAs. Mechanical inoculations of Chenopodium amaranticolor with in vitro tran-scripts, containing a single nucleic acid substitution at the presumed transcriptional start sites for the two subgenomic (sg) RNAs, showed that the sgRNA1 and sgRNA2 of TNV-AC were initiated at G2184 or G2460, respectively. Mutagenesis of the translational initiation-codons for the open-reading frame (ORF) P8 or P6 encoded by sgRNA1 indicated that each of the two genes was essential for formation of local lesions on C. amaranticolor leaves, perhaps by blocking virus cell-to-cell movement, but were not necessary for viral RNA replication in the protoplast of tobacco cell BY-2. Results of prokaryotic expression showed that the ORF coding for coat protein on TNV-AC sgRNA2 was initiatively translated by the first AUG codon at nucleotides 2612―2614. Site-directed mutation of translational start codons, and deletion of the entire coding region, showed that the intact TNV-AC coat protein was dispensable for establishment of TNV-AC infection in C. amaranticolor, otherwise the numbers of local lesions and the viral RNA accumulation level were reduced, or the time to symptom appearance significantly delayed. These results suggested that the nucleotide sequence around the translational start codon coding for TNV-AC coat protein gene may play an important role in the local symptoms. Aspects of the involve-ment of the coat protein in the TNV-AC life cycle were discussed.

关键词：烟草坏死病毒A RNAs 染色体基因表达

Caspase-1 inhibition alleviates acute renal injury in rats with severe acute pancreatitis

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World Journal of Gastroenterology 2014年第30期20卷 10457-10463页

作者： Xiao-Hua Zhang min-li li Bin Wang Mei-Xia Guo Ren-min Zhu Department of Gastroenterology Jinling Hospital

AIM: To assess the effect of inhibition of caspase-1 on acute renal injury in rats with severe acute pancreatitis (SAP).

关键词： Severe acute pancreatitis Caspase-1 Interleukin-1 beta Interleukin-18 Acute renal injury

Modified Heisenberg Ferromagnet Model and Integrable Equation

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Communications in Theoretical Physics 2005年第3X期44卷 415-418页

作者： ZHAO Wei-Zhong li min-li QI Yu-Hai WU Ke Department of Mathematics Capital Normal University Beijing 100037 China Department of Mathematics of minority Normal College Qinghai Normal University Xining 810008 China Key Laboratory of Mathematics Mechanization Academy of Mathematics and System Sciences the Chinese Academia of Sciences Beijing 100080 China

We investigate some integrable modified Heisenberg ferromagnet models by using the prolongation structure theory. Through associating them with the motion of curve in minkowski space, the corresponding coupled integra... 详细信息

关键词： Heisenberg ferromagnet model integrable equation prolongation structure space curve

Optimization of a robust collaborative-relay beamforming design for simultaneous wireless information and power transfer

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Frontiers of Information Technology & Electronic Engineering 2018年第11期19卷 1432-1443页

作者： Lu-lu ZHAO Xing-long JIANG li-min li Guo-qiang ZENG Hui-jie liU Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 200050China Shanghai Engineering Center for Microsatellites Shanghai 201210China College of Mathematics Physics and Electronic Information EngineeringWenzhou UniversityWenzhou 325035China

We investigate a collaborative-relay beamforming design for simultaneous wireless information and power transfer. A non-robust beamforming design that assumes availability of perfect channel state information(CSI) in the relay nodes is addressed. In practical scenarios, CSI errors are usually inevitable; therefore, a robust collaborativerelay beamforming design is proposed. By applying the bisection method and the semidefinite relaxation(SDR)technique, the non-convex optimization problems of both non-robust and robust beamforming designs can be ***, the solution returned by the SDR technique may not always be rank-one; thus, an iterative sub-gradient method is presented to acquire the rank-one solution. Simulation results show that under an imperfect CSI case, the proposed robust beamforming design can obtain a better performance than the non-robust one.

关键词： Simultaneous wireless information and power transfer Channel state information Robust beamforming Semidefinite relaxation Iterative sub-gradient