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Chinese Journal of Structural Chemistry 2006年第6期25卷 740-746页

作者： WANG Ying BEI Feng-li yan lian-he School of Chemical Engineering Nanjing Universityof Science and Technology Nanjing 210094 China

The title compound has been prepared and characterized by elemental analysis, infrared spectra, NMR and thermal analyses, and its crystal structure was determined by X-ray diffraction method. The crystal crystallizes in the monoclinic system, space group C2/c with a = 2.3066（5）, b = 0.53320（ 11）, c = 2.3236（5） nm,β= 102.76（3）°, V = 2.7872（ 10） nm^3, Mr = 612.67, Z = 4, Dc = 1.460 g/cm^3, R = 0.0570 and wR = 0.1271. In the title compound, two 4-isoniazidylthioformyl units are bridged by S-S bond （0.2037（3） nm）. The Na ions are linked by O（4）, O（4A）, O（1） and O（1A） to form a one-dimensional hydration sodium coordination polymer. The Na ion is coordinated by a meridional arrangement of the six O atoms to assume a slightly distorted octahedron as a result of intermolecular hydrogen bonds. The thermal analytical data indicate that it decomposes completely at the temperature of 609.26 ℃.

关键词： crystal structure bridging isoniazide coordination polymer

3D Progressive Damage Based Macro-Mechanical FE Simulation of Machining Unidirectional FRP Composite

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Chinese Journal of Mechanical Engineering 2018年第3期31卷 128-143页

作者： yan-li he Joao-Paulo Davim Hong-Qian Xue Key Laboratory of Contemporary Design and Integrated Manufacturing Technology of Ministry of Education School of Mechanical EngineeringNorthwestern Polytechnical University Department of Mechanical Engineering University of AveiroCampus Santiago

Finite element(FE) simulation is a powerful tool for investigating the mechanism of machining fiber?reinforced polymer composite(FRP). However in existing FE machining simulation works,the two?dimensional(2 D) progressive damage models only describe material behavior in plane stress,while the three?dimensional(3 D) damage models always assume an instantaneous sti ness reduction pattern. So the chip formation mechanism of FRP under machin?ing is not fully analyzed in general stress state. A 3 D macro?mechanical based FE simulation model was developed for the machining of unidirectional glass fiber reinforced plastic. An energy based 3 D progressive damage model was proposed for damage evolution and continuous sti ness degradation. The damage model was implemented for the Hashin?type criterion and Maximum stress criterion. The influences of the failure criterion and fracture energy dissipa?tion on the simulation results were studied. The simulated chip shapes,cutting forces and sub?surface damages were verified by those obtained in the reference experiment. The simulation results also show consistency with previous 2 D FE models in the reference. The proposed research provides a model for simulating FRP material behavior and the machining process in 3 D stress state.

关键词： FRP Macro mechanical Machining Finite element Progressive damage

Successful isolation of helicobacter pylori after prolonged incubation from a patient with failed eradication therapy

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World Journal of Gastroenterology 2009年第12期15卷 1528-1529页

作者： yan Yin li-Hua he Jian-Zhong Zhang Department of Diagnosis National Institute for-Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing 102206 China

helicobacter pylori(H pylori),a gastric pathogen,is a major cause of chronic gastritis and peptic ulcer disease,and is an important risk factor for the development of gastric *** of the bacterium from gastric biopsy is essential for the determination of drug resistance of H ***,the isolation rates of H pylori from infected individuals vary from 23.5%to 97% due to a number of factors such as biopsy preparation,cultural environment,medium and the method *** the present case,we found that a prolonged incubation period of up to 19 d allowed successful isolation of H pylori from a patient who received triple therapy that failed to eradicate the bacterium.

关键词： helicobacter pylori Isolation Eradication

Effect of Ionic liquid on Detection of Carbofuran by Plant-lipases Inactivation

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Chinese Chemical Letters 2006年第11期17卷 1493-1494页

作者： yan WU li Jun he Wen Jie ZHAO Kui LU School of Chemistry and Chemical Engineering Henan University of Technology Zhengzhou 450052

Ionic liquids （ILs） as additive in phosphate buffer for detection of carbofuran by plant-lipases inhibition method is described. The higher inhibition efficiency and the shorter analysis time can be obtained by usin... 详细信息

关键词： Ionic liquid carbofuran plant-lipases.

A Service Relevance Based Matching Algorithm on Grid Environment

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 269-272页

作者： QIN Wen-yan XU li-zhen he Jie-yue Department of Computer Science and Engineering Southeast University Nanjing 210096 Jiangsu China

This paper presents a semantic metadata description model for grid services, and furthermore, a service relevance based matching algorithm is proposed. Some rea sonable parameters interpreting services characterizations are considered to advise matching process, whose weightiness and service relevance dramatically contribute to the decision making of service matching degree, And what＇s more, matching is secondly executed on the bases of experience adaptation of matching factors, which improves matching degree in gird service retrieve greatly.

关键词： grid ontology semantic metadata service relevance match

Cloning and Sequence Analysis of Prophenoloxidase from Haemocytes of the Red Swamp Crayfish,Procambarus clarkii

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Agricultural Sciences in China 2009年第3期8卷 369-379页

作者： li yan-he ZheNG Fang-liang CheN Hong-quan WANG Han-zhong WANG liu-quan XUDi-ping Anhui Agricultural University Hefei 230036 P.R.China State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences Wuhan 430071 P.R.China The Fishery Institute Anhui Academy of Agricultural Sciences Hefei 230031 P.R.China Huibei Key Laboratory of Animal Embryo & Molecular Breeding Hubei Academy of Agricultural Sciences Wuhan 430064 P.R.China

The full-length cDNA sequence of prophenoloxidase was obtained through RACE technology. The complete cDNA sequence is 3 721-bp long, containing an open reading frame （ORF） of 1 881 bp, a 154-bp 5′-untranslated region, and a 1 686- bp 3′-untranslated region with three potential functional poly（A） signals （AATAAA）. The molecular mass of the deduced amino acid sequence （627 aa） was 72.3 kDa with an estimatedpI of 5.88. It contained putative copper-binding sites （copper A： 131, 135, 167 and copper B： 301,305, 341）, and a tentative complement-like motif （GCGWPDHL）. Eight potential N-linked glycosylation sites were predicted to be present in P. clarkii prophenoloxidase. Similar to those in other arthropod prophenoloxidases reported so far, no signal peptide was detected in the crayfish prophenoloxidase. The phylogenetic trees confirmed that P. clarkii prophenoloxidase was most closely related to that of freshwater crayfish P. leniusculus and more closely related to other crustacean prophenoloxidases from shrimp, prawn, and lobster than to the insect prophenoloxidases. Besides, two putative introns were found in this sequence of genomic DNA.

关键词： prophenoloxidase cDNA Procambarus clarkii nucleotide sequence copper-binding sites intron

Elimination of the Coherent Artifact in a Pump-Probe Experiment by Directly Detecting the Background-Free Diffraction Signal

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Chinese Physics Letters 2011年第8期28卷 229-232页

作者： liU Hui ZHANG Hang SI Jin-Hai yan li-he CheN Feng HOU Xun Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Lab of Information Photonic Technique School of Electronics&information EngineeringXi'an Jiaotong UniversityXi'an 710049

The influence of the coherent artifact in a semiconductor Ga-doped ZnO film on femtosecond pump-probe measurement is *** coherent artifact mixed into the pump-probe signal can be directly inspected by detecting the background-free first-order diffraction signal induced by the interference between the pump and probe *** results show that by varying the polarization angle or adjusting the relative intensity between the pump and probe pulses,the coherent artifact can be eliminated from the pump-probe measurement.

关键词： measurement coherent Probe

Application of Optical Kerr Gate with SrTiO3 Crystal in Acquisition of Gated Spectra from a Supercontinuum

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Chinese Physics Letters 2012年第7期29卷 118-121页

作者： yan li-he JIA Sen SI Jin-Hai MATSUO Shigeki CheN Feng HOU Xun Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Lab of Information Photonic Technique School of Electronics&Information EngineeringXi’an Jiaotong UniversityXi’an 710049 Department of Ecosystem Engineering The University of Tokushima2-1 MinamijosanjimachoTokushima 770-8506Japan

We investigate the optical Kerr effect of SrTiO3 (STO) crystal,of which the nonlinear response time was measured to be less than 200fs,while the nonlinear refractive index is estimated to be 2.16 × 10^(-15)cm^(2)/*** theoptical Kerr gate (OKG) technique with an STO crystal as the Kerr medium,we obtain narrow-bandwidth and symmetric gated spectra from a supercontinuum generated in distilled water by a femtosecond *** experimental results show superiority compared with the gated spectra obtained using OKG with CS2 as the Kerr medium,demonstrating that STO crystal is a promising OKG medium.

关键词： crystal SrTiO3 continuum

Isolation and characterization of three pairs of verrucosidin epimers from the marine sediment‑derived fungus Penicillium cyclopium and confguration revision of penicyrone A and related analogues

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Marine life Science & Technology 2023年第2期5卷 223-231页

作者： yan-he li Attila Mándi Hong-Lei li Xiao-Ming li Xin li ling-Hong Meng Sui-Qun yang Xiao-Shan Shi Tibor Kurtán Bin-Gui Wang CAS and Shandong Province Key Laboratory of Experimental Marine Biology Institute of OceanologyChinese Academy of Sciencesand Laboratory of Marine Biology and Biotechnology at the Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China School of Marine Science University of Chinese Academy of SciencesBeijing 100049China Department of Organic Chemistry University of DebrecenEgyetem Tér 1Debrecen 4032Hungary Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Verrucosidins,a methylatedα-pyrone class of polyketides rarely reported upon,have been implicated in one or more neurological *** the signifcance of verrucosidins as neurotoxins,the absolute confgurations of most of the derivatives have not been accurately characterized *** this study,three pairs of C-9 epimeric verrucosidin derivatives,including the known compounds penicyrones A and B(1a/1b)and 9-O-methylpenicyrones A and B(2a/2b),the new compounds 9-O-ethylpenicyrones A and B(3a/3b),together with the related known derivative verrucosidin(4),were isolated and identifed from the culture extract of Penicillium cyclopium SD-413,which was obtained from the marine sediment collected from the East China *** structures were established based on an in-depth analysis of nuclear magnetic resonances(NMR)and mass spectroscopic *** of the absolute confgurations of these compounds was accomplished by Mosher’s method and time-dependent density functional theory(TDDFT)calculations of electronic circular dichroism(ECD)and optical rotation(OR).The confgurational assignment of penicyrone A demonstrated that the previously reported C-6 absolute confguration of verrucosidin derivatives needs to be revised from(6S)to(6R).The 9R/9S epimers of compounds 1–3 were found to exhibit growth inhibition against some pathogenic bacteria,indicating that they have potential as lead compounds for the creation of antimicrobial agents.

关键词： Marine-derived fungus Penicillium cyclopium Verrucosidin derivatives TDDFT-ECD calculations Mosher’s method Antimicrobial activity

The clinical value of enzyme-multiplied immunoassay technique monitoring the plasma concentrations of cyclosporine A after renal transplantation

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Journal of Pharmaceutical Analysis 2011年第2期1卷 139-142页

作者： Xiao-Hui Luo wu-Jun Xue Pu-Xun Tian Xiao-Ming Ding Hang yan he-li Xiang yang li Department of Renal Transplant Center of Nephropathy the First Affiliated Hospital Medical School of Xi'an Jiaotong University Xi'an 710061 China.

The feasibility and the clinical value of the enzyme-multiplied immunoassay technique （EMIT） monitoring of blood concentrations of cyclosporine A （CsA） in patients treated with CsA were investigated after kidney transplantation. The validation method was performed to the EMIT determination of CsA blood concentration, the CsA whole blood trough concentrations （Co） of patients in different time periods after renal transplantation were monitored, and combined with the clinical complications, the statistical results were analyzed and compared. EMIT was precise, accurate and stable, also with a high quality control. The mean postoperative blood concentration of CsA was as follows：〈1 month, （281.4± 57.9）ng/mL; 2 - 3 months, （264.5 ± 41.2） ng/mL; 4 - 5 months, （236.4 ± 38.9） ng/mL; 6 - 12 months, （206.5± 32.6）ng/mL; 〉12 months, （185.6± 28.1）ng/mL. The toxic reaction rate of CsA blood concentration within the recommended therapeutic concentration was 14.1%, significantly lower than that of the none-recommended dose group （37.2%）（P〈0.05）; the transplantation rejection rate was 4.4%, significantly lower than that of the none- recommended dose group （22.5%）（P〈0.05）. Using EMIT to monitor the blood concentration of CsA as the routine laboratory method is feasible, and is able to reduce the CsA toxicity and rejection significantly, leading to achieving the desired therapeutic effect.

关键词： enzyme-multiplied immunoassay technique renal transplantation cyclosporin A blood concentration monitoring