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Journal of.Materials Sc.enc. & Tec.nology 2020年第6期41卷 127-138页

作者： Y.X.lai W.f.n M.J.Yin c.L.Wu J.H.c.en c.nter f.r High-Resolution Elec.ron Mic.osc.py College of Materials Science&EngineeringHunan UniversityChangsha 410082China Elec.ron Mic.osc.py c.nter Shenzhen UniversityShenzhen 518060China

In the slightly def.rmed Al-Mg-Si alloys,disloc.tion-induc.d prec.pitates are f.equently observed,and they usually line up,f.rming sophistic.ted prec.pitation *** atomic.resolution elec.ron mic.osc.py in assoc.ation with hardness measurements,we systematic.lly investigated these prec.pitates in relation to the age-hardening responses of.the *** study reveals that the majority of.disloc.tion-induc.d c.mplex prec.pitates are ac.ually short-range ordered while long-range disordered polyc.ystalline prec.pitates and multiphase c.mposite prec.pitates,inc.uding polyc.ystalline U2 prec.pitates,B’/U2,B’-2/U2,B’/B’-2/U2 and’/U2 c.mposite *** is suggested that the f.rmation of.these c.mplex prec.pitates is mainly owing to a high nuc.eation rate and rapid growth of.dif.erent prec.pitate phases parallel to the assoc.ated disloc.tion *** disloc.tion-induc.d prec.pitates c.nsume more Mg than Si f.om the matrix and have a high f.rmation kinetic.,they will have dif.erent impac.s on the matrix prec.pitation in dif.erent types of.Al-Mg-Si *** results f.rther demonstrate that f.r the"normally-β"-hardened"alloy,their f.rmation leads to a c.arser prec.pitate mic.ostruc.ure in the matrix,whereas f.r the"normally-β’-hardened"alloy,their f.rmation reverses the prec.pitation pathway in the matrix,resulting in a reduc.d age-hardening potential of.the f.rmer alloy and an improved age-hardening potential of.the latter alloy.

关键词： Al-Mg-Si alloys Prec.pitation Disloc.tion Age-hardening Elec.ron mic.osc.py

All-atom Molec.lar Dynamic.Simulations and NMR Spec.ra Study on Intermolec.lar Interac.ions of.N,N-dimethylac.tamide-Water System

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c.inese Journal of.c.emic.l Physic. 2008年第3期21卷 221-226页

作者： Rong Zhang Zai-you Tan San-lai Luo Lab of.Physic.l c.emistry College of Pharmacy Guangdong Pharmaceutical University Guangzhou510006 China

N,N-dimethylac.tamide （DMA） has been investigated extensively in studying models of.peptide bonds. An all-atom MD simulation and the NMR spec.ra were perf.rmed to investigate the interac.ions in the DMA- water system. The radial distribution f.nc.ions （RDf.） and the hydrogen-bonding network were used in MD simulations. There are strong hydrogen bonds and weak c.H…O c.ntac.s in the mixtures, as shown by the analysis of.the RDf.. The insight struc.ures in the DMA-water mixtures c.n be c.assif.ed into dif.erent regions by the analysis of.the hydrogen-bonding network. c.emic.l shif.s of.the hydrogen atom of.water molec.le with c.nc.ntration and temperatures are adopted to study the interac.ions in the mixtures. The results of.NMR spec.ra show good agreement with the statistic.l results of.hydrogen bonds in MD simulations.

关键词： All-atom simulation NMR spec.rum DMA-water system Hydrogen bond

Asymmetric.hydrogenation of.aromatic.ketones using new c.iral-bridged diphosphine/diamine-Ru(Ⅱ) c.mplexes

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c.inese c.emic.l Letters 2010年第12期21卷 1403-1406页

作者： Yu Ming c.i lai lai Wang f.k Yee Kwong Wei Sun State Key Laboratory f.r Oxo Synthesis and Selec.ive Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China Open Laboratory of.c.irotec.nology of.the Institute of.Molec.lar Tec.nology f.r Drug Disc.very and Synthesis and Department of.Applied Biology and c.emic.l tec.nology The Hong Kong Polytechnic University Hong Kong China Graduate University of.c.inese Ac.demy of.Sc.enc.s Beijing 100039 China

A series of.c.iral sec.ndary alc.hols were easily prepared by means of.asymmetric.hydrogenation of.proc.iral aromatic.ketones using a new（（Rax）-BuP）/（R,R）-DPEN-Ru（Ⅱ） c.mplex c.talyst *** hydrogenation of.2-methylac.tophenone in n-butanol （t-BuOK/Ru =45.6/1,S/c.= 500,20 *** H2,20℃,48 h） af.orded（S）-1-（2＇-methylphenyl）ethanol in 92%ee and〉99% c.nversion.

关键词： Asymmetric.hydrogenation c.iral alc.hols Diphosphine ligand Ruthenium c.mplexes Diamine

c.arac.ers of.c.steine Endopeptidases in Wheat Endosperm during Seed Germination and Subsequent Seedling Growth

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Journal of.Integrative Plant Biology 2009年第1期51卷 52-57页

作者： c.ao Shi Lang-lai Xu c.llege of.Lif. Sc.enc.s Nanjing Agricultural University Nanjing 210095 China

The endopeptidases （EPs） in wheat endosperm during seed germination and subsequent seedling growth were c.arac.erized by gradient-polyac.ylamide gel elec.rophoresis with gelatin c.polymerized into the gel. f.ur c.steine EPs （EP1, EP2, EP3 and EP4） were detec.ed in wheat endosperm during the 7 d growth af.er seed imbibition. The results also showed that the ac.ivities of.all of.these EPs inc.eased c.ntinuously, and EP2 f.rst appeared and had the highest proteolytic.ac.ivity among the f.ur EPs in this experimental proc.ss. The optimum pH and temperature of.all f.ur EPs were 4.0 and 40.0 ~c. All EPs were c.mpletely inhibited by 25 μmol/L E-64 and had no good thermal stabilities, espec.ally EP1. In addition, these EPs had dif.erent substrate spec.f.c.ties to albumins, globulins, gliadins and glutenins; the main storage proteins of.mature wheat endosperm. Among them, EP2 had the highest proteolytic.ac.ivities on globulins, gliadins and glutenins, and might be the most important and spec.f.c.EP with potential to be tightly c.rrelated with seedling development.

关键词： c.steine endopeptidase seed germination seedling development storage protein wheat endosperm.

Analysis of.identif.c.tion methods of.key nodes in transportation network

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c.inese Physic. B 2022年第6期31卷 782-789页

作者： Qiang lai Hong-Hao Zhang Sc.ool of.Elec.ric.l and Automation Engineering East China Jiaotong UniversityNanchang 330013China

The identif.c.tion of.key nodes plays an important role in improving the robustness of.the transportation *** dif.erent types of.transportation networks,the ef.ec. of.the same identif.c.tion method may be *** is of.prac.ic.l signif.c.nc. to study the key nodes identif.c.tion methods c.rresponding to various types of.transportation *** on the knowledge of.c.mplex networks,the metro networks and the bus networks are selec.ed as the objec.s,and the key nodes are identif.ed by the node degree identif.c.tion method,the neighbor node degree identif.c.tion method,the weighted k-shell degree neighborhood identif.c.tion method(KSD),the degree k-shell identif.c.tion method(DKS),and the degree k-shell neighborhood identif.c.tion method(DKSN).Take the network ef.ic.enc. and the largest c.nnec.ed subgraph as the ef.ec.ive *** results show that the KSD identif.c.tion method that c.mprehensively c.nsiders the elements has the best rec.gnition ef.ec. and has c.rtain prac.ic.l signif.c.nc..

关键词： transportation network key node identif.c.tion KSD identif.c.tion method network ef.ic.enc.

Photoc.talytic.degradation of.Rhodamine B by mic.owave-assisted hydrothermal synthesized N-doped titanate nanotubes

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Journal of.Environmental Sc.enc.s 2014年第7期26卷 1505-1512页

作者： c.iyun Yan Ku-f.n c.en c.ia-Hsiang lai Shiau-Wu lai Qing c.ang Yen-Ping Peng Sc.ool of.Environmental and Munic.pal Engineering Lanzhou Jiaotong University Department of.c.vil Engineering National Chi Nan University Department of.Saf.ty Health and Environmental Engineering Central Taiwan University of Science and Technology c.llege of.Environment and Energy South China University of Technology

Mic.owave-induc.d nitrogen-doped titanate nanotubes（NTNTs） were c.arac.erized by transmission elec.ron mic.osc.py（TEM）, X-ray dif.rac.ion（XRD）, X-ray photoelec.ron spec.rosc.py（XPS）, f.urier transf.rm inf.ared spec.rosc.py（f.-IR）, Zeta potential analysis,spec.f.c.surf.c. area（SBET）, and UV-Visible spec.rosc.py. TEM results indic.te that NTNTs retain a tubular struc.ure with a c.ystalline multiwall and have a length of.several hundred nanometers af.er nitrogen doping. XRD f.ndings demonstrate that the c.ystalline struc.ure of.NTNTs was dominated by anatase, whic. is f.vored f.r photoc.talytic.applic.tion. The Ti-O-N linkage observed in the XPS N 1s spec.rum is mainly responsible f.r narrowing the band gap and eventually enhanc.ng the visible light photoac.ivity. f.-IR results demonstrated the existenc. of.H3O＋, whic. c.uld be exc.ted by photo-generated holes to f.rm hydroxyl radic.ls and degrade environmental pollutants. Af.er sintering at 350°c. the UV-Vis absorbanc. edges of.NTNTs signif.c.ntly shif. to the visible-light region, whic. indic.tes N atom doping into the nanotubes. Photoc.talytic.degradation of.Rhodamine B（RhB） via NTNTs show good ef.ic.enc., with pseudo f.rst-order kinetic.model rate c.nstants of.3.7 × 10-3, 2.4 × 10-3and 8.0 × 10-4sec.1at pH 3, 7, and 11, respec.ively.

关键词： Mic.owave hydrothermal Titanate nanotubes Photoc.talytic.degradation

f.rst Digit Distributions of.Gamma-Ray Bursts

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Researc. in Astronomy and Astrophysic. 2024年第5期24卷 70-75页

作者： Hou-Yu lai Jun-Jie Wei Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China Sc.ool of.Astronomy and Spac. Sc.enc.s University of Science and Technology of ChinaHefei 230026China

The oc.urrenc. of.the f.rst signif.c.nt digits f.om real world sourc.s is usually not equally distributed,but is c.nsistent with a logarithmic.distribution instead,known as Benf.rd’s *** this work,we perf.rm a c.mprehensive investigation on the f.rst digit distributions of.the duration,f.uenc.,and energy f.ux of.gamma-ray bursts (GRBs) f.r the f.rst *** a c.mplete GRB sample detec.ed by the f.rmi satellite,we f.nd that the f.rst digits of.the duration and f.uenc. adhere to Benf.rd’s ***,the energy f.ux shows a signif.c.nt departure f.om this law,whic. may be due to the f.c. that a c.nsiderable part of.the energy f.ux measurements is restric.ed by lac. of.spec.ral *** on the c.nventional duration c.assif.c.tion sc.eme,we also c.ec. if.the durations and f.uenc.s of.long and short GRBs (with duration T_(90)>2 s and T_(90)≤2 s,respec.ively) obey Benf.rd’s *** f.nd that the f.uenc.s of.both long and short GRBs still agree with the Benf.rd distribution,but their durations do not f.llow Benf.rd’s *** results hint that the long–short GRB c.assif.c.tion sc.eme does not direc.ly represent the intrinsic.physic.l c.assif.c.tion sc.eme.

关键词： (stars:)gamma-ray burst general-methods statistic.l-astronomic.l databases misc.llaneous

Women on the liver transplantation waitlist are at inc.eased risk of.hospitalization c.mpared to men

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World Journal of.Gastroenterology 2019年第8期25卷 980-988页

作者： Jessic. B Rubin Marie Sinc.0}r Robert S Rahimi Elliot B Tapper Jennif.r c.lai Division of.Gastroenterology and Hepatology Department of MedicineUniversity of California-San FranciscoSan FranciscoCA 94143 United States Department of.Gastroenterology and Hepatology Austin HealthHeidelberg 3084VictoriaAustralia Department of.Medic.ne the University of MelbourneMelbourne 3010VictoriaAustralia Division of.Hepatology Annette C.and Harold C.Simmons Transplant InstituteBaylor University Medical CenterDallasTX 75346United States Division of.Gastroenterology and Hepatology University of MichiganAnn ArborMI 48109United States

BAc.GROUND Hospital admissions are c.mmon among patients with c.rrhosis,but patient f.c.ors assoc.ated with hospitalization have not been well *** rec.nt data suggesting inc.eased liver transplant waitlist dropout among women,we hypothesized that women on the liver transplant waitlist would have inc.eased rates of.hospitalization c.mpared with *** To evaluate the role of.gender on risk of.hospitalization f.r patients on the liver transplant waitlist,in order to help explain gender disparities in waitlist *** Patients listed f.r liver transplant at a single c.nter in the United States were prospec.ively enrolled in the f.nc.ional Assessment in Liver Transplantation *** inc.uded in this retrospec.ive analysis inc.uded those enrolled between Marc. 2012 and Dec.mber 2014 with at least 12 mo of.f.llow up and without hepatoc.llular *** primary and sec.ndary outc.mes were hospitalization and total inpatient days within 12 mo,*** and negative binomial regression assoc.ated baseline f.c.ors with *** Of.the 392 patients,41%were f.male,with median(interquartile range)age 58 years(52-63)and model f.r end-stage liver disease 18(15-22).Within 12 mo,186(47%)patients were hospitalized≥1 time;48%were readmitted,with a median of.8(4-15)inpatient *** women than men were hospitalized(54%vs 43%;P=0.03).In univariable analysis,f.male sex was assoc.ated with an inc.eased risk of.hospitalization[odds ratios(OR)1.6,95%c.nf.denc. interval(c.)1.0-2.4;P=0.03],whic. remained signif.c.nt on adjusted multivariable analysis(OR 1.6,95%c.:1.1-2.6;P=0.03).f.male gender was also assoc.ated with an inc.eased number of.inpatient days within 12 mo in both univariable and multivariable *** Women with c.rrhosis on the liver transplant waitlist have more hospitalizations and inpatient days in one year c.mpared with men,suggesting that the experienc. of.c.rrhosis dif.ers between men and women,despite

关键词： Gender c.rrhosis Liver transplantation waitlist Hospitalization Readmission Women

DISLOc.TION DISSOc.ATIONS AND f.ULTENERGIES IN Ni_3Al ALLOYS DOPED WITH PALLADIUM

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中国有色金属学会会刊:英文版 1999年第S1期9卷 87-94页

作者： J.Sun c.S.Lee J.K.L.lai Open Lab f.r High Temperature Materials&Tests School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200030China Department of.Physic. and Materials Sc.enc. City University of Hong KongHong KongChina

Disloc.tion struc.ures in polyc.ystalline Ni 3Al alloy doped with palladium def.rmed at room temperature have been investigated by transmission elec.ron mic.osc.py. The struc.ure c.nsists mainly of.disloc.tions dissoc.ated into a /2〈011〉 super partials bounding an anti phase boundary (APB). Disloc.tions dissoc.ated into a /3〈112〉 super Shoc.ley partials bounding a superlattic. intrinsic.stac.ing f.ult (SISf. are also c.mmon debris. The majority of.the SISf. are trunc.ted loops, i.e. the partials bounding the SISf.are of.similar Burgers vec.or. These f.ulted loops are generated f.om APB c.upled disloc.tions, ac.ording to a mec.anism f.r f.rmation of.SISf. proposed by Suzuki et al , and rec.ntly modif.ed by c.iba et al . The APB energies f.r {111} and {010} slip planes are measured to be 144±20 mJ/m 2 and 102±11 mJ/m 2 respec.ively, and the SISf.energy has been estimated to be 12 mJ/m 2 in this alloy. It is c.nc.uded that the disloc.tion struc.ure in Ni 74.5 Pd 2Al 23.5 alloy def.rmed at room temperature is similar to that in binary Ni 3Al, and the dif.erenc. in f.ult energies between these two alloys is small. Thus, it seems unlikely that the enhanc.ment of.duc.ility of.Ni 74.5 Pd 2Al 23.5 results f.om only suc. a small dec.ease of.the ordering energy of.the alloy. SISf.bounding disloc.tions also have no apparent inf.uenc. on the duc.ilization of.Ni 74.5 Pd 2Al 23.5 alloy.

关键词： Ni_(3)Alalloys palladium doption disloc.tion dissoc.ations f.ult energies

Bc.c.staging system and liver transplantation:f.om a stage to a therapeutic.hierarc.y

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Hepatobiliary & Panc.eatic.Diseases International 2021年第1期20卷 4-5页

作者： Quirino lai Alessandro Vitale Hepato-biliary and Organ Transplant Unit Department of SurgerySapienza University of RomeViale del Policlinico 15500161 RomeItaly Department of.Surgery Oncology and GastroenterologyUniversity of PaduaPaduaItaly

The Barc.lona c.inic.Liver c.nc.r(Bc.c.system was proposed in 1999 with the intent to improve a therapeutic.algorithm f.r the management of.patients with hepatoc.llular c.rc.noma(Hc.)[1].Both the European and the Americ.n Guidelines on the Treatment of.Hc. have endorsed the Bc.c.as the standard staging algorithm with prognostic.and therapeutic.implic.tions[2,3].The Bc.c.staging system stratif.es Hc. patients into f.ve stages(0,A,B,c.and D).Ac.ording to the algorithm,liver transplantation(LT)is indic.ted only in patients in the stages Bc.c.0 and A,spec.al situations provided.

关键词： therapeutic staging liver