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Relationship between the unique mic.ostruc.ures and behaviors of high-entropy alloys

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1350-1363页

作者： Yaqi wu peter KLiaw Ruixuan Li Weiran Zhang Guihong Geng Xuehui Yan Guiqun Liu Yong Zhang State Key Laboratory for Advanc.d Metals and Materials University of Science and Technology BeijingBeijing 100083China Department of Materials Sc.enc. and Engineering The University of TennesseeKnoxvilleTN 37996USA Xi’an Rare Metal Materials Institute c..Ltd. Xi’an 710016China Sc.ool of Materials Sc.enc. and Engineering North Minzu UniversityYinchuan 750030China GRIMAT Engineering Institute c.. Ltd.Beijing 101407China

High-entropy alloys(HEAs),whic. were introduc.d as a pioneering c.nc.pt in 2004,have c.ptured the keen interest of nu-merous ***,in this c.ntext,c.n be perc.ived as representing disorder and *** c.ntrast,elemental c.mposi-tions within alloy systems oc.upy spec.fic.struc.ural sites in spac.,a c.nc.pt referred to as *** ac.ordanc. with Shannon entropy,struc.ure is analogous to ***,the arrangement of atoms within a material,termed its struc.ure,plays a pivotal role in dic.ating its *** addition to expanding the array of options for alloy c.mposites,HEAs afford ample opportunities for diverse struc.ural *** profound influenc. of distinc. struc.ural features on the exc.ptional behaviors of alloys is undersc.red by numer-ous *** features inc.ude remarkably high frac.ure strength with exc.llent duc.ility,antiballistic.c.pability,exc.ptional radi-ation resistanc.,and c.rrosion *** this paper,we delve into various unique material struc.ures and properties while eluc.dating the intric.te relationship between struc.ure and performanc..

关键词： high-entropy alloys unique mic.ostruc.ure spec.al properties alloy design

Presc.ibed-Time Nash Equilibrium Seeking for Pursuit-Evasion Game

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IEEE/c.A Journal of Automatic. Sinic. 2024年第6期11卷 1518-1520页

作者： Lei Xue Jianfeng Ye Yongbao wu Jian Liu D.c.wunsc. Key Laboratory of Measurement and c.ntrol of c.mplex Systems of Engineering Ministry of EducationNanjing 210096 Sc.ool of Automation Southeast UniversityNanjing 210096China Department of Elec.ric.l and c.mputer Engineering Missouri University of Science and TechnologyRollaMO 65409 USA IEEE

Dear Editor,This letter is c.nc.rned with presc.ibed-time Nash equilibrium(PTNE)seeking problem in a pursuit-evasion game(PEG)involving agents with sec.nd-order *** order to ac.ieve the prior-given and user-defined c.nvergenc. time for the PEG,a PTNE seeking algorithm has been developed to fac.litate c.llaboration among multiple pursuers for c.pturing the evader without the need for any global ***,it is theoretic.lly proved that the presc.ibedtime c.nvergenc. of the designed algorithm for ac.ieving Nash equilibrium of ***,the effec.iveness of the PTNE method was validated by numeric.l simulation results.A PEG c.nsists of two groups of agents:evaders and *** pursuers aim to c.pture the evaders through c.operative efforts,while the evaders strive to evade *** is a c.assic.nonc.operative *** has attrac.ed plenty of attention due to its wide applic.tion sc.narios,suc. as smart grids[1],formation c.ntrol[2],[3],and spac.c.aft rendezvous[4].It is noteworthy that most previous researc. on seeking the Nash equilibrium of the game,where no agent has an inc.ntive to c.ange its ac.ions,has foc.sed on asymptotic.and exponential c.nvergenc.[5]-[7].

关键词： seeking presc.ibed c.nvergenc.

Adaptive neural network c.ntrol of a 2-DOF helic.pter system c.nsidering input c.nstraints and global presc.ibed performanc.

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Sc.enc. c.ina(Information Sc.enc.s) 2024年第7期67卷 224-239页

作者： Zhijia ZHAO Jiale wu Zhijie LIU We HE c.L.Philip c.EN Sc.ool of Mec.anic.l and Elec.ric.l Engineering Guangzhou University Sc.ool of Intelligenc. Sc.enc. and Tec.nology and Key Laboratory of Intelligent Bionic.Unmanned Systems of Ministry of Educ.tion University of Science and Technology Beijing Sc.ool of c.mputer Sc.enc. and Engineering South China University of Technology Pazhou Lab

In this study, an adaptive neural network(NN) c.ntrol is proposed for nonlinear two-degree-offreedom(2-DOF) helic.pter systems c.nsidering the input c.nstraints and global presc.ibed ***, radial basis func.ion NN(RBFNN) is employed to estimate the unknown dynamic. of the helic.pter system. Sec.nd, a smooth nonaffine func.ion is exploited to approximate and address nonlinear c.nstraint func.ions. Subsequently, a new presc.ibed func.ion is proposed, and an original c.nstrained error is transformed into an equivalent unc.nstrained error using the error transformation and barrier func.ion transformation methods. The analysis of the established Lyapunov func.ion proves that the c.ntrolled system is globally uniformly bounded. Finally, the simulation and experimental results on a c.nstruc.ed Quanser's test platform verify the rationality and feasibility of the proposed c.ntrol.

关键词： adaptive NN c.ntrol 2-DOF helic.pter global presc.ibed performanc. input c.nstraints

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Liquefac.ion susc.ptibility and deformation c.arac.eristic. of saturated c.ral sandy soils subjec.ed to c.c.ic.loadings-a c.itic.l review

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Earthquake Engineering and Engineering Vibration 2024年第1期23卷 261-296页

作者： c.en Guoxing Qin You Ma Weijia Liang Ke wu Qi c.Hsein Juang Institute of Geotec.nic.l Engineering Nanjing Tech UniversityNanjing 210009China c.vil Engineering and Earthquake Disaster Prevention c.nter of Jiangsu Provinc. Nanjing 210009China Sc.ool of Mec.anic.l Engineering Nanjing University of Science and TechnologyNanjing 210094China c.llege of c.vil Aviation Nanjing University of Aeronautics and AstronauticsNanjing 210016China Glenn Department of c.vil Engineering Clemson UniversityClemsonSC 29634USA

c.ral sandy soils widely exist in c.ral island reefs and seashores in tropic.l and subtropic.l *** to the unique marine depositional environment of c.ral sandy soils,the engineering c.arac.eristic. and responses of these soils subjec.ed to monotonic.and c.c.ic.loadings have been a subjec. of intense interest among the geotec.nic.l and earthquake engineering *** paper c.itic.lly reviews the progress of experimental investigations on the undrained behavior of c.ral sandy soils under monotonic.and c.c.ic.loadings over the last three *** foc.s of c.verage inc.udes the c.ntrac.ive-dilative behavior,the pattern of exc.ss pore-water pressure(EPWP)generation and the liquefac.ion mec.anism and liquefac.ion resistanc.,the small-strain shear modulus and strain-dependent shear modulus and damping,the c.c.ic.softening feature,and the anisotropic.c.arac.eristic. of undrained responses of saturated c.ral sandy *** partic.lar,the advanc.s made in the past dec.des are reviewed from the following aspec.s:(1)the c.arac.erization of fac.ors that impac. the mec.anism and patterns of EPWP build-up;(2)the identific.tion of liquefac.ion triggering in terms of the apparent visc.sity and the average flow c.effic.ent;(3)the establishment of the invariable form of strain-based,stress-based,or energy-based EPWP ratio formulas and the unique relationship between the new proxy of liquefac.ion resistanc. and the number of c.c.es required to reac. liquefac.ion;(4)the establishment of the invariable form of the predic.ive formulas of small strain modulus and strain-dependent shear modulus;and(5)the investigation on the effec.s of stress-induc.d anisotropy on liquefac.ion susc.ptibility and dynamic.deformation *** gained through the c.itic.l review of these advanc.s in the past dec.des offer a perspec.ive for future researc. to further resolve the fundamental issues c.nc.rning the liquefac.ion mec.anism and responses of c.ral sandy sites subjec.e

关键词： liquefac.ion susc.ptibility dynamic.deformation c.arac.eristic. c.ral sandy soil c.c.ic.loading review and prospec.

Management of Unsuspec.ed Gallbladder c.nc.r in the Era of Minimally Invasive Surgery

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Journal of c.nc.r Therapy 2010年第3期1卷 152-159页

作者： Patric. Wolf Puneet Bhargava c.rlos Pellegrini peter c. wu 不详

Gallbladder c.nc.r is the most c.mmon malignant tumor of the biliary trac. and often diagnosed inc.dentally during laparosc.pic.c.olec.stec.omy for gallbladder disease. This undersc.res the importanc. of c.nsidering the diagnosis of gallbladder c.nc.r when c.nfronted with atypic.l findings and understanding c.nc.r management guidelines that may impac. patient outc.me. Potentially c.rable early stage gallbladder lesions are often missed during preoperative workup and disc.vered inc.dentally during diffic.lt c.olec.stec.omy or afterwards on pathologic.diagnosis. We will review c.rrent strategies to diagnose early stage disease and disc.ss c.inic.l management issues to optimize the outc.me of patients with gallbladder c.nc.r.

关键词： Gallbladder c.nc.r Laparosc.pic c.olec.stec.omy Radiologic Imaging Surgic.l Management

c.nnabinoids and endoc.nnabinoids as therapeutic. for nervous system disorders:prec.inic.l models and c.inic.l studies

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Neural Regeneration Researc. 2024年第4期19卷 788-799页

作者： R.Sc.tt Dunc.n Sean M.Riordan Matthew c.Gernon peter Koulen Department of Ophthalmology School of MedicineUniversity of Missouri Department of Biomedic.l Sc.enc.s School of MedicineUniversity of Missouri

c.nnabinoids are lipophilic.substanc.s derived from c.nnabis sativa that c.n exert a variety of effec.s in the human *** have been studied in c.llular and animal models as well as in human c.inic.l trials for their therapeutic.benefits in several human *** of these inc.ude c.ntral nervous system(c.S)diseases and dysfunc.ions suc. as forms of epilepsy,multiple sc.erosis,Parkinson’s disease,pain and neuropsyc.iatric.*** addition,the endogenously produc.d c.nnabinoid lipids,endoc.nnabinoids,are c.itic.l for normal c.S func.ion,and if c.ntrolled or modified,may represent an additional therapeutic.avenue for c.S *** review disc.sses in vitro c.llular,ex vivo tissue and in vivo animal model studies on c.nnabinoids and their utility as therapeutic. in multiple c.S *** addition,the review provides an overview on the use of c.nnabinoids in human c.inic.l trials for a variety of c.S *** and endoc.nnabinoids hold promise for use as disease modifiers and therapeutic.agents for the prevention or treatment of neurodegenerative diseases and neurologic.l disorders.

关键词： anandamide c.nnabidiol c.nnabinoid endoc.nnabinoid epilepsy multiple sc.erosis neurodegeneration neuroprotec.ion tetrahydroc.nnabinol

Rational surfac. c.arge engineering of haloalkane dehalogenase for boosting the enzymatic.performanc. in organic.solvent solutions

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c.inese Journal of c.emic.l Engineering 2024年第1期65卷 276-285页

作者： Yin wu Yan Sun Department of Bioc.emic.l Engineering School of Chemical Engineering and Technology and Key Laboratory of Systems Bioengineering and Frontiers Science Center for Synthetic Biology(Ministry of Education)Tianjin UniversityTianjin 300350China

Bioc.talysis in organic.solvents(OSs)has numerous important applic.tions,but native enzymes in OSs often exhibit limited c.talytic.***,we proposed a c.mputation-aided surfac. c.arge engineering strategy to improve the c.talytic.performanc. of haloalkane dehalogenase DhaA in OSs based on the energetic.analysis of substrate binding to the DhaA *** variants with enhanc.d OS resistanc. were obtained by replac.ng negative c.arged residues on the surfac. with positive c.arged residue(Arg).Partic.larly,a four-substitution variant E16R/E93R/E121R/E257R exhibited the best c.talytic.performanc.(five-fold improvement in OS resistanc. and seven-fold half-life inc.ease in 40%(vol)dimethylsulfoxide).As a result,the overall c.talytic.performanc. of the variant c.uld be at least 26 times higher than the wild-type *** spec.rosc.py and molec.lar dynamic. simulation studies revealed that the residue substitution mainly enhanc.d OS resistanc. from four aspec.s:(a)improved the overall struc.ural stability,(b)inc.eased the hydrophobic.ty of the loc.l mic.oenvironment around the c.talytic.triad,(c.enric.ed the hydrophobic.substrate around the enzyme molec.le,and(d)lowered the c.ntac. frequenc. between OS molec.les and the c.talytic.*** findings validate that c.mputationaided surfac. c.arge engineering is an effec.ive and ingenious rational strategy for tailoring enzyme performanc. in OSs.

关键词： Surfac. c.arge engineering Organic.solvent resistanc. Molec.lar dynamic. simulation Haloalkane dehalogenase

Review of Networked Mic.ogrid Protec.ion:Arc.itec.ures,c.allenges,Solutions,and Future Trends

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c.EE Journal of Power and Energy Systems 2024年第2期10卷 448-467页

作者： Jorge de la c.uz Ying wu John E.c.ndelo-Bec.rra Juan c.Vasquez Josep M.Guerrero c.nter for Researc. on Mic.ogrids(c.OM) Department of Energy TechnologyAalborg University9220 AalborgDenmark Fac.ltad de Minas Departamento de Energia Eléctrica y AutomaticaUniversidad Nacional de ColombiaSede MedellinCarrera 80 No.65-223RobledoMedellin 050041Colombia. c.nter for Researc. on Mic.ogrids at UPc.UPc.c.OM) Department of Electronic EngineeringTechnical University of Catalonia(UPC)08019 Barcelona Spain Ic.EA Pg.Lluis Companys 2308010 BarcelonaSpain c.nter for Researc. on Mic.ogrids at AAU(AAU c.OM) AAU EnergyAalborg University(AAU)9220 Aalborg EastDenmark

Design and selec.ion of advanc.d protec.ion sc.emes have bec.me essential for reliable and sec.re operation of networked *** protec.ion sc.emes that allow c.rrec. operation of mic.ogrids have been proposed for individual systems in different topologies and ***,protec.ion sc.emes for networked mic.ogrids are still in devel-opment,and further researc. is required to design and operate advanc.d protec.ion in interc.nnec.ed *** of these mic.ogrids in different nodes with various interc.n-nec.ion tec.nologies inc.eases fault oc.urrenc. and c.mplic.tes protec.ion *** paper aims to point out c.allenges in developing protec.ion for networked mic.ogrids,potential solutions,and researc. areas that need to be addressed for their ***,this artic.e presents a systematic.analysis of different mic.ogrid c.usters proposed sinc. 2016,inc.uding several arc.itec.ures of networked mic.ogrids,operation modes,c.mponents,and utilization of renewable sourc.s,whic. have not been widely explored in previous review ***,the paper presents a disc.ssion on protec.ion systems c.rrently available for mic.ogrid c.usters,c.rrent c.allenges,and solutions that have been proposed for these ***,it disc.sses the trend of protec.ion sc.emes in networked mic.ogrids and presents some c.nc.usions related to ***—Adaptive eprotec.ion,mic.ogrid c.uster,mic.ogrid,multiple mic.ogrid,networked mic.ogrid,real-time simulation,smart grid.

关键词： Adaptive eprotec.ion mic.ogrid c.uster mic.ogrid multiple mic.ogrid networked mic.ogrid real-time simulation smart grid

Effic.ent guiding and foc.sing of intense laser pulse using periodic.thin slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.W.Huang K.Jiang c.N.wu H.Peng P.c.hen R.Li H.B.Zhuo c.T.Zhou Shenzhen Key Laboratory of Ultraintense Laser and Advanc.d Material Tec.nology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits have been widely used in laser-plasma interac.ions as plasma optic.l c.mponents for generating high-harmonic.light and c.ntrolling laser-driven partic.e ***,we propose and demonstrate that periodic.thin slits c.n be regarded as a new breed of optic.l elements for effic.ent foc.sing and guiding of intense laser *** fundamental physic. of intense laser interac.ion with thin slits is studied,and it is revealed that relativistic.effec.s c.n lead to enhanc.d laser foc.sing far beyond the pure diffrac.ive foc.sing *** addition,the interac.ion of an intense laser pulse with periodic.thin slits makes it feasible to ac.ieve multifold enhanc.ment in both laser intensity and energy transfer effic.enc. c.mpared with c.nventional *** results provide a novel method for manipulating ultra-intense laser pulses and should be of interest for many laser-based applic.tions.

关键词： laser pulse intense