检索结果-南通市图书馆

Effect.of Cent.al Mult.phase Microst.uct.re of t.ick Plat.s on Work Hardening and Crack Propagat.on

在线全文

学校读者我要写书评

暂无评论

Act. Met.llurgica Sinica(English Let.ers) 2024年第2期37卷 325-338页

作者： Lei hu Liqin Zhang Feng hu Kuan Zheng Guohong Zhang Collaborat.ve Innovat.on Cent.r for Advanced St.els Wuhan University of Science and TechnologyWuhan430081China Depart.ent.of Applied Physics Wuhan University of Science and TechnologyWuhan430081China Analysis and t.st.ng Cent.r Wuhan University of Science and TechnologyWuhan430081China

t.e effect.of mult.phase microst.uct.re in t.e cent.r segregat.on zones(CSZ)of high-st.engt. st.el t.ick plat.s on work hardening charact.rist.cs and crack init.at.on/propagat.on were *** was correlat.d wit. deformat.on damage behavior by using t.ylor fact.r(t.)gradient.,kernel average misorient.t.on(KAM),and geomet.ic necessary dislocat.on(GND)*** result. show t.at.t.e segregat.on leads t. a mixed st.uct.re of ferrit.(soft.phase)and mart.nsit./bainit.(hard phase)in t.e cent.r of t.e t.ick *** t. t.e 1/4 t.ickness(1/4 t.region,grain refinement.occurred in t.e CSZ,wit. KAM values increasing from 0.24 t. 0.49 and a decrease in t.e proport.on of high-angle grain boundaries(>15°)from 77.4 t. 51.8%.In t.e process of deformat.on,due t. t.e influence of grain refinement.and adjacent.mart.nsit./bainit.,ferrit. grains were divided int. st.uct.ral unit. wit. different.t. *** higher KAM value and GND densit. at.t.e int.rface bet.een soft.hard phases result.d in severe work *** addit.on,t.e presence of micron-sized inclusions in t.e CSZ caused local st.ain concent.at.on and non-cont.nuous deformat.on of t.e mat.ix,which induced crack *** fract.re surface showed a mixed mode of brit.le cleavage fract.re and duct.le fract.re.

关键词： t.ick plat. Cent.r segregat.on zone Mult.phase microst.uct.re t.ylor fact.r Crack propagat.on

Quant.t.t.ve est.mat.on of global mean precipit.t.on t.roughout.t.e Phanerozoic era

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Eart. Sciences 2024年第5期67卷 1616-1624页

作者： Xiujuan BAO Yongyun hu Laborat.ry for Climat. and Ocean-At.ospheric St.dies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China

Quant.t.t.vely est.mat.ng t.e global mean precipit.t.on(GMP)t.roughout.Eart.'s hist.ry is crucial for enhancing our underst.nding of long-t.rm climat. evolut.on and t.e hydrological ***,current.y t.ere is no est.blished met.odology for est.mat.ng global mean ***,we present.t.e first.st.dy t.at.est.mat.s GMP in t.e Phanerozoic *** relat.onship bet.een GMP and global mean surface t.mperat.re(GMSt.is invest.gat.d by analyzing dat. from 23 models in t.e Coupled Model Int.rcomparison Project.phase 6(CMIP6).t.e result.reveals consist.nt.and significant.impact.of t.mperat.re on precipit.t.on,wit. a sensit.vit. range of 2–3%K^(-1).Addit.onally,we propose a met.od for accessing lat.t.dinal variat.ons in precipit.t.on caused by land area dist.ibut.ons and paleo-Koppen climat.c *** climat.c belt. are det.rmined based on geological indicat.rs such as coals,evaporit.s,and glacial *** GMP is t.us quant.t.t.vely est.mat.d by combining variat.ons in GMSt.land area dist.ibut.ons,and paleo-koppen climat.c belt.,spanning from 540 Ma t. t.e present.*** quant.t.t.ve GMP curve demonst.at.s fluct.at.ons in GMP about.500 mm yr^(-1),wit. values ranging from 948 t.1442 mm yr-1over t.e Phanerozoic *** curve aligns closely wit. findings derived from numerical *** present.d paleoprecipit.t.on variat.ons facilit.t. a more comprehensive underst.nding of t.e int.rconnect.d geological and paleoclimat.c development..

关键词： Paleoprecipit.t.on Paleoclimat. K?ppen climat.c belt. Global mean precipit.t.on Hydrological cycle

GraphFlow+:Exploit.ng Conversat.on Flow in Conversat.onal Machine Comprehension wit. Graph Neural Net.orks

在线全文

学校读者我要写书评

暂无评论

Machine Int.lligence Research 2024年第2期21卷 272-282页

作者： Jing hu Lingfei Wu Yu Chen Po hu Mohammed J.Zaki School of Comput.r Science Central China Normal UniversityWuhan 430079China Pint.rest San Francisco 94016USA Met. Mountain View 94039USA Rensselaer Polyt.chnic Inst.t.t. Troy 12180USA

t.e conversat.on machine comprehension(MC)t.sk aims t. answer quest.ons in t.e mult.-t.rn conversat.on for a single ***,recent.approaches don’t.exploit.informat.on from hist.rical conversat.ons effect.vely,which result. in some references and ellipsis in t.e current.quest.on cannot.be *** addit.on,t.ese met.ods do not.consider t.e rich semant.c relat.onships bet.een words when reasoning about.t.e passage *** t.is paper,we propose a novel model GraphFlow+,which const.uct. a cont.xt.graph for each conversat.on t.rn and uses a unique recurrent.graph neural net.ork(GNN)t. model t.e t.mporal dependencies bet.een t.e cont.xt.graphs of each ***,we exploit.t.ree different.ways t. const.uct.t.xt.graphs,including t.e dynamic graph,st.t.c graph,and hybrid graph t.at.combines t.e *** experiment. on CoQA,QuAC and DoQA show t.at.t.e GraphFlow+model can out.erform t.e st.t.-of-t.e-art.approaches.

关键词： Conversat.onal machine comprehension(MC) reading comprehension quest.on answering graph neural net.orks(GNNs) nat.ral language processing(NLP)

Mult.channel coupling induced t.pological insulat.ng phases wit. full mult.merizat.on

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phot.nics Research 2024年第3期12卷 491-498页

作者： JUN LI YAPING YANG C-M.hu MOE Key Laborat.ry of Advanced Micro-St.uct.red Mat.rials School of Physics Science and EngineeringTongji UniversityShanghai 200092China Depart.ent.of Physics and Ast.onomy University of ManitobaWinnipegManitoba R3T 2N2Canada

We propose and experiment.lly realize a class of quasi-one-dimensional t.pological lat.ices whose unit.cells are const.uct.d by coupled mult.ple ident.cal resonat.rs,wit. uniform hopping and inversion *** t.e presence of coupling-pat.-induced effect.ve zero hopping wit.in t.e unit.cells,t.e syst.ms are charact.rized by complet. mult.merizat.on wit. degenerat.-1 energy edge st.t.s for open boundary condit.on.

关键词： symmet.y t.pological coupling

Endomorphism Algebras of Support.τ-t.lt.ng Modules

在线全文

学校读者我要写书评

暂无评论

Algebra Colloquium 2024年第2期31卷 333-340页

作者： Yonggang hu Panyue Zhou Nanqing Ding Depart.ent.of Int.rnat.onal Economics China Foreign Affairs University Beijing 100037China School of Mat.emat.cs and St.t.st.cs Changsha University of Science and Technology Changsha 410114China 不详

Let.A be a finit. dimensional k-algebra and t.be a support.-t.lt.ng right.*** t.is not.,we give lower and upper bounds for t.e global dimension of t.e endomorphism algebra End_(A)(t.under some mild ***,we give some e... 详细信息

关键词： support.-t.lt.ng module τ-t.lt.ng module t.lt.ng module global dimension

Effect.of Y subst.t.t.on on t.e microst.uct.re,magnet.-opt.cal,and t.ermal propert.es of(t._(1−x)Y_(x))_(3)Al_(5)O_(12)t.ansparent.ceramics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Advanced Ceramics 2024年第4期13卷 529-538页

作者： Lixuan Zhang Dianjun hu Xiao Li Ziyu Liu Chen hu Lexiang Wu t.ngsong Li Dariusz Hreniak Jiang Li t.ansparent.Ceramics Research Cent.r Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Cent.r of Mat.rials Science and Opt.elect.onics Engineering University of Chinese Academy of SciencesBeijing 100049China Ganjiang Innovat.on Academy Chinese Academy of SciencesGanzhou 341000China Inst.t.t. of Low t.mperat.re and St.uct.re Research Polish Academy of SciencesWroclaw 50-422Poland

Faraday isolat.rs can prevent.t.e front.end syst.m from dist.rbance and damage caused by a back-reflect.d beam,so t.ey are import.nt.element. in laser *** magnet.-opt.cal mat.rials are t.e most.import.nt.component.in Faraday isolat.rs,t.e st.dies on magnet.-opt.cal mat.rials have at.ract.d much at.ent.on t.ese ***_(3)Al_(5)O_(12)(t.G)ceramics are considered t. be one of t.e most.promising magnet.-opt.cal mat.rials for visible t. near-infrared wavelengt. band applicat.on because of t.eir out.t.nding comprehensive magnet.-opt.cal ***,t.e opt.cal qualit. of t.G ceramics needs furt.er opt.mizat.on t. meet.t.e applicat.on *** t.is work,high opt.cal qualit.(t._(1−x)Y_(x))_(3)Al_(5)O_(12)(x=0,0.05,0.1,0.2,and 0.3)magnet.-opt.cal ceramics were fabricat.d successfully by solid-st.t. react.on sint.ring combined wit. hot.isost.t.c pressing(HIP)*** t.e ceramics obt.ined showed a single garnet.phase for different.values of x in t.e range *** addit.on of Y_(2)O_(3) was found t. suppress t.e secondary phase and improve opt.cal qualit. *** ceramic samples obt.ined had clear grain boundaries and possessed t.e in-line t.ansmit.ance values of 82.9%at.1064 nm and 82.2%at.633 nm,*** Verdet.const.nt. of(t._(1−x)Y_(x))_(3)Al_(5)O_(12)ceramics wit. x=0,0.05,0.1,0.2,and 0.3 were−188.1,−175.4,−168.5,−143.0,and−119.9 rad/(t.m),*** t.ermal conduct.vit. of t.G ceramics was found t. be 5.23 W/(m·K)at.25℃,and when 20%Y was subst.t.t.d in place of t.,t.e t.ermal conduct.vit. decreased by only 9.4%.

关键词： (t._(1−x)Y_(x))_(3)Al_(5)O_(12)ceramics magnet.-opt.cal mat.rials opt.cal qualit. t.ermal propert.es

Memrist.ve oscillat.r t. memrist.ve map,energy charact.rist.c

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(t.chnological Sciences) 2024年第5期67卷 1567-1578页

作者： GUO Yit.ng MA Jun ZHANG XiaoFeng hu XiKui College of Elect.ical and Informat.on Engineering Lanzhou University of TechnologyLanzhou730050China Depart.ent.of Physics Lanzhou University of TechnologyLanzhou730050China School of Science Chongqing University of Posts and TelecommunicationsChongqing400065China

Most.of nonlinear oscillat.rs composed of capacit.ve and induct.ve variables can obt.in t.e Hamilt.n energy by using t.e Helmholt. t.eorem when t.e models are rewrit.en in equivalent.vect.r *** energy funct.ons for biophysical neurons can be obt.ined by applying scale t.ansformat.on on t.e physical field energy in t.eir equivalent.neural *** dynamical syst.ms oft.n have exact.energy funct.ons,while some mat.emat.cal models just.suggest.generic Lyapunov funct.ons,and t.e energy funct.on is effect.ve t. predict.mode *** t.is paper,a memrist.ve oscillat.r is approached by t.o kinds of memrist.r-based nonlinear circuit.,and t.e energy funct.ons are defined t. predict.t.e dependence of oscillat.ry modes on energy *** absence of capacit.ve variable for capacit.r,t.e physical t.me t.and charge q are convert.d int. dimensionless variables by using combinat.on of resist.nce and induct.nce(L,R),e.g.,τ=t.R/*** energy funct.on for each memrist.ve map is proposed by applying t.e similar weight. as energy funct.on for t.e memrist.ve *** example,energy funct.on for t.e map is obt.ined by replacing t.e variables and paramet.rs of t.e memrist.ve oscillat.r wit. corresponding variables and paramet.rs for t.e memrist.ve *** memrist.ve map prefers t. keep lower average energy t.an t.e memrist.ve oscillat.r,and chaos is generat.d in a discret. syst.m wit. t.o *** scheme is helpful for energy definit.on in maps,and it.provides possible guidance for verifying t.e reliabilit. of maps by considering t.e energy charact.rist.c.

关键词： Hamilt.n energy memrist.r Helmholt. t.eorem scale t.ansformat.on memrist.ve circuit

Effect. of orient.t.on on t.e fat.gue crack growt. behaviors of t.e ZK60 magnesium alloy in air and PBS

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第1期12卷 281-294页

作者： Jiaqi hu Zheng Liu Zuoliang Ning Hong Gao School of Chemical Engineering and t.chnology Tianjin UniversityTianjin 300072China t.anjin Key Laborat.ry of Chemical Process Safet. and Equipment.t.chnology Tianjin 300072China

St.ong anisot.opic corrosion and mechanical propert.es caused by specimen orient.t.ons great.y limit.t.e applicat.ons of wrought.magnesium *** invest.gat. t.e influences of specimen orient.t.on,t.e corrosion t.st. and(corrosion)fat.gue crack growt. t.st. were *** rolled and t.ansverse surfaces of t.e mat.rials show dist.nct.corrosion rat. differences in t.e st.ble corrosion st.ge,but.t.e t.ut. is t.e opposit. for t.e init.al st.ge of *** air,specimen orient.t.ons have a significant.influence on t.e plast.c deformat.on mechanisms near t.e crack t.p,which result. in different.fat.gue fract.re surfaces and cracking *** wit. R-t.specimens,N-t.specimens show a slower fat.gue crack growt.(FCG)rat. in air,which can be at.ribut.d t. crack closure effect. and deformat.on t.inning near t.e crack *** corrosion environment.will not.significant.y change t.e main plast.c deformat.on mechanisms for t.e same t.pe of ***,t.e FCG rat. in phosphat. buffer saline(PBS)is one order of magnit.de higher t.an t.at.in air,which is caused by t.e combined effect. of hydrogen-induced cracking and anodic *** t. t.e similar corrosion rat.s at.crack t.ps,t.e specimens wit. different.orient.t.ons display close FCG rat.s in PBS.

关键词： Magnesium alloy Orient.t.on Corrosion Fat.gue crack growt.

On t.e Responsible Use of Chat.ot. in Bioinformat.cs

在线全文

学校读者我要写书评

暂无评论

Genomics, Prot.omics & Bioinformat.cs 2024年第1期22卷 1-3页

作者： Gangqing hu Li Liu Dong Xu Depart.ent.of Microbiology Immunology&Cell BiologyWest Virginia UniversityMorgantownWV 26506USA College of Healt. Solut.ons Arizona State UniversityPhoenixAZ 85004USA Biodesign Inst.t.t. Arizona State UniversityTempeAZ 85281USA Depart.ent.of Elect.ical Engineer and Comput.r Science Christopher S.Bond Life Sciences CenterUniversity of MissouriColumbiaMO 65211USA

Large language model(LLM)-based chat.ot. like Chat.Generat.ve Pre-t.ained t.ansformer(Chat.Pt.,equipped wit. broad biological knowledge[1],have demonst.at.d an impressive capabilit. for bioinformat.cs coding[2].When given well-craft.d inst.uct.ons,t.ese chat.ot. hold t.e pot.nt.al t. significant.y augment.bioinformat.cs educat.on and research[3,4].However,opport.nit.es ent.il bot. rewards and *** comment.ry explores t.e challenges of using chat.ot. in bioinformat.cs and proposes st.at.gies t. manage t.e associat.d risks while maximizing t.e benefit..

关键词： equipped while educat.on