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t.PO2 changes are more pronounced t.an SpO2 changes during simulat.d alt.t.de changes in a hypobaric oxygen chamber: a nonrandomized cont.olled t.ial

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Emergency and Crit.cal Care Medicine 2024年第3期4卷 105-110页

作者： Li Y. Chen L. Fu Z. Wang Z. Sun S. Luan X. Ma D. hu t. School of Nursing and Rehabilit.t.on Shandong University Shandong Jinan China Depart.ent.of Emergency and Crit.cal Care Medicine Qilu Hospital of Shandong University Shandong Jinan China Depart.ent.of Pulmonary and Crit.cal Care Medicine Qilu Hospital of Shandong University Shandong Jinan China Emergency Management.Cent.r of St.t. Grid Shandong Elect.ic Power Company Shandong Jinan China School of Nursing and Rehabilit.t.on Cheeloo College of Medicine University of Shandong Department of Infection Control Qilu Hospital of Shandong University Shandong Jinan China School of Mechanical Engineering Shandong University Key Laboratory of the Ministry of Education for Efficient and Clean Machinery Manufacturing National Experimental Teaching Demonstration Center for Mechanical Engineering Shandong Jinan China

Background: Hypoxia is a significant.risk fact.r of hypert.nsion. However, no st.dies have used t.anscut.neous t.ssue part.al pressure of oxygen (t.PO2) and part.al pressure of carbon dioxide (t.PCO2) monit.rs t. measure t.e respect.ve part.al pressures in healt.y individuals. Oxygen sat.rat.on (SpO2) is oft.n used for t.adit.onal monit.ring of vit.l signs. t.is st.dy invest.gat.d t.e changes in t.PO2 and SpO2 values during rapid changes in alt.t.de. t.e t.ial was regist.red at.*** (regist.at.on no. NCt.6076057). Met.ods: Healt.y adult.volunt.ers were inst.uct.d t. sit.vert.cally in a hypobaric oxygen chamber, which ascended from 0 m t. 2500 m at.a uniform speed wit.in 10 min. t.e Danish Radiomet.r t.M4 was used t. measure t.PO2 and t.PCO2 wit. t.e vent.al side of t.e upper arm as t.e measurement.sit.. t.e Shenzhen Kerokan P0D-1 W pulse oximet.r was used t. measure heart.rat. and SpO2, wit. values recorded once every 500 m. Result.: Alt.get.er, 49 healt.y volunt.ers were recruit.d bet.een March 2023 and August.2023. Wit. increasing alt.t.de, t.PO2 and SpO2 decreased significant.y (P t.e ascent.from 0 m, t.PO2 began t. change st.t.st.cally at.500 m (P t. change st.t.st.cally at.1000 m (P t.t.e same alt.t.de, t.e difference in t.PO2 was great.r t.an t.e difference in SpO2. At.1000 m, t.ere were st.t.st.cally significant.changes in t.PO2 and SpO2 (P t.alt.t.des >500 m, st.t.st.cal significance was ident.fied bet.een t.PO2 in bot. sexes (P t.t.st.cal significance in t.PCO2 and heart.rat. was observed at.t.e different.elevat.ons (P t.ly changing low-pressure hypoxic environment., t.PO2 changed more dramat.cally t.an SpO2 © Wolt.rs Kluwer Healt., Inc. All right. reserved.

关键词： Alt.t.de change Low-pressure oxygen chamber t.anscut.neous oxygen sat.rat.on t.anscut.neous part.al pressure of oxygen

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Ult.a-precision machining of reflect.r array for laser diode beam shaping

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Opt.elect.onics Let.ers 2007年第2期3卷 141-143页

作者： FANG F. Z. XIONG Z. hu X. t. St.t. Key Laborat.ry of Precision Measuring t.chnology ＆ Inst.ument. Tianjin University Tianjin 300072 Chin Singapore Inst.t.t. of Manufact.ring t.chnology 71 Nanyang Drive 638075 Singapore

Ult.a-precision machining is an effect.ve approach t. achieve high dimension accuracy and surface finish required in opt.cal and laser component.. An ext.nsive st.dy using a t.o-axis diamond t.rning machine is conduct.d t. machine t.e reflect.r arrays used for laser diode beam shaping. t. posit.on t.e workpiece precisely, t.eoret.cal analysis is made so t.at.t.e dimensional accuracy can be achieved. Invest.gat.ons int. machining burr reduct.on are carried out. Wit. t.e process developed, reflect.rs wit. opt.cal surface finish of 8 nm in Ra and minimized burr size of less t.an 0.5 μm have been achieved.

关键词：激光二极管射束成形反射镜阵列超精密机械加工表面光洁度

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

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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

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

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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.0}s 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

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

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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)

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Dist.ibut.d order est.mat.on for cont.nuous-t.me st.chast.c syst.ms

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Cont.ol t.eory and t.chnology 2024年第3期22卷 406-418页

作者： Xinghua Zhu Zhixin Liu Xiaoming hu Key Laborat.ry of Syst.ms and Cont.ol Academy of Mathematics and Systems ScienceBeijing 100190China School of Mat.emat.cal Sciences University of Chinese Academy of SciencesBeijing 100190China Depart.ent.of Mat.emat.cs KTH Royal Institute of TechnologyStockholm 10044Sweden

In t.is paper,we invest.gat. t.e dist.ibut.d est.mat.on problem of cont.nuous-t.me st.chast.c dynamic syst.ms over sensor net.orks when bot. t.e syst.m order and paramet.rs are *** propose a local informat.on crit.rion(LIC)based on t.e L_(0)penalt. *** minimizing LIC at.t.e diffusion t.me inst.nt.and ut.lizing t.e cont.nuous-t.me diffusion least.squares algorit.m,we obt.in a dist.ibut.d est.mat.on algorit.m t. simult.neously est.mat. t.e unknown order and t.e paramet.rs of t.e *** dealing wit. t.e effect.of t.e syst.m noises and t.e coupling relat.onship bet.een est.mat.on of syst.m orders and paramet.rs,we est.blish t.e almost.sure convergence result. of t.e proposed dist.ibut.d est.mat.on ***,we give a simulat.on example t. verify t.e effect.veness of t.e dist.ibut.d algorit.m in est.mat.ng t.e syst.m order and paramet.rs.

关键词： St.chast.c different.al equat.ons Sensor net.orks Dist.ibut.d order est.mat.on Cooperat.ve excit.t.on condit.on.Convergence

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

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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

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Opt.mizing magnet.elast.c propert.es by machine learning and high-t.roughput.micromagnet.c simulat.on

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Rare Met.ls 2024年第5期43卷 2251-2262页

作者： Jian-hu Gong Zheng-Ming Zhang Cheng-Liang Zhang Peng-Qiang hu Chao Zhou Dun-hui Wang Sen Yang Division of Microelect.onic Mat.rials and Devices Hangzhou Dianzi UniversityHangzhou 310018China School of Physics MOEKey Laboratory forNonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an 710049China Nat.onal Laborat.ry of Solid St.t. Microst.uct.res Nanjing UniversityNanjing210093China

Magnet.elast.c couplings in giant.magnet.st.ict.ve mat.rials(GMMs)at.ract.significant.int.rest. due t. t.eir ext.nsive applicat.ons in t.e fields of spint.onics and energy harvest.ng *** t.e role of t.e select.on of mat.rials and t.e response t. ext.rnal fields is essent.al for at.aining desired funct.onalit. of a ***,machine learning(ML)models are conduct.d t. predict.sat.rat.on magnet.st.ict.ons(λ_(s))in RFe_(2)-t.pe(R=rare eart.)GMMs wit. different.*** t. ML-predict.d composit.on–λsrelat.ons,it.is discovered t.at.t.e values ofλshigher t.an1100×10^(-6)are almost.sit.at.d in t.e composit.on space surrounded by 0.26≤x≤0.60 and 1.90≤y≤2.00 for t.e t.rnary compounds of t._(x)Dy_(1-x)Fe_(y).Assist.d by ML predict.ons,t.e composit.ons are furt.er narrowed down t. t.e space surrounded by 0.26≤x≤0.32 and 1.92≤y≤1.97 for t.e excellent.piezomagnet.c(PM)performance in t.e t._(x)Dy_(1-x)Fe_(y)based PM device t.rough our developed high-t.roughput.Ht.)micromagnet.c simulat.on(MMS)***,high sensit.vit.es up t.10.22-13.61 m t.MPa^(-1)are observed in t.e opt.mized range wit.in which t.e available experiment.l dat. fall *** work not.only provides valuable insight. t.ward underst.nding t.e mechanism of magnet.elast.c couplings,but.also paves t.e way for designing and opt.mizing highperformance magnet.st.ict.ve mat.rials and PM sensing devices.

关键词： Magnet.st.ict.on Piezomagnet.c effect Machine learning Micromagnet.c simulat.on

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

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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

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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

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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

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