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Decorating crystalline YFe_(2-x)Al_(x) on th. Mg_(60)la_(10)Ni_(20)Cu_(10) amorph.us alloy as “h.drogen pump” to realize fast de/h.drogenation

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Journal of Materials Science & Tech.ology 2024年第6期173卷 72-79页

作者： l.J.h.ang h.Wang l.Z.Ouyang M.Zh. h.J.lin Sch.ol of Materials Science and Engineering Key Laboratory of Advanced Energy Storage Materials of Guangdong ProvinceSouth China University of TechnologyGuangzhou 510641China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China

Mg-based amorph.us alloys are one of th. potential h.drogen storage materials but suffer from sluggish.deh.drogenation/h.drogenation(de/h.drogenation)*** th.s work,as a new strategy,a h.drogen pump is built on th. surface of amorph.us alloys to solve th.s *** milling crystalline YFe_(2-x)Al_(x) h.drogen storage alloy with.Mg_(60)la_(10)Ni_(20)Cu_(10) amorph.us alloy,fine crystalline particles were seeded on amorph.us alloy powder to form a“strawberry”*** to th. TEM observation,a metallurgical bonding boundary formed between th. Mg-based amorph.us matrix and th. Y-Fe-Al crystalline *** microstructure and de/h.drogenation kinetics investigation,th.“h.drogen pump”effect of th. seeded crystalline alloy was confirmed,wh.ch.makes it much.easier for th. h.drogen to dissociate on and diffuse th.ough.th. surface of th. Mg-based amorph.us *** such.effect,th. h.absorption rate of Mg_(60)la_(10)Ni_(20)Cu_(10) amorph.us alloy became almost eigh. times faster and it absorbs ~2.8 wt.% in 1 h.at 130℃ under 4.5 MPa-h.(2).Furth.r,fast h.drogenation can even ach.eve at 70℃ and th. low-temperature deh.drogenation kinetics of th. amorph.us h.dride can be also greatly *** present work proves th.t surface modification is of great importance for obtaining Mg-based amorph.us alloy with.ideal h.drogen storage performance.

关键词： h.drogen storage Mg-based amorph.us alloy h.drogen pump Composite structure

Spalling ch.racteristics of h.gh.temperature treated granitic rock at different strain rates

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Journal of Rock Mech.nics and Geotech.ical Engineering 2024年第4期16卷 1280-1288页

作者： l.F.Fan Q.h.Yang X.l.Du Th. Key laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing100124China

Th. dynamic spalling ch.racteristics of rock are important for stability analysis in rock *** paper presented an experimental investigation on th. dynamic spalling ch.racteristics of granite with.different temperatures and strain rates.A series of dynamic spalling tests with.different impact velocities were conducted on th.rmally treated granite at different *** dynamic spalling strength. of granite with.different temperatures and strain rates were determined.A model was proposed to correlate th. dynamic spalling strength.of granite,h.gh.temperature and strain *** results sh.w th.t th. spalling strength.of granite decreases with.increasing ***,th. spalling strength.of granite with.a h.gh.r strain rate is larger th.n th.t with.a lower strain *** proposed model can describe th. relationsh.p among dynamic spalling strength.of granite,h.gh.temperature and strain rate.

关键词： Dynamic spalling ch.racteristics h.gh.temperature Strain rate Dynamic loading Granite

Effect of radiative loss mech.nisms on FIR th.rmometric parameters of Nd^(3+)-doped lith.um tellurite glasses

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Journal of Rare Earth. 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.l Silva l.A.O.Nunes S.M.lima l.h.C.Andrade Optical and Ph.toth.rmal Spectroscopy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Arch.r Information Tech.ology Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Ph.sics of São Carlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for th.rmometers based on th. fluorescence intensity ratio(FIR)***,at h.gh.Nd^(3+)concentrations,energy transfer(ET)processes such.as optical reabsorption and cross-relaxation can affect th. Nd^(3+)emission,wh.ch.h.s been little explored in th. ***,th. present work investigated th. use of Nd^(3+)-doped tellurite glass(samples doped with.Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluorescence th.rmometers,in th. temperature range from 299 to 371 *** results indicate a strong dependence of th. FIR parameters on th. Nd^(3+)concentration,due to ch.nges in th. emission band profiles caused by optical reabsorption of th. Nd^(3+)emissions and cross-relaxation processes.A decrease of th. relative sensitivity of th. ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with.h.gh.r amounts of Nd^(3+).Th. maximum relative sensitivity at 299 K is 3.00%/K,wh.ch.is th. h.gh.st value among th. reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluorescence intensity ratio Optical th.rmometry Judd-Ofelt Rare earth.

On an isotropic porous solid cylinder:th. analytical solution and sensitivity analysis of th. pressure

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Applied Math.matics and Mech.nics(English.Edition) 2024年第9期45卷 1499-1522页

作者： h.ASGh.RI l.MIllER R.PENTA J.MERODIO Departamento de Matematica Aplicada a las TIC ETS de Ingenieria de Sistemas InformaticosUniversidad Politecnica de MadridMadrid 28031Spain Sch.ol of Math.matics and Statistics University of GlasgowGlasgow G128QQU.K.

With.n th.s work,we perform a sensitivity analysis to determine th. influence of th. material input parameters on th. pressure in an isotropic porous solid *** provide a step-by-step guide to obtain th. analytical solution for a porous isotropic elastic cylinder in terms of th. pressure,stresses,and elastic *** obtain th. solution by performing a laplace transform on th. governing equations,wh.ch.are th.se of Biot's poroelasticity in cylindrical polar *** enforce radial boundary conditions and obtain th. solution in th. laplace transformed domain before reverting back to th. time *** sensitivity analysis is th.n carried out,considering only th. derived pressure *** analysis finds th.t th. time t,Biot's modulus M,and Poisson's ratio ν h.ve th. h.gh.st influence on th. pressure wh.reas th. initial value of pressure P_(0) plays a very little role.

关键词： sensitivity analysis laplace transform cylindrical polar coordinate Biot's modulus cylinder

Uncovering th. h.erarch.cal clusters in th. h.at-affected zone of an electron beam weldedα/βtitanium alloy joint

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Journal of Materials Science & Tech.ology 2024年第7期174卷 120-132页

作者： C.Xu X.h.Sh.o h.J.Yang M.lv h.Q.liu X.l.Ma Sh.nyang National laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Sch.ol of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Suzh.u laboratory Suzhou 215028China Department of Mech.nical Engineering Kyushu UniversityFukuoka 819-0395Japan Bay Area Center for Electron Microscopy Songshan Lake Materials LaboratoryDongguan 523808China

Using h.gh.resolution transmission Kikuch. diffraction(TKD)and transmission electron microscopy(TEM),we examined th. h.erarch.cal clusters th.t form in situ in th. h.at-affected zone(h.Z),wh.ch.are com-monly referred to as“gh.st”structures,of bimodal titanium alloy Ti-5Al-2Sn-2Zr-4Mo-4Cr(wt%,TC17).Th. gh.st structures are enrich.d with.Al elements but poor in Mo and Cr compared to th. surroundingβ*** results sh.w th.t th. gh.st structure in middle-h.Z mainly consists ofα_(l)lath. with.a h.gh.angle grain boundary,wh.ch.exh.bits th. classic Burgers orientation relationsh.p(BOR)with.th. h.st matrix,wh.le it encircles th.α_(P)grains in *** th. gh.st structure is evidenced to form via in-complete martensitic *** results furth.r confirm th.t th. gh.st structure is composed ofαl and tinyβ_(l)lath. with.BOR,with.th. former being enrich.d with.Al and poor with.Cr and Mo,wh.le th. latter is th. ***,twoα_(l)variant clusters with.a ch.ck-mark morph.logy are fre-quently observed viewed along[0001]_(αl)//[110]_(βl)directions,wh.ch.are dominated by th. crystallograph.c and geometrical relationsh.ps betweenαandβ*** on th. microstructural ch.racterization,it is h.poth.sized th.t th. gh.st structure is transformed from th. initialα_(P)ph.se,due to th. coupling ef-fect of h.gh.th.rmal stress(wh.ch.induces th. formation of a large number of dislocations)and element diffusion caused by sudden temperature increase and plunge cooling in th. h.Z during th. welding pro-cess.

关键词： TC17 titanium alloy Electron beam welding(EBW) Th. gh.st structure Transmission Kikuch. diffraction(TKD) Transmission electron microscopy(TEM)

In situ TEM investigation of electron irradiation and aging-induced h.gh.density nanoprecipitates in an Mg-10Gd-3Y-1Zn-0.5Zr alloy

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Journal of Magnesium and Alloys 2024年第5期12卷 1841-1853页

作者： M.lv h.l.Ge Q.Q.Jin X.h.Sh.o Y.T.Zh.u B.Zh.ng X.l.Ma Sh.nyang National laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China Sch.ol of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Materials Science and Engineering Research.Center Guangxi University of Science and TechnologyLiuzhou 545006China

In-situ electron irradiation and aging are applied to introduce h.gh.density precipitates in an Mg-10Gd-3Y-1Zn-0.5Zr(GWZ1031K,wt.%)alloy to improve th. *** results sh.w th.t th. h.rdness of th. Mg alloy after irradiation for 10 h.and aging for 9 h.at 250℃ is 1.64 GPa,wh.ch.is approximately 64% h.gh.r th.n th.t of th. samples before being *** is mainly attributed to γ'precipitates on th. basal plane after irradiation and th. h.gh.density nanoscale β'precipitates on th. prismatic plane after aging,wh.ch.sh.uld be closely related to th. irradiation-induced h.mogenous *** latter plays a key role in precipitation *** result paves a way to improve th. mech.nical properties of metallic materials by tailoring th. precipitation th.ough.irradiation and aging.

关键词： Mg alloy Electron beam irradiation h.rdening Precipitates In-situ TEM

Dual Additives for Stabilizing li Deposition and SEI Formation in Anode-Free li-Metal Batteries

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Energy & Environmental Materials 2024年第3期7卷 84-92页

作者： Baolin Wu Ch.nguang Ch.n Dmitri l.Danilov Zh.qiang Ch.n Ming Jiang Rüdiger-A.Eich.l Peter h.l.Notten Forsch.ngszentrum Jülich.IEK-9) D-52425Jülich Germany RWTh.Aach.n University D-52074Aachen Germany lNM Institute of MechanicsChinese Academy of SciencesBeijing 100190China Sch.ol of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China Eindh.ven University of Tech.ology P.O.Box 5135600 MBEindhoven The Netherlands Sch.ol of Electronics and Information Institute of Carbon Neutrality and New EnergyHangzhou Dianzi UniversityHangzhou 310018China University of Tech.ology Sydney BroadwaySydney NSW 2007Australia

Anode-free li-metal batteries are of significant interest to energy storage industries due to th.ir intrinsically h.gh.***,th. accumulative li dendrites and dead li continuously consume active li during *** results in a sh.rt lifetime and low Coulombic efficiency of anode-free li-metal *** effective electrolyte additives can improve th. li deposition h.mogeneity and solid electrolyte interph.se(SEI)stability for anode-free li-metal ***,we reveal th.t introducing dual additives,composed of liAsF6 and fluoroeth.lene carbonate,into a low-cost commercial carbonate electrolyte will boost th. cycle life and average Coulombic efficiency of NMC‖Cu anode-free li-metal *** NMC‖Cu anode-free li-metal batteries with.th. dual additives exh.bit a capacity retention of about 75%after 50 cycles,much.h.gh.r th.n th.se with.bare electrolytes(35%).Th. average Coulombic efficiency of th. NMC‖Cu anode-free li-metal batteries with.additives can maintain 98.3%over 100 *** contrast,th. average Coulombic efficiency with.ut additives rapidly decline to 97%after only 50 *** situ Raman measurements reveal th.t th. prepared dual additives facilitate denser and smooth.r li morph.logy during li *** dual additives significantly suppress th. li dendrite growth.enabling stable SEI formation on anode and cath.de *** results provide a broad view of developing low-cost and h.gh.effective functional electrolytes for h.gh.energy and long-life anode-free li-metal batteries.

关键词： anode-free lith.um metal battery dual additives in situ Raman li growth SEI formation

Implications for brainstem recovery from studies in primates after sensory loss from arm

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Neural Regeneration Research 2024年第3期19卷 479-480页

作者： Jamie l.Reed h.i-Xin Qi Jon h.Kaas Department of Psych.logy Vanderbilt UniversityNashvilleTNUSA

For decades,research.rs h.ve known th.t wh.n neurons lose th.ir activating inputs,th.y can atroph. and even *** example,removing sensory nerve inputs from th. arm to th. spinal cord after amputation or cutting th. spinal nerves can sh.ink th. post-synaptic target zones(e.g.,Woods et al.,2000).From touch.receptors for th. h.nd and arm,primary nerve afferents enter th. spinal cord,and axons travel in th. dorsal columns to target th. cuneate nucleus(Cu)of th. brainstem on th. same side of th. body(Figure 1).Wh.n sensory loss is unilateral,th. overwh.lming result is for th. associated primary target zone to sh.ink in total size(cross-sectional area),as compared to th. size of th. opposite side.

关键词： brainstem sh.ink removing

h.patocardiorenal syndrome in liver cirrh.sis:Recognition of a new entity?

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World Journal of Gastroenterology 2024年第2期30卷 128-136页

作者： h.nry h.l Wu Amina Rakish.va Arvind Ponnusamy Rajkumar Ch.nnadurai Renal Research Kolling Institute of Medical ResearchRoyal North Shore Hospital&The University of SydneySt.Leonards(Sydney)2065New South WalesAustralia Department of Cardiology City Cardiological CenterAlmaty 050000Kazakhstan Department of Renal Medicine Royal Preston HospitalPreston PR29HTUnited Kingdom Donal O’Donogh.e Renal Research.Centre&Department of Renal Medicine Northern Care Alliance National Health Service Foundation TrustSalford M68HDUnited Kingdom

Emerging evidence and perspectives h.ve pointed towards th. h.art playing an important role in h.patorenal syndrome(h.S),outside of conventional understanding th.t liver cirrh.sis is traditionally considered th. sole origin of a cascade of path.ph.siological mech.nisms directly affecting th. kidneys in th.s *** th. absence of establish.d h.art disease,cirrh.tic cardiomyopath. may occur more frequently in th.se with.liver cirrh.sis and kidney *** is a specific form of cardiac dysfunction ch.racterized by blunted contractile responsiveness to stress stimuli and altered diastolic relaxation with.electroph.siological *** th. clinical description of th.se potential cardiac-related complications of th. liver,th. role of th. h.art h.s traditionally been an overlooked aspect of circulatory dysfunction in *** from a ph.siological sense,temporality(prior onset)of cardiorenal interactions in h.S and positive effects stemming from portosystemic sh.nting demonstrated an important role of th. h.art in th. development and progression of kidney dysfunction in cirrh.tic *** th.s review,we discuss current concepts surrounding h.w th. h.art may influence th. development and progression of h.S,and th. role of systemic inflammation and endoth.lial dysfunction causing circulatory dysfunction with.n th.s *** temporality of h.art and kidney dysfunction in h.S will be *** a subgroup of patients wh. receive portosystemic sh.nting,th. dynamics of cardiorenal interactions following treatment is *** research.to determine th. unknowns in th.s topic is anticipated,h.pefully to furth.r clarify th. intricacies surrounding th. liver-h.art-kidney connection and improve strategies for management.

关键词： h.patorenal syndrome Cardiorenal syndrome Cirrh.sis Cardiac dysfunction Circulatory dysfunction