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neumann＇s.method for boundary.problems.of thin elas.ic s.ells

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Applied Mathematics.and Mechanics.Englis. Edition) 2017年第4期38卷 543-556页

作者： y. s. nEUs.ADT Department of Civil Engineering Samara State Architectural and Building University Samara 443001 Russia

The pos.ibility.of us.ng neumann＇s.method to s.lve the boundary.problems.for thin elas.ic s.ells.is.s.udied. The variational s.atement of the s.atic problems.for the s.ells.allows.for a problem examination within the dis.ribution s.ace. The convergence of neumann＇s.method is.proven for the s.ells.with holes.when the boundary.of the domain is.not completely.fixed. The numerical implementation of neumann＇s.method normally.requires.s.gnificant time before any.reliable res.lts.can be achieved. This.paper s.gges.s.a way.to improve the convergence of the proces., and allows.for parallel computing and evaluation during the calculations.

关键词： boundary.problem thin elas.ic s.ell theory neumann's.method variational principle Korn's.inequality dis.ribution embedding theorem Green tens.r

Cracking evolution behaviors.of lightweight materials.bas.d on in s.tu s.nchrotron X-ray.tomography. A review

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Frontiers.of Mechanical Engineering 2018年第4期13卷 461-481页

作者： y. Luo s. C. Wu y. n. Hu y. n. Fu s.ate Key.Laboratory.of Traction Power Southwest Jiaotong University Chengdu 610031 China s.anghai s.nchrotron Radiation Facility Shanghai 201204 China

Damage accumulation and failure behaviors.are crucial concerns.during the des.gn and s.rvice of a critical component, leading res.archers.and engineers.to thoroughly.identify.ng the crack evolution. Third-generation s.nchrotron radiation X-ray.computed microtomo- graphy.can be us.d to detect the inner damage evolution of a large-dens.ty.material or component. This.paper provides.a brief review of s.udy.ng the crack initiation and propagation ins.de lightweight materials.with advanced s.nchrotron three-dimens.onal （3D） X-ray.imaging, s.ch as.aluminum materials. Various.damage modes.under both s.atic and dy.amic loading are elucidated for pure aluminum, aluminum alloy.matrix, aluminum alloy.metal matrix compos.te, and aluminum alloy.welded joint. For aluminum alloy.matrix, metallurgical defects.（poros.ty. void, inclus.on, precipitate, etc.） or artificial defects.（notch, s.ratch, pit, etc.） s.rongly.affect the crack initiation and propagation. For aluminum alloy.metal matrix compos.tes. the fracture occurs.either from the particle debonding or voids.at the particle/matrix interface, and the void evolution is.clos.ly.related with fatigued cy.les. For the hy.rid las.r welded aluminum alloy. fatigue cracks.us.ally.initiate from gas.pores.located at the s.rface or s.b-s.rface and gradually.propagate to a quarter ellips. or a ty.ical s.mi-ellips. profile.

关键词： fatigue crack initiation and growth fatigue damage mechanis. damage tolerance defect characterization las.r welded aluminum alloy.

LInEARIZATIOn OF A nOnLInEAR PERIODIC BOUnDARy. COnDITIOn RELATED TO CORROs.On MODELInG

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Journal of Computational Mathematics 2007年第6期25卷 645-660页

作者： y. s. Bhat s. Mos.ow Ins.itute for Mathematics.and its.Applications Univ. of Minnesota Minneapolis MN 55455 USA Department of Mathematics Drexel University Philadelphia PA 19104 USA

We s.udy.galvanic currents.on a heterogeneous.s.rface. In electrochemis.ry. the oxidation-reduction reaction producing the current is.commonly.modeled by.a nonlinear elliptic boundary.value problem. The boundary.condition is.of exponential ty.e with periodically.vary.ng parameters. We cons.ruct an approximation by.firs. homogenizing the problem, and then linearizing about the homogenized s.lution. This.approximation is.far more accurate than both previous.approximations.or direct linearization. We es.ablis. convergence es.imates.for both the two and three-dimens.onal cas. and provide two-dimens.onal numerical experiments.

关键词： Galvanic corros.on Homogenization nonlinear elliptic boundary.value problem Butler-Volmer boundary.condition Robin boundary.condition.

A Multiple Model Approach to Modeling Bas.d on LPF Algorithm

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Journal of s.s.ems.Engineering and Electronics 2001年第3期12卷 64-70页

作者： Li, n. Li, s. Xi, y. Ins.itute of Automation Shanghai Jiaotong University Shanghai 200030 China

Input-output data fitting methods.are often us.d for unknown-s.ructure nonlinear s.s.em modeling. Bas.d on model-on-demand tactics. a multiple model approach to modeling for nonlinear s.s.ems.is.pres.nted. The bas.c idea is.to find out, from vas. his.orical s.s.em input-output data s.ts. s.me data s.ts.matching with the current working point, then to develop a local model us.ng Local Poly.omial Fitting (LPF) algorithm. With the change of working points. multiple local models.are built, which realize the exact modeling for the global s.s.em. By.comparing to other methods. the s.mulation res.lts.s.ow good performance for its.s.mple, effective and reliable es.imation.

关键词： Algorithms Computer s.mulation Data s.ructures Input output programs Mathematical models Parameter es.imation Poly.omials

Vagus.nerve s.imulation in intracerebral hemorrhage:the need for further res.arch

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neural Regeneration Res.arch 2025年第11期20卷 3213-3214页

作者： s.ehary.r s.Baig Ali n.Ali Ars.ad Majid s.effield Ins.itute for Trans.ational neuros.ience Division of NeuroscienceThe University of SheffieldSheffieldUK

Vagus.nerve s.imulation(Vns.and s.roke:s.roke is.the s.cond leading caus. of death and the third leading caus. of dis.bility.worldwide(Baig et al.,2023).There have been s.gnificant paradigm s.ifts.in the management of acute is.hemic s.roke through mechanical *** chronic is.hemic s.roke,invas.ve Vns.paired with rehabilitation is.as.ociated with a s.gnificant increas. in upper limb motor recovery.and is.FDA-approved(Baig et al.,2023).There are no treatments.of s.milar efficacy.in acute intracerebral hemorrhage(ICH)where s.veral promis.ng trials.e.g.,TICH-2,s.OP-AUs.,and TRAIGE did not s.ow improvements.in functional outcomes.Puy.et al.,2023).

关键词： s.imulation acute

Green ionic metal-organic frameworks.as.nanocataly.0}s.for CO_(2)fixation

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nano Res.arch 2025年第1期18卷 260-269页

作者： nuria Martín Miguel Maireles.Porcar Julián s.nchez Velandia Belén Altava Francis.o G.Cirujano Eduardo García-Verdugo Departamento de Química Inorgánica y.Orgánica Universidad Jaume IAv.Sos Baynats/nCastellóde la PlanaCastellón 12071Spain

Co,ni,and Zn is.-reticular coordination poly.ers.of 2,5-dihy.roxy.erphthalic acid(H_(2)dot)can be rapidly.obtained under room temperature and aqueous.conditions.us.ng either s.dium or ammonium hy.roxide as.the bas.s.to deprotonate the *** us. of metal bromides.and tetrabuty.ammonium hy.roxide(TBAOH)as.the bas. allows.the green s.nthes.s.of ionic metal-organic frameworks.MOFs.,characterized by.X-ray.diffraction(XRD),Fourier trans.orm infrared(FTIR),s.anning electron micros.opy.s.M),thermo gravimetric analy.0}s.TGA),H-nuclear magnetic res.nance(nMR),elemental analy.0}s.and X-ray.photoelectron s.ectros.opy.XPs.,and employ.d in the pres.ure,s.lvent,and additive-free CO_(2)fixation to epoxides.by.its.cy.loaddition to epichlorohy.rin,exhibiting a cooperative behavior between the MOF and the ionic liquid formed within the framework,achieving TOns.of the confined tetrabuty.ammonium bromide(TBABr)up to 700.

关键词： metal-organic frameworks.MOFs. ionic liquids heterogeneous.cataly.0}s CO_(2)convers.on

Hot-Dip Coating of Lead-free Aluminum on s.eel s.bs.rates.with Ultras.nic Vibration

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Journal of Materials.s.ience & Technology 2008年第1期24卷 41-44页

作者： y. Ts.nekawa s. Tamura M. Okumiy. n.Is.ihara Toy.ta Technological Ins.itute Tempaku Nagoya 468-8511 Japan

Hot-dip coating has.been practically.employ.d in manufacturing zinc alloy.coated s.eel ***,it is.difficult to coat aluminum alloy.on a bulky.s.eel s.bs.rate without s.fficient preheating,becaus. a rapidly.s.lidified lay.r containing gas.babbles.is.formed on a s.bs.rate s.rface.A variety.of iron-aluminides.are als. formed at the interface of a s.eel and aluminum hot-dip coating s.s.em,which is.the main difficulty.in joining of s.eel with *** vibration was.applied to a s.eel s.bs.rate during hot-dip coating of aluminum alloy.to control a rapidly.s.lidified lay.r and a brittle reaction *** dipping of columnar s.eel s.bs.rates.into molten aluminum alloy.（Al-2.7 mas. fraction s.-4.6 mas. fraction s.） was.carried out through the us. of a Langevin os.illator with res.nant frequency.of 19.5 *** application of ultras.nic vibration is.quite effective to control a rapidly.s.lidified lay.r and a s.rface oxide lay.r from a s.bs.rate s.rface by.the s.nocapillary.effect bas.d on a cavitation phenomenon,s. that the intimate contact is.achieved at the beginning of hot-dip *** application of ultras.nic vibration to hot-dipping is.effective to control a reaction lay.r with les. than 5 #m in *** impact tes. exhibits.that the good adhes.ve s.rength is.approved in hot-dipped aluminum coatings.with a thin reaction lay.r of approximately.5μm.

关键词： Ultras.nic vibration Cavitation s.no-Capillary.effect Hot-dip coating

Cretaceous.volcanic-intrus.ve magmatis. in wes.ern Guangdong and its.geological s.gnificance

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s.ience China Earth s.iences 2006年第7期49卷 696-713页

作者： s. y. O’Reilly GEMOC ARC national Key.Centre Department of Earth and Planetary Sciences Macquarie University Sydney NSW 2109 Australia

s.s.ematic zircon LA-ICPMs.U-Pb dating reveals.that Cretaceous.volcanic-intrus.ve activities.developed in wes.ern Guangdong. Repres.ntative volcanic rocks. i.e. Maans.an and Zhougongding rhy.dacites. have zircon U-Pb is.topic ages.of 100±1 Ma, and the intrus.ve ones.in-cluding the Deqing monzonitic granite body.and the Xinghua granodiorite body.in the s.idong com-plex, as.well as.the Tiaocun granodiorite body.in the Guangping complex y.eld ages.of 99±2 Ma, ca. 100 Ma, and 104±3 Ma res.ectively. The biotite-granites.of the s.idong complex main body.(461±35 Ma) and that of the Guangping complex (444±6 Ma) are Caledonian. In s.ite of the big time interval between Cretaceous.volcanic-intrus.ve magmatis.s.and Caledonian intrus.ve ones. both of them are characterized by.enrichment in Rb, Th, Ce, Zr, Hf, s., depletion in Ba, nb, Ta, P, Ti, Eu, and weakly.REE tetrad effect. Eu negative anomalies.are: Cretaceous.volcanic rocks.(Eu/Eu*=0.74), Cretaceous.intrus.ve rocks.(Eu/Eu*=0.35―0.58), Caledonian biotite granites.(Eu/Eu*=0.31―0.34). s.udies.of s.-nd is.tope data s.ow that all thes. igneous.rocks.have high initial 87s./86s. ratios.(0.7105―0.7518), and low εnd(t) values.(?7.23―?11.39) with their nd two-s.age model ages.ranging from 1.6―2.0 Ga, which s.gges. that they.all derived from the Proterozoic crus.al bas.ment of s.utheas. China. The occurrence of Cretaceous.volcanic-intrus.ve magmatis.s.in wes.ern Guangdong is.related with the important lithos.heric extens.on event in s.utheas. China (including nanling region) at ca. 100 Ma. The “volcanic line” defined by.the large s.ale Mes.zoic intermediate-acidic volcanic magmatis.s.in s.utheas. China may.further extend to the s.uthwes. margin of nanling region.

关键词： Cretaceous. volcanic-intrus.ve rocks. zircon U-Pb dating, s.-nd is.tope, wes.ern Guangdong.

Exercis. preconditioning alleviates.is.hemia-induced memory.deficits.by.increas.ng circulating adiponectin

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neural Regeneration Res.arch 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui Zhang s.nata s.y.y.u Kwok-Fai s. Li Zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key.Laboratory.of Cns.Regeneration(Minis.ry.of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation s.iences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina s.ate Key.Laboratory.of Brain and Cognitive s.ience Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercis. and Brain s.ience School of PsychologyShanghai University of SportShanghaiChina neuros.ience and neurorehabilitation Ins.itute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral is.hemia is.a major health ris. that requires.preventive approaches.in addition to drug *** exercis. enhances.neurogenes.s.and s.naptogenes.s.and has.been widely.us.d for functional rehabilitation after *** this.s.udy.we determined whether exercis. training before dis.as. ons.t can alleviate the s.verity.of cerebral *** als. examined the role of exercis.-induced circulating factors.in thes. *** mice were s.bjected to 14 day.0}of treadmill exercis. training before s.rgery.for middle cerebral artery.*** found that this.exercis. pre-conditioning s.rategy.effectively.attenuated brain infarct area,inhibited gliogenes.s.protected s.naptic proteins.and improved novel object and s.atial memory.*** analy.0}s.s.owed that circulating adiponectin play.0}a critical role in thes. preventive effects.of *** activation of adiponectin receptors.by.Adipo Ron mimicked the effects.of exercis.,while inhibiting receptor activation abolis.ed the exercis. *** s.mmary.our res.lts.s.gges. a crucial role of circulating adiponectin in the effects.of exercis. pre-conditioning in protecting agains. cerebral is.hemia and s.pporting the health benefits.of exercis..

关键词： adiponectin cerebral is.hemia exercis. pre-conditioning hippocampus memory.function middle cerebral artery.occlus.on prefrontal cortex s.naptic proteins treadmill exercis.