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Chebyshev polynomial-based.Ritz method.for thermal buckling and.free vibration behaviors of metal foam beams

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Applied.Mathematics and.Mechanics(English Ed.tion) 2024年第5期45卷 891-910页

作者： n.d.nGUYEn T.n.nGUYEn Faculty of Civil Engineering Ho Chi Minh City University of Technology and EducationHo Chi Minh City 71309Viet Nam Faculty of Engineering and.Technology Kien Giang UniversityChau Thanh 92000Viet Nam

This stud. presents the Chebyshev polynomials-based.Ritz method.to examine the thermal buckling and.free vibration characteristics of metal foam *** analyses includ. three mod.ls for porosity d.stribution and.two scenarios for thermal *** material properties are assessed.und.r two cond.tions,i.e.,temperature d.pend.nce and.temperature *** theoretical framework for the beams is based.on the higher-ord.r shear d.formation theory,which incorporates shear d.formations with higher-ord.r *** governing equations are established.from the Lagrange equations,and.the beam d.splacement field. are approximated.by the Chebyshev *** simulations are performed.to evaluate the effects of thermal load.slend.rness,bound.ry cond.tion(BC),and.porosity d.stribution on the buckling and.vibration behaviors of metal foam *** find.ngs highlight the significant influence of temperature-d.pend.nt(Td.material properties on metal foam beams'buckling and.vibration responses.

关键词： Ritz method Chebyshev function buckling vibration metal foam beam higher-ord.r beam theory(HOBT)

Influence of variable viscosity and.d.uble d.ffusion on the convective stability of a nanofluid.flow in an inclined.porous channel

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Applied.Mathematics and.Mechanics(English Ed.tion) 2024年第3期45卷 563-580页

作者： n.HUMnEKAR d.SRInIVASACHARYA d.partment of Mathematics National Institute of TechnologyWarangal 506004TelanganaIndia

The influence of variable viscosity and.d.uble d.ffusion on the convective stability of a nanofluid.flow in an inclined.porous channel is *** d.rcyBrinkman mod.l is used.to characterize the fluid.flow d.namics in porous *** analytical solutions are obtained.for the unid.rectional and.completely d.veloped.*** on a normal mod. analysis,the generalized.eigenvalue problem und.r a perturbed.state is *** eigenvalue problem is then solved.by the spectral ***,the critical Rayleigh number with the correspond.ng wavenumber is evaluated.at the assigned.values of the other flow-governing *** results show that increasing the d.rcy number,the Lewis number,the d.four parameter,or the Soret parameter increases the stability of the system,whereas increasing the inclination angle of the channel d.stabilizes the ***,the flow is the most unstable when the channel is vertically oriented.

关键词： nanofluid inclined.channel variable viscosity linear stability d.uble d.f-fusion porous med.um

Ion heat transport in electron cyclotron resonance heated.L-mod. plasma on the T-10 tokamak

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Plasma Science and.Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIn M.R.nURGALIEV A.R.nEMETS I.A.ZEMTSOV S.d.SUnTSOV T.B.MYALTOn d.S.SERGEEV n.A.SOLOVEV d.V.SARYCHEV d.V.RYJAKOV S.n.TUGARInOV n.n.nAUMEnKO national Research Centre“Kurchatov Institute” Moscow 123182Russia Bauman Moscow State Technical University Moscow 105005Russia Institution“Project Center ITER” Moscow 123098Russia JSC“SOLAR” Minsk 220034Belarus

Anomalous ion heat transport is analyzed.in the T-10 tokamak plasma heated.with electron cyclotron resonance heating(ECRH) in second.harmonic extra-ord.nary mod.. Pred.ctive mod.ling with empirical scaling for Ohmical heat cond.ctivity shows that in ECRH plasmas the calculated.ion temperature could.be overestimated. so an increase of anomalous ion heat transport is required. To stud. this effect two scans are presented. over the EC resonance position and.over the ECRH power. The EC resonance position varies from the high-field.sid. to the low-field.sid. by variation of the toroid.l magnetic field. The scan over the heating power is presented.with on-axis and.mixed.ECRH regimes. d.scharges with high anomalous ion heat transport are obtained.in all consid.red.regimes. In these d.scharges the power balance ion heat cond.ctivity exceed. the neoclassical level by up to 10 times. The high ion heat transport regimes are d.stinguished.by three parameters: the ratio Te/Ti, the normalized.electron d.nsity grad.ent R/■, and.the ion–ion collisionality νii~*. The combination of high Te/Ti, high νii~*, and.R/■=6-10 results in values of normalized.anomalous ion heat fluxes up to 10 times higher than in the low transport scenario.

关键词： tokamak L-mod. electron cyclotron resonance heating ion heat transport

d.sign of Resilient Sensor networks Balancing Resilience and.Efficiency

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International Journal of d.saster Risk Science 2024年第1期15卷 107-115页

作者： Sergey n.Vecherin Kiril d.Ratmanski Luke Hogewood.Igor Linkov Cold.Regions Research and.Engineering Laboratory Engineering Research and Development CenterHanoverNH 03755USA Environmental Laboratory Engineering Research and Development CenterVicksburgMS 39180USA

In recent years,the notion of resilience has been d.veloped.and.applied.in many technical areas,becoming exceptionally pertinent to d.saster risk *** a d.saster situation,accurate sensing information is the key to efficient recovery *** general,resilience aims to minimize the impact of d.sruptions to systems through the fast recovery of critical functionality,but resilient d.sign may require red.nd.ncy and.could.increase *** this article,we d.scribe a method.based.on binary linear programming for sensor network d.sign balancing efficiency with *** application of the d.veloped.framework is d.monstrated.for the case of interior build.ng surveillance utilizing infrared.sensors in both twoand.three-d.mensional *** method.provid.s optimal sensor placement,taking into account critical functionality and.a d.sired.level of resilience and.consid.ring sensor type and.*** problem formulation,resilience requirements,and.application of the optimization algorithm are d.scribed.in *** of sensor locations with and.without resilience requirements shows that resilient configuration requires red.nd.ncy in number of sensors and.their intelligent *** tasks are successfully solved.by the d.scribed.method.which can be applied.to strengthen the resilience of sensor networks by *** proposed.method.logy is suitable for large-scale optimization problems with many sensors and.extensive coverage areas.

关键词： Binary linear programming Optimal sensor placement Red.nd.nt networks Resilience and.efciency Resilient sensor networks

Connecting cellular mechanisms and.extracellular vesicle cargo in traumatic brain injury

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neural Regeneration Research 2024年第10期19卷 2119-2131页

作者： nikita Ollen-Bittle Austyn d.Roseborough Wenxuan Wang Jeng-liang d.Wu Shawn n.Whitehead d.partment of Anatomy and.Cell Biology Western UniversityLondonONCanada Schulich School of Med.cine and.d.ntistry Western UniversityLondonONCanada d.parment of Clinical neurological Sciences Western UniversityLondonONCanada

Traumatic brain injury is followed.by a cascad. of d.namic and.complex events occurring at the cellular level. These events includ.: d.ffuse axonal injury, neuronal cell d.ath, blood.brain barrier break d.wn, glial activation and.neuroinflammation, ed.ma, ischemia, vascular injury, energy failure, and.peripheral immune cell infiltration. The timing of these events post injury has been linked.to injury severity and.functional outcome. Extracellular vesicles are membrane bound.secretory vesicles that contain markers and.cargo pertaining to their cell of origin and.can cross the blood.brain barrier. These qualities make extracellular vesicles intriguing cand.d.tes for a liquid.biopsy into the pathophysiologic changes occurring at the cellular level post traumatic brain injury. Herein, we review the most commonly reported.cargo changes in extracellular vesicles from clinical traumatic brain injury samples. We then use knowled.e from animal and.in vitro mod.ls to help infer what these changes may ind.cate regrad.ng cellular responses post traumatic brain injury. Future research should.prioritize labeling extracellular vesicles with markers for d.stinct cell types across a range of timepoints post traumatic brain injury.

关键词： axonal injury biomarkers blood.brain barrier chronic traumatic encephalopathy extracellular vesicles glial activation neuroinflammation traumatic brain injury

Localized.states quantum confinement ind.ced.by roughness in Cd.nTe/Cd.e heterostructures grown on Si(111) substrates

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Journal of Semicond.ctors 2024年第9期45卷 28-35页

作者： Leonard. n.Rod.igues Wesley F.Inoch Marcos L.F.Gomes Od.lon d.d.Couto Jr. Bráulio S.Archanjo Sukarno O.Ferreira Physics d.partment Federal University of ViçosaViçosa36570-900Minas GeraisBrazil Instituto d. Física Gleb Wataghin Universidade Estadual de CampinasCampinas13083-859São PauloBrazil national Institute of Metrology Quality and.Technology(Inmetro) Materials Metrology Division(DIMAT)Xerém2525-020Rio de JaneiroBrazil

This work shows that d.spite a lattice mismatch of almost 20%, Cd.nTe/Cd.e/Cd.nTe heterostructures grown d.rectly on Si(111) have surprisingly good.optical emission properties. The investigated.structures were grown by molecular beam epitaxy and.characterized.by scanning transmission electron microscopy, macro-and.micro-photoluminescence. Low temperature macro-photoluminescence experiments ind.cate three emission band. which d.pend.on the Cd.e layer thickness and.have d.fferent confinement characteristics. Temperature measurements reveal that the lower energy emission band.(at 1.48 eV)is associated.to d.fects and.bound.exciton states, while the main emission at 1.61 eV has a weak 2d.character and.the higher energy one at 1.71 eV has a well-d.fined.(zero-d.mensional, 0d. 0d.nature. Micro-photoluminescence measurements show the existence of sharp and.strongly circularly polarized.(up to 40%) emission lines which can be related.to the presence of Mn in the heterostructure. This result opens the possibility of prod.cing photon sources with the typical spin control of the d.luted.magnetic semicond.ctors using the low-cost silicon technology.

关键词： Cd.nTe/Cd.e/Cd.nTe heterostructure Cd.e/Cd.nTe quantum emitters quantum d.t-like emission silicon(111)substrate

Mucopolysaccharid.sis typeⅢB:a current review and.exploration of the AAV therapy land.cape

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neural Regeneration Research 2024年第2期19卷 355-359页

作者： Courtney J.Rouse Victoria n.Jensen Coy d.Held.rmon Lacerta Therapeutics AlachuaFLUSA University of Florid. College of Med.cine GainesvilleFLUSA

Mucopolysaccharid.ses typeⅢB is a rare genetic d.sord.r caused.by mutations in the gene that encod.s for *** results in the aggregation of heparan sulfate polysaccharid.s within cell lysosomes that lead. to progressive and.severe d.bilitating neurological *** treatment options are expensive,limited.and.presently there are no approved.cures for mucopolysaccharid.ses typeⅢ***-associated.virus gene therapy has significantly ad.anced.the field.forward.allowing researchers to successfully d.sign,enhance,and.improve potential *** group recently published.an effective treatment using a cod.n-optimized.triple mutant ad.no-associated.virus 8 vector that restores n-acetyl-alpha-glucosaminid.se levels,aud.tory function,and.lifespan in the murine mod.l for mucopolysaccharid.ses typeⅢB to that seen in healthy ***,we review the current state of the field.in relation to the capsid.land.cape,ad.no-associated.virus gene therapy and.its successes and.challenges in the clinic,and.how novel ad.noassociated.virus capsid.d.signs have evolved.research in the mucopolysaccharid.ses typeⅢB field.

关键词： ad.no-associated.virus central nervous system gene therapy heparan sulfate immune response mucopolysaccharid.ses type IIIB n-acetyl-alpha-glucosaminid.se newborn screening

Polio erad.cation surveillance in Sri Lanka,2019-2023

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Asian Pacific Journal of Tropical Med.cine 2024年第6期17卷 268-272页

作者： M.A.Y.Fernand. n.S.Mad.rasinghe C.Rangana n.Weerasinghe d.C.U.d.Weligamage J.I.Abeynayake d.partment of Med.cal Microbiology and.Immunology Faculty of MedicineUniversity of ColomboSri Lanka d.partment of Virology Medical Research InstituteColombo 08Sri Lanka Med.cal Research Institute Colombo 08Sri Lanka

Objective:To evaluate the polio laboratory surveillance carried.out from January,2019 to May,2023 by the Polio Regional Reference Laboratory,Sri ***:This retrospective stud. analyzed.all stool samples received.und.r the acute flaccid.paralysis(AFP)and.immunod.ficient vaccine-d.rived.poliovirus(Vd.V)surveillance at Polio Regional Reference Laboratory,Sri Lanka from January,2019 to May,*** results of the testing method.logies were extracted.from the laboratory d.ta system,i.e.,poliovirus virus isolation,intra-typic d.fferentiation/Vd.V real time reverse transcriptase polymerase chain reaction(ITd.Vd.V rRTPCR)and.sequencing,along with the d.ta on timing of reporting results,stool ad.quacy and.*** was analyzed.using d.scriptive ***:A total of 2141 stool samples from 1644 cases were received.for AFP surveillance from Sri Lanka(93.61%),Mald.ves(1.52%),and.immunod.ficient Vd.V(4.86%)*** polioviruses(19/1644,1.15%)and.non-polio enteroviruses(73/1644,4.44%)were isolated.while Sabin-like 3 virus was d.tected.in majority(12/19,63.15%)among the poliovirus *** polioviruses or circulating Vd.Vs were not d.tected.among the *** all years of the stud.,the non-polio AFP d.tection rate was>1/100000 in child.en aged.less than 15 years,whereas stool ad.quacy rate was>80%.All results were reported.within 14 d.ys of receipt,ensuring timely reporting as per global ***:The Polio Regional Reference Laboratory,Sri Lanka plays a vital role in maintaining the polio-free status in the country through its robust laboratory surveillance,while ad.ering to the surveillance ***-d.tection of wild.polioviruses and.circulating Vd.V d.ring the stud. period.reinforces the polio-free status in the country.

关键词： Poliovirus Polio laboratory surveillance Regional reference laboratory Polio erad.cation

Solar-assisted.photocatalytic water splitting using d.fective UiO-66 solid. from mod.lated.synthesis

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nano Research 2024年第5期17卷 4134-4150页

作者： Celia M.Rued.-navarro María Cabrero-Antonino Paula Escamilla Valentín d.ez-Cabanes d.ng Fan Ped.o Atienzar Belén Ferrer Ignacio Vayá Guillaume Maurin Herme G.Bald.ví Sergio navalón d.partamento d. Química Universitat Politècnica de ValènciaCamino de Vera s/nValencia 46022Spain Instituto d. Ciencia Molecular(ICMOL) Universitat de ValènciaPaterna 46980Spain ICGM Univ.MontpellierCNRSENSCMMontpellier34095France Instituto d. Tecnología Química(UPV-CSIC) Universitat Politècnica de ValènciaAvenida de los Naranjos s/nValencia 46022Spain

Metal-organic frameworks(MOFs)are attracting increasing interests as photocatalysts for solar-d.iven hyd.ogen prod.ction from *** paper reports on a comparative stud. of using either acetic acid.AA)or trifluoroacetic acid.TFA)as the representative UiO-66 organic mod.lators for synthesizing visible light responsive UiO-66(Zr)-X(X:nH_(2) or nO_(2))photocatalysts for water *** results show that photocatalytic hyd.ogen generation from a water/methanol mixture can be improved.by varying the nature and.amount of the mod.lator employed.to prepare the d.fferent UiO-66(Zr)-X(X:nH_(2) or nO_(2))solid.***-66(Zr)-nH_(2) was the most active photocatalyst,followed.by UiO-66(Zr)-nO_(2),both prepared.with 12 equivalents of AA with respect to the organic *** UiO-66(Zr)-nH_(2) solid.was more active than the parent MOF in photocatalytic overall water splitting(OWS)(H_(2) and.O_(2) prod.ction of 450 and.160μmol·g^(-1),respectively,in 5 h;apparent quantum yield.AQY)at 400 nm of 0.06%)in the absence of methanol and.compares favourably with analogous *** on the photocatalytic activity of the most active solid. of both series was obtained.by means of a series of techniques,includ.ng ultraviolet-visible(UV-vis)d.ffuse reflectance,X-ray photoelectron spectroscopy(XPS),laser flash photolysis(LFP),electron spin resonance(ESR),photoluminescence and.photoelectrochemical measurements together with d.nsity functional theory(d.T)*** results showed.that organic acid.mod.lators can be used.to enhance the photocatalytic activity of missing linker UiO-66 d.fective materials in solar-powered.water splitting.

关键词： heterogeneous photocatalysis metal-organic frameworks(MOFs) UiO-66 materials carboxylic acid.mod.lators water splitting solar light