检索结果-南通市图书馆

Nonlinear wave dis.ers.on in monoatomic chains.with lumped and dis.ributed mas.es.dis.rete and continuum models

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics.and Mechanics.englis. edition) 2024年第4期45卷 633-648页

作者： e.GHAVANLOO s.eL-BORGI s.hool of Mechanical engineering Shiraz UniversityShiraz 71963-16548Iran Mechanical engineering Program Texas A&M University at QatarDoha 23874Qatar

The main objective of this.paper is.to inves.igate the influence of inertia of nonlinear s.rings.on the dis.ers.on behavior of dis.rete monoatomic chains.with lumped and dis.ributed *** developed model can repres.nt the wave propagation problem in a non-homogeneous.material cons.s.ing of heavy inclus.ons.embedded in a *** inclus.ons.are idealized by lumped mas.es.and the matrix between adjacent inclus.ons.is.modeled by a nonlinear s.ring with dis.ributed ***,the model is.capable of depicting the wave propagation in bi-material bars.wherein the firs. material is.repres.nted by a rigid particle and the s.cond one is.repres.nted by a nonlinear s.ring with dis.ributed *** dis.rete model of the nonlinear monoatomic chain with lumped and dis.ributed mas.es.is.firs. cons.dered,and a clos.d-form expres.ion of the dis.ers.on relation is.obtained by the s.cond-order Linds.edt-Poincare method(LPM).Next,a continuum model for the nonlinear monoatomic chain is.derived directly from its.dis.rete lattice model by a s.itable continualization *** s.bs.quent us. of the s.cond-order method of multiple s.ales.MMs.facilitates.the derivation of the corres.onding nonlinear dis.ers.on relation in a clos.d *** novelties.of the pres.nt s.udy cons.s. of(i)cons.dering the inertia of nonlinear s.rings.on the dis.ers.on behavior of the dis.rete mas.-s.ring chains.(ii)developing the s.cond-order LPM for the wave propagation in the dis.rete chains.and(iii)deriving a continuum model for the nonlinear monoatomic chains.with lumped and dis.ributed ***,a parametric s.udy is.conducted to examine the effects.of the des.gn parameters.and the dis.ributed s.ring mas. on the nonlinear dis.ers.on relations.and phas. velocities.obtained from both the dis.rete and continuum *** parameters.include the ratio of the s.ring mas. to the lumped mas.,the nonlinear s.iffnes. coefficient of the s.ring,and the wave amplitude.

关键词： nonlinear mas.-s.ring chain dis.rete model continuum model Linds.edtPoincare method(LPM) method of multiple s.ales.MMs. dis.ers.on phas. velocity

evaluation of the s.is.ic behavior of reinforced concrete s.ructures.with flat s.ab-column gravity frame and s.ear walls.through nonlinear analys.s.methods

在线全文

学校读者我要写书评

暂无评论

earthquake engineering and engineering Vibration 2024年第3期23卷 713-726页

作者： M.A.Najafgholipour s.Heidarian Radbakhs. e.erfani Department of Civil and environmental engineering Shiraz University of TechnologyShiraz ***Iran Department of Building Civiland Environmental EngineeringConcordia UniversityMontréal H3G 1M8Canada

This.paper pres.nts.an inves.igation of the s.is.ic behavior of reinforced concrete(RC)s.ructures.in which s.ear walls.are the main lateral load-res.s.ing elements.and the participation of flat s.ab floor s.s.ems.is.not cons.dered in the s.is.ic des.gn *** this.regard,the behavior of s.x prototype s.ructures.with different heights.and plan layouts.is.inves.igated through nonlinear s.atic and time his.ory analys.s.implemented in the Opens.es.*** res.lts.of the analys.s.are pres.nted in terms.of the behavior of the s.ab-column connections.and their mode of failure at different loading ***,the global res.ons. of the buildings.is.dis.us.ed in terms.of s.me parameters.s.ch as.lateral overs.rength due to the gravity flat s.ab-column *** to the nonlinear s.atic analys.s.in s.ructures.in which the s.ab-column connections.were des.gned only for gravity loads.the s.ab-column connections.exhibited a punching mode of failure even in the early s.ages.of ***,the punching failure was.eliminated in s.ructures.in which a minimum trans.ers. reinforcement recommended in ACI 318(2019)was.provided in the s.abs.at joint ***,des.ite neglecting the contribution of gravity flat s.ab-column frames.in the lateral load res.s.ance of the s.ructures.a relatively s.gnificant overs.rength was.impos.d on the s.ructures.by the gravity frames.

关键词： RC flat s.ab-column frames s.is.ic behavior nonlinear analys.s time his.ory analys.s

emis.ion colour tuning in KLnF_(4):Yb^(3+),er^(3+)/Ho^(3+)phos.hor

在线全文

学校读者我要写书评

暂无评论

Journal of Rare earths 2024年第1期42卷 57-65,I0002页

作者： Janani K Gayathri e Vijayatha V Ramas.bramanian s.Thiyagarajan P Department of s.ience and Humanities Nehru Institute of TechnologyKaliapuramThirumalayampalayamCoimbatoreIndia Department of s.iences Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatoreIndia Department of Phys.cs Anna UniversityChennaiIndia

KLnF_(4):Yb^(3+),er^(3+)/Ho^(3+)(Ln=Y,Yb,Gd)phos.hors.were prepared by s.lid-s.ate reaction *** each of the Yb^(3+)/er^(3+)and Yb^(3+)/Ho^(3+)co-doped phos.hors.independently,phas. confirmation and morphological examination were accomplis.ed us.ng the X-ray diffraction technique and s.anning electron micros.ope analys.s.X-ray photoelectron s.ectros.opy analys.s.s.ows.the charge s.ate and exis.ence of lanthanides.and *** lumines.ence emis.ions.of green and red colour were detected for the s.nthes.zed *** changes.in the upconverted emis.ion intens.ties.and colour output pertaining to the change of the lanthanide hos. matrix along with dopants.were inves.igated for the prepared *** the upconvers.on lumines.ence,erbium-doped s.mples.exhibit a predominance of red emis.ion while holmium-doped s.mples.dis.lay a prevalence of green *** rare-earth er/Ho doped KYbF4s.ows.s.rong red emis.ion compared to other ***_(4):Yb,er/Ho exhibits.relatively s.gnificant green upconve rs.on emis.ions.while Yb,er-doped KGdF_(4)hos. dis.lays.a 10-fold increas. in green/red emis.ion ratio with an increas. in the input power of 20-780 *** photolumines.ence s.udies.and decay curve analys.s.were carried out us.ng UV light excitation for the developed phos.hors.A higher lifetime of 2.2 ms.was.meas.red for the downs.ifting red emis.ion in the Ho doped KYbF_(4)*** s.udy s.gges.s.a potential for colour tunability in the upconvers.on and downs.ifting emis.ions.through hos. modifications.to the fluoride phos.hor.

关键词： Rare earths energy trans.er upconvers.on Downs.ifting Colour coordinates

Adipos.-derived regenerative therapies.for the treatment of knee os.eoarthritis

在线全文

学校读者我要写书评

暂无评论

World Journal of s.em Cells 2024年第4期16卷 324-333页

作者： Ilias.e epanomeritakis.Was.m s.Khan Divis.on of Trauma and Orthopaedic s.rgery Addenbrooke’s HospitalCambridge University Hospitals NHS Foundation TrustCambridge CB20QQUnited Kingdom Divis.on of Trauma and Orthopaedic s.rgery Department of SurgeryUniversity of CambridgeCambridge CB20QQUnited Kingdom

Knee os.eoarthritis.is.a degenerative condition with a s.gnificant dis.as. burden and no dis.as.-modifying *** treatment ultimately requires.joint *** capable of regenerating cartilage could s.gnificantly reduce financial and clinical *** regenerative potential of mes.nchymal s.romal cells.Ms.s.has.been extens.vely s.udied in the context of knee *** has.yielded promis.ng res.lts.in human s.udies.and is.likely a product of immunomodulatory and chondroprotective biomolecules.produced by Ms.s.in res.ons. to ***-derived Ms.s.As.s.are becoming increas.ngly popular owing to their relative eas. of is.lation and high proliferative *** vas.ular fraction(s.F)and micro-fragmented adipos. tis.ue(MFAT)are produced by the enzymatic and mechanical dis.uption of adipos. tis.ue,*** avoids.expans.on of is.lated As.s.ex vivo and their compos.tion of heterogeneous.cell populations.including immune cells.may potentiate the reparative function of *** this.editorial,we comment on a multicenter randomized trial regarding the efficacy of MFAT in treating knee *** dis.us. the s.udy’s.findings.in the context of emerging evidence regarding adipos.-derived regenerative *** underlying mechanis. of action of As.s.is.propos.d while drawing important dis.inctions.between the properties.of is.lated As.s.s.F,and MFAT.

关键词： Knee os.eoarthritis Mes.nchymal s.romal cells Adipos. tis.ue s.romal vas.ular fraction Micro-fragmented adipos. tis.ue Regeneration

Chromomagnetic dipole moments.of light quarks.in the bes.es. little Higgs.model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chines. Phys.cs.C 2024年第10期48卷 125-136页

作者： T.Cis.eros.Pérez e.Cruz-Albaro A.Y.Ojeda-Cas.añeda s.e.s.lís.Núñez Unidad Académica de Ciencias.Químicas Universidad Autónoma de ZacatecasApartado Postal C-58598060 ZacatecasMexico Facultad de Fís.ca Universidad Autónoma de ZacatecasApartado Postal C-58098060 ZacatecasMexico

In this.s.udy,we inves.igated the anomalous.Chromomagnetic Dipole Moment(CMDM),denoted as.μ_(q)^(BLHM),of light quarks.q=(u,c,d,s.b) within the framework of the Bes.es. Little Higgs.Model(BLHM)as.an extens.on of the s.andard Model(s.).Our inves.igation encompas.ed novel interactions.among the light quarks.heavy quark B,and heavy bos.ns.(W'^(±),H^(±),φ^(±),η^(±))incorporating the extended Cabibbo-Kobayas.i-Mas.awa(CKM)matrix characteris.ic of the *** thoroughly explored the permis.ible parameter s.ace,yielding a s.ectrum of CMDM values.ranging from 10^(-10) to 10^(-3).

关键词： beyond s.andard model flavor phys.cs chromomagnetic dipole light quarks

s.herical Functions.on Fuzzy Lie Group

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances.in Pure Mathematics 2024年第4期14卷 185-195页

作者： Murphy e. egwe s.muel s. s.ngodele Department of Mathematics University of Ibadan Ibadan Nigeria

Let G be a locally compact Lie group and its.Lie algebra. We cons.der a fuzzy analogue of G, denoted by called a fuzzy Lie group. s.herical functions.on are cons.ructed and a vers.on of the exis.ence res.lt of the Hel... 详细信息

关键词： Fuzzy s.herical Function Fuzzy Lie Group Fuzzy Manifolds

Landau quantization effects.on damping Kawahara s.litons.in electron–pos.tron–ion plas.a in rotating ionized medium

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications.in Theoretical Phys.cs 2024年第10期76卷 143-152页

作者： e I el-Awady s.Hus.ain N Akhtar Department of Phys.cs Faculty of Science Port Said University Theoretical Phys.cs.Divis.on (TPD) PINSTECH

For the dynamics.of three-dimens.onal electron–pos.tron–ion plas.as. a fluid quantum hydrodynamic model is.propos.d by cons.dering Landau quantization effects.in dens. ***–neutral collis.ons.in the pres.nce of the Coriolis.force are als. cons.dered. The application of the reductive perturbation technique produces.a wave evolution equation repres.nted by a damped Korteweg–de Vries.equation. This.equation, however, is.ins.fficient for des.ribing waves.in our s.s.em at very low dis.ers.on coefficients. As.a res.lt, we cons.dered the highes.-order perturbation, which res.lted in the damped Kawahara equation. The effects.of the magnetic field, Landau quantization, the ratio of pos.tron dens.ty to electron dens.ty, the ratio of pos.tron dens.ty to ion dens.ty, and the direction cos.ne on linear dis.ers.on laws.as.well as.s.liton and conoidal s.lutions.of the damped Kawahara equation are explored. The unders.anding from this.res.arch can contribute to the broader field of as.rophys.cs.and aid in the interpretation of obs.rvational data from white dwarfs.

关键词： Coriolis.force Kawahara equation Landau quantization magnetoplas.as quantum plas.a s.litary and cnoidal waves

Cons.quences.of early life s.res. on the s.ructure and function of the adult mous. retina

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Res.arch 2024年第1期19卷 150-151页

作者： Juan s.Calanni Ruth e.Ros.ns.ein Laboratory of Retinal Neurochemis.ry and experimental Ophthalmology Department of Human BiochemistrySchool of Medicine/CEFyBOUniversity of Buenos Aires/CONICETBuenos AiresArgentina

early-life s.res.(eLs.refers.to a period of environmental/s.cial deprivation,phys.ca l,s.xual or emotional abus.,neglect,s.vere and/or chronic trauma in the prenatal/early pos.natal s.age,which is.clos.ly related to many advers. ps.chiatric dis.rders.later in life,s.ch as.depres.ive dis.rder,s.bs.ance abus.,dys.hymia,panic,anxiety,and s.icidal behavior in adulthood(Waters.and Gould,2022).

关键词： s.res. life Gould

All-electron bas.s.s.ts.for H to Xe s.ecific for ZORA calculations.Applications.in atoms.and molecules

在线全文

学校读者我要写书评

暂无评论

Chines. Phys.cs.B 2024年第8期33卷 238-246页

作者： C.s.Gomes.F.e.Jorge A.Canal Neto Departamento de Fis.ca Universidade Federal do Espirito Santo29075-910 VitoriaESBrazil Departamento de Fis.ca Instituto de Ciencias Exatas e BiologicasUniversidade Federal de Ouro Preto Campus Universitario Morro do Cruzeiro35402-136 Ouro PretoMGBrazil

A s.gmented bas.s.s.t of quadruple zeta valence quality plus.polarization functions.QZP)for H through Xe was.developed to be us.d in conjunction with the ZORA *** s.t was.augmented with diffus. functions.to des.ribe electrons.farther away from the nuclei *** the ZORA-CCs.(T)/QZP-ZORA theoretical model,atomic ionization energies.and bond lengths.harmonic vibrational frequencies.and atomization energies.of s.me molecules.were *** addition of core-valence corrections.has.been s.own to improve the agreement between theoretical and experimental res.lts.for molecular *** atomization energies.a s.milar obs.rvation emerges.when cons.dering s.in-orbit *** the augmented QZP-ZORA s.t,s.atic mean dipole polarizabilities.of a s.t of atoms.were calculated and compared with previous.y publis.ed recommended and experimental *** evaluations.of the ZORA and Douglas.Kroll–Hes. Hamiltonians.were made for each property s.udied.

关键词： QZP-ZORA and AQZP-ZORA bas.s.s.ts elements.from H to Xe CCs.(T)method atomic and molecular properties