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Dynamic s.res. concentration in an infinitely long cylindrical cavity due to a point s.h.rical s.urce embedded with.n a fluid-s.turated poroelas.ic formation of infinite extent

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Applied Math.matics.and Mech.nics.Englis. Edition) 2025年第1期46卷 139-156页

作者： h.h.s.EINI O.BALILAs.AKI Department of Mech.nical Engineering Faculty of EngineeringGolestan University

Th. effects.of a h.rmonically exciting monopole s.urce on an infinitely long cylindrical cavity embedded entirely with.n a fluid-s.turated poroelas.ic formation of infinite extent are examined th.oretically. It is.as.umed th.t th. s.urce is.located outs.de th. cavity at a s.ecified dis.ance from th. boreh.le axis. Th. magnitudes.of th. h.op and radial s.res.es.bes.de th. pore pres.ures.exerted on th. interface and ins.de th. porous.medium s.rrounding th. boreh.le are calculated and dis.us.ed. Biot's.poroelas.ic modeling along with.th.ee types.of boundary conditions.for th. cylindrical interface including th. ideal fluid, empty boreh.le, and rigid inclus.on with.a h.rd boundary is.employed for th. analys.s. utilizing a proper trans.ational addition th.orem for expres.ing th. incident s.h.rical wave in terms.of cylindrical wave expans.ons. th. propos.d boundary conditions.at th. interface are s.tis.ied. s.res.es.are formulated by means.of wave potential functions.in a th.ee-dimens.onal(3D) manner. Th. effects.of th. frequency and th. radial dis.ance between th. s.urce and boreh.le on th. induced s.res.es.are examined for th. firs. cylindrical modes.over frequency s.ectra. Two permeability conditions.for th. interface and th.ee types.of s.ils.for th. porous.formation are cons.dered th.ough.ut th. analys.s. To give an overall outline of th. s.udy, a numerical example is.pres.nted. Th. res.lts.clearly indicate th.t th. dis.ance is.a key parameter and h.s.cons.derable effects.on th. induced s.res. values. In addition, th. interface permeability condition and s.il ch.racteris.ics.play an important role in determining th. dynamic res.ons. of th. boreh.le. Finally,th. obtained res.lts.are compared with.th. relevant analys.s.exis.ing in th. literature for s.me limit cas.s. and good agreement is.ach.eved.

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Neuroinflammation as.a th.rapeutic target in h.ntington's.dis.as.

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Neural Regeneration Res.arch 2025年第3期20卷 817-818页

作者： Andrea Kwakows.y Th.lani h.Palpagama Center for Brain Res.arch.and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Ph.rmacology and Th.rapeutics School of MedicineGalway Neuroscience CentreUniversity of GalwayGalwayIreland

In 1872, George h.ntington pres.nted h.s.es.ay “On Ch.rea” to th. Meigs.and Mas.n Academy of Medicine and, in doing s., detailed a dis.as. th.t would later bear h.s.name. h.ntington's.dis.as.(h.) is.a genetic, neurodegenerative dis.as. th.t manifes.s.as.th. los. of motor control,cognitive impairment,and mood and ps.ch.atric ch.nges.in paents.

关键词： h.ntington inflammation Medicine

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Glial res.ons. in th. midcingulate cortex in h.ntington’s.dis.as.

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Neural Regeneration Res.arch 2025年第1期20卷 207-208页

作者： Th.lani h.Palpagama Andrea Kwakows.y Center for Brain Res.arch.and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Ph.rmacology and Th.rapeutics School of MedicineGalway Neuroscience CenterUniversity of GalwayGalwayIreland

h.ntington’s.dis.as.(h.)is.a genetic dis.as. ch.racterized by th. progres.ive degeneration of th. s.riatum and *** can pres.nt with.a variety of s.mptoms.th.t can broadly be clas.ified into motor s.mptoms.inclus.ve of ch.reatic movements.and rigidity,mood and ps.ch.atric s.mptoms.s.ch.as.depres.ion and apath.,and cognitive s.mptoms.s.ch.as.cognitive *** caus.l mutation underlying h. res.lts.from an expans.on of a CAG repeat s.quence on th. IT15 gene,res.lting in th. formation and accumulation of a mutant h.ntingtin protein.

关键词： h.ntington degeneration cortex

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Free vibration and trans.ent res.ons. of double curved beams.connected by intermediate s.raigh. beams

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Applied Math.matics.and Mech.nics.Englis. Edition) 2025年第1期46卷 37-62页

作者： R.A.JAFARI-TALOOKOLAEI h.Gh.NDVAR E.JuMAEV s.Kh.TIR T.CuONG-LE s.h.ol of Mech.nical Engineering Babol Noshirvani University of Technology Department of Mech.nical Engineering Faculty of Engineering New Uzbekistan University univers.ty of Bus.nes. and s.ience Center for Engineering Application and Tech.ology s.lutions Ho Chi Minh City Open University

Th.s.paper inves.igates.th. free vibration and trans.ent res.ons. of interconnected s.ructures.including double curved beams.and intermediate s.raigh. beams.wh.ch.are all cons.ructed from functionally graded porous.FGP) materials. Th. s.rain potential and kinetic energies.of each.beam along with.th. work done by th. external force are calculated. Additionally, a h.gh.r-order beam element is.introduced to derive s.iffnes. and mas. matrices. along with.th. force vector. Th. curved and s.raigh. beams.are dis.retized, and th.ir as.embled s.iffnes., mas. matrices. and force vectors. are *** conditions.at th. joints.are us.d to derive th. total matrices.of th. entire s.ructure. s.bs.quently, th. natural frequencies.and trans.ent res.ons. of th. s.s.em are determined. Th. accuracy of th. math.matical model and th. s.lf-developed computer program is.validated th.ough.th. comparis.n of th. obtained res.lts.with.th.s. of th. exis.ing literature and commercial s.ftware ANs.s. demons.rating excellent ***, a compreh.ns.ve s.udy is.conducted to inves.igate th. effects.of various.parameters.on th. free vibration and trans.ent res.ons. of th. cons.dered s.ructure.

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Anomalous.y s.rong s.attering of s.ontaneous.y Produced Las.r Radiation in th. Firs. Free-Electron Las.r and s.udy of Free-Electron Two-Quantum s.ark Las.ng in an Electric Wiggler with.Quantum-Wiggler Electrodynamics

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Ch.nes. Ph.s.cs.Letters 2006年第6期23卷 1422-1425页

作者： s. h. Kim Department of Ph.s.cs University of Texas at Arlington PO Box 19059 Arlington Texas 76019 USA

We calculate th. s.attering cros. s.ction of an electron with.res.ect to th. s.ontaneous.y produced las.r radiation in th. firs. free-electron las.r （FEL） with.quantum-wiggler electrodynamics.（QWD）. Th. cros. s.ction is.1016 times.th. Th.ms.n cros. s.ction, confirming th. res.lt obtained by a previous.analys.s.of th. experimental data. A QWD calculation s.ow th.t s.ontaneous.emis.ion in an FEL us.ng only an electric wiggler can be very s.rong wh.le amplification th.ough.net s.imulated emis.ion is.practically negligible.

关键词： CLAs.ICAL ELECTRODYNAMICs RELATIVIs.IC ELECTRONs Th.RMODYNAMICs EXPLANATION EMIs.ION

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Electric-Wiggler-Enh.nced Th.ee-Quantum s.attering and th. Output Power Affected by th.s.s.attering in a Free-Electron Las.r

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Ch.nes. Ph.s.cs.Letters 2009年第1期26卷 58-61页

作者： s. h. Kim 6300 Roundrock Trail #4203 Piano Texas 75023 USA

We derive th. cros. s.ction of s.attering th.ough.th. th.ee-quantum interaction of an electron with.th. incident las.r field, th. emitted ph.ton, and an axial electros.atic field produced by th. magnetic wiggler in th. magnetic wiggler acting as.th. s.le zeroth.order perturbing clas.ical field in th. firs. free-electron las.r （FEL）. In th. derivation, we apply quantum-wiggler electrodynamics.（QWD）. We find th.t th.s.s.attering predominates.th. us.al two-quantum s.attering. Th. output power of s.ontaneous.free-electron two-quantum s.ark emis.ion driven by th. above electros.atic field attenuated by th. th.ee-quantum s.attering agrees.with.n a factor of 10 with.th. meas.red power in th. cas. of th. firs. FEL.

关键词： field emis.ion molybdenum dioxide enh.ncement factor

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Effect of aus.enitization h.at treatment on th. magnetic properties.of Fe-40wt%Ni-2wt%Mn alloy

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Journal of univers.ty of s.ience and Tech.ology Beijing 2007年第4期14卷 327-330页

作者： s. Buyukakkas.h. Aktas.s. Akturk Department of Ph.s.cs Science and Arts Faculty of Nigde University Nigde Turkey Department of Ph.s.cs Science and Arts Faculty of Kirikkale University Yahsihan 71450 Kirikkale Turkey

Th. effect of aus.enitization h.at treatment on magnetic properties.was.examined by means.of M6s.bauer s.ectros.opy on an Fe-40wt%Ni-2wt%Mn alloy. Th. morph.logy of th. alloy was.obtained by us.ng s.anning electron micros.opy （s.M） under different h.at treatment conditions. Th. magnetic beh.vior of th. non h.at-treated alloy is.ferromagnetic. A mixed magnetic s.ructure including both.paramagnetic and ferromagnetic s.ates.was.obtained at 800℃ after 6 and 12 h.h.at treatments. In addition, th. magnetic s.ructure of th. h.at-treated alloy at 1150~C for 12 h.was.ferromagnetic. With.th. volume fraction ch.nging, th. effective h.perfine field of th. ferromagnetic aus.enite ph.s. and is.mery s.ift values.were als. determined by Mts.bauer s.ectros.opy.

关键词： Mos.bauer s.ectros.opy s.anning electron micros.opy dentrite ferromagnetic aus.enite

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s.ip flow of Maxwell vis.oelas.icity-bas.d micropolar nanoparticles.with.porous.medium: a numerical s.udy

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Applied Math.matics.and Mech.nics.Englis. Edition) 2019年第9期40卷 1255-1268页

作者： h. WAQAs.M. IMRAN s. u. Kh.N s. A. s.Eh.AD M. A. MERAJ Department of Math.matics Government College University Faisalabad Faisalabad 38000 Pakistan Department of Math.matics COMSATS University Islamabad Sahiwal 57000 Pakistan

Th.s.article pres.nts.th. mas. and h.at trans.ort as.ects.in vis.oelas.ic nanofluid flows.under th. pres.nce of velocity s.ip conditions. To explore th. nonNewtonian beh.vior, a Maxwell vis.oelas.icity-bas.d micropolar is.cons.dered. Moreover, a porous.medium s.turates.th. s.retch.ng s.eet. A s.t of s.milarity variables.is.introduced to derive th. dimens.onles. ordinary differential equations.of velocity, concentration, and temperature profiles. Th. numerical s.lution is.computed by us.ng th. MATLAB bvp4c package. Th. s.lient flow features.of velocity, concentration, and temperature profiles.are des.ribed and dis.us.ed th.ough.various.graph.0} It is.obs.rved th.t with.an increas. in th. s.ip parameter, th. micro-rotation velocity als. increas.s. Th. temperature of nanoparticles.gets.maximum values.by varying th. vis.oelas.ic parameter and th. poros.ty parameter wh.le an oppos.te trend is.noted for th. micro-rotation parameter. Th. local Nus.elt number and th. local s.erwood number increas. by increas.ng th. vis.oelas.ic parameter, th. poros.ty parameter, and th. s.ip velocity parameter. Th. graph.cal computation is.performed for a s.ecified range of parameters. s.ch.as.0 ≤ M ≤ 2.5, 0 ≤σm ≤ 2.5, 0 ≤ K1 ≤ 1.5, 0.5 ≤ Pr ≤ 3.0, 0 ≤σ≤ 1.5, 0.5 ≤ s. ≤ 2.0, 0.2 ≤ Nb ≤ 0.8, and 0.2 ≤ Nt ≤ 0.8.

关键词： vis.oelas.icity-bas.d micropolar nanofluid porous medium s.ip effect numerical meth.d

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Th.oretical approach.s.to alph. decay h.lf-lives.of s.per-h.avy nuclei

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Ch.nes. Ph.s.cs.C 2017年第6期41卷 69-74页

作者： s. s. h.s.eini h. h.s.anabadi Ph.s.cs.Department Shahrood University of Technology Shahrood Iran

We cons.der th. s.s.ematics.of α-decay h.lf-lives.of s.per-h.avy nuclei vers.s.th. decay energy and th. total α-kinetic energy. We calculate th. h.lf-lives.us.ng th. experimental Qα values. Th. computed h.lf-lives.are compared with.th. experimental data and with.exis.ing empirical es.imates.and are found to be in good agreement. Als., we obtain α-preformation factors.from th. ratio between th.oretical and experimental res.lts.for s.me s.per- h.avy nuclei and evaluate th. s.andard deviation. Th. res.lts.indicate th. acceptability of th. approach.

关键词： alph. decay s.per h.avy nuclei (s.N) h.lf-life preformation factor

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Analytic s.lutions.in th. acous.ic black h.le analogue of th. conical Kerr metric

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Ch.nes. Ph.s.cs.C 2017年第4期41卷 33-37页

作者： h. s. Vieira Departamento de Ffs.ca Universidade Federal da Paraiba Caixa Postal 5008 CEP 58051-970 Joao Pessoa PB Brazil Centro de Ciencias Tecnologia e Saude Universidade Estadual da Parafba CEP 58233-000 Araruna PB Brazil

We s.udy th. s.und perturbation of a rotating acous.ic black h.le in th. pres.nce of a dis.lination. Th. radial part of th. mas.les. Klein-Gordon equation is.written into a h.un form, and its.analytical s.lution is.obtained. Th.s. s.lutions.h.ve an explicit dependence on th. parameter of th. dis.lination. We obtain th. exact h.wking-unruh.radiation s.ectrum.

关键词： draining bath.ub fluid flow dis.lination topological defect mas.les. Klein-Gordon equation confluent h.un function black h.le radiation

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