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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.

关键词：

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

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

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.

关键词：

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

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

Preparation of manganes. （III） acetylacetonate nanoparticles. via an environmentally benign route

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Frontiers.of Ch.mical s.ience and Engineering 2013年第3期7卷 329-337页

作者： m. s. s.alaby h. Abdallah National Res.arch.Center El Buhouth St. Dokki Cairo Egypt

With.th. h.pe of overcoming th. generation of h.zardous.materials.to h.man h.alth.and environment, s.rious.and great endeavor h.ve been made in catalys. fabrication us.ng green ch.mis.ry tech.ology. In th.s.paper, th. manganes. （III） acetylacetonate nanoparticles.with.diameters.of about 146 nm were prepared by a s.mple and environmentally benign route bas.d on h.drolys.s.of KmnO4 followed by reaction with.acetylacetone in rapid s.irring rate or ultras.nication. Th. as.prepared s.mples.were ch.racterized by X-ray diffraction, energy dis.ers.ve X-ray fluores.ence （EDIX）, Fourier trans.er infrared s.ectros.opy and s.anning electron micros.ope. Various.parameters.were inves.igated, and th. pure and s.able crys.als.of manganes. （III） acetylacetonate could be obtained in 98% convers.on at a molar ratio 7：1 of acetylacetone to KmnO4 and 75℃after 60 min. We furth.r propos.d a math.matical model, and th. predicted res.lts.from model were in good agreement with.experimental res.lts.

关键词： green ch.mis.ry manganes. (III) acetylacetonate reaction convers.on math.matical model

Application of s.ortened h.at treatment cycles.on A356 automotive brake calipers.with.res.ective globular and dendritic micros.ructures

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Trans.ctions.of Nonferrous.metals.s.ciety of Ch.na 2010年第9期20卷 1780-1785页

作者： h.mLLER G.GOVEN DER W.E.s.UmPF materials.s.ience and manufacturing Council for Scientific and Industrial Research (CSIR) Department of materials.s.ience and metallurgic al Engineering University of Pretoria

s.nce th. automotive indus.ry h.s.many pos.ible applications.for s.mi-s.lid metal (s.m)-h.gh.pres.ure die cas.ing (h.DC) parts. th. newly developed h.at treatment cycles. as.well as.th. traditional h.at treatment cycles. were applied to A356 brake calipers.cas. us.ng a LK DCC630 h.DC *** h.rdnes. meas.rements.at a cros. s.ction of th. brake calipers.were performed, indicating th.t s.milar values.can be obtained wh.n us.ng th. s.gnificantly s.orter h.at treatment ***, th. typical tens.le properties.th.t can be obtained for s.m-h.DC A356 brake calipers.are compared with.th.s. manufactured by gravity die *** indicate th.t th. differences.in micros.ructures.(globular or dendritic) do not h.ve a noteworth. effect on th. h.at treatment *** implies.th.t th. s.ort h.at treatment cycles.originally developed for globular s.m-h.DC A356 cas.ings.can be s.cces.fully applied to dendritic liquid A356 cas.ings.too.

关键词： s.mi-s.lid metal (s.m) forming h.at treatment A356 brake caliper gravity die cas.ing automotive

A Numerical s.udy on th. As.mmetric Water Entry of A Wedge s.ction

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海洋工程：英文版 2004年第4期18卷 595-604页

作者： m. s. s.if s. m. mous.viraad s. h. s.ddath.s.eini Department of mech.nical Engineering Sharif University of Technology Tehran Iran Department of Mechanical Engineering Sharif University of Technology Tehran Iran Department of Mechanical Engineering Sharif University of Technology Tehran Iran

Th. effect of th. as.mmetric water entry over a s.bmerged part of a s.ip on th. h.drodynamic impact is.inves.igated numerically. A wedge body is.cons.dered and th. problem is.as.umed to be two-dimens.onal. Th. res.lts.of s.mmetric and as.mmetric impacts.are compared. Th. effect is.found s.gnificant in th. numerical s.mulation. Th. maximum h.drodynamic pres.ure at a h.el angle of 10 degrees.becomes.about 95% more th.n th.t of th. s.mmetric entry. Th. res.lt of th. pres.nt work proves.th. importance of as.mmetrical h.drodynamic impact loading for s.ructural des.gn of a s.ip. Bes.des. th. numerical procedure is.not limited to a wedge type cros. s.ction and it is.pos.ible to apply it for any real geometry of s.ips.and h.gh.s.eed craft.

关键词： as.mmetric water entry h.drodynamic impact