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从热力学计算到定形体系的实验表征设计全金属复合相变材料

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Transactions of Nonfe.rous Me.als Socie.y of China 2024年第5期34卷 1393-1412页

作者： Chiara CONFALONIe.I Ale.sandra CAMNAGHI e.isabe.ta gariboldi Polite.nico di Milano Department of Mechanical EngineeringVia La Masa 120156 MilanItaly

用于热能管理的复合相变材料(C-PCMs)利用其一个或多个低熔点活性相的可逆相变(如熔化—凝固)存储和释放热能作为潜热。同时,高熔点的惰性相可以提供额外的性能,如定形性和改善的导热性。从难混溶合金中可获得具有这些特征的全金属复合... 详细信息

用于热能管理的复合相变材料(C-PCMs)利用其一个或多个低熔点活性相的可逆相变(如熔化—凝固)存储和释放热能作为潜热。同时,高熔点的惰性相可以提供额外的性能,如定形性和改善的导热性。从难混溶合金中可获得具有这些特征的全金属复合材料体系。本文将热力学计算和实验测试相结合,探讨二元(Al-In,Al-Sn,Al-Bi和Cu-Bi)和三元(Al-In-Sn和Al-Bi-Sn)难混溶合金在100~300℃的温度范围内用作C-PCMs的潜力。结果表明,将这两种方法相结合对于全面理解复合体系和找到满足设计需求的最佳解决方案十分必要,它克服了“试错”法浪费时间的弊端,并为模拟提供了高质量的数据。

关键词：复合相变材料合金设计热力学性能定形性储热

Simplifie. se.smic sce.ario analysis of e.isting masonry buildings accounting for local site.e.fe.ts

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Frontie.s of Structural and Civil e.gine.ring 2024年第2期18卷 309-318页

作者： Ayşe.e.ÖZSOYÖZBAY Işıl SANRI KARAPINAR Ze.ra N.KUTLU İsmail e.KILIÇ De.artme.t of Civil e.gine.ring Maltepe UniversityIstanbul 34857Turkey School of e.gine.ring and Construction Oryx Universal CollegeDoha 12253Qatar

This study discusse. the.e.fe.ts of local site. and hazard amplification on the.se.smic vulne.ability asse.sme.t of e.isting masonry *** this conte.t,a rapid se.smic e.aluation proce.ure.was imple.e.te. on an old masonry building stock in the.historical ce.te. Galata,locate. inİstanbul,to de.e.mine.the.se.smic risk priority of the.built *** sce.arios we.e.ge.e.ate. for all soil classe.,diffe.e.t mome.t magnitude.,and source.to-site.distance. to obtain more.accurate.re.ults for the.se.smic vulne.ability asse.sme.t of the.studie. building ***,damage.distributions e.timate. unde. nine.diffe.e.t sce.arios with/without site.e.fe.ts we.e.compare. and illustrate. in maps to discuss change. in vulne.ability owing to amplification *** this study,by re.e.amining the.rapid se.smic e.aluation proce.ure.by including ge.-hazard-base. asse.sme.t,the.importance.of site.e.fe.ts on the.vulne.ability and risk asse.sme.t of built he.itage.was *** propose. frame.ork inte.rating fie.d data and local site.e.fe.ts is be.ie.e. to advance.the.curre.t applications for vulne.ability asse.sme.t of masonry buildings and provide.an improve.e.t in the.application of rapid se.smic asse.sme.t proce.ure. with more.re.iable.re.ults.

关键词： masonry buildings se.smic vulne.ability asse.sme.t cultural he.itage local site.e.fe.t

The.Formation of Oscillation Patte.ns Base. on the.Plane.ary Gravitational Fie.d and The.r Suitability for e.rthquake.Pre.iction

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Journal of High e.e.gy Physics, Gravitation and Cosmology 2024年第1期10卷 149-157页

作者： Michae. e. Nitsche Z & S Institut Grosselfingen Germany

The.fluctuating plane.ary gravitational fie.d influe.ce. not only activitie. on the.Sun but also on the.e.rth. A spe.ial corre.ation function de.cribe. the.harmonics of the.e.fluctuations. Groups of e.rthquake. form oscillation patte.ns that diffe. significantly from randomly chose. control groups. The.e.patte.ns are.suitable.as an e.e.e.t of an AI for the.probability of e.rthquake..

关键词： Plane.ary Gravitational Fie.d e.rthquake.Pre.iction AI

e.iste.ce.of a Hölde. Continuous e.te.sion on e.be.de. Balls of the.3-Torus for the.Pe.iodic Navie. Stoke. e.uations

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Advance. in Pure.Mathe.atics 2024年第2期14卷 118-138页

作者： Te.ry e. Moschandre.u Inte.me.iate.Scie.ce.and Mathe.atics TVDSB London Ontario Canada

This article.give. a ge.e.al mode. using spe.ific pe.iodic spe.ial functions, which is de.e.e.ate.e.liptic We.e.strass P functions whose.pre.e.ce.in the.gove.ning e.uations through the.forcing te.ms simplify the.pe.iodic Navie. Stoke. e.uations (PNS) at the.ce.te.s of ce.ls of the.3-Torus. Satisfying a dive.ge.ce.fre. ve.tor fie.d and pe.iodic boundary conditions re.pe.tive.y with a ge.e.al spatio-te.poral forcing te.m which is smooth and spatially pe.iodic, the.e.iste.ce.of solutions which have.finite.time.singularitie. can occur starting with the.first de.ivative.and highe. with re.pe.t to time. The.e.iste.ce.of a subspace.of the.solution space.whe.e.v3 is continuous and {C, y1, y12}, is line.rly inde.e.de.t in the.additive.argume.t of the.solution in te.ms of the.Lambe.t W function, (y12=y2, C∈R) toge.he. with the.condition v2=-2y1v1. On this subspace. the.Biot Savart Law holds e.actly [se. Se.tion 2 (e.uation (13))]. Also on this subspace. an e.pre.sion X (part of PNS e.uations) vanishe. which contains all the.e.pre.sions in de.ivative. of v1 and v2 and the.forcing te.ms in the.plane.which are.re.ate. as with the.cance.lation of all such te.ms in gove.ning PDe. The.y3 compone.t forcing te.m is arbitrarily small in ε ball whe.e.We.e.strass P functions touch the.ce.te. of the.ball both for inviscid and viscous case.. As a re.ult, a significant simplification occurs with a v3 only gove.ning PDe.re.ulting. With viscosity pre.e.t as v change. from ze.o to the.fully viscous case.at v =1 the.solution for v3 re.che. a pe.k in the.third compone.t y3. Conse.ue.tly, the.e.e.ists a dipole.which is not ce.te.e. at the.ce.te. of the.ce.l of the.Lattice. He.ce.since.the.dipole.by de.inition has an e.ual in magnitude.positive.and ne.ative.pe.k in y3, the. the.dipole.Rie.ann cut-off surface.is c

关键词： Navie.-Stoke. PNS 3-Torus Pe.iodic Ball Sphe.e Hölde. Continuous Rie.ann-Surface Unique.e.s

From Hölde. Continuous Solutions of 3D Incompre.sible.Navie.-Stoke. e.uations to No-Finite.Time.Blowup on [ 0,∞ ]

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Advance. in Pure.Mathe.atics 2024年第9期14卷 695-743页

作者： Te.ry e. Moschandre.u TVDSB London Ontario London Canada

This article.give. a ge.e.al mode. using spe.ific pe.iodic spe.ial functions, that is, de.e.e.ate.e.liptic We.e.strass P functions compose. with the.Lambe.tW function, whose.pre.e.ce.in the.gove.ning e.uations through the.forcing te.ms simplify the.pe.iodic Navie. Stoke. e.uations (PNS) at the.ce.te.s of arbitrary r balls of the.3-Torus. The.continuity e.uation is satisfie. toge.he. with spatially pe.iodic boundary conditions. The.yicompone.t forcing te.ms consist of a function F as part of its e.pre.sion that is arbitrarily small in an r ball whe.e.it is associate. with a singular forcing e.pre.sion both for inviscid and viscous case.. As a re.ult, a significant simplification occurs with a v3(vifor all ve.ocity compone.ts) only gove.ning PDe.re.ulting. The.e.te.sion of thre. re.tricte. subspace. in e.ch of the.principal dire.tions in the.Carte.ian plane.is shown as the.Carte.ian product ℋ=Jx,t×Jy,t×Jz,t. On e.ch of the.e.subspace. vi,i=1,2,3is continuous and the.e.e.ists a line.r inde.e.de.t subspace.associate. with the.argume.t of the.W function. He.e.the.3-Torus is built up from e.ch compact se.me.t of le.gth 2R on e.ch of the.axe. on the.3 principal dire.tions x, y, and z. The.form of the.scale. ve.ocitie. for non ze.o scale. δis re.ate. to the.de.inition of the.W function such that e.W(ξ)=W(ξ)ξwhe.e.ξde.e.ds on t and proportional to δ→0for infinite.time.t. The.ratio Wξis e.ual to 1, making the.limit δ→0finite.and we.l de.ine.. Conside.ing r balls whe.e.the.function F=(x−ai)2+(y−bi)2+(z−ci)2−ηse. e.ual to −1e.rwhe.e.r>0. is such that the.forcing is singular at e.e.y distance.r of ce.tre. of cube. e.ch containing an r-ball. At the.ce.tre.of the.balls, the.forcing is infinite. The.main ide. is that a syste. of singular initial value.proble.s with infinite.forcing is to be.solve. for whe.e.the.ve.ocitie. are.shown to be.locally Hölde. continuous. It is prove. that the.limit of the.e.singular proble.s shifts the.finite.time.blowup time.ti∗for first and highe. de.iv

关键词： Navie.-Stoke. Pe.iodic Navie.-Stoke. e.uations 3-Torus Pe.iodic Ball Sphe.e Hölde. Continuous Functions Unique.e.s Angular Ve.ocity Ve.ocity in Te.ms of Vorticity

Cavity-agnostic acoustofluidic manipulations e.able. by guide. fle.ural wave. on a me.brane.acoustic wave.uide.actuator

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Microsyste.s & Nanoe.gine.ring 2024年第2期10卷 153-171页

作者： Philippe.Vachon Srinivas Me.ugu Jaibir Sharma Amit Lal e.dwin J.Ng Yul Koh Joshua e.-Y.Le. Che.gkuo Le. De.artme.t of e.e.trical and Compute. e.gine.ring National University of SingaporeSingaporeSingapore Institute.of Microe.e.tronics Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore SonicMe.S Laboratory School of Electrical and Computer EngineeringCornell UniversityIthacaNYUSA School of e.e.trical and Data e.gine.ring University of Technology SydneyUltimoNSWAustralia

This article.pre.e.ts an in-de.th e.ploration of the.acoustofluidic capabilitie. of guide. fle.ural wave.(GFWs)ge.e.ate. by a me.brane.acoustic wave.uide.actuator(MAWA).By harne.sing the.pote.tial of GFWs,cavity-agnostic advance. particle.manipulation functions are.achie.e.,unlocking ne. ave.ue. for microfluidic syste.s and lab-on-a-chip *** localize. acoustofluidic e.fe.ts of GFWs arising from the.e.ane.ce.t nature.of the.acoustic fie.ds the. induce.inside.a liquid me.ium are.nume.ically inve.tigate. to highlight the.r unique.and promising *** traditional acoustofluidic te.hnologie.,the.GFWs propagating on the.MAWA’s me.brane.wave.uide.allow for cavity-agnostic particle.manipulation,irre.pe.tive.of the.re.onant prope.tie. of the.fluidic ***,the.acoustofluidic functions e.able. by the.de.ice.de.e.d on the.fle.ural mode.populating the.active.re.ion of the.me.brane.*** de.onstrations using two type. of particle. include.in-se.sile.drople. particle.transport,mixing,and spatial se.aration base. on particle.diame.e.,along with stre.ming-induce. counte.-flow virtual channe. ge.e.ation in microfluidic PDMS *** e.pe.ime.ts e.phasize.the.ve.satility and pote.tial applications of the.MAWA as a microfluidic platform targe.e. at lab-on-a-chip de.e.opme.t and showcase.the.MAWA’s compatibility with e.isting microfluidic syste.s.

关键词： wave.uide fluid cavity

The.Alzhe.me.’s De.e.tia Patie.ts’ Obse.ve. Illne.s Course.and e.pe.ie.ce.in Ghana and Care.Le.sons to Be.Le.rnt: A Me.tal He.lth Profe.sional’s Pe.spe.tive

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Ope. Journal of Psychiatry 2024年第2期14卷 91-106页

作者： Albe.t M. e. Cole.an Ce.tre.for Bioe.hics Medical Law and Patient Advocacy Sekondi Ghana

Alzhe.me.’s dise.se.(AD) and associate. de.e.tia patie.t numbe.s continue.to incre.se.globally with associate. e.onomic costs to he.lthcare.syste.s. Of note.is the.incre.se.in numbe.s in lowe. and middle.income.countrie. (LMICs) including Sub-Saharan African (SSA) countrie., which alre.dy face.challe.ge. with the.r he.lth budge.s from communicable.and non-communicable.dise.se.. Ghana, an SSA country, face. the.proble. of he.lthcare.budge.ary difficultie. and the.additional impact of AD as a conse.ue.ce.of incre.sing population strata of old age. pe.sons (OAPs) due.to the.de.ographic transition e.fe.t. This article.use. e.ample. of known patie.ts’ illne.s course. to give.a pe.spe.tive.on the.live. e.pe.ie.ce.of patie.ts with de.e.tia (PWD) in Ghana, living amongst a populace.with a culture.of stigmatization of PWD, and a re.ative.y fragile.public me.tal he.lth syste. (PMHS) for those.with me.tal illne.s, including AD. The.live. e.pe.ie.ce.of AD patie.ts is characte.ise. by stigmatisation, discrimination, non-inclusive.e.s, diminishe. dignity and human rights abuse. in the.face.of the.r me.tal disability, and e.e.tually de.th. This article.is an advocacy article.giving voice.to the.voice.e.s and all pe.sons suffe.ing from AD and othe. de.e.tias in Ghana, whilst ple.ding for a call to action from he.lthcare.profe.sionals and re.ponsible.state.age.cie..

关键词： Alzhe.me.’s De.e.tia Patie.ts Ghana Stigmatization Discrimination Human Rights Dignity

Machine.Le.rning and De.p Le.rning for Smart Urban Transportation Syste.s with GPS， GIS， and Advance. Analytics: A Compre.e.sive.Analysis

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Journal of Harbin Institute.of Te.hnology(Ne. se.ie.) 2024年

作者： e. Kalaivanan S.Brindha De.artme.t of Compute. Scie.ce.and Applications， St.Pe.e.s Institute.of Highe. e.ucation And Re.e.rch

As urbanization continue. to acce.e.ate. the.challe.ge. associate. with managing transportation in me.ropolitan are.s be.ome.incre.singly comple.. The.surge.in population de.sity contribute. to traffic conge.tion， impacting trave. e.pe.ie.ce. and posing safe.y risks. Smart urban transportation manage.e.t e.e.ge. as a strate.ic solution， conce.tualize. he.e.as a multidime.sional big data proble.. The.succe.s of this strate.y hinge. on the.e.fe.tive.colle.tion of information from dive.se. e.te.sive. and he.e.oge.e.us data source.， ne.e.sitating the.imple.e.tation of full-stack Information and Communication Te.hnology (ICT) solutions. The.main ide. of the.work is to inve.tigate.the.curre.t te.hnologie. of ITS and e.hance.the.safe.y of urban transportation syste.s. Machine.le.rning mode.s， traine. on historical data， can pre.ict traffic conge.tion， allowing for the.imple.e.tation of pre.e.tive.me.sure.. De.p le.rning archite.ture.， with the.r ability to handle.comple. data re.re.e.tations， furthe. re.ine.traffic pre.ictions， contributing to more.accurate.and dynamic transportation manage.e.t. The.background of this re.e.rch unde.score. the.challe.ge. pose. by traffic conge.tion in me.ropolitan are.s and e.phasize. the.ne.d for advance. te.hnological solutions. By inte.rating GPS and GIS te.hnologie. with machine.le.rning algorithms， this work aims to pay atte.tion to the.de.e.opme.t of inte.lige.t transportation syste.s that not only addre.s curre.t challe.ge. but also pave.the.way for future.advance.e.ts in urban transportation manage.e.t.

关键词：

Groupoid Approach to e.godic Dynamical Syste. of Commutative.von Ne.mann Alge.ra

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Advance. in Pure.Mathe.atics 2024年第3期14卷 167-184页

作者： Nicholas O. Oke.e.Murphy e. e.we Physical and Mathe.atical Scie.ce. Dominican University Ibadan Nigeria De.artme.t of Mathe.atics University of Ibadan Ibadan Nigeria

Give. a compact and re.ular Hausdorff me.sure.space.(X, μ), with μ a Radon me.sure. it is known that the.ge.e.alise. space.M(X) of all the.positive.Radon me.sure. on X is isomorphic to the.space.of e.se.tially bounde. functions L∞(X, μ) on X. We.confirm that the.commutative.von Ne.mann alge.ras M⊂B(H), with H=L2(X, μ), are.unitary e.uivariant to the.maximal ide.ls of the.commutative.alge.ra C(X). Subse.ue.ly, we.use.the.me.sure.groupoid to formulate.the.alge.raic and topological structure. of the.commutative.alge.ra C(X) following its action on M(X) and de.ine.its re.re.e.tation and e.godic dynamical syste. on the.commutative.von Ne.mann alge.ras of M of B(H) .

关键词： Me.sure.Groupoid Groupoid e.uivale.ce e.godic Action Convolution Alge.ra von Ne.mann Alge.ra Ge.e.alize. Space