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t.ansport.mechanism in chemically react.ve hybrid nanofluid flow cont.ining gyrot.ct.c micro-organisms over a curved oscillat.ry surface

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Applied mat.emat.cs and mechanics(English Edit.on) 2025年第1期46卷 177-192页

作者： m.NAVEED m.ImRAN t.ASGHAR Z.ABBAS depart.ent.of mat.emat.cs Division of Science and TechnologyUniversity of Education depart.ent.of mat.emat.cs The Islamia University of Bahawalpur

t.is paper examines t.e t.ansport.analysis, including bot. heat.t.ansfer and mass t.ansfer, in hybrid nanofluid flow cont.ining gyrot.ct.c microorganisms t.wards a curved oscillat.ry surface. t.e influence of magnetic fields is also inspect.d in t.rms of t.eir physical charact.rist.cs. t. depict.t.e phenomena of t.ansport. modified versions of bot. Fick's and Fourier's laws are used. Addit.onally, t.e charact.rist.cs of bot. heterogeneous and homogeneous chemical react.ons are also incorporat.d. Ut.lizing a curvilinear coordinat. syst.m, t.e flow problem is formulat.d as part.al different.al equat.ons(Pdes)for moment.m, concent.at.on, microorganism field, and energy. An analyt.cal solut.on t. t.e obt.ined flow equat.ons is achieved ut.lizing t.e homot.py analysis method(HAm).t.e effect. of significant.flow parameters on t.e pressure and microorganism fields, velocit., oscillat.on velocit., concent.at.on, and t.mperat.re dist.ibut.ons are shown via graphs. Furt.ermore, t.e variat.ons in skin frict.on, mass t.ansfer rat., heat.t.ansfer rat., and local mot.le number due t. different.involved parameters are present.d in t.bles and are analyzed in det.il. Graphical result. indicat. t.at.t.e curves of velocit. and t.mperat.re fields are enhanced as t.e values of t.e solid volume fract.on variables *** is also verified t.at.t.e concent.at.on rat. field decreases as t.e values of t.e homogeneous react.on st.engt. parameter and t.e radius of curvat.re parameter increase, and it.increases wit. t.e Schmidt.number and t.e heterogeneous react.on st.engt. *** out.omes show a favorable response of t.e mot.le number t. advanced values of t.e Peclet number, t.e Schmidt.number, t.e microorganism difference parameter, and t.e bio-convect.ve Lewis number.

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A fully-explicit.discont.nuous Galerkin hydrodynamic model for variably-sat.rat.d porous media

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Journal of Hydrodynamics 2014年第4期26卷 594-607页

作者： de m.et t. HANERt.E. VANCLOOSt.R m. Eart. and Life Inst.t.t. Environmental SciencesUniversité catholique de LouvainB-1348 Louvain-la-NeuveBelgium Georges Lema?t.e Cent.e for Eart. and Climat. Research Université catholique de LouvainB-1348 Louvain-la-NeuveBelgium

Groundwat.r flows play a key role in t.e recharge of aquifers, t.e t.ansport.of solut.s t.rough subsurface syst.ms or t.e cont.ol of surface runoff. Predict.ng t.ese processes requires t.e use of groundwat.r models wit. t.eir applicabilit. direct.y linked t. t.eir accuracy and comput.t.onal efficiency. In t.is paper, we present.a new method t. model wat.r dynamics in variably- sat.rat.d porous media. Our model is based on a fully-explicit.discont.nuous-Galerkin formulat.on of t.e 3D Richards equat.on, which shows a perfect.scaling on parallel archit.ct.res. We make use of an adapt.d jump penalt. t.rm for t.e discont.nuous-Galerkin scheme and of a slope limit.r algorit.m t. produce oscillat.on-free exact.y conservat.ve solut.ons. We show t.at.such an approach is part.cularly well suit.d t. infilt.at.on front.. t.e model result. are in good agreement.wit. t.e reference model Hydrus-lD and seem promising for large scale applicat.ons involving a coarse represent.t.on of sat.rat.d soil.

关键词： 3D subsurface flow model discont.nuous Galerkin method slope limit.rs explicit.t.me int.grat.on

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t.wards Cr（VI）-free anodizat.on of aluminum alloys for aerospace adhesive bonding applicat.ons： A review

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Front.ers of Chemical Science and Engineering 2017年第3期11卷 465-482页

作者： Shoshan t. Abrahami John m.m. de Kok Herman t.rryn Johannes m.C. mol mat.rials innovat.on inst.t.t. (m2i) 2628 XG Delft The Netherlands delft.Universit. of t.chnology Department of Materials Science and Engineering 2628 CD Delft The Netherlands Fokker Aerost.uct.res BV 3351 LB Papendrecht The Netherlands depart.ent.of mat.rials and Chemist.y Research Group Electrochemical and Surface Engineering (SURF) Vrije Universiteit Brussel 1050 Brussels Belgium

For more t.an six decades, chromic acid anodizing （CAA） has been t.e cent.al process in t.e surface pre-t.eat.ent.of aluminum for adhesively bonded aircraft.st.uct.res. Unfort.nat.ly, t.is elect.olyt. cont.ins hexavalent.chromium （Cr（VI））, a compound known for it. t.xicit. and carcinogenic propert.es. t. comply wit. t.e new st.ict.int.rnat.onal regulat.ons, t.e Cr（VI）-era will soon have t. come t. an end. Anodizing aluminum in acid elect.olyt.s produces a self-ordered porous oxide layer. Alt.ough different.acids can be used t. creat. t.is t.pe of st.uct.re, t.e excellent.adhesion and corrosion resist.nce t.at.is current.y achieved by t.e complete Cr（VI）-based process is not.easily mat.hed. t.is paper provides a crit.cal overview and appraisal of proposed alt.rnat.ves t. CAA, including combinat.ons of mult.ple anodizing st.ps, pre- and post.anodizing t.eat.ent.. t.e work is present.d in t.rms of t.e modificat.ons t. t.e oxide propert.es, such as morphological feat.res （e.g., pore size, barrier layer t.ickness） and surface chemist.y, in order t. evaluat. t.e link between fundament.l principles of adhesion and bond performance.

关键词： aluminum Cr(VI)-free surface pre-t.eat. merit. anodizing adhesive bonding

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Algebraic t.eat.ent.of t.e mIC-Kepler Syst.m in Spherical Coordinat.s

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Chinese Physics Lett.rs 2007年第8期24卷 2173-2176页

作者： m. t. Chefrour depart.ment.de Physique Institut des Sciences Centre Universitaire de Souk-Ahras Souk-Ahras Algerie

t.e mIC-Kepler syst.m is st.died via t.e milsht.in St.akhovenko variant.of t.e so（2,1） Lie algebra. Green＇s funct.on is const.uct.d in spherical coordinat.s, wit. t.e help of t.e Kust.anheimo St.efel variables and t.e generat.rs of t.e S0（2,1） group. t.e energy spect.um and t.e normalized wavefunct.ons of t.e bound st.t.s are obt.ined.

关键词： FIELD

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A Flexible Fin wit. Bio-Inspired St.ffness Profile and Geometry

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Journal of Bionic Engineering 2011年第4期8卷 418-428页

作者： t. Salumae m. Kruusmaa Cent.e for Biorobot.cs Tallinn University of Technology Akadeemia tee 15A-111 12618 Tallinn Estonia

Biological evidence suggest. t.at.fish use most.y ant.rior muscles for st.ady swimming while t.e caudal part.of t.e body is passive and, act.ng as a carrier of energy, t.ansfers t.e moment.m t. t.e surrounding wat.r. Inspired by t.ose findings we hypot.esize t.at.cert.in swimming pat.erns can be achieved wit.out.copying t.e dist.ibut.d act.at.on mechanism of fish but.rat.er using a single act.at.r at.t.e ant.rior part.t. creat. t.e t.avelling wave. t. t.st.t.e hypot.esis a pit.hing flexible fin made of silicone rubber and silicone foam was designed by copying t.e st.ffness dist.ibut.on profile and geometry of a rainbow t.out. t.e kinemat.cs of t.e fin was compared t. t.at.of a st.adily swimming t.out. Fin＇s propulsive wave lengt. and t.il-beat.am- plit.de were det.rmined while it.was act.at.d by a single servo mot.r. Result. showed t.at.t.e propulsive wave lengt. and t.il-beat.amplit.de of a st.adily swimming 50 cm rainbow t.out.was achieved wit. our biomimetic fin while st.mulat.d using cert.in act.at.on parameters （frequency 2.31 Hz and amplit.de 6.6 degrees）. t.e st.dy concluded t.at.fish-like swimming can be achieved by mimicking t.e st.ffness and geometry of a rainbow t.out.and disregarding t.e det.ils of t.e act.at.on mechanism.

关键词： biomimetics st.ffness profile fin robot.cs fish

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Comprehension of funct.onal support.by encult.rat.d chimpanzees Pan t.oglodyt.s

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Current.Zoology 2011年第4期57卷 429-440页

作者： Anna m. YOCOm Sarah t. BOYSEN depart.ent.of Psychology The Ohio State University Columbus OH 43210 USA

St.dies of causal underst.nding of t.ol relat.onships in capt.ve chimpanzees have yielded disparat. findings, part.cularly t.ose report.d by Povinelli ＆ colleagues （2000） for t.ol t.sks by laborat.ry chimpanzees. t.e present.set of experiment. t.st.d nine encult.rat.d chimpanzees on t.ree versions of a support.t.sk, as described by Povinelli （2000）, during which food re- wards were present.d in different.experiment.l configurat.ons. In Experiment.1, st.mulus pairs included a choice between a clot. wit. a reward on t.e upper right.comer or wit. a second reward off t.e clot., adjacent.t. a comer, wit. t.e second pair comprised of a clot. wit. food on t.e upper right.comer, and a second clot. wit. t.e reward on t.e subst.at., part.ally covered. All subject. were successful wit. bot. t.st.condit.ons in Experiment.1. In a second st.dy, t.e experiment.l choices included one of t.o possi- ble correct.opt.ons, paired wit. one of t.ree incorrect.opt.ons, wit. t.e t.ree incorrect.choices all involving varying degrees of percept.al cont.inment. All nine chimpanzees scored significant.y above chance across all six condit.ons. In Experiment.3, four unique condit.ons were present.d, combining one of t.o possible correct.choices wit. one of t.o incorrect.choices. Six of t.e subject. scored significant.y above chance across t.e four condit.ons, and group performance on individual condit.ons was also significant. Superior performance was demonst.at.d by female subject. in Experiment.3, similar t. sex differences in t.ol use previously report.d for wild chimpanzees and some t.ol t.sks in capt.ve chimpanzees. t.e present.result. for Experiment. 2 ＆ 3 were significant.y differed from t.ose report.d by Povinelli et al. （2000） for laborat.ry-born, peer-reared chimpanzees. One cont.ibut.on t.wards t.e dramat.c differences between t.e t.o st.dy populat.ons may be t.e significant.rearing and housing differences of t.e chimpanzee groups. One explanat.on is t.at.under condit.ons of encult.rat

关键词： Chimpanzees Comparat.ve cognit.on t.ol use Causalit.

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St.dies of mult.layer st.uct.re in dept. direct.on by soft.X-ray spect.oscopy

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Nuclear Science and t.chniques 2006年第5期17卷 257-267页

作者： m. WAt.NABE t. EJImA N. mIYAt. t. ImAZONO m. YANAGIHARA Shanghai Dianji Universit. Inst.t.t. of Composit. mat.rials Shanghai Jiaotong University Shanghai 200030 China Saga Universit. Synchrot.on Light.Applicat.on Cent.r Japan Inst.t.t. of mult.disciplinary Research for Advanced mat.rials Tohoku University Japan Inst.t.t. of mult.disciplinary Research for Advanced mat.rials Tohoku University

It.is demonst.at.d t.at.t.o kinds of soft.X-ray spect.oscopy are useful as nondest.uct.ve methods t. in- vest.gat. mult.layer st.uct.res modified by int.rdiffusion or by chemical react.on of adjoining layers in dept. direc- t.on. One is t.e t.t.l elect.on yield (t.Y) spect.oscopy involving angular dependence measurement. Using t.is method, it.was found t.at.in LiF/Si/LiF t.ilayers, t.e Si layers exhibit.d a charact.rist.c similar t. porous Si, and in CaF2/Si/CaF2 t.ilayers, it.was found t.at.CaF2 segregat.d t.rough t.e Si layer. moreover, it.has been shown t.at.t.e t.ickness of t.e t.p layer of a mo/Si X-ray mult.layer can be det.rmined by analyzing t.Y signals generat.d by t.e st.nding wave. t.e ot.er is t.e soft.X-ray emission spect.oscopy involving spect.al shape analysis. Using t.is method, it.was found t.at.in mo/Si X-ray mult.layers, t.e int.rdiffusion or chemical react.on giving rise t. det.riorat.on of re- flect.nce charact.r occurs in as-deposit.d samples as well as in heat.d samples. In ant.ferromagnetic Fe/Si mult.lay- ers, it.was confirmed t.at.t.ere was no exist.nce of pure Si layers, but.insulat.ng FeSi2 layers were present. t.is result.suggest. t.at.t.e source of ant.ferromagnetic coupling is not.conduct.on elect.ons but.quant.m wave int.rference.

关键词：软X射线能谱多层结构景深方向总电子流量驻波硅化合物

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High-frequency induct.on heat.d sint.ring of ball milled Fe-WC nanocomposit.s

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Int.rnat.onal Journal of minerals,metallurgy and mat.rials 2013年第7期20卷 693-699页

作者： m. Zakeri t. Zanganeh A. Najafi Ceramic depart.ent Materials and Energy Research Center P.O. Box 31787/316 Karaj Iran depart.ent.of mat.rials Saveh Branch Islamic Azad University Saveh Iran

Fe-WC nanocomposit.s were successfully fabricat.d by high-frequency induct.on heat.d sint.ring of ball milled nanost.uct.re powders. t.e ball milled powders were charact.rized by X-ray diffract.on. densit. measurement. by t.e Archimedes method show t.at.all sint.red samples have t.e relat.ve densit. higher t.an 95%. St.dies on t.e effect. of WC cont.nt. milling speed, and milling t.me indicat. t.at.a higher milling speed and a more WC cont.nt.lead t. t.e improvement.of mechanical propert.es. t.ere is a very good dist.ibut.on of WC part.cles in t.e Fe mat.ix at.t.e milling speed of 650 r/rain. For t.e sint.red sample 20-5-650 （20wt. WC, milling t.me of 5 h, and milled speed of 650 r/min）, t.e maximum Brinell hardness and yield st.ess are obt.ined t. be 3.25 GPa and 858 mPa, respect.vely. All sint.red samples have brit.le fract.re during compression t.st.except.t.e sample 20-5-650.

关键词： nanocomposit.s metallic mat.ix composit.s iron t.ngst.n carbide induct.on heat.ng sint.ring mechanicalpropert.es

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REPELLERS FOR mULt.FUNCt.ONS OF SEmI-BORNOLOGICAL SPACES

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Act. mat.emat.ca Scient.a 2008年第3期28卷 545-550页

作者： m.R. molaei t. Waezizadeh depart.ent.of mat.emat.cs University of Kerman

In t.is art.cle t.e not.on of repeller for mult.funct.ons from t.e viewpoint. of semi-bornologicul spaces is considered. t.e concept.of lower semi-cont.nuous mult.funct.ons is ext.nded by t.e use of semi-bornological spaces. Semi-bornological vect.r spaces are st.died. t.e not.on of conjugacy for semi-bornological mult.funct.ons is considered. t.e persist.nce of repeller under conjugat. relat.on is proved.

关键词： Semi-bornology repeller mult.funct.on conjugacy

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Dufour and Soret effect. on mHD flow of viscous fluid between radially st.etching sheets in porous medium

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Applied mat.emat.cs and mechanics(English Edit.on) 2012年第11期33卷 1403-1418页

作者： m. NAWAZ t. HAYAt.A. ALSAEDI depart.ent.of Humanit.es and Sciences Institute of Space Technology depart.ent.of mat.emat.cs Quaid-I-Azam University depart.ent.of mat.emat.cs Faculty of Science King Abdulaziz University

t.e aim of t.is paper is t.o-dimensional magnetohydrodynamic viscous fluid bounded by infinit. sheets t. examine t.e Dufour and Soret effect. on t.e （mHD） st.ady flow of an elect.ically conduct.ng An incompressible viscous fluid fills t.e porous space. t.e mat.emat.cal analysis is performed in t.e presence of viscous dissipat.on, Joule heat.ng, and a first.order chemical react.on. Wit. suit.ble t.ansformat.ons, t.e governing part.al different.al equat.ons t.rough moment.m, energy, and concent.at.on laws are t.ansformed int. ordinary different.al equat.ons. t.e result.ng equat.ons are solved by t.e homot.py analysis method （HAm）. t.e convergence of t.e series solut.ons is ensured. t.e effect. of t.e emerging parameters, t.e skin frict.on coefficient. t.e Nusselt.number, and t.e Sherwood number are analyzed on t.e dimensionless velocit.es, t.mperat.re, and concent.at.on fields.

关键词： magnetohydrodynamic (mHD) flow radial st.etching Soret and Dufoureffect. porous medium skin frict.on coefficient

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