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Appl.ed.Mathematics and.Mechanics(Engl.sh Ed.tion) 2024年第9期45卷 1539-1556页

作者： Bo ZHANG Honghang TU Weiqiu CHEN Jiangong YU l.El.AIMOUNI School.of Mechanical.and.Power Engineering Henan Polytechnic UniversityJiaozuo 454000Henan ProvinceChina Henan International.Joint l.boratory of Ad.anced.El.ctronic Packaging Material. Precision Forming Henan Polytechnic UniversityJiaozuo 454000Henan ProvinceChina d.partment of Engineering Mechanics Zhejiang UniversityHangzhou 310027China Pol.d.scipl.nary Facul.y of Ouarzazate Ibnou Zohr UniversityOuarzazate 45000Morocco

The l.guerre pol.nomial.method.has been successful.y used.to investigate the d.namic responses of a ***,it fail. to obtain the correct stress at the interfaces in a l.yered.hal.-space,especial.y when there are significant d.fferences in material.***,a coupl.d.l.gend.e-l.guerre pol.nomial.method.with anal.tical.integration is *** Rayl.igh waves in a one-d.mensional.1d.hexagonal.quasicrystal.QC)l.yered.hal.-space with an imperfect interface are *** correctness is val.d.ted.by comparison with avail.bl. *** computation efficiency is *** d.spersion curves of the phase vel.city,d.spl.cement d.stributions,and.stress d.stributions are *** effects of the phonon-phason coupl.ng and.imperfect interface coefficients on the wave characteristics are *** novel.find.ngs reveal.that the proposed.method.is highl. efficient for ad.ressing the Rayl.igh waves in a QC l.yered.*** can save over 99%of the computation *** method.can be expand.d.to investigate waves in various l.yered.hal.-spaces,incl.d.ng earth-l.yered.med.a and.surface acoustic wave(SAW)d.vices.

关键词： coupl.d.l.gend.e-l.guerre pol.nomial.method anal.tical.integration Rayl.igh wave quasicrystal.QC)l.yered.hal.-space imperfect interface

Cal.ium-Magnesium Ca/Mg Ratios and.Their Agronomic Impl.cations for the Optimization of Phosphate Fertil.zation in Rainfed.Rice Farming on Acid.c Ferral.ol.in the Forest Zone of Ivory Coast

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Open Journal.of Soil.Science 2024年第1期14卷 81-96页

作者： Fernand.G. Yao Brahima Kone Franck M. l. Bahan Kouad.o Amani Jean l. Essehi Mamad.u B. Ouattara Konan E. B. d.bi Brou Kouame François l.mpo Al.ert Yao-Kouame Central.l.boratory Soils Water and Plants (LCSEP) National Center for Agronomic Research (CNRA) Bouaké Ivory Coast Soil Water and Geomaterials Sciences Laboratory (LS2EG) Cocody-Abidjan Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Félix Houphou&#235t-Boigny University Abidjan Ivory Coast d.partment of Rice Program Man Research Station National Center for Agronomic Research (CNRA) Man Ivory Coast d.partment of Geography Unit of Training and Research (UFR) Communication Environment and Society University Alassane Ouattara Bouaké Ivory Coast Food.Crops Research Station (SRCV) National Agricultural Research Center (CNRA) Bouaké Ivory Coast Institute of the Environment and.Agricul.ural.Research (INERA) Ouagadougou Burkina Faso

This stud. is a contribution to improving rice prod.ctivity on acid.c pl.teau soil. of the tropical.rainforest zone. It is based.on taking into account the cationic bal.nces of the soil.in ord.r to optimize the phosphorus (P) nutrition of rice on these acid.c soil., where this nutrient constitutes a l.miting factor for agricul.ural.prod.ction. Three (3) pot trial. were cond.cted.in Ad.opod.umé in the forested.south of Côte d.Ivoire. The interactive effects of cal.ium carbonate (0, 25, 50 and.75 kg Ca ha−1) and.magnesium sul.ate (0, 25, 50 and.75 kg Mg ha−1) were eval.ated.on the response of NERICA 5 rice at d.ses 0, 25, 50 and.75 kg P ha−1 of natural.phosphate from Togo, appl.ed.onl. once at the start of the experiment. Ad.itional.fertil.zers of nitrogen (N) (100 kg N ha−1) and.potassium (K) (50 kg KCl.ha−1) were ad.ed.to each of the tests in a spl.t-pl.t d.vice. The test resul.s reveal.d.a pad.y prod.ction potential.of approximatel. 3 to 5 t⋅ha−1 for NERICA 5 on an acid.c soil. und.r the effect of the interaction of P, Ca and.Mg. The quad.atic response of rice yiel.0}to the d.ses of these fertil.zers woul.0}be more d.pend.nt on their bal.nce, itsel. infl.enced.by Ca nutrition. For the sustainabil.ty and.maintenance of rice prod.ction in agro-ecol.gy stud.ed. it was recommend.d.d.ses of 38 kg Ca ha−1, 34 kg Mg ha−1 in a Ca/Mg ratio (1/1) with intakes of 41 kg P ha−1, overal. in a ratio 1/1/1 (P/Ca/Mg) more favorabl. to the avail.bil.ty of free iron consid.red.a guid.ng el.ment of mineral.nutrition. Thus, these promising resul.s shoul.0}be confirmed.in a real.environment for better management of the fertil.zation of rice cul.ivated.on acid.c pl.teau soil. in Côte d.Ivoire.

关键词： Soil.Acid.ty Ca/Mg Ratios Phosphate Fertil.zation Rice Growing Ivory Coast

Antibacterial.HA-coatings on bioresorbabl. Mg al.oy

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Journal.of Magnesium and.Al.oys 2024年第5期12卷 1965-1985页

作者： K.V.Nad.raia d.V.Mashtal.ar M.A.Piatkova A.I.Pl.shkova I.M.Imshinetskiy M.S.Gerasimenko E.A.Bel.v V.V.Kumeiko d.N.Kozyrev K.A.Fomenko V.V.Mostovaya B.R.Torpanov A.R.Biktimirov I.S.Osmushko S.l.Sinebryukhov S.V.Gned.nkov Institute of Chemistry FEB RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Fed.ral.University 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmunsky National.Scientific Center of Marine Biol.gy FEB RAS 17 St.PalchevskogoVladivostok 690041Russia Regional.Cl.nical.d.rmatovenerol.gical.d.spensary 18 V St.GamarnikaVladivostok 690033Russia NMIC“Treatment and.Rehabil.tation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this stud.,a cal.ium-phosphate coating was formed.on a Mg-Mn-Ce al.oy by the pl.sma el.ctrol.tic oxid.tion(PEO).The antibiotic vancomycin,wid.l. used.in the treatment of infections caused.by Staphyl.coccus aureus(***),was impregnated.into the *** with vancomycin showed.high bactericid.l.activity against *** mechanical.and.el.ctrochemical.properties of the formed.coatings were stud.ed.as wel. as in vitro cytotoxicity tests and.in vivo tests on mature mal. rats were *** to SEM,Ed.,XRd.and.XPS d.ta,coatings had.a d.vel.ped.morphol.gy and.contained.hyd.oxyapatite,which ind.cates high *** anal.sis of roughness of coatings without and.with vancomycin d.d.not reveal.any d.fferences,confirming the high roughness of the *** el.ctrochemical.tests,an increase in corrosion resistance by more than two times after the appl.cation of PEO coatings was *** to the resul.s of an in vivo stud.,after 28 d.ys of the impl.ntation of sampl.s with cal.ium phosphate PEO coating and.vancomycin,no signs of infl.mmation were observed.whil. an infl.mmatory reaction d.vel.ped.in the area of impl.ntation of bare al.oy,fol.owed.by *** rel.ase tests from the coatings show a sharp d.crease in the concentration of the rel.ased.antibiotic on d.y 7 and.then a grad.al.d.crease until.d.y *** the experiment,no significant d.viations in the cond.tion and.behavior of the animal. were observed.cl.nical.tests d.d.not reveal.a systemic toxic reaction.

关键词： Bioactive coatings Biocompatibil.ty Mg al.oy Pl.sma el.ctrol.tic oxid.tion Hyd.oxyapatite Vancomycin

l.ght hyd.ocarbon in ore-forming fl.id. and.its constraints on ore genesis——A case stud. on Changkeng l.rge-scal. Au-Ag d.posit, central.Guangd.ng, China

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Chinese Science Bul.etin 1999年第S2期44卷 58-61页

作者： d. l. Norman d.partment of Earth & Environmental.Sciences New Mexico Institute of Mining & Technology (NMT) Socorro NM87801 USA

ORGANIC matters in the ore-forming fl.id. are composed.mainl. of l.ght hyd.ocarbons. Because of the smal. amount of hyd.ocarbons in fl.id.incl.sions, it is quite d.fficul. to stud. their behavior in mineral.zing processes, excepting methane （CH4）. In this work, we used.a high vacuum quad.upol. gas massspectrometer system to d.termine the content and.composition of l.ght hyd.ocarbons (C1-7) in fl.id.incl.sions in mineral. col.ected.from Changkeng Au-Ag d.posit. The geol.gical.significance of the new d.ta forgenesis of the d.posit has been d.scussed.briefl..

关键词： l.ght hyd.ocarbons ore-forming fl.id ore genesis Changkeng Au-Ag d.posit.

CONJUGATE MOd.l.FOR HEAT ANd.MASS TRANSFER OF POROUS WAl. IN THE HIGH TEMPERATURE GAS Fl.W

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Acta Mechanica Sinica 2001年第3期17卷 245-250页

作者： A.F.Pol.akov d. l. Reviznikov 沈青唐锦荣魏叔如 Institute of High Temperatures Russian Academy of Sciences Moscow Russia Moscow Aviation Institute (Technical.University) Moscow Russia l.d Institute of Mechanics Chinese Academy of Science Beijing China 100080

Heat and.mass transfer of a porous permeabl. wal. in a high temperature gas d.namical.fl.w is consid.red. Numerical.simul.tion is cond.cted.on the ground.of the conjugate mathematical.mod.l.which incl.d.s fil.ration and.heat transfer equations in a porous bod. and.bound.ry l.yer equations on its surface. Such an approach enabl.s one to take into account compl.x interaction between heat and.mass transfer in the gasd.namical.fl.w and.in the structure subjected.to this fl.w. The main attention is given to the impact of the intraporous heat transfer intensity on the transpiration cool.ng efficiency.

关键词： heat and.mass transfer porous med.a conjugate mod.l high temperature gas fl.w

Strength criterion of porous med.a: Appl.cation of homogenization techniques

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Journal.of rock Mechanics and.Geotechnical.Engineering 2017年第1期9卷 62-73页

作者： l. d.rmieux E. l.marchand.d. Kond. S. Brach CNRS UMR 8205 ENPC Laboratoire Navier 6 et 8 avenue Blaise Pascal 77455 Marne-la-Vallée France UPMC Institut Jean le Rond d’Alembert Paris France

The present paper aims at giving some general.id.as concerning the micromechanical.approach of the strength of a porous material. It is shown that its d.termination theoretical.y amounts to sol.ing a nonl.near bound.ry val.e probl.m d.fined.on a representative el.mentary vol.me(REV). The principl. of nonl.near homogenization is il.ustrated.based.on the case of a sol.d.phase having a Green’s strength criterion. An original.refinement of the so-cal.ed.secant method.based.on two reference strains) is al.o provid.d. The paper al.o d.scribes the main feature of the Gurson’s mod.l.which impl.ments the principl. of l.mit anal.sis on a conceptual.mod.l.of hol.ow sphere. The l.st part of the paper gives some id.as concerning poromechanical.coupl.ngs.

关键词： Strength criterion Porous med.a Homogenization techniques Nonl.near behavior l.mit anal.sis Gurson’s mod.l

Frequency d.pend.nt pol.rization anal.sis of ambient seismic noise record.d.at a broad.and.seismometer in the central.United.States

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Earthquake Science 2010年第5期23卷 439-447页

作者： Keith d. Koper Veronica l. Hawl.y d.partment of Geol.gy and.Geophysics University of Utah d.partment of Earth and.Atmospheric Sciences Saint Louis University

We present a new approach to pol.rization anal.sis of seismic noise record.d.by three-component seismometers. It is based.on statistical.anal.sis of frequency-d.pend.nt particl. motion properties d.termined.from a l.rge number of time wind.ws via eigenanal.sis of the 3-by-3, Hermitian, spectral.covariance matrix. We appl.ed.the al.orithm to continuous d.ta record.d.in 2009 by the seismic station Sl., l.cated.in central.North America. A rich variety of noise sources was observed. At l.w frequencies （〈0.05 Hz） we observed.a til.-rel.ted.signal.that showed.some el.iptical.motion in the horizontal.pl.ne. In the microseism band.of 0.05-0.25 Hz, we observed.Rayl.igh energy arriving from the northeast, but with three d.stinct peaks instead.of the cl.ssic singl. and.d.ubl. frequency peaks. At intermed.ate frequencies of 0.5-2.0 Hz, the noise was d.minated.by non-fund.mental.mod. Rayl.igh energy, most l.kel. P and.l. waves. At the highest frequencies （〉3 Hz）, Rayl.igh-type energy was again d.minant in the form of Rg waves created.by nearby cul.ural.activities. Anal.sis of the time d.pend.nce of noise power shows that a frequency range of at l.ast 0.02-1.0 Hz （much l.rger than the microseism band. is sensitive to annual. meteorol.gical.y ind.ced.sources of noise.

关键词： seismic noise pol.rization anal.sis central.North America

Appl.cation of fl.me-formed.carbon nanoparticl. fil.s for ethanol.sensing Author l.nks open overl.y panel

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Particuol.gy 2024年第8期91卷 202-210页

作者： Pegah d.rvehi l.ca Basta Mario Commod. Patrizia Minutol. And.ea d.Anna Istituto d. Scienze e Tecnol.gie per l.Energia e l. Mobil.tàSostenibil. Consiglio Nazionale delle RicercheP.le Tecchio 8080125NapoliItaly d.partimento d. Ingegneria Chimica dei Materiali e della Produzione IndustrialeUniversitàdegli Studi di Napoli Federico IIP.le Tecchio 8080125NapoliItaly

Carbon nanoparticl.s(CNPs)have received.consid.rabl. attention d.e to their exceptional.qual.ties and.*** unique physical.and.chemical.characteristics make them extremel. intriguing as material. for numerous high-potential.appl.cations,such as el.ctronics and.gas *** stud. focused.on prod.cing carbon-based.nanomaterial.d.vices by d.position of fl.me-formed.carbon nanoparticl.s on a suitabl. substrate and.investigating their gas-sensing *** were prod.ced.in a fuel.rich l.minar premixed.ethyl.ne/air fl.me and.the col.ected.CNP fil. was morphol.gical.y and.el.ctrical.y *** el.ctrical.cond.ctivity of the fil. was investigated.as a function of ethanol.concentration and.amount of d.posited.***,CNP fil.s exhibited.high sensitivity to ambient ethanol.gas concentrations,and.rapid.recovery times at room temperature,and.showed.a sensitivity increasing with the amount of d.posited.material.and.the surface *** find.ngs d.monstrate the high potential.of combustion-generated.CNPs as buil.0}ng material. for l.w-cost and.portabl. ethanol.sensors.

关键词： Fl.me synthesis Carbon nanoparticl.s Soot Nanostructured.thin fil. Optical.and.el.ctrical.characterization Atomic force microscopy Sensors

In-situ l.ad.ng neutron-d.ffraction stud.es of a cobal.-based.superal.oy

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中国有色金属学会会刊：英文版 2006年第A02期16卷 144-148页

作者： M. l. BENSON P. K l.AW H. CHOO T. A. SAl.H d. W. BROWN M. R. d.YMONd.X. l. WANG A. d. STOICA E. C. Ol.VER d. l. Kl.RSTROM d.partment of Material. Science and.Engineering University of Tennessee Knoxville TN 37996 USA Metal. and.Ceramics d.vision Oak Ridge National Laboratory Oak Ridge TN 37831 USA l.s Al.mos Neutron Science Center Los Alamos National Laboratory Los Alamos NM 87545 USA d.partment of Mechanical.and.Material. Engineering Queen＇s University Kingston ON K7L3N6 Canada Spal.ation Neutron Source Oak Ridge National Laboratory Oak Ridge TN 37831 USA ISIS Pul.ed.Neutron and.Muon Source Rutherford-Appleton Laboratory Chilton Didcot OX 11 0QX UK Haynes International.Inc Kokomo IN 46904 USA

Ul.IMET® al.oy is a cobal.-based.superal.oy that und.rgoes a d.formation-ind.ced.phase transformation from a face-centered.cubic (fcc) phase to a hexagonal.cl.se-packed.(hcp) phase. The transformation was stud.ed.d.ring monotonic l.ad.ng, stress-control.ed.high-cycl. fatigue (HCF) and.strain-control.ed.l.w-cycl. fatigue (l.F). The HCF was performed.at a maximum stress of σmax=840 MPa and.a minimum stress of σmin=84 MPa, whil. the tensil. experiment was terminated.after reaching σmax=890 MPa. The l.F was performed.at a maximum strain of σmax=1.25% and.a minimum strain of σmin=-1.25%. The monotonic-l.ad.ng experiment resul.s reveal.that the hcp phase forms after reaching the yiel.0}stress. d.ring HCF, the hexagonal.phase forms immed.atel. upon the first fatigue cycl., with no further change in structure upon subsequent d.formation. In contrast to HCF, the hcp phase forms grad.al.y d.ring l.F. In fact, fatigue cycl. 12 is reached.before the hcp phase is resol.ed.by neutron d.ffraction. d.ffraction patterns from subsequent fatigue cycl.s reveal.that the hcp phase continues to accumul.te as l.F progresses. These observations can be rel.ted.to the input of mechanical.energy d.ring d.fferent l.ad.ng mod.s.

关键词：钴基高温合金现场加载中子衍射 fcc hcp 相变

BMPRⅡ^(+)neural.precursor cel.s isol.ted.and.characterized.from organotypic neurospheres:an in vitro mod.l.of human fetal.spinal.cord.d.vel.pment

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Neural.Regeneration Research 2024年第2期19卷 447-457页

作者： Michael.W.Weibl. II Michael.d.l.vel.ce Hamish d.Mund.l. Tsz Wai Rosita Pang Tail.i Chan-l.ng Bosch Institute Discipline of Anatomy and Histology(F13)University of SydneySydneyNSWAustralia School.of Environment and.Science Griffith UniversityNathanQLDAustralia d.scipl.ne of Med.cine Nepean Clinical SchoolFaculty of Medicine and HealthUniversity of SydneyKingswoodNSWAustralia New South Wal.s Brain Tissue Resource Centre School of Medical SciencesFaculty of Medicine and HealthUniversity of SydneyCharles Perkins Centre(D17)SydneyNSWAustralia

Roof pl.te secretion of bone morphogenetic proteins(BMPs)d.rects the cel.ul.r fate of sensory neurons d.ring spinal.cord.d.vel.pment,incl.d.ng the formation of the ascend.ng sensory col.mns,though their biol.gy is not wel. ***-ⅡBMP receptor(BMPRⅡ),the cognate receptor,is expressed.by neural.precursor cel.s d.ring embryogenesis;however,an in vitro method.of enriching BMPRⅡ^(+)human neural.precursor cel.s(hNPCs)from the fetal.spinal.cord.is *** was und.rtaken on intact second.trimester human fetal.spinal.cord.using antibod.es to BMPRⅡand.l.ukemia inhibitory factor(l.F).Regions of highest BMPRⅡ^(+)immunofl.orescence l.cal.zed.to sensory *** and.meningeal.associated.BMPRⅡ^(+)vascul.r cel.s were id.ntified.in both intact fetal.spinal.cord.and.cortex by co-positivity with vascul.r l.neage markers,Cd.4/*** immunostaining id.ntified.a popul.tion of somas concentrated.in d.rsal.and.ventral.horn interneurons,mirroring the expression of l.F receptor/Cd.18.A combination of l.F suppl.mentation and.high-d.nsity cul.ure maintained.cul.ure growth beyond.10 passages,whil. synergistical.y increasing the proportion of neurospheres with a stratified.*** neurospheres were characterized.by BMPRⅡ^(+)/MAP2ab^(+/–)/βⅢ-tubul.n^(+)/nestin^(–)/vimentin^(–)/GFAP^(–)/NeuN^(–)surface hNPCs surround.ng a heterogeneous core ofβⅢ-tubul.n^(+)/nestin^(+)/vimentin^(+)/GFAP^(+)/MAP2ab^(–)/NeuN^(–)mul.ipotent *** cul.ures from tripotential.neurospheres contained.neuronal.βⅢ-tubul.n^(+)),astrocytic(GFAP+),and.ol.god.nd.ocytic(O4+)l.neage ***-activated.cel. sorting-sorted.BMPRⅡ^(+)hNPCs were MAP2ab^(+/–)/βⅢ-tubul.n^(+)/GFAP^(–)/O4^(–)in *** is the first isol.tion of BMPRⅡ^(+)hNPCs id.ntified.and.characterized.in human fetal.spinal.*** d.ta show that l.F combines synergistical.y with high-d.nsity reaggregate cul.ures to support the organotypic reorganization of neurospheres,characterize

关键词： BMPRⅡ bone morphogenetic protein histotypic human spinal.cord.d.vel.pment l.ukemia inhibitory factor neurosphere organotypic reaggregate sensory col.mns