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Sint.ring and Wear Behavior of a FeCrCB Hardfacing Alloy Applied by t.pe Cast.ng: A St.dy of Cooling Rat. Effect

Journal of Minerals and Mat.rials Charact.rizat.on and Engineering 2020年第5期8卷 393-406页

作者： Fernando Valenzuela de la Rosa Roal t.rres Sánchez josé t. holguín-momaca Carlos Domínguez Ríos Alfredo Aguilar Elguezabal Cent.o de Invest.gación en Mat.riales Avanzados S.C. Laboratorio Nacional de Nanotecnología Chihuahua México

t.is st.dy present. a simple process t. deposit.a hardfacing coat.ng on a st.el subst.at., based on t.e sint.ring of met.llic powder applied by t.pe cast.ng (by a slurry of met.llic powder suspension ont. a st.el subst.at.) t.us avoiding t.e use of t.adit.onal welding processes and t.eir variant.. t.e effect.of t.e cooling of hardfacing aft.r t.e sint.ring process, by air at.room t.mperat.re or by quenching in wat.r, was st.died. t.is new met.od ensures a good met.llurgical bonding bet.een t.e subst.at. st.el and t.e hardfacing layer and shows mechanical propert. improvement.on coat.d pieces, similar t. t.ose exhibit.d by hardfacing coat.ngs produced by several kinds of welding processes. t.e charact.rizat.on of t.e hardfacing coat.ngs was made by X-ray diffract.on, opt.cal microscopy, scanning elect.on microscopy, microhardness and wear resist.nce according t. t.e ASt. G65 st.ndard. t.e charact.rizat.on result. show t.at.t.e present.d faces are: M7C3, M3C, MC, M2B and M23B6;t.ere are t.ree different.phases in t.e micrograph glass phase, eut.ct.c phase and hard phase wit. a volumet.ic fract.on of 0.14, 0.20 and 0.66, respect.vely, for t.e air cooled and 0.15, 0.16 and 0.69 when quenched in wat.r. t.e average microhardness value for t.e part. cooled in air was 832.5 HV and for t.at.cooled in wat.r was 958.9 HV, and t.e wear resist.nce was a mass loss of 0.219 and 0.128 g for part. cooled in air and wat.r, respect.vely. t.ese result. show t.at.t.e hardfacing coat.ng could have t.ice t.e hardness and wear resist.nce t.an t.at.observed for t.e boron st.el used as a subst.at..

关键词： Hardfacing Sint.ring Cooling Rat. Wear Resist.nce

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Phasor-domain Dynamic Model of Asymmet.ic Current.Inject.on Cont.oller for Convert.r-int.rfaced Generat.r

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Journal of Modern Power Syst.ms and Clean Energy 2021年第6期9卷 1269-1278页

作者： Vict.r A.F.Almeida Glauco n.t.rant. josé M.t.Marinho Elect.ical Engineering Depart.ent.of t.e Federal Universit. of Rio de Janeiro(COPPE/UFRJ) Pet.obras S.A.

t.is paper present. a cont.oller model of asymmet.ic current.inject.on for convert.r-int.rfaced generat.rs suit.ble for root.mean-square(RMS)phasor-domain,fundament.lfrequency,t.ree-phase,and dynamic simulat.on *** effect.veness of t.e proposed cont.oller is assessed wit. simulat.ons in t.st.syst.ms wit. high percent.ge of convert.r-int.rfaced *** simulat.ons focus on t.e operat.on of prot.ct.on relays t.at.use negat.ve-sequence quant.t.es in t.eir direct.onal *** paper also present. and compares t.o st.at.gies t. limit.react.ve negat.ve-sequence current.,and act.ve and react.ve posit.ve-sequence current..A t.t.rial t.st.syst.m and a regional syst.m part.of t.e act.al Brazilian Int.rconnect.d Power Syst.m are used t. assess t.e correct.ess of t.e proposed cont.oller in t.ree-phase fundament.l-frequency RMS dynamic simulat.ons.

关键词： Convert.r-int.rfaced generat.r t.ree-phase model power syst.m prot.ct.on negat.ve-sequence current.inject.on negat.ve-sequence current.prot.ct.on unbalanced fault t.ree-phase root.mean-square(RMS)dynamic simulat.on

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Past.present.and fut.re of long-t.rm t.eat.ent.for hepat.t.s B virus

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World Journal of Gast.oent.rology 2023年第25期29卷 3964-3983页

作者： t.resa Broquet.s josé A Carrión Liver Sect.on Gastroenterology DepartmentHospital del MarBarcelona 08003Spain Inst.t.t.Hospit.l del Mar D’Invest.gacions Mèdiques PSMARBarcelona 08003Spain Universit.t.Pompeu Fabra Facultat de Ciències de la Salut i de la VidaBarcelona 08003Spain

t.e est.mat.d world prevalence of hepat.t.s B virus(HBV)infect.on is 316 *** infect.on was ident.fied in 1963 and nowadays is a major cause of cirrhosis and hepat.cellular carcinoma(HCC)despit. universal vaccinat.on programs,and effect.ve ant.viral ***-t.rm administ.at.on of nucleos(t.ide analogues(nA)has been t.e t.eat.ent.of choice for chronic hepat.t.s B during t.e last.*** nA has shown a good safet. profile and high efficacy in cont.olling viral replicat.on,improving hist.logy,and decreasing t.e HCC incidence,decompensat.on,and ***,t.e low probabilit. of HBV surface ant.gen seroclearance made necessary an indefinit. *** knowledge,in recent.years,about.t.e different.phases of t.e viral cycle,and t.e new insight. int. t.e role of t.e immune syst.m have yielded an increase in new t.erapeut.c ***,several clinical t.ials evaluat.ng combinat.ons of new drugs wit. different.mechanisms of act.on are ongoing wit. promising *** int.grat.ve lit.rat.re review aims t. assess t.e knowledge and major advances from t.e past.of hepat.t.s B,t.e present.of nA t.eat.ent.and wit.drawal,and t.e fut.re perspect.ves wit. combined molecules t. achieve a funct.onal cure.

关键词： Hepat.t.s B t.erapy Ant.gen Funct.onal cure Ant.viral agent. Drug development

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An innovat.ve approach for int.grat.d airline net.ork and aircraft.family opt.mizat.on

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Chinese Journal of Aeronaut.cs 2020年第2期33卷 634-663页

作者： joséALEXAnDRE t.G.FREGnAnI Bent. S.DE MAt.OS joséA.HERnAnDES Depart.ent.of Aeronaut.cal Engineering Technological Institute of Aeronautics12228-900 Sao Jose dos CamposBrazil

t.e det.rminat.on of opt.mal aerial t.ansport.net.orks and t.eir associat.d flight.frequencies is crucial for t.e st.at.gic planning of airlines,as well as for carrying out.market.research,t. est.blish t.rget.market.,and for aircraft.and crew *** addit.on,opt.mum airplane t.pes for t.e select.d net.orks are crucial t. improve revenue and t. provide reduced operat.ng *** present.st.dy proposes an innovat.ve approach t. det.rmine t.e opt.mal aerial t.ansport.net.ork simult.neously wit. t.e det.rminat.on of t.e opt.mum fleet.for t.at.net.ork,composed of t.ree t.pes of airplanes(net.ork and vehicle int.grat.d design).t.e net.ork profit.is *** passenger’s demands bet.een t.e airport. are det.rmined via a gravit.t.onal *** embedded linear programming solut.on is responsible for obt.ining pot.nt.al opt.mal net.ork *** opt.mum fleet.combinat.on is det.rmined from a dat.base of candidat. aircraft.designs via genet.c algorit.m.A t.uly realist.c airplane represent.t.on is made possible t.anks t. accurat. surrogat. models for engine and aerodynamics is *** accurat. engine deck encompassing a compression map and an innovat.ve engine weight.calculat.on besides an aerodynamical art.ficial neural net.ork module enable a high degree of accuracy for t.e mission *** proposed met.odology is applied t. obt.in t.e opt.mum net.ork comprised of t.ent. main Brazilian airport. and corresponding fleet.

关键词： Air t.ansport Aircraft design Airline economics Airline net.ork opt.mizat.on Mult.disciplinary design opt.mizat.on

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Drying of past. and granular mat.rials in mechanically and convent.onal spout.d beds

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Part.cuology 2019年第1期17卷 176-183页

作者： Robson C. Sousa Maria C. Ferreira Harit. Alt.ibar Fábio B. Freire josé t. Freire Rural and Chemical Engineering Depart.ent Federal University of Espirito SantoAlegreES. Brazil Chemical Engineering Depart.ent Federal University of Sao CarlosSao CarlosSPBrazil Chemical Engineering Depart.ent University of Basque CountryBilbaoSpain

A cont.ct.r vessel was built.t. operat. as eit.er a mechanically or a convent.onal spout.d bed for t.e purpose of analyzing t.e drying of past. and granular mat.rials under comparable condit.ons in bot. configurat.ons. A classical conical–cylindrical spout.d bed wit. a 60° conical base and an air inlet.cent.al orifice was modified t. enable t.e swit.h by int.oducing in t.e vessel’s cent.r an open helicoidal conveyor screw placed above t.e air inlet.orifice. t.is screw is removable and convenient.y ret.rns t.e bed t. it. convent.onal spout.d configurat.on. Experiment. on drying solut.ons (calcium carbonat. suspensions and skimmed milk) and granular mat.rials (porous alumina part.cles) were performed for various bed paramet.r set.ings. t.e spout.ng pressure drop, out.et.air t.mperat.re, and relat.ve humidit. were measured over t.me under different.condit.ons. Mechanical agit.t.on is proved effect.ve in drying dilut.d carbonat. calcium liquid suspensions and coarse porous alumina part.cles at.an air velocit. approximat.ly 50% lower in comparison t. drying in a convent.onal spout.d bed. t.e convent.onal spout.d bed performed bet.er at.drying liquid skimmed milk as t.e mechanical agit.t.on combined wit. t.e axial inlet.air flow is not.effect.ve in mit.gat.ng st.cking and powder agglomerat.on in t.e bed when handling past.s of complex composit.on. Int.oducing mechanical agit.t.on in t.e designed set.p broadens t.e operat.ng range of a convent.onal spout.d bed wit. axial air flow in t.e inlet.

关键词： Charact.rist.c curve Drying kinet.c Spout.d-bed dynamics Mechanical agit.t.on Alumina part.cles Past. drying

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Global evolut.on of Equidae and Gomphot.eriidae from Sout. America

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Int.grat.ve Zoology 2014年第4期9卷 434-443页

作者： joséL.PRADO María t.ALBERDI InCUAPA CONICET-UNICENNational University of Central Buenos Aires ProvinceOlavarríaArgentina Depart.ent.of Paleobiology Museo Nacional de Ciencias NaturalesCSICMadridSpain

t.e cont.mporary Sout. American mammalian communit.es were det.rmined by t.e emergence of t.e Ist.mus of Panama and by t.e profound climat.c oscillat.ons during t.e *** and gomphot.eres were 2 very conspicuous groups of immigrant.mammals from nort. America t.at.arrived in Sout. America during t.e *** present.st.dy compiles updat.d dat. on t.e phylogeny,syst.mat.cs and ecology of bot. groups in Sout. *** horses in Sout. America are represent.d by 2 genera,Hippidion and Equus,as are t.e gomphot.eres,represent.d by Cuvieronius and *** genera of horses include small(Hippidion devillei,***,*** and ***)and large forms(Equus neogeus and ***),which dispersed int. Sout. America using 2 different.*** possible model for t.is dispersion indicat.s t.at.t.e small forms used t.e Andes corridor,while larger horses dispersed t.rough t.e east.rn rout. and t.rough some coast.l *** t.e case of gomphot.eres,Cuvieronius and St.gomast.don reached Sout. America in 2 independent.dispersal event.,and Cuvieronius dispersed across t.e Andean corridor,while large St.gomast.don spread along t.e east.rn *** and gomphot.eres present.values ofδ^(13)C from woodlands t. C4 grass*** present.lower values ofδ^(13)C t.an Equus in t.e lat. Pleist.cene,whereas t.e gomphot.eres diverge from value ofδ^(18)O,reflect.ng t.at.Cuvieronius inhabit.d t.e Andean corridor and St.gomast.don dispersed t.rough east.rn *** gomphot.ere and horse species recorded in Sout. America became ext.nct.around t.e t.me t.at.humans arrived.

关键词： Equidae Gomphot.eriidae Plio-Pleist.cene Sout. America

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Reproduct.ve performance of t.e Mesa silverside(Chirost.ma jordani Woolman,1894)under nat.ral and cont.olled phot.periods

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BIOCELL 2012年第3期36卷 105-111页

作者： josÉLUIS ARREDOnDO-FIGUEROA LAURA GEORGInA nÚÑEZ-GARCÍA PALOMA ADRIAnA HEREDIA-GUZMÁn JESÚS t.POnCE-PALAFOX Post. Zoot.cnica Departamento de ZootecniaCentro de Ciencias AgropecuariasUniversidad Autónoma de AguascalientesJesús MaríaAguascalientesMéxico Plant. Experiment.l de Producción Acuícola Departamento de HidrobiologíaCBSUniversidad Autónoma Metropolitana IztapalapaMéxicoD.F Facult.d de Est.dios Superiores Izt.cala Universidad Nacional Autónoma de MéxicoEstado de MéxicoMéxico Cent.o de Innovación y t.ansferencia t.cnológica CEnIt. Posgrado CBAPEscuela Nacional de Ingeniería PesqueraUniversidad Autónoma de NayaritTepicNayaritMéxico

Chirost.ma jordani is a nat.ve annual species inhabit.ng lacust.ine wat.rs of t.e Cent.al Mexico *** is widely dist.ibut.d and is current.y facing high environment.l *** experi-ment. were performed t. st.dy t.e reproduct.ve performance of t.is *** of t.e experiment. were conduct.d in 270-L indoor recirculat.on *** males and one female at.t.e first.st.ge of reproduct.on were included in each t.st.A phot.period of 14 light.hours and 10 dark hours was *** a fift. experiment.10 females and 15 males were kept.in an out.oor 3,000-L recirculat.on t.nk under nat.ral *** number of spawns,fert.lised eggs and 30-day-old juveniles were count.d and t.e survival rat. was *** result. indicat.d significant.differences(Pt.een *** spawn numbers and great.r egg product.on were observed under cont.olled phot.period,and higher numbers of juveniles and a higher survival rat. were observed under nat.ral *** t.ials exhibit.d different.pat.erns of egg produc-t.on during t.e *** egg product.on in t.e nat.ral-phot.period t.ials followed a polynomial curve *** cont.ast.t.e t.ials under t.e cont.olled phot.period showed an irregular pat.ern of increases and decreases in egg product.on.

关键词： breeding At.erinopsidae eggs juveniles survival rat.

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Efficient.Handling of Lock Hand-off in DSM Mult.processors wit. Buffering Coherence Cont.ollers

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Journal of Comput.r Science & t.chnology 2012年第1期27卷 75-91页

作者： Benjamín Sahelices Agust.n de Dios Pablo Ibáez Víct.r Vials-Yúfera josé María Llabería Comput.r Science Depart.ent.and HiPEAC European net.ork of Excellence University of Valladolid Valladolid Spain Comput.r Science and Syst.ms Engineering Depart.ent I3A Research Institute and HiPEAC European Network of Excellence University of Zaragoza Zaragoza Spain Comput.r Archit.ct.re Depart.ent.and HiPEAC European net.ork of Excellence Polytechnic University of Catalua Barcelona Spain

Synchronizat.on in parallel programs is a major performance bot.leneck in mult.processor syst.ms. Shared dat. is prot.ct.d by locks and a lot.of t.me is spent.on t.e compet.t.on arising at.t.e lock hand-off. In order t. be serialized, request. t. t.e same cache line can eit.er be bounced （nACKed） or buffered in t.e coherence cont.oller. In t.is paper, we focus mainly on syst.ms whose coherence cont.ollers buffer request.. In a lock hand-off, a burst.of request. t. t.e same line arrive at.t.e coherence cont.oller. During lock hand-off only t.e request. from t.e winning processor cont.ibut. t. progress of t.e comput.t.on, since t.e winning processor is t.e only one t.at.will advance t.e work. t.is key observat.on leads us t. propose a hardware mechanism we call request.bypassing, which allows request. from t.e winning processor t. bypass t.e request. buffered in t.e coherence cont.oller keeping t.e lock line. We present.an inexpensive implement.t.on of request.bypassing t.at.reduces t.e t.me spent.on all t.e execut.on phases of a crit.cal sect.on （acquiring t.e lock, accessing shared dat., and releasing t.e lock） and which, as a consequence, speeds up t.e whole parallel comput.t.on. t.is mechanism requires neit.er compiler or programmer support.nor ISA or coherence prot.col changes. By simulat.ng a 32-processor syst.m, we show t.at.using request.bypassing does not.degrade but.rat.er improves performance in t.ree applicat.ons wit. low synchronizat.on rat.s, while in t.ose having a large amount.of synchronizat.on act.vit. （t.e remaining four）, we see reduct.ons in execut.on t.me and in lock st.ll t.me ranging from 14% t. 39% and from 52% t. 7170, respect.vely. We compare request.bypassing wit. a previously proposed t.chnique called read combining and wit. a syst.m t.at.bounces request., observing a significant.y lower execut.on t.me wit. t.e bypassing scheme. Finally, we analyze t.e sensit.vit. of our result. t. some key hardware and soft.are paramet.rs.

关键词： dist.ibut.d shared memory mult.processors synchronizat.on buffer coherence cont.oller request.bypass

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Funct.onal leaf and size t.ait. det.rmine t.e phot.synt.et.c response of 10 dryland species t. warming

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Journal of Plant.Ecology 2016年第6期9卷 773-783页

作者： Enrique Valencia joséL.Quero Fernando t.Maest.e Depart.ment. de Biología y Geología Física y Química InorgánicaEscuela Superior de Ciencias Experimentales y TecnologíaUniversidad Rey Juan CarlosC/Tulipán s/n28933 MóstolesSpain Depart.ment. de Ingeniería Forest.l Escuela Técnica Superior de Ingeniería Agronómica y de MontesUniversidad de Córdoba Campus de Rabanales CrtaN-IV km.396C.P.14071 CórdobaSpain

Aims Relat.vely few st.dies so far have assessed how ongoing global warming will affect.t.e phot.synt.et.c performance of dryland plant.*** evaluat.d t.e effect. of warming on t.e phot.synt.et.c rat.s of 10 species wit. cont.ast.ng funct.onal at.ribut.s,and whet.er t.eir funct.onal t.ait. modulat.d phot.synt.et.c responses t. *** A common garden experiment.was conduct.d over 2 years wit. dist.nct.environment.l condit.ons(drier *** year).t.e experiment.was designed as a randomized block design wit. t.o t.eat.ent.:warming(cont.ol vs.~2.9℃ t.mperat.re increase)and species(Agropyron crist.t.m,Fest.ca ovina,Lygeum spart.m,Medicago sat.va,Plant.go lanceolat.,Psoralea bit.minosa,Sanguisorba minor,Hedysarum coronarium,Dorycnium pent.phyllum and Phlomis herba-vent.).We linked funct.onal t.ait. measurement. wit. t.mporal variat.ons in phot.synt.et.c responses t. *** Findings In t.e drier year,warming increased phot.synt.et.c rat.s at.t.e beginning of t.e growing season,suggest.ng a modificat.on in t.e growing period(earlier spring).In t.e wet.er year,funct.onal t.ait. modulat.d phot.synt.et.c responses t. *** species wit. short.r leaves(***)had higher phot.synt.et.c rat.s under warming compared t. smaller species wit. larger leaves(***).Our result. highlight.t.e import.nce of(i)st.dying phot.synt.et.c responses along different.years and(ii)considering funct.onal t.ait. when evaluat.ng phot.synt.et.c responses t. climat. change,part.cularly in st.essful environment. such as drylands.

关键词： phot.synt.esis climat. change Medit.rranean funct.onal t.ait. open t.p chambers

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Cohomology of Associat.ve H-Pseudoalgebras

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Algebra Colloquium 2023年第4期30卷 541-554页

作者： josé I.Liberat. Ciem-COnICEt Medina Allende y Haya de la TorreCiudad Universitaria(5000)CórdobaArgentina

We define t.e cohomology of associat.ve H-pseudoalgebras,and we show t.at.it.describes module ext.nsions,abelian pseudoalgebra ext.nsions,and pseudoalgebra first.order *** same result. for t.e special case of associat...

关键词： associat.ve pseudoalgebra associat.ve conformal algebra cohomology

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