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A POSTERIORI ERROR An.LYSIS OF A FULLY-MIXED FIn.TE ELEMEn. METHOD FOR A TWO-DIMEn.IOn.L FLUID-SOLID In.ERACTIOn.PROBLEM

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Journ.l of Computation.l Mathematics 2015年第6期33卷 606-641页

作者： Carolin. Domin.uez gabriel n. gatica salim meddahi In.tituto de Cien.ias Fisicas y Matemdticas facultad de cien.ias un.versidad austral de chile Aven.da Eduardo Morales Miran.a - Campus isla teja valdivia chile CI2 MA an. Departamen.o de In.en.eria Matematica Universidad de concapcion casilla 160 concepcion chile Departamen.o de Matemdticas Facultad de ciencias universidad de oiede calvo satela s/n oviedo espana

In.this paper we develop an.a posteriori error an.lysis of a fully-mixed fin.te elemen. method for a fluid-solid in.eraction.problem in.2D. The media are govern.d by the elas-todyn.mic an. acoustic equation. in.time-harmon.c regime, respectively, the tran.mission.con.ition. are given.by the equilibrium of forces an. the equality of the correspon.in. n.rmal displacemen.s, an. the fluid is supposed to occupy an.an.ular region.surroun.in. the solid, so that a Robin.boun.ary con.ition.imitatin. the behavior of the sommerfeld con.ition.is imposed on.its exterior boun.ary. Dual-mixed approaches are applied in.both domain., an. the govern.n. equation. are employed to elimin.te the displacen.n. a of the solid an. the pressure p of the fluid. In.addition. sin.e both tran.mission.con.ition. become essen.ial, they are en.orced weakly by mean. of two suitable lahran.e multipliers The un.n.wn. of the solid an. the fluid are then.approximated by a con.ormin. galerkin.scheme defin.d in.terms of PEERS elemen.s in.the solid, Raviart-Thomas of lowest order in.the fluid, an. con.in.ous piecewise lin.ar fun.tion. on.the boun.ary, As the main.con.tribution.of this work, we derive a reliable an. efficien. residual-based a posteriori error estimator for the aforedescribed coupled problem. Some n.merical results con.irmin. the properties of the estimator are also reported.

关键词： Mixed fin.te elemen.s Helmholtz equation Elastodyn.mic equation.A poste- riori error an.lysis

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Magn.topause properties at the dusk magn.tospheric flan. from global magn.tohydrodyn.mic simulation.,the kin.tic Vlasov equilibrium,an. in.situ observation.--Poten.ial implication. for SMILE

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Earth an. Plan.tary Physics 2024年第1期8卷 222-233页

作者： Marius Echim Costel Mun.ean. gabriel Voitcu Eliza Teodorescu In.titute of Space Scien.e Măgurele 077125Romania Royal Belgian.In.titute for Space Aeron.my 1180 BrusselsBelgium Solar-Terrestrial Cen.re of Excellen.e(STCE) 1180 BrusselsBelgium

We derived the properties of the terrestrial magn.topause(MP)from two modelin. approaches,on. global–fluid,the other local–kin.tic,an. compared the results with data collected in.situ by the Magn.tospheric Multiscale 2(MMS2)*** used global magn.tohydrodyn.mic(MHD)simulation. of the Earth’s magn.tosphere(publicly available from the n.SA-CCMC[n.tion.l Aeron.utics an. Space Admin.stration.Commun.ty Coordin.ted Modelin. Cen.er])an. local Vlasov equilibrium models(based on.kin.tic models for tan.en.ial discon.in.ities)to extract spatial profiles of the plasma an. field variables at the Earth’s *** global MHD simulation. used in.tial solar win. con.ition. extracted from the OMn. database at the time epoch when.the MMS2 observes the *** kin.tic Vlasov model used asymptotic boun.ary con.ition. derived from the same in.situ MMS measuremen.s upstream or down.tream of the *** global MHD simulation. provide a three-dimen.ion.l image of the magn.tosphere at the time when.the MMS2 crosses the *** Vlasov model provides a on.-dimen.ion.l local view of the MP derived from first prin.iples of kin.tic *** MMS2 experimen.al data also serve as a referen.e for comparin. an. validatin. the n.merical simulation. an. *** foun. that the MP tran.ition.layer formed in.global MHD simulation. was gen.rally localized closer to the Earth(roughly by on. Earth radius)from the position.of the real MP observed by the *** also foun. that the global MHD simulation. overestimated the thickn.ss of the MP tran.ition.by on. order of magn.tude for three an.lyzed variables:magn.tic field,den.ity,an. tan.en.ial *** MP thickn.ss derived from the local Vlasov equilibrium was con.isten. with observation. for all three of these *** overestimation.of den.ity in.the Vlasov equilibrium was reduced compared with the global MHD *** discuss our results in.the con.ext of future SMILE(Solar win. Magn.tosphere Ion.sphere Lin. Explorer)campaign. for observin.

关键词： magn.topause magn.tohydrodyn.mic n.merical simulation. Vlasov equilibrium Magn.tospheric Multiscale observation.

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From sin.le to combin.torial therapies in.spin.l cord in.uries for structural an. fun.tion.l restoration

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n.ural Regen.ration.Research 2025年第3期20卷 660-670页

作者： Ern.sto Don.el-Pérez gabriel Guízar-Sahagún.Israel Grijalva-Otero Hospital n.cion.l de Parapléjicos de Toledo Servicio de Salud de Castilla La Mancha(SESCAM)ToledoSpain Medical Research Un.t for n.urological Diseases UMAE Hospital de EspecialidadesCentro Médico Nacional Siglo XXIIMSSCiudad de MéxicoMéxico

Spin.l cord in.ury results in.paralysis, sen.ory disturban.es, sphin.ter dysfun.tion. an. multiple systemic secon.ary con.ition., most arisin. from auton.mic dysregulation. All this produces profoun. n.gative psychosocial implication. for affected people, their families, an. their commun.ties;the fin.n.ial costs can.be challen.in. for their families an. health in.titution.. Treatmen.s aimed at restorin. the spin.l cord after spin.l cord in.ury, which have been.tested in.an.mal models or clin.cal trials, gen.rally seek to coun.eract on. or more of the secon.ary mechan.sms of in.ury to limit the exten. of the in.tial damage. Most published works on.structural/fun.tion.l restoration.in.acute an. chron.c spin.l cord in.ury stages use a sin.le type of treatmen.: a drug or trophic factor, tran.plan. of a cell type, an. implan.ation.of a biomaterial. Despite the sign.fican. ben.fits reported in.an.mal models, when.tran.latin. these successful therapeutic strategies to human., the result in.clin.cal trials has been.con.idered of little relevan.e because the improvemen., when.presen., is usually in.ufficien.. Un.il n.w, most studies design.d to promote n.uroprotection.or regen.ration.at differen. stages after spin.l cord in.ury have used sin.le treatmen.s. Con.iderin. the occurren.e of various secon.ary mechan.sms of in.ury in.the acute an. sub-acute phases of spin.l cord in.ury, it is reason.ble to speculate that more than.on. therapeutic agen. could be required to promote structural an. fun.tion.l restoration.of the damaged spin.l cord. Treatmen.s that combin. several therapeutic agen.s, targetin. differen. mechan.sms of in.ury, which, when.used as a sin.le therapy, have shown.some ben.fits, allow us to assume that they will have syn.rgistic ben.ficial effects. Thus, this n.rrative review article aims to summarize curren. tren.s in.the use of strategies that combin. therapeutic agen.s admin.stered simultan.ously or sequen.ially, seekin. structural an. fun.tion.l restoratio

关键词： n.ural regen.ration n.uroprotection spin.l cord in.ury repair spin.l cord in.ury treatmen.s structural restoration.of spin.l cord in.ury

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Experimen.al Exclusion.of Guan.co Grazin. In.reases Cover, Diversity, Lan. Fun.tion.an. Plan. Recruitmen. in.Patagon.a

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Phyton.In.ern.tion.l Journ.l of Experimen.al Botan. 2024年第7期93卷 1383-1401页

作者： Carla Cepeda gabriel Oliva Dan.ela Ferran.e In.A In.tituto n.cion.l de Tecn.logía Agropecuaria Santa Cruz9400Rio GallegosArgentina Un.versidad n.cion.l de la Patagon.a Austral Santa Cruz9400Rio GallegosArgentina

Semiarid Patagon.a represen.s 25%of the ran.elan. area in.Argen.in.,an. sheep overgrazin. has degraded about a third of it in.the *** this cen.ury,depleted domestic stocks have mostly stabilized,but Guan.co population. have *** n.tive camelids share habitat an. diets with sheep,but their effect on.vegetation.is poorly un.erstood an. has lon. been.*** set up an.exclusion.experimen. in.Mon.e León.an. Cañadón.Vaca,a semiarid shrublan. grasslan. in.southern.Patagon.a,curren.ly grazed on.y by *** baselin.s were studied in.2016 in.twelve plots,an. half of them were protected from guan.co ***-six plots were cleared to study *** was reassessed in.2021,an. chan.es were evaluated usin. a paired *** protected plots,vegetation.cover in.reased,bare soil dimin.shed,an. vegetated patches grew in.size,but the den.ity of the patch-in.erpatch arran.emen. did n.t ***,measured by richn.ss an. the Shan.n.n.Wien.r(SW)in.ex,grew sign.ﬁ*** recyclin. in.reased,as did the Stability an. In.ltration.Lan. Fun.tion.in.exes,although these last differen.es were n.t sign.ﬁ*** cover un.er guan.co grazin. also in.reased,main.y due to the growth of dwarf shrubs,a typical ten.en.y in.sheep grazin.-in.uced tran.ition. in.the *** patches un.er grazin. fragmen.ed,resultin. in.smaller patches an. den.er patch struc-tures,while diversity an. lan. fun.tion.in.exes remain.d *** plan.s established in.cleared plots without guan.cos showed higher cover den.ity an. in.ividual *** effects are similar to those observed in.n.merous experimen.al sheep *** grazin. may thus preven. restoration.an. con.ribute to the gen.ralized lan. degradation.processes that overgrazin. has been.causin. in.Patagon.a for over a cen.ury.

关键词： Ran.elan.s herbivory biodiversity overgrazin. carryin. capacity faun.

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From liver to hormon.s:The en.ocrin. con.equen.es of cirrhosis

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World Journ.l of Gastroen.erology 2024年第9期30卷 1073-1095页

作者： Juan.Eduardo Quiroz-Aldave Elman.Rolan.o Gamarra-Osorio María del Carmen.Duran.-Vásquez Lucian. del Pilar Rafael-Robles Jhean.gabriel Gon.áles-Yovera María Alejan.ra Quispe-Flores Luis Alberto Con.epción.Urteaga Alejan.ro Román.Gon.ález José Paz-Ibarra Marcio José Con.epción.Zavaleta n.n.commun.cable Diseases Endocrinology Research LineHospital de Apoyo ChepénChepén 13871Peru Departmen. of En.ocrin.logy Hospital Víctor Lazarte EchegarayTrujillo 13006Peru Departmen. of En.ocrin.logy Clínica Javier PradoLima 15046Peru Departmen. of Gastroen.erology Hospital Nacional Guillermo Almenara IrigoyénLima 15018Peru Departmen. of En.ocrin.logy Hospital de Emergencias GrauLima 15001Peru In.ern.l Medicin. Hospital Regional Docente de TrujilloTrujillo 13011Peru Departmen. of En.ocrin.logy Hospital Universitario de San Vicente FundaciónMedellin 050010Colombia In.ern.l Medicin. Universidad de AntioquiaMedellín 050010Colombia School of Medicin. Universidad Nacional Mayor de San MarcosLima 15081Peru Departmen. of En.ocrin.logy Hospital Nacional Edgardo Rebagliati MartinsLima 15072Peru Carrera de Medicin. Human. Universidad Científica del SurLima 15067Peru

Hepatocrin.logy explores the in.ricate relation.hip between.liver fun.tion.an. the en.ocrin. *** liver diseases such as liver cirrhosis can.cause en.ocrin. disorders due to toxin.accumulation.an. protein.syn.hesis *** its importan.e,assessin. en.ocrin. issues in.cirrhotic patien.s is frequen.ly *** article provides a comprehen.ive review of the epidemiology,pathophysiology,diagn.sis,an. treatmen. of en.ocrin. disturban.es in.liver *** review was con.ucted usin. the PubMed/Medlin.,EMBASE,an. Scielo databases,en.ompassin. 172 *** cirrhosis is associated with en.ocrin. disturban.es,in.ludin. diabetes,hypoglycemia,sarcopen.a,thyroid dysfun.tion.hypogon.dotropic hypogon.dism,bon. disease,adren.l in.ufficien.y,growth hormon. dysfun.tion.an. secon.ary *** optimal tools for diagn.sin. diabetes an. detectin. hypoglycemia are the oral glucose toleran.e test an. con.in.ous glucose mon.torin. system,*** can.be assessed through imagin. an. fun.tion.l tests,while other en.ocrin. disorders are evaluated usin. hormon.l assays an. imagin. *** option. in.lude metformin.glucagon.like peptide-1 an.logs,sodium-glucose co-tran.porter-2 in.ibitors,an. in.ulin.which are effective an. safe for diabetes *** stan.ards are followed for man.gin. hypoglycemia,an. hormon. replacemen. therapy is often.n.cessary for other en.ocrin. *** tran.plan.ation.can.address some of these problems.

关键词： Diabetes mellitus Hypoglycemia Thyroid diseases Hypogon.dism Metabolic bon. diseases Liver cirrhosis

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A MIXED VIRTUAL ELEMEn. METHOD FOR THE BOUSSIn.SQ PROBLEM On.POLYGOn.L MESHES

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Journ.l of Computation.l Mathematics 2021年第3期39卷 392-427页

作者： gabriel n.gatica Mauricio Mun.r Filan.er A.Sequeira CI^2 MA an. Departamen.o de In.en.eria Matemitica Universidad de ConcepcionCasilla 160-CConcepcionChile Escuela de Matemaitica Universidad NacionalCampus Omar DengoHerediaCosta Rica

In.this work we in.roduce an. an.lyze a mixed virtual elemen. method(mixed-VEM)for the two-dimen.ion.l station.ry Boussin.sq *** con.in.ous formulation.is based on.the in.roduction.of a pseudostress ten.or depen.in. n.n.in.arly on.the velocity,which allows to obtain.an.equivalen. model in.which the main.un.n.wn. are given.by the aforemen.ion.d pseudostress ten.or,the velocity an. the temperature,whereas the pressure is computed via a postprocessin. *** addition.an.augmen.ed approach together with a fixed poin. strategy is used to an.lyze the well-posedn.ss of the resultin. con.in.ous *** the discrete problem,we follow the approach employed in.a previous work dealin. with the n.vier-Stokes equation.,an. couple it with a VEM for the con.ection.diffusion.equation.modellin. the *** precisely,we use a mixed-VEM for the scheme associated with the fluid equation. in.such a way that the pseudostress an. the velocity are approximated on.virtual elemen. subspaces of H(div)an. H^(1),respectively,whereas a VEM is proposed to approximate the temperature on.a virtual elemen. subspace of H^(1).In.this way,we make use of the L^(2)-orthogon.l projectors on.o suitable polyn.mial spaces,which allows the explicit in.egration.of the terms that appear in.the bilin.ar an. trilin.ar forms in.olved in.the scheme for the fluid *** the other han.,in.order to man.pulate the bilin.ar form associated to the heat equation.,we defin. a suitable projector on.o a space of polyn.mials to deal with the fact that the diffusion.ten.or,which represen.s the thermal con.uctivity,is ***,the correspon.in. solvability an.lysis is performed usin. again.appropriate fixed-poin. ***,Stran.-type estimates are applied to derive the a priori error estimates for the compon.n.s of the virtual elemen. solution.as well as for the fully computable projection. of them an. the postprocessed *** correspon.in. rates of con.ergen.e are als

关键词： Boussin.sq problem Pseudostress-based formulation Augmen.ed formulation Mixed virtual elemen. method.High-order approximation.

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Explorin. fs-laser irradiation.damage subthreshold behavior of dielectric mirrors via electrical measuremen.s

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High Power Laser Scien.e an. En.in.erin. 2024年第2期12卷 24-32页

作者： Petrisor gabriel Bleotu Radu Udrea Alice Dumitru Olivier Uteza Maria-Dian. Mihai Dan.Gh Matei Dan.el Ursescu Stefan.Irimiciuc Valen.in.Craciun Extreme Light In.rastructure-n.clear Physics(ELI-n.) Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering(IFIN-HH)MagureleRomania Doctoral School of Physics University of BucharestMagureleRomania LULI-Cn.S CEAUniversite SorbonneEcole PolytechniqueInstitut Polytechnique de ParisPalaiseau CEDEXFrance Apel Laser IlfovRomania Aix-Marseille Un.versity CNRSLP3 UMR 7341MarseilleFrance Horia Hulubei n.tion.l In.titute for R&D in.Physics an. n.clear En.in.erin.(IFIn.HH) MagureleRomania Un.versity Politehn.ca of Bucharest BucharestRomania n.tion.l In.titute for Lasers Plasma an. Radiation.Physics MagureleRomania

With ultrafast laser systems reachin. presen.ly 10 PW peak power or operatin. at high repetition.rates,research towards en.urin. the lon.-term,trouble-free performan.e of all laser-exposed optical compon.n.s is *** work is focused on.providin. in.ight in.o the optical material behavior at fluen.es below the stan.ardized laser-in.uced damage threshold(LIDT)value by implemen.in. a simultan.ous dual an.lysis of surface emitted particles usin. a Lan.muir probe(LP)an. the target curren.(TC).HfO_(2) an. ZrO_(2) thin.films deposited on.fused silica substrates by pulsed laser deposition.at various O_(2) pressures for defect an. stoichiometry con.rol were irradiated by Gaussian.ultrashort laser pulses(800 n.,10 Hz,70 fs)in.a wide ran.e of *** TC an. LP collected sign.ls were in.good agreemen. with the existin. theoretical description.of laser–matter in.eraction.at an.ultrashort time *** approach for an.in.situ LIDT mon.torin. system provides measurable sign.ls for below-threshold irradiation.con.ition. that in.icate the en.uran.e limit of the optical surfaces in.the sin.le-shot en.rgy scan.in. *** LIDT value extracted from the LP-TC system is in.lin. with the multipulse statistical an.lysis don. with ISO 21254-2:2011(E).The implemen.ation.of the LP an. TC as on.shot diagn.stic tools for optical compon.n.s will have a sign.fican. impact on.the reliability of n.xt-gen.ration.ultrafast an. high-power laser systems.

关键词： HfO_(2) in.situ detection Lan.muir probe laser-in.uced damage threshold target curren. ZrO_(2)

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In.roducin. the n.sup>th-Order Features Adjoin. Sen.itivity An.lysis Methodology for n.n.in.ar Systems (n.sup>th-FASAM-n.: II. Illustrative Example

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American.Journ.l of Computation.l Mathematics 2024年第1期14卷 43-95页

作者： Dan.gabriel Cacuci Cen.er for n.clear Scien.e an. En.rgy University of South Carolina Columbia USA

This work highlights the un.aralleled efficien.y of the “n.h-Order Fun.tion. Feature Adjoin. Sen.itivity An.lysis Methodology for n.n.in.ar Systems” (n.h-FASAM-n. by con.iderin. the well-kn.wn.n.rdheim-Fuchs reactor... 详细信息

This work highlights the un.aralleled efficien.y of the “n.sup>th-Order Fun.tion. Feature Adjoin. Sen.itivity An.lysis Methodology for n.n.in.ar Systems” (n.sup>th-FASAM-n. by con.iderin. the well-kn.wn.n.rdheim-Fuchs reactor dyn.mics/safety model. This model describes a short-time self-limitin. power excursion.in.a n.clear reactor system havin. a n.gative temperature coefficien. in.which a large amoun. of reactivity is sudden.y in.erted, either in.en.ion.lly or by acciden.. This n.n.in.ar paradigm model is sufficien.ly complex to model realistically self-limitin. power excursion. for short times yet admits closed-form exact expression. for the time-depen.en. n.utron.flux, temperature distribution.an. en.rgy released durin. the tran.ien. power burst. The n.sup>th-FASAM-n.methodology is compared to the extan. “n.sup>th-Order Comprehen.ive Adjoin. Sen.itivity An.lysis Methodology for n.n.in.ar Systems” (n.sup>th-CASAM-n. showin. that: (i) the 1st-FASAM-n.an. the 1st-CASAM-n.methodologies are equally efficien. for computin. the first-order sen.itivities;each methodology requires a sin.le large-scale computation.for solvin. the “First-Level Adjoin. Sen.itivity System” (1st-LASS);(ii) the 2n.-FASAM-n.methodology is con.iderably more efficien. than.the 2n.-CASAM-n.methodology for computin. the secon.-order sen.itivities sin.e the n.mber of feature-fun.tion. is much smaller than.the n.mber of primary parameters;specifically for the n.rdheim-Fuchs model, the 2n.-FASAM-n.methodology requires 2 large-scale computation. to obtain.all of the exact expression. of the 28 distin.t secon.-order respon.e sen.itivities with respect to the model parameters while the 2n.-CASAM-n.methodology requires 7 large-scale computation. for obtain.n. these 28 secon.-order sen.itivities;(iii) the 3rd-FASAM-n.methodology is even.more efficien. than.the 3rd-CASAM-n.methodo

关键词： n.rdheim-Fuchs Reactor Safety Model Feature Fun.tion. of Model Parameters High-Order Respon.e Sen.itivities to Parameters Adjoin. Sen.itivity Systems

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Pseudostress-BasedMixed Fin.te Elemen. Methods for the Stokes Problem in.Rn.with Dirichlet Boun.ary Con.ition..I:A Priori Error An.lysis

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Commun.cation. in.Computation.l Physics 2012年第6期12卷 109-134页

作者： gabriel n.gatica An.on.o Marquez Man.el A.San.hez CI2MA an. Departamen.o de In.en.er´ıa Matem´atica Universidad de Concepci´onCasilla 160-CConcepcionChile Departamen.o de Con.trucci´on.e In.en.er´ıa de Fabricacion Universidad de OviedoOviedoEspa-na.

We con.ider a n.n.stan.ard mixed method for the Stokes problem in.Rn.n.{2,3},with Dirichlet boun.ary con.ition.,in.which,after usin. the in.ompressibility con.ition.to elimin.te the pressure,the pseudostress ten.or s an. the velocity vector u become the on.y ***,we apply the Babuˇska-Brezzi theory to prove the well-posedn.ss of the correspon.in. con.in.ous an. discrete *** particular,we show that Raviart-Thomas elemen.s of order k≥0 for s an. piecewise polyn.mials of degree k for u en.ure un.que solvability an. stability of the associated Galerkin.*** addition.we in.roduce an. an.lyze an.augmen.ed approach for our pseudostress-velocity *** methodology employed is based on.the in.roduction.of the Galerkin.least-squares type terms arisin. from the con.titutive an. equilibrium equation.,an. the Dirichlet boun.ary con.ition.for the velocity,all of them multiplied by suitable stabilization.*** show that these parameters can.be chosen.so that the resultin. augmen.ed variation.l formulation.is defin.d by a stron.ly coercive bilin.ar form,when.e the associated Galerkin.scheme becomes well posed for an. choice of fin.te elemen. *** in.tan.e,Raviart-Thomas elemen.s of order k≥0 for s an. con.in.ous piecewise polyn.mials of degree k+1 for u become a feasible choice in.this ***,exten.ive n.merical experimen.s illustratin. the good performan.e of the methods an. comparin. them with other procedures available in.the literature,are provided.

关键词： Mixed fin.te elemen. pseudostress in.ompressible flow

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Cotton.pads-derived carbon.materials/reduced graphen. oxide modified with polypyrrole for electrode of supercapacitors

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Journ.l of En.rgy Chemistry 2024年第7期94卷 41-53页

作者： Ofelia MArias-Pin.do Elvis OLopez Ivon.e EMon.e RSoria-Martin.z An.on. Bazan.Aguilar Clemen.e Alfredo Luyo Caycho gabriel An.el Plan.s An.elica Maria Baen.-Mon.ada Laboratorio de In.estigacion.de Electroquimica Aplicada Facultad de Ciencias de la Universidad Nacional de IngenieriaAv.Tupac Amaru 210RimacLimaPeru Departmen. of Experimen.al Low En.rgy Physics Brazilian Center for Research in Physics(CBPF)Rio de Janeiro22290-180Brazi Un.versidad Tecn.logica del Peri Av.Arequipa 26515046 LimaPeru Cen.eror theevelopmen.of Adan.ed Materials an. n.n.techlogy Universidad NacionaldeIngeneria33LimaP Departamen.o de Quimica Universidad Nacional de Rio CuartoInstituto de Investigaciones en Tecnologias Energeticas y Materiales Avanzados(IITEMA)Ruta Nac.36Km 601(X5804BYA)RioCuartoCordobaArgentina

This study in.estigates the in.luen.e of electropolymerization.con.ition. on.the deposition.of polypyrrole(PPy)on.o cotton.derived carbon.fiber(CF)modified with reduced graphen. oxide(rGO)for supercapacitors application. usin. an.experimen.al/theorical *** surface modification.of CF by rGO an./or by PPy electrodeposited at 10,25 an. 50 mV s^(-1) was thoroughly examin.d physicochemical an. *** electrodes comprisin. CF-rGo-PPy,syn.hesized via electropolymerization.at 25 mV s^(-1),demon.trated a remarkable in.rease in.capacitan.e,showcasin.~742 F g^(-1) compared to 153 F g^(-1) for ***,n.(2)-surface area,XPS,an. TD-DFT approach revealed that the higher capacitan.e observed in.CF-rGo-PPy electrodes un.erscores the in.luen.e of morphology an. charged n.trogen.species on.the electrochemical performan.e of these modified ***,this electrode material achieves a specific capacitan.e reten.ion.of~96%of their in.tial capacitan.e after 10000 cycles at 0.5 A g^(-1) measured in.a two-electrodes cell *** work also discusses the in.luen.e of the scan.rate used for pyrrole electropolymerization.on.the pseudocapacitan.e con.ribution.of PPy an. its possible effect on.the porosity of the *** results highlight the importan.e of appropriate electropolymerization.con.ition. that allow obtain.n. the syn.rgistic effect between.CF,rGO an. PPy.

关键词： Supercapacitors Cotton.pads-derived carbon.fibers rGO PPy TD-DFT

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