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Elastically restrained Berno.lli-Euler beams applied to.ro.ary machinery mo.elling

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Acta mechanica Sinica 2011年第1期27卷 56-62页

作者： Tiago.A.N.silva Nuno.m.m.maia ISEL Polytechnic Institute of LisbonDepartment of Mechanical EngineeringRua Conselheiro Emídio Navarro IDmEC-IST Technical University of LisbonDepartment of Mechanical Engineering

Facing the lateral vibratio. pro.lem o. a machine ro.o. as a beam o. elastic suppo.ts in bending,the autho.s deal with the free vibratio. o. elastically restrained Berno.lli-Euler beams carrying a finite number o. co.centrated elements alo.g their *** o. Rayleigh’s quo.ient,an iterative strategy is develo.ed to.find the appro.imated to.sio.al stiffness co.fficients,which allo.s the reco.ciliatio. between the theo.etical mo.el results and the experimental o.es,o.tained thro.gh impact *** mentio.ed algo.ithm treats the vibratio. o. co.tinuo.s beams under a determined set o. bo.ndary and co.tinuity co.ditio.s, including different to.sio.al stiffness co.fficients and the effect o. attached co.centrated masses and ro.atio.al inertias, no. o.ly in the energetic terms o. the Rayleigh’s quo.ient but also.o. the mo.e shapes,co.sidering the shape functio.s defined in *** lo.ding cases are examined and examples are given to.illustrate the validity o. the mo.el and accuracy o. the o.tained natural frequencies.

关键词： Transverse vibratio. o. beams · Elastic suppo.ts · To.sio.al stiffness co.fficients

mapping o. the Brazilian Gro.ps Studying Nano.ellulo.e

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Jo.rnal o. Renewable materials 2019年第5期7卷 429-440页

作者： Asaph Armando.Jacinto.márcia Aparecida da silva Spinacé Center o. Natural and Human Sciences Federal University of ABCSanto AndréSPBrazil

The nano.ellulo.e is a material that has gained much attentio. in the recent ***,the relevance o. Brazil in this field was evaluated co.cerning the scientific publicatio.s in Web o. ***,the Brazilian gro.ps were mapped using a biblio.etric pro.edure o. these ***,mo.e facto.s were analyzed fro. them *** were the so.rces to.extract the nano.ellulo.e in Brazil,the metho.s to.do.it,the characterizatio.s to.determine its dimensio.s and the funding agencies o. these *** results identified 69 Brazilian ***,the bacterial cellulo.e was the mo.t co.mo. *** the acid hydro.ysis was the mo.t used *** its turn,the size characterizatio. was mo.tly by scanning electro. *** last,the mo.t impo.tant agencies were the CNPq,the CAPES and the *** these po.nts,it was po.sible to.suggest the o.po.tunities to.develo. the nano.ellulo.e research in Brazil.

关键词： Nano.ellulo.e biblio.etry sciento.etrics scientific publicatio. web o. science

Luminescent po.ymer electro.ytes based o. chito.an and co.taining euro.ium triflate

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Jo.rnal o. Rare Earths 2016年第7期34卷 661-666页

作者： R.Alves A.S.S.de Camargo.A.Pawlicka m.m.silva Center o. Chemistry University of MinhoGualtar4710-057 BragaPortugal Sao.Carlo. Institute o. Physics University of Sao Paulo13566-590 Sao Carlos-SPBrazil Sao.Carlo. Institute o. Chemistry University of Sao Paulo13566-590 Sao Carlos-SPBrazil

So.id po.ymer electro.ytes based o. chito.an and euro.ium triflate were prepared by so.vent casting and characterized by X-ray diffractio., scanning electro. micro.co.y （SEm）, ato.ic fo.ce micro.co.y （AFm）, and pho.o.uminescence spectro.co.y. The X-ray diffractio. exhibited that the samples were essentially amo.pho.s with o.ganized regio.s o.er the who.e range o. the salt co.tent studied. The AFm analysis demo.strated that the smo.ther sample had ro.ghness o. 4.39 nm. Surface visualizatio. thro.gh SEm revealed go.d ho.o.eneity witho.t any phase separatio. fo. mo.e co.ductive samples and the less co.ductive sho.ed so.e im- perfectio.s o. the surface. The emissio. and excitatio. spectra displayed the characteristic bands o. Eu（CF3So.）3 in additio. to.bro.d bands co.respo.ding to.the po.ymer ho.t. The excited state 5D0 lifetime values ranged fro. 0.29-0.37 ms fo. the studied samples.

关键词： so.id po.ymer electro.ytes natural po.ymers pho.o.uminescence spectro.co.y rare earths

mULTIo.JECTIVE Ro.TING IN mULTISERVICE mPLS NETWo.KS WITH TRAFFIC SPLITTING-A NETWo.K FLo. APPRo.CH

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Jo.rnal o. Systems Science and Systems Engineering 2015年第4期24卷 389-432页

作者： Rita Girao.silva Jo.e Craveirinha Jo.o.Climaco.m.Eugenia Captivo Department o. Electrical and Co.puter Engineering University of Coimbra Polo ⅡPinhal de Marrocos P-3030-290 Co.mbra Portugal Institute o. Co.puters and Systems Engineering o. Co.mbra(INESC-Co.mbra)R.Antero.de Quental 199 P-3000-033 Co.mbra Portugal Centro.de Investigacao.o.eracio.al Faculdade de CienciasUniversidade de Lisboa Campo GrandeBloco C6Piso 4 P-1749-016 Lisbo. Portugal

A multio.jective ro.ting mo.el fo. multipro.o.o. Label Switching netwo.ks with multiple service types and traffic splitting is presented in this paper. The ro.ting pro.lem is fo.mulated as a multio.jective mixed-integer pro.ram, where the co.sidered o.jectives are the minimizatio. o. the bandwidth ro.ting co.t and the minimizatio. o. the lo.d co.t in the netwo.k links with a co.straint o. the maximal splitting o. traffic trunks. Two.different exact metho.s are develo.ed fo. so.ving the fo.mulated pro.lem, o.e based o. the classical co.straint metho. and ano.her based o. a mo.ified co.straint metho.. A very extensive experimental study, with results o. netwo.k perfo.mance measures in vario.s reference test netwo.ks and in rando.ly generated netwo.ks, is also.presented and its results are discussed.

关键词： Ro.ting mo.els multio.jective o.timizatio. teleco.municatio. netwo.ks netwo.k flo.appro.ch traffic splitting

Understanding the co.ro.io. o. mg allo.s in in vitro.urinary tract co.ditio.s: A step fo.ward to.ards a bio.egradable metallic ureteral stent

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Jo.rnal o. magnesium and Allo.s 2023年第11期11卷 4301-4324页

作者： margarida Pacheco.Ivo.m.Aro.o.Jo.na m.silva Sviatlana V.Lamaka Jan Bo.len maria Nienaber Dietmar Letzig Estêvão.Lima Alexandre A.Barro. Rui L.Reis 3B’s Research Gro.p-Research Institute o. Bio.aterials Biodegradables and BiomimeticsUniversity of MinhoGuimarãesPortugal ICVS/3B’s-PT Go.ernment Asso.iate Labo.ato.y Braga/GuimarãesPortugal Institute o. Surface Science Helmholtz-Zentrum hereon GmbHGermany Institute o. material and Pro.ess Design Helmholtz-Zentrum hereon GmbHGermany Scho.l o. Health Sciences Life and Health Sciences Research Institute(ICVS)University of MinhoBragaPortugal

Ureteral stents play a fundamental ro.e in mo.ern time uro.o.y. Ho.ever, fo.lo.ing the deplo.ment, stent-related sympto.s are frequent and affect patient health and quality o. life. Using bio.egradable metals as ureteral stent materials have emerged as a pro.ising strategy, mainly due to.the impro.ed radial fo.ce and slo.er degradatio. rate expected. Therefo.e, this study aimed to.characterize different bio.egradable metals in urinary tract enviro.ment to.understand their pro.ensity fo. future utilizatio. as base materials fo. ureteral stents. The co.ro.io. o. 5 mg allo.s - AZ31, mg-1Zn, mg-1Y, pure mg, and mg-4Ag - under simulated urinary tract co.ditio.s was accessed. The co.ro.io. layer o. the different allo.s presented co.mo. elements, such as mg(o.)_(2), mgo. and pho.phate-co.taining pro.ucts, but slight variatio.s in their chemical co.po.itio.s were detected. The co.ro.io. rate o. the different metals varied, which was expected given the differences in the co.ro.io. layers. o. to. o. this, the findings o. this study highlighted the significant differences in the samples' co.ro.io. and co.ro.io. layers when in stagnant and flo.ing co.ditio.s. With the results o. this study, we co.cluded that mg-1Zn and mg-4Ag presented a higher pro.ensity fo. lo.alized co.ro.io., pro.ably due to.a less pro.ective co.ro.io. layer;mg-4Ag co.ro.ed faster than all the o.her fo.r allo.s,and mg-1Y sto.d o.t due to.its distinct co.ro.io. pattern, that sho.ed to.be mo.e ho.o.eneo.s than all the o.her fo.r samples, making this o.e mo.e attractive fo. the future studies o. bio.egradable metals.

关键词： Bio.egradable metals magnesium allo.s Lo.alized co.ro.io. Bio.egradable metallic ureteral stent

Io. dynamics into.different po.e size distributio.s in supercapacito.s under co.pressio.

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Jo.rnal o. Energy Chemistry 2023年第5期80卷 110-119,I0004页

作者： Jo.o.Pedro.Aguiar do. Santo. Cesar J.B.Pagan Rafael Vicentini Reinaldo.F.Teófilo.Renato.Beraldo.Leo.ardo.m.Da silva Hudso. Zanin Brazilian Renewable Energies Center for Innovation on New EnergiesSchool of Electrical and Computer EngineeringUniversity of CampinasAv.Albert Einstein 40CampinasSP13083-852Brazil Scho.l o. Electrical and Co.puter Engineering University of CampinasSP 13083-852Brazil multivariate Chemical Data Analysis Labo.ato.y Department of ChemistryUniversidade Federal de Viçosa36570-900 ViçosaMGBrazil Department o. Chemistry Laboratory of Fundamental and Applied ElectrochemistryFederal University of Jequitinhonha and Mucuri's ValleyRodovia MGT 367km 5835000 Alto da Jacuba39100-000DiamantinaMGBrazil

Co.pressing supercapacito.(SCs)electro.e is essential fo. impro.ing the energy sto.age characteristics and minimizing io.s’distance travel,faradaic reactio.s,and o.erall o.mic *** co.prising the io. dynamics in SC electro.es under co.pressio. are still ***,the io.ic dynamics o. five aqueo.s electro.ytes in electro.es under co.pressio. were studied in this wo.k fo. tracking electro.hemical and structural changes under mechanical stress.A superio.ic state is fo.med when the electro.e is co.pressed until the micro.o.es match the dimensio.s with the electro.yte’s hydrated io. sizes,which increases the *** excessive co.pressio. is applied,the accessible po.e regio.s decrease,and the capacitance ***,as the studied hydrated io.s have different dimensio.s,the match between io./po.e sizes *** the Lio. and NaClo.electro.ytes,increasing the pressure fro. 60 to.120 and 100 PSI raised the capacitance fro. 13.5 to.35.2 F g^(-1)and 30.9 to.39.0 F g^(-1),***,the Ko. electro.yte with the lo.est and LiCl with the biggest co.binatio. o. hydrated io. size have their po.nt o. maximum capacitance(39.5 and 36.7F g^(-1))achieved at 140 and 80 PSI,*** LiCl and KCl electro.ytes,o.erco.pressio. causes a dro. in capacitance higher than 23%.

关键词： mechanic co.pressio. Po.e size distributio. lo. dynamics Activated carbo. Supercapacito.s

Litter remo.al impacts o. so.l bio.iversity and eucalypt plantatio. develo.ment in the seaso.al tro.ics

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Jo.rnal o. Fo.estry Research 2023年第3期34卷 735-748页

作者： Jo.as Inko.te Barbara Bo.fim Sarah Camelo.da silva marco.Bruno.Xavier Valadão.márcio.Go.çalves da Ro.a Ro.erta Batista Viana Alcides Gatto.Reginaldo.SPereira Department o. Fo.estry Engineering University of BrasiliaBrasíliaDistrito FederalBrazil Climate and Eco.ystem Sciences Divisio. Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA SESI/SENAI So.ial Service Industry Santa Catarina StateChapecóBrazil

The little layer o. tree plantatio.s pro.ides primary nutrients fo. uptake,buff ers changes in so.l mo.sture,and pro.ides habitat and substrate to.so.l epigeic ***,this layer in eucalypt plantatio.s is o.ten remo.ed to.reduce fuel lo.d during the fi re seaso. in the Brazilian savanna(Cerrado..Therefo.e,it is necessary to.quantify the eff ects o. changes in litter dynamics o. the functio. o. these plantatio.s,o. key nutrient cycling pro.esses and o. epigeic fauna diversity and *** two.adjacent stands(o.e juvenile and o.e mature),the co.sequences o. two.years o. litter remo.al were quantifi ed as mo.thly litterfall,leaf and fi ne wo.d litter deco.po.itio.,epigeic fauna abundance and diversity,so.l bio.eo.hemical variables,and tree diameter and basal area *** litterfall rates in juvenile and mature stands did no. change with litter remo.al o.er the study *** litterfall ranged fro. 4.1 to.4.9 mg ha^(−1)a^(−1)in litter remo.al plo.s and fro. 3.9 to.4.8 mg ha^(−1)a^(−1)in co.tro. *** wo.d litter deco.po.itio. was slo.er in litter remo.al plo.s co.pared to.co.tro.s,while leaf deco.po.itio. rates were similar in *** years o. litter remo.al in the juvenile stand did no. aff ect to.so.l bio.eo.hemical parameters but decreased available pho.pho.us at 20–40 cm depth relative to.*** the mature stand,to.al catio. exchange capacity(0–20 cm)was higher in co.tro.s(6.4 cmo. c dm^(−3))relative to.litter remo.al plo.s(6.3 cmo. c dm^(−3)),while so.l mo.sture(0–40 cm depth)was lo.er in litter remo.al(25.45 m 3 m^(−3))co.pared to.co.tro. plo.s(26 m^(3)m^(−3))in the dry seaso..A no.-metric multidimensio.al scaling o.dinatio. revealed an increased ho.o.eneity in epigeic fauna where litter was ***,deco.po.itio.,diameter increment,fo.r so.l physical parameters and fo.rteen chemical parameters at 0–20 and 20–40 cm depth explained the diff erences in so.l epigeic fauna co.po.itio. between litter remo.al and co.tro. p

关键词： Cerrado Nutrient cycling So.l eco.o.y So.l epigeic fauna Plantatio. management

Fo.d,po.ypheno.s and neuro.ro.ectio.

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Neural Regeneratio. Research 2017年第4期12卷 582-583页

作者： Rui F.m.silva Lea Po.acnik Research Institute fo. medicines(imed.ULisbo.)and Department o. Bio.hemistry and Human Bio.o.y(DBBH) Faculty of PharmacyUniversidade de LisboaLisboaPortugal Department o. Fo.d Science and Techno.o.y Biotechnical FacultyUniversity of LjubljanaLjubljana Slovenia

Neuro. lo.s and neuro.egeneratio. are the co.mo. deno.- inato.s o. what are kno.n as neuro.egenerative diseases. Altho.gh the clinical manifestatio.s o. so.e neuro.egenerative diseases are mainly asso.iated with ageing, it is believed that o.set o. disease and neuro.al death o.curs pro.ressively thro.gh life, well beto.e the first sympto.s appear. So. o.e o. the main dilemmas regarding neuro.egenerative disease ther-apies is that treatment o.ten starts lo.g after the neuro.egeneratio. has o.curred, when a great number o. neuro.s have already been lo.t. Furthermo.e,

关键词： Fo.d EGCG

Helico.acter pylo.i in dental plaque and sto.ach o. patients fro. No.thern Brazil

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Wo.ld Jo.rnal o. Gastro.ntero.o.y 2010年第24期16卷 3033-3039页

作者： mnica Baraúna Assumpo.Luisa Caricio.martins Hivana Patricia melo.Barbo.a Katarine Anto.ia do. Santo. Barile Sintia silva de Almeida Paulo.Pimentel Assumpo.Tereza Cristina de o.iveira Co.velo Endo.co.y Department Joo de Barros Barreto University Hospital Immuno.atho.o.y Labo.ato.y Nucleus of Tropical Medicine Federal University of Pará Immuno.enetics Labo.ato.y Federal University of Pará Paulo.Pimentel Assumpo Surgery Department Joo de Bar-ros Barreto University Hospital

AIm: To.establish whether virulence facto. genes vacA and cagA are present in Helico.acter pylo.i (H. pylo.i) retrieved fro. gastric muco.a and dental plaque in pa-tients with dyspepsia. mETHo.S: Cumulative dental plaque specimens and gastric bio.sies were submitted to.histo.o.ical exami-natio., rapid urease test and po.ymerase chain reac-tio. (PCR) assays to.detect the presence o. cagA and vacA ***: Detectio. o. H. pylo.i fro. dental plaque and gastric bio.sy samples was greater by PCR co.-pared to.histo.o.ical examinatio. and the rapid ure-ase test. DNA fro. H. pylo.i was detected in 96% o. gastric muco.a samples and in 72% o. dental plaque samples. Sixty-three (89%) o. 71 dental plaque sam-ples that were H. pylo.i-po.itive also.exhibited identical vacA and cagA geno.ypes in gastric muco.a. The mo.t co.mo. geno.ype was vacAs1bm1 and cagA po.itive, either in dental plaque o. gastric muco.a. These viru-lent H. pylo.i iso.ates were invo.ved in the severity o. clinical ***: These patho.enic strains were fo.nd simultaneo.sly in dental plaque and gastric muco.a, which suggests that gastric infectio. is co.related with the presence o. H. pylo.i in the mo.th.

关键词： Helico.acter pylo.i Gastric muco.a Dental plaque cagA vacA