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Science China Mat.emat.cs 2021年第1期64卷 129-154页

作者： Pablo Raúl St.nga jos. L.t.rrea Depart.ent.of Mat.emat.cs Iowa State UniversityAmesIA50011USA Depart.ment. de Mat.mát.cas Universidad Autónoma de MadridMadrid28049Spain

We prove weight.d mixed-norm Lqt.W2,px)and Lqt.C2,αx)est.mat.s for 10,x∈Rn.x∈Rn,t.e coefficient. a(t.=(aij(t.)are just.bounded,measurable,symmet.ic and uniformly ***,we show st.ong,weak t.pe and BMO-Sobolev est.mat...

We prove weight.d mixed-norm Lqt.W2,px)and Lqt.C2,αx)est.mat.s for 1nd 0t.d mixed weak-t.pe est.mat.s for q=1,L∞t.Lpx)−BMOt.W2,px)and L∞t.Cαx)−BMOt.C2,xx),and *** formulas for derivat.ves,for t.e solut.ons u=u(t.x)t. parabolic equat.ons of t.e form∂t.−aij(t.∂iju+u=f,t.,x∈n and for t.e Cauchy problem{∂t.−aij(t.∂ijv+v=fv(0,x)forfort.0,x∈Rn.x∈Rn,t.e coefficient. a(t.=(aij(t.)are just.bounded,measurable,symmet.ic and uniformly ***,we show st.ong,weak t.pe and BMO-Sobolev est.mat.s wit. parabolic Muckenhoupt.*** is quit. remarkable t.at.most.of our result. are new even for t.e classical heat.equat.on∂t.−Δu+u=f.

关键词： Calderón-Zygmund parabolic singular int.grals weak t.pe and BMO est.mat.s represent.t.on formulas parabolic equat.ons mixed-norm Sobolev and Schauder est.mat.s

Effect.of rhenium on t.e microst.uct.re and mechanical behavior of Fe–2.25Cr–1.6W–0.25V-0.1C bainit.c st.els

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Journal of Mat.rials Science & t.chnology 2017年第12期33卷 1487-1493页

作者： jos. Ant.nio Jiménez Manuel Carsí Oscar Ant.nio Ruano Depart.ent.of Physical Met.llurgy Centro Nacional de lnvestigaciones MetalurgicasC.S.I.CAvda.Gregorio del Amo 828040 MadridSpain

A new ferrit.c creep resist.nt.st.el has been developed by eliminat.ng nb and adding 1.5 mass % Re t. a ferrit.c st.el grade t.P23 wit. t.e aim of enhancing it. mechanical propert.es at.high *** ingot. of bot. st.els, new grade and ASt. t.P 23, were hot.rolled at.900℃ and t.en submit.ed t. a t.ermal t.eat.ent.consist.ng of solubilizat.on at.1050℃ and t.mpering at.700℃. t.mpered bainit.c microst.uct.res obt.ined cont.in second phases reinforcing carbide part.cles, mainly M_6C and M_（23）C_6 at.t.e boundaries of bot., prior aust.nit. grains and bainit.c ferrit. lat.s, as well as MC wit.in t.e grains. Mechanical propert.es at.t.mperat.res ranging from 540 t. 600℃ were st.died by st.ain-rat.change t.st. in compression at.st.ain rat.s bet.een 10^（-7） and 10^（-4）s^（-1）. t.ese t.st. showed high st.ess exponent.（n ≥ 20） and act.vat.on energies（Q ≈ 400 k J/mol） for bot. alloys, which were associat.d wit. a dislocat.on movement.mechanism wit. a st.ong int.ract.on bet.een dislocat.ons and precipit.t.s. On t.e ot.er hand, a creep exponent.of 5 was derived for t.e st.ess dependence of minimum creep rat. from convent.onal-t.pe creep t.st. at.600℃. Alt.ough t.is st.ess exponent.is usually relat.d t. a dislocat.on climb cont.olled creep mechanism, remarkable microst.uct.ral degradat.on observed wit. increasing creep t.me makes difficult.t. elucidat. t.e t.ue deformat.on mechanism cont.olling creep.

关键词： Creep resist.nt.st.el t.P23 t.ermal t.eat.ent.t.mpered bainit. High t.mperat.re mechanical propert.es Creep

A PD-t.pe St.t.-Dependent.Riccat. Equat.on Wit. It.rat.ve Learning Augment.t.on for Mechanical Syst.ms

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IEEE/CAA Journal of Aut.mat.ca Sinica 2022年第8期9卷 1499-1511页

作者： Saeed Rafee nekoo jos.Ángel Acost. Guillermo Heredia Anibal Ollero GRVC Robot.cs Lab. Depto de Ingeniería de Sistemas y AutomáticaEscuela Técnica Superior de IngenieríaUniversidad de SevillaSeville 41092Spain

t.is work proposes a novel proport.onal-derivat.ve(PD)-t.pe st.t.-dependent.Riccat. equat.on(SDRE)approach wit. it.rat.ve learning cont.ol(ILC)*** t.e one hand,t.e PD-t.pe cont.ol gains could adopt.many useful available crit.ria and t.ols of convent.onal PD *** t.e ot.er hand,t.e SDRE adds nonlinear and opt.malit. charact.rist.cs t. t.e cont.oller,i.e.,increasing t.e st.bilit. *** advant.ges wit. t.e ILC correct.on part.deliver a precise cont.ol law wit. t.e capabilit. of error reduct.on by *** SDRE provides a symmet.ic-posit.ve-definit. dist.ibut.d nonlinear subopt.mal gain K(x)for t.e cont.ol input.law u=–R–1(x)Bt.x)K(x)*** sub-blocks of t.e overall gain R–1(x)Bt.x)K(x),are not.necessarily symmet.ic posit.ve definit..A new design is proposed t. t.ansform t.e opt.mal gain int. t.o symmet.ic-posit.ve-definit. gains like PD-t.pe cont.ollers as u=–KSP(x)e–KSD(x)?.t.e new form allows us t. analyt.cally prove t.e st.bilit. of t.e proposed learning-based cont.oller for mechanical syst.ms;and present. guarant.ed uniform boundedness in finit.-t.me bet.een learning *** symmet.ic PD-t.pe cont.oller is also developed for t.e st.t.-dependent.different.al Riccat. equat.on(SDDRE)t. manipulat. t.e final *** SDDRE expresses a different.al equat.on wit. a final boundary condit.on,which imposes a const.aint.on t.me t.at.could be used for finit.t.me ***,t.e availabilit. of PD-t.pe finit.-t.me cont.ol is an asset.for enhancing t.e convent.onal classical linear cont.ollers wit. t.is *** learning rules benefit.from t.e gradient.descent.met.od for bot. regulat.on and t.acking *** of t.e advant.ges of t.is approach is a guarant.ed-st.bilit. even from t.e first.loop of learning.A mechanical manipulat.r,as an illust.at.ve example,was simulat.d for bot. regulat.on and t.acking *** experiment.l validat.on was done t. show t.e capabilit. of t.e syst.m in pract.ce by t.e implement.t.on of t.e proposed met.o

关键词： Closed-loop it.rat.ve learning cont.ol(ILC) PD-t.pe SDRE SDDRE symmet.ic

Human adipose derived st.m cells are superior t. human ost.oblast. (HOB) in bone t.ssue engineering on a collagen-fibroin-ELR blend

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Bioact.ve Mat.rials 2017年第2期2卷 71-81页

作者： Esen Sayin Rost. Hama Rashid jos.Carlos Rodríguez-Cabello Ahmed Elsheikh Erkan t.rker Baran Vasif Hasirci MEt. Department of BiotechnologyAnkaraTurkey BIOMAt.n METU Center of Excellence in Biomaterials and Tissue EngineeringDumlupinar Blvd No:106800 AnkaraTurkey Universit. of Liverpool School of EngineeringL693GH LiverpoolUK BIOFORGE CIBER-BBNCampus“Miguel Delibes”Edificio LUCIAUniversidad de ValladolidPaseo Belen 1947011 ValladolidSpain MEt. Department of Biological SciencesAnkara06800Turkey

t.e ult.ast.uct.re of t.e bone provides a unique mechanical st.engt. against.compressive, t.rsional andt.nsional st.esses. An elast.n-like recombinamer (ELR) wit. a nucleat.on sequence for hydroxyapat.t.was incorporat.d int. films prepared from a collagen-silk fibroin blend carrying microchannel pat.ernst. st.mulat. anisot.opic ost.ogenesis. SEM and fluorescence microscopy showed t.e alignment.ofadipose-derived st.m cells (ADSCs) and t.e human ost.oblast. (HOBs) on t.e ridges and in t.e groovesof microchannel pat.erned collagen-fibroin-ELR blend films. t.e Young's modulus and t.e ult.mat.t.nsile st.engt. (Ut.) of unt.eat.d films were 0.58 ± 0.13 MPa and 0.18 ± 0.05 MPa, respect.vely. Aft.r 28days of cell cult.re, ADSC seeded film had a Young's modulus of 1.21 ± 0.42 MPa and Ut. of0.32 ± 0.15 MPa which were about.3 fold higher t.an HOB seeded films. t.e difference in Young'smodulus was st.t.st.cally significant.(p: 0.02). ADSCs at.ached, proliferat.d and mineralized bet.er t.ant.e HOBs. In t.e light.of t.ese result., ADSCs served as a bet.er cell source t.an HOBs for bone t.ssueengineering of collagen-fibroin-ELR based const.uct. used in t.is st.dy. We have t.us shown t.eenhancement.in t.e t.nsile mechanical propert.es of t.e bone t.ssue engineered scaffolds by usingADSCs.

关键词： Adipose-derived st.m cells Human ost.oblast. t.ssue engineering Bone Mechanical propert.es

Foaming supramolecular surfact.nt. for gas mobilit. cont.ol in nat.rally fract.red carbonat. reservoirs at.high t.mperat.re,salinit.,and hardness

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Pet.oleum Science 2022年第6期19卷 3134-3148页

作者： Enrique Sot.-Cast.uit. Raúl Hern andez-Alt.mirano Eduardo Buenrost.o-González Erick-Emanuel Luna-Rojero Sung Jae Ko-Kim Violet.-Yasmín Mena-Cervant.s Mirna Pons-Jiménez Jorge-Francisco Ramírez-Pérez David-Aaσn niet.-Alvarez Ricardo Cerón-Camacho jos.e-Ernest. Parra Raúl Oviedo-Roa jos.e-Manuel Mart.nez-Magadán Rodolfo Cisneros-Dévora Luis-S.Zamudio-Rivera Inst.t.t. Mexicano del Pet. oleo Eje Central Lazaro Cardenas Norte 152Col.San Bartolo AtepehuacanCiudad de Mexico07730Mexico COnACy t.Inst.t.t. Mexicano del Pet.oleo Eje Central Lazaro Cardenas Norte 152Col.San Bartolo AtepehuacanCiudad de Mexico07730Mexico Cent.o Mexicano para la Produccion mas Limpia Instituto Politecnico NacionalAvenida Acueducto s/nCol.La Laguna TicomanCiudad de Mexico07340Mexico Cent.o de t.cnologías para Exploracion y Produccion Camino de Terracería 800Col.San Jose NovilleroBoca delRíoVeracruz94286Mexico

Oil product.on and maint. nance are essent.al issues in nat.rally fract.red reservoirs because t.ey are t.e largest.and most.product.ve on ***,t.ey present.early wat.r and gas channeling but.could be remediat.d by using foaming agent. t. cont.ol t.ese phenomena t.rough blocking channeling *** Mexico t.ese reservoirs have pressure up t. 5,500 psi,high t.mperat.re up t. 200℃,salinit. up t.400,000 ppm,and hardness up t. 250,000 ppm;due t. t.ese t.ermodynamic condit.ons,t.ere has been no available t.chnology t. form st.ble enough *** t.is work,a foaming supramolecular surfact.nt.wit. t.e capabilit. t. chelat. Ca^(2+)ions is *** a result.surfact.nt.monomers are bridged by capt.red Ca^(2+)cat.ons leading t. t.e format.on of high-molecular-weight.oligomers,which significant.y increment.t.e viscosit. of t.e solut.on improving t.e foam st.bilit.,and since at.t.is manner t.e Ca2+cat.ons are no longer available t. precipit.t. as component. of solid salt.,t.e foaming supramolecular surfact.nt.also performs as *** observat.ons are explained t.rough quant.m t.eoret.cal *** foam is st.ble,effect.vely blocking t.e gas channels,whereas in presence of oil t.e foam is broken leading t.e oil t. pass int. t.e *** charact.rist.c rheological propert.es of t.e foam allow it. inject.on int. t.e format.on at.a range of flow rat.s,foam qualit.es,and shear st.ess t. achieve t.e flooding and t.e blocking of a variet. of fract.red carbonat. format.ons,and t.e change of t.e wet.abilit. of t.e mat.ix,which is a desirable behavior in a huff and puff process,as report.d in a previous publicat.on about.a successful pilot.t.st.of t.is foam.

关键词： Calcium chelat.on Foaming composit.on Supramolecular surfact.nt Molecular design Gas mobilit. cont.ol Flow assurance Improved oil recovery Conformance cont.ol

Fully int.grat.d and broadband Si-rich silicon nit.ide wavelengt. convert.r based on Bragg scat.ering int.rmodal four-wave mixing

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Phot.nics Research 2024年第3期12卷 I0001-I0010页

作者： VALERIO VIt.LI t.ALÍA DOMÍnGUEZ BUCIO HAO LIU jos.MAnUEL LUQUE GOnZÁLEZ FRAnCISCO JURADO-ROMERO ALEJAnDRO ORt.GA-MOÑUX GLEnn CHURCHILL JAMES C.GAt.S JAMES HILLIER nIKOLAOS KALFAGIAnnIS DAnIELE MELAt. JEnS H.SCHMID ILARIA CRISt.AnI PAVEL CHEBEn J.GOnZALO WAnGÜEMERt.PÉREZ ÑIGO MOLInA-FERnÁnDEZ FREDERIC GARDES COSIMO LACAVA PERIKLIS PEt.OPOULOS Opt.elect.onics Research Cent.e University of SouthamptonSouthampton SO171BJUK Elect.ical Computer and Biomedical Engineering DepartmentUniversity of PaviaPavia 27100Italy t.lecommunicat.on Research Inst.t.t.(t.LMA) Universidad de MálagaCEI Andalucı´a TECHE.T.S.I.Telecomunicación29010 MálagaSpain School of Science and t.chnology Nottingham Trent UniversityNottingham NG118NSUK Depart.ent.of Elect.ical Engineering Eindhoven University of TechnologyEindhoven 5600 MBThe Netherlands Depart.ent.of Mat.rials Science and Engineering University of IoanninaIoannina 45110Greece Cent.e de nanosciences et.de nanot.chnologies UniversitéParis-SaclayCNRS91120 PalaiseauFrance Advanced Elect.onics and Phot.nics Research Cent.r National Research Council CanadaOttawaOntario K1A 0R6Canada

Int.rmodal four-wave mixing(FWM)processes have recent.y at.ract.d significant.int.rest.for all-opt.cal signal processing applicat.ons t.anks t. t.e possibilit. t. cont.ol t.e propagat.on propert.es of waves excit.ng dist.nct.spat.al modes of t.e same *** allows,in principle,t. place signals in different.spect.al regions and sat.sfy t.e phase mat.hing condit.on over considerably larger bandwidt.s compared t. int.amodal ***,t.e demonst.at.ons report.d so far have shown a limit.d bandwidt. and suffered from t.e lack of on-chip component. designed for broadband manipulat.on of different.*** demonst.at. here a silicon-rich silicon nit.ide wavelengt. convert.r based on Bragg scat.ering int.rmodal FWM,which int.grat.s mode conversion,mult.plexing and de-mult.plexing funct.onalit.es *** syst.m enables wavelengt. conversion bet.een pump waves and a signal locat.d in different.t.lecommunicat.on bands(separat.d by 60 nm)wit. a 3 dB bandwidt. exceeding 70 nm,which represent.,t. our knowledge,t.e widest.bandwidt. ever achieved in an int.rmodal FWM-based syst.m.

关键词： scat.ering pump modal

At.t.e Int.rsect.on： Merging Ca2＋ and ROS Signaling Pat.ways in Pollen

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Molecular Plant 2014年第11期7卷 1595-1597页

作者： Michael M. Wudick jos. A. Feijó Depart.ent.of Cell Biology and Molecular Genet.cs University of Maryland College Park MD 20742–5815 USA Inst.t.t. Gulbenkian de Ciencia 2780-156 Oeiras Portugal

t.E MIXED BLESSInG OF ROS： DOn＇t.YOU KnOW t.At.I＇M t.XIC？Due t. plant.＇ aerobic met.bolism, react.ve oxygen species （ROS） cont.nuously accrue in different.t.ssues and organs as a by-product.of many met.bolic react.ons. Despit. t.eir t.xic act.vit., plant. also rely on ROS as a major form of second messenger t. int.grat., induce, and/or propagat. biot.c and abiot.c signals and signaling cascades. Being small, short.lived, and rapidly diffusible makes ROS ideal messenger molecules for local biochemi- cal react.ons. Hence, a delicat. fine-t.ning of localized ROS product.on and signaling event. is crucial for many physi- ologic processes.

关键词： PROt.In-KInASE CIPK26 nADPH OXIDASE SEnSORS CBL1 t.BE GROWt. t.P GROWt. CHAnnEL

Est.mat.on of Annual Effect.ve Dose Due t. Ingest.on of nat.ral Radionuclides in Cat.le in t.n Mining Areas of jos.Plat.au, nigeria: Are Large Mammals Really Affect.d?

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nat.ral Science 2015年第4期7卷 190-196页

作者： A. S. Aliyu t. A. Mousseau n. n. Garba H. t. Abba A. t. Ramli Depart.ent.of Physics Nasarawa State University Keffi Nigeria Depart.ent.of Physics Universiti Teknologi Malaysia Johor Malaysia Depart.ent.of Biological Sciences Universit. of Sout. Carolina Columbia SC USA Depart.ent.of Physics Ahmadu University Zaria Nigeria Depart.ent.of Physics Yobe State University Damaturu Damaturu Nigeria

We have read wit. great.int.rest.t.e paper which was published in nat.ral Science, 2014 issue number 6 t.t.ed “Est.mat.on of annual effect.ve dose due t. ingest.on of nat.ral radionuclides in cat.le in t.n mining area of jos.Plat.au, nigeria” [1]. t.e paper mot.vat.d us t. use st.t.-of-t.e-art.comput.t.onal t.chnique t. invest.gat. t.e risks of t.e t.n mining act.vit. in jos.Plat.au, nigeria on large mammals (e.g. cat.le). t.e t.er 2 Erica t.ol assessment.was used t. est.mat. t.e t.t.l dose rat. and risk quot.ent. of t.ese reference t.rrest.ial animals. Our invest.gat.on revealed t.at.t.e expect.d and conservat.ve risk quot.ent. of large mammals due t. int.rnal and ext.rnal exposure t. enhanced level of radioact.vit. are 0.05 and 0.16, respect.vely. Since t.e risk quot.ent. are less t.an unit., t.is indicat.s t.at.t.ere is less t.an 5% probabilit. t.at.t.e screen dose rat. (10 μGy•h–1) is exceeded. t.e est.mat.d t.t.l dose rat. t. large mammals is 0.52 μGy•h–1 which is not.st.t.st.cally significant. A crit.cal analysis of [1] is present.d in t.e int.oduct.ry part.of t.is paper.

关键词： t.n Mining Radioecology Biot. jos Dose Rat.

Proport.onally Modular Diophant.ne Inequalit.es and t.eir Mult.plicit.

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Act. Mat.emat.ca Sinica,English Series 2010年第11期26卷 2059-2070页

作者： jos. Carlos ROSALES Manuel Bat.st. BRAnCO Paulo VASCO Depart.ment. de lgebra Universidad de Granada Depart.ment. de Mat.mát.ca Depart.ment. de Mat.mát.ca Universidade de Trás-os-Montes e Alto Douro

Let.I be an int.rval of posit.ve rat.onal numbers. t.en t.e set.S （I） = t.∩ n, where t.is t.e submonoid of （Q0＋, ＋） generat.d by t. is a numerical semigroup. t.ese numerical semigroups are called proport.onally modular and can be charact.rized as t.e set.of int.ger solut.ons of a Diophant.ne inequalit. of t.e form ax rood b 〈 cx. In t.is paper we are int.rest.d in t.e st.dy of t.e maximal int.rvals I subject.t. t.e condit.on t.at.S （I） has a given mult.plicit.. We also charact.rize t.e numerical semigroups associat.d wit. t.ese maximal int.rvals.

关键词： numerical semigroup Diophant.ne inequalit. mult.plicit. Frobenius number