检索结果-南通市图书馆

Num.rica. Solution of Pa.tia. Differentia. Equa.ions in a.bitra.y Sha.ed Dom.ins Using Ca.tesia. Cut-Stencil Finite Difference *** II:Higher-Order Schem.s

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Num.rica. m.them.tics(Theory,m.thods a.d a.plica.ions) 2022年第3期15卷 819-850页

作者： m.Esm.eilza.eh R.m.barron Depa.tm.nt of m.cha.ica. Automotive&Materials EngineeringUniversity of WindsorWindsorOntarioN9B 3P4Canada Depa.tm.nt of m.them.tics&Sta.istics University of WindsorWindsorOntarioN9B 3P4Canada Depa.tm.nt of m.cha.ica. Engineering South Tehran BranchIslamic Azad UniversityTehranP.C:***Iran

Com.a.t higher-order(HO)schem.s for a.new finite difference m.thod,referred to a. the Ca.tesia. cut-stencil FD m.thod,for the num.rica. solution of the convection-diffusion equa.ion in com.lex sha.ed dom.ins ha.e been a.dressed in this *** Ca.tesia. cut-stencil FD m.thod,which em.loys 1-D qua.ra.ic tra.sform.tion functions to m.p a.non-uniform.uncut or cut)physica. stencil to a.uniform.com.uta.iona. stencil,ca. be com.ined with com.a.t HO Pa.´e-Herm.tia. form.la.ions to produce HO cut-stencil *** m.dified pa.tia. differentia. equa.ion technique is used to develop form.la. for the loca. trunca.ion error for the cut-stencil HO *** effect of va.ious HO a.proxim.tions for Neum.nn bounda.y conditions on the solution a.cura.y a.d globa. order of convergence a.e *** num.rica. results for second-order a.d com.a.t HO form.la.ions of the Ca.tesia. cut-stencil FD m.thod ha.e been com.a.ed for test problem. using the m.thod of m.nufa.tured solutions.

关键词： Ca.tesia. cut-stencil finite difference m.thod com.a.t higher-order form.la.ion irregula. dom.in Neum.nn bounda.y conditions loca. trunca.ion error

Solvent-free m.crowa.e-a.sisted synthesis of tenorite na.opa.ticle-decora.ed m.lti-wa.led ca.bon na.otubes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of m.teria.s Science & Technology 2019年第6期35卷 1121-1127页

作者： Jennifer a. Rudd Ca.hren E. Gowenlock Virginia.Gom.z Ewa.Ka.im.erska.a.dulla. m. a.-Enizi Enrico a.dreoli a.drew R. barron Energy Sa.ety Resea.ch Institute Swansea University Bay Campus Swansea SA1 8EN UK Chem.stry Depa.tm.nt College of Sciences KingSaud University Riyadh Saudi Arabia Depa.tm.nt of Chem.stry Rice University Houston Texas 77005 USA Depa.tm.nt of m.teria.s Science a.d Na.oengineering Rice University Houston Texas 77005 USA

Copper-decora.ed ca.bon na.otubes(CNTs) ha.e im.orta.t a.plica.ions a. precursors for ultra.onductive copper wires. Tenorite-decora.ed CNTs(CuO-CNTs) a.e idea. ca.dida.es a.d a.e currently developed using la.orious processes. For this rea.on, we ha.e developed a.fa.ile a.d sca.a.le m.thod for the synthesis of CuO-CNTs from.copper a.eta.e. It wa. found tha. the optim.l loa.ing of copper a.eta.e onto the CNTs wa. 23.1 wt% a.d tha. three 1-m.nute m.crowa.e trea.m.nts were sufficient for the decom.osition of copper a.eta.e to copper oxide. The loa.ing of copper oxide onto the na.otubes wa. confirm.d using X-ra. photoelectron spectroscopy, energy-dispersive X-ra. spectroscopy a.d therm.gra.im.tric a.a.ysis. The m.teria.s were cha.a.terised using X-ra. diffra.tion a.d sca.ning electron m.croscopy.

关键词： m.crowa.e-a.sisted synthesis m.lti-wa.led ca.bon na.otubes Tenorite Na.opa.ticle

a.tolysosom.l a.idifica.ion im.a.rm.nt a. a.m.dia.or for TNFR1 induced neurona. necroptosis in a.zheim.r’s disea.e

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Neura. Regenera.ion Resea.ch 2024年第9期19卷 1869-1870页

作者： Evridiki a.im.kidou Richa.d Reynolds a.na.m.barron Chih Hung Lo Depa.tm.nt of Clinica. Neurosciences University of CambridgeCambridgeUK Depa.tm.nt of Bra.n Sciences Faculty of MedicineImperial College LondonLondonUK Lee Kong Chia. School of m.dicine Nanyang Technological UniversitySingaporeSingapore

Neurona. necroptosis-a. em.rging form.of regula.ed cell dea.h a.socia.ed with neuroinfla.0}a.ory signa.ing:a.zheim.r’s disea.e(a.)is cha.a.terized by the presence of extra.ellula. a.0}loid-β(a.)pla.ues a.d intra.ellula. ta. neurofibrilla.y ta.gles a. well a. progressive neurona. *** evidence ha. suggested tha. prolonged neuroinfla.0}a.ion with increa.ed levels of cytokines,a.ising from.neurona. injury,inna.e im.une responses from.glia. cells,a.d periphera. infla.0}a.ion,lea.s to neurona. dea.h a.d a. progression.

关键词： a.zheim.r dea.h ta. a.

3-D m.deling of a.ia. Fa.s

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

a.plied m.them.tics 2013年第4期4卷 632-651页

作者： a.i Sa.ili Ba.ha. Zogheib Rona.d m. barron Depa.tm.nt of m.them.tics a.d Na.ura. Sciences American University of Kuwait Salmiya Kuwait Depa.tm.nt of m.them.tics a.d Physics Lebanese International University Beirut Lebanon Depa.tm.nt of m.them.tics a.d Sta.istics University of Windsor Windsor Canada

In this pa.er we present a.full-geom.try Com.uta.iona. Fluid Dyna.0}cs (CFD) m.deling of a.r flow distribution from.a. a.tom.tive engine cooling fa.. To sim.lify geom.tric m.deling a.d m.sh genera.ion, different solution dom.ins ha.e been considered, the Core m.del, the Extended-Hub m.del, a.d the m.ltiple Reference Fra.0} (m.F) m.del. We a.so consider the effect of blocka.e on the flow a.d pressure fields. The Extended-Hub m.del sim.lifies m.shing without com.rom.sing a.cura.y. Optim.l loca.ions of the com.uta.iona. bounda.y conditions ha.e been determ.ned for the m.F m.del. The blocka.e results in significa.t difference in pressure rise, a.d the difference increa.es with increa.ing flow ra.es. Results a.e in good a.reem.nt with da.a.obta.ned from.a. experim.nta. test fa.ility. Fina.ly, we consider Sim.lified Fa. m.dels which sim.lifies geom.tric m.deling a.d m.sh genera.ion a.d significa.tly reduce the a.0}unt of com.uter m.m.ry used a.d tim. needed to ca.ry out the ca.cula.ions. Different m.dels a.e com.a.ed in rega.ds to efficiency a.d a.cura.y. The effect of using da.a.from.different pla.es is considered to optim.ze perform.nce. The effect of blocka.e on sim.lified m.dels is a.so considered.

关键词： CFD m.deling m.sh Genera.ion Engine Cooling Fa.

Ra.ica. a.dition of Perfluorina.ed a.kyl Iodides to m.lti- La.ered Gra.hene a.d Single-Wa.led Ca.bon Na.otubes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Na.o Resea.ch 2010年第2期3卷 138-145页

作者： Christopher E.Ha.0}lton Ja. R.Lom.da.Zhengzong Sun Ja.0}s m.Tour a.drew R.barron Richa.d E.Sm.lley Institute for Na.osca.e Science a.d Technology Department of Chemistry and Department of Mechanical Engineering and Materials ScienceRice UniversityHoustonTexas 77005USA

a.sim.le one-pot rea.tion tha. serves to functiona.ize gra.hite na.osheets(gra.hene)a.d single-wa.led ca.bon na.otubes(SWNTs)with perfluorina.ed a.kyl groups is *** ra.ica. a.dition of 1-iodo-1H,1H,2H,2H-perfluorododeca.e to ortho-dichlorobenzene suspensions of the ca.bon na.om.teria. is initia.ed by therm.l decom.osition of benzoyl ***,UV photolysis of 1-iodo-perfluorodeca.e serves to functiona.ize the ca.bon ***-SWNTs,perfluorododecyl-gra.hene,a.d perfluorodecyl-gra.hene a.e cha.a.terized by infra.ed(IR)a.d Ra.0}n spectroscopy,X-ra. photoelectron spectroscopy(XPS),therm.gra.im.tric a.a.ysis(TGa.,a.d a.om.c force m.croscopy(a.m..The products show enha.ced dispersa.ility in CHCl3 a. com.a.ed to unfunctiona.ized sta.ting *** a.va.ta.e of this one-pot functiona.iza.ion procedure lies in the use of pristine gra.hite a. sta.ting m.teria. thereby a.oiding the use of ha.sh oxidizing conditions.

关键词： Na.otube single-wa.led ca.bon na.otube gra.hene ra.ica. a.dition

Bubbling to Jetting Tra.sition during a.gon Injection in m.lten Steel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journa. of Engineering a.d Technology 2020年第4期8卷 605-616页

作者： m.guel a. barron Joa. Reyes Dulce Y. m.dina Depa.ta.0}nto de m.teria.es Universidad Autonoma Metropolitana Azcapotzalco Mexico City Mexico

Bubbling to Jetting Tra.sition is of the outm.st im.orta.ce in m.ta.lurgica. processes given tha. the flow regim. influences the refining ra.es, the refra.tory erosion, a.d the blocka.e of injection nozzles. Bubbling to jetting tra.sition during subsonic bottom.injection of a.gon in m.lten steel is studied here. The effect of the m.lten steel height, the injection velocity, the nozzle dia.0}ter, a.d the m.lten steel viscosity on the jet height a.d the bubbling to jetting tra.sition is num.rica.ly a.a.yzed using Com.uta.iona. Fluid Dyna.0}cs. Five subsonic a.gon injection velocities a.e considered: 5, 25, 50, 100 a.d 150 m.s. Three va.ues of the m.ta. height a.e ta.en into a.count, na.0}ly 1.5 m. 2 m.a.d 2.5 m. Besides, three va.ues of the nozzle dia.0}ters a.e considered: 0.001 m. 0.005 m.a.d 0.01 m. Fina.ly, three va.ues of the m.lten steel viscosity a.e supposed: 0.0067, 0.1 a.d 1 kg/(m.0}a.>s). It is observed that for the argon-molten steel system, the bubbling to jetting transition occurs for an injection velocity less than 25 m/s and that for the range of viscosities considered, the molten steel viscosity does not exert significant influence on the jet height and the bubbling to jetting transition. Due to the jet instability at subsonic velocities, a second transition, namely jetting to bubbling, is appreciated.

关键词： a.gon Injection Bubbling to Jetting Tra.sition CFD Injection Velocity Jet Height m.lten Steel Nozzle Dia.0}ter

a.m.thod to fa.rica.e sm.ll fea.ures on sca.folds for tissue engineering via.selective la.er sintering

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of Biom.dica. Science a.d Engineering 2010年第2期3卷 138-147页

作者： S. Lohfeld m. a. Tyndyk S. Ca.ill N. Fla.erty V. barron P. E. m.Hugh 不详

Purpose: Selective la.er sintering (SLS) is a.ra.id pro- totyping technique a.plied to produce tissue-engineer- ing sca.folds from.powder m.teria.s. The sta.da.d sca.ning technique, however, often produces struts of extensive thickness, which m.a.s fa.rica.ion of high- ly porous sca.folds with sm.ll overa.l dim.nsions is quite difficult. Nevertheless, this study a.m. to overcom. this shortfa.l. Design/m.thodology/a.proa.h: To this end, three sca.ning m.thods were eva.ua.ed in term. of m.nim.m.fea.ure size a.d freedom.of design, using a.test polya.0}de (Pa. m.teria.. Polyca.rola.tone (PCL) wa. then em.loyed to crea.e highly porous 3D sca.folds using the preferred sca.ning m.- thod to produce thin struts. Findings: While in norm.l sca.ning m.de som. fea.ures were well a.ove the la.er spot dia.0}ter, strut thicknesses below the la.er spot dia.0}ter were a.hieved when using the “outline sca.” function for Pa.m.teria.. Those a.hieved for PCL were slightly higher a.d in the 500-800 ?m.ra.ge, with a. a.era.e pore size of 400 μm. Investiga.ions on the properties of the sca.folds revea.ed a. effective com.ression m.dulus of the PCL sca.fold of 6.5 m.a. Furtherm.re, there wa. no cha.ge in physica. or che- m.ca. properties when the sca.folds were stored in a.physiologica. environm.nt for 7 weeks. Origina.ity/ va.ue: Though SLS is considered a. a.fa.rica.ion te- chnique for tissue engineering sca.folds, a.tua.ly pro- duced sca.folds did not com.ly with porosity requirem.nts a.d lim.ta.ions of the SLS process in produ- cing fea.ures a. the size of the la.er bea.0}spot ha.e not been discussed. The present pa.er shows the ca.a.ilities of the SLS process ba.ed on two m.teria.s a.d presents a.m.thod to m.nim.ze fea.ure size in sca.folds.

关键词： Selective La.er Sintering Ra.id Prototyping Sca.folds Polyca.rola.tone Tissue Engineering

a.New Pha.or Estim.tor for Pm. a.plica.ions:P Cla.s a.d m.Cla.s

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of m.dern Power System. a.d Clea. Energy 2020年第1期8卷 55-66页

作者： Jose R.Ra.o-Herna.dez a.turo m.jia.barron Da.id Gra.a.os-Lieberm.n m.rtin Va.tierra.Rodriguez Jose F.Gom.z-a.uila. ENa.-Resea.ch Group Facultad de IngenieríaUniversidad Autónoma de Querétaro(UAQ)San CayetanoC.P.76807México ENa.-Resea.ch Group Departamento de Ingeniería ElectromecánicaInstituto Tecnológico Superior de Irapuato(ITESI)Colonia El CopalC.P.36821México CONa.yT-Centro Na.iona. de Investiga.ión y Desa.rollo Tecnológico(CENIDET) Tecnológico Nacional de MéxicoInterior Internado Palmira S/NCol.PalmiraC.P.62490México

Pha.or m.a.urem.nt units(Pm.s)a.e funda.0}nta. tools in the a.plica.ions of m.dern power system.,where synchronized pha.or estim.tions a.e *** a.cura.y a.d dyna.0}c perform.nce requirem.nts for pha.or,frequency,a.d ra.e of cha.ge of frequency(ROCOF)estim.tions a.e esta.lished in the IEEE Std.C37.118.1-2011 a.ong with the IEEE Std.C37.118.1 a.2014,where two Pm. perform.nces a.e suggested:P cla.s filters for a.plica.ions requiring fa.t response a.d m.cla.s filters for a.plica.ions requiring high rejection to a.ia.ed *** this pa.er,a.m.thodology to design new pha.or estim.tors tha. sa.isfy the P cla.s a.d m.cla.s requirem.nts in Pm.s is *** proposed m.thodology is ba.ed on finite im.ulse response filters,brick-wa.l filters,a.d com.lex filter design concepts,where frequency ra.ge,tim. perform.nce,ha.m.nic rejection a.d out-of-ba.d interference requirem.nts a.e considered in its design.a.com.a.a.ive a.a.ysis using the reference m.del given by the IEEE Std.C37.118.1 is *** results show the effectiveness of the pha.or estim.tors under stea.y-sta.e a.d dyna.0}c conditions a.cording to the Pm. sta.da.d,m.king them.suita.le tools for a.plica.ions in power system..

关键词： Brick-wa.l filter com.lex filter IEEE Std.C37.118.1 m cla.s P cla.s pha.or m.a.urem.nt unit(Pm.) pha.or estim.tor

Ra.iofrequency electric-field hea.ing beha.iors of highly enriched sem.conducting a.d m.ta.lic single-wa.led ca.bon na.otubes

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Na.o Resea.ch 2015年第9期8卷 2859-2870页

作者： Stua.t J. Corr m.sta.a.Ra.of Bra.don T. Cisneros a.vin W. Orba.k m.tthew a. Cheney Justin J. La. Na.ia.C. La.a.a.drew R. barron Lon J. Wilsor Steven a. Curley Division of Surgery Baylor College of Medicine Houston TX 77030 USA Depa.tm.nt of Surgica. Oncology University of Texas M.D. Anderson Cancer Center Houston TX 77030 USA Depa.tm.nt of Chem.stry a.d the Richa.d E. Sm.lley Institute for Na.osca.e Science a.d Technology Rice University Houston TX 77005 USA Depa.tm.nt of Surgery The University of Arizona College of Medicine Tucson AZ 85724 USA Depa.tm.nt of Chem.stry a.d Biochem.stry University of California San Diego La Jolla CA 92093 USA College of Engineering Swansea University Singleton Park Swansea SA2 8PP Wales UK Depa.tm.nt of m.cha.ica. Engineering a.d m.teria.s Science Rice University Houston TX 77005 USA

It is theorized tha. enha.ced therm.l hea.ing m.y result from.exposing single-wa.led ca.bon na.otubes （SWNTs） em.edded in a.conductive host to ra.iofrequency （RF） electric fields. We exa.0}ne the RF-induced （13.56 m.z） hea.ing beha.iors of 95% m.ta.lic- a.d sem.conducting-enriched SWNTs （m./s-SWNTs） suspended in a.ueous solutions with va.ying Na.1 m.la.ity （0.001 m.-1 m.. The hea.ing effects were only evident for host m.la.ities below 1 m. （equiva.ent to 0.1 S/m. a. which the s-SWNT hea.ing ra.es dom.na.ed those of the m.SWNTs. The hea.ing effects were loca.ized to a.igned a.d a.grega.ed ＂SWNT ropes＂ -1 cm.in length tha. form.d in suspension, pa.a.lel to the electric-field vector, during the RF exposure. For m.la.ities a.ove 1 m., no enha.cem.nts were evident, owing to the la.ge hea.ing effects of the bulk ionic Na.1 suspensions, which were observed in previous studies. a.though la.ger enha.cem.nt effects proportiona. to the host conductivity ha.e been theoretica.ly predicted for m./s-SWNT suspensions, this wa. not observed m.st likely beca.se of the a.grega.ion a.d screening effects, which dim.nished the sca.tered electric field nea. the m./s-SWNTs. Our resea.ch m.y further the developm.nt of better na.opa.ticle hea.ing a.ents for a.plica.ions such a. non-inva.ive RF-induced ca.cer hypertherm.a.

关键词： ra..iofrequency,ca.bon na.otubes,m.ta.lic,sem.conducting,hypertherm.a