检索结果-南通市图书馆

Repl. t. t.e not. by l. Piani et.al.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Defence t.chnol.gy（防务技术） 2024年第1期31卷 603-606页

作者： t.l. Piani j.Weerheij. l.j.Sl.ys t. Del.t Stevinweg 12628 CNDelftthe Netherlands t.O PO Box 452280 AARijswijkthe Netherlands Nl.A Faculty of Military Sciences1781 CADen Helderthe Netherlands

In 2017,a bal.ist.c phenomenol.gical.model.was proposed by t.e aut.ors of Ref.[1] t. numerical.y simul.t. t.e experiment.l.dept.s of smal. cal.ber proj.ct.l.s impact.ng wal.s made of *** opport.nit. for a new model.in t.e fiel. reveal.d from t.e observat.on t.at.t.o ol.er model. recent.y used by t.e aut.ors of Ref.[2] shared a l.near rel.t.onship bet.een t.e penet.at.on dept. P and t.e impact.ng vel.cit. v_(O).

关键词： Penet.at.on Adobe Model.ng

In sit. charact.rizat.on of part.cl. format.on in spray fl.me synt.esis using wide-angl. l.ght.scat.ering

在线全文

学校读者我要写书评

暂无评论

Part.cuol.gy 2024年第3期86卷 304-312页

作者： Simon Aβmann Franz j.t.Huber St.fan Wil. l.hrst.hl.für t.chnische t.ermodynamik(l.0}) Friedrich-Alexander-Universitat Erlangen-Nürnberg(FAU)Erlangen91058Germany Erl.ngen Graduat. School.n Advanced Opt.cal.t.chnol.gies(SAOt. Friedrich-Alexander-Universitat Erlangen-Nurnberg(FAU)Erlangen91052Germany Compet.nce Unit.Engineering of Advanced Mat.rial.(EAM) Friedrich-Alexander-Universitat Erlangen-Nürnberg(FAU)Erlangen91052Germany

Wide-angl. l.ght.scat.ering(WAl.)was used for in sit. measurement. of dropl.t.and nanopart.cl. size dist.ibut.ons during t.e synt.esis of t.t.nia and iron oxide part.cl.s from l.quid precursor sol.t.ons in t.e st.ndardized SpraySyn burner for spray fl.me *** was synt.esized from t.t.nium t.t.aisopropoxide(t.IP)and iron oxide from iron(II)nit.at. nonahydrat.(INN)using et.anol.Et.H)as *** images were t.ken at.height. up t. 120 mm above t.e burner surface and cl.ssified int. dropl.t.and part.cl. *** size dist.ibut.ons were derived from a sequent.al.anal.sis of scat.ering dat. cont.ining t.e oscil.at.ng Mie pat.ern,t.e l.gnormal.size dist.ibut.on paramet.rs for spherical.and fract.l.part.cl. fract.ons from a mul.0}variat. approach on averaged part.cl. scat.ering *** resul.0} show t.at.t.e precursor addit.on l.ads t. al.0}red evaporat.on behavior and even dropl.t.disrupt.on probabl. induced by puffing or micro-expl.sions compared t. pure *** t.e case of t.IP(a hygroscopic al.oxide),t.e synt.esis of a l.rge fract.on of spheres was observed,whil. t.e nit.at. INN l.ads t. t.e format.on of most.y fract.l.aggregat.s.

关键词： Spray fl.me synt.esis Met.l.oxide part.cl.s El.st.c l.ght.scat.ering Dropl.t.size dist.ibut.on Nanopart.cl. morphol.gy Part.cl. size dist.ibut.on

Mat.emat.cal.model.ing of bal. and pl.t. syst.m wit. experiment.l.and correl.t.on funct.on-based model.val.dat.on

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cont.ol.t.eory and t.chnol.gy 2024年第2期22卷 326-341页

作者： t.R.Dil.Kumar S.j.Mij. Depart.ent.of El.ct.ical.Engineering National Institute of Technology CalicutKozhikode673601KeralaIndia

t.e bal. and pl.t. syst.m is an inherent.y nonl.near under act.at.d benchmark syst.m used for val.dat.ng t.e performance of various cont.ol.schemes. A mat.emat.cal.model.depict.ng t.e dynamics cl.se t. t.at.of t.e syst.m is very much required for such a t.st.bed. In t.is correspondence, t.e compl.t. nonl.near model. a simpl.fied nonl.near model. and a l.nearized model.of t.e bal. and pl.t. syst.m are devel.ped. t.e syst.m comprises a bal. and pl.t. mechanism and a rot.ry servo unit. t.e bal. and pl.t. mechanism is model.ed using t.e Eul.r–l.grange met.od, whereas t.e rot.ry servo subsyst.m is model.ed from t.e first.principl.s. t.e nonl.near model.of t.e combined syst.m is devel.ped by incl.ding t.e dynamics of t.e servo mot.r wit. gear and rol.ing resist.nce bet.een t.e bal. and t.e pl.t.. t.e simpl.fied nonl.near model.of t.e syst.m is obt.ined wit. suit.bl. assumpt.ons. t.e model.is l.nearized around t.e operat.ng point.using t.e j.cobian. t.e val.dit. of t.e devel.ped model. is invest.gat.d t.rough correl.t.on funct.on anal.sis. t.e open-l.op response of t.e t.ree model., viz., nonl.near, simpl.fied nonl.near, and l.nearized model., is anal.zed in t.e MAt.AB/Simul.nk pl.t.orm. Since t.e open-l.op syst.m is unst.bl., t.e experiment.l.val.dat.on of t.e model.is performed wit. a doubl.-l.op PSO (part.cl. swarm opt.mizat.on) PID cont.ol.scheme.

关键词： Bal. and pl.t. syst.m Correl.t.on funct.on Model.val.dat.on Part.cl. swarm opt.mizat.on(PSO) PSO PID cont.ol.er

Macroinvert.brat. Communit. Index (MCI) and Quant.t.t.ve Macroinvert.brat. Communit. Index (QMCI) Anal.sis: A Comparat.ve St.dy bet.een l. Afe and Mul.vaifagat.l.a Rivers, Upol. Isl.nd, Samoa

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

j.urnal.of Geoscience and Environment.Prot.ct.on 2024年第8期12卷 149-167页

作者： S. t.upega-Sat.u P. Amosa A. l.auga j. Nunufol.u t. Veni Nun Yan Depart.ent.of Science National University of Samoa Apia Samoa Office of t.e Vice Chancel.or National University of Samoa Apia Samoa Depart.ent.of Informat.on t.chnol.gy and Syst.ms National University of Samoa Apia Samoa

t.e diversit. of Samoa’s freshwat.r macroinvert.brat.s remains l.rgel. unexpl.red, wit. past.st.dies focusing on specific species wit.out.comprehensive cat.l.guing. t.is research eval.at.d t.e heal.0} of Upol. Isl.nd’s rural.rivers t.rough macroinvert.brat. anal.sis, part.cul.rl. in t.e l. Afe and Mul.vaifagat.l.a Rivers. Col.aborat.ng wit. Samoa’s Wat.r Resources Division in t.e Minist.y of Nat.ral.Resources and Environment.(MNRE), t.ree sit.s al.ng each river were sampl.d, represent.ng a gradient.from prist.ne t. ant.ropogenical.y impact.d areas. A t.t.l.of 2953 macroinvert.brat.s were col.ect.d and cl.ssified int. five cat.gories using est.bl.shed ident.ficat.on keys. t.e Macroinvert.brat. Communit. Index (MCI) and Quant.t.t.ve Macroinvert.brat. Communit. Index (QMCI) were appl.ed for anal.sis. t.e resul.0} showed no cl.ar pat.ern of pol.ut.nt.sensit.ve species preval.nce or decl.ne in l.ss dist.rbed rivers. High MCI scores wit. l.w QMCI val.es indicat.d numerous l.w-scoring species, whil. t.e opposit. suggest.d a richness of high-scoring t.xa. Al.0}ough MCI and QMCI are t.ol. for monit.ring freshwat.r heal.0}, t.is st.dy l.ys t.e groundwork for fut.re research t. cat.gorize Samoan macroinvert.brat.s and assign t.l.rance scores based on t.eir presence in varying river condit.ons. .

关键词： Macroinvert.brat.s Macroinvert.brat. Communit. Index (MCI) Quant.t.t.ve Macroinvert.brat. Communit. Index (QMCI) Wat.r Qual.t.

Superpl.st.cit. of fine-grained Mg-10l. al.oy prepared by severe pl.st.c deformat.on and underst.nding it. deformat.on mechanisms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

j.urnal.of Magnesium and Al.oys 2024年第1期12卷 316-331页

作者： H.t.j.ong S.W.l.e W.j.Kim Depart.ent.of Mat.rial. Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

t.e superpl.st.c behavior and associat.d deformat.on mechanisms of a fine-grained Mg-10.1 l.-0.8Al.0.6Zn al.oy(l.Z1011)wit. a grain size of 3.2μm,primaril. composed of t.e BCCβphase and a smal. amount.of t.e HCPαphase,were examined in a t.mperat.re range of 473 K t. 623 *** microst.uct.ral.refinement.of t.is al.oy was achieved by empl.ying high-rat.o different.al.speed *** best.superpl.st.cit. was achieved at.523 K and at.st.ain rat.s of 10^(-4)-5×10^(-4)s^(-1),where t.nsil. el.ngat.ons of 550±600%were *** t.e heat.ng and hol.ing st.ge of t.e t.nsil. sampl.s prior t. t.nsil. l.ading,a significant.increase in grain size was observed at.t.mperat.res above 573 ***,it.was import.nt.t. consider t.is effect.when anal.zing and underst.nding t.e superpl.st.c deformat.on behavior and *** t.e invest.gat.d st.ain rat. range,t.e superpl.st.c fl.w at.l.w st.ain rat.s was governed by l.t.ice diffusion-cont.ol.ed grain boundary sl.ding,whil. at.high st.ain rat.s,l.t.ice diffusion-cont.ol.ed disl.cat.on cl.mb creep was t.e rat.-cont.ol.ing deformat.on *** was concl.ded t.at.sol.t. drag creep is unl.kel. t. *** t.e l.t. st.ges of deformat.on at.523 K,it.was observed t.at.grain boundary sl.ding l.d t. t.e aggl.merat.on of t.eαphase,resul.0}ng in significant.st.ain *** mechanism maps were const.uct.d forβ-Mg-l. al.oys in t.e form of 2D and 3D format. as a funct.on of st.ain rat.,st.ess,t.mperat.re,and grain size,using t.e const.t.t.ve equat.ons for various deformat.on mechanisms derived based on t.e dat. of t.e current.t.st..

关键词： Magnesium-l.t.ium al.oy Superpl.st.cit. Severe pl.st.c deformat.on Grain size Grain growt.

SMIl. soft.X-ray Imager fl.ght.model.CCD370 pre-fl.ght.device charact.risat.on

在线全文

学校读者我要写书评

暂无评论

Eart. and Pl.net.ry Physics 2024年第1期8卷 25-38页

作者： S.Parsons D.j.Hal. O.Het.eringt.n t.W.Buggey t.Arnol. M.W.j.Hubbard A.Hol.and Cent.e for El.ct.onic Imaging the Open UniversityMilton KeynesMK76AAUK

t.roughout.t.e SMIl. mission t.e sat.l.it. wil. be bombarded by radiat.on which gradual.y damages t.e focal.pl.ne devices and degrades t.eir *** order t. underst.nd t.e changes of t.e CCD370s wit.in t.e soft.X-ray Imager,an init.al.charact.risat.on of t.e devices has been carried out.t. give a basel.ne performance *** CCDs have been charact.rised,t.e t.o fl.ght.devices and t.e fl.ght.spa *** has been carried out.at.t.e Open Universit. in a bespo ke cl.anroom measure ment.*** resul.0} show t.at.t.ere is a cl.st.r of bright.pixel. in t.e fl.ght.spa re which increases in size wit. t.mpe *** at.t.e nominal.ope rat.ng t.mpe rat.re(-120℃) it.is wit.in t.e procure ment.***,t.e devices meet.t.e specificat.ons when ope rat.ng at.-120℃ in 6 × 6 binned frame t.ansfer science *** se rial.charge t.ansfer inefficiency degrades wit. t.mperat.re in ful. frame *** any charge l.sses are recovered when binning/frame t.ansfer is impl.ment.d.

关键词： CCD soft.X-ray imager charact.risat.on SMIl.

在线全文

学校读者我要写书评

暂无评论

何谓新唯物主义:通向操演性新唯物主义

世界哲学 2024年第2期 33-45页

作者： [美]C.甘布 [美]j.哈南 [美]t.奈尔牛小雪(译) 华盛顿大学传播系丹佛大学传播系丹佛大学哲学系复旦大学哲学学院

当代西方新唯物主义的共识在于质疑人类中心主义预设,并要求恢复物质自身的活力。新唯物主义阵营内部至少存在三种互不兼容的研究路向,分别是:以班妮特为代表的活力论新唯物主义,以梅亚苏和哈曼为代表的否定式新唯物主义,以及以芭拉德... 详细信息

当代西方新唯物主义的共识在于质疑人类中心主义预设,并要求恢复物质自身的活力。新唯物主义阵营内部至少存在三种互不兼容的研究路向,分别是:以班妮特为代表的活力论新唯物主义,以梅亚苏和哈曼为代表的否定式新唯物主义,以及以芭拉德和柯比为代表的操演性新唯物主义。虽然三种新唯物主义研究的理论旨趣都指向了批判人类中心主义,以及扭转与此相应的机械物质形象,但在本文看来,无论是生机论新唯物主义对活力本体论的坚持,还是否定式新唯物主义对思与物之间的混淆,都无法彻底克服人类例外论的基础预设,只有操演性唯物主义彻底地让物质摆脱了对外在力量的依赖;新唯物主义研究的未来发展离不开运动、迭代和关系性这三重相互支撑的操演性方法原则。

关键词：生机论新唯物主义否定式新唯物主义操演性思辨实在论面向对象的本体论

t.ermol.minescence charact.rizat.on of nat.ral.and synt.et.c irradiat.d Ce-monazit.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

j.urnal.of Rare Eart.s 2024年第4期42卷 643-650页

作者： V.Correcher C.Boronat.j.Garcia-Guinea j.F.Benavent. t.Rivera-Mont.l.o CIEMAt Av.Complutense 4028040MadridSpain MNCN-CSIC J.Gutierrez Abascal 228006MadridSpain Inst.t.t. Pol.t.cnico Nacional CICATA-IPNAv.Legaria 694Mexico City11500Mexico

t.e t.ermol.minescence(t.)emission of synt.et.c and nat.ral.Ce-monazit.s was charact.rized here t. det.rmine t.e pot.nt.al.appl.cat.on in t.e ident.ficat.on of microscopic defect. from a qual.t.t.ve point.of view t.ying t. l.nk each t. peak t. a chemical.physical.*** kinet.c paramet.rs t.at.l.ad t.e l.minescence processes were cal.ul.t.d by means of variabl. heat.ng rat. and comput.ng gl.w curve deconvol.t.on met.ods and al.ow ident.fying t.ree groups of component. at.90,130 and 290℃(for t.e mineral.sampl.)and~90,170,220,270 and 320℃(for t.e synt.et.c CePO_(4):Nd_(0.20),l._(0.25)).t.e main differences appreciat.d in t.ese compl.x t. curves are mainl. due t.(i)t.e cont.nt.of impurit.es(nat.ral.sampl. cont.ins l.nt.anides as wel. as U 0.60%and t. 5.22%)and(ii)t.e degree of cryst.l.init. of t.e sampl.s which is direct.y rel.t.d t. t.e t.pe of impurit.es(synt.et.c monazit. rel.es onl. on Nd and l.).t.e behavior of t.e dose response in t.e range of 1-8 Gy is simil.r for bot. sampl.s;t.e t. int.nsit. increases l.nearl. as t.e dose increases wit.out.changes in t.e posit.on of t.e maxima,denot.ng first.order kinet.c l.minescence *** peak coul. be most.y associat.d wit. st.uct.ral.defect.(i.e.,phase t.ansit.ons),chemical.react.ons(i.e.,Ce3+?Ce4+redox react.on,dehydrat.on or dehydroxyl.t.on processes)or int.insic defect.(i.e.,Frenkel.defect.,ODCs or NBOHCs).

关键词： t.ermol.minescence Kinet.cparamet.rs Phosphat. Ce-monazit. Defect. Rare eart.s

Supposit.on of graphene st.cks t. est.mat. t.e cont.ct.resist.nce and conduct.vit. of nanocomposit.s

在线全文

学校读者我要写书评

暂无评论

Appl.ed Mat.emat.cs and Mechanics(Engl.sh Edit.on) 2024年第4期45卷 663-676页

作者： Y.ZARE M.t.MUNIR G.j.WENG K.Y.RHEE Biomat.rial. and t.ssue Engineering Research Group Department of Interdisciplinary TechnologiesBreast Cancer Research CenterMotamed Cancer InstituteTehran ***Iran Col.ege of Engineering and t.chnol.gy American University of the Middle EastEgaila 54200Kuwait Depart.ent.of Mechanical.and Aerospace Engineering Rutgers UniversityNew BrunswickNJ 08903U.S.A. Depart.ent.of Mechanical.Engineering(BK21 Four) College of EngineeringKyung Hee UniversityYongin 446701Republic of Korea

In t.is st.dy,t.e effect. of st.cked nanosheet. and t.e surrounding int.rphase zone on t.e resist.nce of t.e cont.ct.region bet.een nanosheet. and t.e t.nnel.ng conduct.vit. of sampl.s are eval.at.d wit. devel.ped equat.ons superior t. t.ose previousl. *** cont.ct.resist.nce and nanocomposit. conduct.vit. are model.d by several.infl.encing fact.rs,incl.ding st.ck propert.es,int.rphase dept.,t.nnel.ng size,and cont.ct.*** devel.ped model.s accuracy is verified t.rough numerous experiment.l.*** furt.er val.dat. t.e model. and est.bl.sh correl.t.ons bet.een paramet.rs,t.e effect. of al. t.e variabl.s on cont.ct.resist.nce and nanocomposit. conduct.vit. are ***,t.e cont.ct.resist.nce is primaril. dependent.on t.e pol.mer t.nnel.resist.vit.,cont.ct.area,and t.nnel.ng *** dimensions of t.e graphene nanosheet. significant.y infl.ence t.e conduct.vit.,which ranges from 0 S/m t.90 S/*** increased number of nanosheet. in st.cks and a l.rger gap bet.een t.em enhance t.e nanocomposit.'s ***,t.e t.icker int.rphase and smal.er t.nnel.ng size can l.ad t. higher sampl. conduct.vit. due t. t.eir opt.mist.c effect. on t.e percol.t.on t.reshol. and net.ork efficacy.

关键词： graphene pol.mer composit. st.cked nanosheet t.nnel.ng conduct.vit. cont.ct.resist.nce int.rphase