检索结果-南通市图书馆

Experiment.l Invest.gat.on of t.ermal Performance of Novel Finned Radiat.rs for Aut.mot.ve Cooling Syst.m

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of t.ermal Science 2024年第5期33卷 1726-1743页

作者： SINGH Hardeep t.NG David S-K READER graham ESHt.AGHI Nicky ICHIYANAGI Mit.uhisa SUZUKI t.kashi t.rbulence&Energy Laborat.ry University of WindsorWindsor N9B 3P4Canada Chemical and Environment.l Engineering School of EngineeringRMIT UniversityMelbourneVictoria 3001Australia Depart.ent.of Engineering and Applied Sciences Sophia UniversityTokyo 102-8554Japan

t.is research invest.gat.s innovat.ve fin-t.pe radiat.rs for aut.mobile engine cooling ***-channel and helical radiat.rs,along w.t. st.aight.t.pe,w.re analyzed for heat.t.ansfer charact.rist.cs under various *** uniqueness of t.is st.dy is evident.in t.e design of microchannel and helical *** helical radiat.rs,t.e inner rod feat.res 4/8 helical-shaped w.t.r galleries,w.ile t.e out.r t.be frame w.t. embedded fins remains *** cont.ast.t.e microchannel radiat.rs have compact.t.apezoidal-shaped w.t.r galleries w.t. separat. fin ***,t.e novelt. of t.e research is enhanced by t.e ut.lizat.on of 3D print.ng t.chnology in t.e manufact.ring *** const.nt.fin height.analysis at.varied w.t.r and air flow.rat.,Microchannel w.t.r Air Radiat.r w.t. fin height.10.5 mm(MCw.R10.5)depict.d a higher heat.t.ansfer rat. amongst.t.e *** comparison t. St.aight.w.t.r Air Radiat.r w.t. fin height.9.5 mm(Sw.R9.5),t.e heat.t.ansfer rat. is 30.3%and 1.3 t.mes ***,in const.nt.fin surface area analysis,microchannel radiat.r(MCw.R3.2)illust.at.s low.r heat.dissipat.on t.an Helical radiat.r(Hw.R138)but.higher t.an Hw.R134 and St.aight.radiat.r(Sw.R6).t.e examinat.on of pumping loss indicat.d t.at.t.e Micro-channel radiat.r out.erformed helical radiat.rs due t. it. low.r pressure *** average pressure loss for Micro-channel radiat.rs w.s 0.74 kPa,making it.1.2 t.mes higher t.an t.at.of a st.aight.radiat.r(0.62 kPa),indicat.ng a bet.er t.ade-off.

关键词： heat.exchangers mult.-channel helical heat.exchanger heat.t.ansfer 3D print.ng

A simple modificat.on t. t.e classical SIR model t. est.mat. t.e proport.on of under-report.d infect.ons using case st.dies in flu and COVID-19

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

Infect.ous Disease Modelling 2024年第4期9卷 1147-1162页

作者： Leonid Kalachev Jon graham Erin L.Landgut. Mat.emat.cal Sciences University of MontanaMissoulaUSA Cent.r for Populat.on Healt. Research School of Public and Community Health SciencesUniversity of MontanaMissoulaUSA

Background:Under-report.ng and,t.us,uncert.int. around t.e t.ue incidence of healt. event. is common in all public healt. report.ng *** t.e problem of underreport.ng is acknow.edged in epidemiology,t.e guidance and met.ods available for assessing and correct.ng t.e result.ng bias are ***:w. aim t. design a simple modificat.on t. t.e Suscept.ble e Infect.d e Removed(SIR)model for est.mat.ng t.e fract.on or proport.on of report.d infect.on ***:t.e suggest.d modificat.on involves rescaling of t.e classical SIR model producing it. mat.emat.cally equivalent.version w.t. explicit.dependence on t.e report.ng paramet.r(t.ue proport.on of cases report.d).w. just.fy t.e rescaling using t.e phase plane analysis of t.e SIR model syst.m and show.how.t.is rescaling paramet.r can be est.mat.d from t.e dat. along w.t. t.e ot.er model ***:w. demonst.at. how.t.e proposed met.od is cross-validat.d using simulat.d dat. w.t. know. disease cases and t.en apply it.t. t.o empirical report.d dat. set. t. est.mat. t.e fract.on of report.d cases in Missoula Count.,Mont.na,USA,using:(1)flu dat. for 2016e2017 and(2)COVID-19 dat. for fall of ***:w. est.blish w.t. t.e simulat.d and COVID-19 dat. t.at.w.en most.of t.e disease cases are presumed report.d,t.e value of t.e addit.onal report.ng paramet.r in t.e modified SIR model is close or equal t. one,so t.at.t.e original SIR model is appropriat. for dat. ***,t.e flu example show. t.at.w.en t.e report.ng paramet.r is close t. zero,t.e original SIR model is not.accurat.ly est.mat.ng t.e usual rat. paramet.rs,and t.e re-scaled SIR model should be *** research demonst.at.s t.e role of under-report.ng of disease dat. and t.e import.nce of account.ng for underreport.ng w.en modeling simulat.d,endemic,and pandemic disease *** report.ng t.e“t.ue”number of disease cases w.ll have dow.st.eam impact. on predict.ons of disease dynamics.A simple paramet.r adjust.ent

关键词： Modeling of epidemics SIR t.pe models flu and COVID-19 Under-report.ng paramet.r Proport.on of report.d disease cases

Machine learning modeling for fuel cell-bat.ery hybrid pow.r syst.m dynamics in a t.yot. Mirai 2 vehicle under various drive cycles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy and AI 2024年第3期17卷 406-418页

作者： Adit.ya Legala Mat.hew.Kubesh Venkat. Rajesh Chundru graham Conw.y Xianguo Li Sout.w.st.Research Inst.t.t. San AntonioTXUSA Depart.ent.of Mechanical and Mechat.onics Engineering University of WaterlooWaterlooOntarioCanada

Elect.ificat.on is considered essent.al for t.e decarbonizat.on of mobilit. sect.r, and underst.nding and modeling t.e complex behavior of modern fuel cell-bat.ery elect.ic-elect.ic hybrid pow.r syst.ms is challenging, especially for product.development.and diagnost.cs requiring quick t.rnaround and fast.comput.t.on. In t.is st.dy, a novel modeling approach is developed, ut.lizing supervised machine learning algorit.ms, t. replicat. t.e dynamic charact.rist.cs of t.e fuel cell-bat.ery hybrid pow.r syst.m in a 2021 t.yot. Mirai 2nd generat.on (Mirai 2) vehicle under various drive cycles. t.e ent.re dat. for t.is st.dy is collect.d by inst.ument.ng t.e Mirai vehicle w.t. in-house dat. acquisit.on devices and t.pping int. t.e Mirai cont.oller area net.ork bus during chassis dynamomet.r t.st.. A mult.-input.- mult.-out.ut. feed-forw.rd art.ficial neural net.ork archit.ct.re is designed t. predict.not.only t.e fuel cell at.ribut.s, such as average minimum cell volt.ge, coolant.and cat.ode air out.et.t.mperat.res, but.also t.e bat.ery hybrid syst.m at.ribut.s, including lit.ium-ion bat.ery pack volt.ge and t.mperat.re w.t. t.e help of 15 syst.m operat.ng paramet.rs. Over 21,0000 dat. point. on various drive cycles having combinat.ons of t.ansient.and near st.ady-st.t. driving condit.ons are collect.d, out.of w.ich around 15,000 point. are used for t.aining t.e net.ork and 6,000 for t.e evaluat.on of t.e model performance. Various dat. filt.at.on t.chniques and neural net.ork calibrat.on processes are explored t. condit.on t.e dat. and underst.nd t.e impact.on model performance. t.e calibrat.d neural net.ork accurat.ly predict. t.e hybrid pow.r syst.m dynamics w.t. an R-squared value great.r t.an 0.98, demonst.at.ng t.e pot.nt.al of machine learning algorit.ms for syst.m development.and diagnost.cs.

关键词： Art.ficial neural net.ork(ANN) Prot.n exchange membrane fuel cell(PEMFC) Fuel cell elect.ic vehicle(FCEV) Fuel cell-bat.ery elect.ic-elect.ic hybrid pow.r syst.m Dat. based models Lit.ium-ion bat.ery(LiB)

Adapt.t.on in brain st.uct.re and respirat.ry and olfact.ry st.uct.res across environment.l gradient. in African and Nort. American muroid rodent.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Int.grat.ve Zoology 2024年第1期19卷 165-181页

作者： Pet.r J.t.YLOR Aluw.ni NENGOVHELA Christ.ane DENYS graham R.SCOt. Cat.erine M.IVY Depart.ent.of Zoology School of Natural and Mathematical SciencesUniversity of VendaThohoyandouSouth Africa Afromont.ne Unit Department of Zoology and EntomologyUniversity of the Free StatePhuthaditjhabaSouth Africa Depart.ent.of Mammalogy National MuseumBloemfonteinSouth Africa Inst.t.t.de Syst.mat.que EvolutionBiodiversité(ISYEB)Muséum National d’Histoire NaturelleCNRSSorbonne UniversitéEPHEUniversitéDes AntillesParisFrance Depart.ent.of Biology McMaster UniversityHamiltonOntarioCanada Guglielmo and Shoemaker Labs Advanced Facility for Avian ResearchUniversity of Western OntarioLondonOntarioCanada

Morphomet.ic st.dies of 3D micro Ct.scanned images can provide insight. int. t.e evolut.on of t.e brain and sensory st.uct.res but.such dat. are st.ll scarce for t.e most.diverse mammalian order of *** review.d and new.dat.,w. t.st.d for convergence t. ext.eme aridit. and high elevat.on in t.e sensory and brain morphology of rodent.,from morphomet.ic dat. from micro-Ct.X-ray scans of 174 crania of 16 species of t.ree dist.nt.y re-lat.d African murid(soft.furred mice,Praomyini,laminat.-t.ot.ed rat.,Ot.myini,and gerbils,Gerbillinae)clades and one Nort. American cricet.d(deer mice and w.it.-foot.d mice,Peromyscus)*** st.dies demon-st.at.d convergent.evolut.on act.ng on t.e oval w.ndow.area of t.e cochlea(enlarged in ext.emely arid-adapt.d species of Ot.myini and Gerbillinae)and on endocranial volume(reduced in high elevat.on t.xa of Ot.myini and Peromyscus).How.ver,cont.ary t. our predict.ons,w. did not.ind evidence of convergence in brain st.uc-t.re t. aridit.,or in t.e olfact.ry/respirat.ry syst.m(t.rbinat. bones)t. high *** st.uct.re differed,part.cularly in t.e pet.osal lobules of t.e cerebellum and t.e olfact.ry bulbs,bet.een Ot.myini and Gerbillinae,w.t. ext.eme arid-adapt.d species in each clade being highly divergent.not.convergent.from ot.er species in t.e same *** observed great.r“packing”of t.e maxillary t.rbinat. bones,w.ich have import.nt.respirat.ry funct.ons,in Peromyscus mice from high and low.elevat.ons compared t. t.e high-elevat.on African Praomyini,but.more complex pat.erns w.t.in Peromyscus,probably relat.d t. t.ade-offs in respirat.ry physiology and heat.exchange in t.e nasal epit.elium associat.d w.t. high-elevat.on adapt.t.on.

关键词： 3D morphomet.ics Africa brain size Nort. America Rodent.a sensory evolut.on

t.e variat.on of DOM during long dist.nce w.t.r t.ansport.by t.e China Sout. t. Nort. w.t.r Diversion Scheme and impact.on drinking w.t.r t.eat.ent

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Front.ers of Environment.l Science & Engineering 2024年第5期18卷 85-100页

作者： Hankun Yang Yujuan Li Hongyu Liu Nigel J.D.graham Xue w. Jiaw.i Hou Mengjie Liu w.nyu w.ng w.nzheng Yu St.t. Key Laborat.ry of Environment.l Aquat.c Chemist.y Key Laboratory of Drinking Water Science and TechnologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China School of Environment.and Municipal Engineering Qingdao Technological UniversityQingdao266033China Colleges of Forest.y Northeast Forestry UniversityHarbin150006China Depart.ent.of Civil and Environment.l Engineering Imperial College LondonSouth Kensington CampusLondonSW7 2AZUK School of Chemist.y and Chemical Engineering Beijing Institute of TechnologyBeijing100081China St.t. Key Laborat.ry of Separat.on Membrane Processes School of Environment Science and EngineeringTiangong UniversityTianjin300387China

In t.is st.dy,samples w.re t.ken from t.ree locat.ons,upst.eam t. dow.st.eam,along t.e cent.al rout. project.of t.e China Sout. t. Nort. w.t.r Diversion(SNw.)scheme in summer and *** w.re used t. reveal t.e variat.ons of dissolved organic mat.er(DOM)during t.e w.t.r t.ansfer process,and t.e effect. of t.ese variat.ons on drinking w.t.r t.eat.ent.and disinfect.on by-product. format.on pot.nt.al(DBPs-FP).t.e result. show.d t.at.polysaccharides accumulat. in summer and reduce in w.nt.r w.t. flow.dist.nce,w.ich has an import.nt.effect.on t.e overall propert.es of DOM,as w.ll as on t.e performance of coagulat.on,ult.afilt.at.on,and t.e format.on of *** subst.nces,and t.eir hydrophilic cont.nt.also increased in summer and decreased in w.nt.r w.t. flow.*** cont.ast.t.e concent.at.on of small organic subst.nces(Mw.1000 Da)increased in bot. summer and w.nt.r w.t. flow.dist.nce,w.ich affect.d bot. nanofilt.at.on(NF)membrane fouling and *** result. provide a useful case st.dy of spat.al and t.mporal changes in raw.w.t.r DOM during long dist.nce w.t.r t.ansfer and t.eir impact.on t.e t.eat.ent.and qualit. of drinking w.t.r from t.e SNw..

关键词： Long-dist.nce w.t.r t.ansfer t.e China Sout. t. Nort. w.t.r Diversion Scheme Coagulat.on Membrane filt.at.on Disinfect.on by-product.

Efficiency of a Modular Cleanroom for Space Applicat.ons

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fluid Dynamics & Mat.rials Processing 2024年第3期20卷 547-562页

作者： Mat.hew.R.Coburn Charlie Young Chris Smit. graham Schult. Miguel Robayo Zheng-t.ng Xie Facult. of Engineering and Physical Sciences University of SouthamptonSouthamptonSO171BJUK Plast.on UK Lt.. Westcott Venture ParkWestcottHP180XBUK Renew.ble Energy Group University of ExeterExeterTR109FEUK

A prot.t.pe cleanroom for hazardous t.st.ng and handling of sat.llit.s prior t. launcher encapsulat.on,sat.sfying t.e ISO8 st.ndard has been designed and analyzed in t.rms of *** Reynolds Averaged Navier-St.kes(URANS)models have been used t. st.dy t.e relat.d flow.field and part.culat. mat.er(PM)*** out.omes of t.e URANS models have been validat.d t.rough comparison w.t. equivalent.large-eddy *** at.ent.on has been paid t. t.e locat.on and shape of t.e air int.kes and t.eir orient.t.on in space,in order t. balance t.e PM convect.on and diffusion inside t.e *** a cyclone-t.pe flow.pat.ern inside t.e cleanroom is a key t. maint.ining a high vent.lat.on efficiency.

关键词： Diffuser LES PM RANS unst.ady flow exponent.al decay