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Chebyshev polyn.mial-based Ritz method for thermal bucklin. an. free vibration.behaviors of metal foam beams

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Applied Mathematics an. Mechan.cs(En.lish Edition. 2024年第5期45卷 891-910页

作者： n.D.n.UYEn.T.n.n.UYEn Faculty of Civil En.in.erin. Ho Chi Minh City University of Technology and EducationHo Chi Minh City 71309Viet Nam Faculty of En.in.erin. an. Techn.logy Kien Giang UniversityChau Thanh 92000Viet Nam

This study presen.s the Chebyshev polyn.mials-based Ritz method to examin. the thermal bucklin. an. free vibration.characteristics of metal foam *** an.lyses in.lude three models for porosity distribution.an. two scen.rios for thermal *** material properties are assessed un.er two con.ition.,i.e.,temperature depen.en.e an. temperature *** theoretical framework for the beams is based on.the higher-order shear deformation.theory,which in.orporates shear deformation. with higher-order *** govern.n. equation. are established from the Lagran.e equation.,an. the beam displacemen. fields are approximated by the Chebyshev *** simulation. are performed to evaluate the effects of thermal load,slen.ern.ss,boun.ary con.ition.BC),an. porosity distribution.on.the bucklin. an. vibration.behaviors of metal foam *** fin.in.s highlight the sign.fican. in.luen.e of temperature-depen.en.(TD)material properties on.metal foam beams'bucklin. an. vibration.respon.es.

关键词： Ritz method Chebyshev fun.tion bucklin. vibration metal foam beam higher-order beam theory(HOBT)

Compression.properties of cost-efficien. porous expan.ed clay rein.orced AA7075 syn.actic foams fabricated by in.ustrial-orien.ed die castin. techn.logy

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Chin. Foun.ry 2024年第1期21卷 60-70页

作者： İsmail Cem Akgün.Çağın.Bolat Ali Gökşen.i Faculty of Mechan.cal En.in.erin. Istanbul Technical University34437İstanbulTurkey Faculty of En.in.erin. Samsun University55420SamsunTurkey

In.today’s man.facturin. in.ustries,hard competition.between.rival firms makes it compulsory for researchers to design.lighter an. cheaper machin. compon.n.s due to the megatren.s of cost-effectiven.ss an. *** this poin.,alumin.m syn.actic foams(ASFs)are n.w-gen.ration.en.in.erin. composites an. come in.o the upfron. as a *** to their features like low den.ity,sufficien. elon.ation.an. perfect en.rgy absorption.ability,these advan.ed foams have been.con.iderably seductive for man. in.ustrial sectors *** this study,an.in.ustrial-orien.ed automatic die castin. techn.logy was used for the first time to man.facture the combin.tion.of AA7075/porous expan.ed clay(PEC).Micro evaluation.(optical an. FESEM)reveal that there is a homogen.us particle distribution.in.the foam samples,an. in.pection. are compatible with the other ASF ***,T6 agin. heat treatmen. was operated on.on. half of the produced foams to explore the probable impact of agin. on.the compressive *** results show that PEC particles can.be an.altern.tive to expen.ive hollow spheres used in.the previous ***,a favorable relation.hip is ascertain.d between.the agin. treatmen. an. mechan.cal properties such as compression.stren.th an. plateau stren.th.

关键词： die castin. porous materials metal matrix sytan.tic foams expan.ed clay compressive deformation

Predictin. effects of tun.el throttlin. of an.ular freeway vehicular flow by a con.in.um model

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Journ.l of Traffic an. Tran.portation.En.in.erin.(En.lish Edition. 2024年第4期11卷 733-746页

作者： Zhon.min.Huan. M.n.Smirn.va n.n.Smirn.v Zuojin.Zhu Faculty of En.in.erin. Scien.e University of Science and Technology of ChinaHefei 230026China In.titute of Plasma Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Faculty of Mechan.cs an. Mathematics Lomonosov Moscow State UniversityMoscow 119992Russia

Fluid flow throttlin. is common.in.in.ustrial an. buildin. services *** tun.el throttlin. of vehicular flow is caused by the abrupt n.mber reduction.of roadway lan.,as the tun.el has a lower lan. n.mber than.in.the roadway n.rmal *** predict the effects of tun.el throttlin. of an.ular freeway vehicular flow,a three-lan. con.in.um model is ***Ⅲof the tun.el is completely blocked due to the n.ed of tun.el rehabilitation.*** exists man.atory n.t lan.-chan.in. rate from lan.Ⅲto lan.Ⅱjust upstream of the tun.el en.ran.e,which is described by a model of ran.om n.mber gen.rated through a golden.section.*** n.t-chan.in. rate between.adjacen. lan.s is modeled usin. a lan.-chan.in. time expressed explicitly in.algebraic *** paper assumes that the an.ular freeway has a total len.th of 100 km,a two-lan. tun.el of len.th 2 km with a speed limit of 80 km/*** free flow speeds on.lan.sⅠ,Ⅱan.Ⅲare assumed to be 110,100 an. 90 km/h *** on.the three-lan. con.in.um model,n.merical simulation. of vehicular flows on.the an.ular freeway with such a tun.el are con.ucted with a reliable n.merical method of 3rd-order *** results reveal that the vehicular flow has a smaller threshold of traffic jam formation.in.comparison.with the case without tun.el *** fuel con.umption.can.be estimated by in.erpolation.with time averaged grid traffic speed an. an.assumed curve of vehicle *** vehicle fuel con.umption.is lan. n.mber depen.en.,distributes with in.tial den.ity con.avely,ran.in. from 5.56 to 8.00 *** throttlin. leads to an.earlier traffic jam formation.in.comparison.with the case without tun.el throttlin..

关键词： Effects of tun.el throttlin. Vehicle fuel con.umption Travel time Threshold of traffic jam formation Con.in.um model

Towards defin.n. soil quality of Mediterran.an.calcareous agricultural soils:Referen.e values an. poten.ial core in.icator set

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In.ern.tion.l Soil an. Water Con.ervation.Research 2024年第1期12卷 145-155页

作者： Germán.A.Durán.Dan.el Sacristán.Edelweis Farrús Jaume Vadell In.titut de Recerca i FormacióAgrària i Pesquera de les Illes Balears C/Eusebi Estada14507009PalmaSpain Plan. Biology Departmen. University of Valencia46100BurjassotValenciaSpain Soil an. En.iron.en.al Quality Departmen. Centro de Investigaciones sobre Desertificación-CIDE(CSIC-Universitat de València-Generalitat Valenciana)Carretera Moncada-Náquera km 4.546113MoncadaValenciaSpain Un.versitat de les Illes Balears Cra.De Valldemossakm 7507122PalmaSpain

To avoid soil degradation.adapt to climate chan.e an. comply with the Sustain.ble Developmen. goals 2030(Un.Gen.ral Assembly),establishin. the quality/fertility of the agricultural soils of the Mediterran.an.region.an. evaluate how these evolve with time is *** en.bles adequate man.gemen. practices to be *** Mediterran.an.calcareous region.has received little atten.ion.in.this sen.e,in.spite its soil ***,24 differen. represen.ative calcareous agricultural soils of the Mediterran.an.region.in.ludin. the main.man.gemen. strategies of agricultural soils(rain.ed an. irrigated),were sampled from the islan. of Mallorca;an. their physical,chemical an. biological properties *** values obtain.d for most of the soil characteristics allowed to establish an.in.tial approach to the referen.e values for the type of calcareous agricultural soils con.idered,an. to clearly distin.uish the effect of rain.ed or irrigation.man.gemen. practices on.soils properties an. *** en.yme activities were n.t stimulated by the irrigation.con.ition. assayed or they were on.y in.dry con.ition.,suggestin. optimum en.yme activities could be obtain.d when.altern.tin. dry an. humid soil *** organ.c carbon.calcium carbon.te an. active lime revealed of sign.fican. importan.e in.the collection.of ***,the results obtain.d clearly in.icate the heterogen.ity of the region.an. its implication. on.the differen. soil ***,this study could serve as a startin. poin. to adequately establish the quality(fertility)for Mediterran.an.calcareous agricultural soils an. their referen.e values by con.uctin. further research in.this region.an. in.ludin. more type of soils.

关键词： Soil fertility Mediterran.an.agricultural soils Calcareous soils Soil en.ymes Soil man.gemen.

Characterization.of early maturin. elite gen.types based on.MTSI an. MGIDI in.exes:an.illustration.in.uplan. cotton.Gossypium hirsutum L.)

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Journ.l of Cotton.Research 2024年第3期7卷 253-265页

作者： D S RAJ Supritha PATIL Rajesh S. PATIL Bhuvan.shwara R. n.YAK Spurthi n. PAWAR Kasu n. Departmen. of Gen.tics an. Plan. Breedin. College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Agricultural Research Station Dharwad 580005India Departmen. of Biotechn.logy College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Departmen. of Crop Physiology College of AgricultureUniversity of Agricultural SciencesDharwad 580005India

Backgroun. Globally,the cultivation.of cotton.is con.train.d by its ten.en.y for exten.ed periods of *** maturity plays a poten.ial role in.rain.ed-based multiple croppin. system especially in.the curren. era of climate *** the curren. study,a set of 20 diverse Gossypium hirsutum gen.types were evaluated in.two crop season. with three plan.in. den.ities an. assessed for 11 morphological traits related to early *** study aimed to iden.ify gen.type(s)that mature rapidly an. accomplish well un.er diverse en.iron.en.al con.ition. based on.the two robust multivariate techn.ques called multi-trait stability in.ex(MTSI)an. multi-trait gen.type-ideotype distan.e in.ex(MGIDI).Results MTSI an.lysis revealed that out of the 20 gen.types,three gen.types,viz.,n.DC-30,A-2,an. S-32 accomplished well in.terms of early maturity traits in.two ***,three gen.types were selected usin. MGIDI method for each plan.in. den.ities with a selection.in.en.ity of 15%.The stren.ths an. weakn.sses of the gen.types selected based on.MGIDI method highlighted that the breeders could focus on.developin. early-maturin. gen.types with specific traits such as days to first flower an. boll *** selected gen.types exhibited positive gen.tic gain. for traits related to earlin.ss an. a successful harvest durin. the first an. secon. ***,there were n.gative gain. for traits related to flowerin. an. boll *** The study iden.ified three gen.types exhibitin. early maturity an. accomplished well un.er differen. plan.in. *** multivariate methods(MTSI an. MGIDI)serve as n.vel approaches for selectin. desired gen.types in.plan. breedin. programs,especially across various growin. *** methods offer exclusive ben.fits an. can.easily con.true an. min.mize multicollin.arity issues.

关键词： Cotton MTSI MGIDI Gen.type en.iron.en. in.eraction Early maturity Multi-trait Multi-en.iron.en.

Weather in.luen.ed n.stlin. growth of an.in.ectivorous but n.t a gran.vorous grasslan. passerin. in.Argen.in.

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Avian.Research 2024年第2期15卷 156-162页

作者： Martín.Alejan.ro Colombo Adrian.Jauregui Lucian. n.Segura Laboratorio de Ecología de Aves.In.titute“Dr.Raúl A.Rin.uelet”(ILPLA)-Un.P/COn.CET Boulevard 1201437La PlataB1900Buenos AiresArgentina

n.stlin. growth of birds can.be affected by weather *** gen.ral,it is expected that higher temper-atures favor growth by improvin. food availability an. n.stlin. metabolism,while rain.hin.ers it by reducin. foragin. ***,most of these pattern. have been.described in.in.ectivorous cavity-n.stin. birds in.temperate *** tested these prediction. in.two n.otropical grasslan. groun.-n.stin. birds with con.rastin. n.stlin. diets an. therefore poten.ially differen. respon.es to *** measured n.stlin.s of the Hellmayr’s Pipit(An.hus hellmayri,an.in.ectivorous passerin.)an. the Grasslan. Yellow-Fin.h(Sicalis luteola,which feeds its n.stlin.s exclusively with seeds)durin. three breedin. season.(2017-2020)in.cen.ral-eastern.*** took measuremen.s of tarsus an. body mass,modeled growth curves usin. n.n.in.ar mixed-effects models,an. evaluated the effects of min.mum daily temperature an. precipitation.durin. the growth period an. the 30 days prior to *** pipits(60 n.stlin.s from 21 n.sts),min.mum temperatures durin. the growth period were positively associated with tarsus an. body mass ***,there was a positive association.between.precipitation.durin. the pre-hatchin. period an. tarsus ***,n.n. of the weather variables an.lyzed had sign.fican. effects on.n.stlin. growth of fin.hes(131 n.stlin.s from 35 n.sts).Dietary con.rast between.species may explain.the differen. *** activity an. abun.an.e can.be affected by weather variation. within.the span.of a breedin. season.whereas seeds may depen. on.con.ition. from previous years,makin. the effects harder to *** with reduced asymptotic size can.have reduced chan.es of ***,pipit population. could be impacted if they experien.e cold an. dry con.ition. durin. their breedin. season.which is of major relevan.e in.the curren. con.ext of climate chan.e.

关键词： Fin.hes Grasslan. birds n.otropical birds Pipits Precipitation Temperature

In.lusion.of CoTiO_(3) to ameliorate the re/dehydrogen.tion.properties of the Mg–n.–Al system

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Journ.l of Magn.sium an. Alloys 2024年第3期12卷 1215-1226页

作者： n.A.Ali n.Y.Yusn.zam n.A.Sazelee Sami-ullah Rather Haizhen.Liu M.Ismail En.rgy Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Departmen. of Chemical an. Materials En.in.erin. King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guan.xi n.vel Battery Materials Research Cen.er of En.in.erin. Techn.logy School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials an. Life-Cycle Safety for Composite Structures Nanning 530004China

For the first time,the MgH_(2)–n.AlH_(4)(ratio 4:1)destabilized system with CoTiO_(3) addition.has been.*** CoTiO_(3)-doped MgH_(2)–n.AlH_(4) sample begin. to dehydrogen.te at 130℃,which is declin.d by 40℃ compared to the un.oped MgH_(2)–n.AlH_(4).Moreover,the de/rehydrogen.tion.kin.tics characteristics of the CoTiO_(3)-doped MgH_(2)–n.AlH_(4) were greatly *** the in.lusion.of CoTiO_(3),the MgH_(2)–n.AlH_(4) composite absorbed 5.2 wt.%H_(2),higher than.un.oped MgH_(2)–n.AlH_(4).In.the con.ext of dehydrogen.tion.the CoTiO_(3)-doped MgH_(2)–n.AlH_(4) sample desorbed 2.6 wt.%H_(2),almost doubled compared to the amoun. of hydrogen.desorbed from the un.oped MgH_(2)–n.AlH_(4) *** activation.en.rgy obtain.d by the Kissin.er an.lysis for MgH_(2) decomposition.was sign.fican.ly lower by 35.9 kJ/mol than.the un.oped MgH_(2)–n.AlH_(4) *** reaction.mechan.sm demon.trated that n.w phases of MgCo an. AlTi_(3) were gen.rated in.situ durin. the heatin. process an. are likely to play a substan.ial catalytic fun.tion.an. be useful in.amelioratin. the de/rehydrogen.tion.properties of the destabilized MgH_(2)–n.AlH_(4) system with the in.lusion.of CoTiO_(3).

关键词： Destabilize system Magn.sium hydride Sodium alan.te Hydrogen.storage Additive.

Marin.an.glaciation.in.the In.ian.subcon.in.n.——An.tomy an. global implication.

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Journ.l of Palaeogeography 2024年第2期13卷 293-308页

作者： H.n.Bhattacharya Departmen. of Earth Scien.es Techno India UniversityWest BengalSector VSalt LakeKolkata700091India

Detailed sedimen.ological an.lysis of the Pokaran.Boulder Bed,represen.in. the most basal un.t of the n.oproterozoic-Lower Cambrian.Marwar Supergroup,clearly in.icates its glacial *** glacial sedimen.s are in.erpreted as an.ice-con.act submarin. fan.*** on.the detrital an. in.erited zircon.population.of the Marwar Supergroup sedimen.s an. in.erlayered pyroclastic deposits,a Marin.an.cryochron.of the Cryogen.an.Period is en.isaged for the Pokaran.Boulder *** well-preserved Ediacaran.elemen.s in.the post-glacial sedimen.ary succession.also support a Cryogen.an.to Early Cambrian.age of the Marwar *** glacial deposition.at the base of the Marwar Supergroup stren.then. the region.l correlation.between.the studied sedimen.s with the Lesser Himalayan.Blain.-Krol-Tal sedimen.s an. the Haqf Supergroup of *** available zircon.ages an. paleomagn.tic data of the Malan. Ign.ous suite,alon. with the Marin.an.glacial deposits,detrital zircon.ages,an. Ediacaran.fossil elemen.s of the Marwar Supergroup add sign.fican. in.ormation.to the n.oproterozoic Earth history.

关键词： n.oproterozoic Marin.an.glaciation Diamictites Pokaran.Boulder Bed Marwar Supergroup

A n.te on.Tran.ition.Kern.ls for the Most Un.avourableMixed Strategies of the Market

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Journ.l of the Operation. Research Society of Chin. 2024年第1期12卷 35-50页

作者： Sergey n.Smirn.v Faculty of Computation.l Mathematics an. Cybern.tics Lomonosov Moscow State UniversityMoscowRussian Federation 119991

We con.ider a determin.stic model of market evolution.with tradin. con.train.s an.apply a game-theoretic approach to the superhedgin. *** obtain.sufﬁcien.con.ition. for the game equilibrium an. prove un.er these con.ition. the existen.eof a Borel-measurable tran.ition.kern.l describin. depen.en.e on.price prehistory ofthe most un.avourable mixed strategy of the market.

关键词： Superhedgin. Guaran.eed determin.stic approach Optimal mixedstrategies of the market Borel-measurable tran.ition.kern.l Game equilibrium