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China.Foundry 2024年第1期21卷 60-70页

作者： İsma.l Cem a.g.n Ça.ın Bola. a.i g.kşenli Fa.ulty of Mecha.ica. Eng.neering Istanbul Technical University34437İstanbulTurkey Fa.ulty of Eng.neering Samsun University55420SamsunTurkey

In toda.’s ma.ufa.turing.industries,ha.d competition between riva. firms ma.es it compulsory for resea.chers to desig. lig.ter a.d chea.er ma.hine components due to the meg.0}rends of cost-effectiveness a.d *** this point,a.uminum synta.tic foa.s(a.Fs)a.e new-g.nera.ion eng.neering.composites a.d come into the upfront a. a.*** to their fea.ures like low density,sufficient elong.0}ion,a.d perfect energ. a.sorption a.ility,these a.va.ced foa.s ha.e been considera.ly seductive for ma.y industria. sectors *** this study,a. industria.-oriented a.toma.ic die ca.ting.technolog. wa. used for the first time to ma.ufa.ture the combina.ion of a.7075/porous expa.ded cla.(PEC).Micro eva.ua.ions(optica. a.d FESEM)revea. tha. there is a.homog.nous pa.ticle distribution in the foa. sa.ples,a.d inspections a.e compa.ible with the other a.F ***,T6 a.ing.hea. trea.ment wa. opera.ed on one ha.f of the produced foa.s to explore the proba.le impa.t of a.ing.on the compressive *** results show tha. PEC pa.ticles ca. be a. a.terna.ive to expensive hollow spheres used in the previous ***,a.fa.ora.le rela.ionship is a.certa.ned between the a.ing.trea.ment a.d mecha.ica. properties such a. compression streng.h a.d pla.ea. streng.h.

关键词： die ca.ting porous ma.eria.s meta. ma.rix syta.ctic foa.s expa.ded cla. compressive deforma.ion

Photometric Studies of EV Cnc a.d a. Cnc in the Open Cluster M67

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Resea.ch in a.tronomy a.d a.trophysics 2024年第8期24卷 198-213页

作者： Ma.a.ha.Ra.i g. K.Srira. Deblina.La.iri Vija.a.a. Depa.tment of a.tronomy Osmania University

Conta.t bina.ies a. va.ious sta.es of evolution unveil va.ious opera.ing.mecha.isms tha. drive *** report the photometric a.d period va.ia.ion a.a.ysis of two conta.t bina.ies EV Cnc a.d a. Cnc in open cluster *** observed the cluster from the JCBT 1.3 m telescope a.d utilized TESS a.d Kepler *** photometric solutions of EV Cnc a.d a. Cnc revea.ed a.ma.s ra.io of q～0.41 a.d～0.15 with a. inclina.ion of i=42°a.d87°*** solutions sug.est tha. EV Cnc is proba.ly a.semi-deta.hed a.d a. Cnc is a.deep low-ma.s ra.io conta.t *** study of O-C va.ia.ion a.a.ysis indica.es tha. for both systems,the period is increa.ing.which sug.ests the ma.s tra.sfer is occurring.from seconda.y to *** the ca.e of a. Cnc a.d ba.ed on simula.ions by ra.domly va.ying.the time of minima.to fit the LITE solution,we noted the third body orbita. period to be a.ound P3=26.82±2.54 yr,which is different from ea.lier reported va.ues a.d conclude tha. future observa.ions a.e required to confirm this *** compa.e these two systems with other simila. conta.t bina.ies to g.t a. estima.e of the fina. config.ra.ion of the respective systems.

关键词： (sta.s:) bina.ies (including.multiple): close (sta.s:) bina.ies: eclipsing sta.s: a.tivity

a.sembly of functiona. ca.boxymethyl cellulose/polyethylene oxide/a.a.a.e TiO_(2) na.ocomposites a.d tuning.the dielectric rela.a.ion, optica., a.d photoluminescence performa.ces

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Journa. of Semiconductors 2024年第7期45卷 26-38页

作者： a.ma. M.Isma.l a.eer a.Reffa.e Fa.zy g.El Desouky Spectroscopy Depa.tment Physics Research InstituteNational Research CentreGizaCairo 12622Egypt Microwa.e Physics a.d Dielectrics Depa.tment National Research CentreDokkiCairoEgypt Solid Sta.e Physics Depa.tment Physics Research InstituteNational Research CentreGizaCairo 12622Egypt

na.ocomposite films consisting.of ca.boxymethyl cellulose,polyethylene oxide(CMC/PEO),a.d a.a.a.e tita.ium diox-ide(TO)were produced by the use of sol-g.l a.d solution ca.ting.***2 na.ocrysta.s were effectively incorpora.ed into CMC/PEO polymers,a. shown by X-ra. diffra.tion(XRD)a.d a.tenua.ed tota. reflecta.ce fourier tra.sform infra.ed(a.R-FTIR)*** roug.ness g.owth is a. hig. levels of TO na.ocrysta.s(TO nCs),which mea.s increa.ing.a.tive sites a.d defects in CMC/*** differentia. sca.ning.ca.orimetry(DSC)thermog.a.s,the cha.g. in g.a.s tra.sition tempera.ure(Tg.va.-ues verifies tha. the polymer blend intera.ts with TO *** increment proportions of TO nCs ha.e a.nota.le impa.t on the dielectric performa.ces of the na.ocomposites,a. *** electrica. properties of the CMC/PEO/TO na.ocomposite underg. sig.ifica.t *** na.ocomposite films exhibit a.red a.tera.ion in the a.sorption edg. a. the concentra.ion of TO nCs increa.es in the polymer *** decline in the energ. g.0} is rea.ily a.pa.ent a. the weig.t percenta.e of TO nCs *** photoluminescence(PL)emission spectra.indica.e tha. the sites of the luminescence pea. ma.imums show slig.t va.ia.ion;pea.s g.t wider,while their intensities decrea.e dra.a.ica.ly a. the concentra.ion of TO *** na.ocomposite ma.eria.s show potentia. for multifunctiona. a.plica.ions including.optoelectronics,a.tireflection coa.ing.,pho-toca.a.ysis,lig.t emitting.diodes,a.d solid polymer electrolytes.

关键词： a.a.a.e TiO_(2) CMC/PEO na.ocomposites optica. photoluminescent electrica. optoelectronics

Cha.leng.s a.d opportunities in the production of ma.nesium pa.ts by directed energ. deposition processes

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Journa. of Ma.nesium a.d a.loys 2024年第5期12卷 1663-1686页

作者： g.rel Ca.a.a.i g.nen Iskenderun Technica. University Faculty of Engineering and Natural SciencesDepartment of Mechanical Engineering31200˙Iskenderun-HatayTurkey Iskenderun Technica. University Faculty of Engineering and Natural SciencesDepartment of Metallurgy and Materials Engineering31200 Iskenderun-HatayTurkey

Mg.a.loys ha.e g.0}ned considera.le a.tention in recent yea.s for their outsta.ding.properties such a. lig.tweig.t,hig. specific streng.h,a.d corrosion resista.ce,ma.ing.them a.tra.tive for a.plica.ions in medica.,a.rospa.e,a.tomotive,a.d other tra.sport ***,their widesprea. a.plica.ion is hindered by their low forma.ility a. room tempera.ure due to limited slip *** Mg.a.loys ha.e low mecha.ica. properties due to the presence of ca.ting.defects such a. porosity a.d a.isotropy in a.dition to the hig. *** ca.ting.methods benefit from esta.lished process optimiza.ion techniques for these problems,a.ditive ma.ufa.turing.methods a.e increa.ing.y repla.ing.ca.ting.methods in Mg.a.loys a. they provide more precise control over the microstructure a.d a.low specific g.a.n orienta.ions,potentia.ly ena.ling.ea.ier optimiza.ion of a.isotropy properties in certa.n *** meta. a.ditive ma.ufa.turing.Ma.)technolog. a.so results in some ma.ufa.turing.defects such a. inhomog.neous microstructura. evolution a.d porosity a.d a.ditively ma.ufa.tured Mg.a.loy pa.ts exhibit lower properties tha. the wroug.t pa.ts,they in g.nera. exhibit superior properties tha. the ca.t ***,Ma. is a.promising.technique to produce Mg.a.loy *** energ. deposition processes,pa.ticula.ly wire a.c directed energ. deposition(Wa.DED),ha.e emerg.d a. a. a.va.ta.eous a.ditive ma.ufa.turing.a.)technique for meta.lic ma.eria.s including.ma.nesium a.loys,offering.a.va.ta.es such a. hig. deposition ra.es,improved ma.eria. efficiency,a.d reduced production costs compa.ed to subtra.tive ***,the inherent cha.leng.s a.socia.ed with ma.nesium,such a. its hig. rea.tivity a.d susceptibility to oxida.ion,pose unique hurdles in the a.plica.ion of this *** review pa.er delves into the prog.ess ma.e in the a.plica.ion of DED technolog. to Mg.a.loys,its cha.leng.s,a.d ***,the predomina.t imperfections,nota.ly inhomo

关键词： a.ditive ma.ufa.turing DED processes a.c-DED Wire a.c a.ditive ma.ufa.turing.Wa.M) 3-D printing Hig. deposition ra.e

Recent resea.ch in mecha.ica. properties of g.opolymer-ba.ed ultra.ig.-performa.ce concrete:a.review

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Defence Technolog.（防务技术） 2024年第2期32卷 67-88页

作者： g.Mura.i Division of Resea.ch&Innova.ion Uttaranchal UniversityDehradun 248007India

Due to the g.owing.need for susta.na.le a.d ultra.hig.-streng.h construction ma.eria.s,scientists ha.e crea.ed a. innova.ive ultra.hig.-performa.ce concrete ca.led g.opolymer ba.ed ultra.hig.performa.ce concrete(g.HPC).Besides,in the la.t few deca.es,there ha.e been a.lot of explosions a.d ba.listic a.ta.ks a.ound the world,which ha.e killed ma.y civilia.s a.d fig.ters in border *** this context,this a.ticle reviews the fresh sta.e a.d mecha.ica. properties of ***,the ing.edients of g.HPC a.d fresh properties such a. setting.time a.d flowa.ility a.e briefly ***,the review of compressive streng.h,flexure streng.h,tensile streng.h a.d modulus of ela.ticity of fibrous ***,the bla.t a.d projectile impa.t resista.ce performa.ce wa. ***,the microstructura. cha.a.teristics were reviewed using.the sca.ning.electron microscope a.d X-ra. Powder *** review outcome revea.s tha. the mecha.ica. properties were increa.ed when 30%silica.fume wa. a.ded to a.hig.er dose of steel fibre to improve the microstructure of *** is hypothesized tha. the brittleness of g.HPC wa. mitig.0}ed by a.ding.1.5%steel fibre reinforcement,which pla.ed a.role in the decrea.e of conta.t explosion cra.ering.a.d *** the need for cement in g.HPC wa. a.key fa.tor in the review,indica.ing.a.promising.potentia. for lowering.ca.bon ***,g.HPC resea.ch is still in its ea.ly sta.es,so more study is required before its full potentia. ca. be utilized.

关键词： Mecha.ica. properties Bla.t Projectile impa.t Fibre g.opolymer Silica.fume a.ka.ine a.tiva.ors

Structura. cha.g.s in the obese bra.n

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neura. Reg.nera.ion Resea.ch 2024年第12期19卷 2561-2562页

作者： a.na.R.R.Da.Conceica. Ma.celo n.n.Vieira.Ferna.da.g.De Felice D’Or Institute for Resea.ch a.d Educa.ion Rio de JaneiroBrazil Institute of Medica. Biochemistry Leopoldo De Meis Federal University of Rio de JaneiroRio de JaneiroBrazil Centre for neuroscience Studies Department of Biomedical and Molecular Sciences&Department of PsychiatryQueen’s UniversityKingstonONCanada

Obesity represents a.ma.or g.oba. hea.th concern,with widesprea. g.owing.preva.ence a.d severe consequences for the qua.ity of life a.d life expecta.cy of a.fected individua.s a.d for the economic burden of hea.thca.e systems(Prospective Studies Colla.ora.ion,2009).Obesity is a.well-esta.lished risk fa.tor for a.va.iety of conditions including.meta.olic,va.cula.r,a.d hea.t disea.es,a.d seve ra. types of ca.cer(Prospective Studies Colla.ora.ion,2009).

关键词： disea.es consequences preva.ence

Effects of frothers on bubbles size a.d flota.ion performa.ce of hydrophobic minera.s

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Journa. of Centra. South University 2024年第7期31卷 2280-2299页

作者： g.lşa. g.VEn Beriva. TUnÇ ŞBeste a.DIn g.la. BULUT Minera. Processing.Eng.neering.Depa.tment Faculty of MinesIstanbul Technical UniversityMaslak 34469IstanbulTurkey Resea.ch Center Metso OutotecKuparitie 1028101 PoriFinland

Frothers fa.ilita.e the reduction of bubbles size by preventing.bubbles coa.escence a.d produce more sta.le *** collision proba.ility of the bubbles a.d pa.ticles substa.tia.ly increa.es by decrea.ing.bubble *** the sa.e volume system,fewer bubbles result from a.distribution of la.g.-sized bubbles,a.d more bubbles result from a.distribution of sma.l-sized *** this resea.ch,funda.enta. two-pha.e frother cha.a.teriza.ion pa.a.eters were a.med to link with three-pha.e coa. a.d ta.c flota.ion *** this purpose,the effect of sing.e a.d dua. frother systems on inhibiting.bubble coa.escence wa. investig.0}ed with methyl isobutyl ca.binol(MIBC),isoocta.ol(2 ethyl hexa.ol),pine oil,a.d Dowfroth *** on the results of sing.e frothers,isoocta.ol a. the lowest critica. coa.escence concentra.ion(CCC)va.ue of 6×10^(−6) a.hieved the sma.lest bubbles with Sa.ter mea. dia.eter of 0.80 *** blending.Dowfroth 250 a.d pine oil,the bubbles size decrea.ed sig.ifica.tly,rea.hing.0.45 *** the hig.est recoveries in coa. flota.ion were obta.ned in sing.e a.d frother blends where the bubbles size wa. mea.ured a. the sma.lest in two-pha.e system,a.d such a.rela.ionship wa. not found for ta.c flota.ion.

关键词： flota.ion frother blends bubble size coa. a.d ta.c flota.ion

nitrog.n minera.iza.ion in the oldest clima. communities in the ea.tern Mediterra.ea. reg.on

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Journa. of Forestry Resea.ch 2024年第1期35卷 213-228页

作者： Fa.ma.Selcen Sa.a. g.rca. g.leryüz Depa.tment of Biolog. Section Ecology GörükleGraduate School of Natural and Applied ScienceUniversity of Bursa Uludağ16059 NilüferBursaTurkey Depa.tment of Biolog. Section Ecology GörükleFaculty of Science and ArtsUniversity of Bursa Uludağ16059 NilüferBursaTurkey

In this study,we investig.0}ed how tree species a.fect n minera.iza.ion in connection to some soil properties a.d seconder meta.olite levels of litter,in the soil of the old-est na.ive forest *** the oldest pure communi-ties of Pinus nig.a.Pn),Fa.us orienta.is(FO),a.d a.ies bornmuelleria.a.a.)in the mounta.n ra.g. of Mount Uluda.,Bursa.Turkey,a.nua. net yield a.d n minera.iza.tion in the 0-5-a.d 5-20-cm soil la.ers were determined in a.field incuba.ion study over 1 *** loca.ions were chosen from 1300 to 1600 m a.s.l.,a.d moisture content(%),pH,wa.er-holding.ca.a.ity(%),org.0}ic C,tota. n,a.d C/n ra.io,a.d a.nua. net minera. n yield of the soil a.d hydro-lyzed ta.nic a.id a.d tota. phenolic compounds in litter were compa.ed for these forest *** ha. the hig.est a.nua. net nmin yield(43.9±4.8 kg.ha.(-1) a.(-1)),*** the lowest(30.5±4.2 kg.ha.(-1) a.(-1)).Our finding. show tha. in the oldest forest ecosystems,the sea.ona. soil moisture content a.d tree species pla. a. essentia. role in n cycling.a.d tha. hydrolyzed ta.nic a.ids a.d tota. phenolic compounds effectively control n *** a.id a.d tota. phenolics in the litter were found to inhibit nitrifica.ion,but tota. phenolics were found to stimula.e a.monifica.ion.

关键词： Oldest forest communities nitrog.n minera.iza.ion nitrifica.ion Ta.nic a.id Tota. phenolic Litter

Shell-model representa.ions of the microscopic version of the Bohr–Mottelson collective model

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Communica.ions in Theoretica. Physics 2024年第8期76卷 81-92页

作者： H g.g.0}ev Joint Institute for nuclea. Resea.ch Dubna Russia Institute of Mechanics Bulgarian Academy of Sciences

The structure of the irreducible collective spa.es of the g.oup Sp（12, R）, which ma.y-pa.ticle nuclea. sta.es a.e cla.sified a.cording.to the cha.n Sp（12, R） ? U（6） ? SO（6） ? SUpn（3） ■SO（2） ? SO（3） of the proton–neutron symplectic model（PnSM）, is considered in deta.l. This cha.n of the PnSM wa. recently shown to correspond to a.microscopic shell-model version of the Bohr–Mottelson collective model. The construction of the releva.t shell-model representa.ions of the Sp（12, R） g.oup a.ong.this cha.n is considered for three nuclei with va.ying.collective properties a.d from different ma.s reg.ons. It is shown tha. the SUpn（3） ba.is sta.es of the Sp（12, R） representa.ions belong.ng.to the SO（6） irreps with seniority υ ≥ υ0, with υ0denoting.the ma.ima. seniority SO（6） irrep conta.ned in the Sp（12, R） ba.dhea., a.e a.wa.s Pa.li a.lowed, but org.0}ized in a.different wa. into different SO（6） shells. This is in contra.t to the ca.e of filling.the levels of the sta.da.d three-dimensiona. ha.monic oscilla.or a.d using.the plethysm opera.ion. a.thoug. the SUpn（3） multiplets within υ a.e not a.l Pa.li forbidden, it is sa.e to disca.d them. The results obta.ned in the present work a.e importa.t for the pra.tica. a.plica.ion of the microscopic version of the Bohr–Mottelson collective model.

关键词： microscopic shell-model version of the Bohr-Mottelson model proton-neutron symplectic model shell-model representa.ions Sp(12, R) dyna.ica. a.g.bra

Ha.monics in the Squirrel Ca.e Induction Motor a.a.ytic Ca.cula.ion Pa.t III: Influence on the Torque-speed Cha.a.teristic

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CES Tra.sa.tions on Electrica. Ma.hines a.d Systems 2024年第1期8卷 86-102页

作者： g.Kovács the g.0}z Electric Works BudapestHungary

The ha.monics tha. a.pea. in the squirrel ca.e a.ynchronous ma.hine ha.e been discussed in g.ea. deta.l in the litera.ure for a.long.time. However, the systema.iza.ion of the phenomenon is still pending. so we ma.e a. a.tempt to fill this g.0} in the previous pa.ts of our study by ela.ora.ing.formula. for ca.cula.ion of pa.a.itic torques. It wa. a.g.nera. dema.d a.ong.those who work in this field towa.ds the a.thor to verify his formula. with mea.urements. In the litera.ure, it seems,only one deta.led, purposeful series of mea.urements ha. been published so fa., the purpose of which wa. to investig.0}e the effect of the number of rotor slots on the torque-speed cha.a.teristic curve of the ma.hine. The ma.n g.a. of this study is to verify the correctness of the formula. by compa.ing.them with the referred series of mea.urements. Relying.on this, the expected synchronous pa.a.itic torques were developed for the frequently used rotor slot numbers-a. a.desig. g.ide for the ***, tog.ther with our complete ta.le for ra.ia. ma.netic pull published in our previous work, the desig.er ha. a.l the principles, da.a.a.d formula. a.a.la.le for the rig.t number of rotor slots for his g.ven ma.hine a.d for the drive system. This bring. this series of pa.ers to a. end.

关键词： a.ynchronous pa.a.itic torques Induction motor Squirrel ca.e rotor Spa.e ha.monics Synchronous pa.a.itic torques