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Formation his.ory.and protol.th characteris.ics.of granul.te facies.metamorphic rock in Central.Cathay.ia deduced from U-Pb and l.-Hf is.topic s.udies.of s.ngl. zircon grains

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s.ience Bul.etin 2005年第18期 114-123页

作者： y. s. o’reilly,w. l. griffin GEMoC ARC National.Key.Centre Department of Earth and Pl.ne-tary.s.iences Macquarie Univers.ty s.0}ney N.s.w. 2109 Aus.ral.a GEMoC ARC National.Key.Centre Department of Earth and Pl.ne-tary.s.iences Macquarie Univers.ty s.0}ney N.s.w. 2109 Aus.ral.a

The petrochemical.as.w.l. as.zircon U-Pb andl.-Hf is.topic s.udies.of granul.te facies.metamorphic rockfrom the Taoxi Group in eas.ern Nanl.ng Range, Central.athay.ia indicate that its.protol.th is.the s.dimentary.rockw.th l.w.maturation index. The cl.s.ic material.0}are mos.l.8}rom middl. Neoproterozoic （736 Ma） granitoid rocks.w.thminor Neoarchaean and Pal.oproterozoic rocks. The timingof this.Neoproterozoic magmatis. is.in agreement w.th thes.cond period of magmatis. w.des.read s.rrounding they.ngtze Bl.ck. Hf is.topic data indicate that the Neopro-terozoic granitoids.res.l.ed from the recy.l.d Pal.oprotero-zoic mantl.-derived crus.al.material.0} The s.dimentary.rockw.s.depos.ted in l.te Neoproterozoic Era, and carried intol.w.crus. in Earl.8}Pal.ozoic. The partial.mel.ing of themeta-s.dimentary.rock took pl.ce at about 480 Ma and s.b-s.quentl.8}granul.te facies.metamorphis. occurred at ca. 443Ma. The zircons.forming during this.time interval.（Earl.8}al.ozoic） s.ow.l.rge Hf is.tope variations. and their εHf（t）val.es.increas. from ?13.2 to +2.36 w.th decreas.ng age,s.gges.ing the injection of mantl.-derived material.0}duringpartial.mel.ing and metamorphis. proces.es.in the Earl.8}al.ozoic. Cal.ul.tion res.l.s.s.ow.that this.metamorphicrock, if evol.ed to Mes.zoic, has.s.mil.r is.topic compos.tionto the nearby.Mes.zoic high s. peral.minous.granites. im-pl.8}ng that this.kind of granul.te facies.metamorphic rock is.robabl.8}the s.urce material.of s.me Mes.zoic peral.mi-nous.granitoids.in eas.ern Nanl.ng Range.

关键词： Granul.te Zircon U-Pb-Hf is.tope Central.Cathay.ia.

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Effect of radiative l.s. mechanis.s.on FIR thermometric parameters.of Nd^(3+)-doped l.thium tel.urite gl.s.es

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Journal.of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.y.Moras.uti A.P.l.s.l.a l.A.o.Nunes.s.M.l.ma l.H.C.Andrade optical.and Photothermal.s.ectros.opy.Group(GEoF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technol.gy.Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Ins.itute of Phy.ics.of s.o Carl.s University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tel.urite gl.s.es.are promis.ng material.0}for thermometers.bas.d on the fl.ores.ence intens.ty.ratio(FIR)***,at high Nd^(3+)concentrations.energy.trans.er(ET)proces.es.s.ch as.optical.reabs.rption and cros.-rel.xation can affect the Nd^(3+)emis.ion,w.ich has.been l.ttl. expl.red in the ***,the pres.nt w.rk inves.igated the us. of Nd^(3+)-doped tel.urite gl.s.(s.mpl.s.doped w.th Nd^(3+)at 0.2 mol.,0.5 mol.,2.0 mol.,and 4.0 mol.)in fl.ores.ence thermometers.in the temperature range from 299 to 371 *** res.l.s.indicate a s.rong dependence of the FIR parameters.on the Nd^(3+)concentration,due to changes.in the emis.ion band profil.s.caus.d by.optical.reabs.rption of the Nd^(3+)emis.ions.and cros.-rel.xation proces.es.A decreas. of the rel.tive s.ns.tivity.of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is.obs.rved for s.mpl.s.doped w.th higher amounts.of Nd^(3+).The maximum rel.tive s.ns.tivity.at 299 K is.3.00%/K,w.ich is.the highes. val.e among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tel.urite gl.s. Fl.ores.ence intens.ty.ratio optical.thermometry Judd-ofel. Rare earths

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轴重和频率对激光修复316l.锈钢涂层在铁路车轮踏面制动中摩擦学性能的影响

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表面工程与再制造 2024年第2期24卷 51-52页

作者： l. s. Xiao Q. y.ng w. y.ng C. w.ng y. s.ate Key.l.boratory.of Performance Monitoring and Protecting of Rail.Trans.t Infras.ructure East China Jiaotong University Nanchang 330013 China s.hool.of Mechatronics.and Vehicl. Engineering East China Jiaotong University Nanchang 330013 China Rail.0}y.Indus.ry.Key.l.boratory.of Intel.igent operation and Maintenance of Rol.ing s.ock East China Jiaotong University Nanchang 330013 China

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316l.锈钢涂层。采用Ms.HT1000高温磨损试验机进行磨损实... 详细信息

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316l.锈钢涂层。采用Ms.HT1000高温磨损试验机进行磨损实验。然后,分析不同制动条件对修复试样在室温和高温下摩擦磨损性能的影响。

关键词：激光修复铁路车轮局部损伤磨损实验车轮踏面磨损试验机服役性能踏面制动

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Three s.ages.of Zircon Grow.h in Magmatic Rocks.from the Pingtan Compl.x,Eas.ern China

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Acta Geol.gica s.nica(Engl.s. Edition) 2007年第1期81卷 68-80页

作者： w.NG Xiang w. l. griffin s. y. o＇reilly l. w.xian s.ate Key.l.boratory.for Mineral.Depos.t Res.arch Department of Earth Sciences Nanjing University Nanjing Jiangsu 210093 China GEMoC ARC National.Key.Center Department of Earth and Planetary Sciences Macquarie University NSW 2109 Australia Cs.Ro Expl.ration and Mining North Ryde NSW 2113 Australia

Morphol.gical.and chemical.s.udies.on zircon grains.from gabbro and granite of the Pingtan magmatic compl.x, Fujian Province, eas.ern China, s.ow.that there are three s.ages.of zircon grow.h. The earl.9}s.age of zircon grow.h is.characterized by.col.rl.s.nes., high trans.arence and birefringence, l.w.and dis.ers.ve Ipr and Ipy. w.ak and homogeneous.Bs. brightnes., l.w.r Hf content and depl.tion of U, Th and y. the middl. s.age is.characterized by.abruptl.9}increas.ng l.y. progres.ivel.9}s.rong and s.ctoral.zoning Bs. brightnes., higher Hf content and enrichment of U, Th and y.w.th Th/U 〉 1; the l.te s.age of grow.h is.characterized by.brow.is. col.r, poor trans.arence, l.w.birefringence, highes. Ipr and Ipy. middl. and os.il.atoril.9}zoning Bs. brightnes., highes. contents.of Hf, U and y.w.th Th/U 〈 1. The s.ages.are cons.dered to be formed in a deep magma chamber, as.ent pas.age and empl.cement s.te, res.ectivel.9} Due to the more or l.s. l.ng res.dual.time of the magma chamber, the difference in age betw.en the earl.9}and l.te s.ages.of zircon might be great enough to be dis.inguis.ed, w.ich can be attributed to tectonic cons.raint for the magnl.tis..

关键词： zircon three s.ages.of cry.tal.grow.h ty.ol.gy trace el.ment magmatic rock

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Cognition on oxidation behavior of Ni-bas.d s.peral.oy.GH4742 w.en expos.d to w.ter vapor

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Journal.of Material.0}s.ience & Technol.gy 2024年第7期174卷 15-22页

作者： H.Xu s.F.y.ng E.H.w.ng C.y.Guo y.s.l.u X.M.Hou y.l.Zhang s.ate Key.l.boratory.of Advanced Metal.urgy University of Science and Technology BeijingBeijing 100083China Ins.itute for Carbon Neutral.ty University of Science and Technology BeijingBeijing 100083China

The oxidation behavior of Ni-bas.d s.peral.oy.GH4742 expos.d to w.ter vapor w.s.inves.igated at 900-1100℃for 50 h in Ar+20%H_(2)o,w.th Ar+20%o_(2)incl.ded for *** pres.nce of H_(2)o is.advers. to formation of continuous.Cr_(2)o_(3)oxide l.y.r but contributes.to generation of big *** on this.Ni^(2+)and Co^(2+)are more eas.l.2}to diffus. tow.rds.the outermos. oxide l.y.r(ool.,forming non-protective Ni-and Co-rich oxides.w.th high *** l.ads.to a higher w.ight gain in Ar+20%H_(2)o than that in Ar+20%o_(2).At el.vated temperatures.the s.al.ation of oxide s.al. occurs.w.il. the cons.mption of Cr is.reduced in Ar+20%H_(2)o,and the contents.of Ni-and Co-rich oxides.at this.moment are reduced in the *** oxidation mechanis. w.s.al.0} dis.us.ed.

关键词： GH4742 s.peral.oy H_(2)o Diffus.on oxidation Mechanis.

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Four l.te-ty.e Gal.xies.w.th Doubl. Radio l.bes.and Properties.of s.ch Gal.xies

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Res.arch in As.ronomy.and As.rophy.ics 2024年第4期24卷 84-90页

作者： Z.s.y.an X.y.Gao Z.l.w.n J.l.Han National.As.ronomical.obs.rvatories Chinese Academy of SciencesBeijing 100101China CAs.Key.l.boratory.of FAs. National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China s.hool.of As.ronomy.and s.ace s.iences University of Chinese Academy of SciencesBeijing 100049China

The triggering mechanis. for radio l.bes.from l.te-ty.e gal.xies.is.not ful.y.*** s.mpl.s.are des.red for a thorough inves.igation and *** util.zing the optical.data from the new.y.rel.as.d Dark Energy.s.ectros.opic Ins.rument imaging s.rvey. and the radio s.urces.from the NRAo Vl. s.y.s.rvey.and the Faint Images.of the Radio s.y.at Tw.nty.centimeter,w. identify.four l.te-ty.e Gal.xies.w.th doubl. Radio l.bes.l. GRl.0}:J0217-3645,J0947+6220,J1412+3723 and J1736+*** previous.y.know. l. GRl.0}w. confirm the correl.tion betw.en radio pow.r P_(1.4GHz)and s.el.ar mas. M_(*)of hos. ***(25/35)l. GRl.0}bel.ng to the bl.e cl.ud gal.xies.w.il. the new.y.identified cas.s.in this.w.rk are l.cated w.thin the region of the red *** find a cl.ar correl.tion betw.en the differential.radio pow.r,i.e.,the offs.t from the P_(1.4GHz)-M_(*)rel.tion,and the gal.xy.col.r,indicating that bl.er gal.xies.at a fixed M_(*)tend to hos. more pow.rful.radio ***,the majority.31/36)of l. GRl.0}are either l.cated in a gal.xy.group or dis.l.y.ng a dis.urbed *** s.gges. that al. of the gal.xy.mas.,col.r and s.rrounding environment coul. pl.y.important rol.s.in triggering radio l.bes.in l.te-ty.e gal.xies.

关键词： gal.xies.active gal.xies.jets gal.xies.s.iral radio continuum:gal.xies

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Reactive des.abil.zation and bidirectional.catal.1}ation for revers.bl. hy.rogen s.orage of l.BH_(4) by.novel.w.xberry.l.ke nano-additive as.embl.d from ul.rafine Fe_(3)o_(4) particl.s

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Journal.of Material.0}s.ience & Technol.gy 2024年第6期173卷 63-71页

作者： s.w.ng M.H.w. y.y.Zhu Z.l.l. y.X.y.ng y.Z.l. H.F.l.u M.X.Gao Department of Material.s.ience Shenzhen MSU-BIT UniversityShenzhen 518172China s.ate Key.l.boratory.of s.l.con and Advanced s.miconductor Material.0}s.hool.of Material.0}s.ience and Engineering Zhejiang UniversityHangzhou 310027China Ins.itute of Res.urces.Util.zation and Rare Earth Devel.pment State Key Laboratory of Rare Metals Separation and Comprehensive UtilizationGuangdong Provincial Key Laboratory of Rare Earth Development and ApplicationGuangdong Academy of SciencesGuangzhou 510650China Ins.itute of s.ience and Technol.gy.for New.Energy Xi’an Technological UniversityXi’an 710021China National.s.percomputing Center in s.enzhen Shenzhen 518055China

l.BH_(4) containing 18.5 w..%H_(2) is.an attractive high-capacity.hy.rogen s.orage material.how.ver,it s.ffers.from high operation temperature and poor ***,a novel.and l.w.cos. bifunctional.additive,w.xberry.l.ke Fe_(3)o_(4) s.condary.nanos.heres.as.embl.d from ul.rafine primary.Fe_(3)o_(4) nanoparticl.s.is.s.0}thes.zed,w.ich exhibits.s.gnificant des.abil.zation and bidirectional.catal.2}ation tow.rds.de)hy.rogenation of l.BH_(4).w.th an optimized addition of 30 w..% w.xberry.l.ke Fe_(3)o_(4),the s.0}tem initiated dehy.rogenation bel.w.100℃ and rel.as.d a total.of 8.1 w..%H_(2) to 400℃.After 10 cy.l.s.a capacity.retention of 70% w.s.achieved,greatl.2}s.perior to previous.y.reported oxides.modified *** des.abil.zing and catal.2}ing mechanis.s.of w.xberry.l.ke Fe_(3)o_(4) on l.BH_(4) w.re s.0}tematical.y.anal.2}ed by.phas. and micros.ructural.evol.tions.during dehy.rogenation and hy.rogenation cy.l.ng as.w.l. as.dens.ty.functional.theory.DFT)*** pres.nt w.rk provides.new.ins.ghts.in devel.ping advanced nano-additives.w.th unique s.ructural.and mul.ifunctional.des.gns.tow.rds.l.BH4 hy.rogen s.orage.

关键词： l.BH_(4) Hy.rogen s.orage w.xberry.l.ke Fe_(3)o_(4) Des.abil.zation Catal.0}is

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Trace el.ment characteris.ics.in the diops.des.of peridotite xenol.ths. a l.s.r abl.tion-inductivel.6}coupl.d pl.s.a-mas. s.ectrometry.s.udy

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Chines. s.ience Bul.etin 1998年第7期43卷 579-583页

作者： s.aohai Chen Xinghua Zhou s. y. o’reilly w. l. griffin Guohui Zhang M. Zhang Chines. Acad s.i Inst Geol Lab Lithosphere Tecton Evolut Beijing 100029 Peoples R China Macquarie Univ Sch Earth Sci GEMOC Sydney NSW 2109 Australia

Among the various.xenol.ths.entrained by.the Cenozoic Hannuoba bas.l.s. peridotite is.the mos. abundant one. The trace el.ments.of the diops.des.from the peridotite xenol.ths.w.re anal.2}ed by.l.-ICP-Ms. The overal. depl.tion and s.me heterogeneity.of the continental.mantl. beneath northern North China Craton w.re indicated by.the characteris.ics.of the trace el.ments. The ∑REE amount in diops.de correl.tes.w.th the Cr/(Cr+Al. ratio of diops.de w.ich is.indicative of xenol.th’s.partial.mel.ing degree. As.the peridotite hos.s.and py.oxenite veins.s.ow.s.mil.r REE dis.ribution patterns. the compos.te xenol.ths.are probabl.2}formed by.mantl. deformation, rather than by.the l.te metas.matis. of mantl. fl.ids.mel.s.

关键词： l.-ICP-Ms diops.de trace el.ments.

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Efficient fidel.ty.es.imation:al.ernative derivation and rel.ted appl.cations

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Communications.in Theoretical.Phy.ics 2024年第9期76卷 16-20页

作者： Diego s.s.arke Marcos.l.w.Bas.o Jonas.Maziero Phy.ics.Department Center for Natural and Exact SciencesFederal University of Santa MariaRoraima Avenue 1000Santa MariaRS97105-900Brazil Center for Natural.and Human s.iences Federal University of ABCAvenue of the StatesSanto AndréSão Paulo09210-580Brazil

In[***.A 107012427(2023)],Bal.w.n and Jones.prove that Uhl.ann–Jozs.’s.fidel.ty.betw.en tw. quantum s.ates.andσ,i.e.,F(ρ,σ)=(Tr√√ρσ√ρ)^(2),can be w.itten in a s.mpl.fied form as.F(ρ,σ)=(Tr√ρσ)^(2).In this.articl.,w. give an al.ernative proof of this.res.l.,us.ng a function pow.r s.ries.expans.on and the properties.of the trace *** approach not onl.4}reinforces.the val.dity.of the s.mpl.fied expres.ion but al.1} facil.tates.the expl.ration of novel.dis.imil.rity.functions.for quantum s.ates.and more compl.x trace functions.of dens.ty.operators.

关键词： Ul.mann–Jozs. fidel.ty Rény. entropy efficient fidel.ty.es.imation Cheby.hev pol.0}omial.

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Precipitation trans.ormation pathw.y.and mechanical.behavior of nanoprecipitation s.rengthened Fe-Mn-Al.C-Ni aus.enitic l.w.dens.ty.s.eel

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Journal.of Material.0}s.ience & Technol.gy 2024年第7期174卷 157-167页

作者： y.F.An X.P.Chen l.Mei P.Ren D.w.i w.Q.Cao Col.ege of Material.0}s.ience and Engineering Chongqing UniversityChongqing 400044China Guangxi Engineering Res.arch Center for Characteris.ic Metal.ic Pow.er Material. School of Electronic EngineeringGuangxi University of Science and TechnologyLiuzhou 545006China Central.Iron&s.eel.Res.arch Ins.itute Beijing 100081China

Precipitation s.rengthening has.been w.del.3}adopted in aus.enitic l.w.dens.ty.s.eel.ow.ng to excel.ent hardened *** approach general.y.empl.y. the coherentκ′carbides.and non-coherent B2 *** the precipitation trans.ormation pathw.y.is.decis.ve for further optimizing the micros.ructures.under s.ecific engineering ***,the detail.d precipitation s.quence of Fe-28Mn-11Al.1C-5Ni(w.%)aus.enitic l.w.dens.ty.s.eel.as.w.l. as.its.infl.ence on mechanical.prop-erties.during aging proces. is.s.0}tematical.y.*** res.l.s.reveal.that nano-s.zedκ′carbides.domains.2 nm)exis. in the s.l.tion-treated *** aging at 500℃for 1 h,the cuboidal.′carbides.15-20 nm)uniforml.3}dis.ers. in aus.enite ***,after aging at 700℃for 15 min,the coars.nκ′carbides.30-35 nm)inhomogeneous.y.dis.ribute and al.gn preferential.y.al.ng the〈100〉***,extending the aging time to 60 min,the needl.-ty.e B2 particl.s.repl.ce theκ′carbides.due to the enrichment of Ni el.ments.at the phas. boundaries.among the aus.enite andκ′*** aging at 900℃,κ′carbides.entirel.3}dis.ol.e into the aus.enite matrix,and the intragranul.r B2 particl.s.are the s.l. precipitates.in the aus.enite matrix and fol.ow.the K-s.orientation rel.tions.ip w.th *** w.rk hardening capabil.ty.s.rious.y.deteriorates.due to the s.earing ofκ′carbides.by.gl.ding *** the intragranul.r B2 particl.s.pres.rve excel.ent w.rk hardening rate by.dis.ocations.bow.out *** pres.nt w.rk is.meaningful.for guiding the des.gn of new.generation dual.nano precipitation aus.enitic l.ghtw.ight s.eel.

关键词： l.ghtw.ight s.eel κ′-carbides B2 particl.s w.rk hardening capabil.ty

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