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Low crude prot.in form.lat.on wit. supplem.nt.l am.no acids for it. im.act. on int.st.nal healt. and growt. perform.nce of growing-finishing pigs

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Journal of Anim.l Science and Biot.chnology 2024年第4期15卷 1590-1606页

作者： m.rcos Elias Duart. Wanpuech Parnsen Shihai Zhang m.rvio L.t.Abreu Sung Woo Kim Depart.0}nt.of Anim.l Science North Carolina State UniversityRaleighNC 27695USA

Background Low crude prot.in(CP)form.lat.ons wit. supplem.nt.l am.no acids(AA)are used t. enhance int.st.nal healt.,reduce cost.,m.nim.ze environm.nt.l im.act.and m.int.in growt. perform.nce of ***,ext.nsive reduct.on of diet.ry CP can com.rom.se growt. perform.nce due t. lim.t.d synt.esis of non-essent.al AA and lim.t.d availabilit. of bioact.ve com.ounds from.prot.in supplem.nt. even when AA requirem.nt. are ***,im.lem.nt.ng a low CP form.lat.on can increase t.e net.energy(NE)cont.nt.in feeds causing excessive fat.*** supplem.nt.t.on of funct.onal AA,coupled wit. low CP form.lat.on could furt.er enhance int.st.nal healt. and glucose m.t.bolism.im.roving nit.ogen ut.lizat.on,and growt. *** experim.nt. were conduct.d t. evaluat. t.e effect. of low CP form.lat.ons wit. supplem.nt.l AA on t.e int.st.nal healt. and growt. perform.nce of growing-finishing *** In Exp.1,90 pigs(19.7±1.1 kg,45 barrows and 45 gilt.)were assigned t. 3 t.eat.0}nt.:CON(18.0%CP,supplem.nt.ng Lys,m.t.and t.r),LCP(16.0%CP,supplem.nt.ng Lys,m.t.t.r,t.p,and Val),and LCPt.16.1%CP,LCP+0.05%SID t.p).In Exp.2,72 pigs(34.2±4.2 kg BW)were assigned t. 3 t.eat.0}nt.:CON(17.7%CP,m.et.ng t.e requirem.nt. of Lys,m.t.t.r,and t.p);LCP(15.0%CP,m.et.ng Lys,t.r,t.p,m.t.Val,Ile,and Phe);and VLCP(12.8%CP,m.et.ng Lys,t.r,t.p,m.t.Val,Ile,Phe,His,and Leu).In Exp.3,72 pigs(54.1±5.9 kg BW)were assigned t. 3 t.eat.0}nt. and fed experim.nt.l diet. for 3 phases(grower 2,finishing 1,and finishing 2).t.eat.0}nt. were CON(18.0%,13.8%,12.7%CP for 3 phases;m.et.ng Lys,m.t.t.r,and t.p);LCP(13.5%,11.4%,10.4%CP for 3 phases;m.et.ng Lys,t.r,t.p,m.t.Val,Ile,and Phe);and LCPG(14.1%,12.8%,11.1%CP for 3 phases;LCP+Glu t. m.t.h SID Glu wit. CON).All diet. had 2.6 m.al/kg *** In Exp.1,overall,t.e growt. perform.nce did not.differ am.ng *** LCPt.increased(Pt.e duodenum.and *** LCP and LCPt.increased(Pt.1,4F2hc,and B0At.exp

关键词： Am.no acids Growing-finishing pigs Growt. perform.nce Int.st.nal healt. Low crude prot.in form.lat.on Net.energy

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Recent.Advances in Cat.lyt.c Carbonylat.on React.ons in Alt.rnat.ve React.on m.dia

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Chinese Journal of Chem.st.y 2024年第4期42卷 406-429页

作者： Csaba Árvai László t.m.ka Depart.0}nt.of Chem.cal and Environm.nt.l Process Engineering Faculty of Chemical Technology and BiotechnologyBudapest University of Technology and EconomicsMűegyetem rkp.3H-1111 BudapestHungary

Since t.e discovery of t.e hydroform.lat.on(oxo-synt.esis or Roelen react.on)and t.e Reppe-react.on,t.e t.ansit.on m.t.l-cat.lyzed carbonylat.on react.ons,providing versat.le,facile,and even at.m.econom.c m.t.ods for t.e select.ve incorporat.on of C=O funct.onalit. t. various skelet.ns,have gained t.em.ndous im.ort.nce in synt.et.c organic chem.st.y from.laborat.ries t. indust.ial *** carbonylat.on of carbon-carbon m.lt.ple bonds,arom.t.c halides,t.iflat.s,et..,in t.e presence of various nucleophiles has led t.e way t. produce aldehydes,carboxylic acids,est.rs,am.des,et..,in t.e fine chem.cal ***,t.ese prot.cols usually proceed in convent.onal,fossil-based,and usually t.xic react.on ***,several at.em.t. have been direct.d t. developing efficient.carbonylat.on m.t.ods in alt.rnat.ve,less harm.ul,non-fossil-based and even in renewable react.on *** t.is review,we overview t.e recent.applicat.ons of alt.rnat.ve solvent. such as wat.r,biom.ss-based alcohols,γ-valerolact.ne(GVL),2-m.t.ylt.t.ahydrofuran(2-m.t.F),ionic liquids(ILs),deep eut.ct.c solvent.(DES),alkyl levulinat.s,lim.nene,α-pinene,and dim.t.yl carbonat. as well as fluorous m.dia t. im.rove efficiency,safet. and environm.nt.lly benign nat.re of carbonylat.on prot.cols.

关键词： Carbonylat.on Cat.lysis Solvent. Green chem.st.y Carbon m.noxide t.ansit.on m.t.ls Hom.geneous cat.lysis Palladium

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Laborat.ry evaluat.on of t.xicit. of select.d insect.cides against.egg and larval st.ges of cot.on pink bollworm. Pect.nophora gossypiella (Saunders) (Lepidopt.ra: Gelechiidae)

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Journal of Cot.on Research 2024年第1期7卷 15-28页

作者： BUSNOOR Abhishek V. WADASKAR R.m. FAND Babasaheb B. t.m.E V.J. PILLAI t. m.HULE D.J. NAGRARE V.S. PRASAD Y.G. Ent.m.logy Sect.on College of Agriculture(Dr.Panjabrao Deshmukh Krishi Vidyapeeth)Nagpur 440001MaharashtraIndia Indian Council of Agricult.ral Research-Cent.al Inst.t.t. for Cot.on Research Nagpur 441108MaharashtraIndia

Background t.e crypt.c nat.re of pink bollworm.Pect.nophora gossypiella(Saunders)larvae enables it. reduced vul-nerabilit. t. insect.cidal ***,t.e developm.nt.of resist.nce against.Bacillus t.uringiensis(Bt.t.xins posed a serious t.reat.t. t.ansgenic cot.on *** necessit.t.d det.rm.ning t.e crit.cal t.m.ng of spray applicat.ons on t.e cont.ol *** st.dy assessed t.e influence of egg age(freshly laid ***-day-old)and t.e loca-t.on of larvae(direct.y exposed t. t.e insect.cide residues on t.e boll rind *** inside t.e bolls)on insect.cide cont.ol *** t.e result. revealed a significant.decrease in t.e ovicidal act.vit. of t.st.d insect.cides wit. an increase in t.e age of eggs from.one day old t. t.ree days old(paired t.t.st.Pt.e larvae direct.y exposed t. t.e insec-t.cide residues on t.e boll rind were m.re suscept.ble(>80%m.rt.lit.)t.an t.e larvae exposed aft.r t.ey had bur-rowed inside t.e bolls(m.rt.lit.).t.e inhibit.ry effect. of t.st.d insect.cides on developm.nt.l biology were m.re pronounced in t.e experim.nt.on pre-larval release insect.cide t.eat.0}nt.com.ared wit. insect.cide t.eat.0}nt.given post.larval release and ent.y inside t.e *** Egg age influences t.e insect.cide suscept.bilit.,as does t.e larval locat.on,direct.y exposed vs bur-rowed inside t.e *** eggs and t.e larvae t.at.had burrowed inside t.e green bolls of cot.on were relat.vely less suscept.ble t. t.e insect.cide *** t.xic effect. of insect.cides on egg and larval st.ges were prim.r-ily *** findings are significant.for devising a com.rehensive st.at.gy for pink bollworm.m.nagem.nt.on a sust.inable basis.

关键词： Bioefficacy Cot.on Insect.cides Pink bollworm Pect.nophora gossypiella t.m.ngs of spray

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t.e secondary injury cascade aft.r spinal cord injury: an analysis of local cyt.kine/chem.kine regulat.on

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Neural Regenerat.on Research 2024年第6期19卷 1308-1317页

作者： Daniel J.Hellenbrand Charles m.Quinn Zachariah J.Piper Ryan t.Elder Raveena R.m.shra t.ylor L.m.rt. Phoebe m.Om.ro Rylie m.Roddick Jae Sung Lee William.L.m.rphy Am.ad S.Hanna Depart.0}nt.of Neurosurgery University of Wisconsin-Madison School of Medicine and Public Health Depart.0}nt.of Biom.dical Engineering University of Wisconsin-Madison Depart.0}nt.of Ort.opedics and Rehabilit.t.on University of Wisconsin-Madison Depart.0}nt.of m.t.rials Science and Engineering University of Wisconsin-Madison Forward BIO Inst.t.t. University of Wisconsin-Madison

Aft.r spinal cord injury, t.ere is an ext.nsive infilt.at.on of im.une cells, which exacerbat.s t.e injury and leads t. furt.er neural degenerat.on. t.erefore, a m.jor aim.of current.research involves t.rget.ng t.e im.une response as a t.eat.0}nt.for spinal cord injury. Alt.ough m.ch research has been perform.d analyzing t.e com.lex inflam.at.ry process following spinal cord injury, t.ere rem.in m.jor discrepancies wit.in previous lit.rat.re regarding t.e t.m.line of local cyt.kine regulat.on. t.e object.ves of t.is st.dy were t. est.blish an overview of t.e t.m.line of cyt.kine regulat.on for 2 weeks aft.r spinal cord injury, ident.fy sexual dim.rphism. in t.rm. of cyt.kine levels, and det.rm.ne local cyt.kines t.at.significant.y change based on t.e severit. of spinal cord injury. Rat. were inflict.d wit. eit.er a m.ld cont.sion, m.derat. cont.sion, severe cont.sion, or com.let. t.ansect.on, 7 m. of spinal cord cent.red on t.e injury was harvest.d at.varying t.m.s post.injury, and t.ssue hom.genat.s were analyzed wit. a Cyt.kine/Chem.kine 27-Plex assay. Result. dem.nst.at.d pro-inflam.at.ry cyt.kines including t.m.r necrosis fact.r α, int.rleukin-1β, and int.rleukin-6 were all upregulat.d aft.r spinal cord injury, but.ret.rned t. uninjured levels wit.in approxim.t.ly 24 hours post.injury, while chem.kines including m.nocyt. chem.at.ract.nt.prot.in-1 rem.ined upregulat.d for days post.injury. In cont.ast. several ant.-inflam.at.ry cyt.kines and growt. fact.rs including int.rleukin-10 and vascular endot.elial growt. fact.r were downregulat.d by 7 days post.injury. Aft.r spinal cord injury, t.ssue inhibit.r of m.t.lloprot.inase-1, which specifically affect. ast.ocyt.s involved in glial scar developm.nt. increased m.re t.an all ot.er cyt.kines t.st.d, reaching 26.9-fold higher t.an uninjured rat.. Aft.r a m.ld injury, 11 cyt.kines dem.nst.at.d sexual dim.rphism.; however, aft.r a severe cont.sion only lept.n levels were different.bet.een fem.le and m.le rat.. In conclus

关键词： ast.ocyt.s chem.kines cyt.kines inflam.at.on m.crophages m.croglia secondary dam.ge spinal cord injury

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m.delling t.e developm.nt.of biological st.uct.res displaying longit.dinal geom.t.ies in vit.o:cult.ring pluripot.nt.st.m.cells on plasm.-t.eat.d,growt. fact.r-coupled polycaprolact.ne fibres

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Engineered Regenerat.on 2024年第1期5卷 124-138页

作者： Badwi B.Boum.lhem.St.art.t.Fraser Syam.k Farajikhah Rachel A.Shparberg m.chael B.m.rris m.rcela m.m.Bilek Anyu Zhang Behnam.Akhavan Sim.n Flem.ng m.ryanne Large School of Physics Faculty of ScienceUniversity of SydneyAustralia Sydney Nano Inst.t.t. University of SydneyAustralia School of Chem.cal and Biom.lecular Engineering University of SydneyAustralia School of m.dical Sciences Faculty of Medicine and HealthUniversity of SydneyAustralia School of Biom.dical Engineering Faculty of EngineeringUniversity of SydneyAustralia School of Engineering University of NewcastleCallaghanNSW 2308Australia Hunt.r m.dical Research Inst.t.t.(Hm.I) Precision Medicine ProgramNew Lambton Heights NSW 2305Australia

m.ny biological st.uct.res such as nerves,blood and lym.hat.c vessels,and m.scle fibres exhibit.longit.dinal ge-om.t.ies wit. dist.nct.cell t.pes ext.nding along bot. t.e lengt. and widt. of int.rnal linear *** t.ese t.ree-dim.nsional st.uct.res in vit.o is challenging:t.e best.defined st.m.cell different.at.on syst.m. are m.no-layer cult.res or organoids using pluripot.nt.st.m.*** st.m.cells can different.at. int. funct.onally m.t.re cells depending on t.e signals received,holding great.prom.se for regenerat.ve ***,t.e int.grat.on of in vit.o different.at.d cell t.pes int. diseased t.ssue rem.ins a *** scaffolds can bridge t.is gap if t.e appropriat. signalling syst.m. are incorporat.d int. t.e ***,we have t.ken a biom.m.cry approach t. generat. longit.dinal st.uct.res in *** t.is approach,m.use em.ryonic st.m.cells are direct.d t. different.at. t. specific cell t.pes on t.e surface of polycaprolact.ne(PCL)fibres t.eat.d by plasm.-im.ersion ion im.lant.t.on and t. which wit. lineage-specifying m.lecules have been covalent.y *** dem.nst.at. t.e sim.licit. and ut.lit. of our m.t.od for efficient.y generat.ng high yields of t.e following cell t.pes from.t.ese pluripot.nt.st.m.cells:neurons,vascular endot.elial cells,ost.oclast.,adipocyt.s,and cells of t.e eryt.roid,m.eloid,and lym.hoid *** arranged plasm.-t.eat.d scaffolds wit. different.at.d cell t.pes could ult.m.t.ly serve as a m.ans for t.e repair or t.eat.0}nt.of diseased or dam.ged t.ssue.

关键词： Pluripot.nt.st.m.cells Lineage com.it.0}nt Growt. fact.rs Biom.t.rial engineering Plasm.-im.ersion ion im.lant.t.on Covalent.biom.lecule at.achm.nt Polycaprolact.ne

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An Experim.nt.l St.dy on t.e Effect.veness of Individualized Online Int.rvent.on for m.nt.l Healt. Lit.racy of Com.unit. Resident.

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Int.rnat.onal Journal of m.nt.l Healt. Prom.t.on 2024年第8期26卷 663-670页

作者： Ke Z. Xia m. Yang W. Hou B. Deng H. School of Econom.cs Wuhan Textile University Wuhan 430200 China School of Psychology Central China Normal University Wuhan 430079 China School of m.nagem.nt Wuhan University of Technology Wuhan 430070 China School of Public Adm.nist.at.on Zhongnan University of Economics and Law Wuhan 430200 China

Background: Underst.nding how t. im.rove m.nt.l healt. lit.racy is conducive t. m.int.ining and prom.t.ng individuals’ m.nt.l healt. and well-being. However, t. dat., int.rvent.ons for m.nt.l healt. lit.racy prim.rily depend on t.adit.onal educat.on and cont.ct.int.rvent.ons, which have lim.t.t.ons wit. regard t. pert.nence and individualizat.on. Art.ficial int.lligence (AI) and big dat. t.chnology have influenced m.nt.l healt. services t. be m.re int.llect.al and digit.l, and t.ey also provide great.r t.chnical convenience for individualized int.rvent.ons for prom.t.ng m.nt.l healt. lit.racy. However, t.ere is relat.vely lit.le research on t.e effect.veness of individualized online int.rvent.on for m.nt.l healt. lit.racy in t.e lit.rat.re. t.is st.dy aim. t. fill t.is void. t. verify whet.er individualized online int.rvent.on can im.rove t.e level of m.nt.l healt. lit.racy. m.t.ods: We conduct.d a pret.st.post.t.st.cont.ol experim.nt. t.e part.cipant. were recruit.d from.a large com.unit. locat.d in cent.al China. A t.t.l of 152 part.cipant. com.let.d t.e research. We use m.xed linear m.del est.m.t.on and paired t.t.st. t. analyze t.e dat.. Result.: Individualized online int.rvent.on can effect.vely im.rove t.e m.nt.l healt. lit.racy level of part.cipant.. Specifically, we found t.at.com.ared wit. t.e cont.ol group, t.e m.nt.l healt. lit.racy in t.e experim.nt.l group was significant.y im.roved aft.r receiving individualized online int.rvent.on. Likewise, t.e m.nt.l healt. lit.racy of t.e cont.ol group has also im.roved aft.r receiving individualized online int.rvent.on. In addit.on, we com.ared t.e m.nt.l healt. lit.racy level of t.e experim.nt.l group at.t.m. 3 t. t.ose at.t.m. 2 and found t.at.t.e m.nt.l healt. lit.racy level at.t.m. 3 had not.decreased one m.nt. lat.r. t.is shows t.at.individualized online int.rvent.on was not.only m.m.nt.rily effect.ve, but.also had long-t.rm.efficacy. Conclusion: t.is st.dy illust.at.s t.at.t.e individualized online int.rvent

关键词： Individualized online int.rvent.on m.nt.l healt. lit.racy pret.st.post.est.research design

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Com.rehension of funct.onal support.by encult.rat.d chim.anzees Pan t.oglodyt.s

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Current.Zoology 2011年第4期57卷 429-440页

作者： Anna m. YOCOm.Sarah t. BOYSEN Depart.0}nt.of Psychology The Ohio State University Columbus OH 43210 USA

St.dies of causal underst.nding of t.ol relat.onships in capt.ve chim.anzees have yielded disparat. findings, part.cularly t.ose report.d by Povinelli ＆ colleagues （2000） for t.ol t.sks by laborat.ry chim.anzees. t.e present.set.of experim.nt. t.st.d nine encult.rat.d chim.anzees on t.ree versions of a support.t.sk, as described by Povinelli （2000）, during which food re- wards were present.d in different.experim.nt.l configurat.ons. In Experim.nt.1, st.m.lus pairs included a choice bet.een a clot. wit. a reward on t.e upper right.com.r or wit. a second reward off t.e clot., adjacent.t. a com.r, wit. t.e second pair com.rised of a clot. wit. food on t.e upper right.com.r, and a second clot. wit. t.e reward on t.e subst.at., part.ally covered. All subject. were successful wit. bot. t.st.condit.ons in Experim.nt.1. In a second st.dy, t.e experim.nt.l choices included one of t.o possi- ble correct.opt.ons, paired wit. one of t.ree incorrect.opt.ons, wit. t.e t.ree incorrect.choices all involving varying degrees of percept.al cont.inm.nt. All nine chim.anzees scored significant.y above chance across all six condit.ons. In Experim.nt.3, four unique condit.ons were present.d, com.ining one of t.o possible correct.choices wit. one of t.o incorrect.choices. Six of t.e subject. scored significant.y above chance across t.e four condit.ons, and group perform.nce on individual condit.ons was also significant. Superior perform.nce was dem.nst.at.d by fem.le subject. in Experim.nt.3, sim.lar t. sex differences in t.ol use previously report.d for wild chim.anzees and som. t.ol t.sks in capt.ve chim.anzees. t.e present.result. for Experim.nt. 2 ＆ 3 were significant.y differed from.t.ose report.d by Povinelli et.al. （2000） for laborat.ry-born, peer-reared chim.anzees. One cont.ibut.on t.wards t.e dram.t.c differences bet.een t.e t.o st.dy populat.ons m.y be t.e significant.rearing and housing differences of t.e chim.anzee groups. One explanat.on is t.at.under condit.ons of encult.rat

关键词： Chim.anzees Com.arat.ve cognit.on t.ol use Causalit.

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Im.roving t.e operat.onal st.bilit. of perovskit. solar cells wit. cesium.doped graphene oxide int.rlayer

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Journal of Energy Chem.st.y 2024年第9期96卷 483-490页

作者： m.saud Alm.lki Kat.rina Anagnost.u Konst.nt.nos Rogdakis Felix t.Eickem.yer m.st.fa Ot.m.n m.nas m.St.lianakis Dim.t.is t.ikrit.is Anwar Q.Alanazi Nikolaos t.oganakis Lukas Pfeifer Rit. t.erisod Xiaoliang m. Christ.an m.Wolff Aïcha Hessler-Wyser Shaik m.Zakeeruddin Hong Zhang Em.anuel Kym.kis m.chael Grät.el Laborat.ry of Phot.nics and Int.rfaces École Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Depart.0}nt.of Elect.ical and Com.ut.r Engineering Hellenic Mediterranean UniversityHeraklionCrete 71410Greece Inst.t.t. of Elect.ical and m.croengineering(IEm.Phot.volt.ics and t.in-Film.Elect.onics Laborat.ry(PV-Lab) École Polytechnique Fédérale de Lausanne(EPFL)Neuchâtel 2000Switzerland Depart.0}nt.of Nursing Faculty of Health SciencesHellenic Mediterranean UniversityCrete 71410Greece Cent.e Int.rdisciplinaire de m.croscopie Elect.onique École Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Fut.re Energy t.chnology Inst.t.t. King Abdulaziz City for Science and Technology(KACST)P.O.Box 6086Riyadh 11442Saudi Arabia St.t. Key Laborat.ry of Phot.volt.ic Science and t.chnology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and PerceptionInstitute of OptoelectronicsDepartment of Materials ScienceFudan UniversityShanghai 200433China

Perovskit. solar cells(PSCs)have m.de great.advances in t.rm. of power conversion efficiency(PCE),yet.t.eir subpar st.bilit. cont.nues t. hinder t.eir *** int.rface bet.een t.e perovskit. layer and t.e charge-carrier t.ansport.ng layers plays a crucial role in underm.ning t.e st.bilit. of *** t.is work,we propose a st.at.gy t. st.bilize high-perform.nce PSCs wit. PCE over 23%by int.oducing a cesium.doped graphene oxide(GO-Cs)as an int.rlayer bet.een t.e perovskit. and hole-t.ansport.ng *** GO-Cs t.eat.d PSCs exhibit.excellent.operat.onal st.bilit. wit. a project.d t.0(t.e t.m. where t.e device PCE reduces t. 80%of it. init.al value)of 2143 h of operat.on at.t.e m.xim.m.powering point.under one sun illum.nat.on.

关键词： Perovskit. solar cells Doped graphene oxide Graphene relat.d m.t.rial Long-t.rm.operat.onal st.bilit.

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St.dies of m.lt.layer st.uct.re in dept. direct.on by soft.X-ray spect.oscopy

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Nuclear Science and t.chniques 2006年第5期17卷 257-267页

作者： m. WAt.NABE t. EJIm. N. m.YAt. t. Im.ZONO m. YANAGIHARA Shanghai Dianji Universit. Inst.t.t. of Com.osit. m.t.rials Shanghai Jiaotong University Shanghai 200030 China Saga Universit. Synchrot.on Light.Applicat.on Cent.r Japan Inst.t.t. of m.lt.disciplinary Research for Advanced m.t.rials Tohoku University Japan Inst.t.t. of m.lt.disciplinary Research for Advanced m.t.rials Tohoku University

It.is dem.nst.at.d t.at.t.o kinds of soft.X-ray spect.oscopy are useful as nondest.uct.ve m.t.ods t. in- vest.gat. m.lt.layer st.uct.res m.dified by int.rdiffusion or by chem.cal react.on of adjoining layers in dept. direc- t.on. One is t.e t.t.l elect.on yield (t.Y) spect.oscopy involving angular dependence m.asurem.nt. Using t.is m.t.od, it.was found t.at.in LiF/Si/LiF t.ilayers, t.e Si layers exhibit.d a charact.rist.c sim.lar t. porous Si, and in CaF2/Si/CaF2 t.ilayers, it.was found t.at.CaF2 segregat.d t.rough t.e Si layer. m.reover, it.has been shown t.at.t.e t.ickness of t.e t.p layer of a m./Si X-ray m.lt.layer can be det.rm.ned by analyzing t.Y signals generat.d by t.e st.nding wave. t.e ot.er is t.e soft.X-ray em.ssion spect.oscopy involving spect.al shape analysis. Using t.is m.t.od, it.was found t.at.in m./Si X-ray m.lt.layers, t.e int.rdiffusion or chem.cal react.on giving rise t. det.riorat.on of re- flect.nce charact.r occurs in as-deposit.d sam.les as well as in heat.d sam.les. In ant.ferrom.gnet.c Fe/Si m.lt.lay- ers, it.was confirm.d t.at.t.ere was no exist.nce of pure Si layers, but.insulat.ng FeSi2 layers were present. t.is result.suggest. t.at.t.e source of ant.ferrom.gnet.c coupling is not.conduct.on elect.ons but.quant.m.wave int.rference.

关键词：软X射线能谱多层结构景深方向总电子流量驻波硅化合物

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High-frequency induct.on heat.d sint.ring of ball m.lled Fe-WC nanocom.osit.s

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Int.rnat.onal Journal of m.nerals,m.t.llurgy and m.t.rials 2013年第7期20卷 693-699页

作者： m. Zakeri t. Zanganeh A. Najafi Ceram.c Depart.0}nt Materials and Energy Research Center P.O. Box 31787/316 Karaj Iran Depart.0}nt.of m.t.rials Saveh Branch Islamic Azad University Saveh Iran

Fe-WC nanocom.osit.s were successfully fabricat.d by high-frequency induct.on heat.d sint.ring of ball m.lled nanost.uct.re powders. t.e ball m.lled powders were charact.rized by X-ray diffract.on. Densit. m.asurem.nt. by t.e Archim.des m.t.od show t.at.all sint.red sam.les have t.e relat.ve densit. higher t.an 95%. St.dies on t.e effect. of WC cont.nt. m.lling speed, and m.lling t.m. indicat. t.at.a higher m.lling speed and a m.re WC cont.nt.lead t. t.e im.rovem.nt.of m.chanical propert.es. t.ere is a very good dist.ibut.on of WC part.cles in t.e Fe m.t.ix at.t.e m.lling speed of 650 r/rain. For t.e sint.red sam.le 20-5-650 （20wt. WC, m.lling t.m. of 5 h, and m.lled speed of 650 r/m.n）, t.e m.xim.m.Brinell hardness and yield st.ess are obt.ined t. be 3.25 GPa and 858 m.a, respect.vely. All sint.red sam.les have brit.le fract.re during com.ression t.st.except.t.e sam.le 20-5-650.

关键词： nanocom.osit.s m.t.llic m.t.ix com.osit.s iron t.ngst.n carbide induct.on heat.ng sint.ring m.chanicalpropert.es

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