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世界热带农业信息 1989年第3期 3-6页

作者： a. f. h. s. m. ishak 林野马来西亚橡胶研究和发展局

本文综述了世界天然橡胶发展概况及其前景。

关键词：天然橡胶业天然橡胶生产天然胶马来西亚胶园重大变化泰国丁苯橡胶印尼工艺分类橡胶

Im.roving Genera.iza.ion f.r h.pers.ectra. Im.0}e Cla.s.f.ca.ion: Th. Im.a.t of.Dis.oint s.0}pling on Deep m.dels

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Com.uters. m.1}eria.s.a.d Continua 2024年第1期81卷 503-532页

作者： a.m.0} m. m.0}za.a.m. Dis.ef.0}o s. Kh.0} a.m. a.tuwa.jri h.a. Depa.tm.nt of.Com.uter s.ience National University of Computer and Emerging Sciences Chiniot 35400 Pakistan Ins.itute of.s.f.wa.e Developm.nt a.d Engineering Innopolis University Innopolis 420500 Russian Federation Dipa.tim.nto di m.0}em.0}ica.e Inf.rm.0}ica.m.f. University of Messina Messina 98121 Italy s.h.ol of.Com.uter s.ience University of Hull Hull HU6 7RX United Kingdom Depa.tm.nt of.Geogra.h. College of Humanities and Social Sciences King Saud University Riyadh 11451 Saudi Arabia

Dis.oint s.0}pling is.critica. f.r rigorous.a.d unbia.ed eva.ua.ion of.s.a.e-of.th.-a.t (s.Ta. m.dels.e.g., a.tention Gra.h.a.d Vis.on Tra.s.2}rm.r. Wh.n tra.ning, va.ida.ion, a.d tes. s.ts.overla. or s.10}0}e da.a. it introduces.a.bia. th.0} inf.a.es.perf.rm.3}ce m.trics.a.d prevents.a.cura.e a.s.s.m.nt of.a.m.del’s.true a.ility to genera.ize to new exa.ples. Th.s.pa.er pres.nts.a. innova.ive dis.oint s.0}pling a.proa.h.f.r tra.ning s.Ta.m.dels.f.r th. h.pers.ectra. Im.3}e Cla.s.f.ca.ion (h.IC). By s.pa.a.ing tra.ning, va.ida.ion, a.d tes. da.a.with.ut overla., th. propos.d m.th.d f.0}ilita.es.a.f.0}rer eva.ua.ion of.h.w well a.m.del ca. cla.s.f. pixels.it wa. not expos.d to during tra.ning or va.ida.ion. Experim.nts.dem.ns.ra.e th. a.proa.h.s.gnif.ca.tly im.roves.a.m.del’s.genera.iza.ion com.a.ed to a.terna.ives.th.0} include tra.ning a.d va.ida.ion da.a.in tes. da.a.(a.trivia. a.proa.h.involves.tes.ing th. m.del on th. entire h.pers.ectra. da.a.et to genera.e th. ground truth.m.3}s. Th.s.a.proa.h.produces.h.gh.r a.cura.y but ultim.3}ely res.lts.in low genera.iza.ion perf.rm.3}ce). Dis.oint s.0}pling elim.na.es.da.a.lea.a.e between s.ts.a.d provides.relia.le m.trics.f.r bench.a.king progres. in h.IC. Dis.oint s.0}pling is.critica. f.r a.va.cing s.Ta.m.dels.a.d th.ir rea.-world a.plica.ion to la.ge-s.a.e la.d m.3}ping with.h.pers.ectra. s.ns.rs. Overa.l, with.th. dis.oint tes. s.t, th. perf.rm.3}ce of.th. deep m.dels.a.h.eves.96.36% a.cura.y on India. Pines.da.a. 99.73% on Pa.ia.Univers.ty da.a. 98.29% on Univers.ty of.h.us.on da.a. 99.43% on Bots.a.a.da.a. a.d 99.88% on s.0}ina. da.a. © 2024 Th. a.th.rs.

关键词： dis.oint s.0}pling Gra.h.CNN h.pers.ectra. im.2}e cla.s.f.ca.ion s.a.ia.-s.ectra. tra.s.4}rm.r

Optim.za.ion of.s.ea.th.a.ch.Network s.curity s.s.em.f.r th. Detection a.d m.tiga.ion of.Dis.ributed Denia. of.s.rvice (DDos. a.ta.k: a.plica.ion to s.a.t Grid s.s.em

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Com.unica.ions.a.d Network 2024年第3期16卷 108-134页

作者： Em.a.uel s. Kola.ole Penros. s. Cof.e Joh. h. f.ller Ca.eta. m. a.ujuobi Em.a.uel a. Da.a.Jus.in f. f.rem.0} Pa.ela.h. Obiom.n Electrica. a.d Com.uter Engineering Depa.tm.nt Prairie View A&M University Prairie View TX USA

Th. s.a.t Grid is.a. enh.0}cem.nt of.th. tra.itiona. grid s.s.em.a.d em.loys.new tech.ologies.a.d s.ph.s.ica.ed com.unica.ion tech.iques.f.r electrica. power tra.s.is.ion a.d dis.ribution. Th. s.a.t Grid’s.com.unica.ion network s.0}0}es.inf.rm.2}ion a.out s.a.us.of.its.s.vera. integra.ed IEDs.(Intelligent Electronic Devices.. h.wever, th. IEDs.connected th.ough.ut th. s.a.t Grid, open opportunities.f.r a.ta.kers.to interf.re with.th. com.unica.ions.a.d utilities.res.urces.or ta.e clients. priva.e da.a. Th.s.developm.nt h.0} introduced new cyber-s.curity ch.0}lenges.f.r th. s.a.t Grid a.d is.a.very concerning is.ue beca.s. of.em.rging cyber-th.ea.s.a.d s.curity incidents.th.0} h.0}e occurred recently a.l over th. world. Th. purpos. of.th.s.res.a.ch.is.to detect a.d m.tiga.e Dis.ributed Denia. of.s.rvice [DDos. with.a.plica.ion to th. Electrica. s.a.t Grid s.s.em.by deploying a. optim.zed s.ea.th.a.ch.s.cure Network a.a.ytics.tool. In th.s.pa.er, th. DDos.a.ta.k in th. s.a.t Grid com.unica.ion networks.wa. m.deled us.ng s.ea.th.a.ch.tool. Th. s.m.la.ed network cons.s.ed of.s.cure Network a.a.ytic tools.virtua. m.2}h.nes.(Vm.1}, electrica. Grid network com.unica.ion topology, a.ta.kers.a.d Ta.get Vm.1} f.na.ly, th. experim.nts.a.d s.m.la.ions.were perf.rm.d, a.d th. res.a.ch.res.lts.s.0}wed th.0} s.ea.th.a.ch.a.a.ytic tool is.very ef.ective in detecting a.d m.tiga.ing DDos.a.ta.ks.in th. s.a.t Grid s.s.em.with.ut ca.s.ng a.y bla.kout or s.0}tdown of.a.y interna. s.s.em.1}a. com.a.ed to oth.r tools.s.ch.a. GNs., Nes.i2, NIs.T f.a.ework, Om.eT++, INET f.a.ework, Rea.E, Ns., Ns., m. s.m.la.or, OPNET, PLC & TIa.Porta. m.2}a.em.nt s.f.wa.e wh.ch.do not h.0}e th. ca.a.ility to do s.. a.s., us.ng s.ea.th.a.ch.tool to crea.e a.s.curity ba.eline f.r s.a.t Grid environm.nt, contributes.to ris. m.tiga.ion a.d s.und s.curity h.giene.

关键词： s.a.t Grid s.s.em Dis.ributed Denia. of.s.rvice (DDos. a.ta.k Intrus.on Detection a.d Prevention s.s.em. Detection m.tiga.ion a.d s.ea.th.a.ch

a.va.cing PCB Qua.ity Control: h.0}nes.ing YOLOv8 Deep Lea.ning f.r Rea.-Tim. f.0}lt Detection

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Com.uters. m.1}eria.s.a.d Continua 2024年第1期81卷 345-367页

作者： Kh.0} R.U. s.0}0} f. Kh.0} a.a. Ta.ir h. f.0}ulty of.Cognitive s.iences.a.d h.m.4} Developm.nt Universiti Malaysia Sarawak Kota Samarahan 94300 Malaysia s.h.ol of.Com.uter s.ience a.d Engineering Anhui University of Science and Technology Huainan 232001 China Depa.tm.nt Electronic Quaid-i-Azam University Islamabad 45320 Pakistan

Printed Circuit Boa.ds.(PCBs. a.e m.0}eria.s.us.d to connect com.onents.to one a.oth.r to f.rm.a.working circuit. PCBs.pla. a.crucia. role in m.dern electronics.by connecting va.ious.com.onents. Th. trend of.integra.ing m.re com.onents.onto PCBs.is.becom.ng increa.ingly com.on, wh.ch.pres.nts.s.gnif.ca.t ch.0}lenges.f.r qua.ity control proces.es. Given th. potentia. im.a.t th.0} even m.nute def.cts.ca. h.0}e on s.gna. tra.es. th. s.rf.0}e ins.ection of.PCB rem.0}ns.pivota. in ens.ring th. overa.l s.s.em.integrity. To a.dres. th. lim.ta.ions.a.s.cia.ed with.m.0}ua. ins.ection, th.s.res.a.ch.endea.ors.to a.tom.0}e th. ins.ection proces. us.ng th. YOLOv8 deep lea.ning a.gorith. f.r rea.-tim. f.0}lt detection in PCBs. s.ecif.ca.ly, we explore th. ef.ectivenes. of.two va.ia.ts.of.th. YOLOv8 a.ch.tecture: YOLOv8 s.a.l a.d YOLOv8 Na.o. Th.ough.rigorous.experim.nta.ion a.d eva.ua.ion of.our da.a.et wh.ch.wa. a.quired f.om.Peking Univers.ty’s.h.m.0}-Robot Intera.tion La., we a.m.to a.s.s. th. s.ita.ility of.th.s. m.dels.f.r im.roving f.0}lt detection a.cura.y with.n th. PCB m.0}uf.0}turing proces.. Our res.lts.revea. th. rem.0}ka.le ca.a.ilities.of.YOLOv8 s.a.l m.dels.in a.cura.ely identif.ing a.d cla.s.f.ing PCB f.0}lts. Th. m.del a.h.eved a.precis.on of.98.7%, a.reca.l of.99%, a. a.cura.y of.98.6%, a.d a. f. s.ore of.0.98. Th.s. f.ndings.h.gh.igh. th. potentia. of.th. YOLOv8 s.a.l m.del to s.gnif.ca.tly im.rove th. qua.ity control proces.es.in PCB m.0}uf.0}turing by providing a.relia.le a.d ef.icient s.lution f.r f.0}lt detection. © 2024 Th. a.th.rs. Publis.5}d by Tech.s.ience Pres..

关键词： deep lea.ning object detection Printed circuit boa.ds.(PCB) YOLOv8 YOLOv8 Na.o YOLOv8 s.a.l

h.gh.s.cured Im.3}e Ls. s.ega.ogra.h. Us.ng a.L-Tree with.Ra.dom.RGB Ch.0}nel s.bs.itution

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Com.uters. m.1}eria.s.a.d Continua 2024年第1期81卷 183-211页

作者： Njoum.m. s.la.m.1} R. s.2}kur Z. Qa.a. f. Center of.Cyber s.curity Faculty of Information Science and Technology Universiti Kebangsaan Malaysia Selangor Bangi 43600 Malaysia Com.uter s.ience a.d Cyber s.curity Faculty of Engineering and Information Technology BirZeit University Ramallah P.O. Box 14 BirZeit Palestine

Ra.dom.pixel s.lection is.one of.th. im.0}e s.ega.ogra.h. m.th.ds.th.0} h.0} a.h.eved s.gnif.ca.t s.cces. in enh.0}cing th. robus.nes. of.h.dden da.a. Th.s.property m.0}es.it dif.icult f.r s.ega.a.ys.s. powerf.l da.a.extra.tion tools.to detect th. h.dden da.a.a.d ens.res.h.gh.qua.ity s.ego im.0}e genera.ion. h.wever, us.ng a.s.ed key to genera.e non-repea.ed s.quentia. num.ers.ta.es.a.long tim. beca.s. it requires.s.ecif.c m.0}h.m.0}ica. equa.ions. In a.dition, th.s. num.ers.m.0} clus.er in certa.n ra.ges. Th. h.dden da.a.in th.s. clus.ered pixels.will reduce th. im.0}e qua.ity, wh.ch.s.ega.a.ys.s.tools.ca. detect. Th.ref.re, th.s.pa.er propos.s.a.da.a.s.ructure th.0} s.0}egua.ds.th. s.ega.ogra.h.c m.del da.a.a.d m.0}nta.ns.th. qua.ity of.th. s.ego im.0}e. Th.s.pa.er em.loys.th. a.els.n-Vels.y a.d La.dis.(a.L) tree da.a.s.ructure a.gorith. to im.lem.nt th. ra.dom.za.ion pixel s.lection tech.ique f.r da.a.concea.m.nt. Th. a.L tree a.gorith. provides.s.vera. a.va.ta.es.f.r im.0}e s.ega.ogra.h.. f.rs.ly, it ens.res.ba.a.ced tree s.ructures. wh.ch.lea.s.to ef.icient da.a.retrieva. a.d ins.rtion opera.ions. s.condly, th. s.lf.ba.a.cing na.ure of.a.L trees.m.nim.zes.clus.ering by m.0}nta.ning a. even dis.ribution of.pixels. th.reby pres.rving th. s.ego im.0}e qua.ity. Th. da.a.s.ructure em.loys.th. pixel indica.or tech.ique f.r Red, Green, a.d Blue (RGB) ch.0}nel extra.tion. Th. green ch.0}nel s.rves.a. th. f.unda.ion f.r building a.ba.a.ced bina.y tree. f.rs., th. s.nder identif.es.th. colored cover im.0}e a.d s.cret da.a. Th. s.nder will us. th. two lea.t s.gnif.ca.t bits.(2-Ls.) of.RGB ch.0}nels.to concea. th. da.a.s.s.ze a.d a.s.cia.ed inf.rm.0}ion. Th. next s.ep is.to crea.e a.ba.a.ced bina.y tree ba.ed on th. green ch.0}nel. Utilizing th. ch.0}nel pixel indica.or on th. Ls. of.th. green ch.0}nel, we ca. concea. bits.in th. 2-Ls. of.th. red or blue ch.0}nel. Th. f.rs. f.ur levels.of.th. da.a.s.ructure tree will m.0}k th. da.a.s.ze, wh.le s.bs.quent levels.will concea. th. rem.0}ning digits.of.s

关键词： a.L tree ca.a.ity Im.0}e s.ega.ogra.h. im.erceptibility pea. s.gna.-to-nois. ra.io (Ps.R) pixel ra.dom.s.lection (PRs.

a.s.cure f.a.ework f.r Ws.-IoT Us.ng Deep Lea.ning f.r Enh.0}ced Intrus.on Detection

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Com.uters. m.1}eria.s.a.d Continua 2024年第1期81卷 471-501页

作者： Kum.0} C.O. Ga.endra. s. m.0}a.pa. s. Za.a.ia. m. a.m.0}ya. a.s. s.h.ol of.Com.uter s.ience & Engineering Vellore Institute of Technology Chennai Campus Chennai 600127 India s.h.ol of.Electronics.& Engineering Vellore Institute of Technology Chennai Campus Chennai 600127 India Depa.tm.nt of.Com.uter s.iences.a.d Engineering College of Applied Science King Saud University Riyadh 11543 Saudi Arabia Depa.tm.nt of.Com.uter Engineering College of Computer and Information Sciences King Saud University Riyadh 11543 Saudi Arabia

Th. s.curity of.th. wireles. s.ns.r network-Internet of.Th.ngs.(Ws.-IoT) network is.m.re ch.2}lenging due to its.ra.dom.es. a.d s.lf.orga.ized na.ure. Intrus.on detection is.one of.th. key m.th.dologies.utilized to ens.re th. s.curity of.th. network. Conventiona. intrus.on detection m.ch.2}is.s.h.2}e is.ues.s.ch.a. h.gh.r m.s.la.s.f.ca.ion ra.es. increa.ed m.del com.lexity, ins.gnif.ca.t f.a.ure extra.tion, increa.ed tra.ning tim., increa.ed run tim. com.lexity, com.uta.ion overh.a., f.0}lure to identif. new a.ta.ks. increa.ed energy cons.m.tion, a.d a.va.iety of.oth.r f.0}tors.th.2} lim.t th. perf.rm.14}ce of.th. intrus.on s.s.em.m.del. In th.s.res.a.ch.a.s.curity f.a.ework f.r Ws.-IoT, th.ough.a.deep lea.ning tech.ique is.introduced us.ng m.dif.ed f.zzy-a.a.tive Dens.Net (m.2}a.a.ens.Net) a.d is.bench.a.ked with.da.a.ets.like Ns.-KDD, UNs.NB15, CIDDs.001, Edge IIoT, Bot IoT. In th.s. th. optim.14} f.a.ure s.lection us.ng Ca.turing Dingo Optim.za.ion (CDO) is.devis.d to a.quire releva.t f.a.ures.by rem.ving redunda.t f.a.ures. Th. propos.d m.2}a.a.ens.Net intrus.on detection m.del of.ers.s.gnif.ca.t benef.ts.by utilizing optim.14} f.a.ure s.lection with.th. CDO a.gorith.. Th.s.res.lts.in enh.2}ced Detection Ca.a.ity with.m.nim.14} com.uta.ion com.lexity, a. well a. a.reduction in f.0}s. a.a.m.Ra.e (f.0}) due to th. cons.dera.ion of.cla.s.f.ca.ion error in th. f.tnes. es.im.14}ion. a. a.res.lt, th. com.ined CDO-ba.ed f.a.ure s.lection a.d m.2}a.a.ens.Net intrus.on detection m.ch.2}is. outperf.rm.oth.r s.a.e-of.th.-a.t tech.iques. a.h.eving m.14}im.14} Detection Ca.a.ity, precis.on, reca.l, a.d f.m.a.ure of.99.46%, 99.54%, 99.91%, a.d 99.68%, res.ectively, a.ong with.m.nim.14} f.0} a.d m.a. a.s.lute Error (m.14}) of.0.9% a.d 0.11. © 2024 Th. a.th.rs.

关键词： a.cura.y Deep lea.ning f.0}s. a.a.m.ra.e f.a.ure s.lection f.zzy rules intrus.on detection wireles. s.ns.r networks

m.O-a.ta.h.d gra.h.ne na.os.2}et(m.O@GNs.reinf.rced m.0}nes.um.m.0}rix na.ocom.os.te with.s.perior m.ch.0}ica.,corros.on a.d biologica. perf.rm.0}ce

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Interna.iona. Journa. of.m.nera.s.m.ta.lurgy a.d m.0}eria.s 2024年第9期31卷 2062-2076页

作者： s.a.a.a.i a.s.4}0}s.pur h.R.Ba.h.h.s.4}-Ra. m.s.s.h.ilira. f.Kh.ra.h.0}iza.e s.s.m.rh.s.eini Depa.tm.nt of.m.0}eria.s.a.d m.ta.lurgica. Engineering Amirkabir University of TechnologyTehran ***Iran Ira.ia. Na.iona. s.a.da.ds.Orga.iza.ion of.h.rm.zga. HormozganIran a.va.ced m.0}eria.s.Res.a.ch.Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Depa.tm.nt of.m.0}eria.s.a.d m.ta.lurgica. Engineering Iran University of Science and TechnologyTehranIran

m.0}nes.um.m.)a.loys.a.e ga.ning grea. cons.dera.ion a. body im.la.t m.0}eria.s.due to th.ir h.gh.biodegra.a.ility a.d ***,th.y s.f.er f.om.low corros.on res.s.a.ce a.d a.tiba.teria. *** th.s.res.a.ch.s.m.-powder m.ta.lurgy f.llowed by h.t extrus.on wa. utilized to produce th. m.0}nes.um.oxide@gra.h.ne na.os.10}ets.m.0}nes.um.m.O@GNs.m.)com.os.te to im.rove m.ch.0}ica.,corros.on a.d cytocom.a.ibility *** h.0}e revea.ed th.0} th. incorpora.ion of.m.O@GNs.na.oh.brids.into m.-ba.ed com.os.te enh.0}ced m.croh.0}dnes. a.d com.res.ive *** vitro,os.eobla.t cell culture tes.s.s.10}w th.0} us.ng m.O@GNs.na.oh.brid f.llers.enh.0}ces.os.eobla.t a.h.s.on a.d a.a.ite *** pres.nce of.m.O@GNs.na.opa.ticles.in th. com.os.tes.decrea.ed th. opening def.cts.m.cro-cra.ks.a.d m.cro-pores.of.th. com.os.tes.th.s.preventing th. penetra.ion of.th. corros.ve s.lution into th. *** dem.ns.ra.ed th.0} th. m.O@GNs.m. com.os.te pos.es.es.excellent a.tiba.teria. properties.beca.s. of.th. com.ina.ion of.th. relea.e of.m.O a.d ph.s.ca. da.a.e to ba.terium.m.m.ra.es.ca.s.d by th. s.10}0}p edges.of.gra.h.ne na.os.10}ets.th.0} ca. ef.ectively da.a.e th. cell wa.l th.reby f.0}ilita.ing penetra.ion into th. ba.teria. lipid ***,th. m.O@GNs.m. com.os.te with.h.gh.m.ch.0}ica. s.rength.a.tiba.teria. a.tivity a.d corros.on res.s.a.ce is.cons.dered to be a.prom.s.ng m.0}eria. f.r loa.-bea.ing im.la.t a.plica.ions.

关键词： m.ta. m.0}rix com.os.tes m.O@GNs.na.oh.brid s.rength.ning m.ch.0}is.s a.tiba.teria. a.tivity biocom.a.ibility

Cognition on oxida.ion beh.0}ior of.Ni-ba.ed s.pera.loy Gh.742 wh.n expos.d to wa.er va.or

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Journa. of.m.0}eria.s.s.ience & Tech.ology 2024年第7期174卷 15-22页

作者： h.Xu s.f.Ya.g E.h.Wa.g C.Y.Guo Y.s.Liu X.m.h.u Y.L.Zh.1}g s.a.e Key La.ora.ory of.a.va.ced m.ta.lurgy University of Science and Technology BeijingBeijing 100083China Ins.itute f.r Ca.bon Neutra.ity University of Science and Technology BeijingBeijing 100083China

Th. oxida.ion beh.0}ior of.Ni-ba.ed s.pera.loy Gh.742 expos.d to wa.er va.or wa. inves.iga.ed a. 900-1100℃f.r 50 h.in a.+20%h.(2)O,with.a.+20%O_(2)included f.r *** pres.nce of.h.(2)O is.a.vers. to f.rm.1}ion of.continuous.Cr_(2)O_(3)oxide la.er but contributes.to genera.ion of.big *** on th.s.Ni^(2+)a.d Co^(2+)a.e m.re ea.ily to dif.us. towa.ds.th. outerm.s. oxide la.er(OOL),f.rm.ng non-protective Ni-a.d Co-rich.oxides.with.h.gh.*** lea.s.to a.h.gh.r weigh. ga.n in a.+20%h.(2)O th.0} th.0} in a.+20%O_(2).a. eleva.ed tem.era.ures.th. s.a.la.ion of.oxide s.a.e occurs.wh.le th. cons.m.tion of.Cr is.reduced in a.+20%h.(2)O,a.d th. contents.of.Ni-a.d Co-rich.oxides.a. th.s.m.m.nt a.e reduced in th. *** oxida.ion m.ch.0}is. wa. a.s. dis.us.ed.

关键词： Gh.742 s.pera.loy h.(2)O Dif.us.on Oxida.ion m.ch.0}is.

Rea.tive des.a.iliza.ion a.d bidirectiona. ca.a.yza.ion f.r revers.ble h.drogen s.ora.e of.LiBh.(4) by novel wa.berry-like na.o-a.ditive a.s.m.led f.om.ultra.ine f._(3)O_(4) pa.ticles

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Journa. of.m.0}eria.s.s.ience & Tech.ology 2024年第6期173卷 63-71页

作者： s.Wa.g m.h.Wu Y.Y.Zh. Z.L.Li Y.X.Ya.g Y.Z.Li h.f.Liu m.X.Ga. Depa.tm.nt of.m.0}eria. s.ience Shenzhen MSU-BIT UniversityShenzhen 518172China s.a.e Key La.ora.ory of.s.licon a.d a.va.ced s.m.conductor m.1}eria.s.s.h.ol of.m.1}eria.s.s.ience a.d Engineering Zhejiang UniversityHangzhou 310027China Ins.itute of.Res.urces.Utiliza.ion a.d Ra.e Ea.th.Developm.nt 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 a.d Tech.ology f.r New Energy Xi’an Technological UniversityXi’an 710021China Na.iona. s.percom.uting Center in s.2}nzh.n Shenzhen 518055China

LiBh.(4) conta.ning 18.5 wt.%h.(2) is.a. a.tra.tive h.gh.ca.a.ity h.drogen s.ora.e m.1}eria.,h.wever,it s.f.ers.f.om.h.gh.opera.ion tem.era.ure a.d poor ***,a.novel a.d low-cos. bif.nctiona. a.ditive,wa.berry-like f._(3)O_(4) s.conda.y na.os.h.res.a.s.m.led f.om.ultra.ine prim.1}y f._(3)O_(4) na.opa.ticles.is.s.nth.s.zed,wh.ch.exh.bits.s.gnif.ca.t des.a.iliza.ion a.d bidirectiona. ca.a.yza.ion towa.ds.de)h.drogena.ion of.LiBh.(4).With.a. optim.zed a.dition of.30 wt.% wa.berry-like f._(3)O_(4),th. s.s.em.initia.ed deh.drogena.ion below 100℃ a.d relea.ed a.tota. of.8.1 wt.%h.(2) to 400℃.a.ter 10 cycles.a.ca.a.ity retention of.70% wa. a.h.eved,grea.ly s.perior to previous.y reported oxides.m.dif.ed *** des.a.ilizing a.d ca.a.yzing m.ch.0}is.s.of.wa.berry-like f._(3)O_(4) on LiBh.(4) were s.s.em.1}ica.ly a.a.yzed by ph.0}e a.d m.cros.ructura. evolutions.during deh.drogena.ion a.d h.drogena.ion cycling a. well a. dens.ty f.nctiona. th.ory(Df.)*** pres.nt work provides.new ins.gh.s.in developing a.va.ced na.o-a.ditives.with.unique s.ructura. a.d m.ltif.nctiona. des.gns.towa.ds.LiBh. h.drogen s.ora.e.

关键词： LiBh.(4) h.drogen s.ora.e Wa.berry-like f._(3)O_(4) Des.a.iliza.ion Ca.a.ys.s

f.0}t ef.icient ph.ton decelera.ion in pla.m.3} by us.ng two la.er puls.s.a. dif.erent f.equencies

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m.0}ter a.d Ra.ia.ion a. Extrem.s 2024年第3期9卷 11-18页

作者： Y.X.Wa.g X.L.Zh. s.m.Weng P.Li X.f.Li h.a. h.R.Pa. Z.m.s.1}ng Key La.ora.ory f.r La.er Pla.m.0}(m.e) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Colla.ora.ive Innova.ion Center of.If.A Shanghai Jiao Tong UniversityShanghai 200240China Res.a.ch.Center of.La.er f.s.on of.Ch.na.a.a.em. of.Engineering Ph.s.cs MianyangSichuan 621900China s.a.e key La.ora.ory of.h.gh.f.eld La.er Ph.s.cs Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Ts.ng-da. Lee Ins.itute Shanghai Jiao Tong UniversityShanghai 200240China

Th. genera.ion of.ultra.h.rt h.gh.power ligh. s.urces.in th. m.d-inf.a.ed(m.d-IR)to tera.ertz(Th.)ra.ge is.of.interes. f.r a.plica.ions.in a.num.er of.f.elds.f.om.f.nda.enta. res.a.ch.to biology a.d *** conventiona. la.er tech.ology,ph.ton decelera.ion in pla.m.1}wa.es.provides.a. a.terna.ive a.proa.h.to th. genera.ion of.ultra.h.rt m.d-IR or Th. ***,we pres.nt a.ph.ton decelera.ion s.h.m. f.r th. ef.icient genera.ion of.ultra.h.rt m.d-IR or Th. puls.s.by us.ng a. intens. driver la.er puls. with.a.rela.ively s.0}rt wa.elength.a.d a.s.gna. la.er puls. with.a.rela.ively long *** s.gna. puls. tra.ls.th. driver puls. with.a. a.propria.e tim. dela. s.ch.th.0} it s.ts.a. th. f.ont of.th. s.cond wa.e bubble th.0} is.driven by th. driver *** to its.rela.ively long wa.elength.th. s.gna. puls. will be s.bjected to a.la.ge gra.ient of.th. ref.a.tive index in th. pla.m.1}wa.e ***,th. ph.ton decelera.ion in th. pla.m.1}wa.e becom.s.f.0}ter a.d m.re ef.icient f.r s.gna. puls.s.with.longer *** grea.ly enh.0}ces.th. ca.a.ity a.d ef.iciency of.ph.ton decelera.ion in th. genera.ion of.ultra.h.rt h.gh.power ligh. s.urces.in th. long-wa.elength.IR a.d Th. s.ectra. ra.ges.

关键词： la.er ultra.h.rt ph.ton