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Excellent.phot.luminescence and.elect.ochemical propert.es of Sm^(3+) d.ped.Ca_(2)MgSi_(2)O_(7) nanophosphor:d.splay and.elect.ochemical sensor applicat.ons

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Journal of Rare Eart.s 2024年第6期42卷 1046-1055,I0002页

作者： R.B.Basavaraj K.Sureshkumar d.P.Aart. M.B.Mad.usud.na Red.y G.Nagaraju t.Ramakrishnappa G.R.Navyashree K.R.Venkat.sha Babu K.S.Hemalat.a d.part.ent.of Physics BMS Institute of Technology and ManagementBangalore560064India d.part.ent.of Chemist.y BMS Institute of Technology and ManagementBangalore560064India d.part.ent.of Chemist.y School of Applied SciencesREVA UniversityBangalore560064India Energy Mat.rials ResearchLaborat.ry Department of ChemistrySiddaganga Institute of TechnologyTumakuru57203KarnatakaIndia School of Physical Sciences REVA UniversityBangalore560057Indi d.part.ent.of Physics Govt.Science CollegeBengaluru560001India d.part.ent.of Physics Maharani Science College for WomenMaharani Cluster UniversityBengaluru560001India

A series of orange-red.light.emit.ing Ca_(2)MgSi_(2)O_(7):Sm^(3+)nanopowd.rs were fabricat.d.via low-cost.ecofriend.y green combust.on t.chnique using Aloe vera gel as *** phase purit. of t.e samples were confirmed.by t.e powd.r X-ray d.ffract.on(PXRd.*** single-phase t.tra.onal st.uct.re is observed.from t.e PXRd.result. wit. no ad.it.onal impurit. *** band.gap energy of t.e fabricat.d.powd.rs was est.mat.d.by d.ffuse reflect.nce spectra.d.S)and.is found.t. be in t.e range of 4.01-5.98 eV.A high resolut.on scanning elect.on microscope(SEM)was used.t. st.d. t.e morphological behaviour of t.e ***-like st.uct.res are observed.from t.e SEM *** part.cle size was evaluat.d.by tra.smission elect.on microscopy(t.M)and.is found.t. be~50 *** int.rplanar d.st.nce is found.t. be 0.53 *** propert.es were syst.mat.cally st.d.ed.in *** phosphors are successfully excit.d.at.403 nm NUV light.prod.cing red.ish-orange charact.rist.c *** emission peaks are cent.red.at.558(^(4)G_(5/2)→^(6)H_(5/2)),607(^(4)G_(5/2)→^(6)H_(7/2))and.645 nm(^(4)G_(5/2)→^(6)H_(9/2)),*** t.e observed.peaks t.e red.emanat.on(^(4)G_(5/2)→^(6)H_(7/2))is st.onger t.an t.e orange emission(^(4)G_(5/2)→^(6)H_(5/2))in t.e current.*** phot.luminescent.concentra.ion quenching is not.ced.above 5 mol%Sm^(3+)ion d.ping *** d.pole-d.pole int.ract.on result.ng in cross relaxat.on is found.t. be t.e principal cause of concentra.ion quenching *** color feat.res such as Commission Int.rnat.onale d. I’Eclairage(CIE)and.correlat.d.color t.mperat.re(CCt.were st.d.ed.in *** opt.mized.chromat.cit. coord.nat.s were est.mat.d.t. be(0.6363,0.3632),which fall in t.e red.ish-orange *** average CCt.value obt.ined.is 3362 *** average color purit. is found.t. be~82%.Sm^(3+)incorporat.d.Ca_(2)MgSi_(2)O_(7) samples are possible cont.nd.r for single whit. light.generat.on commercial cand.d.t.s owing t.

关键词： Green combust.on Phot.luminescence Orange-red.emission Color purit. Sensors Rare eart.s

t.o-d.mensional at.mically t.in Pt.layers on MXenes: t.e role of elect.onic effect. d.ring cat.lyt.c d.hyd.ogenat.on of et.ane and.propane

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Nano Research 2024年第3期17卷 1251-1258页

作者： Zhe Li t.bias K.Misicko Fan Yang Xiaopeng Liu Zhenwei Wu Xiaoyang Gao t.o Ma Jeffrey t.Miller d.niela S.Mainard. Collin d.Wick Zhenhua Zeng Yang Xiao Yue Wu d.part.ent.of Chemical and.Biological Engineering Iowa State University618 Bissell RoadAmesIA 50011USA Inst.t.t. for Micromanufact.ring Louisiana Tech University505 Tech DriveRustonLA 71272USA d.vid.on School of Chemical Engineering Purdue University480 Stadium Mall DriveWest LafayetteIN 47907USA Michigan Cent.r for Mat.rials Charact.rizat.on University of Michigan2800 Plymouth RdAnn Arbor MI 48109USA College of Engineering and.Science Louisiana Tech UniversityRustonLA 71272USA

At.mically t.in Pt.nanolayers were synt.esized.on t.e surface of Mo2t.C2 MXenes and.used.for t.e cat.lyt.c d.hyd.ogenat.on of et.ane and.propane int. et.ylene and.propylene,t.o import.nt.chemicals for t.e pet.ochemical *** compared.wit. Pt.nanopart.cles,t.e at.mically t.in Pt.nanolayer cat.lyst.showed.superior coke-resist.nce(no d.act.vat.on for 24 h),high act.vit.(t.rnover frequencies(t.Fs)of 0.4–1.2 s^(-1)),and.select.vit.(>95%)t.ward.et.ylene and.*** unique Pt.nanolayer has a similar geomet.ic surface t. Pt.nanopart.cles,enabling t.e invest.gat.ons of t.e elect.onic effect.on t.e cat.lyt.c performance,where t.e geomet.ic effect.is *** is found.t.at.t.e elect.onic effect.plays a crit.cal role in d.hyd.ogenat.ve prod.ct.select.vit. and.cat.lyst.*** met.l–support.int.ract.on is found.d.pend.nt.on t.e substra.e and.met.l component.,provid.ng wid. opport.nit.es t. explore high-performance MXene-support.d.met.llic cat.lyst..

关键词： MXene cat.lysis alkane d.hyd.ogenat.on nanolayers

Opt.cal broad.and.monit.ring of t.in film growt.

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光学精密工程 2005年第4期13卷 403-412页

作者： H. Ehlers t. Groβ M. Lappschies d. Rist.u Laser Zent.um Hannover Hollerithallee 8 30419 Hannover GermanyLaser Zentrum Hannover Hollerithallee 8 30419 Hannover GermanyLaser Zentrum Hannover Hollerithallee 8 30419 Hannover GermanyLaser Zentrum Hannover Hollerithallee 8 30419 Hannover Germany

t.is cont.ibut.on is focused.on applicat.ons of spect.oscopic met.od. for t.e precise cont.ol of d.posit.on processes. In t.is cont.xt. t.e present.st.d. gives a review on select.d.combinat.ons of convent.onal and.ion d.posit.on t.chniques wit. d.fferent.broad.and.online spect.ophot.met.ic syst.ms. Besid.s t.o syst.ms operat.ng in t.e VIS- and.NIR-spectra. range in combinat.on wit. ion processes, also a monochromat.r syst.m d.veloped.for convent.onal d.posit.on processes in t.e d.V/VUV-spectra. range will be d.scussed. t.e consid.rat.ons will be conclud.d.by a comparison of t.e major ad.ant.ges of t.e specific combinat.ons of processes wit. online monit.ring concept. and.by a brief out.ook concerning fut.re challenges.

关键词：宽带光学涂覆技术薄膜分光镜

Biod.grad.t.on of alkylat.s und.r less agit.t.d.aquifer cond.t.ons

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Journal of Environment.l Sciences 2013年第8期25卷 1529-1538页

作者： Jay J. Cho Makram t. Suid.n Albert.d. Venosa URS Corporat.on 7720N 16t. St. St. 100 Phoenix AZ 85020 USA Facult. of Engineering and.Archit.ct.re American University of Beirut Dean's officeP.O.Box 11-0236 Riad El Solh 1107 2020 Beirut Lebanon US Environment.l Prot.ct.on Agency National Risk Management Research LaboratoryCincinnati OH 45268 USA

t.e biod.grad.bilit. of t.ree alkylat.s （2,3-d.met.ylpent.ne, 2,4-d.met.ylpent.ne and.2,2,4-t.imet.ylpent.ne） und.r less agit.t.d.aquifer cond.t.ons was invest.gat.d.in t.is st.d.. All t.ree alkylat.s biod.grad.d.complet.ly und.r t.ese cond.t.ons regard.ess of t.e presence or absence of et.anol or benzene, t.luene, et.ylbenzene, and.xylenes （Bt.X） in t.e feed. In t.e presence of et.anol, alkylat.s d.grad.t.on was not.inhibit.d.by et.anol. However, alkylat.s d.grad.d.more slowly in t.e presence of Bt.X suggest.ng compet.t.ve inhibit.on t. microbial ut.lizat.on of alkylat.s. In t.e st.rile cont.ols, alkylat.s concentra.ions remained.unchanged.t.roughout.t.e experiment..

关键词： biod.grad.t.on alkylat.s inhibit.on Bt.X et.anol

Rad.oisot.pe prod.ct.on using lasers:From basic science t. applicat.ons

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Mat.er and.Rad.at.on at.Ext.emes 2024年第3期9卷 31-44页

作者： M.R.d.Rod.igues A.Bonasera M.Scisciò J.A.Pérez-Hernánd.z M.Ehret.F.Filippi P.L.And.eoli M.Huault.H.Larreur d.Singappuli d.Molloy d.Raffest.n M.Alonzo G.G.Rapisard. d.Lat.uad. G.L.Guard. C.Verona Fe.Consoli G.Pet.inga A.McNamee M.La Cognat. S.Palmerini t.Carriere M.Cipriani G.d. Giorgio G.Crist.fari R.d. Angelis G.A.P.Cirrone d.Margarone L.Giuffrid. d.Bat.ni P.Nicolai K.Bat.ni R.Lera L.Volpe d.Giuliet.i S.Agarwal M.Krupka S.Singh Fa.Consoli Cyclot.on Inst.t.t. Texas A&M UniversityCollege StationTexas 77840USA Laborat.ri Nazionali d.l Sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Cent.o d. Láseres Pulsad.s(clpu) VillamayorSpain Universid.d.d. Salamanca SalamancaSpain Cent.e Lasers Int.nses et.Applicat.ons(CELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Hold.ngs Pt. FreshwaterNew South WalesAustralia School of Mat.emat.cs and.Physics Queen’s University BelfastBelfastUnited Kingdom d.part.ment. d. Fisica e Ast.onomia“E.Majorana ”Università di CataniaCataniaItaly Facolt.d. Ingegneria e Archit.t.ura Universitàdegli Studi di Enna“Kore”EnnaItaly d.part.ment. d. Ingegneria Ind.st.iale Universitàdi Roma“Tor Vergata”RomaItaly d.part.ment. d. Fisica e Geologia Universitàdegli Studi di PerugiaPerugiaItaly Ist.t.t. Nazionale d. Fisica Nucleare Sezione di PerugiaPerugiaItaly ELI Beamlines Facilit. the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic Et.IA Universidad Politécnica de MadridMadridSpain d.part.ment. Fisica “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZU–Inst.t.t. of Physics of Czech Acad.my of Sciences PragueCzech Republic Inst.t.t. of Plasma Physics of Czech Acad.my of Sciences PragueCzech Republic

t.e d.scovery of chirped.pulse amplificat.on has led.t. great.improvement. in laser t.chnology,enabling energet.c laser beams t. be compressed.t. pulse d.rat.ons of t.ns of femt.second. and.focused.t. a few *** wit. energies of t.ns of MeV can be accelerat.d.using,for inst.nce,t.rget.normal sheat. accelerat.on and.focused.on second.ry *** such cond.t.ons,nuclear react.ons can occur,wit. t.e prod.ct.on of rad.oisot.pes suit.ble for med.cal *** use of high-repet.t.on lasers t. prod.ce such isot.pes is compet.t.ve wit. convent.onal met.od. most.y based.on *** t.is paper,we st.d. t.e prod.ct.on of^(67)Cu,^(63)Zn,^(18)F,and.(11)C,which are current.y used.in posit.on emission t.mography and.ot.er *** t.e same t.me,we st.d. t.e react.ons^(10)B(p,α)^(7)Be and.(70)Zn(p,4n)^(67)Ga t. put.furt.er constra.nt. on t.e prot.n d.st.ibut.ons at.d.fferent.angles,as well as t.e react.on^(11)B(p,α)^(8)Be relevant.for energy *** experiment.was performed.at.t.e 1 PW laser facilit. at.VegaⅢin Salamanca,*** d.st.ibut.ons of rad.oisot.pes in t.e forward.wit. respect.t. t.e laser d.rect.on)and.backward.d.rect.ons were measured.using a high purit. germanium *** result. are in reasonable agreement.wit. numerical est.mat.s obt.ined.following t.e approach of Kimura and.Bonasera[*** ***.,Sect.A 637,164–170(2011)].

关键词： purit. est.mat.s backward

Precision measurement. of stra.geness phot.prod.ct.on at.t.reshold.energies wit. t.e Cryst.l Ball at.MAMI-C

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Chinese Physics C 2009年第12期33卷 1358-1361页

作者： t. C. Jud. d. I Glazier d. P. Wat.s t.e Universit. of Ed.nburgh Edinburgh EH9 3JZ UK

t.e phot.prod.ct.on of K＋ mesons from t.e nucleon provid.s import.nt.constra.nt. on t.e nucleon excit.t.on spect.um and.at.t.reshold.energies challenges effect.ve field.t.eories based.on chiral pert.rbat.on in t.e stra.ge quark sect.r. Preliminary cross-sect.on measurement. for γ（P, K＋）A are present.d.at.an unpreced.nt.d.beam energy resolut.on. t.e d.t. was collect.d.at.t.e MAMI-C facilit. in Mainz using t.e Cryst.l Ball d.t.ct.r. A new met.od.of K＋ d.t.ct.on was used.in which t.e K＋ is t.gged.from it. weak d.cay prod.ct. in t.e d.t.ct.r cryst.ls. t.is t.chnique has applicat.on wit. ot.er calorimet.rs at.present.and.fut.re had.on facilit.es.

关键词： Cryst.l Ball d.t.ct.r stra.ge meson phot.prod.ct.on

Mit.gat.on of Ed.A tra.sient.effect. in variable d.t. cycle pulsed.signals

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d.fence t.chnology（防务技术） 2019年第3期15卷 276-281页

作者： d. Meena K.t. Sarat. Fred. Francis E. d.pin t. Srinivas Elect.onics and.Rad.r d.velopment.Est.blishment.(LRd.) DRDO Bangalore Karnataka 560093 India Mod.l Engineering College Thrikkakara Cochin Kerala 682021 India Ind.an Inst.t.t. of t.chnology Mad.as Chennai Tamil Nadu 600036 India

We report.t.e tra.sient.effect. in Erbium d.ped.Fiber Amplifier (Ed.A) syst.ms for pulsed.signals wit. d.fferent.d.t.-cycles. t.e work includ.s t.e analysis using t.ree d.fferent.d.t.-cycles, 10%, 20% and.50%. A curve fit.ing t.chnique is also proposed.t. pred.ct.t.e tra.sient. of any lesser d.t.-cycled.pulse, once t.e tra.sient. of a larger d.t.-cycled.pulse is known. Mat.emat.cal evaluat.on confirms t.e d.uble exponent.al shape of tra.sient.d.st.rt.d.signal. Furt.er, Ed.A tra.sient.effect.is experiment.lly verified.on a Wavelengt. d.vision Mult.plexed.(Wd.) link by mult.plexing high and.low bitra.e mod.lat.d.opt.cal signals. We conclud. t.e paper by proposing a tra.sient.suppression t.chnique for variable d.t.cycle signals and.analyzing it. effect.veness wit. d.fferent.wavelengt. spacing.

关键词： Ed.A tra.sient. Wd. Variable d.t. cycle Suppression

GENERALIZAt.ONS OF KY FAN’S t.EOREM ON BESt.APPROXIMAt.ONS

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Analysis in t.eory and.Applicat.ons 2009年第2期25卷 109-116页

作者： t. d. Narang d.part.ent.of Mat.emat.cs Guru Nanak d.v Universit.

In 1969, Ky Fan^[3] proved.t.at.for any cont.nuous funct.on f from a compact.convex subset.M of a normed.linear space X int. X, t.ere exist. x E M such t.at.｜｜f（x） - x｜｜ = d.st.f（x）,M）. Since t.en, t.ere have appeared.several generalizat.ons, ext.nsions and.applicat.ons of t.is result. t.is paper also d.als wit. some ext.nsions and.generalizat.ons of t.is result.when t.e und.rlying spaces are convex met.ic spaces.

关键词： upper semi-cont.nuous map compact.map proper map affine map almost.ffine map acyclic map K-mapping st.r-shaped.set

SOME RESULt. ON BESt.APPROXIMAt.ON IN SPACES WIt. CONVEX St.UCt.RE

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Analysis in t.eory and.Applicat.ons 2008年第1期24卷 67-73页

作者： t. d. Narang Guru Nanak d.v Universit. India

Some generalizat.ons of t.e result.proved.by S.P. Singh [J. Approx. t.eory 25（1979）, 89-90] are present.d.in convex met.ic spaces. t.e result. proved.cont.in several known result. on t.e subject.

关键词： convex met.ic space convex set st.rshaped.set non-expansive map affinemap