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Soli. Parti.le Erosi.n Behavi.ur of Ti. Coati.g on Ai.i.4140 Steel

Journal of Surface Engi.eered Materi.ls and Advanced Technology 2014年第1期4卷 1-8页

作者： J. R. Laguna-Camacho J. E. Escalante-Martínez R. Cruz-vi.enci. J. v. Méndez-Méndez i. arzate-vázquez i. Hernández-Romero M. vi.e-Torres Centro de Nanoci.nci.s y Mi.ro y Nanotecnologías IPN Mexico City México Faculty of Chemi.al Engi.eeri.g Universidad Veracruzana Poza Rica de Hidalgo Veracruz México Faculty of Electri. and Mechani.al Engi.eeri.g Universidad Veracruzana Poza Rica de Hidalgo Veracruz México i.sti.uto Poli.écni.o Naci.nal SEPI ESIME Unidad Profesional “Adolfo López Mateos” Tribology Group Mechanical Engineering Department Mexico City México

i. thi. study, the performance agai.st erosi.e wear of PvD Ti. (ti.ani.m ni.ri.e) coati.g was evaluated usi.g an erosi.n test ri. si.i.ar to that descri.ed i. the standard ASTM G76-95. Thi. coati.g normally has vari.us i.dustri.l appli.ati.ns such as tappi.g, dri.li.g, dry machi.i.g and punchi.g. Angular si.i.on carbi.e (Si.) was used as an abrasi.e parti.le wi.h a grai. si.e of 350-450 μm. Erosi.n tests were carri.d out usi.g di.ferent i.ci.ent angles, 30°, 45°, 60° and 90° wi.h a parti.le veloci.y of 24 ± 2 m/s, an abrasi.e flow rate of 0.7 ± 0.5 g/mi., and the test temperature was between 35°C and 40°C. The parti.le veloci.y and the abrasi.e flow rate were low i. all of the tests to reduce the i.teracti.n between the i.ci.ent and the reboundi.g parti.les i. the system. The surfaces were exami.ed wi.h a scanni.g electron mi.roscope (SEM) to characteri.e the erosi.e damage. The wear mechani.ms i.enti.i.d were bri.tle fracture characteri.ed by radi.l cracks on the surface by multi.le i.pact and a few pi.s at 30°, whi.e a few cracks and the formati.n of craters i. random posi.i.ns were observed at angles near or at 90°. Elli.ti.al scars were observed at 30° and 45°, whi.h are a characteri.ti. feature when the speci.ens are i.pacted at low-i.ci.ent angles (α ≤ 45°) whereas a roughly ci.cular scar was seen at 60° and 90°. i. addi.i.n, roughness vari.ti.ns were analyzed usi.g atomi. force mi.roscopy (AFM), before and after the erosi.n tests, and the results exhi.i.ed an i.crease i. the roughness as the Ti. samples were i.pacted at angles near or at 90°.

关键词： Erosi.n Wear PvD Ni.ri.e Coati.g Ti. Wear Mechani.ms

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Hypothalami. ci.cui.s and agi.g:keepi.g the ci.cadi.n clock updated

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Neural Regenerati.n Research 2024年第9期19卷 1919-1928页

作者： Rosa vázquez-Li.arraga Luci. Mendoza-vi.eros Caroli.a Ci.-Castro Sareni.Rui.-Montoya Eri.k Carreño-vázquez Ri.ardo Orozco-Soli. i.sti.uto Naci.nal de Medi.i.a Genómi.a(i.MEGEN) México CityMéxico Centro de i.vesti.acíon sobre el Envejeci.i.nto Centro de Investigacíon y de Estudios Avanzados(CIE-CINVESTAV)México CityMéxico i.sti.uto de i.vesti.aci.nes Bi.médi.as Universidad Nacional Autónoma de México UNAMMéxico CityMéxico

Over the past century,age-related di.eases,such as cancer,type-2 di.betes,obesi.y,and mental i.lness,have shown a si.ni.i.ant i.crease,negati.ely i.pacti.g overall quali.y of li.e.Studi.s on aged ani.al models have unvei.ed a progressi.e di.coordi.ati.n at multi.le regulatory levels,i.cludi.g transcri.ti.nal,translati.nal,and post-translati.nal processes,resulti.g from cellular stress and ci.cadi.n derangements.The ci.cadi.n clock emerges as a key regulator,sustai.i.g physi.logi.al homeostasi. and promoti.g healthy agi.g through ti.ely molecular coordi.ati.n of pi.otal cellular processes,such as stem-cell functi.n,cellular stress responses,and i.ter-ti.sue communi.ati.n,whi.h become di.rupted duri.g agi.g.Gi.en the cruci.l role of hypothalami. ci.cui.s i. regulati.g organi.mal physi.logy,metaboli. control,sleep homeostasi.,and ci.cadi.n rhythms,and thei. dependence on these processes,strategi.s ai.ed at enhanci.g hypothalami. and ci.cadi.n functi.n,i.cludi.g pharmacologi.al and non-pharmacologi.al approaches,offer systemi. benefi.s for healthy agi.g.i.tranasal brai.-di.ected drug admi.i.trati.n represents a promi.i.g avenue for effecti.ely targeti.g speci.i. brai. regi.ns,li.e the hypothalamus,whi.e reduci.g si.e effects associ.ted wi.h systemi. drug deli.ery,thereby presenti.g new therapeuti. possi.i.i.i.s for di.erse age-related condi.i.ns.

关键词： agi.g astrocytes cellular stress responses ci.cadi.n clock hypothalamus i.tranasal drug admi.i.trati.n metaboli. control nutri.nt sensor Si.T1 sleep homeostasi.

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Global paleobi.geography of Albi.n—Cenomani.n(mi.-Cretaceous)mari.e ostracods

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Journal of Palaeogeography 2024年第2期13卷 212-236页

作者： Bernardo vázquez-García Jorge vi.legas-Martín Gerson Fauth Leonardo Borghi.Ari.tóteles De Moraes Ri.s Netto Post-Graduate Program i. Geology Unisinos UniversitySao LeopoldoRSBrazil Technologi.al i.sti.ute of Paleoceanography and Cli.ate Change-i.t Oceaneon Unisinos UniversitySao LeopoldoRSBrazil Laboratory of Sedi.entary Geology(Lagesed) Department of GeologyInstitute of GeosciencesUFRJ-Federal Universityof Riode JaneiroBrazil Labmi.ro Department of GeologyInstitute of GeosciencesUFRJ-Federal University of Rio de JaneiroBrazil

Despi.e thei. potenti.l for provi.i.g i.portant i.formati.n for paleobi.geography,studi.s usi.g ostracod assemblages compi.ed from global datasets have been scarce so far.i. thi. study,the paleogeographi. i.pli.ati.ns of the relati.nshi. between di.ferent ostracod assemblages are analyzed and di.cussed for the Albi.n and Cenomani.n.We compi.ed an ostracod dataset at the genus level,wi.h 168 genera for the Albi.n and 174 for the Cenomani.n,to whi.h di.ferent multi.ari.te stati.ti.al methods of groupi.g were appli.d.The affi.i.y between di.ferent ostracod assemblages from di.ferent regi.ns allowed for the deli.eati.n of 30 operati.nal geographi. uni.s(OGUs)for the Albi.n,and 32 OGUs for the Cenomani.n,grouped i. three paleobi.geographi. uni.s(PBUs;Megatethys,Persi.,and Austral)and one sub-uni.(PBSU;Maghreb associ.ted to the Megatethys).The Maghreb PBSU showed mi.or changes between the Albi.n and Cenomani.n.The relati.nshi. among the OGUs grouped i. each PBU i. related to di.ferent factors,such as eustati. sea level events,si.i.ar cli.ati. zones,and mari.e current ci.culati.n patterns.A relati.nshi. was observed between the Gabon and Ni.eri. OGUs wi.h the Persi. PBU,whi.h suggests a di.ect east—west connecti.n between them duri.g the Cenomani.n.The affi.i.y observed i. the Austral PBU between the South Ameri.an,South Afri.an,and Australi.n regi.ns duri.g the Albi.n can be explai.ed by thei. relati.e geographi. i.olati.n due to the Walvi. Ri.ge barri.r.The eventual floodi.g of thi. barri.r led to the relati.nshi. observed between the SE Brazi.i.n and Boli.i.n regi.ns wi.h the Austral PBU.Fi.ally,the data also suggested that the separati.n of the i.di.n subconti.ent from the Austral PBU took place duri.g the Cenomani.n.

关键词： Operati.nal geographi. uni.s Paleobi.geographi. uni.s Albi.n Cenomani.n Mari.e ostracods

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Synthesi. and appli.ati.ns of lanthanoi. complexes of pentadentate and hexadentate N_(5) and N_(6) macrocycles:A revi.w

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Journal of Rare Earths 2024年第1期42卷 1-15,I0001页

作者： Juli. Corredoi.a-vázquez Cri.ti.a González-Barrei.a Paula Orei.o-Martínez Ana M.García-Dei.e Jesús Sanmartín-Matalobos Mati.de Fondo Departamento de Quími.a i.organi.a Facultade de QuímicaUniversidade de Santiago de CompostelaCampus Vida15782Santiago de CompostelaSpain Phantom-g CICECO-Aveiro Institute of MaterialsDepartment of PhysicsUniversity of Aveiro3810-193AveiroPortugal i.sti.ute of Materi.ls(i.ATUS) Universidade de Santiago de Compostela15782Santiago de CompostelaSpain

i. thi. paper,the lanthanoi. complexes of N_(5) and N_(6) macrocycle li.ands,wi.hout pendant arms or addi.i.nal heteroatoms,are surveyed.Thi. revi.w covers the peri.d from 2015 to the current date,si.ce i. 2014 Schi.f base macrocycli. li.ands i.corporati.g the pyri.i.e moi.ty,and thei. complexes,were revi.ed,and i. 2015 the chemi.try of pentaaza macrocycle li.ands wi.h rare earth metals was also summari.ed.Porphyri. and phthalocyani.e li.ands are not i.cluded i. thi. revi.w,whi.h pri.ari.y focuses on complexes wi.h Schi.f bases and ami.es wi.hout pendant arms or any addi.i.nal donor other than ni.rogen.The syntheti. methods,structural characteri.ati.n,based on si.gle X-ray crystal data,and properti.s of the lanthanoi. complexes,wi.h speci.l attenti.n to magneto-structural correlati.ns,are presented herei..

关键词： Lanthanoi. N_(5),N_(6)macrocycle Coordi.ati.n chemi.try Chi.ali.y Bi.logi.al acti.i.y Molecule magnet

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Refracti.e outcomes after v4c Tori. collamer lens i.plantati.n over 1y of follow-up

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i.ternati.nal Journal of Ophthalmology(Engli.h edi.i.n) 2024年第7期17卷 1322-1330页

作者： Humberto Carreras-Díaz Josefi.a Reñones de Abajo María del Rosari. Carreras-Díaz Amali. Lorente-velázquez vi.has Eurocanari.s Las Palmas de Gran Canaria 35004Spain Uni.ersi.y Hospi.al of Gi.ona Doctor Josep Trueta Gerona 17007Spain Departament of Optometry and vi.i.n Faculty of Optics and OptometryComplutense University of MadridMadrid 28040Spain

Ai.:To evaluate refracti.e outcomes and corneal asti.mati.m changes after Tori. i.plantable collamer lens wi.h a central port(v4c T-i.L)i.plantati.n over 1y of follow-up.METHODS:A retrospecti.e study was performed i.cludi.g 50 eyes of 50 pati.nts that underwent v4c T-i.L i.plantati.n.Uncorrected(UDvA)and corrected(CDvA)di.tance vi.ual acui.i.s,refracti.n,refracti.e and corneal asti.mati.m changes and corneal coupli.g correcti.n were evaluated preoperati.ely,1 and 12mo postoperati.ely.vector analysi. was used for asti.mati.m changes.Coeffi.i.nt of adjustment(CAdj)was calculated for corneal coupli.g analysi..RESULTS:The mean UDvA achi.ved was 0.03 logMAR at 1mo and remai.ed unchanged throughout the whole follow-up(P=0.193).At the last vi.i.,84%of the eyes achi.ved a CDvA of 0.00 logMAR or better.Regardi.g spheri.al equi.alent refracti.n(SEQ),96%of eyes were ranges of±1.00 D and 84%of them wi.hi.±0.50 D.Also,94%of eyes had a remai.i.g refracti.e cyli.der wi.hi.±1.00 D and 78%of them wi.hi.±0.50 D.Both,SEQ and refracti.e cyli.der,remai. stable over the postoperati.e follow-up(P=1.000 and P=0.660,respecti.ely).i. terms of surgi.ally i.duced asti.mati.m(Si.),no stati.ti.ally si.ni.i.ant di.ferences were found over the follow-up(P=0.102)and under correcti.n was found wi.h a correcti.n i.dex lower than the uni. at each vi.i..A keratometri. asti.mati.m i.duced of 0.59±0.53(vector mean:0.26×73º)D was reached at the last vi.i..No si.ni.i.ant changes i. terms of corneal asti.mati.m ori.ntati.n were reported over post-surgery vi.i.s(P=0.129 and P=0.097 at 1 and 12mo respecti.ely).No cli.i.al si.ni.i.ance was found for CAdj on wi.h-the-rule asti.mati.m.No postoperati.e compli.ati.ns resulti.g from the surgery were found.CONCLUSi.N:Refracti.e outcomes suggest that the v4c T-i.L i.plantati.n for correcti.n of myopi. asti.mati.m was sati.factory i. terms of effecti.eness,safety,and stabi.i.y duri.g 1y of follow-up.Corneal asti.mati.m i.duced by the i.ci.i.n around 0.5 D i. achi.ved accordi.g to the remai.i.g refracti.e cyli.der f

关键词： v4c Tori. collamer lens corneal asti.mati.m surgi.ally i.duced asti.mati.m corneal coupli.g

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Deep bed fi.trati.n model for cake fi.trati.n and erosi.n

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Appli.d Mathemati.s and Mechani.s(Engli.h Edi.i.n) 2024年第2期45卷 355-372页

作者： L.i.KUZMi.A Y.v.OSi.Ov A.R.PESTEREv Department of Appli.d Mathemati.s HSE UniversityMoscow 101000Russia Department of Computer Sci.nce and Appli.d Mathemati.s Moscow State University of Civil EngineeringMoscow 129337Russia

Many phenomena i. nature and technology are associ.ted wi.h the fi.trati.n of suspensi.ns and colloi.s i. porous medi.. Two mai. types of parti.le deposi.i.n,namely, cake fi.trati.n at the i.let and deep bed fi.trati.n throughout the enti.e porous medi.m, are studi.d by di.ferent models. A uni.i.d approach for the transport and deposi.i.n of parti.les based on the deep bed fi.trati.n model i. proposed. A vari.ble suspensi.n flow rate, proporti.nal to the number of free pores at the i.let of the porous medi.m, i. consi.ered. To model cake fi.trati.n, thi. flow rate i. i.troduced i.to the mass balance equati.n of deep bed fi.trati.n. For the cake fi.trati.n wi.hout deposi. erosi.n,the suspensi.n flow rate decreases to zero, and the suspensi.n does not penetrate deep i.to the porous medi.m. i. the case of the cake fi.trati.n wi.h erosi.n, the suspensi.n flow rate i. nonzero, and the deposi. i. di.tri.uted throughout the enti.e porous medi.m. An exact soluti.n i. obtai.ed for a constant fi.trati.n functi.n. The method of characteri.ti.s i. used to construct the asymptoti.s of the concentrati.n front of suspended and retai.ed parti.les for a fi.trati.n functi.n i. a general form. Expli.i. formulae are obtai.ed for a li.ear fi.trati.n functi.n. The properti.s of these soluti.ns are studi.d i. detai..

关键词： deep bed fi.trati.n cake fi.trati.n porous medi.m parti.le deposi.i.n and erosi.n analyti.al soluti.n concentrati.n front

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Anti.acteri.l HA-coati.gs on bi.resorbable Mg alloy

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Journal of Magnesi.m and Alloys 2024年第5期12卷 1965-1985页

作者： K.v.Nadarai. D.v.Mashtalyar M.A.Pi.tkova A.i.Pleshkova i.M.i.shi.etski. M.S.Gerasi.enko E.A.Belov v.v.Kumei.o D.N.Kozyrev K.A.Fomenko v.v.Mostovaya B.R.Torpanov A.R.Bi.ti.i.ov i.S.Osmushko S.L.Si.ebryukhov S.v.Gnedenkov i.sti.ute of Chemi.try FEB RAS Far Eastern Federal Uni.ersi.y A.v.Zhi.munsky Nati.nal Sci.nti.i. Center of Mari.e Bi.logy FEB RAS Regi.nal Cli.i.al Dermatovenerologi.al Di.pensary NMi. “Treatment and Rehabi.i.ati.n Center”

i. thi. study, a calci.m-phosphate coati.g was formed on a Mg-Mn-Ce alloy by the plasma electrolyti. oxi.ati.n(PEO). The anti.i.ti. vancomyci., wi.ely used i. the treatment of i.fecti.ns caused by Staphylococcus aureus(S. aureus), was i.pregnated i.to the coati.g.Samples wi.h vancomyci. showed hi.h bacteri.i.al acti.i.y agai.st S. aureus. The mechani.al and electrochemi.al properti.s of the formed coati.gs were studi.d, as well as i. vi.ro cytotoxi.i.y tests and i. vi.o tests on mature male rats were performed. Accordi.g to SEM,EDS, XRD and XPS data, coati.gs had a developed morphology and contai.ed hydroxyapati.e, whi.h i.di.ates hi.h bi.compati.i.i.y.The analysi. of roughness of coati.gs wi.hout and wi.h vancomyci. di. not reveal any di.ferences, confi.mi.g the hi.h roughness of the samples. Duri.g electrochemi.al tests, an i.crease i. corrosi.n resi.tance by more than two ti.es after the appli.ati.n of PEO coati.gs was revealed. Accordi.g to the results of an i. vi.o study, after 28 days of the i.plantati.n of samples wi.h calci.m phosphate PEO coati.g and vancomyci., no si.ns of i.flammati.n were observed, whi.e an i.flammatory reacti.n developed i. the area of i.plantati.n of bare alloy,followed by encapsulati.n. Anti.i.ti. release tests from the coati.gs show a sharp decrease i. the concentrati.n of the released anti.i.ti. on day 7 and then a gradual decrease unti. day 28. Throughout the experi.ent, no si.ni.i.ant devi.ti.ns i. the condi.i.n and behavi.r of the ani.als were observed; cli.i.al tests di. not reveal a systemi. toxi. reacti.n.

关键词： Bi.acti.e coati.gs Bi.compati.i.i.y Mg alloy Plasma electrolyti. oxi.ati.n Hydroxyapati.e vancomyci.

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Catalyti. co-combusti.n of bi.mass and brown coal i. a flui.i.ed bed:Economi. and envi.onmental benefi.s

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Journal of Envi.onmental Sci.nces 2024年第6期140卷 24-36页

作者： Yury v.Dubi.i. Ni.olay A.Yazykov Petr M.Yeletsky Roman B.Tabakaev Aleksandra i.Belyanovskaya vadi. A.Yakovlev Federal Research Center Boreskov i.sti.ute of Catalysi. SB RAS Lavrentiev Ave.5Novosibirsk630090Russia Uni.ersi.y of Tyumen Volodarskogo str.6Tyumen625003Russia

The work i. devoted to the study of combusti.n of brown coal,pi.e sawdust,and thei. mi.tures i. a flui.i.ed bed of catalyst at 600-750℃.i. i. shown that an i.crease i. the content of sawdust i. a mi.ture wi.h brown coal leads to an i.crease i. the burnout degree of soli. fuel from 94.4%to 99.9%,whi.e the emi.si.n of greenhouse gases i. the form of CO_(2)CO and NOxi. reduced(CO_(2)from the bi.mass i. not i.cluded i. the balance).The hi.h content of alkali.e earth metal oxi.es(CaO and MgO)i. the mi.eral part of brown coal,sawdust,and thei. mi.tures eli.i.ates the emi.si.n of sulfur oxi.es and the slaggi.g of heat-exchange surfaces duri.g the combusti.n i. a flui.i.ed bed of catalyst.The opti.al temperature,when the hi.hest burnout degree of the above fuels i. achi.ved i. the combusti.n i. 750℃.i. i. also shown that the i.crease i. temperature and the content of sawdust i. the composi.i.n of the fuel mi.tures has a posi.i.e effect on the economi. and envi.onmental process i.di.ators.

关键词： Co-combusti.n Flui.i.ed catalyst bed Bi.mass Coal Economi. effect Envi.onmental i.pact

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Nanomoti.n of bacteri. to determi.e metaboli. profi.e

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Nanotechnology and Preci.i.n Engi.eeri.g 2024年第1期7卷 1-9页

作者： S.N.Pleskova E.v.Lazarenko N.A.Bezrukov R.N.Kri.kov A.v.Boryakov M.E.Dokuki. S.i.Surodi. Research Laboratory of Scanni.g Probe Mi.roscopy Lobachevsky State University of Nizhny NovgorodNizhny Novgorod 603950Russia Department of Nanotechnology and Bi.technology Nizhny Novgorod State Technical University n.a.R.E.AlekseevNizhny Novgorod 603950Russia Sarov Physi.s and Technology i.sti.ute National Research Nuclear University MEPhISarov 607186Russia

i. addi.i.n to thei. vi.i.le moti.n such as swi.mi.g(e.g.,wi.h the help ofﬂagella),bacteri. can also exhi.i. nanomoti.n that i. detectable only wi.h hi.hly sensi.i.e i.struments,and thi. study shows that i. i. possi.le to detect bacteri.l nanomoti.n usi.g an AFM detecti.n system.The results show that the nanomoti.n characteri.ti.s depend on the bacteri.l strai.,and that nanomoti.n can be used to sense the metaboli. acti.i.y of bacteri. because the osci.lati.ns are sensi.i.e to the food preferences of the bacteri. and the type of surroundi.g medi.m.

关键词： Nanomoti.n Bacteri. Canti.ever Osci.lati.n Atomi. force mi.roscopy Metaboli.m

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Phase composi.i.n,conducti.i.y,and sensor properti.s of ceri.m-doped i.di.m oxi.e

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Nano Materi.ls Sci.nce 2024年第2期6卷 193-200页

作者： M.i.i.i. G.N.Gerasi.ov v.F.Gromov O.J.i.egbusi.L.i.Trakhtenberg N.N.Semenov Federal Research Center for Chemi.al Physi.s of RAS MoscowRussia Uni.ersi.y of Central Flori.a OrlandoFLUSA Moscow i.sti.ute of Physi.s and Technology(State Uni.ersi.y) DolgoprudnyMoscow RegionRussia Lomonosov Moscow State Uni.ersi.y MoscowRussia

The hydrothermal synthesi. of i._(2)O_(3)and CeO_(2)–i._(2)O_(3)i. i.vesti.ated as well as the properti.s of sensor layers based on these compounds.Duri.g the synthesi. of i._(2)O_(3),i.termedi.te products i.(OH)_(3)and i.OOH are formed,whi.h are the precursors of stable cubi.(c-i._(2)O_(3))and metastable rhombohedral(rh-i._(2)O_(3))phases,respecti.ely.A transi.i.n from c-i._(2)O_(3)to rh-i._(2)O_(3)i. observed wi.h the addi.i.n of CeO_(2).The i.troducti.n of ceri.m i.to rh-i._(2)O_(3)results i. a decrease i. the sensor response to hydrogen,whi.e i. i.creases i. composi.es based on c-i._(2)O_(3).The data on the sensor acti.i.y of the composi.es correlate wi.h XPS results i. whi.h CeO_(2)causes a decrease i. the concentrati.ns of chemi.orbed oxygen and oxygen vacanci.s i. rh-i._(2)O_(3).The reverse si.uati.n i. observed i. composi.es based on c-i._(2)O_(3).Compared to i._(2)O_(3)and CeO_(2)–i._(2)O_(3)obtai.ed by other methods,the synthesi.ed composi.es demonstrate maxi.um response to H_(2)at low temperatures by 70–100℃,and have short response ti.e(0.2–0.5 s),short recovery ti.e(6–7 s),and long-term stabi.i.y.A model i. proposed for the dependence of sensi.i.i.y on the di.ecti.n of electron transfer between i._(2)O_(3)and CeO_(2).

关键词： Ceri.m oxi.e i.di.m oxi.e Nanocomposi.e Hydrothermal method Cubi. phase Rhombohedral phase Sensor response Conducti.i.y Hydrogen Response/recovery ti.e

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