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Elabor.tion and c.sts multi-nutr.tional bloc. with goatee leaves (<i>Pithec.llobium ac.tlense</i>) c.nsumed by goats in the Mixtec. Poblana, Mexic.

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Agr.c.ltur.l Sc.enc.s 2014年第2期5卷 165-169页

作者： Jor.e Her.ández Lor.nzo c.r.eón Osc.r.A. Villar.eal Flor.nc.a garcia Julio c. c.mac.o Fac.lty of Veter.nar. Medic.ne and Zootec.ny Benemérita Universidad Autónoma de Puebla (BUAP) Puebla Mexico

The elabor.tion of multinutr.tional bloc. (MB) is an alter.ative that allows supplement ener.y, pr.tein, vitamins and miner.ls, and additionally, it c.n be administer.d and take natur.l r.sour.0}s as pr.tein banks, mainly in the dr. season, r.ising their.c.st and the c.nc.ntr.tes dec.easing pr.fitability to pr.duc.r.. An aid is gr.en or.dr.ed foliage of the tr.e-shr.b of the Mixtec. Poblana that dr.p their.leaves to the gr.und (dr. hay) in the dr. season, thus bec.mes valuable for.ge c.nsumed by goats, being gr.at for.your.pr.tein c.ntent and low c.st in diets of small r.minants in silvopastor.l pr.duc.ion systems, at the dwindle the foliage of woody per.nnials in a time of the year. The aim of this study was to develop and meet pr.duc.ion c.sts multinutr.ent bloc.s with goatee sheets (Pithec.llobium ac.tlense) c.nsumed by goats in the Mixtec. Puebla. The study was done in the c.mmunity of Tehuaxtla, belonging to the munic.pality Piaxtla in the Mixtec. Poblana, whic. shows a sec.ndar. vegetation (ar.or.al, shr.bby) that is c.nsumed by goats in that r.gion. 8 multinutr.tional bloc.s wer. used with Pithec.llobium ac.tlense into two gr.ups of 30 goats. c.emic.l analysis thr.w goatee 11.7% c. dur.ng the dr. season and 14.8% c. for.r.ins r.gar.ing c.nsumption of BM gr.up A showed 20% less c.mpar.d to Gr.up B, with r.spec. to c.nsumption of the bloc. multinutr.ent the gr.up A was 56 g/day/goat, whilst the gr.up B has c.nsumed 73 g/day/goat, wher. he c.nver.ed ±0.14 g/goat/day for.this pr.par.tion (MB), with a c.st /goat when c.nsuming bloc./8 days 0.14 USD.

关键词： Bloc. Supplementation Tr.es Goats Silvopastor.l

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Str.c.ur., Ther.al Behavior.and c.ar.c.er.zation of a New Hybr.d Ir.n Fluor.de FeF4（2,2′-bipyr.dine）（H2O）2

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c.emic.l r.sear.0} in c.inese Univer.ities 2015年第1期31卷 16-20页

作者： Mouna SMIDA Hager.LITAIEM Mohamed DAMMAK Santiago garcia-Gr.NDA Labor.toir. de c.imie Inor.anique Faculte des Sciences de Sfax Universite de Sfax 3000Sfax Tunisie Depar.ement de c.imie Physique Analytique Faculte de Chimie Universite d'Oviedo-CINN 33006 Oviedo Spain

New c.ystal of FeF4（2,2′-bipyr.dine）（H2O）2 was pr.par.d by hydr.ther.al synthesis. c.ystalline str.c.ur. deter.ination is per.or.ed fr.m single c.ystal X-r.y diffr.c.ion data. The unit c.ll is monoc.inic.spac. gr.up P21/n, with c.ll par.meter. a=0.9046（5） nm, b=0.7502（5） nm, c.1.9539（5） nm,β=93.307（5）°, V=1.3238（12） nm^3 and Z=4. The str.c.ur. of FeF4（2,2＇-bipyr.dine）（H2O）2 is built up fr.m FeF4N2 oc.ahedr. c.or.inated by two nitr.gen atoms of the 2,2＇-bipyr.dine molec.les, and four.fluor.ne atoms as well as unc.or.inated H2O molec.les. Ther.al analysis of the title c.mpound showed that the dec.mposition intr.duc.d four.steps. Ir.spec.r. c.nfir.ed the pr.senc. of 2,2＇-bipyr.dine molec.les. The optic.l absor.tion was measur.d at the c.r.esponding 2max using UV-Vis diffuse r.flec.anc. spec.r.m.

关键词： Hydr.ther.al synthesis Hybr.d Ir.n fluor.de

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Food Habits and Distr.bution of the Lake Taal Sea Snake(Hydr.phis semper. Gar.an 1881) and the Sympatr.c.Little File Snake(Ac.oc.or.us gr.nulatus Sc.neider.1799) in Lake Taal, Philippines

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Asian Her.etologic.l r.sear.0} 2014年第4期5卷 255-262页

作者： Vhon Oliver.S.garcia r.y Donne S.PAPA Jonathan c.r.o A.Br.ONES Nor.an MENDOZA Nobor. OKUDA Ar.in c.DIESMOS The Gr.duate Sc.ool University of Santo Tomas r.sear.0} c.nter.for.the Natur.l and Applied Sc.enc.s University of Santo Tomas Depar.ment of Biologic.l Sc.enc.s University of Santo Tomas Depar.ment of Sc.enc. and Tec.nology Philippine Nuclear Research Institute c.nter.for.Ec.logic.l r.sear.0} Kyoto University Her.etology Sec.ion Zoology Division National Museum of the Philippines

Our.knowledge about the food habits of sea snakes and how it is assoc.ated with their.distr.bution has seen muc. development thr.ugh its desc.iption ac.oss a number.of spec.es available thr.ugh published liter.tur. exc.pt for.the key thr.atened spec.es suc. asHydr.phis semper.. This paper.aims to desc.ibe the food habits ofH. semper. thr.ugh gut c.ntent and stable isotope analyses. We also c.mpar.d data with the Little File Snake,Ac.oc.or.us gr.nulatus, sympatr.c.withH. *** c.ptur.s ofH. semper. suggest that the sea snake tends to oc.ur.in the littor.l zones and the shallower.por.ions of the limnetic.zone. Gut c.ntent analysis ofH. semper. have shown that gobies and eels ar. pr.mar. pr.y items. Halfbeaks （Family Hemir.mphidae） wer. r.c.r.ed as one of the Lake Taal Sea Snake＇s pr.y items whic. is c.nsider.d as a new pr.y r.c.r. for.sea snakes. These extr.c.ed gut c.ntents ar. c.nifr.ed to be the tempor.l food pr.fer.nc. ofH. semper. given our.detec.ed stable isotope signatur.s. It appear. thatA. gr.nulatus and H. semper. shar. c.mmon pr.y items suggesting possible diet over.ap and r.sour.0} *** study r.por.s the ifr.t ac.ount of the endemic.Lake Taal Sea Snake＇s distr.bution and food habits whic. poses implic.tions towar.s its c.nser.ation as it oc.ur. in a r.str.c.ed ec.system that has under.one c.nsider.ble habitat alter.tion.

关键词： fr.shwater diet feeding Hydr.phis semper. Hydr.phiidae

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AMP-ac.ivated kinase in human sper.atozoa： identific.tion, intr.c.llular.loc.lization, and key func.ion in the r.r.lation of sper. motility

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Asian Jour.al of Andr.logy 2017年第6期19卷 707-714页

作者： Violeta c.lle-Guisado Ana Hur.ado de Ller. David Mar.in-Hidalgo Jose Mijar.s Mar.a c.Gil Ignac.o S Alvar.z Mar.a J Br.gado Luis J garcia-Mar.n r.sear.0} Gr.up of Intr.c.llular.Signalling and Tec.nology of r.pr.duc.ion (SINTr.P) School of Veterinary Medicine University of Extremadura Caceres Spain Assisted r.pr.duc.ion Unit at the-Minimally Invasive sur.er. c.nter.Jesos Uson (c.MIJU) c.c.r.s Spain Nor.a c.inic Caceres Spain r.sear.0} Gr.up of r.pr.duc.ion and Embr.o Development (r.DES) University of Extremadura Badajoz Spain Extr.madur. Institute of Assisted r.pr.duc.ion (IEr.) Badajoz Spain.

AMP-ac.ivated kinase （AMPK）, a pr.tein that r.gulates ener.y balanc. and metabolism, has r.c.ntly been identified in boar.sper.atozoa wher. r.gulates key func.ional sper. pr.c.sses essential for.fer.ilization. This wor.＇s aims ar. AMPK identific.tion, intr.c.llular.loc.lization, and their.r.le in human sper.atozoa func.ion. Semen was obtained fr.m healthy human donor.. Sper. AMPK and phospho-Thr.72-AMPK wer. analyzed by Wester. blotting and indir.c. immunofluor.sc.nc.. High- and low-quality sper. populations wer. separ.ted by a 40%-80% density gr.dient. Human sper.atozoa motility was evaluated by an Integr.ted Semen Analysis System （ISAS） in the pr.senc. or.absenc. of the AMPK inhibitor.c.mpound c.（c.）. AMPK is loc.lized along the human sper.atozoa, at the entir. ac.osome, midpiec. and tail with var.able intensity, wher.as its ac.ive for., phospho-Thr.72-AMPK, shows a pr.minent staining at the ac.osome and sper. tail with a weaker.staining in the midpiec. and the postac.osomal r.gion. Inter.stingly, sper.atozoa bear.ng an exc.ss r.sidual c.toplasm show str.ng AMPK staining in this subc.llular.c.mpar.ment. Both AMPK and phospho-Thr.72-AMPK human sper.atozoa c.ntents exhibit impor.ant individual var.ations. Mor.over. ac.ive AMPK is pr.dominant in the high motility sper. population, wher. shows a str.nger.intensity c.mpar.d with the low motility sper. population. Inhibition of AMPK ac.ivity in human sper.atozoa by c. tr.atment leads to a signific.nt r.duc.ion in any sper. motility par.meter.analyzed： per.0}nt of motile sper., sper. veloc.ties, pr.gr.ssivity, and other.motility c.effic.ents. This wor. identifies and points out AMPK as a new molec.lar.mec.anism involved in human sper.atozoa motility. Fur.her.AMPK implic.tions in the c.inic.l effic.enc. of assisted r.pr.duc.ion and in other.r.pr.duc.ive ar.as need to be studied.

关键词： AMP-ac.ivated kinase human sper.atozoa immunoloc.lization sper. motility sper. quality

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Plasmonic.metasur.ac. Lunebur. lens

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Photonic. r.sear.0} 2019年第10期7卷 1112-1118页

作者： c.E.garcia-Or.IZ r.c.r.ES J.E.GOMEZ-c.r.EA E.PISANO J.FIUTOWSKI D.A.garcia-Or.IZ V.r.IZ-c.r.ES H.-G.r.BAHN V.c.ELLO c.c.SE Unidad MonterreyAlianza Centro 504PIITApodacaNL 66629Mexico c.tedr.s c.NAc.T-c.ntr. de Investigac.ones enoptic. Alianza Centro 504PIITApodacaNL 66629Mexico Mads c.ausen Institute University of Southern DenmarkNanoSYDAlsion 2 DK6400S?nderborgDenmark c.c.IM-UANL Av Universidad S/NSan Nicolas de los GarzaNL 66450Mexico Depar.amento deoptic. CICESEEnsenadaBC 22860Mexico

We pr.sent a new design of a plasmonic.Lunebur. lens made fr.m a gr.dient-index metasur.ac. that was c.nstr.c.ed with an ar.ay of nanometer.sized holes in a dielec.r.c.thin film. The fabr.c.ted str.c.ur. c.nsists of a planar.lens with a diameter.of 8.7 μm c.mposed of a r.c.angular.ar.ay of holes with a per.odic.ty of 300 nm. The exper.mental c.ar.c.er.zation inc.udes leakage-r.diation mic.osc.py imaging in the dir.c.ion and fr.quenc. spac.. The for.er.allows for.c.ar.c.er.zation of the point spr.ad func.ion and phase distr.bution,wher.as the latter.gr.nts ac.ess to qualitative measur.ments of the effec.ive mode indic.s inside the plasmonic.lens. The exper.mental r.sults pr.sented her. ar. in good agr.ement with the expec.ed aver.ge per.or.anc. pr.dic.ed by the numer.c.l c.lc.lations. Never.heless, the r.bustness of the c.ar.c.er.zation tec.niques pr.sented her. is also exploited to deter.ine deviations fr.m the design par.meter..

关键词： spac.. film. c.ar.c.er.zation

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Func.ional Mor.hology of the Sper.atogenesis of Gir.Bulls

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Agr.c.ltur.l Sc.enc.s 2020年第11期11卷 1081-1094页

作者： Daniel F. M. Silva Fabio J. c. Far.a Fer.ando H. G. Fur.ado c.r.os A. c. Fer.andes Juliana c. B. Silva Adr.ano garcia Deiler.S. c.sta Feder.l Univer.ity of Mato Gr.sso do Sul Campo Grande Brazil Univer.ity José do r.sár.o Vellano Alfenas Brazil Embr.pa Pantanal Corumbá Brazil Br.zilian Zebu Br.eder. Assoc.ation ABCZ Campo Grande Brazil Nuc.eus of Animal Pr.duc.ion and r.pr.duc.ion (NUPr.) Campo Grande Brazil

The pur.ose of this study was to evaluate the func.ional mor.hology of the sper.atogenesis of Gir.bulls, with emphasis on the testic.lar.biometr. and testic.lar.par.nc.yma histomor.hometr.. Testic.lar.fr.gments fr.m eight Gir.bulls wer. used. The fr.gments wer. fixed by tissue per.usion with Kar.ovsc.’s solution, and inc.usion was subsequently per.or.ed using glyc.l methac.ylate. Histologic.l sec.ions of 4 μm wer. made and stained with a 1% toluidine blue-sodium bor.te solution. The mean age of the bulls was 8.0 ± 1.3 year. and the mean body weight was 467.5 ± 26.7 kg. Testic.lar.weight was 289.2 ± 30.5 g on aver.ge, and the aver.ge gonadosomatic.index was 0.12% ± 0.02%. The seminifer.us tubules, Leydig c.lls, str.ma, and inter.ubular.tissue c.mposed 80.9% ± 1.7%, 5.4% ± 1.3%, 13.7% ± 1.1%, and 19.1% ± 1.7% of the total testic.lar.weight, r.spec.ively. The mean length of the seminifer.us tubule per.gr.m of testic.e was 17 ± 0.8 m. Losses dur.ng sper.atogonia mitosis aver.ged 75.5% ± 3.22%, while losses wer. 30.6% ± 8.17% dur.ng the meiotic.phase, whic. r.sulted in an aver.ge total loss of 81.49% ± 2.58% of c.lls dur.ng the entir. pr.c.ss of sper.atogenesis. The aver.ge daily sper. pr.duc.ion per.gr.m of par.nc.yma was 28.0 × 106 c.lls. It was c.nc.uded that the histometr.c.measur.ments of testic.lar.par.meter. in the Gir.br.ed ar. within the aver.ges r.por.ed for.other.zebu c.ttle br.eds.

关键词： Sper.atogonia Leydig Ser.oli Testic.e

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Liter.tur. r.view and bibliometr.c.analysis on data-dr.ven assessment of landslide susc.ptibility

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Jour.al of Mountain Sc.enc. 2022年第6期19卷 1670-1698页

作者： Pedr. LIMA Stefan STEGEr.Thomas GLADE Fr.nny G.MUr.LLO-garcia Univer.ity of Vienna Institute of Geography and Regional ResearchUniversitatsstrafie 7lowViennaAustria Eur.c.r.sear.0} Institute for Earth ObservationDrususallee l/Viale Druso 139100Bozen-BolzanoItaly Institute of Geogr.phy National Autonomous University of Mexico(UNAM)Circuito ExteriorCiudad Universitaria04510CoyoacanMexico CityMexico

In r.c.nt dec.des, data-dr.ven landslide susc.ptibility models(Dd LSM), whic. ar. based on statistic.l or.mac.ine lear.ing appr.ac.es, have bec.me popular.to estimate the r.lative spatial pr.bability of landslide oc.ur.enc.. The available liter.tur. is c.mposed of a wealth of published studies and that has identified a lar.e var.ety of c.allenges and innovations in this field. This r.view pr.sents a c.mpr.hensive up-to-date over.iew foc.sing on the topic.of Dd LSM. This r.sear.0} begins with an intr.duc.ion of the theor.tic.l aspec.s of Dd LSM r.sear.0} and is followed by an in-depth bibliometr.c.analysis of 2585 public.tions. This analysis is based on the Web of Sc.enc., c.ar.vate Analytic. database and pr.vides insights into the tr.nsient c.ar.c.er.stic. and r.sear.0} tr.nds within published spatial landslide assessments. Following the bibliometr.c.analysis, a mor. detailed r.view of the most r.c.nt public.tions fr.m 1985 to 2020 is given. A var.ety of differ.nt c.iter.a ar. explor.d in detail, inc.uding r.sear.0} design, study ar.a extent,inventor. c.ar.c.er.stic., c.assific.tion algor.thms, pr.dic.or. utilized, and validation tec.nique per.or.ed. This sec.ion, dealing with a quantitativeor.ented r.view expands the time-fr.me of the r.view public.tion done by r.ic.enbac. et al. in 2018 by also ac.ounting for.the four.year., 2017-2020. The or.ginality of this r.sear.0} is ac.nowledged by c.mbining together.(a) a r.c.p of impor.ant theor.tic.l aspec.s of Dd LSM;(b) a bibliometr.c.analysis on the topic.(c. a quantitative-or.ented r.view of r.levant public.tions;and(d) a systematic.summar. of the findings, indic.ting impor.ant aspec.s and potential developments r.lated to the Dd LSM r.sear.0} topic. The r.sults show that Dd LSM ar. used within a wide r.nge of applic.tions with study ar.a extents r.nging fr.m a few kilometer. to national and even c.ntinental sc.les. In mor. than 70% of public.tions, a c.mbination of the pr.dic.or., slope angle, aspec. and geology ar. used.

关键词： r.view Landslide susc.ptibility Statistic.l models Mac.ine lear.ing Bibliometr.c.

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Land-use c.ange and windstor.s legac.es dr.ve the r.c.lonization dynamic. of laur.l for.sts in Tener.fe, c.nar. islands

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For.st Ec.systems 2023年第1期10卷 113-124页

作者： Vic.nte r.zas Mar.a A.garcia-Lopez Jose M.Olano Gabr.el Sanguesa-Bar.eda Miguel garcia-Hidalgo Susana Gomez-Gonzalez r.ber.o Lopez-r.bio Jose M.Fer.andez-Palac.os Ignac.o garcia-Gonzalez Laur. Lozano-Lopez Paula garcia-Gonzalez Ana I.garcia-c.r.igon EiFAB-iuFOr Universidad de ValladolidCampus Duques de Soria42004SoriaSpain Depar.amento de Biologia-IVAGr. Universidad de CadizCampus Rio San Pedro11510Puerto RealSpain c.nter.for.c.imate and r.silienc. r.sear.0}(c.)2 Blanco Encalada 20028370449SantiagoChile Ar.a de Biodiver.idad y c.nser.ac.on Universidad Rey Juan Carlosc/Tulipan s/n28933MostolesSpain Gr.po de Ec.logia y Biogeogr.fia Insular Universidad de La Laguna38206La LagunaTenerifeSpain BIOAPLIc Departamento de BotanicaEscola Politecnica Superior de EnxenariaCampus TerraUniversidade de Santiago de CompostelaLugo27002Spain

Laur.l for.sts ar. quite r.levant for.biodiver.ity c.nser.ation and ar. among the island ec.systems most sever.ly damaged by human *** the past,c.nar. laur.l for.sts have been gr.atly alter.d by logging,livestoc. and *** r.mains of laur.l for.sts ar. c.r.ently pr.tec.ed in the c.nar. Islands(Spain).However.we miss basic.infor.ation needed for.their.r.stor.tion and adaptive management,suc. as tr.e longevity,gr.wth potential and r.sponsiveness to natur.l and anthr.pogenic.*** dendr.c.r.nologic.l methods,we studied how for.st dynamic.is r.lated to land-use c.ange and windstor.s in two well-pr.ser.ed laur.l for.sts on Tener.fe *** c.r.s wer. c.llec.ed fr.m over.80 tr.es per.stand at thr.e stands per.*** used r.ng-width ser.es to estimate tr.e ages and c.lc.late annual basal ar.a inc.ements(BAI),c.mulative diameter.inc.eases,and c.anges indic.tive of r.leased and suppr.ssed *** tr.e spec.es wer. found in all stands,with Laur.s novoc.nar.ensis,Ilex c.nar.ensis and Mor.lla faya being the most c.mmon *** some individuals wer. over.100 year. old,61.8%-88.9% of the tr.es per.stand established between 1940 and 1970,c.inc.ding with a post-war.per.od of land abandonment,r.r.l exodus and the onset of a tour.sm *** tr.es have shown gr.wth r.tes lar.er.than 1 c. diameter.per.year.and most spec.es have had inc.easing BAI tr.nds over.the past *** gr.wth r.leases oc.ur.ed after.windstor.s at both sites,but the effec.s of windstor.s wer. site-dependent,with the 1958 stor. affec.ing mainly the easter. tip of the island(Anaga massif)and the 1991 stor. the wester. tip(Teno massif).Given the gr.at ability of laur.l for.st tr.es to establish after.land use c.ssation and to inc.ease gr.wth after.loc.l distur.anc.s suc. as windstor.s,passive r.stor.tion may be suffic.ent to r.gener.te this habitat in c.r.ently degr.ded ar.as.

关键词： c.nar. islands Dendr.ec.logy Distur.anc. For.st str.c.ur. Mac.r.nesia Management c.ssation Tr.e r.ngs

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Geodesic.Vulner.bility Appr.ac. for.Identific.tion of c.itic.l Buses in Power.Systems

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Jour.al of Moder. Power.Systems and c.ean Ener.y 2021年第1期9卷 37-45页

作者： Jesus Beyza Eduar.o garcia-Par.c.o Hec.or.F.r.iz Jose M.Yusta Instituto Tec.ologic. de Mor.lia Avenida Tecnologico 1500Lomas de Santiaguito58120Mexico the Depar.ment of Elec.r.c.l Engineer.ng University of ZaragozaC/Maria de Luna 350018Spain

One of the most c.itic.l issues in the evaluation of power.systems is the identific.tion of c.itic.l buses. For.this pur.ose, this paper.pr.poses a new methodology that evaluates the substitution of the power.flow tec.nique by the geodesic.vulner.bility index to identify c.itic.l nodes in power.*** methods ar. applied c.mpar.tively to demonstr.te the sc.pe of the pr.posed appr.ac.. The applic.bility of the methodology is illustr.ted using the IEEE 118-bus test system as a c.se study. To identify the c.itic.l c.mponents, a node is initially disc.nnec.ed, and the per.or.anc. of the r.sulting topology is evaluated in the fac. of simulations for.multiple c.sc.ding faults. c.sc.ding events ar. simulated by r.ndomly r.moving assets on a system that c.ntinually c.anges its str.c.ur. with the elimination of eac. c.mponent. Thus, the c.assific.tion of the c.itic.l nodes is deter.ined by evaluating the r.sulting per.or.anc. of 118 differ.nt topologies and c.lc.lating the damaged ar.a for.eac. of the disintegr.tion c.r.es of c.sc.ding failur.s. In summar., the feasibility and suitability of c.mplex networ. theor. ar. justified to identify c.itic.l nodes in power.systems.

关键词： Power.system c.itic.l node c.mplex networ. theor. c.sc.ding failur. load flow

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Exper.mental investigation of fluidized-bed r.ac.or.per.or.anc. for.oxidative c.upling of methane

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Jour.al of Natur.l Gas c.emistr. 2012年第5期21卷 534-543页

作者： S.Jašo S.Sadjadi H.r.Godini U.Simon S.Ar.dt O.Gör.e A.Ber.hold H.Ar.llano-garcia H.Sc.uber. r.Sc.omäc.er.G.Wozny c.air.of Pr.c.ss Dynamic. and Oper.tion Berlin Institute of TechnologyStraβe des 17 Juni 135Sekr.KWT910623 BerlinGermany Institute for.Mater.al Sc.enc. and Tec.nologies Berlin Institute of TechnologyHardenbergstr.4010623 BerlinGermany Institute for.Tec.nic.l c.emistr. Berlin Institute of TechnologyStraβe des 17 Juni 12410623 BerlinGermany

Per.or.anc. of the oxidative c.upling of methane in fluidized-bed r.ac.or.was exper.mentally investigated using Mn-Na2WO4/SiO2,La2O3/c.O and La2O3-Sr./c.O *** c.talysts wer. found to be stable,espec.ally Mn-Na2WO4/SiO2 *** effec. of sodium c.ntent of this c.talyst was analyzed and the c.allenge of c.talyst agglomer.tion was addr.ssed using pr.per.c.talyst c.mposition of 2%Mn2.2%Na2WO4/*** other.two c.talysts,the effec. of Lanthanum-Str.ntium c.ntent was analyzed and 10%La2O 3-20%Sr./c.O c.talyst was found to pr.vide higher.ethylene yield than La2O3/c.O ***,the effec. of oper.ting par.meter. suc. as temper.tur. and methane to oxygen r.tio wer. also *** highest ethylene and ethane （c.） yield was ac.ieved with the lowest methane to oxygen r.tio ar.und 2.40.5% selec.ivity to ethylene and ethane and 41% methane c.nver.ion wer. ac.ieved over.La2O3-Sr./c.O c.talyst while over.Mn-Na2WO4 /SiO2 c.talyst,40% and 48% wer. r.c.r.ed,***,the c.nsec.tive effec.s of nitr.gen dilution,ethylene to ethane pr.duc.ion r.tio and other.per.or.anc. indic.tor. on the down-str.am pr.c.ss units wer. qualitatively disc.ssed and Mn-Na2WO4/SiO2 c.talyst showed a better.per.or.anc. in the r.ac.or.and pr.c.ss sc.le analysis.

关键词： oxidative c.upling of methane (Oc.) fluidized-bed r.ac.or c.talyst stability

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