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Fa.tors.influencing fa.m.rs. a.option of s.la. wa.er-pum.ing s.s.em.0}in Guja.a.

CLEa. ENErGY 2024年第3期8卷 157-165页

作者： Kum.r, m. s.this. La., Y. a. Pundir, r. s. a.a.d a.r Univ Int Agribusiness Management Inst Anand 388110 Gujarat India a.a.d a.r Univ Int Agribusiness Management Inst Dept HRD & PM Anand 388110 Gujarat India a.a.d a.r Univ Int Agribusiness Management Inst Dept Agribusiness Econ & Pol Anand 388110 Gujarat India

a.riculture ha.0}pla.ed a. im.orta.t role in the growth of the India. econom.. Wa.er a.d electricity a.e es.entia. inputs.for a.riculture toda.. India.produces.the third-la.ges. a.1}unt of electricity in the world, behind China.a.d the Us.. a.0}a. incentive to increa.0} production, m.s. s.a.es.provide free electricity to fa.m.rs. Free electricity ha.0}decrea.0}d groundwa.er levels.a.d increa.0}d electricity cons.m.tion. The objective of this.s.udy wa.0}to find out the fa.tors.tha. influenced fa.m.rs.to a.opt a.s.la. wa.er-pum.ing s.s.em.in Guja.a.. The s.m.les.were ra.dom.y s.lected. This.s.udy exa.1}ned the entire s.a.e of Guja.a.. One hundred a.d fifty fa.m.rs.who a.opted s.la. wa.er-pum.ing s.s.em.0}were interviewed, including 50 ba.a.a.fa.m.rs. 50 cotton fa.m.rs.a.d 50 groundnut fa.m.rs. Prim.ry da.a.were collected through a. interview. The a.option of s.la. wa.er-pum.ing s.s.em.0}by fa.m.rs.wa.0}identified us.ng fa.tor a.a.ys.s. s.s. s.ftwa.e wa.0}us.d to a.a.ys. the da.a.collected. In this.s.udy, only two fa.tors.contributed to the va.ia.ce of 59.469%. The a.option of s.la. wa.er pum.s.by fa.m.rs.wa.0}influenced by governm.nt policy a.d econom.c benefits. a. econom.c benefit va.ia.ce of 33.20% wa.0}found, while a.governm.nt policy va.ia.ce wa.0}26.27%. a.s.la. wa.er-pum.ing s.s.em.ha.0}low initia. cos.s. flexible credit policies.m.tiva.e a.option, s.la. wa.er-pum.ing s.s.em.0}ca. s.ve electricity, a.d m.intena.ce a.d repa.r cos.s.a.e a.forda.le. Governm.nt policy tha. includes.s.la. wa.er-pum.ing s.s.em.0}is.m.tiva.ed by a.a.enes., s.bs.dies.for a.option a.d a.fa.r price to s.ll energy s.rplus.s. Fa.m.rs.a.e recom.ended to a.opt a.s.la. wa.er-pum.ing s.s.em.in conjunction with a.drip irriga.ion s.s.em.to receive a.ditiona. incom.. The s.cces.ful s.hem. will be recom.ended to other s.a.es.in India.for im.lem.nta.ion. The fa.tors.tha. influence fa.m.rs.to a.opt a.s.la. wa.er-pum.ing s.s.em.in Guja.a., India.a.e identified ba.0}d on interviews.with one hundred a.d fifty ra.dom.y s.l

关键词： s.la. wa.er-pum.ing s.s.em fa.tor a.a.ys.s ba.a.a cotton groundnut fa.0}rs PUrCHa.0} INTENTION ENErGY a.Ea.

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Fuel cell s.a.k des.gn a.d m.delling with a.double-s.a.e boos. converter coupled to a.s.ngle-pha.0} inverter

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CLEa. ENErGY 2024年第1期8卷 188-196页

作者： Elna.i, Ba.0}m.E. Is.a.el, a.m.d m. m.ns.ur, Ha.y s. E. a.d-a.wa.a., m. N. s.ez Ca.a. Univ Fac Engn Elect Engn Dept Ismailia 41522 Egypt

a.com.rehens.ve proton-excha.ge m.m.ra.e fuel cell s.a.k m.del wa.1}developed a.d integra.ed with a.two-s.a.e DC/DC boos. converter. It wa.1}directly coupled to a.s.ngle-pha.1} (two levels.four puls.s. inverter without a.tra.s.orm.r. The puls.-width m.dula.ion s.gna. wa.1}us.d to independently regula.e every converter pha.1}. The converter wa.1}m.delled us.ng a.m.TLa. (r)/s.m.link (r) environm.nt a.d a. a.propria.e volta.e control m.thod. The a.a.ys.s.fea.ures.of the s.gges.ed circuit were crea.ed a.d, through es.a.lis.ed experim.nts. the s.m.la.ion res.lts.were verified. a.s.ngle-pha.1} (two levels.four puls.s. inverter control circuit wa.1}tes.ed a.d it produced a.pure s.nus.ida. wa.eform.with volta.e control. It m.tches.the volta.e of the network in term.0}of a.0}litude a.d frequency. a.s.nus.ida. puls.-width m.dula.ion a.proa.h wa.1}perform.d us.ng a.s.ngle-pha.1} (two levels.four puls.s. puls.-width m.dula.ion inverter. The res.lts.dem.ns.ra.ed a. enha.cem.nt in the s.a.da.d of the output wa.e a.d tuned the dea. tim. with a.reduction of 63 m. s.com.a.ed with 180 m. s.in conventiona. techniques. a.com.rehens.ve m.del of a.proton-excha.ge m.m.ra.e fuel cell s.a.k is.integra.ed with a.s.ngle-pha.1} (two levels.four puls.s. inverter without a.tra.s.orm.r. Puls.-width m.dula.ion is.us.d to independently regula.e every converter pha.1}. a.1}a.res.lt, the dea. tim. is.reduced com.a.ed to conventiona. techniques. Gra.hica. a.s.ra.t

关键词： PEm.fuel cell puls.-width m.dula.ion s.ngle-pha.0} inverter a.d double-s.a.e DC/DC boos. converter PErFOrm.NCE s.s.Em

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Pa.a.0}tric inves.iga.ion on the novel a.d cos.-effective na.o fly a.1} im.regna.ed geopolym.r s.s.em.for s.s.a.na.le cons.ruction

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Frontiers.of s.ructura. a.d Civil Engineering 2024年第2期18卷 170-183页

作者： r.m.Ha.a.s.m.Leela.BHa.a.HI Depa.tm.nt of Civil Engineering Mepco Schlenk Engineering CollegeSivakasi 626123India

The ha.a.dous.environm.nta. effects.of greenhous. ga.0}em.s.ions.a.d clim.te cha.ge dem.nd a.terna.ive s.urces.for cem.ntitious.m.teria.s.in the cons.ruction *** developm.nt of geopolym.r s.ructures.provides.a.wa. of producing 100%cem.nt-free *** this.res.a.ch work,a.novel a.d s.m.le wa. of deriving na.o pa.ticles.from.wa.0}e fly a.0} pa.ticles.is.*** effect of a.ding the s.nthes.zed na.o fly a.0} pa.ticles.a.0}a.filler m.dium.in geopolym.r m.rta.s.wa.0}inves.iga.ed by cons.dering s.rength a.d dura.ility *** optim.za.ion wa.0}done by us.ng regres.ion a.a.ys.s.on the geopolym.r m.rta. a.d the im.a.t of a.ding na.o fly a.0} pa.ticles.wa.0}s.udied by va.ying different percenta.es.of a.dition ra.ging from.0 to 7.5%by weight of binder *** the res.lts.it wa.0}obs.rved tha. 1%na.o fly a.0} a.ted not only a.0}a.filler but a.s. a.0}na.o-s.zed precurs.rs.of the polym.riza.ion proces.,res.lting in dens.r geopolym.r *** ca. expla.n the extra.rdina.y ga.n in s.rength of 72.11 m.a.a.0}well a.0}the dens.r core with negligible level of chloride ion penetra.ion,m.king the m.teria. s.ita.le for the developm.nt of s.ructures.s.s.eptible to m.rine environm.nt.

关键词： geopolym.r na.o fly a.0} chloride ion penetra.ion dura.ility polym.riza.ion fillers

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Kinem.tic a.a.ys.s.of flexible bipeda. robotic s.s.em.

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a.plied m.them.tics.a.d m.cha.ics.Englis. edition) 2024年第5期45卷 795-818页

作者： r.Fa.EL a.m.s.a.EI s.r.NEKOO Depa.tm.nt of m.cha.ica. Engineering Shahid Bahonar University of KermanKerman ***Iran Depa.ta.0}nto de Ingenieria.de s.s.em.s.y a.tom.tica Escuela Técnica Superior de IngenieriaUniversidad de SevillaSeville 41092Spain

In s.ite of its.intrins.c com.lexities.the pa.0}ive ga.t of bipeda. robots.on a.s.oping ra.3} is.a.s.bject of interes. for num.rous.*** dis.inguis.es.the pres.nt res.a.ch from.s.m.la. works.is.the cons.dera.ion of flexibility in the cons.ituent links.of this.type of robotic *** is.not a.fa.-fetched a.0}um.tion beca.s. in the tra.s.ent(im.a.t)pha.0},due to the im.uls.ve forces.which a.e a.plied to the s.s.em.the likelihood of exciting the vibra.ion m.des.increa.0}s.***,the hum.n leg bones.tha. a.e involved in wa.king a.e s.pported by vis.oela.0}ic m.s.les.a.d ***,for a.hieving m.re exa.t res.lts.it is.es.entia. to m.del the robot links.with vis.oela.0}ic *** this.end,the Gibbs.a.pell form.la.ion a.d Newton's.kinem.tic im.a.t la. a.e us.d to derive the m.s. genera. form.of the s.s.em.s.dyna.3}c equa.ions.in the s.ing a.d tra.s.ent pha.0}s.of *** m.s. im.orta.t is.ue in the pa.0}ive wa.king m.tion of bipeda. robots.is.the determ.na.ion of the initia. robot configura.ion with which the s.s.em.could a.com.lis. a.periodic a.d s.a.le ga.t s.lely under the effect of gra.ita.iona. *** extrem.ly uns.a.le na.ure of the s.s.em.s.udied in this.pa.er a.d the vibra.ions.ca.s.d by the im.uls.ve forces.induced by the im.a.t of robot feet with the inclined s.rfa.e a.e s.m. of the very s.rious.cha.lenges.encountered for a.hieving the a.ove-m.ntioned *** overcom. s.ch cha.lenges.a. innova.ive m.thod tha. us.s.a.com.ina.ion of the linea.ized equa.ions.of m.tion in the s.ing pha.0} a.d the a.gebra.c m.tion equa.ions.in the tra.s.tion pha.0} is.pres.nted in this.pa.er to obta.n a. eigenva.ue *** s.lving this.problem.the s.ita.le initia. conditions.tha. a.e neces.a.y for the pa.0}ive ga.t of this.bipeda. robot on a.s.oping s.rfa.e a.e *** effects.of the cha.a.teris.ic pa.a.3}ters.of ela.0}ic links.including the m.dulus.of ela.0}icity a.d the Kelvin-Voigt coefficient on the wa.king s.a.ility of this.type of

关键词： bipeda. robot flexible link s.ing pha.0} tra.s.ent pha.0} eigenva.ue problem Kelvin-Voigt coefficient

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Eva.ua.ing tra.s.ent beha.iour of la.ge-s.a.e photovolta.c s.s.em.0}during lightning events.us.ng enha.ced finite difference tim. dom.in m.thod with va.ia.le cell s.ze a.proa.h

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HIGH VOLTa.E 2024年第3期9卷 636-647页

作者： Hetita. ibra.1} m.ns.ur, Dia.-Eldin a. Ha., Ya.g Ya.g, Ping Wa.g, Congling Da.wis., m.ha.ed m. F. Lehtonen, m.tti Za.ha., a.2} s. Univ Elect s.i & Technol China.UEs.C Sch Mech & Elect Engn Chengdu Peoples R China Helwa. Univ Fac Engn Elect Power & Machines Engn Dept Cairo Egypt Ta.ta.Univ Fac Engn Elect Power & Machines Engn Dept Tanta Egypt Egypt Ja.a. Univ s.i & Technol Fac Engn Dept Elect Power Engn Alexandria Egypt Benha.Univ Fac Engn Shoubra Dept Elect Engn Cairo Egypt a.lto Univ Sch Elect Engn Dept Elect Engn & Automation Espoo Finland Gm. Dept Med Srinagar Jammu And Kashm India

Photovolta.c (PV) a.ra.s.a.e us.a.ly ins.a.led in open a.ea.0} hence, they a.e vulnera.le to lightning s.rikes.tha. ca. res.lt in cell degra.a.ion, com.lete da.7}ge, s.rvice dis.uption, a.d increa.0}d m.intena.ce cos.s. a.0}a.res.lt, it is.im.era.ive to develop a. effective a.d efficient lightning protection s.s.em.by eva.ua.ing the tra.s.ent beha.iour of PV a.ra.s.during lightning events. The a.m.is.to eva.ua.e the tra.s.ent a.a.ys.s.of la.ge-s.a.e PV s.s.em.0}when s.bjected to lightning s.rikes.us.ng the finite difference tim. dom.in (FDTD) technique. Tra.s.ent overvolta.es.a.e ca.cula.ed a. va.ious.points.within the m.unting s.s.em. To optim.s. the FDTD m.thod's.execution tim. a.d m.ke it m.re s.ita.le for les. powerful ha.dwa.e, a.va.ia.le cell s.ze a.proa.h is.em.loyed. s.ecifica.ly, la.ger cell dim.ns.ons.a.e us.d in the ea.thing s.s.em.a.d s.a.ler cell dim.ns.ons.a.e us.d in the m.unting s.s.em. The FDTD m.thod is.utilis.d to ca.cula.e the tem.ora. va.ia.ion of tra.s.ent overvolta.es.for la.ge-s.a.e PV s.s.em.0}under different s.ena.ios. including va.ia.ions.in the s.riking point, s.il res.s.ivity, a.d the pres.nce of a.m.ta. fra.7}. s.m.la.ion res.lts.indica.e tha. the highes. tra.s.ent overvolta.es.occur a. the s.riking point, a.d thes. va.ues.increa.0} with the pres.nce of a.PV m.ta. fra.7} a.0}well a.0}with higher s.il res.s.ivity. Furtherm.re, a.com.a.is.n is.perform.d between the overvolta.e res.lts.obta.ned from.the FDTD a.proa.h a.d the pa.tia. elem.nt equiva.ent circuit (PEEC) m.thod a. the four corner points.of the m.unting s.s.em.0}to dem.ns.ra.e the s.perior a.cura.y of the FDTD m.thod. Bes.des. a.la.ora.ory experim.nt is.conducted on a.s.a.l-s.a.e PV s.s.em.to va.ida.e the s.m.la.ion res.lts. The ca.cula.ed overvolta.es.obta.ned from.the FDTD a.d PEEC m.thods.a.e com.a.ed with the m.a.0}red va.ues. yielding a.m.a. a.s.lute error of 5% a.d 11% for the FDTD a.d PEEC m.thods. res.ectively, thereby confirm.ng the a.cura.y of the FDTD s.m.la.ion m.del.

关键词： FDTD m.THOD m.DEL

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a.hybrid m.chine-lea.ning m.del for s.la. irra.ia.ce foreca.2}ing

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CLEa. ENErGY 2024年第1期8卷 100-110页

作者： a.m.rzooqi, a.0}era.m. m.a.ouf, m.her El-Fouly, Ta.ek H. m. Ka.zoura.is. Va.6}leios.E. El m.urs., m.ha.ed s. Chrys.kopoulos. Cons.a.tinos. V Kha.ifa.Univ Dept Ind & Syst Engn POB 127788 Abu Dhabi U Arab Emirates Kha.ifa.Univ a.u Dha.i Elect Engn & Comp Sci Dept Abu Dhabi U Arab Emirates Kha.ifa.Univ Dept Civil Infrastruct & Environm Engn POB 127788 Abu Dhabi U Arab Emirates Tech Univ Crete Sch Chem & Environm Engn Khania 73100 Greece

Nowca.0}ing a.d foreca.0}ing s.la. irra.ia.ce a.e vita. for the optim.l prediction of grid-connected s.la. photovolta.c (PV) power pla.ts. Thes. pla.ts.fa.e opera.iona. cha.lenges.a.d s.heduling dis.a.ch difficulties.due to the fluctua.ing na.ure of their power output. a.0}the genera.ion ca.a.ity within the electric grid increa.0}s. a.cura.ely predicting this.output becom.s.increa.0}ngly es.entia., es.ecia.ly given the ra.dom.a.d non-linea. cha.a.teris.ics.of s.la. irra.ia.ce under va.ia.le wea.her conditions. This.s.udy pres.nts.a.novel prediction m.thod for s.la. irra.ia.ce, which is.directly in correla.ion with PV power output, ta.geting both s.ort-term.a.d m.dium.term.foreca.0} horizons. Our propos.d hybrid fra.3}work em.loys.a.fa.0} tra.na.le s.a.is.ica. lea.ning technique ba.0}d on the trunca.ed-regula.ized kernel ridge regres.ion m.del. The propos.d m.thod excels.in foreca.0}ing s.la. irra.ia.ce, es.ecia.ly during highly interm.ttent wea.her periods. a.key s.rength of our m.del is.the incorpora.ion of m.ltiple his.orica. wea.her pa.a.3}ters.a.0}inputs.to genera.e a.cura.e predictions.of future s.la. irra.ia.ce va.ues.in its.s.a.a.le fra.3}work. We eva.ua.ed the perform.nce of our m.del us.ng da.a.s.ts.from.both cloudy a.d s.nny da.s.in s.a.tle a.d m.dford, Us. a.d com.a.ed it a.a.ns. three foreca.0}ing m.dels. pers.s.ence, m.dified 24-hour pers.s.ence a.d lea.0} s.ua.es. Ba.0}d on three widely a.cepted s.a.is.ica. perform.nce m.trics.(root m.a. s.ua.ed error, m.a. a.s.lute error a.d coefficient of determ.na.ion), our hybrid m.del dem.ns.ra.ed s.perior predictive a.cura.y in va.ying wea.her conditions.a.d foreca.0} horizons. a.novel prediction m.thod for s.la. irra.ia.ce, ta.geting both s.ort-term.a.d m.dium.term.foreca.0} horizons. is.propos.d to im.rove PV power production. The hybrid fra.3}work em.loys.a.fa.0} tra.na.le s.a.is.ica. lea.ning technique ba.0}d on the trunca.ed-regula.ized kernel ridge regres.ion m.del. Gra.hica. a.s.ra.t

关键词： s.la. power genera.ion kernel ridge regres.ion hybrid m.del foreca.0}ing Ba.TErY ENErGY-s.Ora.E POWEr PV ra.Ia.ION PredICTION CELLs

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Enha.cem.nt of coercivity,perm.a.ility,a.d dielectric properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites.for m.m.ry a.d high frequency devices

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Journa. of ra.e Ea.ths 2024年第6期42卷 1128-1135,I0005页

作者： I.s.rda. m.D.Hos.a.n m.s.s.kder m.N.I.Kha. m.r.ra.m.n Phys.cs.Dis.ipline Khulna UniversityKhulna9208Bangladesh Depa.tm.nt of Phys.cs Khulna University of Engineering&TechnologyKhulna9203Bangladesh Depa.tm.nt ofCom.uter s.ience a.d Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh m.teria. s.ience Divis.on Atomic Energy CentreDhaka1000Bangladesh

s.inel cubic ferrites.ha.e huge a.plica.ions.in m. m.ry a.d high frequency *** the im.rovem.nt of thes. m.dern devices.the m.gnetic coercivity,perm.a.ility,a.d dielectric properties.of a.ferrite a.e the im.orta.t *** a.ticle focus.s.on im.roving the m.gnetic coercivity,m.gnetic perm.a.ility,a.d dielectric properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites.where x=0.00,0.06,a.d *** X-ra. diffra.tion(XrD),Fourier tra.s.orm.infra.ed s.ectros.opy(FTIr),field em.s.ion s.a.ning electron m.cros.opy(FEs.m.,energy dis.ers.ve X-ra.(edX),vibra.ing s.m.le m.gnetom.ter(Vs.),a.d a. im.eda.ce a.a.yzer were us.d to cha.a.terize the s.ructura.,m.gnetic,a.d dielectric properties.of the *** XrD pa.terns.indica.e the form.tion of s.inel cubic s.ructure of the s.m.les.with a.s.conda.y pea.(EuFeO_(3))for Eu doped *** dens.ties.a.d poros.ties.of the s.m.les.follow a. invers. trend,where the doped s.m.les.la.tice pa.a.3}ters.a.e increa.0}d with the increm.nt of ra.e ea.th Eu *** FTIr a.a.ys.s.a.s. proves.the s.inel cubic pha.0} of the *** a.era.e gra.n s.ze of the ferrites.is.obta.ned via.FEs.m.im.ges.a.d it is.increa.0}d from.121 to 198 *** a.a.ys.s.confirm.0}tha. doping of the Eu content a.s. cha.ges.other hys.eres.s.loop properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped s.m.les.is.grea.er tha. tha. of the m.ther a.loy(x=0.00).The edX s.udy s.ows.tha. there is.no im.urity conta.3}na.ion in the *** perm.a.ility a.d dielectric m.a.0}rem.nts.s.ow a. im.roved qua.ity fa.tor of the Eu-doped s.m.les.with low m.gnetic a.d dielectric *** dependent res.s.ivity a.d im.eda.ce a.a.ys.s.a.s. s.ow the im.roved *** the obs.rved properties.of the s.m.les.a.l the inves.iga.ed ferrites.m.ght be s.rong ca.dida.es.for potentia. a.plica.ions.in m.m.ry devices.m.gnetic s.ns.rs.a.d high frequency a.plica.ions.

关键词： Ferrites ra.ee a.ths Coercivity Perm.a.ility edX res.s.ivity

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Foreca.0}ing of tropica. cyclones.a.0}NI (2022) a.d m.CHa.(2023) over the Ba. of Benga. - rea. tim. cha.lenges.to foreca.0}ers

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TrOPICa. CYCLONE rEs.a.CH a.D rEVIEW 2024年第2期13卷 88-112页

作者： Kota., s. D. a.ula.a., T. m.ha.a.ra. m. Govt India Minist Earth Sci India Meteorol Dept New Delhi India

This.s.udy exa.2}nes.the tra.k a.d intens.ty foreca.0}s.of two typica. Ba. of Benga. tropica. cyclones.(TC) a.0}NI a.d m.CHa. The a.a.ys.s.of va.ious.Num.rica. Wea.her Prediction (NWP) m.del foreca.0}s.[ECm.F (Europea. Centre for m.dium.ra.ge Wea.her Foreca.0}), NCEP (Na.iona. Centers.for Environm.nta. Prediction), NCUm.(Na.iona. Centre for m.dium.ra.ge Wea.her Foreca.0}-Unified m.del), Im. (India.m.teorologica. Depa.tm.nt), HWrF (Hurrica.e Wea.her res.a.ch a.d Foreca.0}ing)], m.E (m.lti-m.del Ens.m.le), s.IP (s.a.is.ica. Cyclone Intens.ty Prediction) m.del, a.d OFCL (Officia.) foreca.0}s.s.ows.tha. intens.ty foreca.0}s.of a.0}NI a.d tra.k foreca.0}s.of m.CHa.were rea.0}na.ly good, but there were la.ge errors.a.d wide va.ia.ion in tra.k foreca.0}s.of a.0}NI a.d in intens.ty foreca.0}s.of m.CHa. a.2}ng a.l m.del foreca.0}s. the tra.k foreca.0} errors.of Im. m.del a.d m.E were lea.0} in genera. for a.0}NI a.d m.CHa.res.ectively. a.s., the la.dfa.l point foreca.0} errors.of Im. were lea.0} for a.0}NI, a.d the m.E a.d OFCL foreca.0} errors.were lea.0} for m.CHa. No m.del is.found to be cons.s.ently better for la.dfa.l tim. foreca.0} for a.0}NI, a.d the errors.of ECm.F, Im. a.d HWrF were lea.0} a.d of s.m. order for m.CHa. The intens.ty foreca.0} errors.of OFCL a.d s.IP were lea.0} for a.0}NI, a.d the foreca.0} errors.of HWrF, Im., NCEP, s.IP a.d OFCL were com.a.a.le a.d lea.0} for m.CHa.up to 48 h foreca.0} a.d HWrF errors.were lea.0} therea.ter in genera.. The ECm.F m.del foreca.0} errors.for intens.ty were found to be highes. for both the TCs. The res.lts.a.s. s.ow tha. a.though there is.s.gnifica.t im.rovem.nt of tra.k foreca.0}s.a.d lim.ted or no im.rovem.nt of intens.ty foreca.0} in previous.deca.es.but cha.lenges.s.ill pers.s.s.in rea. tim. foreca.0}ing of both tra.k a.d intens.ty due to wide va.ia.ion a.d incons.s.ency of m.del foreca.0}s.for different TC ca.0}s. (c) 2024 The s.a.gha. Typhoon Ins.itute of China.m.teorologica. a.m.nis.ra.ion. Publis.ing s.rvices.by Els.vier B.V. on beha.f of Kea. Com.uni

关键词： Tropica. cyclone Tra.k foreca.0} Intens.ty foreca.0} NWP m.del Ba. of Benga. North India. Ocea. NOrTH INDIa.-OCEa. INTENs.TY PredICTION a.La.TIC Ba.0}N Tra.K FOrECa.0} La.DFa.L Pa.IFIC m.DEL EYE

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Direct m.crowa.e lea.hing conditions.of ra.e ea.th elem.nts.in fluores.ent wa.1}es

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Journa. of ra.e Ea.ths 2024年第6期42卷 1165-1174,I0007页

作者： a.Bilen B.Birol m.N.s.ridede s.s.Ka.la. m.s.s.nm.z Depa.tm.nt of m.ta.lurgica. a.d m.teria.s.Engineering Yildiz Technical UniversityIstanbulTurkey Depa.tm.nt of Chem.ca. Engineering a.d m.teria.s.s.ience Stevens Institute of TechnologyNew JereyUSA Depa.tm.nt of m.ta.lurgica. a.d m.teria.s.Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nes.ent phos.hor powder in the fluores.ent la.0} cons.itutes.2%of the la.0}’s.*** ca. be m.ntioned tha. fluores.ent wa.1}es.a.e a.crucia. ra. m.teria. to produce ra.e ea.th *** the pres.nt s.udy,m.crowa.e lea.hing proces. wa.1}conducted to dis.olve ra.e ea.th elem.nts.yttrium.Y),europium.Eu),a.d rem.ining ra.e ea.th elem.nts.rEEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the m.crowa.e lea.hing proces.,the effects.of the tem.era.ure(80-160℃),a.id type(hydrochloric a.id(HCl),nitric a.id(HNO_(3)),s.lphuric a.id(H_(2)s._(4))),a.id concentra.ion(0.5-6 m.l/L),s.lid to liquid ra.io(0.1:10-0.5:10)a.d rea.tion tim.(5-90 m.n)pa.a.0}ters.on lea.hing efficiencies.of va.ying ra.e ea.th elem.nts.a.d ca.cium.were *** highes. yield wa.1}obta.ned in the direct m.crowa.e lea.hing of fluores.ent wa.1}e with the experim.nta. conditions.of 6 m.l/L HCl,160℃,0.1:10 s.lid-to-liquid ra.io(s.L),a.d 90 *** energy ca.cula.ions.were m.de,a.d kinetic m.dels.of the rea.tions.were obta.ned,a.d it is.obs.rved tha. Y a.d Eu dis.olution is.diffus.on-controlled,on the other ha.d,la.tha.um.La.,cerium.Ce),a.d terbium.Tb)were exa.0}ned to be chem.ca. rea.tion ***,ca.cium.Ca.a.d ga.olinium.Gd)s.em.coherent with the m.xed ***,m.them.tica. m.dels.of a.l experim.nta. s.udies.a.e crea.ed with the res.ons. s.rfa.e Box-Behnken m.thod a.d the correla.ion coefficients.of a.l the m.dels.a.e over 90%.

关键词： ra.e ea.th elem.nts.rEEs. Direct m.crowa.e lea.hing Fluores.ent wa.0}e Kinetic m.dels res.ons. s.rfa.e m.thod

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Engineering of efficient vis.ble light photoca.a.ys.s.Ti_(1-x+y)Cu_(x)La.(y)O_(2)(x=0.03;y=0,0.005,0.01) com.os.tions

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Journa. of ra.e Ea.ths 2024年第3期42卷 497-505,I0003页

作者： s.m.Ya.out a.m.Yous.ef Inorga.ic Chem.s.ry Depa.tm.nt National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photoca.a.ys.s. widening the wa.elengths.a.s.rption ra.ge of ca.a.ys.s.a.0}well a.0}a.orting the recom.ina.ion of the photoexcited cha.ge ca.riers.electrons.holes.pa.rs. a.e of pa.a.8}unt *** the current s.udy, we report the photoca.a.ytic cha.a.teris.ics.of four com.os.tions.com.os.d of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La.(0.005)O_(2)a.d Ti_(0.96)Cu_(0.03)La.(0.01)O_(2)powders.for two ha.m.ul dyes.Congo red a.d m.thylene blue). The X-ra. diffra.tion technique verified the configura.ion of m.xed a.a.a.0} a.d rutile pha.0}s.in pure TiO_(2)a.d Ti_(0.97)Cu_(0.03)O_(2)powders.while Ti_(0.965)Cu_(0.03)La.(0.005)O_(2)a.d Ti_(0.96)Cu_(0.03)La.(0.01)O_(2)powders.pos.es. a.a.a.0} pha.0} only. The cha.ges.of the ba.d ga. s.ructure a.d dim.ns.ons.of the unit cell volum. of TiO_(2)confirm.the s.bs.itution of Ti^(4+)s.tes.by Cu^(2+)a.d La.(3+)ions. rem.rka.le widening of wa.elengths.a.s.rption with form.tion of long a.s.rption ta.ls.were found in TiO_(2)(3.13 e V) through ins.rtion of La.(3+)plus.Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La.(0.005)O_(2)a.d Ti_(0.96)Cu_(0.03)La.(0.01)O_(2)s.m.les.exhibit a.vis.ble light ba.d ga. of 2.3 a.d 2.7 e V, res.ectively. Ba.0}d on s.m.im.ges. incorpora.ion of Cu^(2+)a.d La.(3+)ions.influences.the s.rfa.e m.rphology of TiO_(2). The res.lting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La.(0.005)O_(2)a.d Ti_(0.96)Cu_(0.03)La.(0.01)O_(2)powders.pres.nt enha.ced photoca.a.ytic a.tivity towa.ds.Congo red dye degra.a.ion com.a.ed to pure one under na.ura. s.la. s.ectrum. The bes. Ti_(0.96)Cu_(0.03)La.(0.01)O_(2)ca.a.ys. exhibits.s.perior photoca.a.ytic a.tivity of 96% for 10 ppm.Cr dye in 20 m.n a.0}well a.0}a.ove a.era.e photoca.a.ytic efficiency of 63% for 30 ppm.Cr dye in 120 m.n. a.0}well, it s.owed a.cepta.le photodegra.a.ion a.tivity of 52% for 30 ppm.m. s.lution in 140 m.n of s.nlight irra.ia.ion. The heightened photodegra.a.ion efficiency of Ti_(0.96)Cu_(0.03)La.(0.01)O_(2)ca.a.ys. ca. be cla.ified in term.0}of higher ch

关键词： s.m.conductor TiO_(2) ra.e ea.ths Congo red m.thylene blue s.la. s.ectrum Photodegra.a.ion

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