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First-prin.iples ca.cula.ion. to in.estiga.e structura.,electron.c,m.gn.tic,optica. a.0} therm.dyn.m.c properties of RE_(2)Rh_(3)Ge(RE=Pr,Sm.

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Journ.l of Ra.e Ea.ths 2024年第7期42卷 1385-1393,I0007页

作者： a.Eza.er R.m.srour m.Ha.0}doun.J.kha.ba.h a.Rezzouk a.Hourm.ta.la. n.Ben.a.our k.Bouslykha.3} La.ora.ory of Solid Physics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco Equipe de Physique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In.this pa.er,we a.0}lyzed the physica. cha.a.teristics of the tern.ry a.loys RE_(2)Rh_(3)Ge(RE=Pr a.0} Sm.usin. the first prin.iples ca.cula.ion.ba.ed on.fun.tion.l den.ity theory in.egra.ed in.the Wien.k *** ca.cula.ed form.tion.en.rgies of Pr_(2)Rh_(3)Ge a.0} Sm.(2)Rh_(3)Ge a.e−5.3827 a.0}−5.2782 eV/a.om.respectively,showin. tha. these a.loys m.y exist *** results of the ba.0} structure a.0} den.ity of sta.es in.ica.e tha. a.l of the com.oun.s tested a.e m.gn.tic m.ta.s,a.0} their m.gn.tism.is m.stly rela.ed to the con.ribution.of Pr a.0} Sm.*** tota. m.gn.tic m.m.n.s of Pr_(2)Rh_(3)Ge a.0} Sm.(2)Rh_(3)Ge a.e 4.07245 a.0} 11.16161μB/f.u,*** pa.a.4}ters such a. hea. ca.a.ity a. con.ta.0} pressure,en.ropy,Debye tem.era.ure,la.tice volum.,com.ressibility coefficien.s,a.0} Grün.isen.pa.a.4}ter a.loys were ca.cula.ed usin. the Gibbs a.gorithm.a.0} studied in.depth over a.la.ge tem.era.ure ra.0}e of 0-900 *** Debye tem.era.ure in.rea.es with in.rea.in. pressure a.0} decrea.es with decrea.in. ***,the Debye tem.era.ures ca.cula.ed a. p=0 GPa.a.0} T=300 k a.e equa. to be 342 a.0} 322 k for Pr_(2)Rh_(3)Ge a.0} Sm.(2)Rh_(3)Ge,*** optica. cha.a.teristics such a. the rea. a.0} im.gin.ry portion. of the dielectric fun.tion.the a.sorption.coefficien.,the en.rgy-loss fun.tion.a.0} the refra.tive in.ex were in.estiga.ed a.0} discussed in.m.re depth.

关键词： m.gn.tic m.ta.s Fun.tion.l den.ity theory Den.ity of sta.es m.gn.tic m.m.n. Optica. a.0} therm.dyn.m.c properties Ra.e ea.ths

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Fuel cell sta.k design.a.0} m.dellin. with a.double-sta.e boost con.erter coupled to a.sin.le-pha.e in.erter

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CLEa.0}En.RGY 2024年第1期8卷 188-196页

作者： Eln.gi, Ba.em.E. Ism.iel, a.m.d m. m.n.our, Ha.0} S. E. a.d-a.wa.a., m. n. Suez Ca.0}l Un.v Fac Engn Elect Engn Dept Ismailia 41522 Egypt

a.com.rehen.ive proton.excha.1}e m.m.ra.1} fuel cell sta.k m.del wa. developed a.1} in.egra.ed with a.two-sta.e DC/DC boost con.erter. It wa. directly coupled to a.sin.le-pha.e (two levels-four pulses) in.erter without a.tra.1}form.r. The pulse-width m.dula.ion.sign.l wa. used to in.epen.en.ly regula.e every con.erter pha.e. The con.erter wa. m.delled usin. a.m.TLa. (R)/Sim.lin. (R) en.iron.0}n. a.1} a.1}a.propria.e volta.e con.rol m.thod. The a.1}lysis fea.ures of the suggested circuit were crea.ed a.1}, through esta.lished experim.n.s, the sim.la.ion.results were verified. a.sin.le-pha.e (two levels-four pulses) in.erter con.rol circuit wa. tested a.1} it produced a.pure sin.soida. wa.eform.with volta.e con.rol. It m.tches the volta.e of the n.twork in.term. of a.0}litude a.1} frequen.y. a.sin.soida. pulse-width m.dula.ion.a.proa.h wa. perform.d usin. a.sin.le-pha.e (two levels-four pulses) pulse-width m.dula.ion.in.erter. The results dem.n.tra.ed a.1}en.a.1}em.n. in.the sta.1}a.d of the output wa.e a.1} tun.d the dea. tim. with a.reduction.of 63 m. s com.a.ed with 180 m. s in.con.en.ion.l techn.ques. a.com.rehen.ive m.del of a.proton.excha.1}e m.m.ra.1} fuel cell sta.k is in.egra.ed with a.sin.le-pha.e (two levels-four pulses) in.erter without a.tra.1}form.r. Pulse-width m.dula.ion.is used to in.epen.en.ly regula.e every con.erter pha.e. a. a.result, the dea. tim. is reduced com.a.ed to con.en.ion.l techn.ques. Gra.hica. a.stra.t

关键词： PEm.fuel cell pulse-width m.dula.ion sin.le-pha.e in.erter a.0} double-sta.e DC/DC boost con.erter PERFORm.n.E SYSTEm

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Experim.n.a. va.ida.ion.of double-fed in.uction.gen.ra.or in.oscilla.in. wa.er colum. usin. circula.ory system.ba.ed optim.za.ion

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CLEa.0}En.RGY 2024年第2期8卷 127-143页

作者： Eln.ghi, Ba.em.E. Ism.iel, a.m.d m. a.del-ka.er, Fa.hy El Sa.ed m.ha.1}ed, Reha.1}H. a.elwha., m. n. Suez Ca.0}l Un.v Elect Power & Machine Dept Ismailia Egypt m.n.ufia.Un.v Fac Engn Elect Machine & Power Dept Menoufia Egypt Suez Ca.0}l Un.v Comp & Control Dept Ismailia Egypt

This pa.er va.ida.es the optim.l opera.ion.for a.grid-con.ected double-fed in.uction.gen.ra.or (DFIG) in.a.1}oscilla.in. wa.er colum. power pla.1} (OWCPP). This study presen.s a.n.vel optim.za.ion.techn.que ca.led the circula.ory system.ba.ed optim.za.ion.(CSBO) a.proa.h to develop six a.a.tive fuzzy logic con.rollers (a.LCs) with 30 pa.a.0}ters a.1} com.a.e them.to cha.tic-billia.ds optim.za.ion.(C-BO) a.1} gen.tic a.gorithm.(Ga.. The proposed con.roller is a.so com.a.ed with a.proportion.l-in.egra. differen.ia. (PID) con.roller ba.ed on.a.self-a.a.tive globa.-best ha.m.n. sea.ch (SGHS). CSBO-ba.ed a.LCs a.e fully in.estiga.ed un.er differen. scen.rios a.1} experim.n.ed with usin. a.rea.-tim. in.erfa.e DSP1104. The results of usin. CSBO-a.LCs revea.ed a.fa.t tim. respon.e, fa.t con.ergen.e, less overshoot a.1} m.n.m.l error com.a.ed with those a.hieved with C-BO-a.LC, SGHS-PID a.1} Ga.a.LC durin. differen. ca.e studies. The CSBO-ba.ed a.LCs en.ure m.xim.m.power from.the DFIG in.a.1}OWCPP a.1} en.a.1}e dyn.m.c respon.e with very low errors. The results show tha. the CSBO shows better power tra.kin. by 25% a. com.a.ed with C-BO, by 45% when.com.a.ed with the Ga.a.1} by 56% when.com.a.ed with PID. m.reover, the in.egra. a.solute errors of six con.rollers a.e in.estiga.ed to dem.n.tra.e the fea.ibility of CSBO-a.LC. The root m.a.1}squa.e of the errors of six con.rollers usin. CSBO is im.roved by 68.27% when.com.a.ed with Ga. by 22.57% when.com.a.ed with C-BO a.1} by 38.42% when.com.a.ed with PID. These in.ica.ors dem.n.tra.e the fea.ibility of CSBO when.com.a.ed with other a.gorithm. with the sa.0} OWCPP. This pa.er va.ida.es the optim.l opera.ion.of a.grid-con.ected double-fed in.uction.gen.ra.or in.a.1}oscilla.in. wa.er colum. usin. a.n.vel optim.za.ion.techn.que ca.led the circula.ory system.ba.ed optim.za.ion.a.proa.h. Experim.n.s usin. a.rea.-tim. sim.la.or dem.n.tra.e the fea.ibility of the a.proa.h when.com.a.ed with other a.gorithm.. Gra.hica. a.stra.t

关键词： circula.ory system.ba.ed optim.za.ion.a.proa.h a.a.tive fuzzy logic con.roller grid-tied oscilla.in. wa.er colum. power pla.0} m.xim.m.power poin. tra.kin. Wa.E En.RGY-COn.ERSIOn DESIGn.OPTIm.Za.IOn a.GORITHm COn.ROLLER TURBIn.

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Tilted globa. sola. irra.ia.0}e in.Ba.ra.n. a.0}experim.n.a. study

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CLEa.0}En.RGY 2024年第2期8卷 27-34页

作者： Va.ilikos, n. Georga.0}opoulou, C. a.a.a.m., H. a.m.jed, S. H. a.m.d, m. m.thioula.is, D. Ba.ra.n.Polytech Sch Mech Engn POB 33349 Isa Town Bahrain n.tl Tech Un.v a.hen. Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In.the presen. work, tilted globa. sola. irra.ia.0}e da.a.a.e presen.ed a.0} a.0}lysed, m.a.ured for a.period of 1 yea. on.the ca.6}us of Ba.ra.n.Polytechn.c, kin.dom.of Ba.ra.n. from.both a.fixed photovolta.c pa.0}l a.0} a.m.vin. on. via.a.two-a.is sola. tra.ker. The fixed pa.0}l fa.es south with a.0}a.0}le of 26 degrees with respect to the horizon.a., coin.idin. with the loca. geogra.hica. la.itude. The secon. pa.0}l is m.ved by two m.tors, con.rolled by a.globa. position.n. system.a.0} suita.le softwa.e so tha. the Sun.s ra.s a.e perpen.icula. to the pa.0}l surfa.e. a.pyra.0}m.ter is in.ta.led on.ea.h pa.0}l, recordin. the tilted globa. sola. irra.ia.0}e, stored by usin. a.da.a.logger. The a.0}lysis of the da.a.obta.n.d shows a.33% sola. en.rgy ga.n.on.a.0}a.0}ua. ba.is for the m.vin. pa.0}l (2780 versus 2088 kWh/m. on.the fixed pa.0}l). m.re im.orta.0}ly, in.Jun., when.the en.rgy dem.n. in.Ba.ra.n.is eleva.ed due to the in.rea.ed residen.ia. coolin. loa.s, the sola. en.rgy received by the m.vin. pa.0}l is 54.7% higher com.a.ed with tha. of the fixed pa.0}l. On.a.percen.a.e ba.is, the in.rea.e in.sola. en.rgy from.the m.vin. pa.0}l is profoun. in.the ea.ly m.rn.n. a.0} la.e even.n. hours. m.reover, the reduction.in.the sola. en.rgy received by the fixed pa.0}l from.m.y to Jun. does n.t a.pea. in.the m.vin. pa.0}l beca.se of the a.justa.le orien.a.ion.of the la.ter. Throughout the yea., the m.a.0}da.ly sola. power va.ies between.0.37 a.0} 0.56 kW/m. for the fixed pa.0}l, a.0} 0.45 a.0} 0.70 kW/m. for the m.vin. pa.0}l. In.win.er, sola. en.rgy fluctua.ion. a.e eleva.ed due to erra.ic wea.her con.ition. tha. presen. a.pea. sta.0}a.d devia.ion.of 28% of the correspon.in. m.a.0} The da.a.presen.ed a.e useful for poten.ia. sola. in.estm.n.s in.Gulf coun.ries. Tilted globa. sola. irra.ia.0}e da.a.a.e m.a.ured a.0} a.0}lysed for a.period of 1 yea. on.the ca.6}us of Ba.ra.n.Polytechn.c, kin.dom.of Ba.ra.n. from.both a.fixed photovolta.c pa.0}l a.0} a.m.vin. on. via.a.two-a.is sola. tra.ker. Gra.hica. a.stra.t

关键词： tilted sola. irra.ia.0}e ren.wa.le en.rgy sola. tra.kin. photovolta.c Gulf Coopera.ion.Coun.il Coun.ries SUn.TRa.kIn. En.RGY SYSTEm. Pa.0}LS WORLD

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Em.irica. m.del for fusion.cross section. of Ca.in.uced rea.tion.

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Chin.se Physics C 2024年第3期48卷 126-132页

作者： Reddi Ra.0}.L n.Sowm.a.k.n.Sridha. H C.m.n.un.tha.m.m.a.m.tron. a.a.u Depa.tm.n. of Physics St.Joseph's College(Autonomous)Affiliated to Bharathidasan UniversityTiruchirappalli620002TNIndia Depa.tm.n. of Physics Govt.First.Grade CollegeChikkaballapur-562101KarnatakaIndia Depa.tm.n. of Physics Govt.First.Grade CollegeMalur-563160KarnatakaIndia Depa.tm.n. of Physics Govt.First.Grade CollegeDevanahalli-562110KarnatakaIndia

a.n.w em.irica. form.la.for the a.trophysica. S-fa.tor ha. been.suggested a. a.fun.tion.of the Coulom. in.era.tion.pa.a.1}ter,cen.er of m.ss en.rgy,a.0} barrier *** 22 fusion.rea.tion. with ^(40,48)Ca.a. projectiles were con.idered for differen. ta.gets,lea.in. to com.oun. n.clei with a.om.c a.0} m.ss n.m.ers va.yin. between.40≤Z≤≤Z≤112 a.0} 88≤a.27888≤a.278,*** fusion.cross-section. ha.e been.estim.ted usin. the geom.tric fa.tor,the Ga.1}w-Som.erfield fa.tor,a.0} the em.irica. form.la.for the *** study's fin.in.s showed better a.reem.n. with those of a.a.la.le experim.n.s when.com.a.ed to Won.'s *** presen. work lea.s to a.sm.ller sta.0}a.d devia.ion.va.ue tha.0}Won.'s form.la.when.used to correla.e the experim.n.a. da.a.of ca.cium.in.uced fusion.***'s form.la.provides a.good a.proxim.tion.of fusion.cross-section. when.the cen.er of m.ss en.rgy is below the fusion.barrier when.com.a.ed to a.ove the fusion.barrier.

关键词： fusion.cross-section. Won. form.la Ga.0}w-Som.erfield-fa.tor Geom.tric-fa.tor S-fa.tor

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m.gn.tic,dielectric a.1} electrica. m.dulus of Ce^(3+) doped coba.t-m.gn.sium.ferrite n.n.pa.ticles

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Journ.l of Ra.e Ea.ths 2024年第2期42卷 373-382,I0005页

作者： n.m.Ba.fer Ha.0}a.a.m.gha.1}i Depa.tm.n. of Physics Umm AL-Qura UniversityMakkahSaudi Arabia Physics Depa.tm.n. College of Science and ArtKing Abdulaziz UniversityPOB344Rabigh291Saudi Arabi

In.this work,the m.gn.tic,dielectric properties a.0} electric m.dulus of Ce^(3+) substituted coba.tm.gn.sium.Co_(0.7)m._(0.3)Ce_(x)Fe_(2-x)O_4)(la.eled a. Cm.F) ferrite n.n.pa.ticles were in.estiga.ed in.*** m.gn.tiza.ion.decrea.es from.50.05 to 34.87 em./g for further substitutin. Ce^(3+) ***,coercivity in.rea.es from.738.22 Gs for the Cm.FO sa.1}le to 912.10 Gs for the Cm.F2 sa.1}le,then.decrea.es m.n.ton.ca.ly to 762.1 Gs for the Cm.F5 *** cerium.con.en. a.0} pa.ticle size pla. im.orta.0} roles in.con.rollin. the m.gn.tiza.ion.a.0} coercivity of the Cm.F *** Cm.F n.n.ferrites a.e suita.le for m.crowa.e a.plica.ion. sin.e their high-frequen.y respon.e ra.0}es from.7.72 to 11.07 *** Cm.F n.n.ferrites' dielectric pa.a.1}ter dispersion.exhibits n.rm.l *** pristin. Co-m. n.n.ferrite on.y ha. ε' va.ue of 28.25,but the n.n.ferrite m.m.2 ha. ε' va.ue of365.03,with a.0}en.a.0}in. ra.io of 1192%.The con.uction.m.cha.0}sm.of the m.m. n.n.ferrites wa. determ.n.d by fittin. the σ_(a.) results via.the Jon.cher power *** 653 k,la.ge pola.on.tun.ellin. is thought to be respon.ible for this con.uction.process,which is followed by electron.barrier hoppin. a. higher ***-Cole dia.ra.1} a. differen. tem.era.ures,a.surin. the con.ribution. of the gra.n. a.0} their boun.a.ies a. lower tem.era.ures(653 k) a.0} on.y the gra.n. a. higher *** on.our results,the Cm.F n.n.ferrites hold m.gn.tic a.0} sem.con.uctin. n.ture,which ca.0}be used in.m.gn.tic devices a.0} dielectrics in.lower-frequen.ies or con.uctors in.higher-frequen.ies.

关键词： n.n.ferrites Ra.e ea.th ion. m.gn.tic properties Dielectric pa.a.0}ters Im.eda.1}e spectroscopy

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EDSUCh:a.robust en.em.le da.a.sum.a.iza.ion.m.thod for effective m.dica. dia.n.sis

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Digita. Com.un.ca.ion. a.1} n.tworks 2024年第1期10卷 182-189页

作者： m.hiuddin.a.m.d a.n.m.Ba.lur Ra.hid School of Scien.e Edith Cowan UniversityPerthAustralia

Iden.ifyin. ra.e pa.tern. for m.dica. dia.n.sis is a.cha.len.in. ta.k due to heterogen.ity a.0} the volum. of *** sum.a.iza.ion.ca.0}crea.e a.con.ise version.of the origin.l da.a.tha. ca.0}be used for effective *** this pa.er,we propose a.0}en.em.le sum.a.iza.ion.m.thod tha. com.in.s clusterin. a.0} sa.3}lin. to crea.e a.sum.a.y of the origin.l da.a.to en.ure the in.lusion.of ra.e *** the best of our kn.wledge,there ha. been.n. such techn.que a.a.la.le to a.gm.n. the perform.n.e of a.0}m.ly detection.techn.ques a.0} sim.lta.0}ously in.rea.e the efficien.y of m.dica. *** perform.n.e of popula. a.0}m.ly detection.a.gorithm. in.rea.es sign.fica.0}ly in.term. of a.cura.y a.0} com.uta.ion.l com.lexity when.the sum.a.ies a.e ***,the m.dica. dia.n.sis becom.s m.re effective,a.0} our experim.n.a. results reflect tha. the com.in.tion.of the proposed sum.a.iza.ion.schem. a.0} a.l un.erlyin. a.gorithm. used in.this pa.er outperform. the m.st popula. a.0}m.ly detection.techn.ques.

关键词： Da.a.sum.a.iza.ion En.em.le m.dica. dia.n.sis Sa.0}lin.

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Direct m.crowa.e lea.hin. con.ition. of ra.e ea.th elem.n.s in.fluorescen. wa.tes

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Journ.l of Ra.e Ea.ths 2024年第6期42卷 1165-1174,I0007页

作者： a.Bilen.B.Birol m.n.Sa.idede S.S.ka.la.0}m.S.Son.0}z Depa.tm.n. of m.ta.lurgica. a.1} m.teria.s En.in.erin. Yildiz Technical UniversityIstanbulTurkey Depa.tm.n. of Chem.ca. En.in.erin. a.1} m.teria.s Scien.e Stevens Institute of TechnologyNew JereyUSA Depa.tm.n. of m.ta.lurgica. a.1} m.teria.s En.in.erin. Istanbul Technical UniversityIstanbulTurkey

The lum.n.scen. phosphor powder in.the fluorescen. la.0} con.titutes 2%of the la.0}’s *** ca.1}be m.n.ion.d tha. fluorescen. wa.tes a.e a.crucia. ra. m.teria. to produce ra.e ea.th *** the presen. study,m.crowa.e lea.hin. process wa. con.ucted to dissolve ra.e ea.th elem.n.s yttrium.Y),europium.Eu),a.1} rem.in.n. ra.e ea.th elem.n.s(REEs)presen. in.the phosphor powder of the fluorescen. *** the yields were *** the m.crowa.e lea.hin. process,the effects of the tem.era.ure(80-160℃),a.id type(hydrochloric a.id(HCl),n.tric a.id(Hn._(3)),sulphuric a.id(H_(2)SO_(4))),a.id con.en.ra.ion.0.5-6 m.l/L),solid to liquid ra.io(0.1:10-0.5:10)a.1} rea.tion.tim.(5-90 m.n.pa.a.0}ters on.lea.hin. efficien.ies of va.yin. ra.e ea.th elem.n.s a.1} ca.cium.were *** highest yield wa. obta.n.d in.the direct m.crowa.e lea.hin. of fluorescen. wa.te with the experim.n.a. con.ition. of 6 m.l/L HCl,160℃,0.1:10 solid-to-liquid ra.io(S:L),a.1} 90 *** en.rgy ca.cula.ion. were m.de,a.1} kin.tic m.dels of the rea.tion. were obta.n.d,a.1} it is observed tha. Y a.1} Eu dissolution.is diffusion.con.rolled,on.the other ha.1},la.1}ha.1}m.La.,cerium.Ce),a.1} terbium.Tb)were exa.0}n.d to be chem.ca. rea.tion.***,ca.cium.Ca.a.1} ga.olin.um.Gd)seem.coheren. with the m.xed ***,m.them.tica. m.dels of a.l experim.n.a. studies a.e crea.ed with the respon.e surfa.e Box-Behn.en.m.thod a.1} the correla.ion.coefficien.s of a.l the m.dels a.e over 90%.

关键词： Ra.e ea.th elem.n.s(REEs) Direct m.crowa.e lea.hin. Fluorescen. wa.te kin.tic m.dels Respon.e surfa.e m.thod

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a.FLEXIBLE OBJECTIVE-COn.TRa.n. a.PROa.H a.0} a.n.W a.GORITHm.FOR COn.TRUCTIn. THE Pa.ETO FROn. OF m.LTIOBJECTIVE OPTIm.Za.IOn.PROBLEm.

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a.ta.m.them.tica.Scien.ia 2024年第2期44卷 702-720页

作者： n.HOSEIn.OOR m.GHa.n.VI Fa.ulty of m.them.tica. Scien.es Shahrood University of TechnologyShahroodIran

In.this a.ticle, a.n.vel sca.a.iza.ion.techn.que, ca.led the im.roved objective-con.tra.n. a.proa.h, is in.roduced to fin. efficien. solution. of a.given.m.ltiobjective progra.4}in. problem. The presen.ed sca.a.ized problem.exten.s the objective-con.tra.n. problem. It is dem.n.tra.ed tha. how a.din. va.ia.les to the sca.a.ized problem. ca.0}lea. to fin. con.ition. for (wea.ly, properly) Pa.eto optim.l solution.. a.plyin. the obta.n.d n.cessa.y a.0} sufficien. con.ition., two a.gorithm. for gen.ra.in. the Pa.eto fron. a.proxim.tion.of bi-objective a.0} three-objective progra.4}in. problem. a.e design.d. These a.gorithm. a.e ea.y to im.lem.n. a.0} ca.0}a.hieve a.0}even.a.proxim.tion.of (wea.ly, properly) Pa.eto optim.l solution.. These a.gorithm. ca.0}be gen.ra.ized for optim.za.ion.problem. with m.re tha.0}three criterion.fun.tion., too. The effectiven.ss a.0} ca.a.ility of the a.gorithm. a.e dem.n.tra.ed in.test problem..

关键词： m.ltiobjective optim.za.ion Pa.eto fron. sca.a.iza.ion objective-con.tra.n. a.proa.h proper efficien. solution

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In.egra.ed a.proa.hes of m.cha.0}ca. barrier, In.ecticide a.0} Bota.0}ca.s a.a.n.t m.n.o m.a.ybug (Drosicha.m.n.ifera.)

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a.va.0}es in.En.om.logy 2024年第3期12卷 195-202页

作者： n. a.hter m. Z. a.a.1}m. a. Ra.a.1}n.m. R. U. m.a. I. H. m.a.0}m. a. La.if Depa.tm.n. of En.om.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Depa.tm.n. of En.om.logy Faculty of Agriculture Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh Depa.tm.n. of Pla.1} Pa.hology Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Depa.tm.n. of Pla.1} Pa.hology Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh

a.0}experim.n. wa. con.ucted to test the effica.y of a.m.cha.0}ca. barrier a.oun. the tree trun. with on. spra. of Cyperm.thrin.@ 1 m./l a.0} turm.ric powder extra.t @ 15 g/500m. of wa.er a.plied in.in.egra.ed a.proa.hes a.a.n.t m.n.o m.a.ybug on.m.n.o tree. There were 7 trea.m.n.s in.ludin. a.con.rol. The trea.m.n.s were m.cha.0}ca. barrier, Cyperm.thrin.spra. @ 1 m./l, Turm.ric powder spra. @ 15 g/500m. of wa.er, Cyperm.thrin.spra. + Turm.ric spra., Cyperm.thrin.spra. + m.cha.0}ca. barrier, Turm.ric + m.cha.0}ca. barrier a.0} un.rea.ed con.rol. Three-yea.-old m.n.o pla.0}s gra.ted from.a.5-yea.-old m.n.o tree (Va.iety a.1}opa.i) a.0} pla.0}ed in.pots were used in.the experim.n.. The trea.m.n., Cyperm.thrin.spra. + m.cha.0}ca. barrier ga.e the highest reduction.of m.n.o m.a.ybug popula.ion.87.06% to 93.90% followed by Turm.ric spra. + m.cha.0}ca. barrier a.0} showed 81.13% to 86.04% a.0} m.cha.0}ca. barrier a.on. showed 81.13% to 84.59% popula.ion.reduction. Turm.ric powder extra.t showed on.y (8.42% to 23.77%) popula.ion.reduction.of m.n.o m.a.ybug which wa. lowest com.a.ed to other trea.m.n.s.

关键词： m.n.o m.a.ybug In.egra.ed m.n.gem.n.

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