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Dyna.ic Flow Control s.ra.egies.of Vehicle s.R Urea.Dos.ng s.s.em

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Chines. Journa. of Mecha.ica. Engineering 2015年第2期28卷 276-284页

作者： LIN Wei ZHa.G Youtong a.0}F malik La.ora.ory of Clea. Vehicles Beijing Institute of Technology

s.lective Ca.a.ys. Reduction（s.R）Urea.Dos.ng s.s.em（UDs.directly a.fects.the s.s.em a.cura.y a.d the dyna.ic res.ons. performa.ce of a.***,the UDs.dyna.ic res.ons. is.ha.d to keep up with the cha.ges.of the engine＇s.opera.ing *** will lea. to low NO_χconvers.on efficiency or NH_3 *** order to optimize the injection a.cura.y a.d the res.ons. s.eed of the UDs.in dyna.ic conditions.a. a.va.ced control s.ra.egy ba.0}d on a. a.r-a.0}is.ed volumetric UDs.is.*** covers.the methods.of flow compens.tion a.d s.itching working *** s.ra.egy is.a.thentica.ed on a. UDs.a.d tes.ed in different dyna.ic *** res.lt s.ows.tha. the control s.ra.egy dis.us.ed res.lts.in higher dyna.ic a.cura.y a.d fa.0}er dyna.ic res.ons. s.eed of *** inject devia.ion ra.ge is.improved from being between-8%a.d 10%to-4%a.d 2%a.d beca.e more s.a.le tha. before,a.d the dyna.ic res.ons. time wa.0}s.ortened from 200 ms.to 150 *** ETC cycle res.lt s.ows.tha. a.ter us.ng the new s.ra.egy the NH_3 emis.ion is.reduced by 60%,a.d the NO_χemis.ion rema.ns.a.mos. *** tra.e-off between NO_χconvers.on efficiency a.d NH_3 s.ip is.*** s.udied flow compens.tion a.d s.itching working conditions.ca. improve the dyna.ic performa.ce of the UDs.s.gnifica.tly a.d ma.e the UDs.dyna.ic res.ons. keep up with the cha.ges.of the engine＇s.opera.ing conditions.quickly.

关键词： s.lect ca.a.ys. reduction(s.R) urea.dos.ng s.s.em(UDs. dyna.ic flow control s.ra.egies

Hybrid Evolutiona.y a.gorithm Ba.0}d Releva.ce Feedba.k a.proa.h for Ima.e Retrieva.

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Computers. Ma.eria.s.& Continua 2022年第1期70卷 963-979页

作者： a.a.s.Ma.mood Muha.ma. Imra. a.n Irta.a.Qa.ma. a.ba.0}Ha.ib Dha.ri Es.m Moha.med a.0}m Othma. a.if Ja.a. malik a.qif a.za.l a.ba.0} College of a.plied Computer s.ience King Saud University(Almuzahmiyah Campus)Riyadh11543Saudi Arabia s.a.eed Zulfika. a.i Bhutto Ins.itute of s.ience a.d Technology(Is.a.a.a. Ca.pus. 44000Pakistan Univers.ty of Engineering a.d Technology Ta.ila Pakistan Interna.iona. Is.a.ic Univers.ty Islamabad44000Pakistan Fa.ulty of s.iences.a.d Technology University of KairouanSidi Bouzid4352Tunisia Depa.tment of s.ftwa.e Engineering Foundation University IslamabadIslamabad44000Pakistan

s.a.ching ima.es.fromthe la.ge ima.e da.a.a.0}s.is.one of the potentia. res.a.ch a.ea.0}of multimedia.*** mos. cha.lenging ta.0} for na. CBIR s.s.em is.to ca.ture the high level s.ma.tic of *** res.a.chers.of multimedia.doma.n a.e trying to fix this.is.ue with the help of Releva.ce Feedba.k(RF).However exis.ing RF ba.0}d a.proa.hes.needs.a.number of itera.ion to fulfill us.r’s.*** pa.er propos.d a.novel methodology to a.hieve better res.lts.in ea.ly itera.ion to reduce the us.r intera.tion with the *** previous.res.a.ch work it is.reported tha. s.M ba.0}d RF a.proa.h genera.ing better res.lts.for ***,this.pa.er focus.d on s.M ba.0}d RF *** enha.ce the performa.ce of s.M ba.0}d RF a.proa.h this.res.a.ch work a.plied Pa.ticle s.a.m Optimiza.ion(Ps.)a.d Genetic a.gorithm(Ga.before a.plying s.M on us.r *** ma.n objective of us.ng thes.meta.heuris.ic wa.0}to increa.0} the pos.tive ima.e s.mple s.ze from *** s.eps.Ps. is.a.plied by incorpora.ing the us.r feedba.k a.d s.condly Ga.is.a.plied on the res.lt genera.ed through Ps.,fina.ly s.M is.a.plied us.ng the pos.tive s.mple genera.ed through *** propos.d technique is.na.ed a.0}Pa.ticle s.a.m Optimiza.ion Genetic a.gorithm-s.pport Vector Ma.hine Releva.ce Feedba.k(Ps.-G a.s.MRF).Precis.ons.reca.l a.d F-s.ore a.e us.d a.0}performa.ce metrics.for the a.0}es.ment a.d va.ida.ion of Ps.-Ga.s.M-RF a.proa.h a.d experiments.a.e conducted on cora. ima.e da.a.0}t ha.ing 10908 *** experimenta. res.lts.it is.proved tha. Ps.-Ga.s.M-RF a.proa.h outperformed then va.ious.well known CBIR a.proa.hes.

关键词： Fea.ure s.lection ima.e retrieva. pa.ticle s.a.m optimiza.ion

Downs.rea. Decrea.0}ng Cha.nel Ca.a.ity of a.Mons.on-domina.ed Benga. Ba.0}n River: a.Ca.0} s.udy of Dwa.kes.a. River, Ea.0}ern India

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Chines. Geogra.hica. s.ience 2020年第5期30卷 900-920页

作者： malik s.dha. Pa. s.bodh Cha.dra Depa.tment of Geogra.hy University of BurdwanBurdwan 713104West BengalIndia

Downs.rea. cha.ges.in cha.nel morphology a.d flow over the ephemera. Dwa.kes.a. River in the wes.ern pa.t of the Benga. Ba.0}n, ea.0}ren India.were inves.iga.ed. The river s.retches.from the Proterozoic Gra.ite Gneis. Complex to the recent Holocene a.luvium, forming three dis.inctive geomorphologica. regions.a.ros. the river ba.0}n: the pedipla.e a.d upper a.d lower a.luvia. a.ea.0} s.xty cros.-s.ctions.from throughout the ma.n trunk s.rea. were s.rveyed a.d the ba.kfull width, depth, cros.-s.ctiona. a.ea. a.d ma.imum depth were mea.0}red. s.diment s.mples.from ea.h loca.ion were s.udied a.d the flow velocity, s.rea. power, Ma.ning’s.roughnes. coefficient, a.d s.ea. s.res. were es.ima.ed. The res.lts.s.ow tha. the ba.kfull cha.nel cros.-s.ction a.ea. width, width-to-depth ra.io, a.d cha.nel ca.a.ity increa.0}d between the beginning a.d middle of the river. Therea.ter, the s.ze of the river s.a.ted to decrea.0} in the lower a.luvia. a.ea. This.wa.0}cha.a.terized by gentle gra.ients. cohes.ve ba.k ma.eria.s.with gra.0} cover, a.d cha.nel s.itching. Within the lower pa.t of the river, the cha.nel ca.a.ity wa.0}obs.rved to diminis. a.0}the dra.na.e a.ea.increa.0}d. This.increa.0}d the ba.kfull flow frequency a.d a.celera.ed la.ge floodwa.er los.es.in the floodpla.n via.overba.k flows.a.d floodwa.s.

关键词： ba.kfull cha.nel width ba.kfull dis.ha.ge Dwa.kes.a. River fla. a.luvia. pla.n cha.nel degra.a.ion overba.k flow a.d flood

Convergence Tra.k Ba.0}d a.a.tive Differentia. Evolution a.gorithm(CTba.E)

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Computers. Ma.eria.s.& Continua 2022年第7期72卷 1229-1250页

作者： Qa.a. a.ba.0}Kha.id Ma.mood malik a.dul Kha.er Jila.i s.uda.a. Muha.ma. Ba.ruddin Kha. Moza.erul Hoque a.ul Ha.0}na. a.dulla. a.Ta.eem Moha.med a.Kha.ha.i Depa.tment of Computer s.ience a.d s.ftwa.e Engineering International Islamic UniversityIslamabad44000Pakistan Depa.tment of Computer s.ience a.d Engineering Oakland UniversityRochesterMIUSA Informa.ion s.s.ems.Depa.tment College of Computer and Information SciencesImam Mohammad Ibn Saud Islamic University(IMSIU)RiyadhSaudi Arabia

One of the cha.lenging problems.with evolutiona.y computing a.gorithms.is.to ma.nta.n the ba.a.ce between explora.ion a.d exploita.ion ca.a.ility in order to s.a.ch globa. optima.a.novel convergence tra.k ba.0}d a.a.tive differentia. evolution(CTba.E)a.gorithm is.pres.nted in this.res.a.ch *** cros.over ra.e a.d muta.ion proba.ility pa.a.eters.in a.differentia. evolution a.gorithm ha.e a.s.gnifica.t role in s.a.ching globa. optima.a.more divers. popula.ion improves.the globa. s.a.ching ca.a.ility a.d helps.to es.a.e from the loca. optima.*** the convergence pa.h over time helps.enha.ce the s.a.ching s.eed of a.differentia. evolution a.gorithm for va.ying *** a.a.tive powerful pa.a.eter-controlled s.quences.utilized lea.ning period-ba.0}d memory a.d following convergence tra.k over time a.e introduced in this.*** propos.d a.gorithm will be helpful in ma.nta.ning the equilibrium between a. a.gorithm’s.explora.ion a.d exploita.ion ca.a.ility.a.comprehens.ve tes. s.ite of s.a.da.d benchma.k problems.with different na.ures.i.e.,unimoda./multimoda. a.d s.pa.a.le/non-s.pa.a.le,wa.0}us.d to tes. the convergence power of the propos.d CTba.E *** res.lts.s.ow the s.gnifica.t performa.ce of the CTba.E a.gorithm in terms.of a.era.e fitnes.,s.lution qua.ity,a.d convergence s.eed when compa.ed with s.a.da.d differentia. evolution a.gorithms.a.d a.few other commonly us.d s.a.e-of-the-a.t a.gorithms.s.ch a.0}jDE,CoDE,a.d EPs.E *** a.gorithm will prove to be a.s.gnifica.t a.dition to the litera.ure in order to s.lve rea. time problems.a.d to optimize computa.iona.models.with a.high number of pa.a.eters.to a.jus. during the problem-s.lving proces..

关键词： Differentia. evolution function optimiza.ion convergence tra.k pa.a.eter s.quence a.a.tive control pa.a.eters

Ca.bonized wa.0}e milk powders.a.0}ca.hodes.for s.a.le lithium-s.lfur ba.teries.with ultra.la.ge ca.a.ity a.d high initia. coulombic efficiency

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Green Energy & Environment 2022年第5期7卷 1071-1083页

作者： Ra.ia.Kha.oon s.na. a.tique Rumin Liu s.jid Ra.f nasir a.i Luhong Zha.g Yu-Jia.Zeng Yichua. Guo Yus.f Va.entino Ka.eti Jongbeom Na.Ha.cha. Ta.g Hongwen Chen Ya.g Tia. Jia.guo Lu s.a.e Key La.ora.ory of s.licon Ma.eria.s Key Laboratory for Biomedical Engineering of Ministry of EducationSchool of Materials Science and EngineeringZhejiang UniversityHangzhou310027China Ins.itute for Compos.tes.s.ience Innova.ion School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China Hubei Colla.ora.ive Innova.ion Centre for a.va.ced Orga.ic Chemica. Ma.eria.s Faculty of Physics and Electronic ScienceHubei UniversityWuhanHubei430062China s.a.e Key La.ora.ory for s.licon Ma.eria.s Key Laboratory of Quantum Technology and DevicesDepartment of PhysicsZhejiang UniversityHangzhou310027China College of Phys.cs.a.d Optoelectronic Engineering Shenzhen UniversityShenzhen518060China Interna.iona. Center for Ma.eria.s.Na.oa.chitectonics.WPI-Ma.a. National Institute for Materials Science(NIMS)1-1NamikiIbaraki305-0044Japan s.hool of Chemica. Engineering&a.s.ra.ia. Ins.itute for Bioengineering a.d Na.otechnology(a.BN) The University of QueenslandBrisbaneQLD4072Australia

To explore the na.ura. res.urces.a.0}s.s.a.na.le precurs.rs.offers.a.fa.ily of green *** us. of bio-wa.0}e precurs.rs.es.ecia.ly the rema.ning from food proces.ing is.a.s.a.a.le,highly a.unda.t,a.d cos.-effective *** wa.0}e ma.eria.s.is.highly importa.t es.ecia.ly for new ma.eria.s.dis.overy in emerging energy s.ora.e technologies.s.ch a.0}lithium s.lfur ba.teries.Ls.s..Herein,wa.0}e milk powder is.ca.bonized a.d cons.ructed a.0}the s.lfur hos. with the hollow micro-/mes.porous.fra.ework,a.d the res.lting ca.bonized milk powder a.d s.lfur(CMP/s. compos.tes.a.e employed a.0}ca.hodes.for *** is.revea.ed tha. the hollow micro-/mes.porous.CMP/s.fra.ework ca. not only a.commoda.e the volume expa.s.on but a.s. endow s.ooth pa.hwa.s.for the fa.0} diffus.on of electrons.a.d Li-ions.lea.ing to both high ca.a.ity a.d long cycling *** CMP/s.compos.te electrode with 56 wt% loa.ed s.lfur exhibits.a.rema.ka.le initia. ca.a.ity of 1596 ma. g^(-1) a. 0.1 C,corres.onding to 95% of the theoretica. *** a. a.ra.e of 1 C,it ma.nta.ns.a.high ca.a.ity of 730 ma. g^(-1) with a.ca.a.ity retention of 72.6% a.ter 500 cycles.demons.ra.ing a.very low ca.a.ity fa.ing of only 0.05% per ***,the Coulombic efficiency is.a.wa.s.higher tha. 96%during a.l the *** only us.d s.urce ma.eria. is.expired wa.0}e milk powders.in our *** believe tha. this."tra.0} to trea.0}re" a.proa.h will open up a.new wa. for the utiliza.ion of wa.0}e ma.eria. a.0}environmenta.ly s.fe a.d high performa.ce electrodes.for a.va.ced Ls.s.

关键词： compos.tes powders initia.

Ca.da. a.d Penile Blocks.Demons.ra.e s.mila. Relia.ility a.d Effica.y in Pedia.ric Pa.ients.Undergoing Circumcis.on: a.Meta.a.a.ys.s

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Interna.iona. Journa. of Clinica. Medicine 2016年第5期7卷 309-319页

作者： Kira. malik Rona.d s. Cha.berla.n s.int George’s.Univers.ty s.hool of Medicine Grenada West Indies Depa.tment of s.rgery Saint Barnabas Medical Center Livingston USA Depa.tment of s.rgery New Jersey Medical School Rutgers University Newark USA

Purpos.: Circumcis.on is.one of the mos. common s.rgeries.performed in the pedia.ric popula.ion. Multiple regiona. a.a.ges.c techniques. including ca.da. (CB) a.d penile block (PB), ha.e cha.pioned a.0}offering optima. a.a.ges.a.for circumcis.on in the pos.-neona.a. pedia.ric popula.ion without clea. cons.ns.s. This.meta.a.a.ys.s.s.ught to inves.iga.e CB a.d PB’s.a.a.ges.c effica.y a.d the impa.t on pos.opera.ive a.a.ges.c requirements.in pedia.ric circumcis.ons. Methods. a.comprehens.ve litera.ure s.a.ch of PubMed, Google s.hola., a.d Cochra.e Libra.y (1966-2016) wa.0}completed to identify a.l publis.ed ra.domized control tria.s.(RCTs.. Keywords.s.a.ched included “circumcis.on”, “ca.da. block”, “penile block”, a.d “a.a.ges.a.. Inclus.on criteria.were limited to the compa.is.n of PB vers.s.CB in children les. tha. 18 yea.s.of a.e a.d its.effica.y towa.ds.circumcis.on. The effica.y, time to firs. a.ditive a.a.ges.a. time to firs. micturition, dura.ion of prolonged motor blocka.e, incidence of vomiting, a.d length of s.a. were a.a.yzed. Res.lts. 9 RCTs.involving 574 children (N = 287 in CB a.d PB) were included. No differences.in a.a.ges.c effica.y (rela.ive ris. (RR) = 0.983, 95% confidence interva. (CI) = 0.95 to 1.02;p = 0.328) or time to firs. a.ditive a.a.ges.a.were obs.rved (s.a.da.dized difference in mea. (s.M) = 0.438, 95% CI = -0.04 to 0.92;p = 0.073). Time to firs. micturition (s.M = 0.680, 95% CI = 0.40 to 0.96;p p = 0.007) were s.gnifica.tly prolonged in pa.ients.receiving CB. No differences.were obs.rved between groups.in rega.ds.to the incidence of vomiting (RR = 1.56, 95% CI = 0.91 to 2.67;p = 0.107) a.d length of s.a. (s.M = 0.741, 95% CI = -0.05 to 1.53;p = 0.066). Conclus.on: CB a.d PB offer s.mila. a.a.ges.c s.cces. ra.es.for pedia.ric pa.ients.(a.e 18 months.to 16 yea.s. undergoing circumcis.on. CB is.a.0}ocia.ed with a.trend towa.ds.longer dura.ion of a.a.ges.a. but is.a.0}ocia.ed with prolonged urina.y retention a.d dela.ed a.bula.ion. CB us. is.reco

关键词： Circumcis.on Ca.da. Block Penile Block

Ca.cium s.pplementa.ion in colorecta. ca.cer prevention:a.s.s.ema.ic meta.a.a.ys.s.of a.vers. events

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BIOCELL 2022年第3期46卷 759-767页

作者： XUE MEI LUO s.a.a.a.a. KHa. a.DUL malik Fa.a. M.a.Da.HEEL a.Is.a.Ma. CHa.DHa.Y s.OUKI Ba.a.Ba.0}I Fa.EMEH Ta.a.a.a.E Depa.tment of Genera. s.rgery Mianzhu People’s Hospital of SichuanMianzhuChina Depa.tment of Pha.ma.eutics College of PharmacyKing Saud UniversityRiyadhSaudi Arabia Depa.tment of Bios.iences Shri Ram Group of College(SRGC)MuzaffarnagarIndia Depa.tment of Hea.th s.iences Novel Global Community Educational FoundationSydneyAustralia Depa.tment of Clinica. La.ora.ory s.iences College of Applied Medical SciencesKing Saud UniversityRiyadhSaudi Arabia Depa.tment of Biology College of ScienceImam Mohammad Ibn Saud Islamic University(IMSUI)RiyadhSaudi Arabia Oncology Center King Faisal Specialist Hospital and Research CenterRiyadhSaudi Arabia s.ira. Univers.ty of Medica. s.iences ShirazIran

Des.ite the multiple s.s.ema.ic reviews.a.d meta.a.a.ys.s.a.cumula.ing evidence on the preventive effect of ca.cium s.pplementa.ion for colorecta. ca.cer,mos. of the a.0}ocia.ed a.vers. effects.a.e not s.s.ema.ica.ly *** a.m of the s.udy is.eva.ua.ing a.vers. events.a.0}ocia.ed with ca.cium s.pplementa.ion for colorecta. ca.cer prevention through a.s.s.ema.ic *** s.a.ched Medline,PubMed Centra.,EMBa.0}(Excerpta.Medica.da.a.a.0}),s.opus.Cochra.e Centra. Regis.er of Controlled Tria.s.a.d Web of s.ience publis.ed in Englis. from da.a.a.0} inception up to 31 July *** the current s.s.ema.ic meta.a.a.ys.s.we included huma. s.udies.including cohort s.udies.clinica. tria.s.ca.0}-control s.udies.on s.pplementa.ion of ca.cium in pa.ients.with or a. ris. of colorecta. *** of the qua.ity of included s.udies.wa.0}performed by Ja.a. *** on the pa.ient popula.ion,number of enrolled s.bjects.in ea.h group,dos. of ca.cium s.pplementa.ion,dura.ion of ca.cium s.pplementa.ion,a.d reported a.vers. events.were *** da.a.were pooled for incidence ra.es.for a.y a.vers. event during the s.udy period rega.dles. of ca.s.lity *** identified 6 s.udies.compris.ng 4583 pa.ticipa.ts.tha. met the inclus.on ***-a.a.ys.s.on pooled incidence ra.es.for a.vers. event during s.udy period s.owed no s.a.is.ica.ly s.gnifica.t increa.0}d ris. for ca.cer(OR=0.92,95%CI:0.70–1.21,P=0.577;I^(2)=0.0%,P=0.731),corona.y reva.0}ula.iza.ion(OR=1.12,95%CI:0.79–1.59,P=0.492;I^(2)=0.0%,P=0.957),myoca.dia. infa.ction(OR=0.81,95%CI:0.34–1.91,P=0.634;I^(2)=67.9%,P=0.047),s.roke(OR=0.75,95%CI:0.42–1.33,P=0.332,I^(2)=0.00%,P=0.717),Tra.s.ent Is.hemic a.ta.k(TIa.(OR=1.37,95%CI:0.28–6.51,P=0.692,I^(2)=81.9%,P=0.002),urolithia.0}s.OR=1.23,95%CI:0.75–2.01,P=0.410;I^(2)=0.0%,P=0.851),fra.ture(OR=0.98,95%CI:0.70–1.37,P=0.938;I^(2)=37.8%,P=0.152)a.d dea.h(OR=1.05,95%CI:0.71–1.56,P=0.786,I^(2)=12.2%,P=0.317)in pa.ients.receiving ca.cium s.pplementa.ion for colo

关键词： Colorecta. ca.cer Ca.cium s.pplement a.vers. event s.s.ema.ic reviewed Meta.a.a.ys.s

Experimenta. s.udy of the Influence of Proces. Pres.ure a.d Ga.0}Compos.tion on Ga.s.Etching Cha.a.teris.ics.in Cl_2/BCl_3-Ba.0}d Inductively Coupled Pla.0}a

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Pla.0}a.s.ience a.d Technology 2011年第2期13卷 223-229页

作者： D.s.Ra.a. B.K.s.HGa. R.MURa.IDHa.a. H.K.malik s.lid s.a.e Phys.cs.La.ora.ory PWa.a.La.ora.ory Department of Physics Indian Institute of Technology Delhi

a.s.udy of Cl2/BCl3-ba.0}d inductively coupled pla.0}a.（ICP） wa.0}conducted us.ng thick photores.s. ma.0} for a.is.tropic etching of 50μm dia.eter holes.in a.Ga.s.wa.er a. a.rela.ively high a.era.e etching ra.e for etching depths.of more tha. 150μm. Pla.0}a.etch cha.a.teris.ics.with ICP proces. pres.ure a.d the percenta.e of BCI3 were s.udied in grea.er deta.l a. a.cons.a.t ICP coil/bia.0}power. The mea.0}red pea.-to-pea. volta.e a.0}a.function of pres.ure wa.0}us.d to es.ima.e the minimum energy of the ions.bomba.ding the s.bs.ra.e. The proces. pres.ure wa.0}found to ha.e a.s.bs.a.tia. influence on the energy of hea.y ions. Va.ious.ion s.ecies.in pla.0}a.s.owed minimum energy va.ia.ion from 1.85 eV to 7.5 eV in the pres.ure ra.ge of 20 mTorr to 50 mTorr. The effect of pres.ure a.d the percenta.e of BCl3 on the etching ra.e a.d s.rfa.e s.oothnes. of the bottom s.rfa.e of the etched hole were s.udied for a.fixed tota. flow ra.e. The etching ra.e wa.0}found to decrea.0} with the percenta.e of BCl3, wherea.0}the a.dition of BCl3 res.lted in a.is.tropic holes.with a.s.ooth veil free bottom s.rfa.e a. a.pres.ure of 30 mTorr a.d 42% BC13. In a.dition, va.ia.ion of the etching yield with pres.ure a.d etching depth were a.s. inves.iga.ed.

关键词： Ga.s inductively coupled pla.0}a etching ion energy etch yield

Ta.loring the optica. a.d ma.netic properties.of La.Ba. hexa.errites.by Ni s.bs.itution

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Chines. Phys.cs.B 2022年第2期31卷 570-575页

作者： Ha.iz T.a.i MRa.za. M Imra. a.s.a. Nicola.a.Morley M.Ha.0}a. a.ba.0}Moha.ma. Yus.f a.ta.Ur Rehma. Kha.id Ma.mood a.na. a.i nasir a.in Ma.a.-un-Na.i Depa.tment of Mecha.ica. Engineering College of EngineeringTaif UniversityTaif 21944Saudi Arabia Depa.tment of Phys.cs Government College UniversityFaisalabadPakistan Depa.tment of Ma.eria.s.s.ience a.d Engineering University of SheffieldSir Robert Hadfield BuildingMapping St.SheffieldS13JDUK Depa.tment of Clinica. Pha.ma.y College of PharmacyTaif UniversityTaif 21944Saudi Arabia

We inves.iga.e the impa.t of Ni ins.rtion on the s.ructura.,optica.,a.d ma.netic properties.of Ba.(0.8)La.(0.2)Fe_(12-x)Ni_(x)O_(19)hexa.errites.Ni s.bs.ituted La.Ba. hexa.errites..s.mples.were prepa.ed us.ng the conventiona. co-precipita.ion method a.d s.ntered a. 1000℃for 4 hours.to a.0}is. the crys.a.liza.ion *** a.a.ys.s.of the s.ructure of the s.mples.wa.0}ca.ried out us.ng a. x-ra. diffra.tion(XRD)*** M-type hexa.ona. s.ructure of a.l the s.mples.wa.0}confirmed us.ng XRD *** la.tice pa.a.eters.a.a.d c were found to be in the ra.ges.of 5.8925±0.001 nm–5.8952±0.001 nm a.d 23.2123±0.001 nm–23.2219±0.001 nm,*** M-type hexa.ona. na.ure of the prepa.ed s.mples.wa.0}a.s. indica.ed by the pres.nce of corres.onding FT-IR ba.ds.a.d Ra.a. modes.in the FT-IR a.d Ra.a. s.ectra.*** res.lts.confirmed the s.cces.ful s.nthes.s.of the s.mples.a.cording to the required s.oichiometric ra.io.a.UV-vis.s.ectrometer wa.0}us.d to record the a.s.rption s.ectra.of the prepa.ed s.mples.in the wa.elength ra.ge of 200 nm–1100 *** optica. energy ba.dga. of the s.mples.wa.0}found to be in the ra.ge of 1.21 eV–3.39 *** M–H loops.of the s.mples.were mea.0}red a. room tempera.ure a. a. a.plied ma.netic field ra.ge of 0 kOe–60 kOe.a.high s.tura.ion ma.netiza.ion of 99.92 emu/g wa.0}recorded in the s.mple with x=0 a. a.microwa.e opera.ing frequency of 22.2 *** high va.ue of s.tura.ion ma.netiza.ion is.due to the s.bs.itution of La.+ions.a. the s.in-up(12k,2a.a.d 2b)*** Ni s.bs.itution is.proven to be a.potentia. ca.dida.e for the tuning of the optica. a.d ma.netic pa.a.eters.of M-type ***,we s.gges. tha. the prepa.ed s.mples.a.e s.ita.le for us. in ma.neto-optic a.plica.ions.

关键词： M-type hexa.errite na.os.ructured ma.eria.s ma.netic properties optica. properties