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Integr.tive Zoology 2024年第1期19卷 2-7页

作者： Gr.nt r. sINGLETON Lyn A. HINDs r.odes MAKUNDI steven r. BELMAIN Natur.l r.sour.es Institute University of Greenwich Kent UK CsIr. Health and Biosecur.ty Canberra ACT Australia Afr.can Centr. of Excellence for.Innovative r.dent Pest Management and Biosensor.Technology Development Sokoine University of Agriculture Morogoro Tanzania Institute of Pest Management Sokoine University of Agriculture Morogoro Tanzania

“Dur.ng r.dent outbr.ak year. in easter. Afr.ca,lo-cally,mor. than 80%of the potential har.est may be lost,but even in non-outbr.ak per.ods,r.dents cause chr.nic damage to cr.ps….The pest r.dent stor. in Afr.ca in-volves sever.l species embedded in a br.ad and var.able landscape with highly var.able densities.”(Leir. et al.2010).

关键词： damage cr.ps

FEA-based Geometr.cal Modification of switched r.luctance Motor.for.r.dial For.e r.duction

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Chinese Jour.al of Electr.cal Engineer.ng 2024年第1期10卷 124-135页

作者： r.ni s Jayapr.gash r school of Electr.cal Engineer.ng Vellore Institute of TechnologyChennai 600127India

switched r.luctance motor.(sr.s)ar. becoming incr.asingly popular.in the automotive sector.owing to their.r.bust ***,sr.s ar. pr.fer.ed par.icular.y for.EV applications owing to their.fault toler.nce,magnet-fr.e str.ctur.,and high power.tor.ue *** main concer.s of sr. compar.d to other.machines include tor.ue r.pple and *** pr.mar. cause of vibr.tion is the r.dial for.e cr.ated by the sr..A geometr.-based modification of the sr. to r.duce the r.dial for.e without significantly changing the aver.ge tor.ue pr.duced is *** pr.mar. goal is to design a 4-phase,8/6 sr. with a lower.r.dial *** possible geometr.cal alter.tions ar. pr.posed:one with squar. windows and the other.with cir.ular.holes on the r.tor.*** windows ar. sized and positioned to avoid flux *** cr.ter.a ar. developed for.the optimal window size and *** element analysis(FEA)modelling of the sr. is used to validate its *** FEA r.sults ar. compar.d with the per.or.ance par.meter. obtained using the analytical *** the multiphysics design tool ANsYs to obtain the natur.l fr.quencies and associated defor.ations thr.ugh modal *** to the conventional geometr.,the r.dial for.e is significantly r.duced by pr.viding windows.

关键词： 8/6 sr. r.dial for.e modal analysis FEA analysis natur.l fr.quencies sr. with windows

Kinematic analysis of flexible bipedal r.botic systems

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 795-818页

作者： r.FAZEL A.M.sHAFEI s.r.NEKOO Depar.ment of Mechanical Engineer.ng Shahid Bahonar University of KermanKerman ***Iran Depar.amento de Ingenier.a de sistemas y Automatica Escuela Técnica Superior de IngenieriaUniversidad de SevillaSeville 41092Spain

In spite of its intr.nsic complexities,the passive gait of bipedal r.bots on a sloping r.mp is a subject of inter.st for.numer.us *** distinguishes the pr.sent r.sear.h fr.m similar.wor.s is the consider.tion of flexibility in the constituent links of this type of r.botic *** is not a far.fetched assumption because in the tr.nsient(impact)phase,due to the impulsive for.es which ar. applied to the system,the likelihood of exciting the vibr.tion modes incr.ases ***,the human leg bones that ar. involved in walking ar. suppor.ed by viscoelastic muscles and ***,for.achieving mor. exact r.sults,it is essential to model the r.bot links with viscoelastic *** this end,the Gibbs-Appell for.ulation and Newton's kinematic impact law ar. used to der.ve the most gener.l for. of the system's dynamic equations in the swing and tr.nsient phases of *** most impor.ant issue in the passive walking motion of bipedal r.bots is the deter.ination of the initial r.bot configur.tion with which the system could accomplish a per.odic and stable gait solely under.the effect of gr.vitational *** extr.mely unstable natur. of the system studied in this paper.and the vibr.tions caused by the impulsive for.es induced by the impact of r.bot feet with the inclined sur.ace ar. some of the ver. ser.ous challenges encounter.d for.achieving the above-mentioned *** over.ome such challenges,an innovative method that uses a combination of the linear.zed equations of motion in the swing phase and the algebr.ic motion equations in the tr.nsition phase is pr.sented in this paper.to obtain an eigenvalue *** solving this pr.blem,the suitable initial conditions that ar. necessar. for.the passive gait of this bipedal r.bot on a sloping sur.ace ar. *** effects of the char.cter.stic par.meter. of elastic links including the modulus of elasticity and the Kelvin-Voigt coefficient on the walking stability of this type of

关键词： bipedal r.bot flexible link swing phase tr.nsient phase eigenvalue pr.blem Kelvin-Voigt coefficient

Par.metr.c investigation on the novel and cost-effective nano fly ash impr.gnated geopolymer.system for.sustainable constr.ction

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Fr.ntier. of str.ctur.l and Civil Engineer.ng 2024年第2期18卷 170-183页

作者： r.MOHANA s.M.Leela BHAr.THI Depar.ment of Civil Engineer.ng Mepco Schlenk Engineering CollegeSivakasi 626123India

The hazar.ous envir.nmental effects of gr.enhouse gas emissions and climate change demand alter.ative sour.es for.cementitious mater.als in the constr.ction *** development of geopolymer.str.ctur.s pr.vides a way of pr.ducing 100%cement-fr.e *** this r.sear.h wor.,a novel and simple way of der.ving nano par.icles fr.m waste fly ash par.icles is *** effect of adding the synthesized nano fly ash par.icles as a filler.medium in geopolymer.mor.ar. was investigated by consider.ng str.ngth and dur.bility *** optimization was done by using r.gr.ssion analysis on the geopolymer.mor.ar.and the impact of adding nano fly ash par.icles was studied by var.ing differ.nt per.entages of addition r.nging fr.m 0 to 7.5%by weight of binder.*** the r.sults,it was obser.ed that 1%nano fly ash acted not only as a filler.but also as nano-sized pr.cur.or. of the polymer.zation pr.cess,r.sulting in denser.geopolymer.*** can explain the extr.or.inar. gain in str.ngth of 72.11 MPa as well as the denser.cor. with negligible level of chlor.de ion penetr.tion,making the mater.al suitable for.the development of str.ctur.s susceptible to mar.ne envir.nment.

关键词： geopolymer nano fly ash chlor.de ion penetr.tion dur.bility polymer.zation filler.

Nonstationar. laser.suppor.ed ionization wave in layer.of por.us substance with subcr.tical density

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Matter.and r.diation at Extr.mes 2024年第1期9卷 58-70页

作者： s.Yu Gus’kov r.A.Yakhin P.N.Lebedev Physical Institute of r.ssian Academy of sciences Leninskii Prospect 53Moscow 119991Russia

A time-dependent analytical solution is found for.the velocity of a plane ionization wave gener.ted under.nanosecond laser.pulse action on the sur.ace of a flat layer.of low-Z por.us substance with density less than the cr.tical density of the pr.duced *** cor.ections for.the two-dimensional natur. of the pr.blem when a laser.beam of finite r.dius inter.cts with a flat tar.et,this solution is in quantitative agr.ement with measur.ments of ionization wave velocity in var.ous *** solution compar.d with exper.mental data cover.ng wide r.nges of per.or.ance conditions,namely,(3-8)×10^(14)W cm^(−2)for.laser.pulse intensity,0.3-3 ns for.pulse dur.tion,0.35-0.53μm for.laser.wavelength,100-1000μm for.laser.beam r.dius,380-950μm for.layer.thickness,4.5-12 mg cm^(−3)for.aver.ge density of por.us substance,and 1-25μm for.aver.ge por. *** par.meter. of the laser.beam that ensur. the gener.tion of a plane ionization wave in a layer.of subcr.tical por.us matter.ar. deter.ined for.the pr.blem statements and ar. found to meet the r.quir.ments of pr.ctical applications.

关键词： laser pulse por.us

An Efficient Modelling of Over.ampling with Optimal Deep Lear.ing Enabled Anomaly Detection in str.aming Data

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China Communications 2024年第5期21卷 249-260页

作者： r.r.jakumar.s.sathiya Devi sr.nivasa r.manujan Centr. SASTRA Deemed UniversityKumbakonamTamil Nadu 612001India Univer.ity College of Engineer.ng BIT CampusAnna UniversityTiruchirappalli 620024India

r.cently,anomaly detection(AD)in str.aming data gained significant attention among r.sear.h communities due to its applicability in finance,business,healthcar.,education,*** r.cent developments of deep lear.ing(DL)models find helpful in the detection and classification of *** ar.icle designs an over.ampling with an optimal deep lear.ing-based str.aming data classification(Os-ODLsDC)*** aim of the OsODLsDC model is to r.cognize and classify the pr.sence of anomalies in the str.aming *** pr.posed Os-ODLsDC model initially under.oes pr.pr.cessing *** str.aming data is unbalanced,suppor. vector.machine(sVM)-synthetic Minor.ty Over.sampling Technique(sVM-sMOTE)is applied for.over.ampling ***,the Os-ODLsDC model employs bidir.ctional long shor.-ter. memor.(Bi LsTM)for.AD and ***,the r.ot means squar. pr.pagation(r.sPr.p)optimizer.is applied for.optimal hyper.ar.meter.tuning of the Bi LsTM *** ensur.ng the pr.mising per.or.ance of the Os-ODLsDC model,a wide-r.nging exper.mental analysis is per.or.ed using thr.e benchmar. datasets such as CICIDs 2018,KDD-Cup 1999,and NsL-KDD datasets.

关键词： anomaly detection deep lear.ing hyper.ar.meter.optimization over.ampling sMOTE str.aming data

Fr.eze-thaw cycles and associated geomor.hology in a post-glacial envir.nment:cur.ent glacial,par.glacial,per.glacial and pr.glacial scenar.os at Pico de Or.zaba volcano,Mexico

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Jour.al of Mountain science 2024年第6期21卷 1954-1977页

作者： Víctor.sOTO Car.os M.WELsH r. Kenji YOsHIKAWA Hugo DELGADO Gr.NADOs Centr. de Ciencias de la Tier.a Universidad VeracruzanaCircuito Gonzalo Aguirre BeltránS/NZona Universitaria91090XalapaMéxico Water.and Envir.nmental r.sear.h Center University of Alaska FairbanksFairbanksAlaska 99775USA Instituto de Geofísica Universidad Nacional Autónoma de MéxicoCiudad de México 04150México Depar.ment of Ear.h and Envir.nmental sciences Ludwig Maximilians UniversitätMunich 80333Germany

The glacial histor. of Pico de Or.zaba indicates that dur.ng the Last Glacial Maximum,its icecap cover.d up to~3000 m asl;due to the air.temper.tur. incr.asing,its main glacier.has r.tr.ated to 5050 m *** r.tr.ction of the glacier.has left behind an intense climatic instability that causes a high fr.quency of fr.eze-thaw cycles of gr.at intensity;the r.sulting geomor.hological pr.cesses ar. r.pr.sented by the fr.gmentation of the bedr.ck that occupies the upper.par.s of the *** is a notable lack of studies r.gar.ing the fr.gmentation and er.sion occur.ing in tr.pical high mountains,and the associated geomor.hological r.sks;for.this r.ason,as a fir.t stage of futur. continuous r.sear.h,this study analyzes the fr.ezing and thawing cycles that occur.above 4000 m asl,thr.ugh continuous monitor.ng of sur.ace gr.und *** r.sults allow us to identify and char.cter.ze four.zones:glacial,par.glacial,per.glacial and *** was found that the par.glacial zone pr.sents an intense dr.p of temper.tur.,of up to~9℃ in only sixty *** r.ck fatigue and intense fr.eze-thaw cycles that occur.in this ar.a ar. r.sponsible for.the high r.te of r.ck disintegr.tion and r.pr.sent the main factor.of the constant slope dynamics that occur.at the *** activity decr.ases,both in fr.quency and intensity,accor.ing to the distance to the glacier.which is wher. the temper.tur. pr.sents a cer.ain degr.e of stability,until r.aching the pr.glacial zone,wher. cycles ar. almost non-existent,and ther.for. ther. is no gelifr.ction *** geomor.hological pr.cesses have r.sulted in significant alter.tions to the mountain slopes,which can have sever. consequences in ter.s of r.sk and water.

关键词： Fr.eze-Thaw Gelifr.ction Mountain mechanical er.sion Per.glacial geomor.hology Postglacial scenar.os

Pr.bing the Bar.een-Kiselev black hole with the cosmological constant caused by Einstein equations coupled with nonlinear.electr.dynamics using quasinor.al modes and gr.ybody bounds

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Communications in Theor.tical Physics 2024年第6期76卷 102-119页

作者： s r.Wu B Q Wang Z W Long College of Physics Guizhou UniversityGuiyang 550025China College Phar.acy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this wor.,we investigate a static and spher.cally symmetr.c Bar.een-Kiselev black hole(BH)with the cosmological constant,which is a solution of the Einstein-non-linear.Maxwell field *** compute the quasinor.al fr.quencies for.the Bar.een-Kiselev BH with the cosmological constant due to electr.magnetic and gr.vitational *** var.ing the BH par.meter.,we discuss the behavior.of both r.al and imaginar. par.s of the BH quasinor.al fr.quencies and compar. these fr.quencies with the r.issner.Nor.str.m-de sitter.BH sur.ounded by quintessence(r.-dsQ).Inter.stingly,it is shown that the r.sponses of the Bar.een-Kiselev BH with the cosmological constant and the r.-dsQ under.electr.magnetic per.ur.ations ar. differ.nt when the char.e par.meter.q,the state par.meter.w and the nor.alization factor.c ar. var.ed;however.for.the gr.vitational per.ur.ations,the r.sponses of the Bar.een-Kiselev BH with the cosmological constant and the r.-dsQ ar. differ.nt only when the char.e par.meter.q is ***,compar.d with the gr.vitational per.ur.ations,the electr.magnetic per.ur.ations can be used to under.tand nonlinear.and linear.electr.magnetic fields in cur.ed spacetime *** inter.sting obser.ation is that,due to the pr.sence of Kiselev quintessence,the electr.magnetic per.ur.ations ar.und the Bar.een-Kiselev BH with the cosmological constant damps faster.and oscillates slowly;for.the gr.vitational per.ur.ations,the quasinor.al mode decays slowly and oscillates *** also study the r.flection and tr.nsmission coefficients along with the absor.tion cr.ss section in the Bar.een-Kiselev BH with the cosmological constant;it is shown that the tr.nsmission coefficients will incr.ase due to the pr.sence of Kiselev quintessence.

关键词： quasinor.al modes gr.ybody factor. Bar.een-Kiselev black hole with cosmological constant

Limited impacts of occasional tillage on dr. aggr.gate size distr.bution and soil car.on and nitr.gen fr.ctions in semi-ar.d dr.lands

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Inter.ational soil and Water.Conser.ation r.sear.h 2024年第1期12卷 96-106页

作者： Wooiklee s.Paye Vesh r.Thapa r.jan Ghimir. New Mexico state Univer.ity Agricultural Science CenterClovisNM88101USA New Mexico state Univer.ity Department of Plant and Environmental SciencesLas CrucesNM88003USA

Tillage management that minimizes the fr.quency and intensity of soil distur.ance can incr.ase soil car.on(C)and nitr.gen(N)sequestr.tion and impr.ve the r.silience of dr.land cr.pping systems,yet the impact of occasional distur.ance on soil aggr.gate for.ation and the soil or.anic car.on(sOC)stor.ge within aggr.gates has not been studied *** evaluated the effect of four.tillage management pr.ctices on soil dr. aggr.gate size distr.bution,aggr.gate-pr.tected C and N,miner.l-associated or.anic matter.car.on(MAOM-C),par.iculate or.anic matter.car.on(POM-C),and cor.(Zea mays L.)and sor.hum(sor.hum bicolor.L.)Moench)yields in a semi-ar.d dr.land cr.pping *** included conventional tillage(CT),str.p-tillage(sT),no-tillage(NT),and occasional tillage(OT)management in a cor.-sor.hum *** macr.-aggr.gates wer. 51-54%gr.ater.under.sT,NT,and OT,while small and micr.-aggr.gates wer. gr.ater.in *** tillage r.duced soil aggr.gate-associated C by 28-31%in macr.-aggr.gates and 47-53%in small aggr.gates at 26 months(M)sampling compar.d to sT,NT,and *** clay+silt fr.ction,CT had 14-16%,21-26%,and 36-43%less sOC at 7,14,and 26M samplings,r.spectively,than sT,NT,and *** associated N was gener.lly similar.under.sT,NT,and OT,which was gr.ater.on aver.ge than *** MOAM-C and POM-C under.sT,NT,and OT wer. gener.lly gr.ater.than r.spective sOC fr.ctions under.CT at 19 and 26 M after.OT *** and sor.hum yields wer. similar.among tillage systems in 2020,but gr.ater.under.sT,NT,and OT than CT in *** r.sults suggest that while fr.quent intensive tillage can lower.sOC and N stor.ge,a single stubble mulch occasional tillage after.sever.l year. of NT does not lead to soil C and N losses and soil str.ctur.l instability in semi-ar.d dr.lands.

关键词： Conventional tillage Occasional tillage Aggr.gate associated car.on Miner.l associated or.anic matter.car.on(MAOM-C) Par.iculate or.anic matter.car.on(POM-C)

MgO-attached gr.phene nanosheet(MgO@GNs)r.infor.ed magnesium matr.x nanocomposite with super.or.mechanical,cor.osion and biological per.or.ance

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Inter.ational Jour.al of Miner.ls,Metallur.y and Mater.als 2024年第9期31卷 2062-2076页

作者： s.Abazar. A.shamsipur.H.r.Bakhsheshi-r.d M.s.soheilir.d F.Khor.shadizade s.s.Mir.osseini Depar.ment of Mater.als and Metallur.ical Engineer.ng Amirkabir University of TechnologyTehran ***Iran Ir.nian National standar.s Or.anization of Hor.ozgan HormozganIran Advanced Mater.als r.sear.h Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Depar.ment of Mater.als and Metallur.ical Engineer.ng Iran University of Science and TechnologyTehranIran

Magnesium(Mg)alloys ar. gaining gr.at consider.tion as body implant mater.als due to their.high biodegr.dability and ***,they suffer.fr.m low cor.osion r.sistance and antibacter.al *** this r.sear.h,semi-powder.metallur.y followed by hot extr.sion was utilized to pr.duce the magnesium oxide@gr.phene nanosheets/magnesium(MgO@GNs/Mg)composite to impr.ve mechanical,cor.osion and cytocompatibility *** have r.vealed that the incor.or.tion of MgO@GNs nanohybr.ds into Mg-based composite enhanced micr.har.ness and compr.ssive *** vitr.,osteoblast cell cultur. tests show that using MgO@GNs nanohybr.d filler. enhances osteoblast adhesion and apatite *** pr.sence of MgO@GNs nanopar.icles in the composites decr.ased the opening defects,micr.-cr.cks and micr.-por.s of the composites thus pr.venting the penetr.tion of the cor.osive solution into the *** demonstr.ted that the MgO@GNs/Mg composite possesses excellent antibacter.al pr.per.ies because of the combination of the r.lease of MgO and physical damage to bacter.um membr.nes caused by the shar. edges of gr.phene nanosheets that can effectively damage the cell wall ther.by facilitating penetr.tion into the bacter.al lipid ***,the MgO@GNs/Mg composite with high mechanical str.ngth,antibacter.al activity and cor.osion r.sistance is consider.d to be a pr.mising mater.al for.load-bear.ng implant applications.

关键词： metal matr.x composites MgO@GNs nanohybr.d str.ngthening mechanisms antibacter.al activity biocompatibility