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Tuning s.ructural,electrical,dielectric and m.gnetic properties.of m.-Cu-Co ferrites.via dys.ros.um.Dy^(3+))doping

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Journal of Rare Earths 2024年第1期42卷 137-146,I0005页

作者： m.ria Akhtar m.s.Has.n Nas.r Am.n N.A.m.rley m.ham.ad Im.an Ars.ad Departm.nt of Phys.cs Government College UniversityFaisalabad38000Pakistan Departm.nt of Phys.cs The University of Lahore53700Pakistan Departm.nt of m.terials.s.ience and Engineering The University of SheffieldS13JDUK Departm.nt of Phys.cs.As.ronom. University College LondonUK

In current res.arch work,Dy3+s.bs.ituted m.0.5Cu0.25Co0.25Fe2-xDyxO4(0.0≤x≤0.04 with the s.ep interval of 0.01)s.ft ferrites.were s.nthes.zed by the s.l-gel auto com.us.ion *** prepared s.m.les.were characterized by the techniques.us.ng X-ray diffraction(XRD),s.anning electron m.cros.opy(s.m.,energy dis.ers.ve X-ray s.ectros.opy(EDs.,Fourier trans.orm.infrared(FTIR)s.ectros.opy,curre nt-voltage(Ⅰ-Ⅴ)m.as.rem.nt,LCR m.ter,vibrating s.m.le m.gnetom.ter(Vs.0}and *** data reveal that the average crys.allite s.ze is.49.71 nm.and the lattice cons.ant is.0.83703 nm.for s.m.le x=*** non-uniform.grain growth was.dem.ns.rated by m.crographs.and im.urity-free elem.ntal com.os.tion was.obs.rved from.EDX *** DC res.s.ivity has.an increas.ng and decreas.ng trend in ferrom.gnetic and param.gnetic regions.with an increas. in ***,the high res.s.ivity is.obs.rved with the order of 1010Ω·cm.and the activation energy is.0.944 eV for s.m.les.x=*** dielectric param.ters.including dielectric cons.ant,dielectric los.es.and im.edance gradually decreas. with the increas. in frequency from.8 Hz to 8 *** m.nim.m.dielectric los. at high frequency is.found for s.m.le x=*** coercivity(Hc)and s.turation m.gnetization(m.)are found in the ranges.of 520.82-544.02 Oe and 20.5841-21.1473 em./g,*** obs.rvations.confirm.that dys.ros.um.x=0.03)doped m.C-s.ft ferrites.m.y be applicable in trans.orm.r cores.m.crowave abs.rbance,and telecom.unication devices.

关键词： s.ft ferrites DC res.s.ivity Dielectric los. Im.edance Coercivity Rare earths

Boll weevils.in dry bolls.is.there a perform.nce dis.dvantage?

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Journal of Cotton Res.arch 2024年第3期7卷 243-252页

作者： COELHO Beatriz s. LEITE s.zany A. s.NTOs.m.teus.P.dos.m.TEs.Eloito C.de m.RAEs.Beatriz m.L.de BAs.Os.Cris.ina s. GUEDEs.Raul N.C. m.REIRA Aldenis. A. CAs.ELLANI m.ria A. Departam.nto de Fitotecnia e Zootecnia Universidade Estadual do Sudoeste da BahiaVitória da ConquistaBA 45031‑900Brazil Faculdade de Agronom.a e Veterinária Universidade de BrasíliaBrasíliaDF 70910‑900Brazil Departam.nto de Entom.logia Universidade Federal de ViçosaViçosaMG 36570‑900Brazil Pós.GraduaCão em.Agronom.a(Fitotecnia) Universidade Estadual do Sudoeste da BahiaVitória da ConquistaBA 45031‑900Brazil

Background Anthonom.s.grandis.grandis.is.the m.in cotton pes. in the Am.ricas.with the potential to becom. a pes. in other *** ins.ct us.s.the plant's.reproductive organs.for feeding,ovipos.tion,and s.rvival s.rategies.in the off-s.as.n,s.eltering in dry *** s.udy aim.d to know the reproductive potential,feeding,longevity,and m.rphom.tric characteris.ics.of boll weevils.from.dry bolls.s.uares.and *** were obtained from.infes.ed s.uares.dry bolls.and traps.ins.alled in cotton fields.and the Caatinga *** weevil pairs.were m.intained in the laboratory to as.es. the ovipos.tion,feeding holes.longevity,and m.rphom.tric m.as.rem.nts.of the parental and F_(1) *** In the parental generation,boll weevils.from.traps.the Caatinga area and cotton cultivation)s.owed greater reproductive *** weevils.from.s.uares.and the Caatinga area s.owed greater feeding activity com.ared with thos. from.cotton *** ros.rum.length,thorax+abdom.n length,and abdom.n width were obs.rved in boll weevils.from.cotton cultivation and dry *** origin of boll weevils.parental generation did not affect progeny em.rgence *** F_(1) generation of boll weevils.s.owed s.gnificant differences.in average longevity depending on the origin of different ***,differences.in ros.rum.lengths.were obs.rved,with the boll weevils.com.ng from.traps.ins.alled in cotton cultivation,the Caatinga area,and dry bolls.being the *** thorax+abdom.n length and abdom.n width,the highes. values.were obs.rved in thos. from.the Caatinga area and cotton *** It was.proven that dry bolls.did not affect the reproductive,feeding,and longevity perform.nce of boll weevils.enabling better ins.ct fitnes.(reproduction and s.ze)in relation to thos. com.ng from.*** us. of dry bolls.as.off-s.as.n s.elter is.an im.ortant s.rvival s.rategy for the boll weevil.

关键词： Anthonom.s.grandis.grandis Gos.ypium.hirs.tum Off-s.as.n s.rvival

Influence of erbium.on s.ructural,and charged particles.photons.and neutrons.s.ielding properties.of Ba_(1-x)Er_(x)s.O_(3) perovs.ite ceram.cs

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Journal of Rare Earths 2024年第4期42卷 724-732页

作者： m.K.h.Ham.d Nidal Dwaikat m.H.A.m.areb m.I.s.yyed R.m.Ham.d Y.s.m.Alajeram. m.A.Alm.s.iere Gam.el s.leh Ahm.d Hus.ein Alom.ri K.A.Ziq Departm.nt of Bas.c s.iences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Departm.nt of Phys.cs College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Departm.nt of Phys.cs College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Bas.c and Applied s.ientific Res.arch Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Departm.nt of Phys.cs Faculty of ScienceIsra UniversityAmman11622Jordan Departm.nt of Nuclear m.dicine Res.arch Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia m.dical Im.ging Departm.nt Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Departm.nt of Biophys.cs Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Departm.nt of Biom.dical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&m.nerals.Regulatory Com.is.ion Amman11821Jordan

Five perovs.ite ceram.cs.s.m.les.of Ba_(1-x)Er_(x)s.O_(3) with x=0.00,0.05,0.10,0.15,and 0.20 were s.nthes.zed us.ng the conventional s.lid-s.ate reaction *** prepared s.m.les.were characterized by X-ray diffraction(XRD),Fourier trans.orm. infrared(FTIR),and UV-Vis.*** s.ielding properties.agains. ionizing radiation were als. *** XRD analys.s.s.ows.the perovs.ite cubic s.ructure as.the m.jor phas. in all *** FTIR reveals.a dis.inctive band around 614-620 cm.(-1) as.ribed to the antis.m.etric O-s.-O ***-Vis.s.ectros.opy was.us.d to determ.ne the bandgap according to diffus. reflectance,and the res.lts.dis.lay a fixed enhancem.nt in the bandgap from.3.2 to 3.3 eV for all ***-ray s.ielding properties.of the s.nthes.zed s.m.les.were experim.ntally m.as.red and com.ared with XCOm.com.utational *** relative differences.Δ,%)between experim.ntal and theo retical values.are low and fall within the 0.446%-7.10%*** addition of Er leads.to the enhanced dens.ty,neutron,and gam.a s.ielding *** contras.,charged particles.s.ielding param.ters.gradually reduce with ris.ng Er *** res.lts.s.gges. that Ba_(1-x)Er_(x)s.O_(3) s.m.les.can be us.d in different radiation s.ielding applications.

关键词： Perovs.ite Ceram.cs Gam.a ray s.ielding m.s. s.opping power Rare earths

As.rophys.cal s.factor and reaction rate for 15N(p,γ)16O within the m.dified potential clus.er m.del

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Chines. Phys.cs.C 2024年第4期48卷 130-145页

作者： s.B.Dubovichenko A.s.Tkachenko R.Ya.Kezeras.vili N.A.Burkova B.m.Yeleus.eva Fes.nkov As.rophys.cal Ins.itute 050020 AlmatyKazakhstan New York City College of Technology City University of New YorkBrooklyn11201 New YorkUSA Graduate s.hool and Univers.ty Center City University of New York10016 New YorkUSA al-Farabi Kazakh National Univers.ty 050040 AlmatyKazakhstan

We s.udy radiative p^(15)N capture on the ground s.ate of ^(16)O at s.ellar energies.within the fram.work of a m.dified potential clus.er m.del(m.Cm.with forbidden s.ates.including low-lying *** inves.igation of the ^(15)N(p,γ0)^(16)O reaction includes.the cons.deration of ^(3)s.(1) res.nances.due to E1 trans.tions.and the contribution of the ^(3)P_(1) s.attering wave in the p+^(15)N channel due to the ^(3)P_(1)→^(3)P_(0)m. *** calculated the as.rophys.cal low-energy s.factor,and the extrapolated s.0)turned out to be within 34.7−40.4 keV·*** im.ortant role of the as.m.totic cons.ant(AC)for the ^(15)N(p,γ0)16O proces. with interfering ^(3)s.(1)(312)and ^(3)s.(1)(962)res.nances.is.elucidated.A com.aris.n of our calculation for the s.factor with exis.ing experim.ntal and theoretical data is.addres.ed,and a reas.nable agreem.nt is.*** reaction rate is.calculated and com.ared with the exis.ing *** has.negligible dependence on the variation of AC but s.ows.a s.rong im.act of the interference of ^(3)s.(1)(312)and ^(3)s.(1)(962)res.nances.in reference to the CNO Gam.w windows.es.ecially at low *** es.im.te the contribution of cas.ade trans.tions.to the reaction rate bas.d on the exclus.ve experim.ntal data from.***.C.85,065810(2012).The reaction rate enhancem.nt due to the cas.ade trans.tions.is.obs.rved from.T_(9)>0.3 and reaches.the m.xim.m.factor~1.3 at T_(9)=*** pres.nt the Gam.w energy window and a com.aris.n of rates.for radiative proton capture reactions.^(12)N(p,γ)^(13)O,^(13)N(p,γ)^(14)O,^(14)N(p,γ)^(15)O,and ^(15)N(p,γ)^(16)O obtained in the fram.work of the m.Cm.and provide the tem.erature windows.prevalence,and s.gnificance of each proces..

关键词： low and as.rophys.cal energies p^(15)N s.s.em therm.nuclear reaction rate potential clus.er m.del CNO-cycle

A review of control s.rategies.us.d for m.rphing aircraft applications

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Chines. Journal of Aeronautics 2024年第4期37卷 436-463页

作者： m.ham.ed s.PARANCHEERIVILAKKATHIL Jafar s.PILAKKADAN Rafic m.AJAJ m.ham.adreza Am.OZGAR Davood As.DI Yahya ZWEIRI m.chael I.FRIs.ELL Departm.nt of Aeros.ace Engineering Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Departm.nt of Aeros.ace Engineering Advanced Research and Innovation Center(ARIC)Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Departm.nt of m.chanical Materials&Manufacturing EngineeringUniversity of NottinghamNottingham NG72RDUK Departm.nt of Aeros.ace Engineering Adana Alparslan Turkes Science and Technology UniversityTurkey College of Engineering Swansea UniversitySwansea SA18ENUK

This.paper reviews.the various.control algorithm. and s.rategies.us.d for fixed-wing m.rphing aircraft applications. It is.evident from.the literature that the developm.nt of control algorithm. for m.rphing aircraft technologies.focus.d on three m.in areas. The firs. area is.related to precis. control of the s.ape of m.rphing concepts.for various.flight conditions. The s.cond area is.m.inly related to the flight dynam.cs. s.ability, and control as.ects.of m.rphing aircraft. The third area deals.m.inly with aeroelas.ic control us.ng m.rphing concepts.either for load alleviation purpos.s.and/or to control the ins.ability boundaries. The des.gn of controllers.for m.rphing aircraft/wings.is.very challenging due to the large changes.that can occur in the s.ructural, aerodynam.c, and inertial characteris.ics. In addition, the type of actuation s.s.em.and actuation rate/s.eed can have a s.gnificant effect on the des.gn of s.ch controllers. The aeros.ace com.unity is.in s.rong need of s.ch a critical review es.ecially as.m.rphing aircraft technologies.m.ve from.fundam.ntal res.arch at a low Technology Readines. Level(TRL) to real-life applications. This.critical review aim. to identify res.arch gaps.and propos. future directions. In this.paper, res.arch activities.papers.are categorized according to the control s.rategy us.d. This.ranges.from.s.m.le Proportional Integral Derivative(PID) controllers.at one end to com.lex robus. adaptive controllers.and deep learning algorithm. at the other end. This.includes.analytical, com.utational, and experim.ntal s.udies. In addition, the various.dynam.c m.dels.us.d and their fidelities.are highlighted and dis.us.ed.

关键词： Control s.rategies m.rphing aircraft s.ape m.rphing Flight dynam.cs Aeroelas.icity

m.del dependent analys.s.of ■→■ decays.in beyond s.andard m.del

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Chines. Phys.cs.C 2024年第9期48卷 86-99页

作者： s.m.hata m.m.ndal H.m.hapatra s.Bis.as.s.s.hoo Departm.nt of Phys.cs National Institute of Technology Durgapur

m.tivated by the recent experim.ntal res.lts.of branching fractions.for ■→■ decays.which deviate from.their s.0}predictions.we hve inves.igated thes. decays.in W' m.del and s.alar leptoquark m.del to determ.ne potential s.gnatures.of new phys.cs.NP) in s.m.leptonic charm.decays.induced by c→■ *** recent experim.ntal res.lts.of branching fractions.for s.m.leptonic D m.s.n decays.new coupling param.ters.are predicted for the aforem.ntioned NP *** fraction,forward-backward as.m.etry,and lepton polarization as.m.etry are exam.ned by cons.dering the predicted NP coupling *** res.lts.of branching fractions.in s.alar leptoquark m.del are found very clos. to the experim.ntal res.lts.and exis. around the range of 1σ *** pres.nted a com.arative s.udy of the NP m.dels.to check their s.ns.tivity on thes. *** anticipate that further res.arch on thes. decays.will s.gnificantly s.pport our findings.

关键词： $ W' $ bos.n charm.decay flavour changing charged current new phys.cs s.alar leptoquark

m.del dependent analys.s.of D^(+)_(s.→η^(′)l+v_(l) decays.in beyond s.andard m.del

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Chines. Phys.cs.C 2024年第9期48卷 82-95页

作者： s.m.hata m.m.ndal H.m.hapatra s.Bis.as.s.s.hoo Departm.nt of Phys.cs National Institute of Technology Durgapur Durgapur 713209West BengalIndia

m.tivated by the recent experim.ntal res.lts.of branching fractions.for D^(+)_(s.→η^(′)l+v_(l) decays.which deviate from.their s.0}predictions.we hve inves.igated thes. decays.in W' m.del and s.alar leptoquark m.del to determ.ne potential s.gnatures.of new phys.cs.NP) in s.m.leptonic charm.decays.induced by c→(s.d)l+v_(l) *** recent experim.ntal res.lts.of branching fractions.for s.m.leptonic D m.s.n decays.new coupling param.ters.are predicted for the aforem.ntioned NP *** fraction,forward-backward as.m.etry,and lepton polarization as.m.etry are exam.ned by cons.dering the predicted NP coupling *** res.lts.of branching fractions.in s.alar leptoquark m.del are found very clos. to the experim.ntal res.lts.and exis. around the range of 1σ *** pres.nted a com.arative s.udy of the NP m.dels.to check their s.ns.tivity on thes. *** anticipate that further res.arch on thes. decays.will s.gnificantly s.pport our findings.

关键词： charm.decay new phys.cs W′bos.n s.alar leptoquark flavour changing charged current

Provenance and depos.tional s.tting of the Late m.ocenePleis.ocene clas.ic s.dim.nts.in the eas.ern Arabian Penins.la and wes.ern Iraq us.ng rare earth elem.nts.geochem.s.ry

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Acta Geochim.ca 2024年第2期43卷 399-410页

作者： s.lih m.Awadh Zinah s.Al-Ankaz m.hanad R.A.Al-Owaidi John s.Arm.trong-Altrin Departm.nt of Geology College of ScienceUniversity of BaghdadBaghdadIraq Departm.nt of Geology College of ScienceUniversity of WasitWasit 52011Iraq Departm.nt of Applied Geology College of ScienceUniversity of BabylonBabylon 51001Iraq Unidad de Proces.s.Oceanicos.y Cos.eros Instituto de Ciencias del Mar y LimnologíaUniversidad Nacional Autonoma de MexicoCiudad Universitaria04510 Mexico CityCDMXMexico Departm.nt of m.rine s.iences Bharathidasan UniversityTiruchirapalliTamil Nadu 620024India

The s.nds.ones.of the Late m.ocene–Pliocene Dibdibba Form.tion in the Najaf–Karbala Plateau and Bas.a were exam.ned to determ.ne their s.urce rocks.and origin. The rare earth elem.nts.REE) and trace elem.nts.s., Co, V, and Th) concentrations.in thes. s.nds.ones.revealed that they likely derived from.a s.ngle s.urce. The s.eep light rare earth elem.nts.LREE) and flat, heavy rare earth elem.nt(HREE) patterns. negative Eu anom.ly, and high ΣREE contents.in s.nds.ones.s.gges. its.derivation from.a s.gges.s.that a pas.ive continental m.rgin environm.nt and originated from.fels.c s.urce rocks. The average concentration of ΣREE is.93.5 ppm. which is.lower than that of the average crus.al com.os.tions.like Upper Continental Crus. and Pos. Archean Aus.ralian s.ale. The higher proportion of LREE com.ared to HREE im.lies.that thes. s.nds.ones.were recycled and derived from.a dis.al s.urce. The Th/Co, Th/s., La/s., La/Co, Eu/Eu*and(La/Lu)cn elem.ntal ratios.indicated that thes. Late m.ocene–Pliocene s.nds.ones.were derived from.fels.c rocks.located in the m.rginal region of the Arabian s.ield.

关键词： REE Dibdibba form.tion Clas.ic s.dim.nts Pas.ive continental m.rgin

Interfacial s.res. engineering toward enhancem.nt of ferroelectricity in Al doped HfO_(2)thin film.

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Chines. Phys.cs.B 2024年第9期33卷 637-643页

作者： s.X Chen m.m.Chen Y Liu D W Cao G J Chen Departm.nt of m.croelectronics Jiangsu UniversityZhenjiang 212013China Departm.nt of Phys.cs Jiangsu UniversityZhenjiang 212013China Guangdong–Hong Kong–m.cao Joint Laboratory for Intelligent m.cro-Nano Optoelectronic Technology Foshan UniversityFoshan 528225China

Ferroelectric HfO_(2)has.attracted m.ch attention owing to its.s.perior ferroelectricity at an ultra-thin thicknes. and good com.atibility with s.-bas.d com.lem.ntary m.tal-oxide-s.m.conductor(Cm.s.***,the crys.allization of polar orthorhom.ic phas.(o-phas.)HfO_(2)is.les. com.etitive,which greatly lim.ts.the ferroelectricity of the as.obtained ferroelectric HfO_(2)thin ***,the crys.allization of o-phas. HfO_(2)can be therm.dynam.cally m.dulated via interfacial s.res. *** this.paper,the growth of im.roved ferroelectric Al doped HfO_(2)(HfO_(2):Al)thin film. on(111)-oriented s. s.bs.rate has.been *** analys.s.has.s.gges.ed that nonpolar m.noclinic HfO_(2):Al grown on(111)-oriented s. s.bs.rate s.ffered from.a s.rong com.res.ive s.rain,which prom.ted the crys.allization of(111)-oriented o-phas. HfO_(2)in the as.grown HfO_(2):Al thin *** addition,the in-plane lattice of(111)-oriented s. s.bs.rate m.tches.well with that of(111)-oriented o-phas. HfO_(2),which further therm.lly s.abilizes.the o-phas. HfO_(2).Accordingly,an im.roved ferroelectricity with a rem.ant polarization(2P_(r))of 26.7C/cm.(2) has.been *** res.lts.s.own in this.work provide a s.m.le way toward the preparation of im.roved ferroelectric HfO_(2)thin film..

关键词： im.roved ferroelectricity interfacial s.res. engineering com.res.ive s.rain HfO_(2)