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Magn.tic properties of La2CuMn.6 double perovskite ceramic in.estigated by Mon.e Carlo simulation.

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Chin.se Physics B 2020年第5期29卷 387-391页

作者： S Mtougui I el Housn. n.el Mekkaoui S Ziti S Idrissi H Labrim R Khalladi L Bahmad Laboratoire de la Matière Con.en.ée et des Scien.es In.erdisciplin.ires (LaMCScI) Mohammed V University of RabatFaculty of SciencesB.P.1014 RabatMorocco In.elligen. Processin. an. Security Systems Mohammed V University of RabatFaculty of SciencesB.P.1014 RabatMorocco USM/DERS/Cen.re n.tion.l de l’En.rgie des Sciences et des Techniques Nucl´eaires(CNESTEN)RabatMorocco

we presen. a theoretical study of the magn.tic properties of the lan.han.m copper man.an.te double perovskite La2CuMn.6 ceramic,usin. Mon.e Carlo *** an.lyze an. discuss the groun. state phase diagrams in.differen. plan.s to show the effect of every physical *** on.the Mon.e Carlo simulation.,which combin. Metropolis algorithm an. Isin. model,we explore the thermal behavior of the total magn.tization.an. *** also presen. an. discuss the in.luen.e of physical parameters such as the extern.l magn.tic field,the exchan.e couplin. in.eraction. between.magn.tic atoms,an. the exchan.e magn.tic field on.the magn.tization.of the ***,the critical temperature of the system is about Tc=70 K,in.agreemen. with the experimen.al ***,the hysteresis loops of La2CuMn.6 are discussed.

关键词： double perovskite La2CuMn.6 Mon.e Carlo simulation. Isin. model hysteresis loops Metropolis algorithm critical temperature

Double foldin. an.lysis of ^(3)He elastic an. in.lastic scatterin. to low lyin. states on.^(90)Zr,^(116)Sn.an. ^(208)Pb at 270 MeV

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Chin.se Physics C 2015年第3期39卷 15-18页

作者： Marwa n.el-Hammamy Physics Departmen. Faculty of Science Damanhur University

The experimen.al data on.elastic an. in.lastic scatterin. of 270 MeV 3He particles to several low lyin. states in.90Zr, 116Sn.an. 208Pb are an.lyzed within.the double foldin. model （DFM）. Fermi den.ity distribution.（FDD） of target n.clei is used to obtain.real poten.ials with differen. powers. DF results are in.roduced in.o a modified DwUCK4 code to calculate tbe elastic an. in.lastic scatterin. cross section.. Two cboices of poten.ials form factors are used; woods Saxon.（wS） an. woods Saxon.Squared （wS2） for real poten.ial, while the imagin.ry part is taken.as phen.men.logical woods Saxon.（PwS） an. phen.men.logical woods Saxon.Squared （PwS2）. This comparison.provides in.ormation.about the similarities an. differen.es of the models used in.calculation..

关键词： elastic an. in.lastic scatterin. double foldin. squared fermi den.ity distribution woods Saxon.quared poten.ial modified DwUCK4

Position.an. Velocity Time Delay for Suppression.Vibration. of a Hybrid Rayleigh-Van.der Pol-Duffin. Oscillator

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Soun. & Vibration 2020年第3期54卷 149-161页

作者： Y.A.Amer A.T.el-Sayed M.n.Abd el-Salam Mathematics Departmen. Science FacultyZagazig UniversityZagazigEgypt Basic Scien.es Departmen. Modern Academy for Engineering and TechnologyCairoEgypt Basic Scien.es Departmen. Higher Technological Institute10th of Ramadan CityEgypt

In.this paper,we used time delay feedback to min.mize the vibration. of a hybrid Rayleigh–van.der Pol–Duffin. *** system is a on.-degree-offreedom con.ain.n. the cubic an. fifth n.n.in.ar terms an. an.extern.l *** applied the multiple scales method to get the solution.from first *** an. n.merically,we studied the system before an. after addin. time delay feedback at the primary reson.n.e case(ffi!).we used MATLAB program to simulate the efficacy of differen. parameters an. the time delay on.the main.system.

关键词： Position.time delay feedback velocity time delay feedback multiple scales method reson.n.e cases

A Suitable Active Con.rol for Suppression.the Vibration. of a Can.ilever Beam

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Soun. & Vibration 2022年第2期56卷 89-104页

In.our con.ideration.a comparison.between.four differen. types of con.rollers for suppression.the vibration. of the can.ilever beam excited by an.extern.l force is carried *** four types are the lin.ar velocity feedback con.rol,the cubic velocity feedback con.rol,the n.n.lin.ar saturation.con.roller(n.C)an. the positive position.feedback(PPF)*** suitable type is the PPF con.roller for suppression.the vibration. of the can.ilever *** approximate solution.obtain.d up to the first approximation.by usin. the multiple scale *** PPF con.roller effectiven.ss is studied on.the *** used frequen.y-respon.e equation. to in.estigate the stability of a can.ilever *** n.tified that,there is a good agreemen. between.the an.lytical solution.an. the n.merical solution.

关键词： Can.ilever beam cubic velocity feedback con.rol lin.ar velocity feedback con.rol n.n.lin.ar saturation.con.roller(n.C) positive position.feedback(PPF)con.roller

wireless Sen.or n.tworks Routin. Attacks Preven.ion.with Blockchain.an. Deep n.ural n.twork

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Computers, Materials & Con.in.a 2022年第3期70卷 6127-6140页

作者： Mohamed Ali Ibrahim A.Abd el-Moghith Mohamed n.el-Derin. Saad M.Darwish Higher In.titute for Tourism Hotels and ComputerAl-SeyoufAlexandria21533Egypt Departmen. of In.ormation.Techn.logy Institute of Graduate Studies and ResearchAlexandria University21526Egypt Departmen. of Computer an. Systems En.in.erin. Faculty of EngineeringAlexandria UniversityAlexandria21544Egypt

Routin. is a key fun.tion.in.ireless Sen.or n.tworks(wSn.)sin.e it facilitates data tran.fer to base *** attacks have the poten.ial to destroy an. degrade the fun.tion.lity ofwSn..A trustworthy routin. system is essen.ial for routin. security an.wSn.*** methods have been.implemen.ed to build trust between.routin. n.des,in.ludin. the use of cryptographic methods an. cen.ralized ***,the majority of routin. techn.ques are un.orkable in.reality due to the difficulty of properly iden.ifyin. un.rusted routin. n.de *** the momen.,there is n. effective way to avoid malicious n.de *** a con.equen.e of these con.ern.,this paper proposes a trusted routin. techn.que that combin.s blockchain.in.rastructure,deep n.ural n.tworks,an. Markov Decision.Processes(MDPs)to improve the security an. efficien.y of wSn.*** authen.icate the tran.mission.process,the suggested methodology makes use of a Proof of Authority(PoA)mechan.sm in.ide the blockchain.*** validation.group required for proofin. is chosen.usin. a deep learn.n. approach that prioritizes each n.de’s *** are then.utilized to determin. the suitable n.xt-hop as a forwardin. n.de capable of securely tran.mittin. *** to testin. data,our routin. system outperforms curren. routin. algorithms in.a 50%malicious n.de routin. scen.rio.

关键词： wireless sen.or n.tworks trusted routin. deep n.ural n.twork blockchain markov decision

Hydrogen.bon.in.: a mechan.sm for tun.n. electron.c an. optical properties of hybrid organ.c–in.rgan.c frameworks

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n.j Computation.l Materials 2016年第1期2卷 19-24页

作者： Fedwa el-Mellouhi el Tayeb Ben.ria Asma Marzouk Sergey n.Rashkeev Sabre Kais Fahhad H Alharbi Qatar En.iron.en.&En.rgy Research In.titute(QEERI) Hamad Bin Khalifa UniversityDohaQatar College of Scien.e an. En.in.erin. Hamad Bin Khalifa UniversityDohaQatar Departmen. of Chemistry an. Physics Birck Nanotechnology CenterPurdue UniversityWest LafayetteINUSA.

The field of hybrid in.rgan.c–organ.c framework materials is on. of the fastest growin. fields in.materials scien.e because their en.rmous structural an. chemical diversity presen.s great opportun.ties for creatin. man. techn.logically relevan. *** of the most importan. issues is con.rollin. an. tun.n. the structural,optical,thermal,mechan.cal an. electron.c properties of these complex materials by varyin. their chemistry,fabrication.techn.ques an. preparation.*** we demon.trate that sign.fican. progress in.this area may be achieved by in.roducin. structural elemen.s that form hydrogen.bon.s with the *** hybrid framework materials with differen. structural orderin. con.ain.n. proton.ted sulfon.um cation.H3S+an. electron.gative halogen.an.on.(I^(−),Br^(−),Cl^(−)an. F^(−)),we foun. that hydrogen.bon.in. in.reases the structural stability of the material an. may be used for tun.n. electron.c states n.ar the *** suggest that such a behaviour has a un.versal character an. should be observed in.hybrid in.rgan.c–organ.c framework materials con.ain.n. proton.ted *** effect may serve as a viable route for optoelectron.c an. photovoltaic application..

关键词： in.rgan.c bon.in. electron.c

Recovery of some valuable elemen.s from lamprophyre dykes in.the Abu Rusheid area, Southeastern.Desert, Egypt

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Chin.se Journ.l Of Geochemistry 2012年第1期31卷 64-73页

作者： Zaki D.I. Shawky n. el-Sheikh E.M. Ahmed F.Y. Ibrahim M.E. n.clear Materials Authority El MaadiP.O.Box 530 CairoEgypt Chemistry Dept. Faculty of Science for GirlAl-Azhar UniversityEgypt

In.the Abu Rusheid area, Southeastern.Desert of Egypt, polymin.ralized (HREEs, U, Zn.an. Pb) lam-prophyre dykes are recen.ly recorded. The lamprophyre dykes cut cataclastic rocks alon. share zon.s in.n.w-SSE tren.s. The secon.ary U-min.rals are essen.ially represen.ed by uran.phan., kasolite, torbern.te an. autun.te. Ex-perimen.al work was carried out on.the lamprophyre dykes for the recovery of uran.um an. other valuable elemen.s (e.g. Zn. Pb an. Al) from 50 kg of techn.logical sample. The optimum con.ition. were: 100 g/L sulfuric acid con.cen.ration. 1:5 S/L (solid/liquid) an. soakin. for 15 days at room temperature. The leachin. efficien.ies for the re-covery of uran.um an. other elemen.s like Al, Zn.an. Pb were 40, 33.6, 98.8 an. 78, respectively.

关键词：有价元素煌斑岩岩脉沙漠埃及价值最佳工艺条件实验工作

Impacts of brood parasitism by shin. cowbird Molothrus bon.rien.is on.the breedin. success of a small host, the black-backed water tyran. Fluvicola albiven.er

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Curren. Zoology 2024年第4期70卷 539-547页

作者： Loren. Van.sa Sovran. Evelin. Jesica Leon.Rodrigo Ezequiel Loren.ón.Pamela Fern.n.a Olguin.Adolfo Héctor Beltzer Alejan.ro Raúl Giraudo Laboratorio de Biodiversidad y Con.ervacion.de Tetrapodos Instituto Nacional de Limnologia(INALICONICET-UNL)Paraje El Pozo s/nSanta Fe(3000)Argentina Departamen.o de Biologia Universidad Autonoma de Entre RiosKm 10.5 RP 11Oro Verde(3100)Entre RiosArgentina Departamen.o de Biologia Universidad Nacional del LitoralFacultad de Humanidades y CienciasParaje Ei Pozo s/nSanta Fe(3000)Argentina

The shin. cowbird Molothrus bon.rien.is parasitizes man. species with differen. life-history traits an. has a detrimen.al effect on.the survival of the progen. of the *** respon.e,hosts have developed n.merous an.iparasitic ***,we examin.d the effects of brood parasitism by shin. cowbird on.the clutch an. brood sizes(83 n.sts)in.a small host,the black-backed water tyran. Fluvicola *** also studied whether the death of parasite n.stlin.s was related to the care of the foster paren.s an. whether the host had an. an.iparasitic defen.e again.t the shin. *** results in.icate that brood parasitism sign.fican.ly decreased the host hatchin. an. fledgin. *** majority of n.st failures(57%)were caused by brood *** cowbird parasitism occurred in.52%of n.sts an. the in.en.ity of parasitism was 1.23±0.53 eggs per parasitized *** the total host eggs,54%were *** the in.ubation.stage,20 n.sts(47%)were aban.on.d because of egg pun.tures by shin. cowbirds *** two parasitic fledglin.s were recorded,while the remain.n. n.stlin.s either died from starvation.n.12)or predation.n.3).Foster paren.s aban.on.d parasitic n.stlin.s between.5 an. 10 days *** fin.in.s demon.trate that the shin. cowbird has very low rates of fledgin. success when.parasitizin. black-backed water ***,parasitism had a high reproductive cost in.the black-backed water tyran. because a very low proportion.7%)of the parasitized n.sts(n.43)were successful.

关键词： brood parasitism host defen.es n.st desertion shin. cowbird small host.

Ton.an.Ediacaran.Tecton.metamorphic History of the Sa'al Complex,Sin.i(Egypt):Implication. for the Tecton.stratigraphic Framework of the n.rthern.Arabian.n.bian.Shield

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Acta Geologica Sin.ca(En.lish Edition. 2022年第5期96卷 1545-1565页

作者： Mohamed w.ALI-BIK Suran.an.GHOSH n.RABHAKAR Said HAbd el RAHIM Hilmy EMOUSSA Geological Scien.es Departmen. National Research Centre(NRC)DokkiCairo 12622Egypt Departmen. of Earth Scien.es Indian Institute of Technology BombayMumbai 400076India

The Sa'al Metamorphic Complex(SMC;southern.Sin.i)en.ompasses the oldest arc rocks in.the Arabian.n.bian.Shield,comprisin. two n.n.con.an.uin.ous metavolcan.c succession.(the Agramiya Group an. the Post-Ra'ayan.Formation.separated by the metasedimen.s of the Ra'ayan.*** experien.ed three distin.t deformation.l even.s(D_(1)–D_(3))an. two low-medium grade region.l metamorphic even.s(M_1–M_(2)).The Agramiya Group an. the Ra'ayan.Formation.experien.ed all tecton.metamorphic even.s(D_1–D_(3)an. M_(1)–M_(2)),whereas the Post-Ra'ayan.volcan.c rocks were on.y affected by the D_(3)an. M_(2)even.s.D_(1)is an.exten.ion.l even. an. is con.ected to the late Rodin.a break-up(~Ton.an.900–870 Ma).The M_(1)metamorphism variably affected the older Agramiya Group,the rhyolitic tuffs experien.in. lower to upper green.chist facies con.ition. an. the basic an. in.ermediate volcan.c rocks un.ergoin. amphibolite facies *** Ra'ayan.Formation.metasedimen.s experien.ed upper green.chist to amphibolite facies *** upper green.chist facies M_(2)affected the youn.est Post-Ra'ayan.volcan.c rocks an. other stratigraphic *** compressive D_(2)an. D_(3)even.s were coeval with the accretion.of dismembered terran.s in.the assembly of Gon.wan..D_(2)can.be lin.ed to the Ton.an.Cryogen.an.arc-arc assembly(~880–760 Ma;in.elat an. Sin.i),whereas D_(3)an. the accompan.in. M_(2)is con.train.d to 622–600 Ma(Ediacaran..

关键词： deformation microstructure metamorphism Sa'al Metamorphic Complex Arabian.n.bian.Shield