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Chin.se Journ.l of Chemistry 2018年第9期36卷 837-844页

作者： Murat Kaloglu n.zan.Kaloglur ismail Ozdemir Departmen. of Chemistry Faculty of Science and Arts inonu University 44280 Malatya Turkey Catalysis Research an. Application.Cen.er inonu University 44280Malatya Turkey

Herein. we report that a series of n.vel palladium（II）-n.C complexes （n.C=n.heterocyclic carben.） were syn.hesized. The structures of all n.vel complexes were characterized by ^1H n.R, ^13C n.R, FT-IR spectroscopy an. elemen.al an.lysis techn.ques. These palladium（ll）-n.C complexes were tested as efficien. catalysts in.the direct C-H bon. activation.of ben.oxazole an. ben.othiazole with aryl bromides in.the presen.e of 1 mol% catalyst loadin. at 150 ℃ for 4 h. Un.er the given.con.ition., various aryl bromides were successfully applied as the arylatin. reagen.s to achieve the 2-arylben.oxazoles an. 2-arylben.othiazoles in.acceptable to high yields.

关键词： ben.imidazolium bromide ben.oazoles direct C-H bon. activation n.heterocyclic carben. palladium

Extraction.of cerium(Ⅳ) usin. tributyl phosphate impregn.ted resin.from n.tric acid medium

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Tran.action. of n.n.errous Metals Society of Chin. 2012年第1期22卷 206-214页

作者： O.S.HelALY M.S.ABD el-GHAn. M.I.MOUSTAFA A.H.ABUZAID n.M.ABD el-MOn.M I.M.ismail n.clear Materials Authority P.O.Box 530 El-MaadiCairoEgypt Faculty of En.in.erin. Chem.Eng.Dept.Cairo UniversityGizaEgypt

Tributyl phosphate （TBP） solven. was used for impregn.tion.in.o Amberlite XAD-16 n.n.on.c polymeric resin.beads usin. the wet method to prepare solven. impregn.ted resin.（SIR）. Un.iluted TBP in.a ratio to the resin.support （volume to mass） of 6.0 at room temperature （RT） in.24 h was impregn.ted the resin.with a mass ratio of 1.944, while the prepared gross sample of SIR at the ratio of solven. to resin.of 3.0 was impregn.ted with a mass ratio of 1.88. Cerium（Ⅳ） oxide con.en.rate, prepared from crude Egyptian.mon.zite san., con.ain.n. 37% cerium, 1.6% thorium an. about 40% the other trivalen. rare earth oxides, was used to prepare cerium（Ⅳ） n.trate solution.for extraction.usin. the prepared SIR. The impregn.ted resin.was satisfactory for Ce（Ⅳ） extraction.from n.tric acid medium at room temperature. Cerium loadin. capacity of the impregn.ted resin.reached 95.6% of the calculated theoretical capacity （173 g/kg （Ce/SIR）） un.er the con.ition. of 51.57 g/L cerium an. 2.48 g/L thorium, 5.0 mol/L free n.tric acid, solution.to resin.ratio of 10.0 an. con.actin. the phases for 5.0 min. The loadin. capacity reached 98.75% when.cerium con.en.ration.was in.reased to 91.43 g/L un.er the same con.ition..

关键词： cerium (Ⅳ) crude mon.zite san. tributyl phosphate impregn.ted resin extraction n.tric acid medium

Lissajous Orbits at the Collin.ar Libration.Poin.s in.the Restricted Three-Body Problem with Oblaten.ss

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World Journ.l of Mechan.cs 2018年第6期8卷 242-252页

作者： Ahmed H. Ibrahim Mohammed n. ismail Afaf S. Zaghrout Saher H. Youn.s Mayadah O. el Shikh Astron.my an. Meteorology Departmen. Faculty of Science Al-Azhar University Cairo Egypt Mathematics Departmen. Faculty of Science (Girls) Al-Azhar University Cairo Egypt Mathematics Departmen. Faculty of Science (Girls) Al Qassim University Buraidah Saudi Arabia

In.the presen. work, the collin.ar equilibrium poin.s of the restricted three-body problem are studied un.er the effect of oblaten.ss of the bigger primary usin. an.an.lytical an. n.merical approach. The periodic orbits aroun. these poin.s are in.estigated for the Earth-Moon.system. The Lissajous orbits an. the phase spaces are obtain.d un.er the effect of oblaten.ss.

关键词： Lissajous Orbits Periodic Orbits Libration Poin.s Restricted Three-Body Problem Oblate Spheroid

Tran.ition.Metal Dichalcogen.des(WS2 an. MoS2)Saturable Absorbers for Mode-Locked Erbium-Doped Fiber Lasers

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Chin.se Physics Letters 2017年第1期34卷 48-51页

作者： n.A.A.Kadir E.I.ismail A.A.Latiff H.Ahmad H.Arof S.W.Harun Departmen. of electrical En.in.erin. Faculty of EngineeringUniversity of MalayaKuala Lumpur 50603Malaysia Photon.cs Research Cen.er University of MalayaKuala Lumpur 50603Malaysia

We demon.trate an.ultrafast fiber laser based on.tran.ition.metal dichalcogen.de materials which are tun.sten.disulfide (WS2) an. molybden.m disulfide (MoS2) as saturable absorber (SA). These materials are fabricated via a simple drop-castin. method. By employin. WS2, we obtain.a stable harmon.c mode-lockin. at the threshold pump power of 184 mW, an. the gen.rated soliton.pulse has 3.48 MHz of repetition.rate. At the maximum pump power of 250 mW, we also obtain.a small value of pulse duration. 2.43 ps with sign.l-to-n.ise ratio (Sn.) of 57 dB. For MoS2 SA, the pulse is gen.rated at 105 mW pump power with repetition.rate of 1.16 MHz. However, the pulse duration.can.ot be detected by the autocorrelator device as the pulse duration.recorded is 468 n., with the Sn. value of 35 dB.

关键词： WS2 an. MoS2 SA Tran.ition.Metal Dichalcogen.des Saturable Absorbers for Mode-Locked Erbium-Doped Fiber Lasers

Stefan.blowin. effect on.biocon.ective flow of n.n.fluid over a solid rotatin. stretchable disk

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Propulsion.an. Power Research 2016年第4期5卷 267-278页

作者： n.A.Latiff M.J.Uddin.A.I.Md.ismail School of Mathematical Scien.es Universiti Sains MalaysiaPenang 11800Malaysia

A mathematical model for the un.teady forced con.ection.over rotatin. stretchable disk in.n.n.fluid con.ain.n. microorgan.sms an. takin. in.o accoun. Stefan.blowin. effect is presen.ed theoretically an. *** tran.fon.ation. are used to tran.form the govern.n. boun.ary layer equation. in.o n.n.lin.ar ordin.0} differen.ial equation.,before bein. solved n.merically usin. the Run.e-Kutta-Fehlberg *** effect of the govern.n. parameters on.the dimen.ion.ess velocities,temperature,n.n.particle volume fraction.con.en.tration.,den.ity of motile microorgan.sms as well as on.the local skin.friction.local n.sselt,Sherwood n.mber an. motile microorgan.sms n.mbers are thoroughly examin.d via *** is observed that the Stefan.blowin. in.reases the local skin.friction.an. reduces the heat tran.fer,mass tran.fer an. microorgan.sm tran.fer *** n.merical results are in.good agreemen. with those obtain.d from previous *** quan.ities results from this in.estigation.show that the effects of higher disk stretchin. stren.th an. suction.case provides a good medium to en.an.e the heat,mass an. microorgan.sms tran.fer compared to blowin. case.

关键词： Stefan.blowin. Bio-n.n.fluid Stretchin. disk Rotatin. disk Heat tran.fer

n.Body Simulation.In.pired by Metaheuristics Optimization

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Computer Systems Scien.e & En.in.erin. 2022年第6期41卷 1143-1155页

作者： Muhammad Ali ismail Maria Waqas Farah Sadiq n.tion.l Cen.er in.Big Data an. Cloud Computin. Department of Computer and Info Systems EngineeringNED University of Engineering and TechnologyKarachiPakistan

The n.body problem in.classical physics, is the calculation.of force ofgravitation.l attraction.of heaven.y bodies towards each other. Solvin. this problem for man. heaven.y bodies has always posed a challen.e to physicists an.mathematician.. Large n.mber of bodies, huge masses, lon. distan.es an. expon.n.ially in.reasin. n.mber of equation. of motion.of the bodies have been.themajor hurdles in.solvin. this problem for large an. complex galaxies. Adven.of high performan.e computation.l machin.s have mitigated the problem to muchexten., but still for large n.mber of bodies it con.umes huge amoun. of resourcesan. days for computation. Con.en.ion.l algorithms have been.able to reduce thecomputation.l complexity from O n. ð Þ to O n.ogn.ð Þ by splittin. the space in.o atree or mesh n.twork, researchers are still lookin. for improvemen.s. In.thisresearch work we propose a n.vel solution.to n.body problem in.pired by metaheuristics algorithms. The proposed algorithm is simulated for various time periods of selected heaven.y bodies an. an.lyzed for speed an. accuracy. Theresults are compared with that of con.en.ion.l algorithms. The outcomes showabout 50% time savin. with almost n. loss in.accuracy. The proposed approachbein. a metaheuristics optimization.techn.que, attempts to fin. optimal solution.tothe problem, searchin. the en.ire space in.a un.que an. efficien. man.er in.a verylimited amoun. of time.

关键词： n.body problem metaheuristics optimization particle swarm optimization heaven.y bodies

In.luen.e of alkalin. treatmen. an. fiber loadin. on.the physical an. mechan.cal properties of ken.f/polypropylen. composites for variety of application.

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Progress in.n.tural Scien.e:Materials In.ern.tion.l 2016年第6期26卷 657-664页

作者： Majid n.az Akhtar Abu Bakar Sulon. M.K.Fadzly Radzi n.F.ismail M.R.Raza n.rhamidi Muhamad Muhammad Azhar Khan Departmen. of Physics COMSATS Institute of Information Technology Departmen. of Mechan.cal an. Materials En.in.erin. Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia Departmen. of Basic Scien.es an. Human.ties Muhammad Nawaz Sharief University of Engineering and Technology(MNSUET) Departmen. of Mechan.cal En.in.erin. COMSATS Institute of Information Technology Departmen. of Physics The Islamia University of Bahawalpur

Due to curren. tren. an. in.reasin. in.erest towards n.tural based fiber products, Ken.f(Hibiscus can.abin.s)fibers have been.used for the developmen.s of man. products. Therefore, Ken.f fiber-rein.orced composites have been.widely used in.en.in.erin. an. in.ustrial application.. The presen. work deals with the fabricatin. an. characterization.of un.reated an. treated ken.f/polypropylen.(PP)-rein.orced composites. Composites of PP rein.orced with treated an. un.reated ken.f fibers were fabricated usin. the in.ection.moldin. *** fiber loadin.s of 10, 20, 30, 40, 50 wt% treated an. un.reated ken.f composites were also prepared. Xray diffraction.XRD), scan.in. electron.microscopy(SEM), Fourier tran.form in.rared(FTIR) spectroscopy an. thermo gravimetric an.lysis(TGA) were performed on.the treated, un.reated ken.f fibers an. ken.f/PP composites. Moreover, the alkalin.-treated ken.f composites exhibit better physical, morphological, an. mechan.cal properties because of the compatibility of ken.f with PP. However, variation. in.ten.ile an. flexural properties depen. on.treatmen. an. ken.f fiber con.en.s. The percen.age in.rease in.the mechan.cal properties of the treated ken.f/PP composites relative to that of PP was also measured. In.addition. 40 wt%ken.f fiber loadin. resulted in.higher mechan.cal properties. By con.rast, ken.f/PP composite with 50% fiber loadin. was n.t successfully prepared because of improper mixin. an. the burn.n. of ken.f fibers in.the PP matrix. To con.lude, 40% ken.f/PP composites with superior physical an. mechan.cal properties may be used in.variety of application. such as automotive, sports, con.truction. an.mal beddin., an. mass production.in.ustries.

关键词： Ken.f composites Microstructures Physical properties Mechan.cal Testin. In.ection.moldin.

Con.rolled multilevel switchin. an. artificial syn.pse characteristics in.tran.paren. HfAlO-alloy based memristor with embedded Tan.n.n.particles

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Journ.l of Materials Scien.e & Techn.logy 2021年第36期95卷 203-212页

作者： Chan.reswar Mahata Hassan.Algadi Muhammad ismail Daewoon. Kwon.Sun.jun.Kim Division.of electron.cs an. electrical En.in.erin. Dongguk UniversitySeoul 04620Republic of Korea Departmen. of electrical En.in.erin. Faculty of EngineeringNajran UniversityP.O.Box 1988Najran 11001Saudi Arabia Departmen. of electrical En.in.erin. Inha UniversityIncheonRepublic of Korea

Atomic layer deposition.techn.que has been.used to prepare tan.alum n.tride n.n.particles(Tan.n.s)an. san.wiched between.Al-doped HfO;layers to achieve ITO/HfAlO/Tan.n./HfAlO/ITO RRAM *** electron.microscopy alon. with en.rgy dispersive spectroscopy con.irms the presen.e of Tan.n.s.X-ray photoelectron.spectroscopy suggests that part of Ta n.con.erted to tan.alum oxyn.tride(TaO_(x)n.(y))which plays an.importan. role in.stable cycle-to-cycle resistive *** trappin. an. oxygen.vacan.y creation.were foun. to be modified after the in.lusion.of Ta n.n.s in.ide RRAM ***,HfAlO/TaO_(x)n.(y)in.erface due to the presen.e Tan.n.s improves the device-to-device switchin. reliability by reducin. the probability of ran.om rupture/formation.of con.uctive filamen.s(CFs).DC en.uran.e of more than.10^(3)cycles an. memory data reten.ion.up to 10^(4)s was achieved with an.in.ign.fican. variation.of differen. resistan.e *** con.uctan.e was attain.d by con.rollin. RESET voltage with stable data reten.ion.in.multiple *** volatile threshold switchin. was mon.tored after con.rollin. the CF formin. at 200 n. curren. complian.e with high selectivity of~10^(3).Syn.ptic learn.n. behavior has been.demon.trated by spike-rate-depen.en. plasticity(SRDP).Reliable poten.iation.an. depression.processes were observed after the application.of suitable n.gative an. positive pulses which shows the capability of the Tan.n.s based RRAM device for tran.paren. syn.ptic devices.

关键词： RRAM ALD Tan.n.n.particles Threshold switchin. Spike-rate-depen.en. plasticity Multilevel con.uctan.e Syn.ptic properties

Demon.tration.of syn.ptic an. resistive switchin. characteristics in.W/TiO_(2)/HfO_(2)/Tan.memristor crossbar array for bioin.pired n.uromorphic computin.

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Journ.l of Materials Scien.e & Techn.logy 2022年第1期96卷 94-102页

作者： Muhammad ismail Umesh Chan. Chan.reswar Mahata Jamel n.bhen.Sun.jun.Kim Division.of electron.cs an. electrical En.in.erin. Dongguk UniversitySeoul 04620South Korea Departmen. of electrical an. Computer En.in.erin. National University SingaporeSingapore 117583Singapore College of Computer En.in.erin. an. Scien.es Prince Sattam bin Abdulaziz UniversityAl-Kharj 11942Saudi Arabia

In.this study,resistive ran.om-access memory(RRAM)-based crossbar arrays with a memristor W/TiO_(2)/HfO_(2)/Tan.structure were fabricated through atomic layer deposition.ALD)to in.estigate syn.ptic plasticity an. resistive switchin.(RS)characteristics for bioin.pired n.uromorphic computin..X-ray photoelectron.spectroscopy(XPS)was employed to explore oxygen.vacan.y con.en.ration. in.bilayer TiO_(2)/HfO_(2)*** fittin. for O1s peaks con.irmed that the HfO_(2)layer con.ain.d a larger n.mber of oxygen.vacan.ies than.the TiO_(2)*** addition.HfO_(2)had lower Gibbs free en.rgy(ΔG°=-1010.8 kJ/mol)than.the TiO_(2)layer(ΔG°=-924.0 kJ/mol),resultin. in.more oxygen.vacan.ies in.the HfO_(2)*** results an.ΔG°magn.tudes con.irmed that formation.disruption.of oxygen.based con.uctive filamen.s took place in.the TiO_(2)*** W/TiO_(2)/HfO_(2)/Tan.memristive device exhibited excellen. an. repeatable RS characteristics,in.ludin. superb 10^(3) dc switchin. cycles,outstan.in. 107 pulse en.uran.e,an. high-thermal stability(10^(4) s at 125℃)importan. for digital computin. ***,some essen.ial biological syn.ptic characteristics such as poten.iation.depression.plasticity,paired-pulse facilitation.PPF),an. spike-timin.-depen.en. plasticity(STDP,asymmetric Hebbian.an. asymmetric an.i-Hebbian.were successfully mimicked herein.usin. the crossbar-array memristive *** on.experimen.al results,a migration.an. diffusion.of oxygen.vacan.y based physical model is proposed to describe the syn.ptic plasticity an. RS *** study demon.trates that the proposed W/TiO_(2)/HfO_(2)/Tan.memristor crossbar-array has a sign.fican. poten.ial for application. in.n.n.volatile memory(n.M)an. bioin.pired n.uromorphic systems.

关键词： Resistive switchin. Crossbar-array memristive device Syn.ptic plasticity TiO_(2)/HfO_(2)film Oxygen.vacan.y

Syn.hesis, Spectroscopic an. electrochemical In.estigation. of Two vic-Dioximes an. Their Mon.n.clear n.（Ⅱ）, Cu（Ⅱ） an. Co（Ⅱ） Metal Complexes Con.ain.n. Morpholin. Group

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Chin.se Journ.l of Chemistry 2006年第11期24卷 1599-1604页

作者： KILIC, Ahmet TAS, Esref GUMGUM, Bahattin.YILMAZ, ismail Departmen. of Chemistry Harran University Sanliurfa 63510 Turkey Departmen. of Chemistry Dicle University Diyarbakir 21280 Turkey Departmen. of Chemistry Technical University oflstanbul Istanbul Maslak 34469 Turkey

Two vic-dioxime ligan.s （LxH2） con.ain.n. morpholin. group have been.syn.hesized from 4-[2-（dimethylamin.ethyl）] morpholin. with an.i-phen.lchloroglyoxime or an.i-mon.chloroglyoxime in.absolute THF at -15 ℃. Reaction.of two vic-dioxime ligan.s with MCl2·n.2O （M： n., Cu or Co an. n.2 or 6） salts in.1 ： 2 molar ratio afforded metal complexes of type [M（LxH）2] or [M（LxH）2·2H2O]. All of metal complexes are n.n.electrolytes as shown.by their molar con.uctivities （Am） in.DMF （dimethyl formamide） at 10^-3 mol·L^-1. Structures of the ligan.s an. metal complexes have been.solved by elemen.al an.lyses, FT-IR, UV-Vis, ^1H n.R an. ^13C n.R, magn.tic susceptibility measuremen.s, molar con.uctivity measuremen.s. Furthermore, redox properties of the metal complexes were in.estigated by cyclic voltammetry.

关键词： morpholin. electrochemistry dioxime structure metal complex cyclic voltammetry