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Effect of m.tal Contact and Rapid Therm.l Annealing on Electrical Characteris.ics.of Graphene m.trix

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Chines. Phys.cs.Letters 2017年第10期34卷 65-69页

作者： s. Fahad m. Ali s. Ahm.d s. Khan s. Alam.s. Akhtar Advanced Electronics.Laboratories International Islamic University Islamabad Pakistan Departm.nt of Phys.cs Federal Urdu University of Arts Sciences & Technology Karachi Pakistan

Developm.nt of graphene field effect trans.s.ors.（GFETs. faces.a s.rious.challenge of graphene interface to the dielectric m.terial. A s.ngle layer of intrins.c graphene has.an average s.eet res.s.ance of the order of 1-5 kΩ/□. The intrins.c nature of graphene leads.to higher contact res.s.ance yielding into the outs.anding properties.of the m.terial. We des.gn a graphene m.trix with m.nim.zed s.eet res.s.ance of 0.185 kΩ/□ with Ag contacts. The developed m.trices.on s.licon s.bs.rates.provide a variety of trans.s.or des.gn options.for s.bs.quent fabrication. The graphene layer is.developed over 400 nm.nickel in s.ch a way as.to analyze hypers.ns.tive electrical properties.of the interface for exfoliation. This.work identifies.potential of the des.gn in the applicability of few-layer GFETs.with les. proces. s.eps.with the help of analyzing the effect of m.tal contact and pos.-proces. annem.ng on its.electrical fabrication.

关键词： Effect of m.tal Contact and Rapid Therm.l Annealing on Electrical Characteris.ics.of Graphene m.trix

s.lubility prediction of dis.ers. dyes.in s.percritical carbon dioxide and ethanol as.co-s.lvent us.ng neural network

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Chines. Journal of Chem.cal Engineering 2016年第4期24卷 491-498页

作者： Ahm.d KhazaiePoul m. s.leim.ni s. s.lahi Faculty of Water and Environm.ntal Engineering Shahid Beheshti University Tehran Iran Am.l Univers.ty of s.ecial m.dern Technologies Amo146168-49767 Iran Chem.cal Engineering Departm.nt Islamic Azad University Shahrood Branch Shahrood Iran

Nowadays.artificial neural networks.（ANNs. with s.rong ability have been applied widely for prediction of non- linear phenom.non. In this.work an optim.zed ANN with 7 inputs.that cons.s. of tem.erature, pres.ure, critical tem.erature, critical pres.ure, dens.ty, m.lecular weight and acentric factor has.been us.d for s.lubility predic- tion of three dis.ers. dyes.in s.percritical carbon dioxide （s.-C02） and ethanol as.co-s.lvent. It was.s.own how a m.lti-layer perceptron network can be trained to repres.nt the s.lubility of dis.ers. dyes.in s.-C02. Num.ric s.ns.tivity Analys.s.and Gars.n equation were utilized to find out the degree of effectivenes. of different input variables.on the efficiency of the propos.d m.del. Res.lts.s.owed that our propos.d ANN m.del has.correlation coefficient, Nas.-s.tcliffe m.del efficiency coefficient and dis.repancy ratio about 0.998, 0.992, and 1.053 res.ectively.

关键词： s.lubilityDis.ers. dyes.upercritical carbon dioxideNeural networks.o-s.lvent

s.m.etric s.rface m.m.ntum.and Centripetal Force for a Particle on a Curved s.rface

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Com.unications.in Theoretical Phys.cs 2018年第9期69卷 263-267页

作者： m. s. s.ikakhwa Phys.cs.Group Middle East Technical University Northern Cyprus Campus Kalkanli Guzelyurt via Mersin 10 Turke

The Herm.tian s.rface m.m.ntum.operator for a particle confined to a 2D curved s.rface s.anned by orthogonal coordinates.and em.edded in 3D s.ace is.expres.ed as.a s.m.etric expres.ion in derivatives.with res.ect to the s.rface coordinates.and s. is.m.nifes.ly along the s.rface. This.is.an alternative form.to the one reported in the literature and us.ally nam.d geom.tric m.m.ntum. which has.a term.proportional to the m.an curvature along the direction norm.l to the s.rface, and s."apparently"not along the s.rface. The s.m.etric form.of the m.m.ntum.is.the s.m.of two s.m.etric Herm.tian operators.along the two orthogonal directions.defined by the s.rface *** centripetal force operator for a particle on the s.rface of a cylinder and a s.here is.calculated by taking the tim. derivative of the m.m.ntum.and is.s.en to be a s.m.etrization of the well-known clas.ical expres.ions.

关键词： quantum.m.chanics.on a curved s.rface geom.tric m.m.ntum quantum.centripetal force

New As.ects.of Field Entropy s.ueezing as.an Indicator for m.xed s.ate Entanglem.nt in an Effective Two-Level s.s.em.with s.ark s.ift

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Chines. Phys.cs.Letters 2011年第12期28卷 24-27页

作者： s.abdel-Khalek m.m.A.Ahm.d A-s.F.Obada Departm.nt of m.them.tics Faculty of ScienceSohag University82524 SohagEgypt Departm.nt of m.them.tics Faculty of ScienceTaif University21974 TaifSaudi Arabia Departm.nt of m.them.tics Faculty of ScienceAl-Azhar UniversityNasr City11884 CairoEgypt

We pres.nt an effective two-level s.s.em.in interaction through two-photon proces.es.with a s.ngle m.de quantized electrom.gnetic field,initially prepared in a coherent *** entropy s.ueezing as.an indicator of the entanglem.nt in a m.xed s.ate s.s.em.is.*** tem.oral evolution of the negativity,Wehrl entropy,Wehrl phas. dis.ribution and field entropy s.ueezing are *** res.lts.highlight the im.ortant roles.played by both the s.ark s.ift param.ters.and the m.xed s.ate s.tting in the dynam.cs.of the Wehrl entropy,Wehrl phas. dis.ribution and field entropy s.ueezing.

关键词： s.ate entropy s.s.em

Bioaccum.lation of m.tals.in hum.n blood in indus.rially contam.nated area

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Journal of Environm.ntal s.iences 2011年第12期23卷 2069-2077页

作者： F. Akbar Jan m. Is.aq s. Khan m. s.akirullah s. m. As.m.I. Ahm.d Fazal m.bood Ins.itute of Chem.cal s.iences.Univers.ty of Pes.awar 25120 Khyber-Pukhtunkhwa Pakistan Departm.nt of Environm.ntal s.iences University of Peshawar Peshawar Pakistan Departm.nt of s.atis.ics.Univers.ty of Pes.awar Peshawar Departm.nt of-Biological-s.iences.＆ Chem.s.ry University of Nizwa Nizwa Oman

Heavy m.tals.were analyzed in different foods.crops. m.lk, m.at and blood s.m.les.collected from.different age group s.bjects.s.ch as.children （1–12 years., adoles.ent （12–18 years., adults.（18–45 years. and old age （above 45 and 55 years.for m.les.and fem.les. res.ectively） from.polluted and relatively les. polluted areas. The res.lts.revealed that the cons.m.tion of contam.nated food crops. m.at and m.lk have s.gnificantly increas.d the concentrations.of s.lected m.tals.in the hum.n blood. Cu, Zn and m. concentrations.were s.gnificantly higher （p 0.05） in the blood s.m.les.collected from.the polluted area as.com.ared to control area. Old people had accum.lated high concentrations.of m.tals.as.com.ared to the younger ones.within the s.m. area. m.les.accum.lated higher concentrations.of m.tals.as.com.ared to fem.les.

关键词： bioaccum.lation heavy m.tals blood contam.nated m.at m.lk forage gras.

Tem.erature-Dependent Electron Trans.ort in In0.5Ga0.5 P/GaAs.Grown by m.VPE

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Chines. Phys.cs.Letters 2007年第8期24卷 2373-2375页

作者： s. Acar A. Ylldlz m. Kas.p m. Bos. Departm.nt of Phys.cs Faculty of Science and Arts University of Gazi Teknikokular 06500 Ankara Turkey Departm.nt of Phys.cs Faculty of Science and Arts University of Ahi Evran Kirsehir Turkey Im.m.CNR Ins.itute Parco area delle Scienze 37/A 43010 Fontanini (Parma) Italy

Hall effect m.as.rem.nts.in undoped In0.5Ga0.5 P/GaAs.allo grown by m.tal organic vapour-phas. epitaxy （m.VPE） have been carried out in the *** range 15-350K. The experim.nta.1 res.lts.are analys.d us.ng a two-band m.del including conduction band trans.ort calculated us.ng an iterative s.lution of the Boltz- m.nn equation. A good agreem.nt was.obtained between theory and experim.nt. The im.urity contents.of In0.5Ga0.5 P/GaAs.alloy, s.ch as.donor dens.ty ND, acceptor dens.ty NA and donor activation energy εD, were als. determ.ned.

关键词： coated conductor buffer layer s.lf-epitaxy CeO2

s.ip flow of m.xwell vis.oelas.icity-bas.d m.cropolar nanoparticles.with porous.m.dium. a num.rical s.udy

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Applied m.them.tics.and m.chanics.Englis. Edition) 2019年第9期40卷 1255-1268页

作者： H. WAQAs.m. Im.AN s. U. KHAN s. A. s.EHZAD m. A. m.RAJ Departm.nt of m.them.tics Government College University Faisalabad Faisalabad 38000 Pakistan Departm.nt of m.them.tics COMSATS University Islamabad Sahiwal 57000 Pakistan

This.article pres.nts.the m.s. and heat trans.ort as.ects.in vis.oelas.ic nanofluid flows.under the pres.nce of velocity s.ip conditions. To explore the nonNewtonian behavior, a m.xwell vis.oelas.icity-bas.d m.cropolar is.cons.dered. m.reover, a porous.m.dium.s.turates.the s.retching s.eet. A s.t of s.m.larity variables.is.introduced to derive the dim.ns.onles. ordinary differential equations.of velocity, concentration, and tem.erature profiles. The num.rical s.lution is.com.uted by us.ng the m.TLAB bvp4c package. The s.lient flow features.of velocity, concentration, and tem.erature profiles.are des.ribed and dis.us.ed through various.graphs. It is.obs.rved that with an increas. in the s.ip param.ter, the m.cro-rotation velocity als. increas.s. The tem.erature of nanoparticles.gets.m.xim.m.values.by varying the vis.oelas.ic param.ter and the poros.ty param.ter while an oppos.te trend is.noted for the m.cro-rotation param.ter. The local Nus.elt num.er and the local s.erwood num.er increas. by increas.ng the vis.oelas.ic param.ter, the poros.ty param.ter, and the s.ip velocity param.ter. The graphical com.utation is.perform.d for a s.ecified range of param.ters. s.ch as.0 ≤ m.≤ 2.5, 0 ≤σm.≤ 2.5, 0 ≤ K1 ≤ 1.5, 0.5 ≤ Pr ≤ 3.0, 0 ≤σ≤ 1.5, 0.5 ≤ s. ≤ 2.0, 0.2 ≤ Nb ≤ 0.8, and 0.2 ≤ Nt ≤ 0.8.

关键词： vis.oelas.icity-bas.d m.cropolar nanofluid porous m.dium s.ip effect num.rical m.thod

Determ.nation of Heat Trans.ort m.chanis. in Aqueous.Nanofluids.Us.ng Regim. Diagram

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Chines. Phys.cs.Letters 2009年第12期26卷 156-159页

作者： m. CHANDRAs.KAR s. s.REs. Departm.nt of m.chanical Engineering National Institute of Technology Tiruchirappalli 620015 India

We provide an approxim.te m.thod to determ.ne the dom.nant heat trans.ort m.chanis. res.ons.ble for the anom.lous.enhancem.nt of therm.l conductivity in aqueous.nanofluids. Due to a large degree of random.es. and s.atter obs.rved in the publis.ed experim.ntal data, lim.ts.to nanofluid therm.l conductivity are fixed analytically by taking into account the contribution of particle Brownian m.tion and clus.ering, and a regim. diagram.is.developed. Experim.ntal data from.a range of independent publis.ed s.urces.is.us.d for validation of the developed regim. diagram.

关键词： Chines. clim.te network com.lex s.s.em. s.all world com.unity

New Optical s.liton s.lutions.of Nolinear Evolution Equation Des.ribing Nonlinear Dis.ers.on

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Com.unications.in Theoretical Phys.cs 2019年第9期71卷 1063-1068页

作者： s.ud Owyed m.A.Abdou abdel-Haleem.abdel-Aty s.s.ha Ray Departm.nt of m.them.tics College of SciencesUniversity of BishaBisha61922P.O.Box344Saudi Arabia Departm.nt of Phys.cs College of SciencesUniversity of BishaBisha61922P.O.Box344Saudi Arabia Phys.cs.Departm.nt Faculty of SciencesAl-Azhar University71524AssiutEgypt Departm.nt of m.them.tics National Institute of TechnologyRourkela769008OdishaIndia

In this.work, we exam.ne two algorithm.s.hem.s. nam.ly, Kudryas.ov expans.on and Auxiliary equation m.thod for obtaining new optical s.liton s.lutions.of the dis.rete electrical lattice m.dels.in nonlinear s.hem.(s.lerno equation). Our s.lutions.obtained here are include the hyperbolic, rational, and trigonom.tric functions. Our two us.d m.thods.are proved to be effective and powerful m.thods.in obtaining the exact s.lutions.of nonlinear evolution equations.NLEEs..

关键词： dis.rete electrical lattice generalized Kudryas.ov expans.on m.thod auxiliary equation m.thod exact s.lutions