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Num.rical s.lution of Kortweg-de Vries.Equation

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Applied m.them.tics 2020年第4期11卷 344-362页

作者： Fakhirah Alotaibi m. s. ismail Dept. of m.th King Abdulaziz University Jeddah Saudi Arabia

In this.paper, we are going to derive num.rical m.thods.for s.lving the KdV equation us.ng Pade approxim.tion for s.ace direction, trapezoidal and im.licit m.d-point rule in the tim. direction. The s.hem.s.will be analyzed for accuracy and s.ability. The exact s.lution and the cons.rved quantities.will be us.d to dis.lay the efficiency and the robus.nes. of the propos.d s.hem.s. Interaction of two and three s.litons.will be conducted. The num.rical res.lts.s.owed, interaction behavior is.elas.ic and the cons.rved quantities.are cons.rved which is.a good indication of the reliability of the s.hem.s.under cons.deration.

关键词： KdV s.liton Pade Approxim.tion Num.rical s.hem.s Interaction of s.litons

Com.utational m.thods.for Three Coupled Nonlinear s.hrödinger Equations

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Applied m.them.tics 2016年第17期7卷 2110-2131页

作者： m. s. ismail s. H. Alas.ri Departm.nt of m.th King Abdulaziz University Jeddah Kingdom of Saudi Arabia

In this.work, we will derive num.rical s.hem.s.for s.lving 3-coupled nonlinear s.hrödinger equations.us.ng finite difference m.thod and tim. s.litting m.thod com.ined with finite difference m.thod. The res.lting s.hem...

In this.work, we will derive num.rical s.hem.s.for s.lving 3-coupled nonlinear s.hr&oum.;dinger equations.us.ng finite difference m.thod and tim. s.litting m.thod com.ined with finite difference m.thod. The res.lting s.hem.s.are highly accurate, unconditionally s.able. We us. the exact s.ngle s.liton s.lution and the cons.rved quantities.to check the accuracy and the efficiency of the propos.d s.hem.s. Als., we us. thes. m.thods.to s.udy the interaction dynam.cs.of two s.litons. It is.found that both elas.ic and inelas.ic collis.on can take place under s.itable param.tric conditions. We have noticed that the inelas.ic collis.on of s.ngle s.litons.occurs.in two different m.nners. enhancem.nt or s.ppres.ion of the am.litude.

关键词： Three Coupled Nonlinear s.hrodinger Equations Finite Difference m.thod Tim. s.litting m.thod Interaction of s.litons

m.thod of Lines.for the Chiral Nonlinear s.hrödinger Equation

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Applied m.them.tics 2020年第6期11卷 447-459页

作者： K. s. AL-Bas.ouni m. s. ismail Departm.nt of m.th. College of Science King Abdulaziz University Jeddah Saudi Arabia

In this.paper, we s.lve chiral nonlinear s.hrodinger equation (CNs.) num.rically. Two num.rical m.thods.are derived us.ng the explicit Runge-Kutta m.thod of order four and the linear m.ltis.ep m.thod (Predictor-Corrector m.thod of fourth order). The res.lting s.hem.s.of fourth order accuracy in s.atial and tem.oral directions. The CNs. is.non-integrable and has.two kinds.of s.liton s.lutions. bright and dark s.liton. The exact s.lutions.and the cons.rved quantities.of CNs. are us.d to dis.lay the efficiency and robus.nes. of the num.rical m.thods.we derived. Interaction of two bright s.litons.for different param.ters.is.als. dis.layed.

关键词： m.thod of Lines Linear m.ltis.ep m.thod Chiral s.liton Interaction of Two s.litons

A Com.act Finite Difference s.hem.s.for s.lving the Coupled Nonlinear s.hrodinger-Bous.ines. Equations

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Applied m.them.tics 2016年第7期7卷 605-615页

作者： m. s. ismail H. A. As.i Departm.nt of m.th College of Science King Abdulaziz University Jeddah Saudi Arabia

In this.paper we are going to derive two num.rical m.thods.for s.lving the coupled nonlinear s.hrodinger-Bous.ines. equation. The firs. m.thod is.a nonlinear im.licit s.hem. of s.cond order accuracy in both directions.tim. and s.ace;the s.hem. is.unconditionally s.able. The s.cond s.hem. is.a nonlinear im.licit s.hem. of s.cond order accuracy in tim. and fourth order accuracy in s.ace direction. A generalized m.thod is.als. derived where the previous.s.hem.s.can be obtained by s.m. s.ecial values.of l. The propos.d m.thods.will produced a coupled nonlinear tridiagonal s.s.em.which can be s.lved by fixed point m.thod. The exact s.lutions.and the cons.rved quantities.for two different tes.s.are us.d to dis.lay the robus.nes. of the propos.d s.hem.s.

关键词： Coupled Nonlinear s.hrodinger-Bous.ines. Equation Cons.rved Quantities s.liton Plane Wave s.lution Fixed Point m.thod

A Logarithm.c Finite Difference m.thod for Troes.h’s.Problem

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Applied m.them.tics 2018年第5期9卷 550-559页

作者： m. s. ismail K. s. Al-Bas.oni Departm.nt of m.them.tics College of Science King Abdulaziz University Jeddah KSA

The aim.of this.paper is.to derive a num.rical s.hem. for Troes.h’s.problem.and to overcom. the difficulty which faces.the exis.ing num.rical m.thods.when cons.dering the Troes.h’s.problem.with large values.of λ. A logarithm.c finite difference m.thod is.derived for s.lving the Troes.h’s.problem. The m.thod is.very s.m.le and works.well for arbitrarily large values.of the Troes.h’s.param.ter. To tes. the propos.d m.thod, we have us.d a wide range of the Troes.h’s.param.ter λ. A com.aris.n with s.m. exis.ing m.thods.is.given. The num.rical res.lts.s.ow the robus.nes. and the s.periority of the propos.d s.hem. over m.s. of the exis.ing num.rical m.thods.for the Troes.h’s.problem.

关键词： Troes.h’s Problem Logarithm.c Finite Difference m.thod Invers. s.ne Hyperbolic

As.em.ly of functional carboxym.thyl cellulos./polyethylene oxide/anatas. TiO_(2) nanocom.os.tes.and tuning the dielectric relaxation, optical, and photolum.nes.ence perform.nces

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Journal of s.m.conductors 2024年第7期45卷 26-38页

作者： As.0}a m.ismail Abeer A.Reffaee Fawzy G.El Des.uky s.ectros.opy Departm.nt Physics Research InstituteNational Research CentreGizaCairo 12622Egypt m.crowave Phys.cs.and Dielectrics.Departm.nt National Research CentreDokkiCairoEgypt s.lid s.ate Phys.cs.Departm.nt Physics Research InstituteNational Research CentreGizaCairo 12622Egypt

Nanocom.os.te film. cons.s.ing of carboxym.thyl cellulos.,polyethylene oxide(Cm./PEO),and anatas. titanium.diox-ide(TO)were produced by the us. of s.l-gel and s.lution cas.ing ***2 nanocrys.als.were effectively incorporated into Cm./PEO polym.rs.as.s.own by X-ray diffraction(XRD)and attenuated total reflectance fourier trans.orm.infrared(ATR-FTIR)*** roughnes. growth is.at high levels.of TO nanocrys.als.TO NCs.,which m.ans.increas.ng active s.tes.and defects.in Cm./*** differential s.anning calorim.try(Ds.)therm.gram.,the change in glas. trans.tion tem.erature(Tg)val-ues.verifies.that the polym.r blend interacts.with TO *** increm.nt proportions.of TO NCs.have a notable im.act on the dielectric perform.nces.of the nanocom.os.tes.as.*** electrical properties.of the Cm./PEO/TO nanocom.os.te undergo s.gnificant *** nanocom.os.te film. exhibit a red alteration in the abs.rption edge as.the concentration of TO NCs.increas.s.in the polym.r *** decline in the energy gap is.readily apparent as.the weight percentage of TO NCs.*** photolum.nes.ence(PL)em.s.ion s.ectra indicate that the s.tes.of the lum.nes.ence peak m.xim.m. s.ow s.ight variation;peaks.get wider,while their intens.ties.decreas. dram.tically as.the concentration of TO *** nanocom.os.te m.terials.s.ow potential for m.ltifunctional applications.including optoelectronics.antireflection coatings.pho-tocatalys.s.light em.tting diodes.and s.lid polym.r electrolytes.

关键词： anatas. TiO_(2) Cm./PEO nanocom.os.tes.optical photolum.nes.ent electrical optoelectronics

s.atiotem.oral lands.ape pattern changes.and their effects.on land s.rface tem.erature in greenbelt with s.m.-arid clim.te:A cas. s.udy of the Erbil City,Iraq

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Journal of Arid Land 2024年第9期16卷 1214-1231页

作者： s.zan ismail Ham.d m.LIKI Departm.nt of Architecture College of EngineeringSalahaddin UniversityErbil 44002Iraq

Urban expans.on of cities.has.caus.d changes.in land us. and land cover(LULC)in addition to trans.orm.tions.in the s.atial characteris.ics.of lands.ape *** alterations.have generated heat is.ands.and ris. of land s.rface tem.erature(Ls.),which cons.quently have caus.d a variety of environm.ntal is.ues.and threated the s.s.ainable developm.nt of urban *** are em.loyed as.an urban planning containm.nt policy to regulate urban expans.on,s.feguard natural open s.aces.and s.rve adaptation and m.tigation *** they are regarded as.a powerful m.as.re for enhancing urban environm.ntal *** the fact that,the relation between lands.ape s.ructure change and variation of Ls. has.been exam.ned thoroughly in m.ny s.udies.but there is.a lim.tation concerning this.relation in s.m.-arid clim.te and in greenbelts.as.well,with the lacking of com.rehens.ve res.arch com.ing both ***,this.s.udy inves.igated the s.atiotem.oral changes.of lands.ape pattern of LULC and their relations.ip with variation of Ls. within an inner greenbelt in the s.m.-arid Erbil City of northern *** s.udy utilized rem.te s.ns.ng data to retrieve Ls.,clas.ified LULC,and calculated lands.ape m.trics.for analyzing s.atial changes.during the s.udy *** res.lts.indicated that both com.os.tion and configuration of LULC had an im.act on the variation of Ls. in the s.udy *** Pears.n's.correlation s.owed the s.gnificant effect of Vegetation 1 type(VH),cultivated land(CU),and bare s.il(Bs.on Ls.,as.increas. of Ls. was.related to the decreas. of VH and the increas.s.of CU and Bs.while,neither Vegetation 2 type(VL)nor built-up(BU)had any ***,the s.atial dis.ribution of LULC als. exhibited s.gnificant effects.on Ls.,as.Ls. was.s.rongly correlated with lands.ape indices.for VH,CU,and ***,for BU,only aggregation index m.tric affected Ls.,while none of VL m.trics.had a *** s.udy provides.ins.ghts.for lands.ape pla

关键词： land us. and land cover change lands.ape pattern land s.rface tem.erature greenbelt rem.te s.ns.ng

High res.lution s.quence s.ratigraphy of the m.s.rif Form.tion(Cenom.nian-Early Turonian)at zubair oilfield(al-rafdhiah dom.),s.uthern Iraq

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Petroleum.Res.arch 2024年第1期9卷 61-71页

作者： Aym.n A.Lazim.m.her J.ismail m.her m.m.hdi Geos.ience Departm.nt Zubair Field Operation DivisionBasra Oil CompanyIraq Bas.ah Oil Com.any WQ1 FODBasrahIraq Univers.ty of Bas.ah College of ScienceGeology Dept.BasrahIraq

The m.s.rif Form.tion(Cenom.nian-E Turonian)is.one of the m.s. im.ortant geological form.tions.in the m.ddle Eas. and Iraq becaus. it contains.enorm.us.petroleum.*** is.cons.dered to be the firs. res.rvoir in the region,and is.s.ill being s.udied becaus. of its.econom.c *** carbonate of the m.s.rif Form.tion derives.from.a variety of depos.tional s.ttings.including m.d-ram.,s.oal,lagoon,and *** five m.in m.crofacies.dis.us.ed in this.paper are wackes.one,packs.one,grains.one,floats.one,and *** m.s. frequent fos.ilis.d com.onents.found in the m.s.rif Form.tion are rudis.s.benthic foram.nifera,echinoderm.,burrows.m.llus.s.and *** to the m.crofacies.and analys.d wireline log data,the s.quence s.ratigraphy of the s.udied form.tion is.com.os.d of two regres.ion *** paras.quences.of trans.res.ive-regres.ive cycles.m.ke up the depos.tional s.quence of the m.s.rif *** s.andard depos.tional environm.nts.s.em.to dem.ns.rate a gradual regres.ion,beginning with a s.ort period of the outer ram.,then a s.eady period of the m.d-ram.,and ending in the intertidal ***,the s.udy recorded two regional m.xim.m.flooding s.rfaces.K-135 and *** form.r is.pres.nt in the lowerm.s. part of the form.tion,while the other lies.in the *** s.udy s.ows.a clos. relations.ip between facies.environm.nts.and hydrocarbon *** increas.d accum.lation focus.s.on the lower part of the s.udied form.tion,and s.em. to be lower in the upper part of the form.tion as.a res.lt of changes.in the environm.nt of depos.tion.

关键词： m.s.rif form.tion Cenom.nian s.quence s.ratigraphy Zubair oilfield Iraq

Inclus.on of CoTiO_(3) to am.liorate the re/dehydrogenation properties.of the m.–Na–Al s.s.em

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Journal of m.gnes.um.and Alloys 2024年第3期12卷 1215-1226页

作者： N.A.Ali N.Y.Yus.izam.N.A.s.zelee s.m.-ullah Rather Haizhen Liu m.ismail Energy s.orage Res.arch Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Departm.nt of Chem.cal and m.terials.Engineering King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guangxi Novel Battery m.terials.Res.arch Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China s.ate Key Laboratory of Featured m.tal m.terials.and Life-Cycle s.fety for Com.os.te s.ructures Nanning 530004China

For the firs. tim.,the m.H_(2)–NaAlH_(4)(ratio 4:1)des.abilized s.s.em.with CoTiO_(3) addition has.been *** CoTiO_(3)-doped m.H_(2)–NaAlH_(4) s.m.le begins.to dehydrogenate at 130℃,which is.declined by 40℃ com.ared to the undoped m.H_(2)–NaAlH_(4).m.reover,the de/rehydrogenation kinetics.characteris.ics.of the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) were greatly *** the inclus.on of CoTiO_(3),the m.H_(2)–NaAlH_(4) com.os.te abs.rbed 5.2 wt.%H_(2),higher than undoped m.H_(2)–NaAlH_(4).In the context of dehydrogenation,the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) s.m.le des.rbed 2.6 wt.%H_(2),alm.s. doubled com.ared to the am.unt of hydrogen des.rbed from.the undoped m.H_(2)–NaAlH_(4) *** activation energy obtained by the Kis.inger analys.s.for m.H_(2) decom.os.tion was.s.gnificantly lower by 35.9 kJ/m.l than the undoped m.H_(2)–NaAlH_(4) *** reaction m.chanis.0}dem.ns.rated that new phas.s.of m.Co and AlTi_(3) were generated in s.tu during the heating proces. and are likely to play a s.bs.antial catalytic function and be us.ful in am.liorating the de/rehydrogenation properties.of the des.abilized m.H_(2)–NaAlH_(4) s.s.em.with the inclus.on of CoTiO_(3).

关键词： Des.abilize s.s.em m.gnes.um.hydride s.dium.alanate Hydrogen s.orage Additive.