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a.plied Ma.hema.ics 2011年第7期2卷 801-807页

作者： yehia a. abdel-aziz a.a. M. abdel-Ha.eed Kha.il I. Kha.il 不详

In this pa.er, we developed a.new a.proa.h of a. a.a.ytica. model to ca.cula.e the ra.ia. a.d tra.sversa. components of the a.celera.ion due to the effects of Ea.th’s a.bedo. Its effects on the orbita. motion of a. a.tificia. sa.ellite a.e introduced. It is a.sumed tha. the sa.ellite’s horizon is illumina.ed a.d the sun lies on the equa.or. The ma.nitudes of those components a.e obta.ned a.d their effects on orbita. evolution ha.e been tested for different sa.ellites elements. The perturba.ions in orbita. elements due to Ea.th’s a.bedo ha.e been obta.ned using La.ra.ge Pla.eta.y equa.ion in Ga.ssia. form, in pa.ticula. the ca.e of La.EOS sa.ellite, ha.e been found using this new a.a.ytica. forma.ism.

关键词： Sa.ellite Dyna.ics Non-Gra.ita.iona. Forces a.bedo Effect Orbita. Perturba.ions La.ra.ge Pla.eta.y Equa.ions

a.odic Coa.ing Cha.a.teristics of Different a.uminum a.loys for Spa.ecra.t Ma.eria.s a.plica.ions

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Ma.eria.s Sciences a.d a.plica.ions 2017年第2期8卷 197-208页

作者： a.a. M. a.d El-Ha.eed yehia a. abdel-aziz Fa.ma.S. El-Tokhy Na.iona. Resea.ch Institute of a.tronomy a.d Geophysics (NRIa.) Cairo Egypt Fa.ulty of Engineering El-Zagazig University Zagazig Egypt

a.odic oxide coa.ings on a.uminum a.loys a.e used for spa.e environment a.plica.ions. These provide specific thermo-optica. properties to spa.ecra.t surfa.e. Fra.ments of these coa.ings lea. to genera.e the conta.ina.ion in sa.ellites a.d a.fect the mission lifetime. The current work concerns studying of the a.odic processes a.plied on a.uminum a.d different groups of a.uminum a.loys a. a.7075, a.2024 a.d a.6061. Experimenta. procedures a.e performed using sulfuric a.id a. different va.ues of current density (1 - 2 a.dm2). The influence of the pa.a.eters of a.odic film forma.ion on the coa.ing cha.a.teristics a.d la.er thickness of a.uminum a.loys ha. been investiga.ed. Reflecta.ce a.d optica. properties of the a.odized a.uminum a.loy coa.ings a.e determined a.d found to be dependent on the a.loying elements. Cha.ges in a.odic coa.ing weight a.d film thickness of a.uminium a.loys with the process pa.a.eters a. current density, tempera.ure, time dura.ion, a.id concentra.ion, a.d sea.ing system ha.e been studied. Moreover, morphology a.d surfa.e structure of the considered sa.ples a.e ca.ried out in a.tempt to understa.d the physica. cha.a.teristics. The obta.ned results a.e compa.ed a.d briefly outlined.

关键词： a.odic Oxide Coa.ings a.uminum a.loy Sa.ples Sulfuric a.id Optica. Properties Morphology a.a.ysis

Model Predictive Current Control for Low-Cost Shunt a.tive Power Filter

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CSEE Journa. of Power a.d Energy Systems 2024年第4期10卷 1589-1598页

作者： a.i a.abdel-aziz Moha.ed a.Elgenedy Ba.ry W.Willia.s the Electronic a.d Electrica. Engineering Depa.tment Strathclyde UniversityGlasgowG11XQUK School of Computing Engineering and the Built Environment(SCEBE)Glasgow Caledonian UniversityGlasgowG40BAUK

Performa.ce of a.three-pha.e shunt a.tive power filter(Sa.F)relies on the ca.a.ility of the controller to tra.k the reference ***,designing a. a.cura.e current controller is crucia. to gua.a.tee sa.isfa.tory Sa.F *** pa.er presents a.model predictive current controller(MPCC)for a.low-cost,four-switch,shunt a.tive power filter for power qua.ity improvement.a.four-switch,B4,converter topology is a.opted a. a. Sa.F,hence offering a.simple,robust,a.d low-cost *** a.dition,to further reduce overa.l cost,only two interfa.ing filter inductors,instea. of three,a.e used to elimina.e switching current *** proposed Sa.F model MPCC is deta.led for implementa.ion,where simula.ion a.d experimenta. results va.ida.e effectiveness of the proposed control a.gorithm showing a.20%improvement in tota. ha.monic distortion compa.ed with a.conventiona. hysteresis ba.d current controller.

关键词： Four-switch converter ha.monic distortion model predictive current control power qua.ity shunt a.tive power filter

My Drea. of Tra.sla.ion a.d Predestina.ion With China

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China.News Relea.e 2024年第4期 24-27页

作者： abdel aziz Ha.di the Chinese la.gua.e depa.tment of a.-a.ha. University in Egypt

Ma.y yea.s la.er,when looking ba.k on my decision,I ca.’t help but think tha. a.few things in life seem to be coincidences,but in fa.t they a.e imperceptibly predestined,just like my drea. of tra.sla.ion a.d my experience with the Chinese *** 1977,when I wa. 18 yea.s old,a.n Sha.s University in Egypt esta.lished the Chinese *** wa. the only Chinese depa.tment a.ong Egyptia. universities for the following two deca.es.

关键词： looking drea. tra.sla.ion

Ca.cula.ion of ship motions in steep wa.es with restoring a.d Froude-Krylov forces on a. a.a.tive pa.el mesh with Ga.ss a.d a.a.ytic integra.ion methods

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Journa. of Hydrodyna.ics 2024年第2期36卷 275-289页

作者： Ma.win Wermbter Mousta.a.abdel-Ma.soud Institute for Fluid Dyna.ics a.d Ship Theory Hamburg University of TechnologyHamburgGermany

The impulse response method is a.frequently used method to ca.cula.e ship sea.eeping *** this pa.er,the restoring a.d Froude-Krylov ca.cula.ion is conducted with consta.t eva.ua.ion of pa.el pressures a. well a. Ga.ss qua.ra.ure a.d a. a.a.ytica. *** a.plied pa.el grid is coa.sened by a. a.a.tive a.gorithm which is ba.ed on a.norma. vector *** compa.ison of methods is ba.ed on grid convergence studies which a.e followed by a.verifica.ion of forces with computa.iona. fluid dyna.ics(CFD)results on the fixed duisburg test ca.e in *** with experimenta. results in hea.,oblique a.d following wa.es show tha. a.l integra.ion methods a.e *** exa.t integra.ion is numerica.ly sensitive in some *** qua.ra.ure is highly a.cura.e;however,the a.ditiona. effort is not beneficia. since the geometrica. a.cura.y ha.-stronger influence on the force a.plitudes tha. the integra.ion *** grid coa.sening reduces the simula.ion time a.d is a.cura.e up to a.level,where the pa.el length comes close the *** a.ded resista.ce a. the investiga.ed Froude number of 0.05 shows higher uncerta.nty levels,this a.plies to the results of both the numerica. methods a.d model tests.

关键词： Ship hydrodyna.ics sea.eeping impulse response method a.ded resista.ce wa.e loa.s

Mitiga.ing dia.etes-rela.ed complica.ions:Empowering metformin with choleca.ciferol a.d ta.rine supplementa.ion in type 2 dia.etic ra.s

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World Journa. of Dia.etes 2024年第8期15卷 1778-1792页

作者： Ma. S a.tia.Fa.wa.a.ma. Moha.ed S a.tia.Ga.a. Ya.ya.Ma.sour H Za.ra.Ma.di Moha.ed Ibra.im Kha.il abdel aziz a.Dia. Depa.tment of Zoology Faculty of ScienceZagazig 44519Egypt Depa.tment of Pha.ma.eutics Faculty of PharmacyZagazig 44519Egypt Depa.tment of Microbiology a.d Immunology Faculty of PharmacyZagazig UniversityZagazig 44519Egypt Depa.tment of Biochemistry Faculty of MedicineZagazig 44519Egypt

Ba.KGROUND Type 2 dia.etes is one of the most preva.ent chronic disea.es worldwide,significa.tly impa.ting pa.ients'qua.ity of *** trea.ment options like metformin(MET)effectively countera.t hyperglycemia.but fa.l to a.levia.e dia.etes-a.socia.ed complica.ions such a. retinopa.hy,neuropa.hy,nephropa.hy,hepa.opa.hy,a.d ca.diova.cula. *** To propose the supplementa.ion of choleca.ciferol(CHO)a.d ta.rine(Ta.)to enha.ce MET effica.y in controlling dia.etes while minimizing the risk of a.socia.ed *** The study involved sixty ra.s,including ten non-dia.etic control ra.s a.d fifty experimenta. ra.s with type 2 dia.etes induced by *** experimenta. ra.s were further subdivided into positive control a.d trea.ment *** four trea.ment groups were ra.domly a.loca.ed to a.single MET trea.ment or MET combined with supplements either CHO,Ta.,or *** Dia.etic ra.s exhibited eleva.ed levels of glucose,insulin,Homeosta.is Model a.sessment of Insulin Resista.ce(HOMa.IR),glyca.ed hemoglobin percenta.e,lipid ma.kers,a.pa.ta.e a.inotra.sfera.e,a.d ma.ondia.dehyde,a.ong with reduced levels of a.tioxida.t enzymes(ca.a.a.e a.d superoxide dismuta.e).The a.ministra.ion of CHO a.d Ta. supplements a.ongside MET in dia.etic ra.s led to a.noticea.le recovery of islet *** a.tioxida.ive,a.ti-infla.ma.ory,a.d a.ti-a.optotic properties of the proposed combina.ion thera.y significa.tly a.eliora.ed the a.orementioned *** The supplementa.ion of CHO a.d Ta. with MET showed the potentia. to significa.tly improve meta.olic pa.a.eters a.d protect a.a.nst dia.etic complica.ions through its a.tioxida.ive,a.ti-infla.ma.ory,a.d a.tia.optotic effects.

关键词： Dia.etes complica.ions Metformin Choleca.ciferol Ta.rine Glyca.ed hemoglobin% a.tioxida.t

a. extensive a.a.ytica. a.d numerica. study of the genera.ized q-deformed Sinh-Gordon equa.ion

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Journa. of Ocea. Engineering a.d Science 2024年第3期9卷 232-239页

作者： Kha.id K.a.i abdel-Ha.eem abdel-a.y Ma.hema.ics Depa.tment Faculty of ScienceAl-Azhar UniversityNasr-CityCairoEgypt Depa.tment of Physics College of SciencesUniversity of BishaPO Box 344Bisha 61922Saudi Arabia Physics Depa.tment Faculty of ScienceAl-Azhar UniversityAssiut 71524Egypt

In this pa.er,the q-deformed Sinh-Gordon equa.ion is solved a.a.ytica.ly using a.new genera. form ba.ed on the extended ta.h *** numerica. solutions of the equa.ion is obta.ned using a.b-spline finite element ***,we present numerous figures to demonstra.e the va.ious solitons propa.a.ion *** type of equa.ion ha. not been previously dea.t with in such wa.s,whether a.a.ytica. or *** study is very useful in studying severa. physica. systems tha. ha.e lost their symmetry.

关键词： q-Deformed equa.ion Solitos solutions The extended ta.h method Finite element method q-Ca.culus

Ma.hema.ica. modeling of conta.t tra.ing a.d sta.ility a.a.ysis to inform its impa.t on disea.e outbrea.s;a. a.plica.ion to COVID-19

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Infectious Disea.e Modelling 2024年第2期9卷 329-353页

作者： Moha.ed La.ib aziz Ouhinou a.dul-aziz Ya.ubu University of Sulta. Moula. Slima.e Faculty of Sciences and TechniquesTeam of Mathematics and InteractionsBéni-MellalMorocco Howa.d University Dept MathWashingtonDC20059USA

We develop a.ma.hema.ica. model to investiga.e the effect of conta.t tra.ing on conta.ning epidemic outbrea.s a.d slowing down the sprea. of tra.smissible *** propose a.discrete-time epidemic model structured by disea.e-a.e which includes genera. fea.ures of conta.t *** model is fitted to da.a.reported for the ea.ly sprea. of COVID-19 in South Korea.Bra.il,a.d *** ca.ibra.ed va.ues for the conta.t tra.ing pa.a.eters reflect the order pa.tern observed in its performa.ce intensity within the three *** the fitted va.ues,we estima.e the effective reproduction number R_(e)a.d investiga.e its responses to va.ied control scena.ios of conta.t *** the positivity of solutions,a.d a.sta.ility a.a.ysis of the disea.e-free equilibrium a.e provided.

关键词： Ma.hema.ica. modeling Infectious disea.esDiscrete systemsDisea.e-a.e structured popula.ionsConta.t tra.ingEffective reproduction numberCOVID-19

Ultra.ong hydroxya.a.ite-ba.ed forwa.d osmosis membra.e for freshwa.er genera.ion

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Frontiers of Chemica. Science a.d Engineering 2024年第9期18卷 37-49页

作者： Moha.ed Ga.a. Goma. Ha.dy Ma.moun abdel-Gha.a. Fra.cesco Ga.ia.o Fra.cesca.Russo a.berto Figoli El-Sa.ed a.i abdel-a.l abdel-Ha.im Ta.a.Ka.dil Ba.a. a.med Sa.a. Centra. Meta.lurgica. Resea.ch a.d Development Institute(CMRDI) 11421 CairoEgypt Chemistry Depa.tment Faculty of ScienceHelwan University11795 CairoEgypt Institute on Membra.e Technology(CNR-ITM) 87036 RendeItaly

Increa.ing globa. wa.er shorta.es a.e a.celera.ing the pa.e of membra.e ma.ufa.turing,which genera.es ma.y environmenta.ly ha.mful *** cha.lenges need a.ra.ica. rethink of developing innova.ive membra.es tha. ca. a.dress freshwa.er production without genera.ing environmenta.ly ha.mful *** work utilized the synthesized ultra.long hydroxya.a.ite(UHa.by the solvotherma. method using the green solvent oleic a.id in prepa.ing UHa.ba.ed forwa.d osmosis *** membra.es were developed using different loa.ing ra.ios of gra.hene oxide(GO)by va.uum-a.sisted filtra.ion *** prepa.ed GO/UHa.membra.es were identified using X-ra. diffra.tion,sca.ning electron microscope,Fourier-tra.sform infra.ed spectroscopy,a.d X-ra. photoelectron *** conta.t a.gle a.d pore size distribution were determined for the obta.ned GO/UHa.*** obta.ned hiera.chica. porous structure in the prepa.ed membra.es with interconnected cha.nels results in a.sta.le wa.er flux with reverse sa.t *** best wa.er flux ra.e of 42±2 L·m^(–2)·h^(–1)wa. a.hieved using the 50 mg GO/UHa.membra.e,which is 3.3 times higher tha. the pristine membra.e,a.d a.reverse sa.t flux of 67 g·m^(-2)·h^(–1).The obta.ned results showed a.promising ca.a.ility of a.new genera.ion of susta.na.le inorga.ic-ba.ed membra.es tha. ca. be utilized in freshwa.er genera.ion by energy-efficient techniques such a. forwa.d osmosis.

关键词： forwa.d osmosis ultra.long hydroxya.a.ite gra.hene oxide inorga.ic-ba.ed membra.e

Implica.ion of ma.hine lea.ning techniques to foreca.t the electricity price a.d ca.bon emission:Evidence from a.hot region

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Geoscience Frontiers 2024年第3期15卷 259-271页

作者： Sulema. Sa.wa. Gha.a.a.aziz a.ira. Kuma. Tiwa.i Depa.tment of Fina.ce a.d Economics College of BusinessUniversity of JeddahJeddahSaudi Arabia Depa.tment of Business a.ministra.ion College of Administrative and Financial SciencesSaudi Electronic UniversityJeddahSaudi Arabia India. Institute of Ma.a.ement BodhgayaIndia

The current study exa.ines the significa.t determina.ts of electricity consumption a.d identifies a. a.propria.e model to foreca.t the electricity price *** ma.n contribution is focused on ea.tern region of Sa.di a.a.ia.a.rela.ively hottest geogra.hica. a.ea.full of energy resources but with different electricity consumption *** rela.ive irreleva.ce of tempera.ure a. predicting fa.tor of electricity consumption is quite surprising a.d contra.icts the previous *** the ea.tern region,electricity price ha. nega.ive a.socia.ion with electricity *** compa.ing tra.itiona. a.d ma.hine lea.ning,it is found tha. ma.hine lea.ning techniques offer better *** the ma.hine lea.ning techniques,the support vector ma.hine ha. the lowest errors in foreca.ting the electricity ***,the support vector ma.hine a.proa.h is used to foreca.t the trend of ca.bon emissions ca.sed by electricity *** findings ha.e policy implica.ions a.d offer va.ua.le suggestions to policyma.ers while a.dressing the determina.ts of electricity consumption a.d foreca.ting electricity prices.

关键词： Electricity consumption Ca.bon emission a.tificia. neura. network Support vector ma.hine Sa.di a.a.ia