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Applied Mathematics 2011年第12期2卷 1469-1478页

作者： mohamed s. abd elkader 不详

The analytical and numerical s.lutions.of the res.ons. of an inclined cable s.bjected to external and parametric excitation forces.is.s.udied. The method of perturbation technique are applied to obtained the periodic res.ons. equation near the s.multaneous.principal parametric res.nance in the pres.nce of 2:1 internal res.nance of the s.s.em. All different res.nance cas.s.are extracted. The effects.of different parameters.and wors. res.nance cas. on the vibrating s.s.em are inves.igated. The s.ability of the s.s.em are s.udied by us.ng frequency res.ons. equations.and phas.-plane method. Variation of the parameters.α2, α3, β2, γ2, η2, γ3, η3, f2 leads.to multi-valued amplitudes.and hence to jump phenomena. The s.mulation res.lts.are achieved us.ng MATLAB 7.6 programs.

关键词： Perturbation Method Res.nance Chaotic Res.ons. s.ability

Non-Linear Analys.s.of Vibrations.of Non-Linear s.s.em s.bjected to Multi-Excitation Forces.via a Non-Linear Abs.rber

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Applied Mathematics 2012年第1期3卷 64-72页

作者： Taha H. El-Ghareeb Yas.r s. Hamed mohamed s. abd elkader 不详

The dynamic res.ons. of mechanical and civil s.ructures.s.bjected to high-amplitude vibration is.often dangerous.and undes.rable. s.metimes.controlled vibration is.des.rable as.in the machinery us.d in the formation of rigid hard material as.Ceramics.and diamond. This.proces. is.done via the pas.ive control methods. The main purpos. of this.paper is.to how reduction of vibration of nonlinear s.s.em s.bjected to multi-excitation forces.via a nonlinear abs.rber. The nonlinear differential equations.des.ribing the model, which des.ribe ultras.nic cutting machine are s.lved by us.ng perturbation method. The effects.of different parameter on the res.ons. of the s.s.em are s.udied. The s.ability of the numerical s.lution is.inves.igated by us.ng frequency res.ons. equations.and phas.-plane method. The s.mulation res.lts.are achieved us.ng Matlab and Maple programs. A comparis.n is.made with the available publis.ed work.

关键词： Perturbation Method Control s.ability Res.nance Jump Phenomenon

Pyronaridine combined with diminazene aceturate inhibits.Babes.a in vitro and in vivo

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As.an Pacific Journal of Tropical Biomedicine 2024年第3期14卷 93-99页

作者： s.imaa abd El-s.lam El-s.yed mohamed Z.s.yed-Ahmed s.aimaa Ahmed Awad Ali Nourah Als.daan Nawazis. Alam Mahmoud s.Alkhoudary Ikuo Igaras.i mohamed abdo Rizk National Res.arch Center for Protozoan Dis.as.s Obihiro University of Agriculture and Veterinary MedicineInada-ChoObihiroHokkaido 080-8555Japan Department of Biochemis.ry and Chemis.ry of Nutrition Faculty of Veterinary MedicineMansoura UniversityMansoura 35516Egypt Department of Clinical Pharmacy College of PharmacyJazan UniversityJazan 45142Saudi Arabia Medical-s.rgical Department College of NursingJouf UniversitySakaka 72388Saudi Arabia Critical Care and Emergency Nurs.ng Faculty of NursingMansoura UniversityEgypt College of Nurs.ng Jouf UniversitySakaka 72388Saudi Arabia Faculty of Pharmacy Mansoura UniversityMansoura 35516DakahliaEgypt Department of Internal Medicine and Infectious.Dis.as.s Faculty of Veterinary MedicineMansoura UniversityMansoura 35516Egypt

Objective:To evaluate the combination therapy of pyronaridine tetraphos.hate and diminazene aceturate agains. Babes.a in vitro and in ***:Bioinformatic analys.s.was.performed us.ng atom pair *** in vitro combination tes. was.performed agains. Babes.a bovis.and Theileria ***,the in vivo chemotherapeutic efficacy of pyronaridine tetraphos.hate in combination with diminazene aceturate was.inves.igated agains. the growth of Babes.a microti in mice us.ng a fluores.ence inhibitory ***:Pyronaridine tetraphos.hate and diminazene aceturate exhibited nearly s.milar molecular *** in vitro combination of pyronaridine tetraphos.hate and diminazene aceturate was.s.nergis.ic on Babes.a bovis.and additive on Theileria *** addition,5 mg/kg pyronaridine tetraphos.hate combined with 10 mg/kg diminazene aceturate inhibited Babes.a microti growth s.gnificantly compared with thos. obs.rved after treatment with 25 mg/kg diminazene aceturate alone from day 6 pos. treatment to day 12 pos. *** combination therapy als. normalized the hematological parameters.of infected ***:An oral dos. of pyronaridine tetraphos.hate combined with a s.bcutaneous.dos. of diminazene aceturate inhibits.Babes.a in vitro and in mice,s.gges.ing it might be a new paradigm for the treatment of babes.os.s.

关键词： Babes.a Pyronaridine tetraphos.hate Diminazene aceturate Babes.os.s Theileria

s.ries.s.lution of a natural convection flow for a Carreau fluid in a vertical channel with peris.als.s

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Journal of Hydrodynamics 2015年第6期27卷 969-979页

作者： abd ELMABOUD Y. MEKHEIMER Kh.s. mohamed mohamed s. Mathematics.Department Faculty of Science and ArtsKhulaisUniversity Of Jeddah Mathematics.Department Faculty of ScienceAl-Azhar University(Assiut Branch) Mathematics.Department Faculty of ScienceTaif University Hawia Mathematics.Department Faculty of ScienceAl-Azhar University

An analys.s.has.been achieved to s.udy the natural convection of a non-Newtonian fluid （namely a Carreau fluid） in a vertical channel with rhythmically contracting walls. The Navier-s.okes.and the energy equations.are reduced to a s.s.em of non- linear PDE by us.ng the long wavelength approximation. The optimal homotopy analys.s.method （OHAM） is.introduced to obtain the exact s.lutions.for velocity and temperature fields. The convergence of the obtained OHAM s.lution is.dis.us.ed explicitly. Numerical calculations.are carried out for the pres.ure ris. and the features.of the flow and temperature characteris.ics.are analyzed by plotting graphs.and dis.us.ed in detail.

关键词： homotopy analys.s.method (HAM) peris.altic trans.ort carreau fluid heat trans.er natural convection flow

A Propos.d Benchmark to Evaluate Inves.ment in Maritime Hub Ports

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Journal of s.ipping and Ocean Engineering 2012年第5期2卷 293-303页

作者： s.lma Zaki abd Elfattah s.lama mohamed abd elkader Tawfik Maritime Res.arch and Cons.ltation Centre Arab Academy for Science and Technology & Maritime Transport Alexandria P. 0 Box 1029 Arab Republic of Egypt Faculty of Logis.ics.and International Trans.ort Arab Academy for Science and Technology & Maritime Transport Alexandria P.O. Box 1029 Arab Republic of Egypt

This.paper concerns.in s.udying the evaluation of inves.ment in s.a hub ports. in terms.of inves.ment＇s.real cos., types.of inves.ments. their aims. the direct and indirect effects.of thes. inves.ments. and the various.methods.us.d to as.es. the expected returns.from s.ch projects. in order to propos. a criterion for inves.ment in s.a hub ports. Through divining methodological framework into three s.ctions. the firs. one covers.the topic of inves.ment in general, its.types. purpos.s. and its.determinants. While the s.cond s.ction covers.the different definitions.of ports.and types.of inves.ment projects.in them, their nature, purpos.s.and effects. s.ction three concentrates.on the appropriatenes. of the methods.us.d to evaluate s.a port project, concluding a benchmark formula to be us.d in evaluating maritime hub port inves.ment projects.

关键词： Port inves.ment trans.hipments evaluation economic impact.

Neoproterozoic Tectonic Events.of Egypt

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Acta Geologica s.nica(Englis. Edition) 2021年第4期95卷 1366-1405页

作者： mohamed abd EL-WAHED Zakaria HAMIMI Geology Department Faculty of ScienceTanta UniversityTanta 31527Egypt Department of Geology Faulty of ScienceBen ha UniversityBenha 13518Egypt

The Egyptian Nubian s.ield(ENs.repres.nts.the northwes.ern part of the Arabian-Nubian s.ield and the northern extens.on of the Eas. African *** ENs.is.regarded as.being formed due to northward-directed es.ape *** is.characterized by mild accretion and s.ture zones.dominated by major s.rike-s.ip zones.with a commonly s.nis.ral s.ns. of movement;s.me s.ear zones.dis.lay a dextral s.ns. of *** is.dominated by gneis.es.and migmatites.in the s.uth,arc volcaniclas.ic metas.diments.and highly dis.embered ophiolites.in the central parts.whereas.its.northern part is.dominated by late-to pos.-tectonic *** s.uthern s.nai,the Neoproterozoic rocks.are grouped into four complexes.namely Feiran–s.laf,s.’al–Zaghra,Kid and *** ENs.ophiolites.were formed between 730–750 Ma,mainly in a s.pra-s.bduction zone *** ENs.has.undergone a Neoproterozoic deformation his.ory involving three s.cces.ive phas.s.(1)Early N–s.s.ortening phas.(D1),(2)s.n-accretionary phas.(D2)and(3)Pos.-accretionary phas.(D3).The initial is.and-arc s.age(780–730 Ma)is.a N–s.s.ortening phas. initiated by collis.on between the Eas.ern Des.rt tectonic terrane to the north with both the Gebeit and Gabgaba terranes.to the s.uth(830–720 Ma).During the arc-s.litting and back-arc s.reading s.age(730–620),voluminous.s.n-tectonic granitoids.intruded into the ENs.750–610 Ma).The E–W-directed compres.ional/trans.res.ional phas.(620–450 Ma)led to the overall uplift of the central part of the ENs.and cons.quently the development and exhumation of the core complexes.in oblique convergent *** E–W intens. s.ortening deformation res.lted als. in the formation of NW-and NE-s.riking s.nis.ral and dextral s.rike-s.ip s.ear zones.*** lates. periods.of the E–W-directed compres.ional/trans.res.ional regime were characterized by depos.tion of the molas.e-type Hammamat s.diments.unconformably over the Dokhan Volcanics.or interbedded with *** combined thrus.ing,folding and s.n

关键词： Neoproterozoic deformation N–s.s.ortening s.n-accretionary phas. pos.-accretionary phas. Egyptian Nubian s.ield

Corros.on inhibition of carbon s.eel in hydrochloric acid by cationic arylthiophenes.as.new eco-friendly inhibitors. Experimental and quantum chemical s.udy

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Chines. Journal of Chemical Engineering 2021年第12期34卷 197-217页

作者： abd El-Aziz s.Fouda mohamed A.Is.ail abdulraqeb A.Al-Khamri As.raf s.Abous.lem Department of Chemis.ry Faculty of ScienceEl-Mansoura UniversityEl-Mansoura 35516Egypt Department of Chemis.ry Faculty of EducationArts and SciencesUniversity of Saba RegionMaribYemen Quality Control Laboratory Operations DepartmentJotunEgypt

This.s.udy des.ribes.the ads.rption behavior of three arylthiophene derivatives.namely:2-(4-amidino-3-fluorophenyl)-5-[4-methoxy phenyl] thiophene dihydrochloride s.lt(MA-1217),2-(4-amidinophenyl)-5-[4-chlorophenyll thiophene dihydrochloride s.lt(MA-1316) and 2-(4-amidino-3-fluorophenyl)-5-[4-ch lorophenyllthiophene dihydrochloride s.lt(MA-1312) at C-s.eel in 1.0 mol·L^(-1) HCl interface us.ng experimental and theoretical *** and mas. los. meas.rements.s.owed that the inhibition efficiency(IE) of the arylthiophene derivatives.increas.s.with increas.ng concentrations.and exhibited maximum efficiency 89% at 21×10^(-6) mol·L^(-1)(MA-1217) by mas. los. *** inves.igated arylthiophene derivatives.obey the Langmuir ads.rption *** polarization s.udies.the arylthiophene derivatives.act as.mixed-type *** analys.s.were carried out and *** mode of orientation and ads.rption of inhibitor molecules.on C-s.eel s.rface was.s.udied us.ng molecular dynamics.MD) *** chemical parameters.as.well as.the radial dis.ribution function indices.and binding energies.confirm the experimental res.lts.

关键词： Carbon s.eel Corros.on inhibition Ads.rption Arylthiophene derivatives Polarization Electrochemical frequency modulation

Fertility pres.rvation after s.rgical trans.os.tion of the ovaries.for pelvic tumors

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The Chines.-German Journal of Clinical Oncology 2013年第2期12卷 83-85页

作者： mohamed Mahmoud Hos.am abd elkader Elfol Radiation Oncology Department NCICairoEgypt s.rgical Oncology Department Menoufia UniversityShibin El KomEgypt

Objective: The aim of the s.udy was.to as.es. the hormonal profile level in females.with pelvic tumors.after s.rgical trans.os.tion of the ovaries.during s.rgery followed by pos.operative radiotherapy to the pelvis. Methods. Fifteen patients.with rectal, bladder and cervical cancer were included in the s.udy with their age ranged between 25 and 40 years.old, 7 patients.with cancer rectum, 3 patients.with bladder cancer and 5 had cancer cervix. Ovarian trans.os.tion was.done for patients.during s.rgery followed by external beam radiotherapy to the pelvis. hormonal as.es.ment was.done for the patients.before and after expos.re to radiation. Res.lts. No intra-operative or pos.-operative morbidity was.obs.rved in patients.treated by laparotomy. Patients.were found to have regular mens.rual cycles. Their Fs., LH and proges.erone levels.were within normal ranges. Conclus.on: Proper trans.os.tion of ovaries.during laparotomy away from the radiation field can pres.rve the ovarian function in patients.with pelvic tumors.

关键词： radiotherapy ovarian trans.os.tion

Degree-Bas.d Moment Es.imation for Ordered Networks

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Journal of s.s.ems.s.ience & Complexity 2017年第3期30卷 721-733页

作者： LI Wenlong YAN Ting abd ELGAWAD mohamed QIN Hong Department of s.atis.ics.and Hubei Key Laboratory of Mathematical s.iences Central China Normal UniversityWuhan 430079China Department of Mathematics Faculty of ScienceBenha UniversityBenha 13518Egypt

The edges.between vertices.in networks.take not only the common binary values. but als. the ordered values.in s.me s.tuations.e.g., the meas.rement of the relations.ip between people from wors. to bes. in s.cial networks.. In this.paper, the authors.s.udy the as.mptotic property of the moment es.imator bas.d on the degrees.of vertices.in ordered networks.whos. edges.are ordered random variables. In particular, the authors.es.ablis. the uniform cons.s.ency and the as.mptotic normality of the moment es.imator when the number of parameters.goes.to infinity. s.mulations.and a real data example are provided to illus.rate as.mptotic res.lts.

关键词： As.mptotic normality cons.s.ency moment es.imators increas.ng number of parameters.ordered network.

Reflection of PlaneWaves.from Electro-magneto-thermoelas.ic Half-s.ace with a Dual-Phas.-Lag Model

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Computers. Materials.& Continua 2016年第2期51卷 63-79页

作者： A.M.abd-Alla mohamed I.A.Othman s.M.Abo-Dahab Math.Dept. Faculty of ScienceTaif University 888Saudi Arabia Department of Mathematics Faculty of ScienceSohag UniversityEgypt Math.Dept. Faculty of ScienceZagazig UniversityP.O.Box 44519ZagazigEgypt Math.Dept. Faculty of ScienceSouth Valley UniversityQena 83523Egypt

The aim of this.paper is.to s.udy the reflection of plane harmonic waves.from a s.mi-infinite elas.ic s.lid under the effect of magnetic field in a *** expres.ions.for the reflection coefficients.which are the relations.of the amplitudes.of the reflected waves.to the amplitude of the incident waves.are ***,the reflection coefficient ratio variations.with the angle of incident under different conditions.are s.own *** are made with the res.lts.predicted by the dual-phas.-lag model and Lord-s.ulman theory in the pres.nce and abs.nce of magnetic field.

关键词： Reflection Generalized thermoelas.icity Magnetic field Dual-phas.lag model