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Communications in Theoretical Physics 2020年第10期72卷 139-148页

作者： h a m ali D m habashy Physics Department Faculty of EducationAin Shams UniversityRoxyCairo 11757Egypt

The impedance spectroscopy,electrical conductivity and electric modulus of bulk phenol red were measured,as a function of both frequency and *** neural networks(ANNs)were used for modeling its electrical *** two parts(real and imaginary)of its complex impedance(Z^*)were analyzed and the activation energy related to the electrical relaxation process was *** curves were plotted showing semicircles for the different *** AC electrical conductivity follows a power lawσac(ω)αω^η.The maximum barrier height Bm was derived for specific temperatures.A plausible mechanism for the AC conduction of bulk phenol red was deduced from the temperature reliance of the frequency *** dielectric data was analyzed using electric modulus as a *** addition,ANNs were used to model the impedance parts and the total electrical *** runs were tried,to obtain the best *** training and prediction results were compared to the equivalent experimental results,with a good match *** equation describing the experimental results was obtained mathematically,based on the use of *** outputs demonstrated that ANNs are an admirable tool for modeling experimental results.

关键词： phenol red impedance spectroscopy electric modulus neural network

Optical and electrical characterizations of nanoparticle Cu_2S thin films

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Chinese Physics B 2014年第4期23卷 476-481页

作者： m.Saadeldin h.S.Soliman h.A.m.ali K.Sawaby Physics Department Faculty of Science Cairo University Physics Department Faculty of Education Ain-Shams University

Copper sulfide thin films are deposited onto different substrates at room temperature using the thermal evaporation technique. X-ray diffraction spectra show that the film has an orthorhombicchalcocite （7-Cu2S） phase. The atomic force microscopy images indicate that the film exhibits nanoparticles with an average size of nearly 44 nm. Specrtophotometric measurements for the transmittance and reflectance are carried out at normal incidence in a spectral wavelength range of 450 nm-2500 nm. The refractive index, n, as well as the absorption index, k is calculated. Some dispersion parameters are determined. The analyses of el and e2 reveal several absorption peaks. The analysis of the spectral behavior of the absorption coefficient, c~, in the absorption region reveals direct and indirect allowed transitions. The dark electrical resistivity is studied as a function of film thickness and temperature. Tellier＇s model is adopted for determining the mean free path and bulk resistance.

关键词： physical properties of Cu2S thermal evaporation nanoparticle Cu2S thin films

Study of abundant explicit wave solutions of the Drinfeld-Sokolov-Satsuma-hirota(DSSh)equation and the shallow water wave equation

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Propulsion and Power Research 2018年第4期7卷 320-328页

作者： h.m.Shahadat ali m.mamun miah m.ali Akbar Department of Applied mathematics Noakhali Science and Technology UniversityNoakhali 3814Bangladesh Department of mathematics Khulna University of Engineering&Technology.Khulna 9203Bangladesh Department of Applied mathematics University of Rajshahi.Rajshahi 6205Bangladesh

In this article,the two variable(G'G,1/G)-expansion method is suggested to investigate new and further general multiple exact wave solutions to the Drinfeld-Sokolov-Satsuma-hirota(DSSh)equation and the shallow water wave equation which arise in mathematical physics with the aid of computer algebra software,like *** functions and the rational functions solution are *** method demonstrates power,reliability and ***,the method is the generalization of the well-known(G/G)-expansion method established by Wang et *** the method also presents a wider applicability for conducting nonlinear wave equations.

关键词： Explicit wave solutions Computer algebra software Drinfeld-Sokolov-Satsuma-hirota(DSSh)equation Shallow water wave equation Soliton

Efficiency enhancement of building multi-layer solar collector with SiO2–TiO2 hybrid nanofluids

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Building Simulation 2023年第10期16卷 1851-1862页

作者： N.N.m.Zawawi W.h.Azmi Z.A.A.majid R.A.Rahim h.m.ali Lebuhraya Tun Razak Centre for Research in Advanced Fluid and Processes26300GambangKuantanPahangMalaysia Faculty of mechanical and Automotive Engineering Technology Universiti Malaysia PahangPekanPahang26600Malaysia Kulliyyah of Allied health Sciences International Islamic University of MalaysiaBandar Indera Mahkota25200KuantanPahangMalaysia ECE Department Kulliyyah of EngineeringInternational Islamic University MalaysiaJalan GombakKuala LumpurMalaysia mechanical Engineering Department King Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia Interdisciplinary Research Center for Renewable Energy and Power Systems(IRC-REPS) King Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia

Due to the depletion of conventional energy sources and its limitless resources,solar energy is currently being considered as a viable alternative,especially for water heating *** thermal performance of multilayer solar collectors for water heating systems can be improved further by introducing hybrid nanofluids as advanced *** study demonstrates the utilisation of hybrid nanofluids in heating systems by employing a multilayer absorber solar *** SiO2–TiO2 hybrid nanofluids at volume concentrations up to 2.0%were tested at various flow rates(1.7 to 3.7 LPm)and solar radiation intensities(250 to 1000 W/m2).The thermal performance of the solar collector was assessed by measuring the temperature variation,heat loss,and overall efficiency of the *** the optimal volume concentration,the temperature difference for solar collectors employing SiO2–TiO2 hybrid nanofluids increased *** optimal volume concentration of 1.5%yields a maximum temperature difference of 9.5°*** addition,the efficiency and fluid temperature of the solar collector containing hybrid nanofluids have been enhanced by 22%and 37%,*** SiO2–TiO2 hybrid nanofluids with the optimal volume concentration of 1.5%were therefore recommended for maximum efficiency in the solar collector.

关键词： solar collector hybrid nanofluids solar water heating system solar simulator thermal efficiency

Abundant closed form wave solutions to some nonlinear evolution equations in mathematical physics

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Journal of Ocean Engineering and Science 2020年第3期5卷 269-278页

作者： m.mamun miah Aly R.Seadawy h.m.Shahadat ali m.ali Akbar Department of mathematics Khulna University of Engineering&TechnologyBangladesh mathematics Department Taibah UniversityAl-Madinah Al-MunawarahSaudi Arabia Department of mathematics Beni-Suef UniversityEgypt Department of Applied mathematics Noakhali Science and Technology UniversityBangladesh Department of Applied mathematics University of RajshahiRajshahi 6205Bangladesh

The propagation of waves in dispersive media,liquid flow containing gas bubbles,fluid flow in elastic tubes,oceans and gravity waves in a smaller domain,spatio-temporal rescaling of the nonlinear wave motion are delineated by the compound Korteweg-de Vries(KdV)-Burgers equation,the(2+1)-dimensional maccari system and the generalized shallow water wave *** this work,we effectively derive abundant closed form wave solutions of these equations by using the double(G′/G,1/G)-expansion *** obtained solutions include singular kink shaped soliton solutions,periodic solution,singular periodic solution,single soliton and other solutions as *** show that the double(G′/G,1/G)-expansion method is an efficient and powerful method to examine nonlinear evolution equations(NLEEs)in mathematical physics and scientific application.

关键词： Close form solutions KdV-Burgers equation The(2+1)-dimensional maccari system The generalized shallow water wave equation

Further investigations to extract abundant new exact traveling wave solutions of some NLEEs

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Journal of Ocean Engineering and Science 2019年第4期4卷 387-394页

作者： m.mamun miah Aly R.Seadawy h.m.Shahadat ali m.ali Akbar Department of mathematics Khulna University of Engineering and TechnologyBangladesh mathematics Department Taibah UniversityAl-Madinah Al-MunawarahSaudi Arabia Department of mathematics Beni-Suef UniversityEgypt Department of Applied mathematics Noakhali Science and Technology UniversityBangladesh Department of Applied mathematics University of RajshahiRajshahi-6205Bangladesh

In this study,we implement the generalized(G/G)-expansion method established by Wang et *** examine wave solutions to some nonlinear evolution *** method,known as the double(G/G,1/G)-expansion method is used to establish abundant new and further general exact wave solutions to the(3+1)-dimensional Jimbo-miwa equation,the(3+1)-dimensional Kadomtsev-Petviashvili equation and symmetric regularized long wave *** solutions are extracted in terms of hyperbolic function,trigonometric function and rational *** solitary wave solutions are constructed from the obtained traveling wave solutions if the parameters received some definite *** of the solutions are also depicted to describe the phenomena apparently and the shapes of the obtained solutions are singular periodic,anti-kink,singular soliton,singular anti-bell shape,compaction *** method is straightforward,compact and reliable and gives huge new closed form traveling wave solutions of nonlinear evolution equations in ocean engineering.

关键词： Exact traveling wave solutions (G/G,1/G)-expansion method (3+1)-dimensional Jimbo-miwa equation (3+1)-dimensional Kadomtsev-Petviashvili equation Symmetric regularized long wave equation

Solving Nonlinear Fractional Differential Equation by Generalized mittag-Leffler Function method

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Communications in Theoretical Physics 2013年第6期59卷 661-663页

作者： A.A.m.Arafa Z.Rida A.A.mohammadein h.m.ali Department of mathematics and Computer Science Faculty of Science Port Said University Department of mathematics Faculty of Science South Valley University Department of mathematics Faculty of Science Aswan University

In this paper, we use mittag-Leffler function method for solving some nonlinear fractional differential equations. A new solution is constructed in power series. The fractional derivatives are described by Caputo's se... 详细信息

关键词： nonlinear fractional differential equations mittag-Leffler function Caputo fractional derivative

New applications of the two variable (G ′/ G,1/ G)-expansion method for closed form traveling wave solutions of integro-differential equations

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Journal of Ocean Engineering and Science 2019年第2期4卷 132-143页

作者： m.mamun miah h.m.Shahadat ali m.ali Akbar Aly R.Seadawy Department of mathematics Khulna University of Engineering and TechnologyBangladesh Department of Applied mathematics Noakhali Science and Technology UniversityBangladesh Department of Applied mathematics University of RajshahiBangladesh mathematics Department Faculty of ScienceTaibah UniversityAl-Madinah Al-MunawarahSaudi Arabia Department of mathematics Faculty of ScienceBeni-Suef UniversityEgypt

most fundamental themes in mathematical physics and modern engineering are investigated by the closed form traveling wave solutions of nonlinear evolution *** our research,we ascertain abundant new closed form traveling wave solution of the nonlinear integro-differential equations via Ito equation,integro-differential Sawada-Kotera equation,first integro-differential KP hierarchy equation and second integro-differential KP hierarchy equation by two variable(G/G,1/G)-expansion method with the help of computer package like *** shape of solutions like,bell profile solution,anti-king profile solution,soliton profile solution,periodic profile solution *** obtain in this *** function solution,hyperbolic function solution and rational function solution are established by using our eminent method and comparing with our results to all of the well-known results which are given in the *** means of free parameters,plentiful solitary solutions are derived from the exact traveling wave *** method can be easier and more applicable to investigate such type of nonlinear evolution models.

关键词： The two variable(G/G,1/G)-expansion method Travelling wave solutions Integro-differential ito equation Integro-differential Sawada-Kotera equation First integro-differential KP hierarchy equation Second integro-differential KP hierarchy equation.

Structural and optical properties of nano-spin coated sol-gel porous TiO_2 films

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Transactions of Nonferrous metals Society of China 2012年第12期22卷 3003-3011页

作者： m.m.El-NAhASS m.h.ali A.El-DENGLAWEY Physics Department Faculty of Education Ain Shams University Roxy Cairo 11757 Egypt Physics Department Faculty of Science Ain Shams University Cairo Egypt Physics Department Faculty of Science South Valley University Qena 83523 Egypt Phys Dep Fac of Appl Med Sci Turabah 21995 Taif University KSA

Three thicknesses of TiO2 films, 174, 195, and 229 nm, were deposited onto quartz substrates by sol–gel spin coating method. The as-deposited thin films were characterized by nano-crystallite with different sizes (19–46 nm) and relatively high porous structure. Optical constants were determined and showed the lowest refractive index of 1.66 for the as-prepared films that ever reported till now. Obtained results were discussed through current theoretical ideas.

关键词： TiO2 films optical properties nanostructure electron microscopy thin films spin coating technique

熔融和辐射对垂直多孔嵌入微通道mhD混合对流换热的影响

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Journal of Central South University 2023年第11期30卷 3670-3681页

作者： A T AKINShILO A O ILEGBUSI h m ali m SANUSI m G SOBAmOWO Department of mechanical Engineering University of LagosAkoka-YabaLagosNigeria Department of mechanical Engineering Yaba College of TechnologyLagosNigeria mechanical Engineering Department King Fahd University of Petroleum and MineralsDharan 31261Saudi Arabia Interdisciplinary Research Center of Renewable Energy and Power Systems(IRC-REPS) King Fahd University of Petroleum and MineralsDharan 31261Saudi Arabia Department of mechanical Engineering Obafemi Awolowo UniversityIle-IfeOsunNigeria

研究了导电和非导电两种壁型多孔微通道的熔融和滑移效应对混合对流换热的影响。采用高阶常微分非线性耦合模型,研究了横向磁场作用下流体在微通道内注入和喷出的流动力学。这些都是在通过相似变换完成的。采用解析解的同伦摄动方法对... 详细信息

研究了导电和非导电两种壁型多孔微通道的熔融和滑移效应对混合对流换热的影响。采用高阶常微分非线性耦合模型,研究了横向磁场作用下流体在微通道内注入和喷出的流动力学。这些都是在通过相似变换完成的。采用解析解的同伦摄动方法对控制热流体输运的力学模型进行了分析,并利用已有文献在简单条件下进行了验证并得到满意的结果。研究了流体输送过程中传热流变参数的影响,以提高系统运行效率,降低能耗,从而最大限度地降低成本。结果表明,熔体和辐射对热边界层的共同作用使热边界层的厚度逐渐减小。当辐射参数(R)在1

关键词：强化传热熔融微通道辐射优化多孔介质