About
Professional Summary
Dr. Essam Roshdy El-Zahar is currently working as Associate Professor of Mathematics Department, College of Science and Humanities, Salman Bin Abdulaziz University, Alkharj, Saudi Arabia. He earned his Ph.D. in Engineering Mathematics from Menofiya University, Egypt. Previously he was appointed as Demonstrator, Lecturer, and Assistant Professor at Department of Basic Engineering Science, Faculty of Engineering, Shebin El-Kom, Menofia University, Egypt. His main area of research interest focuses on Numerical Analysis and Computer Applications, Differential Equations, Computational Mathematics, and Engineering systems. He has received Award of scientific publications of Menofia University. He is member of Egyptian Society of Mathematics, and Syndicate of Egyptian Engineers. He has 21 publications in journals and 1 book contributed as author/co-author. He is also serving as reviewer for Applied Mathematics and Computation, Journal of Computational and Applied Mathematics, Journal of Modern Methods in Numerical Mathematics, International Journal of Physical Sciences, and Computers and Mathematics with Applications.
Education
Academic Background
Editorial Services
Editorial & Publishing Roles
Editorial Board Member
Jan 2018 — Present
Serving as Editorial Board Member for Asian Journal of Scientific Research.
Publications (28)
Selected Scholarly Contributions
A numerical modeling of heat and mass transfer for a falling film absorber.
Habib, H.M., A.M. Ebady and E.R. El-Zahar,
Int. J. Eng. Res. Technol.,
| Journal Article
Essam Roshdy El-Zahar
2019
Optical soliton solutions of the time-fractional perturbed Fokas-Lenells equation: Riemann-Liouville fractionalderivative.
Salah, B., E.R. El-Zahar, A.F. Aljohani, A. Ebaid and M. Krid,
Optik,
| Journal Article
Essam Roshdy El-Zahar
2019
Analysis of the two-dimensional fractional projectile motion in view of the experimental data.
Ebaid, A., E.R. El-Zahar, A.F. Aljohani, B. Salah, M. Krid and J.T. Machado,
Nonlinear Dyn.,
| Journal Article
Essam Roshdy El-Zahar
2019
On computing differential transform of nonlinear non-autonomous functions and its applications.
El-Zahar, E.R. and A. Ebaid,
Italian J. Pure Applied Math.,
| Journal Article
Essam Roshdy El-Zahar
2018
Optical soliton perturbation with Fokas-Lenells model by Riccati equation approach.
Aljohani, A.F., E.R. El-Zahar, A. Ebaid, M. Ekici and A. Biswas,
Optik,
| Journal Article
Essam Roshdy El-Zahar
2018
A new analytical solution of the hyperbolic Kepler equation using the Adomian decomposition method.
Ebaid, A., R. Rach and E. El-Zahar,
Acta Astronautica,
| Journal Article
Essam Roshdy El-Zahar
2017
Piecewise rational approximate solutions of nonlinear transient circuits using adaptive step-size MsDTM-Pade method.
Ebady, A.M., E.R. El-Zahar and A.M. Gelany,
J. Comput. Theor. Nanosci.,
| Journal Article
Essam Roshdy El-Zahar
2016
An asymptotic semi-analytical method for third-order singularly perturbed boundary value problems.
El-Zahar, E.R., A.M.N. Ebady and H.M. Habib,
Global J. Pure Applied Math.,
| Journal Article
Essam Roshdy El-Zahar
2016
Effect of chemical reaction on heat and mass transfer by mixed convection flow of casson fluid about a sphere with partial slip.
El-Kabeir, S.M., E.R. El-Zahar and A.M. Rashad,
J. Comput. Theor. Nanosci.,
| Journal Article
Essam Roshdy El-Zahar
2016
Approximate analytical solution of nonlinear third-order singularly perturbed BVPs using homotopy analysis method-Pade method.
El-Zahar, E. and S. El-Kabeir,
J. Comput. Theor. Nanosci.,
| Journal Article
Essam Roshdy El-Zahar
2016
Applications of adaptive multi step differential transform method to singular perturbation problems arising in science and engineering.
El-Zahar, E.R.,
Applied Math. Inform. Sci.,
| Journal Article
Essam Roshdy El-Zahar
2015
A non-linear fifth order a-stable explicit one-step method for stiff systems arising in chemical reactions.
El-Zahar, E.R., Y.S. Hamed and H.M. Habib,
Int. J. Pure Applied Math.,
| Journal Article
Essam Roshdy El-Zahar
2014
Vibration reduction and stability study of a dynamical system under multi-excitation forces via active absorber.
El Behady, E.E. and E.R. El-Zahar,
Int. J. Phys. Sci.,
| Journal Article
Essam Roshdy El-Zahar
2013
Mathematical modeling of heat-transfer for a moving sheet in a moving fluid.
Habib, H.M. and E.R. El-Zahar,
J. Applied Fluid Mechanics,
| Journal Article
Essam Roshdy El-Zahar
2013
Prediction of wavy liquid film profile for thin film on a falling film absorber.
Habib, H.M., E.R. El-Zahar and A.M. Ebady,
Applied Math.,
| Journal Article
Essam Roshdy El-Zahar
2013
A non-linear absolutely-stable explicit numerical integration algorithm for stiff initial-value problems.
El-Zahar, E.R.,
Am. J. Applied Sci.,
| Journal Article
Essam Roshdy El-Zahar
2013
Approximate analytical solutions of singularly perturbed fourth order boundary value problems using differential transform method.
El-Zahar, E.R.,
J. King Saud Univ.-Sci.,
| Journal Article
Essam Roshdy El-Zahar
2013
A new method for solving singularly perturbed boundary value problems.
El-Zahar, E.R. and S.M.M. El-Kabeir,
Applied Math. Inform. Sci.,
| Journal Article
Essam Roshdy El-Zahar
2013
Mathematical modeling of heat-transfer for a moving sheet situated in a moving cooling fluid with application to sheet industry.
El-Zahar, E.R. and H.M. Habib,
Int. J. Phys. Math. Sci.,
| Journal Article
Essam Roshdy El-Zahar
2012
A fourth order a-stable explicit one-step method for solving stiff differential systems arising in chemical reactions.
Ebady, A.M.N., H.M. Habib and E.R. El-Zahar,
Int. J. Pure Applied Math.,
| Journal Article
Essam Roshdy El-Zahar
2012
Variable viscosity effect on heat transfer over a continuous moving surface with variable internal heat generation in micropolar fluids.
Abdou, M.M.M. and E.R. EL-Zahar,
Applied Math. Sci.,
| Journal Article
Essam Roshdy El-Zahar
2012
An adaptive step-size taylor series based method and application to nonlinear biochemical reaction model.
El-Zahar, E.R.,
Trends Applied Sci. Res.,
| Journal Article
Essam Roshdy El-Zahar
2012
Approximate analytical solutions for singularly perturbed boundary value problems by multi-step differential transform method.
El-Zahar, E.R.,
J. Applied Sci.,
| Journal Article
Essam Roshdy El-Zahar
2012
An algorithm for solving second order nonlinear singular perturbation boundary value problems.
El-Zahar, E.R. and Y.S. Hassanein,
J. Mod. Methods Numer. Math.,
| Journal Article
Essam Roshdy El-Zahar
2011
The improved (G/G )-expansion method for solving (3+1)-dimensional potential-YTSF equation.
Hamed, Y.S., M. Sayed, S.K. Elagan and E.R. EL-Zahar,
J. Mod. Methods Numerical Math.,
| Journal Article
Essam Roshdy El-Zahar
2011
A new algorithm for solving nonlinear stationary shock problems with mechanization.
Habib, H.M. and E.R. El-Zahar,
Applied Math. Inform. Sci.,
| Journal Article
Essam Roshdy El-Zahar
2010
Variable step size initial value algorithm for singular perturbation problems using locally exact integration.
Habib, H.M. and E.R. El-Zahar,
Applied Math. Comput.,
| Journal Article
Essam Roshdy El-Zahar
2008
An algorithm for solving singular perturbation problems with mechanization.
Habib, H.M. and E.R. El-Zahar,
Applied Math. Comput.,
| Journal Article
Essam Roshdy El-Zahar
2007
