Faculty Members researchs

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Mahzari, M. A. (2017). A Sociopragmatic Study of the Congratulation Strategies of Saudi Facebook Users. (Doctoral Dissertation). Arizona State University. Tempe, Arizona Mohammad Abdoh Mahzari

 The aim in this sociopragmatic study was to identify the verbal and nonverbal types of responses used by Saudi Facebook users in the comments of congratulations on the events of happy news status updates on Facebook. 

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Quantum of transverse Relaxation Time اسماء محمد البشير سعدAsma محمدMohammed سثدElbashir Saad

Transverse relaxation time T2 , plays an important role in MRI. It represents one of the important factors affecting image quality and the relaxation time. The aim of this work is to utilize the laws of quantum mechanics and electromagnetic theory to obtain new expressions for T2.  

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. A. Nada, T. M. Abd EL-Maksoud H., Abu Zeid, I. E. El-Asy, S. M. I. Mostaf & S. A. Abd El-Azeem, Correlation between radionuclides associated with zircon and monazite in beach sand of Rosetta, Egypt, J Radioanal Nucl Chem (2012) 291:601–610.

 Correlation between radionuclides associated with zircon and   monazite in beach sand of Rosetta, Egypt

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. Ibrahiem N.M., Nada A., Abd EL-Maksoud T.M., El Ezaby B. & Abd El Azeem S.A., the 10th International Congress of International Radiation Protection Association, IRPA-10, Hiroshima, Japan, May 14-19 (2000).

radiation measurments of raw and by peoducts materials

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Ibrahiem N.M., Nada A., Abd EL-Maksoud T.M., El Ezaby B. & Abd El Azeem S.A., the 7th conference of Nuclear Physics and Applications, Cairo, Egypt, 6-10 Feb (2000).

measurments of natural radioavtivity in some idusterial materiales

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Modified electron acoustic field and energy applied to observation data Hesham Gomaa Mohammed Abdelwahed
Improved electrostatic acoustic field and energy have been debated in vortex trapped hot electrons and fluid of cold electrons with pressure term plasmas. The perturbed higher-order modified- Korteweg-de Vries equation (PhomKdV) has been worked out. The effect of trapping and electron temperatures on the electro-field and energy properties in auroral plasmas has been inspected. ...
On Time-Fractional Cylindrical Nonlinear Equation Hesham Gomaa Mohammed Abdelwahed
Properties of cylindrical electron acoustic solitons are studied in vortex plasmas. The modified cylindrical Korteweg–de Vries (KdV) equation is acquired and converted into the time fractional cylindrical modified KdV equation by Agrawal’s analysis. Via the Adomian decomposition method, a cylindrical soliton solution to the equation is obtained. The cylindrical time fractional effect on the wave properties is investigated. Further, the increase of the fractional order of time ...
Higher-Order Corrections to Earth's Ionosphere Shocks Hesham Gomaa Mohammed Abdelwahed
Nonlinear shock wave structures in unmagnetized collisionless viscous plasmas composed fluid of positive (negative) ions and nonthermally electron distribution are examined. For ion shock formation, a reductive perturbation technique applied to derive Burgers equation for lowest-order potential. As the shock amplitude decreasing or enlarging, its steepness and velocity deviate from Burger equation. Burgers type equation with higher order dissipation must be obtained to avoid this deviation. Solution for the compined two equations has been derived using renormalization analysis. Effects of higher-order, positive- negative mass ratio Q, electron nonthermal parameter δ and kinematic viscosities coefficient of positive (negative) ions η1 and η2 on the electrostatic shocks in Earth’s ionosphere are also argued. ...
On the ion acoustic obliquely propagation in magnetized inhomogeneous plasmas Hesham Gomaa Mohammed Abdelwahed

Inhomogeneous multi-component magnetized plasmas containing inertial ions, nonthermal electrons, and Boltzmannian positrons have been investigated theoretically. Variable coefficients Zakharov Kuznetsov (VZK) equation has been derived in a small amplitude limit. It is found that the propagation directions, positron parameters and magnetic field affected the properties of propagation of positive-negative solitary waves.

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Using New Mathematical Methods In Solving Bare And Reflected Neutron Diffusion Equations Mohammed Abd Elrahman Shqair
The nuclear reactors are very important as sources of power and in the nuclear researches. The understanding of neutrons properties and motion by diffusion equation which is a simplification of transport equation is an essential task. In this work, we will use new mathematical methods, which succeeded in solving similar differential equations, to formulate new analytical solutions of the neutron diffusion equations for different reactor geometries of fissile materials. The results will be compared to canonical calculations, as well as to results from transport theory. This comparison will be achieved after computationally applying the developed theory and analytical formulas in numerical experiments. The result expected to improve the solution of diffusion equations compared to transport equations as a benchmark. The methodology furnishes the ground for further future research in this field. ...
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