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يسعدنى أن ارحب بزيارتكم وأجو أن تستفيدوا من محتويات الموقع فأهلا بكم.
أ.م.د/ رزق فتحى ياسين علي، أستاذ مساعد بقسم: الرياضيات، بكلية: العلوم

أحدث أبحاثى
* The Two-center Correlated Exchange Integral over Slater-type Orbitals
* Analytical Evaluation of the Two-Center Correlated Hybrid Integral over Slater-type Orbitals
* Adaptive Step-size Nonlinear Explicit Integration Algorithm for ODEs

الأبحاث العلمية

The Two-center Correlated Exchange Integral over Slater-type Orbitals
International Journal of Engineering Research and Technology. ISSN 0974-3154, Volume 12, Number 12 (2019), pp. 2611-2613
Rizk Yassen
Analytical Evaluation of the Two-Center Correlated Hybrid Integral over Slater-type Orbitals
International Journal of Engineering Research and Technology. ISSN 0974-3154, Volume 12, Number 11 (2019), pp. 2031-2035
R.F. Yassen
Adaptive Step-size Nonlinear Explicit Integration Algorithm for ODEs
International Journal of Engineering Research and Technology. ISSN 0974-3154, Volume 12, Number 12 (2019), pp. 3151-3155
Essam. R. El-Zahar
Rizk yassen
MHD Free Convection of Localized Heat Source/Sink in Hybrid Nanofluid-Filled Square Cavity
Journal of Nanofluids 2008, Vol. 8, pp. 1–12, (2020)
Ali J. Chamkha
Rizk Yassen
Muneer A. Ismael
A.M. Rashad
T. Salah
Hossam A. Nabwey
Nonlinear Wave Interaction in Magnetized plasma with two-Temperature Kappa –Distributed Electrons
International Journal of Applied Engineering Research Volume .12,No .24(2017) 1400-14007
R.F. Yassen
The Three-Center Hybrid and Four-Center Electron Repulsion Integrals over Slater-Type Orbitals Using Guseinov Rotation-Angular Function
Int. J. Contemp. Math. Sciences, Vol. 7, No. 39(2012) 1903-1907.
RizkYassen
Mariam Algarni
The Multicenter Integrals over Slater-Type Orbitals in Hartree-Fock-Roothaan Equations Using Guseinov Rotation-Angular Function
Int.J. Contemp. Math. Sciences, Vol. 7, No. 27(2012) 1325-1335
RizkYassen
Mariam Algarni
Analytical Evaluation of Two-Center Kinetic Energy Integral for Slater-Type Orbitals Using Guseinov Rotation-Angular Function
Int.J. Contemp. Math. Sciences, Vol. 5, No. 44 (2010) 2189-2200
RizkYassen
Mariam Algarni
Analytical evaluation of multicenter nuclear attraction integrals for Slater-type orbital\'s using Guseinov rotation-angular function
Int. J. Contemp. Math. Sciences, Vol. 5, No. 27 (2010) 1309 - 1321
RizkYassen
Mariam Algarni
Chaos and optimal control of a coupled dynamo with different time horizons
Chaos,Solutions and Fractals , Vol 41,No 2 (2009) 698-710
Awad EL –Gohary
Rizk Yassen
Adaptive control and synchronization of a coupled dynamo system with uncertain parameters
Chaos, Solitions and Fractals 29 (2006) 1085 -1094
Awad EL –Gohary
Rizk Yassen
Expressions for One - and Two – Center Electron Density and its Application to Some Multi- Center Integrals
Proc. Math. Phys. Soc. Egypt, No.73, pp.183-192, (1998)
R.F. Yassen
An analytical evaluation of two-center integrals containing the Slater-type orbitals (STO’s) and the electron correlation multiplier , with k being a non-negative integer
Asian Journal of Physics, Vol 7, No 1, pp.145-151, (1998)
R.F. Yassen
On the one-electron multicenter integrals in Roothaan equation’s over Slater-type orbitals and its applications
Asian Chemistry Letters, Vol 2, No.4, pp.141-154, (1998)
R.F. Yassen
Evaluation of Overlap Integrals with the Same Screening Parameters of Slater-Type Orbitals Using Gegenbauer Polynomials
Proc. Math. Phys. Soc. Egypt, No.72, pp.97- 103, (1997)
I.I. Guseinov
R.F. Yassen
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