A nonlinear analytical technique (Homotopy Perturbation Method) has been developed to assess the effects of several nanofluids characteristics on the free convective heat transfer to the power-law non-Newtonian flow between two infinite parallel vertical flat plates. A numerical...
In this paper we combined the Laplace Transform with Adomian Decomposition Method (ADM) and presented an approach for solving non linear coupled and non coupled Schrödinger equation, with initial conditions. It is shown that the method does not need linearization, weak nonlineari...
Photoconductivity of ТiO2 thin films is investigated in experiment. The excitation is performed by both a continuous Hg quartz lamp and laser sources. The photoconductivity kinetics and spectrum are investigated. The multi relaxation character of photoconductivity kinetics is rev...
The crystal and molecular structure of (E)-methyl 3-(2-hydroxyphenyl)-2-(piperidine-1-carbonyl)acrylate, synthesized by one-pot three component reaction of salicylaldehyde, diethyl malonate and piperidine, has been reported. The title compound 4 crystallizes from a mixture of pet...
This paper mainly focuses the effect of palm oil fuel ash (POFA) on the microstructure of self-consolidating high-strength concrete (SCHSC). POFA has been used as a supplementary cementing material replacing ordinary portland cement (OPC) in the range of 0-30%. SCHSC mixes were p...
Aims: In the present work we explore magnetic properties especially spin glass, antiferromagnetic and paramagnetic states of diluted magnetic semiconductors (A1-xMnxA' (A = Zn, Cd and A' = S, Te, Se)). Place: Department of physics, College of natural sciences, Addis Ababa Univers...
Nonequilibrium statistical operator (NSO) in the form suggested by Zubarev is represented as an averaging operation of the quasiequilibrium statistical operator over the distribution of the lifetime of the system. The form of the density function of the system lifetime affects al...
Corrosion in steel reinforced concrete structures has prompted researchers to work on alternative material to steel that are resistance to corrosion. This paper looked at the use of bamboo and rattan cane as alternative materials to steel in reinforced concrete struts. Fifteen (...
A theoretical investigation has been made of the roles of the degeneracy and the dynamics of electrons and ions on the DIA (dust ion-acoustic) Korteweg-de Vries (K-dV) and modified Kortewegde Vries (mK-dV) solitons that are found to exit in a dusty degenerate dense plasma contain...
In this paper, the modified double sub-equation method is proposed to construct complexiton solutions of nonlinear partial differential equations (PDEs). By means of this method, some new complexiton solutions to nonlinear PDEs are obtained, which are non-travelling wave and vari...