Abderrezak Berbri

• Hassiba Benbouali University of Chlef-Algeria

The purpose of this experimental and modeling research is to study the pH effect and to determine the surface coverage plus the adsorption constant (Ka) of bovine serum albumin (BSA) protein adsorbed on TiO2 anatase surface, respectively. In situ Fourier transform infrared-attenuated total reflection spectroscopy in a flow-through cell was used to...

The aim purpose of the present work is highlighting the impact of surface oxygen vacancies and H2O flux on the behavior of water adsorption at the rutile titanium dioxide (110). Therefore, a theoretical model, based on molecular and dissociation mechanisms at different surface atomic sites, was formulated in a system of partial differential coupled...

In this work, we focus on the effect of H2O flux and temperature on the behaviour of water molecules at rutile (110) face. To achieve this goal; we converted the deferent ways of H2O on surface to a system of nonlinear differential equations based on the Langmuir equation. The results showed that H2O flux has a strong influence on the dissociation...

It is shown that when the non-isothermal trapped electron current is rederived based on the orbit-limited motion theory, the variable dust charge can be expressed in terms of the Lambert function. One can then take advantage of this new transcendental function to illustrate how variable-charge nonlinear trapped dust modes can be investigated semi-a...

Weakly nonlinear dust ion-acoustic (DIA) shock waves are investigated in a dusty plasma with nonthermal electrons. A modified Korteweg–de Vries equation with a cubic nonlinearity is derived. Due to the net negative dust charge μZd and electron nonthermality, the present plasma model can admit compressive and rarefactive weak DIA shock waves. The ef...

A weakly nonlinear analysis is carried out to derive a Korteweg-de Vries Burgers-like equation for small but finite amplitude dust ion-acoustic (DIA) waves in a charge varying dusty plasma with non thermally distributed electrons. The correct expression for the nonthermal electron charging current is used. Interestingly, it may be noted that due to...

The weakly nonlinear dynamics of dust ion-acoustic waves (DIAWs) are investigated in a dusty plasma consisting of hot ion fluid, variable charge stationary dust grains and non-thermally distributed electrons. The Korteweg–de Vries equation, as well as the Korteweg–de Vries–Burgers equation, are derived on the basis of the well-known reductive pertu...

A numerical simulation has been made to analyze the propagation of dust acoustic solitary waves in unmagnetized dusty plasma which consists of a negatively charged cold dust fluid, Boltzmann distributed electrons, positrons and ions. A system of highly nonlinear equations is integrated numerically using a scheme suitable for stiff problems and assu...

Export Date: 1 December 2013, Source: Scopus