The growth dynamics of the wedding-cake Interfaces

In the limit where the ratio of the surfaces diffusion coefficient to the deposition rate D/F ∞ → , the surface consists of wedding-cake structures. In order to understand the growth dynamics and the scaling properties of theses interfaces, we have calculated the time evolution of its width ω(L,t) for both one and two dimensional lattice. By the use of the dynamic scaling approach, we find that ω(L,t) scales with time t and length L as ω(L,t)≈Lα f(t/Lα/β ) where f is a scaling function and α and β are respectively the roughening and the growth exponents. The values of theses exponents are in good agreement with the theoritical ones predicted by the Edwards-Wilkinson equation.In the limit where the ratio of the surfaces diffusion coefficient to the deposition rate D/F ∞ → , the surface consists of wedding-cake structures. In order to understand the growth dynamics and the scaling properties of theses interfaces, we have calculated the time evolution of its width ω(L,t) for both one and two dimensional lattice. By the use of the dynamic scaling approach, we find that ω(L,t) scales with time t and length L as ω(L,t)≈Lα f(t/Lα/β ) where f is a scaling function and α and β are respectively the roughening and the growth exponents. The values of theses exponents are in good agreement with the theoritical ones predicted by the Edwards-Wilkinson equation

ANTILEISHMANIAL ACTIVITY OF SOME PLANTS GROWING IN ALGERIA: JUGLANS REGIA, LAWSONIA INERMIS AND SALVIA OFFICINALIS.

The current study was undertaken to evaluate in vitro the antileishmanial activity of three plants growing wild in Algeria : Juglans regia, Lawsonia inermis and Salvia officinalis. The hydroalcoholic extracts of these plants were tested on the growth of the promastigotes of Leishmania major. The plant extract effects were compared with three controls : CRL1 composed of 1 ml RPMI inoculated with 106 of promastigotes, CRL2 composed of 1 ml RPMI inoculated with 106 of promastigotes and 100 μl of hydroalcoholic solvent, CRL3 composed of 1 ml RPMI inoculated with 106 of promastigotes and 100 μl of Glucantim as a reference drug in the management of leishmaniasis. The results showed that both J. regia and L. inermis extracts reduced the promastigotes number significantly (

Le concept d'accessibilité SAW : Application à Windows pour handicapés visuels arabophones

International audienc

LECWIN : Vers un lecteur d'écran sous Windows destiné aux déficients visuels arabophones

Dates de conférence : novembre 1997 1997. Pages de la publication : ?.International audienc

Le concept d'accessibilité SAW : Application à Windows pour handicapés visuels arabophones

International audienc

LECWIN : Vers un lecteur d'écran sous Windows destiné aux déficients visuels arabophones

Dates de conférence : novembre 1997 1997. Pages de la publication : ?.International audienc

Quelles méthodes d'évaluation des systèmes de synthèse vocale : Application à SYNTHAR+ couplé à Multivox

Dates de conférence : décembre 1998 1998.International audienc

Quelles méthodes d'évaluation des systèmes de synthèse vocale : Application à SYNTHAR+ couplé à Multivox

Dates de conférence : décembre 1998 1998.International audienc

Quelles méthodes d'évaluation des systèmes de synthèse vocale : Application à SYNTHAR+ couplé à Multivox

Dates de conférence : décembre 1998 1998.International audienc