1. Research Director, Université Paris-Est, Cereve, UMR-MA102, AgroParisTech, ENPC, 6-8 Ave. B. Pascal, Cité descartes, 77455 Marne la Vallée Cedex 2, France; and, Faculty of Engineering, Lebanese Univ., Al Hadath, Choueifat, Lebanon.
2. Res. Sci., Université Paris-Est, Cereve, UMR-MA102, AgroParisTech, ENPC, 6-8 Ave. B. Pascal, Cité Descartes, 77455 Marne la Vallée Cedex 2, France (corresponding author).