Abstract Although I had not previously been aware of Jean Ginibre’s work on random matrices, beginning in 1978 became an admirer his many papers nonlinear waves collaboration with Giorgio Velo. Their were amazingly profound and inspirational. subsequently met times. especially remember the pleasant time spent together at a meeting 2001 Hokkaido University dedicated to memory great Tosio Kato. T...

in this research, chitosan was used for the removal of cr (vi) ions from aqueous solution. the effect of parameters like solution ph, initial cr (vi) concentration, agitation time, amount of adsorbent and agitation speed on the adsorption process was studied. the experimental equilibrium data were analyzed by using various models such as langmuir and freundlich. freundlich isotherm model fitted...