In my invited talk ‘The unreasonable effectiveness of Combinatorics in Orthogonal Polynomials I’, (July 1, 1998, 10:30-11:30 local time), at the IWOP ’98, Léganes, Madrid, (organized by Paco Marcellan and Renato Alvarez-Nodarse), I described, for most of the hour, Dominique Foata’s[F1] gorgeous and seminal proof of Mehler’s formula. As I got carried away in the exposition, I replaced the origin...

The adsorption of lead in aqueous solution onto Acrocomia aculeata pulp was examined. characterized the presence and absence using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG-DTA), scanning electron microscopy (SEM). Sulfur oxygen bonds were responsible for adsorbing surface. TG-DTA profile proved that adding sodium azide increases pulp�s thermal stability unt...

O objetivo deste trabalho foi avaliar a desinfestação, propagação in vitro e subcultivo de ora-pro-nóbis. No primeiro experimento, realizou-se desinfestação dos explantes com diferentes concentrações hipoclorito sódio (2%, 4%, 6%). segundo, realizada 600 segmentos nodais, sob meio MS (MS, MS/2, MS/4) combinações fitorreguladores: 1) ANA (0,5μM) + BAP (0,5μM); 2) (1,0μM); 3) (1,5μM); 4) (2,0μM);...