L.A.A.R. - Vol.29 - 1999

	CONTENTS
ARTICLES
L. T. Villa	A MATHEMATICAL APPROACH TO ANALYZE A STEADY DIFFUSION-REACTION PROCESS	1
N. J. Scenna, C. A. Ruiz, S. J. Benz	DYNAMIC SIMULATION FOR THE STARTUP OPERATION OF REACTIVE DISTILLATION COLUMNS	9
I.M.B. Trigatti, P. Arce	THE TUBULAR REACTOR WITH LAMINAR FLOW REGIME: AN INTEGRAL EQUATION APPROACH-II (HEAT SOURCES AND NON-LINEAR BOUNDARY CONDITIONS)	17
F. Murrieta-Guevara, M. E. Rebolledo-Libreros, A. Romero-Martínez, A. Trejo	GAS-LIQUID EQUILIBRIUM OF H2S AND CO2 IN BINARY MIXTURES OF MONOETHANOLAMINE AND DIETHANOLAMINE WITH PHYSICAL SOLVENTS	33
M. L. Parentis, N. A. Bonini, E. E. Gonzo	CHARACTERIZATION OF SILICA-SUPPORTED CHROMIUM COMPLEXES	41
G. C. Spila, H. E. Bertorello	NEW SUPERABSORBENT HYDROGELS: SYNTHESIS, CHARACTERIZATION AND APPLICATIONS	51
G. F. Santori, M. L. Lladó, G. J. Siri, M. L. Casella, O. A. Ferretti	Cu AND CuSn SUPPORTED CATALYSTS FOR SELECTIVE HYDROGENATION OF CINNAMALDEHYDE	55
M. A. Quiroz, Y. Meas	ROLE OF ADSORBED OXYGEN ON RUTHENIUM SURFACES IN THE UNDERPOTENTIAL DEPOSITION OF COPPER	61
NOTE
A. Golberg, U. Boldes, J. Colman	INFLUENCE OF THE TURBULENCE LENGTH SCALES OF THE INCIDENT WIND ON THE LEAF ELONGATION RATE (LER) OF WHEAT SEEDLINGS	69
GENERAL INFORMATION		75
INSTRUCTIONS FOR AUTHORS		76