Vol. 31

2001

N║ 4


CONTENTS
Special Issue 1: ENPROMER-99 – Selected Papers
ARTICLES
S. Lucena, A. M. Souto Maior, 
C. Fonteix, I. Marc, J. P. Corriou
APPLICATION OF NONLINEAR CONTROL ON A FERMENTATION PROCESS: PRODUCTION OF SACCHAROMYCES CEREVISIAE 235
M. E. Carrin, L. N. Ceci, J. E. Lozano ULTRAFILTRATION FIBERS LIKE BIOREACTORS 241
M. R. Galli, J. Cerdß RETROFIT OF HEAT EXCHANGER NETWORKS WITH TOPOLOGY CHANGES UNDER DESIGNER CONTROL 247
S. Biagiola, J. Solsona,
R. Milocco
BIOMASS ESTIMATION IN BATCH THIOBACILLUS FERROOXIDANS CULTURES 255
S. Xu, H. E. Salomone, 
O. A. Iribarren
A SHORT-CUT APPROACH FOR THE DESIGN OF BATCH STRIPPING DISTILLATION 261
A. C. Vilaša, V. V. Murata, 
H. M. Henrique
NONLINEAR MODEL PREDICTIVE CONTROL BASED ON RADIAL BASIS NEURAL NETWORK MODELS FOR CONSTRAINED SYSTEMS 267
M. L. Wanka, K. Ropelato, 
P. R. Yunes, H. F. Meier
ANALYSIS OF THE CENTRAL BODY DEVICE ON THE PRESSURE DROP IN CYCLONES: A CFD STUDY 275
P. A. Aguirre, G. Corsano, 
M. Barttfeld
OPTIMAL SYNTHESIS OF MULTICOMPONENT DISTILLATION PROCESSES 281
T. Fornari, S. B. Bottini, 
E. A. Brignole
APPLICATION OF A GROUP CONTRIBUTION EQUATION OF STATE TO MIXTURES OF SUPERCRITICAL GASES WITH NATURAL FATTY OILS AND DERIVATIVES 287
S. Mussati, P. A. Aguirre,
N. J. Scenna
OPTIMAL SYNTHESIS OF MULTIPLE STAGE FLASH EVAPORATION 293
A. C. Zanin, M. Tvrzskß de Gouvŕa, D. Odloak IMPLEMENTATION OF A REAL TIME OPTIMIZATION STRATEGY ON THE FCC CATALYTIC CONVERTER 301
J. L. Figueroa PIECEWISE LINEAR MODELS IN MODEL PREDICTIVE CONTROL 309
A. E. Alvarez, J. A. Ressia,
L. V. Aparicio, C. Sarmoria,
E. M. Valles, A. Brandolin
BATCH EMULSION POLYMERIZATION OF VINYL CHLORIDE: EFFECT OF OPERATING VARIABLES ON REACTOR PERFORMANCE 317
S. Diaz, L. Urlic, A. Bandoni,
E. A. Brignole
RETROFIT OF NATURAL GAS TURBOEXPANSION PLANTS TO WORK IN DUAL MODE 325
R. C. Vieira, A. L. G. A. Coutinho, 
J. L. D. Alves, E. C. Biscaia Jr.
DYNAMIC SIMULATION AND OPTIMIZATION OF MULTITUBULAR REACTORS 331
M. Bagajewicz, S. Ji, J. Soto HEAT EXCHANGER NETWORKS FOR PETROLEUM FRACTIONATION UNITS HANDLING CRUDES OF DIFFERENT DENSITY 339
C. Fontes, M. J. Mendes MODELLING AND SIMULATION OF AN INDUSTRIAL SLURRY REACTOR FOR ETHYLENE POLYMERIZATION  345
M. J. Carmo, J. C. Gubulin SEPARATION OF AN ETHANOL-WATER MIXTURE IN THE PSA ADSORPTION PROCESS 353
H. M. Paredes M.,R. Bˇrquez Y. DEVELOPMENT OF AN ALTERNATIVE TREATMENT SYSTEM FOR FISHING INDUSTRY WASTE WATERS USING ULTRAFILTRATION 359
J. L. Medeiros, G. M. Xavier,
M. V. E. Duarte, O. Q. F. Ara˙jo
STOCHASTIC IDENTIFICATION OF A PROCESS WITH MULTIPLE STATIONARY STATES 367
E. V. Alvarez, M. E. Lienqueo,
J. M. Pinto
OPTIMAL SYNTHESIS OF MULTISTEP PROTEIN PURIFICATION PROCESSES 375
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