Vol. 27

1997

Nº 4

	CONTENTS
REVIEW
R. Rivero, and A. Anaya	EXERGY ANALYSIS OF INDUSTRIAL PROCESSES -Energy - Economy - Ecology	191
ARTICLES
G. Chen, G. Chen, and L. Hong	A PERCEPTUAL GROUPING AND FUZZY LOGIC APPROACH FOR OBJECT RECOGNITION FROM AMBIGUOUS IMAGES	207
C. L. A. Berli, and J. A. Deiber	INELASTIC RHEOKINETIC MODEL FOR WHEY PROTEIN SUSPENSIONS	219
P. G. Toledo, and Y. C. Araujo	WETTABILITY OF RESERVOIR MATERIAL BY SURFACE SCIENCE ANALYTICAL TECHNIQUES	227
A. P. Rossi, and J. L. Figueroa	ECONOMIC PERFORMANCE OF OPTIMAL LINEAR CONTROL IN PROCESS INDUSTRIES: A CASE STUDY	235
E. L. Sham, E. M. Farfán-TorresR. L. Michel, and J. C. Gottifredi	PREPARATION OF TITANIA-ZIRCONIA MATERIALS BY THE SOL-GEL METHOD FROM METAL ALKOXIDES	245
GENERAL INFORMATION		255
INSTRUCTIONS FOR AUTHORS		256