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|Title:||A theoretical and experimental program on human and animal behaviour|
Del Refugio Torres-Vitela, M.
|Abstract:||Pulque is a traditional Mexican fermented alcoholic beverage produced from the nectar of maguey agave plants. No data exist on the behavior of Escherichia coli O157:H7 in agave nectar and pulque. An initial trial was done of the behavior of E. coli O157:H7 during fermentation of nectar from a single producer, a nectar mixture from different producers and "seed" pulque. A second trial simulating artisanal pulque production was done by contaminating fresh nectar with a cocktail of three E. coli O157:H7 strains, storing at 16 and 22°C for 14. h, adding seed pulque and fermenting until pulque was formed. A third trial used pulque from the second trial stored at 22°C as seed to ferment fresh nectar at 22°C for 48. h (fermentation cycle). This procedure was repeated for an additional two fermentation cycles. During incubation at 16 or 22°C in the first trial, the E. coli O157:H7 strains multiplied in both the single producer nectar and nectar mixture, reaching maximum concentration at 12. h. E. coli O157:H7 cell concentration then decreased slowly, although it survived at least 72. h in both fermented nectars. E. coli O157:H7 did not multiply in the seed pulque but did survive at least 72. h. In the second trial, the numbers of E. coli O157:H7 increased approximately 1.5. log. CFU/ml at 22°C and 1.2. log. CFU/ml at 16°C after 14. h. After seed pulque was added, E. coli O157:H7 concentration decreased to approximately 2. log. CFU/ml, and then remained constant until pulque was produced. In the third trial, the E. coli O157:H7 cells multiplied and survived during at least three nectar fermentation cycles. The results suggest that E. coli O157:H7 can develop acid and alcohol tolerance in pulque, and constitutes a public health risk for pulque consumers. " 2011 Elsevier B.V.",,,,,,"10.1016/j.ijfoodmicro.2011.12.027",,,"http://hdl.handle.net/20.500.12104/39196","http://www.scopus.com/inward/record.url?eid=2-s2.0-84856434768&partnerID=40&md5=2f01c84d1936246e0efa11e8b3673359",,,,,,"01-feb",,"International Journal of Food Microbiology",,"79|
WOS",,,,,,"Acid tolerance; Agave nectar; Alcohol tolerance; Escherichia coli O157:H7; Pulque",,,,,,"Acid and alcohol tolerance of Escherichia coli O157:H7 in pulque, a typical Mexican beverage",,"Article" "40937","123456789/35008",,"Alcaraz, V., Univ. de Guadalajara, Dpto. de Ing. Química, Blvd. Marceline García BarraganN1451, 44430 Guadalajara, Jalisco, Mexico; Salazar, R., Univ. de Guadalajara, Dpto. de Ing. Química, Blvd. Marceline García BarraganN1451, 44430 Guadalajara, Jalisco, Mexico; González, V., Univ. de Guadalajara, Dpto. de Ing. Química, Blvd. Marceline García BarraganN1451, 44430 Guadalajara, Jalisco, Mexico; Gouz , J.L., Univ. de Guadalajara, Dpto. de Ing. Química, Blvd. Marceline García BarraganN1451, 44430 Guadalajara, Jalisco, Mexico",,"Alcaraz, V.
Gouze, J.L.",,"2004",,"In this paper a tunable asymptotic observer for non-linear dynamic systems that can be described by a set of ordinary differential equations, is proposed. In contrast with classical asymptotic observers, this one is provided with variable gains that can be tuned by the user. At the first stage of the estimation, the observer is robust against disturbances induced by poorly known non-linear terms. Eventually, the observer becomes fully independent of the nonlinear terms and thus robust against any disturbance induced by the nonlinear terms. The performance of the observer is tested through rigorous simulations in a dynamic anaerobic digestion model for wastewater treatment, showing excellent convergence and stability properties. Finally, it is shown that the proposed observer yields faster estimates than those obtained by using the classical asymptotic observers.",,,,,,,,,"http://hdl.handle.net/20.500.12104/39158","http://www.scopus.com/inward/record.url?eid=2-s2.0-2442430680&partnerID=40&md5=9e8ccd2d1254da07f5df425cbf209987",,,,,,"2",,"Informacion Tecnologica",,"69
74",,"15",,"Scopus",,,,,,"Asymptotic tunable observer; Biochemical reactors; Nonlinear systems; Simulation",,,,,,"A tunable asymptotic observer for biochemical reactors. Application to anaerobic digestion [Observador Asintético Ajustable para Reactores Bioquímicos: Aplicación a la Digestión Anaerobia]",,"Article" "40932","123456789/35008",,"Iñesta, E.R., University of Guadalajara, Zapopan, Mexico, University of Guadalajara, Center for Studies and Research on Behavior, PO Box 5-374, 45040 Zapopan, Mexico",,"Inesta, E.R.",,"2006",,"In 1985 the author proposed a theoretical taxonomy of behaviour functions that followed the interbehavioural field model developed by J. R. Kantor. The formulation of the taxonomy is an attempt to overcome logical, conceptual, and empirical limitations in prevailing behavioural approaches, especially operant theory. A molar analysis of behaviour is provided. In this paper, the author summarizes the main concepts and assumptions of this taxonomy, and describes some of the relevant methodological preparations and experimental data. The proposed interbehavioural field taxonomy (IF) consists of a classification of stimulus-response functions that describe the structural relations of a given behaviour segment. A behaviour segment consists of an organism interacting with stimulus objects and other organisms in a given setting. The behaviour segment contrasting with traditional conditioning framework includes categories with different logical functions. These categories are: (1) the interactive history, (2) the situational factors, (3) the medium of contact, (4) the field boundaries, and (5) the distinctions between object/organism, stimulus/response, and the stimulus-response function. Five general research programs are presented by the author: (1) basic research on animal behaviour, (2) complex human behaviour, (3) behavioural development processes, (4) extension to natural and social settings, (5) conceptual and theoretical analysis. Several experimental and theoretical developments are presented. " 2006 International Union of Psychological Science.
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