Optimal Multimodel Representation by Laguerre Filters Applied to a Communicating Two Tank System

This paper presents the development of a new nonlinear representation by exploiting the multimodel approach and the new linear representation ARX-Laguerre for each operating region. The resulting multimodel, entitled ARX-Laguerre multimodel, is characterized by the parameter number reduction with a recursive representation. However, a significant reduction of this multimodel is subject to an optimal choice of Laguerre poles characterizing each local linear model ARX-Laguerre. Therefore, the authors propose an optimization algorithm to estimate, from input/output measurements, the optimal values of Laguerre poles. The ARX-Laguerre multimodel as well as the proposed optimization algorithm are tested on a continuous stirred tank reactor system (CSTR). Moreover, the authors take into account a practical validation on an experimental communicating two tank system (CTTS).     

Keratinases: Hydrolysis of keratinous substrates by three enzymes ofTrichophyton mentagrophytes

Zusammenfassung Drei Keratinasen die von einem zoophilen Dermatophyten,Trichophyton mentagrophytes, isoliert wurden, haben eine ausgeprägtere hydrolytische Wirkung auf Keratine tierischen Ursprungs als solche menschlicher Herkunft.