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The sulfuric acid leaching of Bayer electrofilter fines: A practical kinetical approach

Autor: Espina J. Ayala, Alonso D. Costales, Pérez Fernández, M. P. García Coque, J. P. Sancho Martínez

Publikováno v: JOM. 58:58-62

Electrofilter fines, which are by-products of the Bayer process for the production of alumina from bauxite, were characterized to evaluate the alumina that was potentially extractable with sulfuric acid. Acid leaching is carried out at different conc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8cd0738b64b9949f70d9a92b5a6414a8
https://doi.org/10.1007/s11837-006-0055-3

Review of anti-windup strategies for PI speed controllers in field oriented control of permanent magnet synchronous machines

Autor: Espina, J., Antoni Arias, Balcells, J., Ortega, C.

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
Scopus-Elsevier

The work presented in this paper addresses the unwanted windup phenomenon reviewing and comparing different PI anti-windup strategies employed in speed control of electric drives. The tuning process of PI controllers is usually carried out considerin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6fc2384d7e16fc9ddd874ad2a1881f53
http://hdl.handle.net/2117/11026

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Géodynamique andine : résumés étendus = Andean geodynamics : extended abstracts = Geodinamica andina : resumenes ampliados

Autor: Carrizo, D., Gonzalez, G., Cembrano, J., Yanez, G., Jensen, A., Espina, J., Andronico, J.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______932::680c659953a24b1137f3881147b98db6
http://www.documentation.ird.fr/hor/fdi:010040196