Now showing items 55-74 of 222

    Contribution to the development of hydrometallurgical separation and concentration techniques focused on precious metals recovery 

    Rovira, Miquel (Rovira Boixaderas) (Date of defense: 1998-03-02)

    Aquesta Tesi Doctoral es centra en la recuperació de metalls precisos presents en dissolucions d'àcid clorhñidric, per mitjà de tècnqiues tant emergents com ben establertes basades en els principis de la tecnologia d'extracció ...

    Contribution to the Optimization and Flexible Management of Chemical Processes 

    Ferrer Nadal, Sergio (Date of defense: 2008-06-19)

    La industria química ha experimentado en las últimas décadas un aumento en la competencia por la cual las empresas se ven obligadas a adaptarse a un mercado cambiante y cada vez más exigente. Aunque la globalización ha ...

    Contribution to the study of boiling liquid expanding vapor explosions and their mechanical effects 

    Hemmatian, Behrouz (Date of defense: 2016-07-18)

    Boiling Liquid Expanding Vapor Explosions keep occurring from time to time in process plants, storage areas and transportation by road or rail, often with severe effects. There is no doubt that a better knowledge of their ...

    Contribution to the Study of Heterogeneous Catalytic Reactions in SCFs: Hydrogenation of Sunflower Oil in Pd Catalysts at Single‐Phase Conditions. 

    Ramírez Rangel, Eliana (Date of defense: 2005-12-10)

    La hidrogenación es uno de los procesos químicos industriales más importantes. Una amplia variedad de productos químicos es obtenida mediante la hidrogenación catalítica. <br/>Uno de los procesos típicos de hidrogenación ...

    Contributions to the risk assessment of major accidents in port areas 

    Ronza, Andrea (Date of defense: 2007-11-22)

    Esta tesis se presenta como un conjunto de artículos (ya publicados en revistas internacionales, con la excepción del Artículo 6) precedidos por una serie de capítulos introductorios. 1. Introducción. Describe los puertos ...

    Crystallization, processing and applications of new polyesters 

    Díaz, Angélica (Date of defense: 2015-05-06)

    Poly(alkylene dicarboxylate)s constitute a family of biodegradable polymers with increasing interest for both commodity and speciality applications. The most of these polymers can be prepared from biobased diols and ...

    Crystallographic study on oligonucleotide coiled-coils 

    Luchi, Daniela de (Date of defense: 2008-07-25)

    En la presente tesis doctoral se han realizado estudios estructurales de DNA. Estudios previos han demostrado que los coiled-coils de d(ATATATATATAT) y d(ATATATATAT) tienen unos parámetros geométricos muy diferentes. El ...

    Cyclic derivatives of D-glucose and tartaric acid as building blocks for renewable polyesters 

    Japu, Cristina (Date of defense: 2014-11-21)

    Three series of aromatic copolyesters derived from poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT) and poly(hexamethylene terephthalate) (PHT) have been synthesized by melt polycondensation in which ...

    Data driven methods for updating fault detection and diagnosis system in chemical processes 

    Ardakani, Mohammad Hamed (Date of defense: 2018-07-23)

    Modern industrial processes are becoming more complex, and consequently monitoring them has become a challenging task. Fault Detection and Diagnosis (FDD) as a key element of process monitoring, needs to be investigated ...

    Data Reconciliation as a Framework for Chemical Processes Optimization and Control 

    Benqlilou, Chouaib (Date of defense: 2004-04-28)

    This thesis presents, discusses and compares a set of methodologies and several appropriate combinations of them, to provide accurate estimation of process variables, either for steady-state or dynamic systems. <br/><br/>Firstly, ...

    Decision support strategies for the efficient implementation of circular economy principles in process systems 

    Somoza Tornos, Ana (Date of defense: 2020-03-26)

    Economic growth at any expense is no longer an option. Awareness of the growing human footprint is crucial to face the problems that the impoverishment of ecosystems is causing and will cause in the future. One of the key ...

    Degradation of organic compounds in paper and testile industrial wastewaters by advanced axidation processes 

    Pérez Moya, Montserrat (Date of defense: 2001-11-16)

    Les activitats de recerca destinades a la solució dels problemes de contaminació de les aigües estan patint un fort increment en els darrers anys. <br/><br/>Entre les indústries més contaminants, cal esmentar la tèxtil i ...

    Del mur romànic al museu. La tècnica de la pintura mural romànica i del seu traspàs amb morters de caseïna 

    Oriols Pladevall, Núria (Date of defense: 2022-11-17)

    (English) An important collection of Romanesque wall paintings, detached from their original places at the beginning of the 20th century, is now preserved and exhibited in the Museu Nacional d'Art de Catalunya. To define ...

    Derivados del Nylon 3 con grupos laterales alcoxicarbonilos ramificados y cíclicos 

    García Álvarez, Montserrat (Date of defense: 1997-03-07)

    El presente trabajo se ha centrado en la síntesis, caracterización y estudio estructural de poli(alfa-alquil-beta-L-aspartato)s con grupos laterales ramificados y cíclicos.<br/><br/> Se han sintetizado los monómero: ...

    Desarrollo de métodos de electroforesis capilar en fase micelar. Aplicación al análisis de herbicidas y de sus productos de degradación 

    Ruiz Marrondo, Santiago (Date of defense: 2001-10-02)

    La Electroforesis Capilar en Fase Micelar (MECC) es una nueva técnica de separación desarrollada a partir de la Electroforesis Capilar en Zona (CZE) y basada en principios tanto cromatográficos como electroforéticos, capaz ...

    Design and analysis of dual-curing systems 

    Konuray, Ali Osman (Date of defense: 2018-09-17)

    Dual-curing processing is a method to prepare thermoset materials through two polymerization reactions carried out simultaneously or sequentially. In these processes, a firm understanding of reaction mechanisms enables ...

    Design and bioapplication of nanointerfaces based on conducting polymers 

    Pérez Madrigal, Maria del Mar (Date of defense: 2015-07-03)

    This Thesis reports the fabrication and characterization of interfaces based on conducting polymers (CPs), which are designed with at least one dimension in the nanometric scale, for bioapplications such as scaffolds for ...

    Design optimization of storage terminals through the application of QRA 

    Bernechea, Esteban (Date of defense: 2013-09-19)

    The storage of hazardous materials is a necessary part of the life cycle and operation of any process plant, which intrinsically entails certain hazards and dangers. The results of historical analysis reveal that 17% of ...

    Design, synthesis, characterization and development of novel organic conducting polymers with technological applications 

    Aradilla Zapata, David (Date of defense: 2013-01-11)

    In this thesis, a series of novel organic conducting polymers have been synthesized using alternative methods based on electrochemical techniques, which have allowed to broaden the knowledge in the field of the characterization ...

    Desulfuración de gas de síntesis a alta temperatura y presión por absorción en óxidos regenerables 

    Perales Lorente, José Francisco (Date of defense: 2002-04-04)

    DE LA TESIS<br/><br/>Es una contribución al desarrollo de un nuevo método de purificación de gas de síntesis en plantas IGCC, que posibilita un incremento de la eficiencia energética de las plantas de obtención de energía, ...