Now showing items 173-192 of 230
Pavón Regaña, Sandra (Date of defense: 2019-11-28)
Nowadays, rare earth elements (REEs) have gained importance due to their indispensable and critical use in many high-tech industries like hybrid cars, fluorescent lamps, flat screen televisions, mobile phones, disc drives ...
Sequeira, Sebastián Eloy (Date of defense: 2003-07-15)
En general, el control de procesos es muy eficiente cuando el punto de operación deseado ha sido determinado a priori y el sistema tiene capacidad suficiente para responder a las perturbaciones. Mientras el control de ...
Montenegro Landivar, María Fernanda (Date of defense: 2022-09-21)
The residues resulting from orange and spinach processing, composed mainly by peels and seeds; and leaves, respectively, contain relevant amounts of polyphenols, so they can be used as raw material for recovery natural ...
Demey Cedeño, Hary (Date of defense: 2014-11-25)
The growing concern over environmental pollution in recent decades has placed increasing focus on research into the development of sustainable processes associated with the removal of contaminants in waters. Water is scarcer ...
Canudas Ventura, Miquel (Date of defense: 2020-07-24)
The leather manufacturing process consists of a sequence of complex chemical reactions and mechanical processes that allow turning skin, a putrefiable by-product of alimentary industry, into leather, a stable high-value-added ...
Dalmoro, Viviane (Date of defense: 2013-11-04)
The aluminum alloy AA2024-T3, u sed extensively in the aerospace industry, dueto the heterogeneous microstructures intentionally designed to optím ize the m echanical properties, is very susceptible to localízed corros ...
Foroughi, Vahid (Date of defense: 2023-09-20)
(English) The historical analysis performed has shown that jet fires have been the origin of a high number of domino effect accidents, both in the process industry and in the transportation of flammable fluids by pipelines ...
García Cobos, David Manuel (Date of defense: 2018-09-20)
The most widely accepted option for the long-term management of radioactive waste materials considers their disposal in deep underground facilities (examples are Finland, Belgium, France, Sweden, etc.). Such installations ...
Basco Montia, Josep (Date of defense: 2016-02-01)
Chemical plants and other industrial installations process and store hazardous materials, which represent a certain risk to people, equipment and the environment. Overpressure is one of the most common upsets in process ...
Mayans Tayadella, Enric (Date of defense: 2017-12-18)
Since the pioneering work of Reches and Gazit in 2003, in which the formation of diphenylalanine (FF) nanotubes in aqueous solution was discovered, significant efforts have been made to develop a new generation of biomaterials ...
Arespacochaga Santiago, Nicolás de (Date of defense: 2015-12-18)
A more sustainable and secure energy supply is required for the forthcoming generations; where the actual dependence on the fossil fuel reserves should be replaced by self-sufficiency and use of renewable energy resources. ...
Zanuy Gómara, David (Date of defense: 2001-05-28)
Los objetivos que se persiguen la memoria presentada puede desglosarse en dos grandes bloques temáticos, los cuales están estrechamente relacionados.<br/><br/>1) El estudio conformacional y estructural de diferentes ...
Cifuentes López, Alejandro (Date of defense: 2023-01-19)
(English) This thesis focuses on the study of the catalytic production of hydrogen from methanol and water. Catalytic production is carried out in a catalytic membrane reactor which manages to produce and purify hydrogen. ...
Armelín, Elaine (Date of defense: 2002-04-26)
"Síntesis y caracterización de nuevas poliesteramidas: estudio de sus propiedades."<br/><br/>El estudio de los polímeros biodegradables ha adquirido un gran interés en los últimos años por ser una alternativa al reciclado ...
Bou Serra, Jordi (Date of defense: 1994-07-03)
Con la finalidad de obtener nuevos materiales de altas prestaciones a partir de recursos naturales, la memoria de la tesis "Síntesis y caracterización de poliamidas derivadas del ácido tartárico", presentada por Jordi Bou ...
Majó Roca, Mª Antonia (Date of defense: 2003-04-03)
Dicho trabajo de investigación se basa en la preparación, caracterización y evaluación de propiedades de poliamidas derivadas de la L-lisina y de los ácidos L y D tartáricos, con posibilidades de utilización como polímeros ...
Ortega Marín, María del Carmen (Date of defense: 2016-01-25)
En esta tesis se sintetiza y caracteriza un nuevo polímero basado en el biimidazol, el poli[4-4'(p-fenilen)-2,2'bi-1H-imidazol] (PBII), con el objetivo de evaluar su viabilidad como polímero conductor en membranas de pilas ...
Franco García, Ma. Lourdes (María Lourdes) (Date of defense: 1994-10-14)
Se han sintetizado nylons 1,n (n=5,6,7,8,10 y 12); nylons 2/n estadísticos con distintas proporciones de glicina (n=6, 11 y 12) y nylons m,n (m=6,12; n=6) con glicina incorporada secuencialmente y al azar. Los productos ...
Martínez Palau, Meritxell (Date of defense: 2008-04-16)
La creciente demanda de materiales biodegradables para su utilización en el campo de la biomedicina ha incrementado el interés en la síntesis de nuevos polímeros. Los poliésteres alifáticos constituyen el grupo de polímeros ...
Lopes Rodrigues, Maximilien (Date of defense: 2019-11-11)
This thesis focuses on the preparation of nanomaterials made of proteins and polymers. Even though the technology has advanced in the last decades to design new devices at the atomic scale, researchers are still inspired ...