Now showing items 1192-1211 of 1627
Delgado Aguilar, Marc (Date of defense: 2015-07-31)
Bio and nano technologies are absent or incipient in papermaking industry and, concretely, in recycling and high-yield pulps sectors. In this sense, the present Thesis uses cellulose nanofibers (CNF), both in bulk and on ...
Kunde, Karo (Date of defense: 2021-11-19)
Intermediality is a cultural reality: in the multimodal and multimedia era, hybridization between media is a common practice, which we find in almost any communicative product and which requires specific knowledge to be ...
Llausàs i Pascual, Albert (Date of defense: 2008-06-19)
La tesi doctoral és un estudi de l'evolució del paisatge de les closes de l'Alt Empordà entre els anys 1957 i 2001. Dins el marc teòric s'hi explora el concepte de paisatge cultural agrari tradicional, es fa una introducció ...
Torres Antón, Òscar (Date of defense: 2017-02-24)
Some of the most powerful methods for synthesizing complex organic molecules with high levels of chemo-, diastereo- and enantioselectivity rely on metal carbene chemistry. These compounds are versatile reaction intermediates ...
Fernández Wang, Martí (Date of defense: 2017-07-20)
This doctoral thesis studies the involvement of challenging unsaturated substrates in the transition-metal catalysed [2+2+2] cycloaddition reaction, as well as new catalytic systems for the reaction. First, Morita-Baylis-Hillman ...
Yeste Oliveras, Marc (Date of defense: 2008-12-17)
En aquesta tesi s'han dut a terme dos tipus d'estudis diferents. L'objectiu del primer era la preservació del semen de porcí a 15ºC i el del segon eren els co-cultius homòlegs de cèl·lules epitelials de l'oviducte i ...
Rich Masallera, Jordi (Date of defense: 2012-06-08)
The catalytic asymmetric oxidation of alkenes has special interest from both industrial and academic points of view. For this reason, catalysts able to perform these reactions in a faster and more effective manner have ...
Bardera i Reig, Antoni (Date of defense: 2008-11-20)
El processament d'imatges mèdiques és una important àrea de recerca. El desenvolupament de noves tècniques que assisteixin i millorin la interpretació visual de les imatges de manera ràpida i precisa és fonamental en entorns ...
Forest Collado, Josep (Date of defense: 2004-12-11)
Tradicionalment, la reproducció del mon real se'ns ha mostrat a traves d'imatges planes. Aquestes imatges se solien materialitzar mitjançant pintures sobre tela o be amb dibuixos. Avui, per sort, encara podem veure pintures ...
Sens Llorca, Cristina (Date of defense: 2005-03-17)
Se han sintetizado dos nuevos complejos mononucleares de Ru, con formula [RuCl2(Hbpp)(dmso)2], a partir de la reacción entre [RuCl2(dmso)4] y Hbpp (3,5-bis(2-piridil)pirazola). El hecho que sólo tres de los seis posibles ...
Manzano Castro, Marc (Date of defense: 2014-11-20)
Network science has significantly advanced in the last decade, providing insights into the underlying structure and dynamics of complex networks. Critical infrastructures such as telecommunication networks play a pivotal ...
Sala Román, Xavier (Date of defense: 2007-03-16)
Síntesi de nous complexos de Ruteni amb lligands no quirals que tenen per fórmula [Ru(phen)([9]aneS3)X] (on X = H2O, py i MeCN). Caracterització espectroscòpica electroquímica i estructural d'aquesta família de complexos. ...
Banús Paradell, Núria (Date of defense: 2021-12-16)
Machine vision systems and artificial intelligence techniques are two active research areas in the context of Industry 4.0. Their combination allows the reproduction of human procedures while improving the performance ...
Castaño Trias, Marta (Date of defense: 2018-01-10)
Francesc Fontanella wrote seventy-seven love poems dedicated to Gileta, the pseudonym used for Maria Teresa Ham, and these are generally grouped together under the title giletes. They make up the part of the ...
Boy Roura, Mercè (Date of defense: 2013-10-04)
Nitrate groundwater pollution in the Osona region is a persistent and widespread problem. Nitrate concentrations are commonly above the drinking water threshold of 50 mg/L in wells and springs. ANOVA and logistic regression ...
Ruiz Rueda, Olaya (Date of defense: 2008-06-27)
La contínua descàrrega de nutrients, sobretot fosfats i nitrogen, és la major causa d'eutrofització dels ecosistemes aquàtics. Els sistemes de tractament basats en aiguamolls construïts s'han emprat per reduir ells nivells ...
Serramontmany, Albert (Date of defense: 2016-02-08)
This thesis researches the rural uplands district of Besalú from 1750 to 1850. The thesis emphasizes how Besalú area achieved a high level of population in spite of apparent limitations in agriculture through the integration ...
Serra Navarro, David (Date of defense: 2012-06-19)
The virtual worlds realms constitute a new space for exploration in which new forms of communication, production and consumption are generated. The presence of these platforms, based on social interaction, is becoming a ...
Kabeel, Abdallah Mahmoud Bayoumi (Date of defense: 2015-04-15)
The main contribution of this work is to introduce analytical models able to create simple design charts that would allow designers to quickly determine the strength of quasi-brittle structures containing circular holes. ...
Costa Carreras, Joan (Date of defense: 2005-11-24)
L'objectiu general de la tesi és analitzar els objectius i les hipòtesis de què Pompeu Fabra (1891-1948) va partir en la codificació de la sintaxi del català i la metodologia que va fer servir. Per fer-ho s'ha identificat, ...