Now showing items 1268-1287 of 1733

    Nanotecnología en el sector papelero: mejoras en calidad y permanencia de las fibras de alto rendimiento y secundarias en una economía circular mediante el uso de nanofibras y el refino enzimático 

    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 ...

    Narratives materials de l'àlbum il·lustrat. Una aproximació intermedial a la didàctica de la literatura 

    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 ...

    Natura i cultura en l'evolució del paisatge de closes a l'Alt Empordà (1957-2007) 

    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 ...

    New approaches for the study and treatment of aggressive cancers 

    Polonio Alcalá, Emma (Date of defense: 2023-05-17)

    Although there are therapies for triple negative breast cancer (TNBC) and epidermal growth factor-mutated non-small cell lung cancer (EGFRm NSCLC), these two subtypes of cancer are very aggressive, and most patients develop ...

    New carbocyclisations of polyunsaturated hydrazones catalysed by rhodium(I) 

    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 ...

    New challenges in Rh(I)-catalysed [2+2+2] cycloaddition reactions 

    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 ...

    New insights into boar sperm function and survival from integrated field and laboratory studies 

    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 ...

    New manganese complexes with nitrogen donor ligands. Catalysts for oxidation reactions 

    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 ...

    New medical registration and segmentation techniques using information-theoretic tools 

    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 ...

    New Methods for Triangulation-based Shape Acquisition using Laser Scanners 

    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 ...

    New mono- and dinuclear ruthenium complexes containing the 3,5-bis(2-pyridyl)pyrazole ligand. Synthesis, characterization and applications 

    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 ...

    New robustness evaluation mechanism for complex networks 

    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 ...

    New Ruthenium complexes containing N, P and S-donor type of ligands: coordination chemistry, characterization and application to asymetric and non-asymetric catalysis 

    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. ...

    New solutions to control robotic environments: quality control in food packaging 

    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 ...

    New tumour markers for pancreatic cancer based on the altered glycosylation of serum glycoproteins 

    Duran Sidera, Adrià (Date of defense: 2023-11-14)

    Pancreatic cancer (PaC) is the deadliest of all tumours, with a 5-year survival below 12% and a mortality/incidence ratio of 94.5%. One of the main reasons behind this dismal prognosis is the diagnosis of the disease at ...

    «Ninguna fou tan amada»: edició crítica i estudi de les giletes de Francesc Fontanella 

    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 ...

    Nitrate groundwater pollution and aquifer vulnerability: the case of the Osona region 

    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 ...

    Nitrifying and denitrifying bacterial communities in the sediment and rhizosphere of a free water surface constructed wetland 

    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 ...

    El nivell i la variació del risc cardiovascular en la prevenció primària de la demència 

    Fages Masmiquel, Ester (Date of defense: 2023-09-14)

    Dementia causes progressive cognitive impairment and inability to lead an independent life. Currently, there is no curative treatment for it, and thus primary prevention is essential. Age is the main risk factor for ...

    Nivells de vida, dinàmiques socials i canvi històric. L'àrea de Besalú, 1750-1850 

    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 ...