Now showing items 1686-1705 of 1900

    Síntesi, caracterització i avaluació com a catalitzadors de nous complexos quirals de platí 

    Duran i Carpintero, Josep (Date of defense: 1999-07-22)

    The oxidative addition proved to be a useful method to prepare platinum (II) hydridotiolate by reaction of tetrakis(triphenylphosphine)platinum(0) with aminothiolate and phosphinothiolate ligands like cysteamine, cysteine ...

    Síntesi, caracterització química i estudi de l'activitat biològica de nous complexos de Pt(II) amb lligands de tipus diaminocarboxílic i els respectius ésters i derivats peptídics 

    Moradell Rabert, Sílvia (Date of defense: 2002-12-13)

    El cisplatí, PtCl2(NH3)2, ha estat una de les drogues més utilitzades en la quimioteràpia del càncer des del descobriment de la seva activitat. Però degut a la seva alta toxicitat i greus efectes secundaris, s'han sintetitzat ...

    Síntesi, estructura i reactivitat de nous complexos de Cu, Ag i Ni contenint lligands triazamacrocíclics. Aplicacions en l'activació d'enllaços 

    Xifra Garcia, Raül (Date of defense: 2005-01-28)

    · S'ha preparat i caracteritzat una família de complexos de Cu(III) contenint lligands triazamacrocíclics, estudiant-se les seves propietats estructurals, espectroscòpiques i redox. Aquesta àmplia família de complexos tenen ...

    Síntesis y caracterización de materiales poliméricos para la separación no cromatográfica de metales nobles. Separación y determinación de iridio mediante cromatografía líquida y electroforesis capilar 

    Sánchez Navarro, Juan Manuel (Date of defense: 1999-03-17)

    For the selective separation of Noble Metals, different new chelating polymers with the same functional group, based on tri-isobutylphosphine sulphide, have been synthesised. Different spacers between the polymeric matrix ...

    Small-molecule mimics of rieske oxygenases. Application to selective aliphatic C-H hydroxylation and olefin syn-dihydroxylation 

    Borrell Recasens, Margarida (Date of defense: 2021-11-05)

    Oxidations are an important kind of reactions which are traditionally performed using stoichiometric oxidants that generate a large amount of waste. Syn-dihydroxylation of alkenes is a paradigmatic example because it is ...

    Smarter urban planning through a citizen-based approach. The Smart urban planning method 

    Marsal, Maria Lluïsa, 1974- (Date of defense: 2013-11-15)

    In this dissertation we propose an objective method for updating traditional urban planning methodologies based on input from citizens regarding their current and future urban requirements. Specifically, our methodology ...

    SMT techniques for planning problems 

    Espasa Arxer, Joan (Date of defense: 2018-11-15)

    Automated planning is a discipline in the field of Artificial Intelligence that can be described as the process of finding a course of action that achieves a specified task. In other words, it focuses on reasoning about ...

    Sobre el lloc de la filosofia en la societat de la informació i del coneixement 

    Sarsanedas Darnés, Anna (Date of defense: 2007-01-17)

    La tesi defensa la transmutació de la filosofia en la societat de la informació i del coneixement, tant pel que fa referència als nous espais d'aplicació, com als dels temes objecte d'estudi i els mètodes a seguir en la ...

    Sobre la forma de los arbotantes en las fábricas góticas 

    Samper Sosa, Albert (Date of defense: 2024-01-25)

    Flying buttresses have been extensively studied from a mechanical, constructive or descriptive point of view. The references on its geometric aspects are practically scarce and unfortunately, we have to go back to 1854 to ...

    Sobre las normas irregulares: un aspecto de la realidad jurídica 

    Chahuan Zedan, Marcela (Date of defense: 2017-03-10)

    This doctoral thesis is an analysis of irregular norms, that is to say, norms which do not comply with the conditions for creation of norms established by the law-making rules of a legal system. The aim of this research ...

    Sobre poesia visual: aprenent a llegir davant les línies 

    Masgrau Juanola, Mariona (Date of defense: 2011-04-27)

    This research examines the nature of visual poetry and its educational potential in the processes of teaching and learning reading and writing in primary education. The first part looks into the internal and external logic ...

    Social exclusion and eudaimonic well-being: a children's perspective 

    Crous Parcerisas, Gemma (Date of defense: 2018-03-15)

    The main objective is to explore eudaimonic well-being (PWB) and social exclusion from children’s and adolescents’ perspective and the associations between these constructs and with other related ones such as hedonic ...

    Social networks and performance in knowledge creation. An application and a methodological proposal 

    Coromina Soler, Lluís (Date of defense: 2006-04-24)

    El objetivo de esta tesis es predecir el rendimiento de los estudiantes de doctorado en la Universidad de Girona según características personales (background), actitudinales y de redes sociales de los estudiantes. La ...

    Social Sales: una nueva manera de intermediación turística online 

    Caparrós Vicente, Ana Belén (Date of defense: 2019-02-15)

    The evolution of tourism has experienced different circumstances due to changes in the tourism intermediation system. These changes occurred since the beginning of modern tourism. One of the cyclic changes was the introduction ...

    Les societats ibèriques de la Hispània Citerior durant els primers anys de romanització (218-133 AC) 

    Vivo i Llorca, Jordi (Date of defense: 2016-02-09)

    El principal objectiu de la tesi és analitzar la societat de l’àrea ibèrica de la província Hispània Citerior en el transcurs dels primers vuitanta-cinc anys de presència romana (218-133 aC). Si bé aquest és un tema que ...

    Socioeconomic status determines floristic patterns in suburban domestic gardens: implications for water use and alien plant dispersal in the Mediterranean context 

    Padullés Cubino, Josep (Date of defense: 2015-07-23)

    The recent growth of low-density urban developments in the Mediterranean coast has led to an increase in the number of private domestic gardens. This thesis examines the flora, features and management practices of 258 ...

    Soil and vegetation carbon dynamics (stocks and fluxes) and litter decomposition in a Mediterranean non-tidal salt marsh 

    Carrasco Barea, Lorena (Date of defense: 2020-10-09)

    Salt marshes are considered key ecosystems for climate regulation because they have a high carbon sequestration capacity. However, most studies of carbon sequestration capacity of these ecosystems have been performed in ...

    Solid-phase synthesis of 5-arylhistidine-containing peptides: from linear antimicrobial peptides to cyclic peptides derived from arylomycins and aciculitins 

    Ng Choi, I-teng Montserrat (Date of defense: 2015-12-15)

    The incorporation of unsymmetrical biaryl systems into peptide sequences is a strategy that can improve their biological activity. Due to the difficulty of arylating the 4(5}-position of the imidazole ring, this doctoral ...

    Solid-phase synthesis of cell-penetrating γ-peptide/antimicrobial peptide conjugates and of cyclic lipodepsipeptides derived from fengycins 

    Rosés Subirós, Cristina (Date of defense: 2016-01-22)

    This thesis is focused on the development of synthetic approaches to obtain new bioactive peptides. The first part deals with the design of new antimicrobial peptide/cell-penetrating peptide conjugates as anticancer agents. ...

    Sonar scan matching for simultaneous localization and mapping in confined underwater environments 

    Mallios, Angelos (Date of defense: 2014-05-15)

    This thesis presents the development of a localization and mapping algorithm for an autonomous underwater vehicle (AUV). It is based on probabilistic scan matching of raw sonar scans within a pose-based simultaneous ...