Now showing items 1663-1682 of 1771

    Theoretical studies of systems of biochemical interest containing Fe and Cu transition metals 

    Güell Serra, Mireia (Date of defense: 2009-07-30)

    La presència de la química teòrica i computacional està augmentant en quasi tots els camps de la recerca en química. Els càlculs teòrics poden ajudar a entendre millor l'estructura, les propietats i la reactivitat de ...

    Theoretical studies of the exohedral reactivity of fullerene compounds 

    Osuna Oliveras, Sílvia (Date of defense: 2010-03-26)

    Des del descobriment del buckminster ful.lerè el 1985, s'ha despertat un interés enorme per entendre la reactivitat química així com les propietats d'aquests compostos. La funcionalització exoèdrica del ful.lerè més abundant, ...

    Theoretical study of catalytic reactions of carbenes: haptotropic rearrangements and the Dötz reaction 

    Jiménez Halla, José Óscar Carlos (Date of defense: 2009-10-16)

    En aquesta tesi s'han estudiat mecanismes de reaccions de cicloanulació en carbens de Fischer a través de mètodes teòrics, concretament fent servir el nivell de teoria B3LYP/(Wachters' basis / 6-31G**). Els alcoxi- i amino ...

    Theoretical study of reactivity and dynamics of hybride-bridged diruthenium complexes and silylium 

    Tussupbayev, Samat (Date of defense: 2009-02-26)

    Esta tesis presenta un estudio computacional de los sistemas con hidruros puente. En la primera parte se estudia la química de complejos de dirutenio con cuatro hidruros puente. Esto incluye las siguientes reacciones: el ...

    Theoretical study of water oxidation and reduction mechanisms by aminopyridine first row transition metal catalysts 

    Acuña-Parés, Ferran (Date of defense: 2016-07-20)

    One of the major current scientific goals is the development of renewable energy sources. An effective alternative to fossil fuels consists in the conversion of the sunlight energy into chemical fuels. The molecular hydrogen ...

    Therapeutic potential of pituitary adenylate cyclase-activating polypeptide and epigallocatechin gallate in motor and cognitive deficits of Huntington's disease models 

    Cabezas Llobet, Núria (Date of defense: 2019-02-28)

    Huntington's disease (MH) is a progressive neurodegenerative disorder characterized by a motor dysfunction, cognitive impairment, and psychiatric symptoms. At neuropathological level, it has been described that cognitive ...

    Three bibliometric analysis articles on the application of compositional analysis theory (CoDa) in the social science 

    Navarro-López, Carolina (Date of defense: 2022-11-14)

    Compositional data analysis is a recently applied methodology with great potential for expansion in multiple scientific disciplines.This doctoral thesis aims to help the dissemination and transfer of knowledge about the ...

    Three essays on hard skills, soft skills, risk attitudes and entrepreneurship 

    Correa Pinzón, John Enrique (Date of defense: 2022-11-18)

    This thesis studies the effects of hard skills and soft skills and risk attitudes on the likelihood of starting a company in the US. Hard skills are those skills that can be learned and trained. They are cognitive in nature. ...

    Three essays on housing economics: the impact of COVID-19 on short-, medium- and long-term rental housing 

    Llaneza Hesse, Catalina (Date of defense: 2023-12-19)

    This dissertation evaluates the pandemic's impact on three coexisting urban rental markets: traditional long-term rentals (LTR), short-term rentals (STR) primarily catering to tourists, and seasonal month-by-month rentals ...

    Time misalignments in fault detection and diagnosis 

    Llanos Rodríguez, David Alejandro (Date of defense: 2008-10-17)

    El desalineamiento temporal es la incorrespondencia de dos señales debido a una distorsión en el eje temporal. La Detección y Diagnóstico de Fallas (Fault Detection and Diagnosis-FDD) permite la detección, el diagnóstico ...

    Tools for 3D point cloud registration 

    Roure Garcia, Ferran (Date of defense: 2017-03-08)

    In this thesis, we did an in-depth review of the state of the art of 3D registration, evaluating the most popular methods. Given the lack of standardization in the literature, we also proposed a nomenclature and a ...

    Tornar. Els paisatges de la inquietud en la narrativa catalana de principis del segle XXI 

    Puig Parnau, Maria (Date of defense: 2020-03-06)

    This dissertation is built on the basis that during the first decades of the twenty-first century, it has appeared a diverse corpus of Catalan prose-works characterized by a new representation of both the imaginary and the ...

    Tourism demand in Spain: trip duration and budget structure, a comparison of low cost and legacy airline users 

    Ferrer Rosell, Berta (Date of defense: 2014-05-27)

    This thesis compares the behaviour of tourists arriving to Spain by low cost airlines or by legacy airlines, in terms of length of stay and travel budget allocation. It also segments low cost users according to travel ...

    Tourism destination zoning and governance in border regions 

    Blasco Franch, Daniel (Date of defense: 2014-01-27)

    Debates on the creation and management of tourism destinations have increased during the last decades. This dissertation endeavours to contribute to the literature on tourism destinations planning and governance, with ...

    Tourist behavior in a cross-border area: the case of Nicosia, Cyprus 

    Díaz Sauceda, Judit (Date of defense: 2016-07-13)

    Tourists are crossing borders naturally when consuming an area. Therefore, cross-border tourism studies are gaining relevance. A qualitative analysis showed the lack of research on cross-border tourism from the demand side. ...

    Towards a high-performance computing finite element simulation framework for virtual testing of composite structures 

    Quintanas Corominas, Adrià (Date of defense: 2019-10-11)

    his doctoral thesis aims at developing and implementing a computational framework for performing virtual testing of composite structures using a High-Performance Computing (HPC) environment. In this sense, this thesis ...

    Towards better management of combined sewer systems. A methodology based on low-cost monitoring 

    Montserrat Royuela, Albert (Date of defense: 2015-07-03)

    In combined sewer systems (CSS) wastewater and stormwater flow through the same pipes. During severe rain episodes, the excess combined flow of untreated wastewater and stormwater is released out from the system through ...

    Towards socially sustainable smart cities: observations and potentials from digitizing participatory planning 

    Bouzguenda, Islam (Date of defense: 2021-02-01)

    This thesis contributes to the current debate on the relationship between the participation of digital citizens in urban planning and social sustainability within the framework of the smart city concept. Recent studies ...

    Towards the implementation of a biotechnology for biogas upgrading: role of bacteria in siloxane removal 

    Boada Cahueñas, Ellana (Date of defense: 2020-07-20)

    Biogas is a highly recognized alternative to fossil fuels towards a sustainable energy production. Massive use of biogas depends on the removal of contaminants that may affect performance of processing equipment and energy ...

    Towards the implementation of ecosystem management: a multi-level assessment of a small scale Mediterranean multi-specific fishery 

    Dimitriadis, Caterina (Date of defense: 2015-10-16)

    Fisheries are complex systems, in which the process of assessment and management should explicitly consider the ecological, social and economic attributes of the system. For a responsible and sustainable management of ...