Now showing items 342-361 of 1475

    Determinación de la estructura del mercado y de las características del producto: Tres ensayos 

    Barreda Tarrazona, Iván (Date of defense: 2001-04-02)

    Esta tesis está organizada en tres ensayos de investigación que se pueden leer independientemente. En el primer ensayo estudiamos la actuación óptima de las autoridades de política de la competencia frente a distintos tipos ...

    Determinación de residuos de fungicidas en productos vegetales mediante técnicas cromatográficas avanzadas 

    Zamora Zamora, Tatiana Ivette (Date of defense: 2004-06-04)

    Atendiendo al creciente interés de Ecuador en el establecimiento de políticas para el control de residuos de plaguicidas debido al elevado uso de productos fitosanitarios en el tratamiento de enfermedades de diversos ...

    Determinación de residuos de plaguicidas problemáticos en productos vegetales y suelos mediante cromatografía-espectrometría de masas en tándem 

    Peruga Mínguez, Aránzazu (Date of defense: 2015-11-18)

    <p>Actualmente, el uso de productos fitosanitarios para proteger a los cultivos está muy extendido. La presencia de residuos de estos compuestos en productos alimentarios y en el medioambiente puede suponer un riesgo para ...

    Determinación experimental del balance hídrico del suelo y evaluación de la contaminación asociada a las prácticas agrícolas 

    Tuñón Colom, Juan (Date of defense: 2000-03-30)

    En este trabajo se aborda la problemática de la afección de la actividad agrícola sobre los recursos hídricos del acuífero de la Plana de Castellón, con énfasis en algunos aspectos que presentaban lagunas de conocimiento, ...

    Determinants of information and communication technologies for the online citizen participation adoption in urban contexts 

    Naranjo Zolotov, Mijail (Date of defense: 2018-11-29)

    This thesis contributes to a better understanding of the determinants of e-participation adoption in the urban contexts at individual level. The dissertation first carries out a review of the existing literature following ...

    Developing, Applying, and Testing FILMIP: the Filmic Metaphor Identification Procedure 

    Bort Mir, Lorena (Date of defense: 2019-05-09)

    The analysis and identification of figurative language is one of the largest research areas in cognitive linguistics, and metaphor is one of these tropes. This thesis develops The Filmic Metaphor Identification ...

    Development and Characterization of Electro- and Photo-Electrochemical Systems for High-Added-Value Products 

    Arcas Martínez, Ramon (Date of defense: 2023-05-04)

    The main challenge in the development of electrochemical and photoelectrochemical systems is the kinetics of the anodic oxygen evolution half-reaction (OER), which is intrinsically slow. For this reason, in this thesis all ...

    Development and validation of an online treatment program for adjustment disorders - Desarrollo y validación de un programa de tratamiento online para los trastornos adaptativos 

    Rachyla, Iryna (Date of defense: 2019-01-25)

    The results of the present thesis represent an important advance in the field of assessment and treatment of adjustment disorder, which is one of the most common but underresearched mental health problems. The work reports ...

    Development of a modelling tool to perform hydrodynamics coupled with biological processes in the secondary stage of wastewater treatment plants 

    Climent Agustina, Javier (Date of defense: 2019-12-20)

    Simulation models based on tools associated with computational fluid dynamics (CFD) and applied to wastewater treatment have been developed. The hydrodynamic effect of the internal elements that govern the flow behavior ...

    Development of advanced analytical methodologies based on gas chromatography coupled to mass spectometry for the determination of pops and vocs in the food and environmental field 

    Sales Martínez, Carlos (Date of defense: 2019-12-18)

    The work in this thesis has been clearly divided into three parts: In the first part, efforts were directed to obtaining a trace level quantification method for halogenated flame retardants using high-volume injections ...

    Development of Advanced Materials Based on Polymeric Ionic Liquids Formulated for Additive Manufacturing 

    Miralles-Comins, Sara (Date of defense: 2023-04-28)

    This thesis focuses on the design, development and characterisation of 3D printable materials based on polymeric ionic liquids. Additive manufacturing, commonly known as 3D printing, is a revolutionary set of technologies ...

    Development of High Temperature Heat Pumps for Industrial Waste Heat Recovery 

    Mateu Royo, Carlos (Date of defense: 2021-05-27)

    One of the major challenges of this decade is developing more sustainable energy systems that contribute to environmental concern, especially climate change mitigation. Extending the operating conditions of the heat pump ...

    Development of hybrid coatings for osseointegration improvement of metal dental implants 

    da Silva Barros, Sara Maria (Date of defense: 2016-12-20)

    Los implantes de titanio presentan comprobada biocompatibilidad no obstante carecen de propiedades osteoinductoras. Las estrategias actuales de modificación superficial de los implantes no resultan plenamente efectivas en ...

    Development of nanofluidst based on nanoencapsulated phase change materials 

    Navarrete Argilés, Nuria (Date of defense: 2020-06-23)

    The present thesis deals with the synthesis and characterisation of nanofluids including phase change materials as the nanoparticles. The main aim of the work is to develop new materials that suppose an improvement on the ...

    Development of New Hybrid Materials Based on Graphene Functionalised with Molecular Complexes. Evaluation of Properties and Catalytic Applications 

    Ventura Espinosa, David (Date of defense: 2020-07-10)

    En la presente tesis doctoral se ha descrito la síntesis de nuevos materiales híbridos basados en complejos organometálicos anclados mediante interacciones no covalentes sobre materiales derivados del grafeno. Los nuevos ...

    Development of perovskite optoelectronic devices on flexible substrates 

    Hassanabadi, Ehsan (Date of defense: 2022-03-08)

    In this thesis, first, the monolithic integration of a perovskite-based optical waveguide amplifier together with a photodetector on a nanocellulose substrate is shown to demonstrate the feasibility of a stretchable signal ...

    Development of transparent semiconductor oxides with optical properties for the functionalization of glass surfaces 

    González Cuadra, Jaime (Date of defense: 2023-12-15)

    The growing interest in semiconductor oxide thin films within materials science and engineering due to their unique physical, chemical, and electrical properties. These films, with thicknesses ranging from nanometers to ...

    Device Modelling of Perovskite Solar Cells using Small Perturbation Methods 

    Pulya Ravishankar, Sandheep (Date of defense: 2019-09-16)

    Perovskite solar cells (PSC) have emerged as an important player in the search for producing c1ean and renewable energy at high efficiencies. However, there exist several bottlenecks to maximise their efficiency and ...

    Déficit en el sistema motivacional aversivo en psicópatas subclínicos evaluados mediante el Psychopathic Personality Inventory-Revised (PPI-R) 

    López Penadés, Raúl (Date of defense: 2010-02-02)

    Tomando como marco teórico el reciente modelo triárquico de la psicopatía (Patrick, Fowles y Krueger, 2009), el objetivo de esta tesis doctoral es someter experimentalmente a prueba en psicópatas no encarcelados la hipótesis ...

    Diachasmimorpha longicaudata as Biological Control agent of the Mediterranean fruit fly, Ceratitis capitata: biotic and abiotic factors affecting its implementation in citrus crops of the Mediterranean basin 

    Harbi, Ahlem (Date of defense: 2017-02-24)

    Ceratitis capitata Wiedemann (Diptera: Tephritidae) is a cosmopolitan pest, originary from West-Africa, that has invaded almost all the temperate and tropical countries by the unwanted aid of the men. During its adaptation ...