Now showing items 21-40 of 341

    Analysis of the ocean dynamics in a wind-jet region using high-resolution models 

    Ràfols Bundó, Laura (Date of defense: 2018-09-13)

    The water currents and the wave field at the Catalan coast (in the Northwestern Mediterranean Sea) are investigated. However, the main research is focused at the northern margin of the Ebro Shelf, where there is a relatively ...

    Analysis of underground excavations in argillaceous hard soils : weak rocks 

    Mánica Malcom, Miguel Ángel (Date of defense: 2018-10-11)

    Materiales arcillosos rígidos, que se encuentran en la zona de transición entre suelos duros y rocas blandas, están siendo considerados actualmente en varios países como la roca huésped para el almacenamiento geológico ...

    Análisis composicional del acceso a servicios de agua, saneamiento e higiene y medida de sus desigualdades 

    Quispe Coica, Filimon Alejandro (Date of defense: 2021-12-14)

    Access to water, sanitation and hygiene (WASH) services is closely linked to public health. The benefits of having safe WASH are vast. The WHO/UNICEF Joint Monitoring Program (JMP) estimates of the population accessing ...

    Análisis de ciclo de vida de sistemas innovadores de almacenamiento eléctrico en litio-azufre (Li-S) para vehículos 

    Benveniste Pérez, Gabriela (Date of defense: 2021-03-05)

    The continuous and expected increase of electrification in the transport sector, the so-called "electromobility" revolution, is one of the main drivers of progress in energy storage for vehicle propulsion. Today's electric ...

    Análisis estructural probabilista orientado a evaluación del daño sísmico con aplicaciones a tipologías constructivas empleadas en Costa Rica 

    Hidalgo Leiva, Diego (Date of defense: 2017-01-30)

    The damage assessment of structures under seismic actions, must seek the implementation of new theories, tools and procedures that reduce the uncertainty associated to the expected structural response of a building. This ...

    Análisis estructural probabilista orientado a evaluación del daño sísmico de edificios de mampostería no reforzada: aplicación a edificios aislados y agregados del distrito del Ensanche de Barcelona 

    Ávila Haro, Jorge Arturo (Date of defense: 2021-07-01)

    Despite the fact that masonry is one of the oldest and most used building materials, the number of existing studies and experimental data, as well as the applicability of its results (i.e. extrapolation), are substantially ...

    Análisis estructural sísmico de edificios de acero : un enfoque probabilista 

    Díaz Alvarado, Sergio Alberto (Date of defense: 2017-09-18)

    The main objective of this thesis is the probabilistic assessment of the expected seismic damage in steel buildings located in Mexico City. Although a deterministic analysis is performed both, seismic actions and buildings, ...

    Análisis numérico termo-mecánico y termo-higrométrico del hormigón expuesto a altas temperaturas 

    Rodríguez Frete, Mariana (Date of defense: 2020-12-16)

    Concrete is one of the most used materials in construction, and its application spans to all kinds of structures. For this reason, concrete has been the subject of intense study. In spite of that, there are still apects ...

    Análisis THM de la interacción suelo-atmósfera en suelos arcillosos sometidos a desecación 

    Cuadrado Cabello, Agustín (Date of defense: 2019-03-07)

    Coupled processes between the soil and the atmosphere control soil water evaporation in its first stage, which leads to soil shrinkage and cracking by drying. However, soil-atmosphere interaction has received little attention ...

    Aplicación de MALDI-TOF Imaging y HPLC-MS/MS al estudio de la degradación del polímero policaprolactonadiol en diferentes medios acuáticos 

    Rivas Becerra, Daniel (Date of defense: 2017-11-20)

    Water is essential for life, human activities and ecosystems. The global climate change together the population increase causes an imbalance between the demand of water and the available water resources.. All these factors ...

    Aportaciones al proyecto, construcción y reparación de pavimentos de hormigón 

    López Carreño, Rubén-Daniel (Date of defense: 2018-07-31)

    The construction and conservation of road networks represent a major part of public expenditure. For instance, the EU-28 countries annually spend approximately EUR 20.000 million on roadway preservation. These figures ...

    Application of observability techniques to structural system identification including shear effects 

    Emadi, Seyyedbehrad (Date of defense: 2020-12-11)

    According to Timoshenko’s beam theory, nodal rotations in beam-like structures are produced by bending and shear effects. On the one hand, bending rotations can be easily calculated by the Euler-Bernoulli stiffness matrix ...

    Approach to acoustic mapping through continuous mobile monitoring 

    Quintero Perez, Guillermo (Date of defense: 2019-07-08)

    For the production of representative noise maps, a large amount of information is necessary, which includes, among others, on-site measurements of environmental noise. Thus, for noise maps based on measurements, mobile ...

    Aproximación del transporte de contaminantes en aguas someras mediante elementos finitos de alto orden 

    Villota Cadena, Angel Patricio (Date of defense: 2020-07-09)

    The objective of the doctoral thesis is to perform the numerical approximation of the transient convection-diffusion-reaction (CDR) vector equation in 2D with high order finite elements, quadratic, cubic and fourth order, ...

    Assessment of a groundwater system under global change scenarios: the case of Kwale (Kenya) 

    Ferrer Ramos, Núria (Date of defense: 2019-07-18)

    One of the main drivers of the current global change is the climate change characterized by increased number and increased length of drought periods. Another relevant driver that will imply greater pressure on natural ...

    Assessment of chloride corrosion in steel fibre reinforced cementitious composites 

    Vieira, Mylene de Melo (Date of defense: 2018-10-19)

    High performance steel fibre reinforced cementitious composites (HPSFRCCs) show enhanced structural performance and durability. The improved properties favour its use in agressive conditions (such as marine environment) ...

    Assessment of dynamic aerosol-radiation interaction in atmospheric models 

    Obiso, Vincenzo (Date of defense: 2018-03-07)

    In this thesis an assessment of the parameterization of the Aerosol-Radiation Interaction (ARI) in online integrated meteorology-chemistry models has been conducted. The model estimates of ARI radiative effects are still ...

    Backanalysis methodology based on multiple optimization techniques for geotechnical problems 

    Santos Rodríguez, Cristian de (Date of defense: 2015-12-10)

    Nowadays, thanks to the increase of computers capability to solve huge and complex problems, and also thanks to the endless effort of the geotechnical community to define better and more sophisticated constitutive models, ...

    Bedforms and associated sediment dynamics on the inner shelves at different spatio-temporal scales 

    Guerrero Sánchez, Queralt (Date of defense: 2019-02-08)

    This Thesis conducts the study of bedform development and dynamics in the inner shelf integrating observations at different spatial and temporal scales. An initial assumption is that different scales of sedimentary processes ...

    BEST : Bézier-Enhanced Shell Triangle : a new rotation-free thin shell finite element 

    Ubach de Fuentes, Pere-Andreu (Date of defense: 2020-11-18)

    A new thin shell finite element is presented. This new element doesn’ t have rotational degrees of freedom. Instead, in order to overcome the C1 continuity requirement across elements, the author resorts to enhance the ...