Now showing items 2381-2400 of 5566
Raventós Ribera, David (Date of defense: 2019-04-15)
Understand and tame complex quantum mechanical systems to build quantum technologies is one of the most important scientific endeavour nowadays. In this effort, Atomic, molecular and Optical systems have clearly played a ...
Ramon Tarragona, Anna (Date of defense: 2014-10-27)
Geological formations containing sulphates are commonly associated with the development of severe expansions when they are involved in tunnel excavation. The intensity of the observed expansive behaviour in these materials ...
Kefalogiannis, Nektarios (Date of defense: 2016-02-02)
The present thesis couldn't have been unaffected by the recent economic crisis. Even before this crisis, it was well-known that architecture was languishing in its traditional boundaries. In the countries that didn't suffer ...
Campo Gatell, Vanessa del (Date of defense: 2013-03-22)
One of the challenges of the wind energy community today is to improve the existing background on the aerodynamic phenomena of a Horizontal Axis Wind Turbine (HAWT), the prediction of the wind speed distribution on the ...
Cordero Arias, Josbel Andreina (Date of defense: 2019-09-09)
This thesis presents an experimental approach on the subject of cracking in soils due to changes in environmental conditions, where research is mainly directed to the soil-air interface and the effect of boundary conditions. ...
Strahl, Stephan (Date of defense: 2014-11-07)
Increasing global energy demand, growing carbon emissions and the depletion of fossil fuel sources are some of the most important driving forces for the development of sustainable energy solutions. Proton Exchange Membrane ...
Najdi, Abdallah (Date of defense: 2023-06-20)
(English) The thesis presents part of an ongoing nvestigation on the Thermo-Hydro-Mechanical (THM) behaviour and cracking of deformable unsaturated soils undergoing cycles of drying and wetting. An experimental approach ...
Gasparini, Andrea (Date of defense: 2021-03-04)
CO2 geological storage is considered one of the options technologically viable in order to decrease the industrial emissions of this gas species that strongly contribute to the greenhouse effect in the atmosphere (IPCC, ...
Liaudat, Joaquín (Date of defense: 2018-06-15)
This thesis aims at deepening in the understanding of the mechanisms by which the stress state affects the development of concrete expansions and cracking due to the Alkali-Silica Reaction (ASR). With this purpose, a ...
Fernández Pérez, Ignasi (Date of defense: 2015-07-20)
Many reinforced concrete structures suffer damage due to aging and due to the environmental agressivity, thus affecting their serviceability performance and safety. Structural evaluation of a deteriorated structure is ...
Torrentino, Taciano (Date of defense: 2015-07-10)
The goal of this thesis is to investigate the influence of current modulation in the dynamics of the low-frequency fluctuations (LFF) regime induced by optical feedback in semiconductor lasers. In this regime the laser ...
Lakshmikantha, M.R. (Date of defense: 2009-06-12)
The thesis focuses on the experimental and theoretical aspects of the process of cracking in drying soils. The results and conclusions were drawn from an exhaustive experimental campaign characterised by innovative ...
Herrero Casas, Albert (Date of defense: 2013-06-07)
Fluvial bifurcations are systems that have a great influence on human society. Their formation and evolution can affect to activities as agriculture or industry and a good knowledge of the mechanisms that affect the processes ...
Primucci, Mauricio (Date of defense: 2012-09-10)
A fuel cell is a device that gives electric power directly from electrochemical reduction and oxidation reactions. PEM fuel cells present some properties that make them appropriate for portable and transport applications: ...
Fernández López, Cristina (Date of defense: 2019-02-01)
Torrential flows have so far been studied less than have river flows, due to the difficulty of faithfully reproducing them in the laboratory, and the few field measurements available. For this reason, this present research ...
Bonet Gil, Enrique (Date of defense: 2015-03-26)
This thesis aims to develop a predictive control for irrigation canals to improve the management of water resources. Water is necessary for life and it is a scarce good that we need for drinking, in the agriculture, etc. ...
Monerris Belda, Alessandra (Date of defense: 2009-09-07)
Tot i que l'aigua retinguda pel sòl constitueix una petita fracció del volum total d'aigua que hi ha a la Terra, l'humitat del sòl juga un paper important als models climàtics i hídrics. La radiometria en banda L (1.400 a ...
Alloing, Mathieu (Date of defense: 2014-05-28)
In this thesis, we report experimental evidence of a "gray" condensate of excitons, as predicted theoretically by M. Combescot et al. Most importantly, the condensate is characterized by the macroscopic population of dark ...
Bottini, Henny (Date of defense: 2014-03-28)
Turbulence onset within an initially laminar flow is one of the most common phenomenon in Fluid Mechanics, yet is an open field of research. This is due to the many and diverse causes that can trigger turbulence, which ...
Bermejo Plana, David (Date of defense: 2022-06-03)
(English) The fresh water scarcity has become a concern for societies as a result of the scientific evidence about climate change and the intensive human activities. Thermal separation is one of the best available techniques ...