Mostrando ítems 208-227 de 353
Carles Brangarí, Albert (Fecha de defensa: 2017-09-22)
Most of the microorganisms on Earth are found in sophisticated colonies called biofilms. Such microbial communities may proliferate everywhere life can exist as long as nutrients are available and surface attachment is ...
Benedetti, Lorenzo (Fecha de defensa: 2017-05-11)
Strain localization and quasi-brittle failure in frictional-cohesive materials is still an open and challenging problem in computational mechanics. Owing to its complexity and the significant implications on numerous ...
De Vriendt, Kevin (Fecha de defensa: 2021-07-16)
Seawater intrusion presents one of the most unique and ubiquitous groundwater problems in the field of hydrogeology. Its complex boundary conditions coupled with variable density flow results in non-uniform flow which lead ...
Larion, Ygee (Fecha de defensa: 2022-02-01)
In a large number of geo-environmental applications, it is essential to model coupled processes that depend on several design parameters such as material properties and geometrical features. Thermo-hydro-mechanical (THM) ...
Puig Montellà, Eduard (Fecha de defensa: 2019-07-16)
Numerical simulations at the pore scale are a way to study the behavior of multiphase flows encountered in many natural processes and industrial applications. In this work, liquid morphology and capillary action are examined ...
Stamatopoulos, Georgios (Fecha de defensa: 2023-07-07)
(English) This thesis records the evolution of the container throughput dynamics of the European port system from 2001-2020, analyses the dynamics of the European container port hierarchy with methodologies that have not ...
Jarauta Arabi, Àlex (Fecha de defensa: 2016-03-30)
Fuel cells are promising alternatives to conventional energy conversion devices. Cells fueled with hydrogen are environmentally friendly and their effciency is up to 3 times higher than that of high-temperature combustion ...
Rahbaralam, Maryam (Fecha de defensa: 2018-02-23)
Random walk particle tracking methods are a computationally efficient family of methods to solve reactive transport problems. While the number of particles in most realistic applications is in the order of 10^6 - 10^9, the ...
Vendrell Miguel, Lluís (Fecha de defensa: 2017-11-10)
This thesis aims to test the ability of a non-hydrostatic multiscale mineral dust model to reproduce the physical processes associated with the dust cycle at meteorological scales ranging from synoptic to mesoscale (~100-1 ...
Matas Casado, Gerard (Fecha de defensa: 2020-11-04)
The fragmentation process in rockfalls is a complex phenomenon that is not well understood and only a few rockfall simulation models consider it explicitly. Fragmentation significantly affects the evaluation of the hazard ...
Rodríguez-Ros, Pablo (Fecha de defensa: 2020-07-16)
Isoprene (C5H8) is the most widely emitted biogenic volatile organic carbon (BVOC). It is produced in the biosphere both on land and in the ocean, and in the atmosphere it acts as a precursor of secondary organic aerosols. ...
Quattrocchi, Federico (Fecha de defensa: 2017-10-24)
The understanding of the driving forces involved in the abundance fluctuation of fish populations is an important requirement for conservation and management, especially in the context of environmental changes. In the North ...
Song, Fei (Fecha de defensa: 2021-06-28)
Representing the time-dependent plastic behaviour of geomaterials is a critical issue in the correct application of tunnelling design techniques such as the convergence-confinement method or numerical modelling. Furthermore, ...
Roigé Montornés, Núria (Fecha de defensa: 2020-07-15)
This Doctoral Thesis addresses aspects of interest for hydraulic infrastructure managers, such as investment decision support tools, in order to provide both decision support and the justification tools which are required ...
Oorthuis Gómez, Raül (Fecha de defensa: 2022-07-19)
Slope mass-wasting (SMW) due to shallow landslides or debris flows is one of the most important erosional processes in many mountainous regions together with surficial erosion by rainfall runoff. These erosive processes ...
Rodríguez Gutiérrez, Gerardo (Fecha de defensa: 2017-07-03)
This doctoral thesis presents the use of an opto-electronic system so-called OBR (Optical Backscattered Reflectometer) as an alternative of measurement in structural health monitoring (SHM) processes in concrete structures, ...
de Vreese, Steffen (Fecha de defensa: 2021-06-17)
While marine, anthropogenic noise pollution is a scientific and societal matter of concern, there is limited knowledge on how sea animals, particularly cetaceans, perceive their environment through sounds. Toothed whales, ...
Yerro Colom, Alba (Fecha de defensa: 2015-11-10)
Landslides and slope instabilities represent one of the most important problems in geotechnics causing significant damages around the world every year. Understanding the mechanics of the whole process is of particular ...
Ferrer Ferré, Àlex (Fecha de defensa: 2017-05-26)
The present dissertation aims at addressing multiscale topology optimization problems. For this purpose, the concept of topology derivative in conjunction with the computational homogenization method is considered. In ...
Wang, Jingjing (Fecha de defensa: 2021-07-23)
Reactive transport modeling is a methodological tool to study the coupled physical, chemical and biological processes in Earth system. It is complex not only because of the nature of the equations, but also because of the ...