Now showing items 1-20 of 359

    Challenges for shellfish aquaculture in Mediterranean coastal areas 

    Fernández Tejedor, Margarita (Date of defense: 2023-12-18)

    (English) The increase in the production of marine bivalves targets the sustainable development of aquaculture to improve global food and nutrition security. Bivalve aquaculture is currently facing challenges and threats ...

    Aportaciones de técnicas geomáticas al análisis de los desprendimientos rocosos 

    Prades Valls, Albert (Date of defense: 2023-11-30)

    (English) The term rockfall applies to blocks or masses of rock that, after separating from a steep wall, experience free fall and then impact against the ground, with the consequent rebound and possible rolling and sliding ...

    Secondary air pollutants in urban and rural Catalonia, Spain: characterizing the precursors, source-contributions, and toxicity 

    In 't Veld, Marten (Date of defense: 2023-11-29)

    (English) Air pollutants can be classed as either primary or secondary pollutants. Primary air pollutants are those that are directly emitted into the atmosphere, whereas secondary air pollutants are generated in the ...

    Formació de despreniments rocosos a la muntanya de Montserrat 

    Janeras Casanova, Marc (Date of defense: 2023-10-23)

    (English) In the Montserrat Mountain, high hazard of rockfall and high human exposure by visitors to both Monastery and Natural Park converge. It is a relevant geological risk difficult to mitigate since it is necessary ...

    Technologically-sustained ecological monitoring of a coastal fish community with a highly integrated biological and environmental data 

    Francescangeli, Marco (Date of defense: 2023-10-30)

    (English) The Monitoring of coastal marine ecosystems has been traditionally carried out with man and vessel-assisted methodologies. In the last decades, new technologies have been progressively integrated by platforms ...

    Intelligent condition monitoring of structures through data-driven process and machine learning methods 

    Leon Medina, Jersson Xavier (Date of defense: 2023-10-06)

    (English) In the last years, the condition monitoring of structures has evolved and improved using technologies such as artificial intelligence, sensor networks, and industry 4.0 because of the multiple advantages these ...

    Seismic performance improvement of underground structures through a low lateral stiffness design 

    Bu, Xiangbo (Date of defense: 2023-11-09)

    (English) Recent decades have witnessed varying degrees of damage in underground structures, including instances of structural collapse, reported during post-earthquake hazard investigations. Therefore, the research on ...

    Shear transfer mechanism in steel-concrete composite slabs and columns 

    Soltanalipour, Milad (Date of defense: 2023-05-10)

    (English) Composite structures are frequently used in the construction of high-rise buildings due to their high ductility and strength. This article-based doctoral thesis has multiple objectives related to different ...

    Assessment of the biological risks associated to the use of biosolids and wastewater 

    Sanz Lanzas, Claudia (Date of defense: 2023-05-26)

    (English) The circular economy is an emerging concept presented as a solution to counteract the damage caused by the linear economic scheme followed in the past decades. It is based on the principle of "closing the life ...

    El costo del impacto sobre el litoral debido al cambio climático en Cataluña 

    Lomelí Quintero, Víctor Manuel (Date of defense: 2023-10-13)

    (English) Climate change is a major issue that is having a significant impact on coastal areas globally. This phenomenon is generating processes of erosion, flooding and sea level rise, which is of great concern. These ...

    Pelagia noctiluca (Cnidaria: Scyphozoa) as an industrial research model: improvements in aquaculture techniques and preventive measures against their stings 

    Ballesteros Mascarell, Ainara (Date of defense: 2023-01-13)

    (English) Jellyfish stings cause discomfort to users of the marine environment, who sometimes require medical assistance. Although jellyfish stings are common today, the scientific community remains in disagreement on how ...

    Definition of multidimensional reduced order models for the elastic analysis of large composite structures 

    Turon Pujol, Francesc (Date of defense: 2024-03-05)

    (Engilsh) Modern composite materials, primarily based on the union of polymeric matrices and fibers of glass, carbon or any other fiber of remarkable rigidity, have paved the way for the design and manufacture of lightweight ...

    Towards computational modeling of electrohydrodynamics in microfluidics-based manufacturing 

    Narváez Muñoz, Christian (Date of defense: 2023-05-05)

    (English) The high precision controllability and versatility of Electrohydrodynamic (EHD) processes are enabling and accelerating the development of novel microfluidic-based manufacturing techniques. This technology relies ...

    Particle methods for reactive transport modeling in heterogeneous aquifers 

    Pérez Illanes, Rodrigo Alfonso (Date of defense: 2024-01-16)

    (English) Aquifers are naturally heterogeneous systems across multiple scales, which poses a known difficulty for grid-based solvers of solute transport. When advection is the dominant transport mechanism, concentrations ...

    Use of alternative materials in soil stabilization: mechanical and environmental aspects 

    Baloochi, Hani (Date of defense: 2023-03-17)

    (English) Currently, the two most raw material consumer industries are civil engineering and the pulp and paper industry. Meanwhile, these sectors face severe criticism due to their environmental impact. Additionally, by ...

    On the use of decadal predictions for agricultural climate services: bridging the gap between service providers and users 

    Solaraju Murali, Balakrishnan (Date of defense: 2023-01-26)

    (English) Unfavorable and extreme climate events such as drought and heat stress heavily impacts the agriculture sector and food security globally, and the impact of these climate hazards is expected to increase over the ...

    Return of the marine heterotrophic flagellates: diversity, distribution and gene expression patterns 

    Obiol Plana, Aleix (Date of defense: 2023-01-27)

    (English) Marine heterotrophic flagellates (HF) are very small (2-5 µm) unpigmented protists that are dominant bacterial grazers in the ocean, where they link the transfer of carbon from bacterial cells to higher trophic ...

    Influence of axial compression ratio in building columns 

    Villar Salinas, Sergio (Date of defense: 2023-12-15)

    (English) Axial forces in columns of moment-resisting frames (MRF) have a paramount role for the seismic performance of these structural systems. Nonetheless, there are significant gaps in the literature entailing the ...

    WIM-based modelling of traffic load scenarios for extreme load effects in long-span bridges 

    Wang, Xuejing (Date of defense: 2023-11-28)

    (English) During the lifetime of long-span bridges, the traffic conditions are affected by the surroundings and will typically vary and also unpredictably change. In this thesis, a prior site-specific traffic load spatial ...

    Closing loops in intensive livestock systems: innovative strategies for nutrient recycling and emissions reduction 

    Morey Gual, Lluís (Date of defense: 2023-11-17)

    (English) The exponential growth of world population is leading to a high demand of food products and, consequently, to the development of intensive agricultural and livestock systems. In this sense, synthetic fertilizers ...