Browsing by Title

Hydraulic behaviour of bentonite based mixtures in engineered barriers: The Backfill and Plug Test at the Äspö HRL (Sweden)

Mata Mena, Clemente (Date of defense: 2003-07-17)

In 1996 the Backfill and Plug Test Project started at the Äspö Hard Rock Laboratory (Sweden) managed by SKB (the Swedish Radioactive Waste Agency). The Backfill and Plug Test Project makes up an important part of SKB's ...

Hydraulic fills liquefaction : effect on quay stability

Tarragó Munté, Daniel (Date of defense: 2021-06-03)

The starting point of this thesis is the failure of part of a quay wall under construction. The quay was divided in two phases, failure affected Phase 1 only. The failure and all the relevant associated information on quay ...

Hydrmagmatic monogenetic volcanism in continental and oceanic island enronments

Pedrazzi, Dario (Date of defense: 2014-03-07)

Monogenetic volcanism is characterized by a large diversity of eruptive styles, morphologies and deposits. Monogenetic landforms are the result of a complex merging of internal (magma composition, vesiculation) and external ...

Hydro-mechanical analysis of expansive clays : constitutive and numerical modelling.

Ruiz Restrepo, Daniel Felipe (Date of defense: 2020-06-12)

Bentonite-based materials are being currently considered in several countries as a backfill component in the multi-barrier concept for deep geological disposal of radioactive waste. The bentonite barrier fulfils several ...

Hydro-mechanical behaviour of compacted binary mixtures : an experimental study

Mirsalehi, Sajjad (Date of defense: 2018-04-30)

This research focusses on an experimental investigation on the hydro-mechanical behaviour of binary ‘all-one’ mixtures. These mixtures –originated from the excavation of selected materials during earthwork constructions– ...

Hydro-mechanical behaviour of pellet/powder mixture of bentonite and impact of gas migration

Mesa Alcantara, Arisleidy (Date of defense: 2021-07-02)

The hydro-mechanical behaviour of MX80 bentonite pellet-based mixture (80% high-density pellets in dry mass and crushed granular powder) has been explored in this thesis within the context of the French ‘Vertical Sealing ...

Hydro-social transformations in the Lake Urmia basin, Iran

Ženko, Maja (Date of defense: 2020-07-06)

Les alteracions antropogèniques a gran escala dels fluxos d'aigua a través de la infraestructura hidràulica són la manifestació dels imaginaris hidrosociales de grups políticament i social poderosos que, sovint, produeixen ...

Hydroacylation and C-N Coupling Reactions. Mechanistic Studies and Application in the Nucleoside Synthesis

Marcé Villa, Patricia (Date of defense: 2008-05-23)

The PhD work "Hydroacylation and C-N coupling Reactions. Mechanistic Studies and Application in the Nucleoside Synthesis" tackle two different objectives, a) developing new methods of synthesis of nucleosides (introduction, ...

Hydrocalumite-based catalysts for glycerol revalorization

Granados Reyes, Judith Cecilia (Date of defense: 2015-07-27)

En la producció de biodièsel s’obté glicerol com a subproducte en grans quantitats, generant-se un gran excedent. Per tant, és necessari buscar noves vies de transformació de glicerol en productes de major valor afegit, ...

Hydrocarbons in the open ocean waters near the Galician Bank after the deep sea spill from the Prestige wrecks

Elordui-Zapatarietxe, Saioa (Date of defense: 2009-06-03)

Hoy en día existe una escasez de estudios sobre la distribución de los hidrocarburos en mar abierto, aunque el aumento de la explotación de yacimientos de petróleo y la intensificación del tráfico marítimo más allá de la ...

Hydrodechlorination of chlorinated organic wastes over pd supported mixed oxide catalysts

Meshesha, Beteley Tekola (Date of defense: 2011-07-01)

Environmental pollution by polychlorinated chlorinated organic wastes is of great concern. Catalytic hydrodechlorination is considered clean and efficient methodology for safe disposal of chlorinated organic wastes. This ...

Hydrodynamic and biochemical Computational Fluid Dynamic modelling of full-scale anaerobic digesters for wastewater treatment

Arnau Notari, María Rosario (Date of defense: 2022-04-01)

Anaerobic digestion is one of the most widely used biological treatments for the stabilisation of sewage sludge, but the effectiveness of the process depends on good mixing. The Computational Fluid Dynamics (CFD) technique ...

Hydrodynamic characterisation of aquaculture tanks and design criteria for improving self-cleaning properties

Masaló Llorà, Ingrid (Date of defense: 2008-09-10)

El propòsit del treball es caracteritzar hidrodinàmicament els tancs més utilitzats en el sector aqüícola, i donar pautes de disseny per millorar-ne l'autoneteja, i optimitzar l'eficiència d'utilització tant de l'espai com ...

Hydrodynamic effects on active colloidal suspensions

Navarro Argemí, Eloy (Date of defense: 2018-10-25)

The goal of this thesis is studying hydrodynamic effects on active colloidal suspensions. Hydrodynamic interaction is propagated through the fluid in which the colloids displace due to the flow they create during their ...

Hydrodynamic models of accretion onto rotating compact stars

Martín Rodríguez, José David (Date of defense: 2023-07-07)

(English) Hydrodynamic models are essential for our understanding of the physics of stellar explosions, and specifically, for their potential contribution to the Galactic chemical abundances. In this Work, a one-dimensional ...

Hydrodynamic response of a shallow and microtidal estuary : Alfacs Bay. From high to low frequency processes

Cerralbo Peñarroya, Pablo (Date of defense: 2015-07-24)

Using both observations and modelling tools, it is investigated the main hydrodynamic response mechanisms of a microtidal and shallow bay in the Mediterranean Sea: Alfacs Bay. Main objectives are considered using differenttim ...

Hydrodynamics and geochemistry at multiple scales : characterizing preferential flow-paths and wormholes in evaporitic sediments

Trabucchi, Michela (Date of defense: 2021-05-11)

The characterization of evaporitic aquifers for a better understanding of hydrodynamics and geochemical processes is of great importance, especially in environments where both the sustainability of unique ecosystems and ...