Advanced carbon capture and storage technologies 

    Ćwik, Agnieszka (Date of defense: 2019-09-30)

    In this work two research topics are presented: investigation of carbonation reactions of high – calcium waste materials and CO2 storage in coal. Firstly, sorption capacity of CO2 and CH4 of hard coal and associated ...

    Aerogels catalítics de Co-Si sobre monòlits ceràmics per a produir hidrogen mitjançant la reformació d'etanol 

    Domínguez Escalante, Montse (Date of defense: 2016-01-15)

    Hydrogen is an energy vector; it is not a direct energy source. It is an energy carrier. Hydrogen can be used to feed fuel cells (an electrochemical device), thus increasing the efficency of energy transfer as the amount ...

    Automation of the Monte Carlo simulation of medical linear accelerators 

    Rodríguez Castillo, Miguel Lázaro (Date of defense: 2016-02-05)

    The main result of this thesis is a software system, called PRIMO, which simulates clinical linear accelerators and the subsequent dose distributions using the Monte Carlo method. PRIMO has the following features: (i) it ...

    Carbon capture, utilization, and storage (CCUS) and how to accelerate the development and commercialization of carbon capture technologies and carbon-based products in the European and United States markets 

    Soto, Alicia (Date of defense: 2021-11-04)

    The main theme of this work revolves around the CO2 molecule, a stable waste gas of low value, low energy and often available in large quantities in different places. This work examines some viable avenues for capturing, ...

    Catalytic hydrogen production over RhPd/CeO2 catalysts and CO purification over Au/TiO2 catalysts 

    Jiménez Divins, Núria (Date of defense: 2015-04-10)

    This Thesis focuses on the study of the catalytic production of hydrogen from a biofuel, namely the bioethanol. It also studies the subsequent purification of pre-cleaned reformate streams. The end use of the hydrogen ...

    Comparative study of Final Focus Systems for CLIC and other luminosity enhancement studies for future linear colliders 

    García Morales, Héctor (Date of defense: 2015-01-16)

    The 4th of July 2012 was a milestone date in the history of physics of the last decades. The discovery of the Higgs boson at the ATLAS and CMS experiments thanks to the proton collisions delivered by the LHC not only has ...

    Contribución a la caracterización de aerosoles radiactivos derivados del radón 

    Vargas Drechsler, Arturo (Date of defense: 2000-05-12)

    La existencia de una relación entre el riesgo a desarrollar un cáncer de pulmón y la exposición al radón y descendientes presentes en el aire se puso de manifiesto hace ya bastante tiempo en la población minera. Desde ...

    Contribution to the validation of best estimate plus uncertainties coupled codes for the analysis of NK-TH nuclear transients 

    Pericas, Raimon (Date of defense: 2015-05-15)

    The calculations that allow the operating license of the nuclear reactors are usually made using conservative methods. This conservatism, often excessive, limits the actual capabilities of the industry to increase energy ...

    Contributions to new challenges in radiotherapy : from small field dosimetry to stereotactic body radiation therapy 

    Puxeu Vaqué, Josep (Date of defense: 2015-12-22)

    The use of small Fields has substantially increased in radiotherapy during recent years mainly due to expansion in the use of modulated techniques which are also used at some institutions for Stereotactic Body Radiotherapy ...

    Design and characterization of magnetic systems in race-track microtrons 

    Rigla Pérez, Juan Pablo (Date of defense: 2013-10-09)

    During last four or five decades there has been a growing demand in particle accelerators which can provide electron beams in the energy ranging from 2 MeV to 100 MeV with high energy resolution and good dose control. Other ...

    Design of a 4 π neutron detector for ß-delay neutron detection experiments. 

    Gorlychev, Vitaly (Date of defense: 2014-02-05)

    Beta delayed neutron emission probability is one of the main properties of neutron rich nuclei away from the valley of beta stability. The knowledge of this parameter provides the opportunity to extend the information on: ...

    Development and assessment of estimate methods for internal dosimetry using PET/CT 

    López Vilanova, Natàlia (Date of defense: 2019-04-03)

    The aim of this thesis was to assess and develop internal dose calculations methods in diagnostic and therapeutic nuclear medicine procedures to patients undergone PET/CT explorations. Towards this objective, the accuracy ...

    Enhancement of methane production from the anaerobic digestion of chemical pulp and paper mill effluents 

    Rodriguez-Chiang, Lourdes (Date of defense: 2018-05-04)

    Sustainability of resources such as energy, water and waste have become important drivers in our current economy. For large industries that are water and energy intensive like pulp and paper (P&P) mills, this is a specifically ...

    Hydrogen production from bioethanol using cobalt hydrotalcites 

    Espinal Bustos, Raúl Uziel (Date of defense: 2013-12-20)

    Hydrogen constitutes a promising alternative to manage our energy supply more efficiently. Hydrogen can be stored and used in fuel cells to produce electricity, where it combines with the oxygen present in the air and ...

    Impacte dels canvis anatòmics sobre la distribució de dosi en els pacients amb càncer de cap i coll tractats amb 3DCRT i IMRT 

    Beltrán Vilagrasa, Mercè (Date of defense: 2012-12-14)

    En aquesta tesi s’estudien les implicacions dosimètriques que comporten els canvis anatòmics que pateixen els pacients afectats de càncer de cap i coll (CCC) durant el tractament de radioteràpia (RT). L’estudi es realitza ...

    Improvement of early warning monitoring using gamma spectrometry 

    Camp Brunés, Anna (Date of defense: 2017-09-15)

    The present thesis is focused on the improvement of radiological surveillance networks using gamma spectrometry. Tipically they are equipped with gamma dose rate monitors, while they do not have gamma spectrometry monitors. ...

    Island-based polygeneration systems : feasibility of bBiomass-driven distributed concepts 

    Wegener, Moritz (Date of defense: 2021-02-12)

    The colossal risks and challenges posed by climate change require innovative solutions that must fulfil energy service demands sustainably. The concept of small-scale, biomass-based polygeneration (SBP) is one such ...

    Levels and behaviour of radionuclides in water treatment plants : the case of the Barcelona metropolitan area urban water cycle 

    Mulas, Dani (Date of defense: 2020-02-28)

    The Barcelona metropolitan area (BMA; 3.2 M inhabitants) has an integrated urban water cycle management. Different type of treatment plants are located along the drinking, sewerage and reuse networks where specific treatments ...

    Local optics corrections in the HL-LHC 

    Coello de Portugal - Martínez Vázquez, Jaime Maria (Date of defense: 2021-06-16)

    In order to increase the performance of particle colliders, it is crucial to make the beam sizes at the collision points as small as possible. This causes an increase of the beam size in the region surrounding the collision ...

    Neutron capture cross section measurement of the heaviest s-process branching 204Tl and of 203Tl at CERN n_TOF 

    Casanovas Hoste, Adrià (Date of defense: 2020-10-27)

    Neutron capture cross sections are fundamental in the study of the slow neutron capture process of nucleosynthesis, also known as the s-process, which produces half of the observed solar system abundances of elements heavier ...