Now showing items 1-20 of 837

    3D pixel sensors for the high luminosity LHC ATLAS detector upgrade 

    Vázquez Furelos, David (Date of defense: 2019-11-29)

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    3D Sensors for the ATLAS HL-LHC Pixel Upgrade and Future Colliders 

    Manna, Maria (Date of defense: 2021-09-28)

    Aquesta tesi tracta el desenvolupament, la fabricació i la caracterització de detectors de silici 3D fabricats al Centre Nacional de Microelectrònica (IMB-CNM) de Barcelona. Degut a l’actualització del High ...

    A deterministic model for lake clarity; application to management of Lake Tahoe (California-Nevada), USA 

    Pérez Losada, Joaquim (Date of defense: 2001-11-15)

    This dissertation has as its goal the quantitative evaluation of the application of<br/>coupled hydrodynamic, ecological and clarity models, to address the deterministic prediction of water clarity in lakes and reservoirs. ...

    A Finite Element Model for Free Surface and Two Fluid Flows on Fixed Meshes 

    Coppola Owen, Herbert (Date of defense: 2009-06-19)

    Los flujos con interfaces móviles (problemas de superficie libres y de dos fluidos) aparecen en numerosas aplicaciones de ingeniería. Los métodos presentados en esta tesis están orientados principalmente a la simulación ...

    A Novel Column Format for on-Chip Liquid Chromatography Fabricated in Cyclo Olefin Polymer 

    Illa Vila, Xavier (Date of defense: 2010-09-28)

    This thesis describes a novel column format to be used in pressure-driven reversed-phase liquid chromatography. The column contains an ordered pillar array where the stationary phase is supported, and it is fabricated in ...

    A novel depleted monolithic active pixel sensor for future high energy physics detectors 

    Fernandez-Perez, Sonia (Date of defense: 2016-05-19)

    El Gran Colisionador de Hadrones (LHC) tiene previsto aumentar su luminosidad hasta siete veces su valor actual con el objetivo de ampliar su actual programa de física. Esta mejora se conoce con el nombre de High Luminosity ...

    A Novel Sensor Concept for Selective and Self-Powered Gas Detection 

    Hoffmann, Martin W. G. (Date of defense: 2015-01-19)

    Les tecnologies de sensors de gas basades en semiconductors presenten limitacions importants de selectivitat i consum d'energia. Per tant, esdevé necessari l’assaig de nous conceptes de dispositius capaços de satisfer ...

    Absolute quantification in brain SPECT imaging 

    Cot Sanz, Albert (Date of defense: 2003-12-17)

    Certes malalties neurològiques estan associades amb problemes en els sistemes de neurotransmissió. Una aproximació a l'estudi d'aquests sistemes és la tomografia d'emissió SPECT (Single Photon Emission Computed Tomography) ...

    The accretion flow onto white dwarfs and its X-ray emission properties 

    Ospina Escobar, Nataly (Date of defense: 2017-09-21)

    La combustión explosiva de Hidrógeno sobre la superficie de una enana blanca provoca estallidos de novas. El sistema binario donde una nova clásica ocurre es una variable cataclísmica (cuya estrella compañera es de la ...

    Accretion onto Neutron Stars: Hydrodynamics and Nucleosynthesis 

    Moreno Guzmán, Fermín (Date of defense: 2009-11-25)

    In the middle of the 70s, some authors suggested that accretion of hydrogen and helium rich material by a neutron star in a binary system, where the companion star would have low mass, could explain thermonuclear bursts ...

    Active shear strengthening of reinforced concrete beams using Ni-Ti-Nb shape memory alloys 

    Rius Gibert, Joan Maria (Date of defense: 2019-04-05)

    [eng] Shear strengthening of existing structures is often required as shear failures in reinforced concrete (RC) members are associated with brittle collapses, it being essential to avoid this kind of failure. This thesis ...

    Adecuación y desarrollo de métodos de análisis de datos obtenidos mediante espectrometría gamma para la medida de la radiactividad ambiental en tiempo real 

    Prieto Butillé, Elena (Date of defense: 2017-07-19)

    La Xarxa de Vigilància Radiològica Ambiental de la Generalitat de Catalunya està constituïda per diversos tipus de detectors per a la mesura automàtica en continu i en temps real de la radiació ambiental. Entre ells destaquen ...

    Ads/CFT Correspondence and Superconductivity: Various Approaches and Magnetic Phenomena 

    Dector Oliver, Aldo (Date of defense: 2015-10-28)

    The AdS/CFT correspondence is one of the most important developments in the history of theoretical physics. Using as a binding bridge superstring theory, or, more concretely, some theoretical aspects in the interaction ...

    Advanced Characterization and Modelling of Charge Transfer in Perovskite Solar Cells 

    Gelmetti, Ilario (Date of defense: 2019-07-15)

    Aquesta tesis inclou el treball fet en ICIQ sobre fabricació, caracterització, i modelització de cel·les solars de perovskita híbrida. Agafades des de la recerca en altres tipus de cel·les solars, les eines de anàlisi, ...

    Advanced computational tools for EELS data reduction and clustering, quantitative analysis and 3D reconstructions 

    Blanco Portals, Javier (Date of defense: 2021-03-04)

    This thesis has been primarily dedicated to the exploration and implementation of new computational analysis tools and techniques for the characterisation of nanomaterials and devices via transmission electron microscopy ...

    Advanced strategies for high efficiency kesterite thin film solar cells 

    Giraldo Muñoz, Sergio (Date of defense: 2018-03-16)

    The main objective of this thesis was to develop high efficiency thin film solar cells based on low-toxic and earth-abundant kesterite Cu2ZnSnSe4 (CZTSe) absorbers through the implementation of innovative doping strategies. ...

    Advanced TEM imaging tools for materials science 

    López Conesa, Lluís (Date of defense: 2015-12-18)

    Being able to directly relate the final properties with the intimate structure provides a unique insight into the functionality of materials and devices, especially when compared to the necessarily statistical nature of ...

    Advanced thermal analysis of ReBCO superconductor precursor films and functional oxides 

    Rasi, Silvia (Date of defense: 2019-11-12)

    High temperature superconductivity and in particular YBa2Cu3O7-x (YBCO) coated conductors (CCs) are a crucial technology for the drastic reduction of CO2 emissions. Since nowadays YBCO CCs are not competitive economically, ...

    Advancements in mesoscale ensemble prediction strategies: Application to Mediterranean high-impact weather 

    Hermoso Verger, Alejandro (Date of defense: 2021-09-02)

    [cat] La predictibilitat d'esdeveniments d'alt impacte a la regi o Mediterr ania ha millorat substancialment al llarg de les darreres d ecades. No obstant aix o, una representaci o precisa d'aspectes dels sistemes convectius ...

    Advances in carbon nanofiber-based supercapacitors 

    Daragmeh, Allan (Date of defense: 2017-07-21)

    Nowadays, our modern society huge challenges related to energy, savings as well as energy management, to improve and extend the standard of living to a growin population over 7000 million people, and do it with sustainable ...