Now showing items 21-40 of 172

    Building a Scenario of Physics Beyond the Standard Model in the Flavor Sector 

    Arnan Vendrell, Pere (Date of defense: 2020-09-04)

    Recently lepton flavor universality tests in colliders have reported tensions with the Standard Model, providing an experimental hint at low energies of the effect of a new high energy theory. These tensions are known as ...

    Calculations of water free energy in bulk and large biological systems 

    Coronas Serna, Luis Enrique (Date of defense: 2023-03-28)

    [eng] This thesis develops, validates, and explores applications of the Franzese-Stanley (FS) coarse-grained model for bulk water, ultimately intended to represent the solvent in large-scale simulations of biological ...

    Calorimetric force spectroscopy experiments in DNA and protein folding 

    Rico Pastó, Marc (Date of defense: 2022-03-22)

    In the present thesis, single-molecule experiments have been carried out using optical tweezers with a temperature controller. Employing equilibrium and non-equilibrium experiments, the free energy, enthalpy, and entropy ...

    Catalyst and reactor design for carbon dioxide methanation 

    Alarcón Avellán, Andreina (Date of defense: 2021-04-12)

    The transformation of the current energy model towards a more sustainable mix, independent of fossil fuels, requires the exploration of new technologies that are capable of taking advantage of excess electricity derived ...

    Cell-adhesive nanopatterns for musculoskeletal tissue engineering 

    Casanellas Mercado, Ignasi (Date of defense: 2022-03-17)

    Injuries and conditions of musculoskeletal tissues are among the main causes of disability worldwide and there is a wide need for improved regenerative therapies. In vitro platforms and biomaterials that aim to guide stem ...

    Chemical vapor deposition of hexagonal boron nitride and its use in electronic devices 

    Hui, Fei (Date of defense: 2018-07-23)

    Dielectrics are insulating materials used in many different electronic devices (e.g. capacitors, transistors, barristors), and play an important role in all of them. In fact, the dielectric is probably the most critical ...

    Climate variability predictions for the wind energy industry: a climate services perspective 

    Lledó Ponsatí, Llorenç (Date of defense: 2020-12-09)

    In order to mitigate the climate change effects, the world is undergoing an energy transition from polluting sources towards renewable energies. This transition is turning the electricity system more dependent on atmospheric ...

    Cobalt-based Nanocatalysts for Electrochemical Energy Conversion 

    Wang, Xiang (Date of defense: 2022-07-11)

    Cobalt-based nanomaterials are an important class of electrocatalysts that own abundant and diverse d-orbital electronic structures, and can exhibit excellent HER, OER, EOR catalytic activity and stability in energy ...

    Colloidal Metal Phosphide Nanocrystals for Electrochemical Energy Technologies 

    Liu, Junfeng (Date of defense: 2019-05-10)

    Metal phosphides are an important class of functional materials that exhibit a wide range of applications for energy storage and conversion. However, the synthesis of metal phosphide nanoparticles and its scalability is ...

    Combined Transmission Electron Microscopy and In-Situ Scanning Tunneling Microscopy Characterization of Nanomaterials 

    Martín Malpartida, Gemma (Date of defense: 2018-07-02)

    The main goal of this thesis has been to apply in-situ Transmission Electron Microscopy (TEM) electrical measurements using a Scanning Tunneling Microscopy (STM) tip, combined with TEM imaging and spectroscopic techniques, ...

    Competition and Response: from Active Matter to Electrolytes under Confinement 

    Dal Cengio, Sara (Date of defense: 2020-12-16)

    Most systems in Nature manifest complex transport phenomena arising from the interplay of multiple time and length scales, be them intrinsic in the system’s dynamics or externally enforced. It is the case, for instance, ...

    Complex Oxide Heterostructures for Spin Electronics 

    Martín Río, Sergi (Date of defense: 2022-07-05)

    The direct manipulation of spin currents with no charges involved along with the delicate interplay between charge, spin and orbital degrees of freedom in materials and structures has attracted a renewed interest in the ...

    Contribució al desenvolupament, optimització i regeneració de sensors d’oxigen per al control d’humitat en entorns d’alta temperatura 

    Blanes Guàrdia, Mireia (Date of defense: 2021-12-13)

    Els treballs realitzats en aquesta tesi doctoral s’han dirigit cap al desenvolupament, optimització i regeneració dels sensors d’oxigen per a la detecció d’humitat en entorns d’alta temperatura per acomplir amb un objectiu ...

    Contribución al estudio de la influencia de los centros profundos en los diodos Schottky 

    Esteve Pujol, Joan (Date of defense: 1976-10-01)

    Dentro del gran desarrollo que en nuestros dias tienen los dispositivos electrónicos de estado sólido, el contacto metal –semiconductor diodo Schottky ha encontrado recientemente un interés renovado. Diversos progresos ...

    Contribución al estudio de la turbiedad atmosférica en Barcelona 

    Lorente, Jeroni (Date of defense: 1977-12-20)

    A partir de los cálculos de la atenuación de la radiación solar directa a incidencia normal en ciertos intervalos espectrales y utilizando como instrumentos de medida un actinómetro Linke-Feussner y varios heliofotómetros ...

    Corrección automática de sistemas ópticos mediante marchas exactas de rayos 

    Juvells Prades, Ignacio (Date of defense: 1977-01-01)

    Los métodos de cálculo y corrección de sistemas ópticos sufrieron una total revolución hacia 1950 con la aparición de las calculadoras electrónicas programables. Su rapidez y potencia de cálculo permiten abordar los ...

    Cosmology on the Edge of Lambda-Cold Dark Matter 

    Bernal Mera, José Luis (Date of defense: 2019-09-13)

    Cosmology is the science that studies the Universe as whole, aiming to understand its origin, composition and evolution. During the last decades, cosmology has transitioned from a “data staved” to a “data driven” science, ...

    Dark Matter and Massive Neutrinos: Cosmological Probes of Physics Beyond the Standard Model 

    Short, Kathleen (Date of defense: 2022-12-12)

    [eng] The overwhelming evidence for the existence of dark matter in the Universe, and the discovery of the neutrino masses, are striking indicators of the need for new physics beyond the ΛCDM and Standard Model paradigms. ...

    DBD plasma reactor for CO2 methanation 

    Biset Peiró, Martí (Date of defense: 2022-01-21)

    One of the most serious challenges facing society is the need to reduce the emissions of greenhouse gases such as carbon dioxide (CO2), mainly caused by the widespread use of fossil fuels. The energy transition to renewable ...

    Deciphering the utility of Galleria mellonella as an infection and toxicity in vivo model 

    Moyà Anderico, Laura (Date of defense: 2021-04-26)

    Galleria mellonella (greater wax moth) is a popular animal model that has been extensively used as an alternative in vivo model for investigating the virulence and pathogenicity of different bacteria. G. mellonella has ...