Programa de Doctorat en Ciències: Recent submissions
Now showing items 41-60 of 266
Stabilization of Polymorphic Halide Perovskite Black Phase for Optoelectronic Applications
The photovoltaic and luminance efficiencies of halide perovskite-based devices achieved an unprecedented improvement in comparison to their existing counterparts. Among the family of lead-based halide perovskites, the ...
Macro- and nanoscale self-assembled amino acid derivatives as reduction-sensitive and photoactive materials
Amino acid-based systems are attractive for biomedical applications given their high biocompatibility and functionality. Amino acids self-assemble into various structures ranging from a few nanometers to hundreds of microns ...
Mass spectometry based untargeted metabolomics in food and health area
In this doctoral thesis, the contribution of untargeted metabolomics together with advanced analytical techniques based on the coupling of chromatographic separations with both low resolution mass spectrometry (MS) and ...
Exploring the potential for the selective breeding of Nesidiocoris Tenuis: A study of its genetics and feeding behavior
Nesidiocoris tenuis is a zoophytopbagous insect used in tomato crops to control key pests. Its ability to foed on plant tissues gives it the advantages to be able to establish in the crops before the arrival afthe pest, ...
Electronic and magnetic factors in the design of optimum catalysts for hydrogen fuel cells
Fuel cells represent one of the most promising energy storage system nowadays. Nonetheless, several obstacles need to be overcome in order to commercially exploit this technology. One of them lies in the efficiency loss ...
Different approaches to improve perovskite-based photovoltaic and optoelectronic devices
Halide perovskites have had a huge impact on different fields in the last decade due to their versatility and amazing optoelectronic properties. However, there are still some issues to improve towards their future utilization ...
New developments to refine target, suspect and non-target screening strategies for comprehensive monitoring of the aquatic environment
The amount of organic micropollutants (OMP) currently being released to the aquatic environment is incommensurable. Thus, different analytical strategies were developed over the recent years to monitor the occurrence of ...
Investigação teórico-experimental do efeito da dopagem nas propriedades estruturais e eletrônicas do óxido de índio
En el presente trabajo de se ha investigado la influencia de la inserción de cationes La3+ y Pd2+ en las propiedades estructurales y electrónicas del In2O3, aclarando cómo estas modificaciones afectan a la actividad del ...
Pyrylium salts for bioimaging, sensing and solid-state emission
The thesis entitled "Pyrylium salts for bioimaging, sensing and solid-state emission" is structured in 7 chapters that cover different aspects related to several applications of pyrylium salts. Two chapters correspond to ...
Deciphering mechanisms underlying Mycorrhizal Induced Resistance in tomato plants
En esta tesis doctoral he tratado de descifrar algunos de los mecanismos tras la Resistencia Inducida por Micorrizas (MIR). Las plantas micorrizadas son más sensibles y perciben más rápido un futuro estrés. Esto está ...
Desenvolvimento de Novas Tecnologias Baseadas em Materiais Biocidas
a-Ag2WO4, which already shows biocidal activity, when modified by electrons or femtosecond laser increases its biocidal activity up to 32x, against resistant bacteria and fungi due to the generated metal-semiconductor ...
Global geometry of surfaces defined by non-positive and negative at infinity valuations
We consider plane divisorial valuations of Hirzebruch surfaces and introduce the concepts of non-positivity and negativity at infinity. We prove that the surfaces given by valuations of the last types have nice global and ...
Investigación de residuos de plaguicidas y fármacos en aguas medioambientales. Estudio de la eliminación de fármacos en una estación convencional de tratamiento de aguas residuales
La contaminación del medio ambiente está estrechamente ligada a las actividades antropogénicas. Los plaguicidas utilizados en la agricultura, terminan llegando al aire, suelo y agua. Las estaciones depuradoras de aguas ...
Tetrametallic (Gold, Iridium and Rhaodium) complexes based on N-Heterocyclic carbenes. From luminescent properties to supramolecular assemblies
The research carried out in this doctoral thesis can be summarized as the the preparation of different multimetallic complexes containing N-heterocylic carbene (NHC) ligands. In this aim, the main objective is to obtain ...
Molecular nanogels as nanocarriers. Intracellular transport of photosensitizers and nitric oxide probes
The preparation of molecular nanogels is reported in this thesis. These new nanoparticles, formed by low molecular weight gelators, represent an exciting alternative to their polymeric counterparts considering their intrinsic ...
Neuroscience in algebraic problem solving: Studying the reversal error
En aquest treball s’ha aportat coneixement a la societat d’un dels errors més comuns durant la resolució de problemas matemàtics, com és l’error d’inversió (EI). A més s’ha aportat coneixement a tres grans camps com son ...
Mathematical Methods to Predict the Dynamic Shape Evolution of Cancer Growth based on Spatio-Temporal Bayesian and Geometrical Models
The aim of this research is to observe the dynamics of cancer tumors and to develop and implement new methods and algorithms for prediction of tumor growth. I offer some tools to help physicians for a better understanding ...
Application of advanced mass spectrometric techniques for the identification, metabolic characterisation and toxicological analysis of new psychoactive substances
This Doctoral Thesis presents an in-depth investigation on NPS from the analytical chemistry point of view, being structured in three blocks. The first is focused on the analytical characterisation of different compounds, ...
Nickel and palladium supramolecular organometallic complexes based on NHC-ligands with polyaromatic moieties for host-guest chemistry studies
Se ha obtenido una nueva familia de cuatro Complejos Organometálicos Supramoleculares (SOCs) basados en pireno. Dentro de los cuales se ha desarrollado un nuevo receptor de PAH, capaz de discernir entre los diferentes PAH ...
Espectrometría de masas de dilución isotópica y deconvolución de perfiles isotópicos aplicada a problemas complejos: Determinación de esteroides en muestras clínicas y drogas en aguas residuales
En la presente tesis se presenta una cuantificación alternativa basada en IDMS: la deconvolución de perfiles isotópicos (IPD). Si bien es una técnica ampliamente utilizada en estudios de especiación, su uso para análisis ...
