Universitat de Barcelona
Now showing items 37-56 of 64
The interaction between magnetic nanoparticles and high frequencies, such as microwaves or terahertz waves, is one of the most active field of research, with interesting applications in the screening of electromagnetic ...
The purpose of this thesis is to put forth and present a series of new applications of the gauge/string duality to areas of high energy physics and condensed matter physics. The contributions showcased in this thesis amount ...
In this thesis we have studied the influence of transport mechanisms on the adsorption kinetics of colloidal suspensions, as well as in the distribution of colloidal particles at the adsorbed layer. Adsorption of colloidal ...
The goal of this thesis is to study the large scale structure of the Universe from a theoretical point of view. In particular, the different chapters of this thesis focus on developing statistic tools to improve the ...
Complex networks grow subject to structural constraints which affect their measurable properties. Assessing the effect that such constraints impose on their observables is thus a crucial aspect to be taken into account in ...
The aim of this thesis was to study quantum phenomena and excitation modes in type-I superconductors and magnetic vortices. The intermediate state in type-I superconductors is characterized by the gradual penetration ...
En la presente tesis se han tratado los siguientes aspectos: 1,- Se ha reformulado la presentación de la teoría de espinores consiguiendo una única definición de espinor que da énfasis al observador y matiza el papel ...
The basic aim of the thesis is the study of the propagation of particles and quasiparticles in non-trivial backgrounds from the quantum field theory point of view. By "non-trivial background" we mean either a non-vacuum ...
The holographic duality between gauge theories and string theories has opened a new door to access the strongly coupled regime of quantum field theories and offers, at the same time, a completely new way to ...
Esta memoria presenta el estudio de las propiedades magnéticas de dos sistemas físicos pertenecientes a lo que puede considerarse una nueva generación de materiales, los constituidos por entidades básicas de tamaño ...
Protein structure, dynamics and function, are inseparable in order to understand the mechanisms of Life at the molecular level. From the structure comes dynamics, and from dynamics many, if not all, protein functions. ...
During the last decades, it has become clear that systems formed by many interacting parts show emergent dynamical properties which are inherently related to the topology of the underlying pattern of connections among the ...
This essay is devoted to the search for monochromatic gravitational wave signals in the data of the cryogenic detector "Explorer". With this aim several filtering procedures have been designed and applied. Nevertheless, ...
La història de la simulació de sistemes de N cossos pot resumir-se breument dient que aquesta ha anat evolucionant dels primers estudis de líquids simples a l'estudi de sistemes cada vegada més complexes (sals foses, líquids ...
L'anàlisi des del punt de vista dinàmic d'un sistema format per un conjunt de partícules que interactuen entre sí pot realitzar-se mitjançant diferents mètodes de simulació (Allen et al., 1987). D'entre tots ells, el més ...
In the field of biophysics, the study of the thermodynamic characteristics of biomolecules, such as DNA, RNA or proteins, allows us to understand more about the building blocks of life. The thermodynamic characterization ...
Els treballs presentats en aquesta tesi fan referència a sistemes amb estructures d’escales nanomètriques. L’estructura d'aquests sistemes s’obté mitjançant la formació de monocapes de Langmuir, dipositant dissolucions de ...
En aquest treball de tesi doctoral es presenta l’estudi del magnetisme de diferents materials de naturalesa metal•lorgànica emmarcats en diferents famílies. Per un cantó, tenim molècules d’alt espí amb anisotropia magnètica ...
[eng] Molecular biophysics is a scientific discipline that studies biomolecules. This discipline has experienced a revolution thanks to the development of single- molecule techniques. These techniques allows us to obtain ...
Water is commonly associated with life. This substance affects the living beings in countless aspects and length scales, ranging from molecular biology to climatology. Water exhibits a long series of anomalous behaviors. ...
