Universitat Politècnica de Catalunya
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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 ...
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) ...
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 ...
Aquest treball està dedicat a l'estudi, tant des del punt de vista termodinàmic com cristal·logràfic, dels aliatges moleculars binaris en fase plàstica d'alguns derivats del neopentà.<br/>Mitjançant el tensor de dilatació ...
Promising technological applications of two-phase flows in space have captured the increasing interest of the space sector, provoking a strong demand for more fundamental knowledge. Great efforts have been made in recent ...
Diffusion refers to numerous phenomena, by which particles and bodies of all kinds move throughout any kind of material, has emerged as one of the most prominent subjects in the study of complex systems. Motivated by the ...
Amb aquesta tesi s'intenta aportar la informació necessària per a millorar el coneixement dels camps de radiació ionitzant ambiental d'origen natural, i contribuir així a la millora de la gestió de les estacions de vigilància ...
A two-dimensional axisymmetric implementation of the smoothed particle hydrodynamics (SPH) technique, called for short AxisSPH, has been described in this thesis, along with a number of basic tests and realistic applications. ...
The technological era that we live in is sometimes described as the Information Age. Colossal amounts of data are generated every day and considerable effort is put into creating technologies to process, store and transmit ...
Este trabajo está dividido en dos partes claramente diferenciadas, ambas dentro de la Física no lineal.<br/>La primera es un estudio de las inestabilidades de la corriente en semiconductores extrinsecos, incluyendo ...
Two-phase flows are encountered in a wide range of applications both on-ground and in space. The dynamics of such flows in the absence of gravity is completely different from that in normal gravity due to the absence of ...
La forta exigència de qualitat a que són sotmesos els productes actuals fa que els processos d'inspecció i control industrial ocupin, cada vegada més, un lloc destacat en la seva fabricació. La indústria relacionada amb ...
This research work has been developed in order to contribute to the knowledge of radioactive aerosol characteristics and their behaviour in the atmosphere. The study was carried out in the city of Barcelona. The Instituto ...
In this research work it has been implemented with the semiconductor characterization, base basically in the thermoelectric structure develop with Skutterudite nanostructures, under different manufacturing process, specially ...
El control de la microestructura necesita la optimización de las condiciones del conformado en caliente. La recristalización dinámica es el fenómeno protagonista durante un proceso termomecánico, por lo que tiene un interés ...
In the past century, experimental discoveries have witnessed phenomena in Nature which challenge our everyday classical intuition. In order to explain these facts, quantum theory was developed, which so far has been able ...
This Thesis is devoted to the construction of global climate networks (CNs) built from time series -surface air temperature anomalies (SAT)- using nonlinear analysis. Several information theory measures have been used ...
The development of new materials impacts on all branches of engineering and, in particular, in aerospace engineering. Metallic glasses (MG) are relatively newcomers to the world of materials science and have excellent ...
(English) Collective behavior in animals is ubiquitous in nature. It emerges from the self-organization of interacting individuals within a group. What makes collective behavior so interesting is that the behavior of the ...
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 ...
