Direct numerical simulations of interface dynamics to link capillary pressure and total surface energy

The flow of two immiscible fluids through a porous medium depends on the complex interplay between gravity, capillarity, and viscous forces. The interaction between these forces and the geometry of the medium gives rise to a variety of complex flow regimes that are difficult to describe using continuum models. Although a number of pore-scale models have been employed, a careful investigation of the macroscopic effects of pore-scale processes requires methods based on conservation principles in order to reduce the number of modeling assumptions. In this work we perform direct numerical simulations of drainage by solving Navier-Stokes equations in the pore space and employing the Volume Of Fluid (VOF) method to track the evolution of the fluid-fluid interface. After demonstrating that the method is able to deal with large viscosity contrasts and model the transition from stable flow to viscous fingering, we focus on the macroscopic capillary pressure and we compare different definitions of this quantity under quasi-static and dynamic conditions. We show that the difference between the intrinsic phase-average pressures, which is commonly used as definition of Darcy-scale capillary pressure, is subject to several limitations and it is not accurate in presence of viscous effects or trapping. In contrast, a definition based on the variation of the total surface energy provides an accurate estimate of the macroscopic capillary pressure. This definition, which links the capillary pressure to its physical origin, allows a better separation of viscous effects and does not depend on the presence of trapped fluid clusters.

Let's K-map play : Juego de aprendizaje de Karnaugh Maps para móvil

En este informe se describe el trabajo de fin de máster, centrado en el estudio de la gamificación como herramienta de aprendizaje aplicada a dispositivos móviles. Se ha realizado una revisión de los artículos científicos que tratan sobre el tema de la gamificación como herramienta educativa, para terminar el trabajo desarrollando un prototipo de juego para el aprendizaje de mapas de Karnaugh. Se ha optado por un desarrollo multiplataforma y se han revisado los frameworks de desarrollo más populares para desarrollo móvil multiplataforma, así como los motores de juegos aplicables a este caso. Tras la implementación, se ha probado el prototipo en dos sistemas operativos móviles libres: Android y Firefox OS.

The direct peroxisome proliferator-activated receptor target fasting-induced adipose factor (FIAF/PGAR/ANGPTL4) is present in blood plasma as a truncated protein that is increased by fenofibrate treatment.

The fasting-induced adipose factor (FIAF, ANGPTL4, PGAR, HFARP) was previously identified as a novel adipocytokine that was up-regulated by fasting, by peroxisome proliferator-activated receptor agonists, and by hypoxia. To further characterize FIAF, we studied regulation of FIAF mRNA and protein in liver and adipose cell lines as well as in human and mouse plasma. Expression of FIAF mRNA was up-regulated by peroxisome proliferator-activated receptor alpha (PPARalpha) and PPARbeta/delta agonists in rat and human hepatoma cell lines and by PPARgamma and PPARbeta/delta agonists in mouse and human adipocytes. Transactivation, chromatin immunoprecipitation, and gel shift experiments identified a functional PPAR response element within intron 3 of the FIAF gene. At the protein level, in human and mouse blood plasma, FIAF was found to be present both as the native protein and in a truncated form. Differentiation of mouse 3T3-L1 adipocytes was associated with the production of truncated FIAF, whereas in human white adipose tissue and SGBS adipocytes, only native FIAF could be detected. Interestingly, truncated FIAF was produced by human liver. Treatment with fenofibrate, a potent PPARalpha agonist, markedly increased plasma levels of truncated FIAF, but not native FIAF, in humans. Levels of both truncated and native FIAF showed marked interindividual variation but were not associated with body mass index and were not influenced by prolonged semistarvation. Together, these data suggest that FIAF, similar to other adipocytokines such as adiponectin, may partially exert its function via a truncated form.

Kansan suora osallistuminen kansalliseen päätöksentekoon kansanäänestyksen kautta

English summary: Direct participation of the people in national decision-making by means of the referendum (s.1279)

TUTOC : Aplicació mòbil Android per a tutors

Aplicació que serveix d'ajuda als tutors de la universitat Oberta de Catalunya mitjançant l'accés al campus.

Desarrollo de videojuegos para Android con libGDX : Fling the sheep

Este proyecto se quiere centrar en el desarrollo de un videojuego de tipo casual para móviles Android con el framework libGDX. Estos son un tipo de videojuegos dirigidos a un público de jugadores casuales.

Truc per a Android

Treball final de carrera de l'Enginyeria Tècnica en Informàtica de Sistemes corresponent a la implementació del joc de cartes de baralla espanyola "el Truc" per a Android.

InfoEscola per a dispositius mòbils amb Android

Desenvolupament d'una eina de comunicació en HTML5 per a dispositius mòbils amb Android entre pares/mares i tutors pel seguiment de l'alumne.

Erelis: Una aplicació per a l'estalvi de bateria per a la plataforma Android

Disseny i implementació d'una aplicació per a la plataforma Android per a l'estalvi de bateria en aquests telèfons intel·ligents.

GeoTools-Android. Eines geogràfiques per Android

El present Treball Final de Carrera (TFC), basat en el tema dels Sistemes d'informació Geogràfica i Geotelemàtica, es centra en les diverses aplicacions geoespacials per al sistema operatiu Android.

GeoTools-Android: eines geogràfiques per Android

Aquest treball tracta de l'estat actual de les aplicacions sobre sistemes d'informació geogràfica per Android.