Universitat de Barcelona
Mostrando ítems 1162-1181 de 11210
Rosmarinic acid (RA), an ester of caffeic acid and 3,4-dihydroxyphenyl lactic acid, is widely distributed in the plant kingdom, including Satureja khuzistanica, a threatened Iranian plant species. Interest in RA is growing ...
A consecuencia de la elevada versatilidad de sus propiedades, los tensioactivos pueden encontrase en diferentes productos de uso cotidiano, pero su posible toxicidad y falta de degradabilidad hacen que se les considere ...
A lo largo de este trabajo de investigación se van a analizar las raíces del concepto de bipolaridad y su relación con la idea de libertad tal y como ha sido desarrollada por el filósofo Rudolf Steiner. Comenzaremos con ...
The winter period is typically associated with harsh weather conditions and reduced food availability, which may lead to increased mortality. In birds, a common strategy to avoid such risks is to migrate to more favourable ...
Birds have been widely used as bioindicators. In this study we face the use of birds as bioindicators of metal pollution in two different scenarios of contamination: one that takes place in an aquatic environment, the Ebro ...
Circular migrations have played an important role in multiple migratory episodes in the past and present. They have also increasingly been a source of interest for political institutions. Based on the Triple Win theory, ...
However successful classical general relativity is, it faces non-normalizability problems at the quantum mechanical level. Nevertheless, it predicts the existence of black holes, which are thermal objects that are expected ...
Un tsunami és un seguit d'onades al mar causades per una ona de gran període T (entre 5 i 60 minuts) i de longitud d’ona L molt llarga (fins a 800 km). A alta mar tenen una altura d'ona H molt baixa (difícilment més de 3 ...
Cancer virotherapy with oncolytic adenoviruses represents a promising therapeutic approach due to the capacity of these viruses to infect and selectively kill tumor cells without damaging normal tissues. Although the ...
The work of this thesis is based on research on peptides able to cross the blood-brain barrier and their use as tools to enable the delivery of drugs into the brain. The blood-brain barrier (BBB) is a permeable but ...
INTRODUCCIÓ: El bloqueig de branca dreta (BBD) és una de les alteracions electrocardiogràfiques més freqüents. La significació clínica que pot tenir el BBD en pacients sans sense evidència de malaltia cardiovascular ...
¿Cómo resuelven los animales las discriminaciones espaciales o encuentran el camino a una meta situada en una determinada localización? O'Keefe y Nadel (1978) consideran que las ratas pueden aprender el camino hacia una ...
The primary topic of this thesis lies at the crossroads of Commutative Algebra and its interactions with Algebraic Geometry and Combinatorics. It is mainly focused around the following themes: I Defining equations ...
My dissertation aims at analyzing the impact of State intervention in Bolivia by looking at the long term evolution of Bolivian Public Finances, 1882-2007. My dissertation is compound by four different chapters. In the ...
This dissertation addresses the emergence of emotional involvement in the interaction with social robots. More specifically, we investigate the dynamics of children bonding with robotic pets to design robot based programs ...
Amb la consolidació d’un sistema educatiu comprensiu i obligatori fins als setze anys es fa evident el desencaix entre un grup d’adolescents i l’institut, entre l’escola i joves que abans de fer setze anys diuen no a ...
La presente tesis describe y analiza la serie de antologías de literatura fantástica realizadas por el autor argentino Jorge Luis Borges entre los años 1940 (fecha de la publicación de la selección Antología de la literatura ...
[eng] This thesis focuses on RNA, one of the most versatile molecules in biological systems, and how intermolecular interactions with ions and proteins govern RNA folding. On its way to biological function, RNA transits a ...
[cat] La present tesi pretén reflexionar sobre els canvis territorials i paisatgístics en dues zones de Catalunya rurals i forestals: Les Gavarres i la Catalunya Central, a través de la mirada de persones representatives ...
Bottled mineral water has managed to become a commodity and can be found virtually anywhere in the world. However, even if it is a very common and well recognized product, little it is known about its history, about how, ...
