Universitat de Barcelona
Now showing items 10635-10654 of 11039
[eng] Transition metal carbides (TMCs) have acquired a wide potential as a green chemistry catalysts. Their relatively high abundance and their catalytic performance makes them great candidates to replace scarce and pollutant ...
The aim of this Ph.D. thesis is the synthesis and characterization of nanoparticles to understand and optimize their macroscopic properties. The manuscript is divided into seven chapters. Chapter 1 is a general introduction ...
We study the formation and spreading of a turbulent jet of bubbles in microgravity. This has been analyzed from the recordings obtained in previous experimental campaigns of microgravity. Results have been compared with a ...
Avui en dia ningú posa en dubte que l’activitat turística ha de ser una pràctica sostenible que contribueixi al desenvolupament econòmic, l’equitat social, la revalorització cultural i la preservació de l’entorn. Tanmateix, ...
Esta pesquisa tem como objetivo elaborar um estudo sobre o patrimônio cultural e o turismo na cidade de Pelotas no sul do Brasil enfocando a importância do patrimônio para o desenvolvimento do turismo cultural. A cidade ...
Tomando como estudio de caso a Cataluña, el principal propósito de la tesis es el de analizar desde la geografía las acciones, relaciones e interacciones de los actores involucrados en la cadena de abastecimiento y ...
De todos es sabido el auge que ha experimentado la actividad turística en las últimas décadas. La época de la industria ha dado paso a la edad de los servicios, las tecnologías, la información. El hombre tiene cada vez más ...
Este trabajo pretende una aportación al conocimiento de las transformaciones territoriales del litoral tamaulipeco, a través del análisis sistémico de la relación territorio – en el cuerpo del documento, se exponen diversas ...
Voltage-gated K channels (Kv) is large family of channels that are expressed in both excitable and non-excitable cells. In excitable cells they contribute to the control of resting membrane potential and action potentials ...
[spa] El objeto principal de este análisis es el tratamiento de la protección integral a la maternidad dispensada por el Derecho del Trabajo y de la Seguridad Social, a través de las figuras de la suspensión del contrato ...
El régimen legal de las operaciones de modificación estructural de las sociedades de capital debe incluir los mecanismos de tutela que permitan proteger el interés de los socios de las compañías intervinientes. Este interés ...
Electronic machines and computers have experienced a huge development during the last four decades, mainly thanks to the continuous scaling down of the hardware responsible of information processing and storage (i.e. ...
This thesis examines the question of environmental dilemmas from both a local and a global perspective. It explores the open question of cooperation in the climate commons and provides evidence in favor of a key role of ...
The controlled-source electromagnetics (CSEM) and magnetotellurics (MT) methods are common geophysical tools for imaging the Earth's electrical interior. To appreciate measured data, both methods require forward and inverse ...
Monoamine Neurotransmitter diseases are a rare group of inherited disorders of metabolism that encompass 12 different genetic defects leading to abnormal dopamine and/or serotonin brain homeostasis. They correspond to ...
The subject of this thesis lies at the junction of mainly three topics: construction of large families of Arithmetically Cohen-Macaulay indecomposable vector bundles on a given projective variety X, the shape (i.e, the ...
This thesis presents the results of two research studies related to the physiological demands, the energy balance and the muscle damage induced by an ultra-endurance triathlon. The first study of this thesis examined the ...
Calcareous microfossils are not always present in marine or lacustrine sediments owing to unfavourable ecological or post-depositional conditions. These non-carbonated sediments sometimes contain abundant biogenic silica, ...
[por] O presente trabalho de pesquisa se inicia a partir dos questionamentos que realizo sobre a minha história de vida, em relaçao ao meu intenso interesse por música durante a infancia, seguido de diversos desdobramentos ...
DE LA TESIS:<br/><br/>El mundo económico actual está inmerso en un proceso de globalización, caracterizado por la existencia en la mayoría de los sectores de una demanda global y una oferta concentrada en unas pocas empresas ...
