Carme Vidal i la recerca educativa

La recerca ha de tenir ben clars els seus objectius: coneixer quina és la realitat, i proposar petites millores, que facinmés rendibles els mitjans que s'hi aboquen,que facin més felices i mes lliures les personesimplicades, que garanteixin l'acomplimentdels objectius pretesos i que heneficiïn el màxim nombre possible d'homes i dones

La Geografia política en Vidal de la Blanche: la France de l'Est

En 1979 Y. Lacoste a publié dans la revue "Hérodote" un article surprenant intitulé "A bas Vidal ... Viva Vidal" qui exhumait la dernière œuvre de Vidal de la Blache: La france de I'Est (Loraine-Alsace) (1917). Dans cet article, Lacoste faisait l'éloge de certains aspects économiques, sociaux et surtout géopolitiques, non traités dans le traditionnel modèle vidalien. Nous tenterons d'approfondir dans cet essai l'une des questions qu'a induite l'article de Lacoste, a savoir la place qu'occupe la Géographie Politique dans l'école vidalienne. Les différents travaux et actions des disciples de Vidal ont fait preuve d’un grand intérêt pour la Géographie Politique en abandonnant provisoirement le schéma descriptif prope à la géographie régionale française. À la fin de la première guerre mondiale, le problème frontalier de l'Alsace-Loraine devient l'axe central de La France de I'Est; On a fait ressortir les éléments géopolitiques de cette œuvre a fin de démontrer que l'aspect géopolitique de l'école vidalienne est méconnu

Lluis Marià Vidal i la geologia gironina

Sobre la figura de Lluís Marià Vidal i Carreras, enginyer de mines, geòleg i president del Centre Excursionista de Catalunya.

Las capas de 'Bulimus gerundensis' Vidal de la región de Utiel (Valencia)

Se da cuenta de nuevos hallazgos del Bulimus gerundensis, Vidal, en la región de Utiel, estudiandose su situación estratigráfica, su relación con el Microcodium y su posible utilización paleogeográfica.

Els singulars anecdòtics de Plàcid Vidal: plurals i categòrics

El treball té el propòsit de revalorar l’obra de Plàcid Vidal, per tal de situar-la en el lloc adient dins el gènere de la literatura memorialística, atès que Vidal escriu Els singulars anecdòtics (1920 i, en edició ampliada, 1925) amb la voluntat de deixar un testimoni d’un període cultural –que situa entre 1898 i 1909–, i conscient que recorre a un gènere poc valorat aleshores a Catalunya: el de la literatura del jo. L’estudi analitza la tècnica emprada per Plàcid Vidal per fer les siluetes, la recepció de què és objecte el llibre, i les referències que se n’han fet posteriorment

Atomic Ordering and Martensitic Transitions in Cu-Zn-Al Shape Memory Alloys

We present results from both, calorimetric and dilatometric studies of the isothermal ordering process taking place in a Cu-Zn-Al shape memory alloy after quenches from Tq temperatures ranging from 350 K to 1200 K. The dissipated energy and the length variations of the system are obtained during the process. The change of these quantities in the whole process have been compared with the difference [MATH] between Ms, measured after the relaxation and Ms measured just after the quench. We obtain that these three quantities present, as a function of Tq, the same qualitative behaviour. These changes are then associated with changes of the L21 ordering after the quench in the system. The relaxational process does not follow a single exponential decay. Instead, a continuous slowing down is observed. A relaxation time [MATH] has been defined to characterize the relaxation rate. We show that [MATH] depends on both the annealing and the quenching (Tq [MATH] 800 K) temperatures through an Arrhenius law.

Bioavailability of sinking organic matter in the Blanes canyon and the adjacent open slope (NW Mediterranean Sea)

Submarine canyons are sites of intense energy and material exchange between the shelf and the deep adjacent basins. To test the hypothesis that active submarine canyons represent preferential conduits of available food for the deep-sea benthos, two mooring lines were deployed at 1200 m depth from November 2008 to November 2009 inside the Blanes canyon and on the adjacent open slope (Catalan Margin, NW Mediterranean Sea). We investigated the fluxes, biochemical composition and food quality of sinking organic carbon (OC). OC fluxes in the canyon and the open slope varied among sampling periods, though not onsistently in the two sites. In particular, while in the open slope the highest OC fluxes were observed in August 2009, in the canyon the highest OC fluxes occurred in AprilMay 2009. For almost the entire study period, the OC fluxes in the canyon were significantly higher than those in the open slope, whereas OC contents of sinking particles collected in the open slope were consistently higher than those in the canyon. This result confirms that submarine canyons are effective conveyors of OC to the deep sea. Particles transferred to the deep sea floor through the canyons are predominantly of inorganic origin, significantly higher than that reaching the open slope at a similar water depth. Using multivariate statistical tests, two major clusters of sampling periods were identified: one in the canyon that grouped trap samples collected in December 2008, oncurrently with the occurrence of a major storm at the sea surface, and associated with increased fluxes of nutritionally available particles from the upper shelf. Another cluster grouped samples from both the canyon and the open slope collected in March 2009, concurrently with the occurrence of the seasonal phytoplankton bloom at the sea surface, and associated with increased fluxes of total phytopigments. Our results confirm the key ecological role of submarine canyons for the functioning of deep-sea ecosystems, and highlight the importance of canyons in linking episodic storms and primary production occurring at the sea surface to the deep sea floor.

Proyecto de instalación de depuradora para el tratamiento de 1200 m3/día de aguas residuales procedentes de industria de matadero de aves y sala de despiece anexa situados en el T.M. de Bellvís (Pla d’Urgell)

Se considera existente una Unidad Industrial Agraria de Matadero y Sala de Despiece Anexa que consecuencia de los incrementos de matanza y despiece precisa una nueva instalación de depuración de sus aguas residuales, dado que las actuales han quedado obsoletas y no permiten alcanzar los límites de vertido que impone la legislación vigente. Se redacta el presente proyecto en base a la solicitud de la licencia de obras del Proyecto de Instalación de Estación Depuradora de Aguas Residuales (EDAR) con capacidad de tratamiento de 1200 m3/día, que posteriormente se justifica. Dicho proyecto se contempla como un cambio no sustancial dado que se plantea como la sustitución de los equipos actuales de depuración por nuevos equipos que permitan adecuarse a las nuevas condiciones de vertido, mucho más estrictas que las autorizadas actualmente, sin que ello provoque ninguna modificación significativa en los aspectos ambientales y de definición de la actividad principal (matadero y Sala despiece) ya perfectamente legalizada desde el año 1990. Es fundamental indicar que se actúa sobre los equipos de depuración de aguas y tratamiento de fangos, siendo por tanto una sustitución sumamente positiva y que no implica un incremento en los residuos generados sino todo lo contrario. Por parte de Avícola del Pla. se proyecta la nueva EDAR en terrenos de su propiedad que dispone en las parcelas núm. 40 y 41 del polígono 08 de Bellvís.

Bioavailability of sinking organic matter in the Blanes canyon and the adjacent open slope (NW Mediterranean Sea)

Submarine canyons are sites of intense energy and material exchange between the shelf and the deep adjacent basins. To test the hypothesis that active submarine canyons represent preferential conduits of available food for the deep-sea benthos, two mooring lines were deployed at 1200 m depth from November 2008 to November 2009 inside the Blanes canyon and on the adjacent open slope (Catalan Margin, NW Mediterranean Sea). We investigated the fluxes, biochemical composition and food quality of sinking organic carbon (OC). OC fluxes in the canyon and the open slope varied among sampling periods, though not onsistently in the two sites. In particular, while in the open slope the highest OC fluxes were observed in August 2009, in the canyon the highest OC fluxes occurred in April-May 2009. For almost the entire study period, the OC fluxes in the canyon were significantly higher than those in the open slope, whereas OC contents of sinking particles collected in the open slope were consistently higher than those in the canyon. This result confirms that submarine canyons are effective conveyors of OC to the deep sea. Particles transferred to the deep sea floor through the canyons are predominantly of inorganic origin, significantly higher than that reaching the open slope at a similar water depth. Using multivariate statistical tests, two major clusters of sampling periods were identified: one in the canyon that grouped trap samples collected in December 2008, oncurrently with the occurrence of a major storm at the sea surface, and associated with increased fluxes of nutritionally available particles from the upper shelf. Another cluster grouped samples from both the canyon and the open slope collected in March 2009, concurrently with the occurrence of the seasonal phytoplankton bloom at the sea surface, and associated with increased fluxes of total phytopigments. Our results confirm the key ecological role of submarine canyons for the functioning of deep-sea ecosystems, and highlight the importance of canyons in linking episodic storms and primary production occurring at the sea surface to the deep sea floor.

Determination and characterization of quinolones in foodstuffs of animal origin by CE-UV, LC-UV, LC-Fl, LC-MS and LC-MS/MS

In this work methods for the multiresidue determination of the series of quinolones include in the European regulation in food of animal origin are de veloped and validated in line with Commission Decision 2002/657/EC in terms of linearity, decision limit, capability detection, precision and stability. Mult iresidue methods were established to allow the determination of quinolones covered by EU legislation in 2377/90/EC in muscle of chicken, turkey, pig and cow, plasma of cow and pig, liver of pig and milk of cow. First an extraction step was optimized and a SPE step was applied to clean!up and preconcentrate quinolones prior to their separation by CE or LC and determination by CE!UV, LC!UV, LC!Fl, LC!MS with different ion sources (ESI ,ApCI) and different mass analyser (Q, ToF) and LC!E SI!QqQ tandem mass spectrometry. The limits of quantification obtained are always lower than Maxim um Residue Limit (MRL) established by EU for quinolones in animal products and they can be applied to the control of quinolones in foodstuffs of animal origin . Finally the proposed methods were applied to determine quinolones in samples of turkey and pig muscle, pig plasma and milk of cow. Excellent quality parameters and reduced time of analysis were obtained when LC!ESI!MS/MS is used, although the others techniques presented too satisfactory results.

Societal metabolism of societies: the bifurcation between Spain and Ecuador

This paper presents an application of the Multiple-Scale Integrated Assessment of Societal Metabolism to the recent economic history of Ecuador and Spain. Understanding the relationship between the Gross Domestic Product (GDP) and the throughput of matter and energy over time in modern societies is crucial for understanding the sustainability predicament as it is linked to economic growth. When considering the dynamics of economic development, Spain was able to take a different path than Ecuador thanks to the different characteristics of its energy budget and other key variables. This and other changes are described using economic and biophysical variables (both extensive and intensive referring to different hierarchical levels). The representation of these parallel changes (on different levels and describable only using different variables) can be kept in coherence by adopting the frame provided by MSIASM.

Planta de producción de carbonato sódico

Aquest projecte presenta el procés de producció del carbonat sòdic a partir del mètode Solvay. Aquest procés es caracteritza perquè a partir de matèries primes molt bàsiques, com són el clorur sòdic i la pedra caliça, s'obté un producte de gran mercat, el carbonat sòdic. En el projecte s'estudien tant el disseny dels equips que seràn part del procès de producció com els sistemes de control utilitzats, impactes mediambientals que es puguin generar o l'avaluació econòmica de l'acceptació del procés en el mercat, entre d'altres.