Development of the heterogeneous catalysts for the production of levulinic acid from furfuryl alcohol

207 p.

A New Type of Coincidence and Common Fixed Point Theorem with Applications

Coincidence and common fixed point theorems for a class of 'Ciric-Suzuki hybrid contractions involving a multivalued and two single-valued maps in a metric space are obtained. Some applications including the existence of a common solution for certain class of functional equations arising in a dynamic programming are also discussed..

Copia de una carta remitida por el Secretario de Estado de la Santa Sede al obispo Mateo Múgica.

Fecha: 30-3-1939 (>1970 copia) / Unidad de instalación: Carpeta 45 - Expediente 2-6 / Nº de pág.: 1 (mecanografiada)

Practical applications of the likelihood, time transcendence and metadata in virtual models of heritage elements

Contributed to: III Bienal de Restauración Monumental: "Sobre la des-restauración" (Sevilla, Spain, Nov 23-25, 2006)

Introducción al análisis financiero de la empresa

Duración (en horas): De 41 a 50 horas. Destinatario: Estudiante y Docente

Best Proximity Points of Generalized Semicyclic Impulsive Self-Mappings: Applications to Impulsive Differential and Difference Equations

This paper is devoted to the study of convergence properties of distances between points and the existence and uniqueness of best proximity and fixed points of the so-called semicyclic impulsive self-mappings on the union of a number of nonempty subsets in metric spaces. The convergences of distances between consecutive iterated points are studied in metric spaces, while those associated with convergence to best proximity points are set in uniformly convex Banach spaces which are simultaneously complete metric spaces. The concept of semicyclic self-mappings generalizes the well-known one of cyclic ones in the sense that the iterated sequences built through such mappings are allowed to have images located in the same subset as their pre-image. The self-mappings under study might be in the most general case impulsive in the sense that they are composite mappings consisting of two self-mappings, and one of them is eventually discontinuous. Thus, the developed formalism can be applied to the study of stability of a class of impulsive differential equations and that of their discrete counterparts. Some application examples to impulsive differential equations are also given.

Designing High Performance Factory Automation Applications on Top of DDS

13 p.

Temperature-and pH-Sensitive Nanohydrogels of Poly(N-Isopropylacrylamide) for Food Packaging Applications: Modelling the Swelling-Collapse Behaviour

Temperature-sensitive poly(N-isopropylacrylamide) (PNIPA) nanohydrogels were synthesized by nanoemulsion polymerization in water-in-oil systems. Several cross-linking degrees and the incorporation of acrylic acid as comonomer at different concentrations were tested to produce nanohydrogels with a wide range of properties. The physicochemical properties of PNIPA nanohydrogels, and their relationship with the swelling-collapse behaviour, were studied to evaluate the suitability of PNIPA nanoparticles as smart delivery systems (for active packaging). The swelling-collapse transition was analyzed by the change in the optical properties of PNIPA nanohydrogels using ultraviolet-visible spectroscopy. The thermodynamic parameters associated with the nanohydrogels collapse were calculated using a mathematical approach based on the van't Hoff analysis, assuming a two-state equilibrium (swollen to collapsed). A mathematical model is proposed to predict both the thermally induced collapse, and the collapse induced by the simultaneous action of two factors (temperature and pH, or temperature and organic solvent concentration). Finally, van't Hoff analysis was compared with differential scanning calorimetry. The results obtained allow us to solve the problem of determining the molecular weight of the structural repeating unit in cross-linked NIPA polymers, which, as we show, can be estimated from the ratio of the molar heat capacity (obtained from the van't Hoff analysis) to the specific heat capacity (obtained from calorimetric measurements).

Choice under Risk : Theory and Applications

Es útil para estudiantes de postgrado (Master y Doctorado) en cursos de Economía o de Microeconomía en los que se analicen problemas de Decisión en condiciones de Riesgo o Incertidumbre. El documento comienza explicando la Teoría de la Utilidad Esperada. A continuación se estudian la aversión al riesgo, los coeficientes de aversión absoluta y relativa al riesgo, la relación “más averso que” entre agentes económicos y los efectos riqueza sobre las decisiones en algunas relaciones de preferencia utilizadas frecuentemente en el análisis económico. La sección 4 se centra en la comparación entre alternativas arriesgadas en términos de rendimiento y riesgo, considerando la dominancia estocástica de primer y segundo orden y algunas extensiones posteriores de esas relaciones de orden. El documento concluye con doce ejercicios resueltos en los que se aplican los conceptos y resultados expuestos en las secciones anteriores a problemas de decisión en varios contextos

Development of new applications of inductively coupled plasma mass spectrometry (ICP-MS) hyphenated with different sample introduction systems

225 p. : il. Texto en español con conclusiones en inglés

Navarrenx. Piscinas junto al río.

El programa propuesto por el Tribunal del TFG para la mención de Urbanismo, Paisaje y Territorio consiste en la realización de unas piscinas naturales de agua de río con sus edificaciones de apoyo (vestuarios, aseos, sala polivalente, taberna y almacenaje) y un albergue de 10 habitaciones dobles y grupales, en la ladera al suroeste de la villa de Navarrenx, en el espacio exterior a la ciudad entre la fortificación y el rio Gave D’Oloron.

Desarrollo de una herramienta virtual destinada al diseño de una plataforma robótica reconfigurable.

[ES]Este proyecto tiene como objeto aumentar el conocimiento concerniente a mecanismos robóticos reconfigurables, así como ponerlo en práctica. Estos mecanismos pueden lograr rápidas transiciones y son capaces de adaptarse a sí mismos a muchos entornos diferentes, conduciendo a una reducción de costes y requerimientos de espacio. Para ello, se estudia el estado del arte, de manera que se pueda reunir información sobre las principales aplicaciones y oportunidades que este campo ofrece en diferentes áreas. A continuación, se requiere llevar a cabo un análisis cinemático de un robot específico, y junto a métodos de planificación de trayectorias, su implementación en un software gráfico para simular su movimiento. La herramienta de software “Matlab” va a ser la que permitirá llevar a cabo toda la programación y representación a lo largo de todo el proyecto.

Coincidence and common fixed point theorems for Suzuki type hybrid contractions and applications

Coincidence and common fixed point theorems for a class of Suzuki hybrid contractions involving two pairs of single-valued and multivalued maps in a metric space are obtained. In addition, the existence of a common solution for a certain class of functional equations arising in a dynamic programming is also discussed.

Similitudes y diferencias en el proceso de evolución tipológica del Musteriense al Auriñaciense en la cueva de Gatzarria (País Vasco)

[ES] En relación al debate sobre la posición del Castelperroniense en el proceso de transformación del Paleolítico medio al superior, el nivel Cjn3 de Gatzarria, frente a la extendida opinión que hace de ese complejo industrial un episodio terminal del Paleolítico medio, constituye el conjunto tipológico de base de la secuencia filética auriñaciense en este importante yacimiento pirenaico. En efecto, los diversos análisis estadísticos aplicados sobre variadas estructuras tipológicas de la serie estratigráfica completa y, más específicamente, de los tecnocomplejos más implicados en ese proceso de cambio, ponen reiteradamente de manifiesto la vinculación directa de la serie castelperroniense con el episodio protoauriñaciense antiguo de Cjn2, y a través de éste con el desarrollo general del proceso filético leptolítico auriñacoide, así como su manifiesta discontinuidad con el repertorio musteriense de Cj. Por consiguiente, en el caso de Gatzarria, parecería más oportuno hablar de ruptura que de transición en el proceso de evolución tipológica entre los complejos industriales musteroides y auriñacoides.

Temperature-and pH-Sensitive Nanohydrogels of Poly(N-Isopropylacrylamide) for Food Packaging Applications: Modelling the Swelling-Collapse Behaviour

Temperature-sensitive poly(N-isopropylacrylamide) (PNIPA) nanohydrogels were synthesized by nanoemulsion polymerization in water-in-oil systems. Several cross-linking degrees and the incorporation of acrylic acid as comonomer at different concentrations were tested to produce nanohydrogels with a wide range of properties. The physicochemical properties of PNIPA nanohydrogels, and their relationship with the swelling-collapse behaviour, were studied to evaluate the suitability of PNIPA nanoparticles as smart delivery systems (for active packaging). The swelling-collapse transition was analyzed by the change in the optical properties of PNIPA nanohydrogels using ultraviolet-visible spectroscopy. The thermodynamic parameters associated with the nanohydrogels collapse were calculated using a mathematical approach based on the van't Hoff analysis, assuming a two-state equilibrium (swollen to collapsed). A mathematical model is proposed to predict both the thermally induced collapse, and the collapse induced by the simultaneous action of two factors (temperature and pH, or temperature and organic solvent concentration). Finally, van't Hoff analysis was compared with differential scanning calorimetry. The results obtained allow us to solve the problem of determining the molecular weight of the structural repeating unit in cross-linked NIPA polymers, which, as we show, can be estimated from the ratio of the molar heat capacity (obtained from the van't Hoff analysis) to the specific heat capacity (obtained from calorimetric measurements).