Análisis experimental de la influencia de la velocidad de aplicación de la carga, en los ensayos estáticos, y de la magnitud de la carga máxina, en los dinámicos, en el comportamiento in vitro de los tornillos interferenciales y de un nuevo dispositivo expansor radial para la fijación ósea de injertos de LCA de la rodilla

El primer objetivo de este trabajo consite en rediseñar un nuevo sistema defijación del injerto de LCA, basado en la expansión radial, partiendo del desarrollo en el D.I.M de la ULPGC. El segundo objetivo es validar experimentalmente este dispositivo medienat ensayos, en diferentes medios, comparando los resultados con el dispositivo más utilizado en la actualidad de acción interferencial. Se llega a la conclusión de que el tornillo de expansión precisa una mayor fuerza y de un mayor número de ciclos para la extracción del implante , culminando el objetivo básico de la tesis de validar experimentalmente el dispositivo.

Descripción y evaluación del entrenamiento psicológico de una deportista de regata clase laser radial

[ES] El objetivo de este trabajo es presentar el entrenamiento psicológico realizado con una regatista para la preparación de la fase de clasificación para los Juegos Olímpicos de Londres 2012, y analizar la percepción de mejora psicológica por parte de la regatista y su valoración del entrenamiento realizado.

Microextraction techniques coupled to liquid chromatography with mass spectrometry for the determination of organic micropollutants in environmental water samples

[EN]Until recently, sample preparation was carried out using traditional techniques, such as liquid–liquid extraction (LLE), that use large volumes of organic solvents. Solid-phase extraction (SPE) uses much less solvent than LLE, although the volume can still be significant. These preparation methods are expensive, time-consuming and environmentally unfriendly. Recently, a great effort has been made to develop new analytical methodologies able to perform direct analyses using miniaturised equipment, thereby achieving high enrichment factors, minimising solvent consumption and reducing waste. These microextraction techniques improve the performance during sample preparation, particularly in complex water environmental samples, such as wastewaters, surface and ground waters, tap waters, sea and river waters. Liquid chromatography coupled to tandem mass spectrometry (LC/MS/MS) and time-of-flight mass spectrometric (TOF/MS) techniques can be used when analysing a broad range of organic micropollutants. Before separating and detecting these compounds in environmental samples, the target analytes must be extracted and pre-concentrated to make them detectable. In this work, we review the most recent applications of microextraction preparation techniques in different water environmental matrices to determine organic micropollutants: solid-phase microextraction SPME, in-tube solid-phase microextraction (IT-SPME), stir bar sorptive extraction (SBSE) and liquid-phase microextraction (LPME). Several groups of compounds are considered organic micropollutants because these are being released continuously into the environment. Many of these compounds are considered emerging contaminants. These analytes are generally compounds that are not covered by the existing regulations and are now detected more frequently in different environmental compartments. Pharmaceuticals, surfactants, personal care products and other chemicals are considered micropollutants. These compounds must be monitored because, although they are detected in low concentrations, they might be harmful toward ecosystems.