Capas de Tormentas (tempestitas) en el Jurásico del Subbético Externo (Cordilleras Béticas)

Se estudian niveles de tempestitas calcáreas en el Dogger y Malm del Subbético Externo. Se describen las secuencias de estructuras internas y se interpreta su génesis en relación con tormentas tropicales o huracanes, lo que concuerda con la paleogeografía y paleolatitud admitida para el Jurásico

Bauxitas kársticas jurásicas en la zona subbética (Zarzadilla de Totana, prov. de Murcia, sureste de España): Interpretación paleogeográfica

Los yacimientos de bauxitas de Zarzadilla de Totana (Murcia) selocalizan en materiales jurásicos del Subbético interno. Las bauxitas se emplazan rellenando cavidades kársticas en el seno de calizas del Lias infradomerense indicando claramente una etapa de emersión de un umbral pelágico que pudo durar parte del Lias superior y del Dogger

Papel de los outsiders en la empresa familiar

The characteristics of the Board of Directors, its running and composition reflect, for most family firms, their structure of power, experience, interests and culture. The presence of outsiders in the board does not necessarily imply a loss of power by the family, as this will impair the transfer of the culture and values of the firm, the vision of the family and its strategic implementation. This work includes a series of recommendations on the most adequate way to integrate outsiders in family firms depending on the combination of ownership distribution and kind of management

Sampling protocol for skeletal structures of North Atlantic albacore tuna (Thunnus alalunga) and ageing interpretation

This paper presents a standardized protocol for sampling skeletal hard parts (dorsal fin ray and otoliths), preparation and age interpretation of albacore first dorsal fin ray. Ageing of albacore is focused in interpretation and reading of annual temporal marks (translucent bands) in first ray of dorsal fin. Preparation of fin ray sections (spines) is presented in detail using two different methods. The spines are usually cut individually using a low speed cutter. Depending of the size of spines, a new procedure has been developed for small spines based on encasing spines in a matrix of plastic resin allowing multiple spines cutting. Interpretation of growth marks on spine sections is explained and examples are presented for a range of size of albacore aged using this method.Ce document présente un protocole standardisé pour l’échantillonnage des pièces dures du squelette (rayon de la nageoire dorsale et otolithes), la préparation et l’interprétation de l’âge du rayon du premier rayon de la nageoire dorsale du germon. La détermination de l’âge du germon se centre sur l’interprétation et la lecture des marques temporelles annuelles (bandes translucides) du premier rayon de la nageoire dorsale. La préparation des sections du rayon de la nageoire (épines) est présentée en détail à l’aide de deux méthodes différentes. Les épines sont généralement sectionnées individuellement en utilisant un couteau basse vitesse. Selon la taille des épines, une nouvelle procédure a été élaborée pour les petites épines, consistant à enfermer les épines dans une matrice en résine plastique qui permet le découpage de plusieurs épines. L’interprétation des marques de croissance sur les sections des épines est expliquée et des exemples sont donnés pour une gamme de tailles de germon dont l’âge a été déterminé à l’aide de cette méthode.En este documento se presenta un protocolo estandarizado para el muestreo de partes duras del esqueleto (otolitos y rayo de la aleta dorsal) y para la preparación e interpretación de la edad del primer rayo de la aleta dorsal del atún blanco. La determinación de la edad del atún blanco se centra en la interpretación y lectura de las marcas temporales anuales (bandas traslucidas) en el primer rayo de la aleta dorsal. Se presenta en detalle la preparación de las secciones del rayo de la aleta (espinas) utilizando dos métodos diferentes. Las espinas suelen cortarse generalmente de forma individual utilizando un cortador de baja velocidad. Dependiendo del tamaño de las espinas, se ha desarrollado un nuevo procedimiento para las espinas pequeñas, que consiste en introducir las espinas en una matriz de resina plástica que permite cortar espinas múltiples. Se explica la interpretación de las marcas de crecimiento en las secciones de espinas y se presentan ejemplos para una gama de tallas de atún blanco cuya edad se determinó utilizando este método

The current population of benchmark brown dwarfs

The number of brown dwarfs (BDs) now identified tops 700. Yet our understanding of these cool objects is still lacking, and models are struggling to accurately reproduce observations. What is needed is a method of calibrating the models, BDs whose properties (e.g. age, mass, distance, metallicity) that can be independently determined can provide such calibration. The ability to calculate properties based on observables is set to be of vital importance if we are to be able to measure the properties of fainter, more distant populations of BDs that near-future surveys will reveal, for which ground based spectroscopic studies will become increasingly difficult. We present here the state of the current population of age benchmark brown dwarfs.Comment: 2 pages, 1 figure, to appear in the conference proceedings "New Technologies for Probing the Diversity of Brown Dwarfs and Exoplanets", Shanghai, 19-24 July, 200

Mealiness assessment in apples using MRI techniques

Small samples of Top Red apples stored 6 months under controlled atmosphere (expected to be non-mealy) and 2°C (expected to be mealy) have been used for MRI imaging. Multi-slice-multi-echo magnetic resonance images (64*64 pixels) have been recorded with a 8 ms echo time. Three out of four apples corresponding to the sample maintained under controlled atmosphere did not developed mealiness while three out of four fruits corresponding to the sample stored at 2°C became mealy after 6 months of storage. The minimum T2 values obtained for the mealy apples show to be significantly lower (F = 13.21) when compared with non-mealy apples pointing that a more desegregated structure and a lower juiciness content leads to lower T2 signal. Also, there is a significant linear correlation (r = −0.76) between the number of pixels with a T2 value below 35 ms within a fruit image and the deformation parameter registered during the Magness–Taylor firmness test. Finally, all T2 maps of mealy apples show a regional variation of contrast which is not shown for non-mealy apples. Significant differences (F = 19.43) between mealy and non-mealy apples are found in the histograms of the T2 maps as mealy apples show a skew histogram combined with a “tail” in their high T2 extreme which is not shown in the histograms of non-mealy apples. These histogram features are also shown for an apple showing internal breakdown indicating that in mealy apples there is a differential water movement that may precede internal breakdown