An instrumental puzzle: the modular integration of AOLI

The Adaptive Optics Lucky Imager, AOLI, is an instrument developed to deliver the highest spatial resolution ever obtained in the visible, 20 mas, from ground-based telescopes. In AOLI a new philosophy of instrumental prototyping has been applied, based on the modularization of the subsystems. This modular concept offers maximum flexibility regarding the instrument, telescope or the addition of future developments.Comment: 10 pages, 8 figures, Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99082Z (August 9, 2016

Use of tissue chromogranin A as chronic and acute stress marker in fish

Chromogranin A (CgA) has recently reported as stress marker in superior vertebrates. It is stored in granules of the chromaffin tissue and released to the bloodstream from the adrenal medulla and pituitary after stress situations. The objective of this work was to study the chromogranin A variation for acute and chronic stress in fish, aiming at determining if those proteins could be suitable stress markers. A chronic stress experiment was conducted consisting of two treatments, stressed and control meagres (Argyrosomus regius) for 6 months. The stressed groups were submitted to confinement and netting/chasing stress. The control group tanks were not disturbed along the experiment. A complementary acute stress challenge was performed exposing control fish to air for 3 min. Fish were sampled for blood, tissues and biometry. Plasma lactate and cortisol increased significantly after acute stress although glucose and proteins remained stable, and kidney cortisol and brain adrenaline were significantly higher. Kidney CgA decreased significantly in the acute stressed fish though brain CgA did not change. Final weight and length, growth and condition index were significantly lower in chronically stressed fish, though survival rate was not different between treatments. Plasma markers did not change significantly though kidney cortisol increased in chronically stressed fish. Brain noradrenaline was lower in chronically stressed fish. Both brain and kidney CgA concentrations decreased in stressed (chronic and acute) fish. Concluding, only kidney CgA and cortisol kept the same variation pattern in both stress types. Although cortisol concentrations in plasma and tissues have been widely studied, the tissue CgA concentrations related to stress have not still reported in fish. Initially, the depletion of kidney CgA could be considered as a chronic stress marker though it needs to be supported by future research.M. Herrera’s contract is supported by the Emergia Program (PAIDI 2020), from Junta de Andalucía. N. Salamanca’s pre-doc contract is cofinanced by the European Social Fund (FSE) through the call “Ayudas para contratos predoctorales para la formaci´on de doctores 2017” from the AEI. Funding for open access charge: Universidad de Huelva / CBUA

Design and construction of a 1 m model of the low current superconducting quadrupole for the LHC insertions

About one hundred individually powered low current superconducting quadrupoles will be installed in the LHC insertions. One of the design requirements was to keep the excitation current of the magnet below 6 kA in view of minimizing the costs of the powering circuits. The design of the quadrupole is based on a 8.2 mm NbTi cable, and is designed for a nominal gradient of 200 T/m at 1.9 K. In this paper we present the design of the quadrupole and discuss the construction details of the 1 m single aperture model which has been recently completed

Activities of the European topic centre on soils: the Spanish information system on soils

3 pages, 9 references.-- Forma parte del capítulo Data Availability.-- Trabajo presentado al International Workshop celebrado del 9-11 de octubre 1999, en Alghero, Italia.Within the general activities of the ETC on soils one of the tasks is the development of the Spanish Information System on Soils. This activity is being developed under the agreement between the Spanish Ministry of Environment (MIMAM) and the Spanish High Council for Research (CSIC). This presentation focuses on the development of a database on soil hydraulic properties within the framework of the mentioned agreement MIMAM-CSIC. The database try to compile all existing data of hydraulic properties of the spanish soils. For the development of such a database we have taken into account the existing database of hydraulic properties of european soils (HYPRES) in which the IRNAS (CSIC) of Seville was a contributor. The spanish database on soil hydraulic properties includes detailed references of other soil properties, and the temporal variability of hydraulic properties due to the different soil use and management. This database can be an useful tool in the study of desertification processes, erosion and transport of contaminant.Peer reviewe

Asteroseismology using quadrupolar f-modes revisited: breaking of universal relationships in the slow hadron-quark conversion scenario

In this work, we consider polar perturbations and we calculate the frequency and damping time of the quadrupolar fundamental f -mode of compact objects, constructed using a wide range of model-independent hybrid equations of state that include quark matter. We give special attention to the impact of the hadron-quark conversion speed that, in the slow case, gives rise to a branch of slow stable hybrid stars. Moreover, we study the validity of universal relationships proposed in the literature and find out that none of them remains valid when slow stable hybrid stars are taken into account. This fact could constrain the applicability of asteroseismology methods with fundamental modes designed to estimate the properties of pulsating compact objects. We hope that this result could be tested with the start up of the third-generation gravitational wave observatories, which might shed some light on the f -mode emission from compact objects.Comment: 13 pages, 13 figures. Comments are welcom

Adquisición y procesamiento de imágenes aéreas para sensado remoto

Los sistemas de adquisición de imágenes aéreas digitales de alta resolución basados en cámaras de formato pequeño representan una alternativa de gran versatilidad en la solución de diversos problemas de monitoreo ambiental y sensado remoto, particularmente aquellas obtenidas en base a dispositivos aéreos autónomos UAV. Esto es aí dado que un correcto procesamiento de imágenes de cámaras de formato pequeño (ópticas y/o mulitespectrales) permite la obtención de ortomosaicos que cumplan con estándares de calidad, a una fracción del costo operativo del uso de equipos aerotransportados de costo mucho mayor, y con mayor flexibilidad y resolución que con el uso de imágenes satelitales. El objetivo de este trabajo de investigación es la implementación de un sistema de computo que permita sistematizar la adquisición, procesamiento, rectificación, formación de mosaicos, y georreferenciación de las imágenes adquiridas por medio de cámaras ópticas y multiespectrales transportadas por un UAV. Los resultados obtenidos permiten automatizar el procesamiento casi por completo, requiriendo un mínimo de atención no especializada, y permiten organizar la información e imágenes obtenidas en los vuelos para su posterior uso en procesos de reconocimiento, interpretación e identificación.VII Workshop Computación Gráfica, Imágenes y Visualización (WCGIV)Red de Universidades con Carreras en Informática (RedUNCI

Adquisición y procesamiento de imágenes aéreas para sensado remoto

Los sistemas de adquisición de imágenes aéreas digitales de alta resolución basados en cámaras de formato pequeño representan una alternativa de gran versatilidad en la solución de diversos problemas de monitoreo ambiental y sensado remoto, particularmente aquellas obtenidas en base a dispositivos aéreos autónomos UAV. Esto es aí dado que un correcto procesamiento de imágenes de cámaras de formato pequeño (ópticas y/o mulitespectrales) permite la obtención de ortomosaicos que cumplan con estándares de calidad, a una fracción del costo operativo del uso de equipos aerotransportados de costo mucho mayor, y con mayor flexibilidad y resolución que con el uso de imágenes satelitales. El objetivo de este trabajo de investigación es la implementación de un sistema de computo que permita sistematizar la adquisición, procesamiento, rectificación, formación de mosaicos, y georreferenciación de las imágenes adquiridas por medio de cámaras ópticas y multiespectrales transportadas por un UAV. Los resultados obtenidos permiten automatizar el procesamiento casi por completo, requiriendo un mínimo de atención no especializada, y permiten organizar la información e imágenes obtenidas en los vuelos para su posterior uso en procesos de reconocimiento, interpretación e identificación.VII Workshop Computación Gráfica, Imágenes y Visualización (WCGIV)Red de Universidades con Carreras en Informática (RedUNCI