34 research outputs found

    Catalizador zeolítico para alquilación de compuestos aromáticos con olefinas, alcoholes o compuestos aromáticos polialquilados

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    Referencia OEPM: P200001101.-- Fecha de solicitud: 19/04/2000.-- Titulares: Universidad Politécnica de Valencia (UPV), Consejo Superior de Investigaciones Científicas (CSIC).La presente patente de invención se refiere a un catalizador zeolítico basado en ITQ-7 y/o todos sus posibles intercrecimientos y su aplicación para la alquilación de aromáticos con olefinas, alcoholes o compuestos aromáticos polialquilados. Se contempla que el catalizador y la aplicación a que se refiere la presente invención es particularmente valioso para la producción de cumeno.Peer reviewe

    De campañas de medidas a productos de salinidad: un tributo a las contribuciones de Jordi Font a la mision SMOS

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    Camps, Adriano ... et al.-- Special volume: Planet Ocean. Scientia Marina 80(Suppl.1) 2016.-- 14 pages, 20 figures[EN] This article summarizes some of the activities in which Jordi Font, research professor and head of the Department of Physical and Technological Oceanography, Institut de Ciències del Mar (CSIC, Spanish National Research Council) in Barcelona, has been involved as co-Principal Investigator for Ocean Salinity of the European Space Agency Soil Moisture and Ocean Salinity (SMOS) Earth Explorer Mission from the perspective of the Remote Sensing Lab at the Universitat Politècnica de Catalunya. We have probably left out some of his many contributions to salinity remote sensing, but we hope that this review will give an idea of the importance of his work. We focus on the following issues: 1) the new accurate measurements of the sea water dielectric constant, 2) the WISE and EuroSTARRS field experiments that helped to define the geophysical model function relating brightness temperature to sea state, 3) the FROG 2003 field experiment that helped to understand the emission of sea foam, 4) GNSS-R techniques for improving sea surface salinity retrieval, 5) instrument characterization campaigns, and 6) the operational implementation of the Processing Centre of Levels 3 and 4 at the SMOS Barcelona Expert Centre[ES] Este artículo resume algunas de las actividades en las que Jordi Font, profesor de investigación y jefe del Departamento de Física y Tecnología Oceanográfica, del Institut de Ciències del Mar (CSIC) en Barcelona, ha estado desarrollando como co-Investigador Principal de la parte de la misión SMOS de la ESA, una misión Earth Explorer, desde la perspectiva del Remote Sensing Lab, de la Universitat Politècnica de Catalunya. Seguramente, estamos olvidando algunas de sus muchas contribuciones a la teledetección de la salinidad, pero esperamos que esta revisión dé una idea de la importancia de su trabajo. Este artículo se focaliza en los siguientes puntos: 1) las medidas de alta calidad de la constante dieléctrica del agua marina, 2) las campañas de medidas WISE y EuroSTARRS que ayudaron a la definición del modelo geofísico relacionando la temperatura de brillo con el estado del mar, 3) la campaña de medidas FROG 2003 que ayudó a entender la emisión de la espuma marina 4) presentación de las técnicas de GNSS-R para la mejora de la recuperación de la salinidad superficial 5) campañas para la caracterización del instrumento y 6) la implantación del centro de procesado operacional de niveles 3 y 4 en el SMOS Barcelona Expert CentreThis work has been performed under research grants TEC2005-06863-C02-01/TCM, ESP2005-06823-C05 and ESP2007-65667-C04, AYA2008-05906-C02-01/ESP, AYA2010-22062-C05 and ESP2015-70014-C2-1-R, and EURYI 2004 awardPeer Reviewe

    De campañas de medidas a productos de salinidad: un tributo a las contribuciones de Jordi Font a la mision SMOS

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    This article summarizes some of the activities in which Jordi Font, research professor and head of the Department of Physical and Technological Oceanography, Institut de Ciències del Mar (CSIC, Spanish National Research Council) in Barcelona, has been involved as co-Principal Investigator for Ocean Salinity of the European Space Agency Soil Moisture and Ocean Salinity (SMOS) Earth Explorer Mission from the perspective of the Remote Sensing Lab at the Universitat Politècnica de Catalunya. We have probably left out some of his many contributions to salinity remote sensing, but we hope that this review will give an idea of the importance of his work. We focus on the following issues: 1) the new accurate measurements of the sea water dielectric constant, 2) the WISE and EuroSTARRS field experiments that helped to define the geophysical model function relating brightness temperature to sea state, 3) the FROG 2003 field experiment that helped to understand the emission of sea foam, 4) GNSS-R techniques for improving sea surface salinity retrieval, 5) instrument characterization campaigns, and 6) the operational implementation of the Processing Centre of Levels 3 and 4 at the SMOS Barcelona Expert Centre.Este artículo resume algunas de las actividades en las que Jordi Font, profesor de investigación y jefe del Departamento de Física y Tecnología Oceanográfica, del Institut de Ciències del Mar (CSIC) en Barcelona, ha estado desarrollando como co-Investigador Principal de la parte de la misión SMOS de la ESA, una misión Earth Explorer, desde la perspectiva del Remote Sensing Lab, de la Universitat Politècnica de Catalunya. Seguramente, estamos olvidando algunas de sus muchas contribuciones a la teledetección de la salinidad, pero esperamos que esta revisión dé una idea de la importancia de su trabajo. Este artículo se focaliza en los siguientes puntos: 1) las medidas de alta calidad de la constante dieléctrica del agua marina, 2) las campañas de medidas WISE y EuroSTARRS que ayudaron a la definición del modelo geofísico relacionando la temperatura de brillo con el estado del mar, 3) la campaña de medidas FROG 2003 que ayudó a entender la emisión de la espuma marina 4) presentación de las técnicas de GNSS-R para la mejora de la recuperación de la salinidad superficial 5) campañas para la caracterización del instrumento y 6) la implantación del centro de procesado operacional de niveles 3 y 4 en el SMOS Barcelona Expert Centre

    Ice thickness effects on Aquarius brightness temperatures over Antarctica

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    13 pages, 7 figures, 1 table, the Aquarius L2 V3.0 data are available at oceandata.sci.gsfc.nasa.gov/Aquarius/V3/V3.0/L2, the Antarctic data sets from the Bedpmap2 project are available at https://secure.antarctica.ac.uk/data/bedmap2/, the subglacial lakes inventory is available at https://doi.org/10.1017/S095410201200048XThe Dome-C region, in the East Antarctic Plateau, is regarded as an ideal natural laboratory for calibration/validation of space-borne microwave radiometers. At L-band, the thermal stability of this region has been confirmed by several experimental campaigns. However, its use as an independent external calibration target has recently been questioned due to some spatial inhomogeneities and seasonal effects revealed in the brightness temperatures (TB) acquired in this area. This paper shows the observed relationship, from exploratory research, between the Antarctic ice thickness spatial variations and the measured Aquarius TB changes. A 3-months no-daylight period during the Austral winter has been analyzed. Four transects have been defined over East Antarctica covering areas with different ice thickness variations and ranges. The theoretical L-band penetration depth has been estimated to understand the possible contributions to the measured signal. A good agreement has been observed between Aquarius TB and ice thickness variations over the whole Antarctica, with correlations of ∼0.6-0.7. The two variables show a linear trend with slopes of ∼8.3-9.5 K/km. No correlation has been observed with the subglacial bedrock. The maximum L-band penetration depth has been estimated to be ∼1-1.5 km. Results are therefore consistent: the spatial variations found on Aquarius TB are not related to the emissivity of the bedrock, which lies deeper. This study provides evidence that new L-band satellite observations could contribute to further our understanding of Antarctic geophysical processes. Key Points: Relationship between Antarctic ice thickness and observed Aquarius TB. Maximum L-band penetration depth over Antarctic ice.Possible influence of subglacial lakes on Aquarius TB © 2015. American Geophysical Union. All Rights ReservedThe work presented in this paper was supported by the Spanish National R1D Program on Space of the Ministry of Economy and Competitiveness, through a Formación de Personal Investigador (FPI) grant with reference BES-2011-043322 and the project MIDAS 7: AYA2012-39356-C05-01Peer Reviewe

    Catalalyst for alkylating aromatic compounds with olefins, alcohols or polyalkylated aromatic compounds.

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    Fecha de solicitud: 12.07.2001.-Titulares: Consejo Superior de Investigaciones Científicas (CSIC).- Universidad Politécnica de Valencia.A zeolite catalyst is described corresponding to an acid form of ITQ-7 zeolite and/or all its possible intergrowths, its method of preparation and its application for the alkylation of aromatics with olefins, alcohols or polyalkylated aromatic compounds. It is considered that the catalyst and the application to which this present invention refers are particularly valuable for the production of cumene.Peer reviewe

    Influence of ice thickness on SMOS and aquarius brightness temperatures over Antarctica

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    2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2015), Remote Sensing: Understanding the Earth for a Safer World, 26-31 July 2015, Milan, Italy.-- 4 pages, 6 figures, 1 table.-- © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The Dome-C region, in the East Antarctic Plateau, has been used for calibration/validation of satellite microwave radiometers since the 1970's. However, its use as an independent external target has been recently questioned due to some spatial inhomogeneities found in L-band airborne and satellite observations. This work evidences the influence of the Antarctic ice thickness spatial variations on the measured SMOS and Aquarius brightness temperatures (TB). The possible effects of subglacial water and bedrock on the acquired radiometric signals have also been analyzed. A 3-months no-daylight period during the Austral winter has been selected. Four transects over East Antarctica have been defined to study the spatial variations. A good agreement between SMOS and Aquarius TB changes and ice thickness variations over the whole Antarctica has been observed, obtaining linear correlations of 0.6-0.7 and slopes of 8.6-9.5 K/km. The subglacial lakes may affect the vertical physical temperature profile and/or the dielectric properties of the ice layers above. As expected, the subglacial bedrock is not contributing to the measured TB, since the maximum estimated L-band penetration depth is ~1-1.5 kmPeer Reviewe

    Inter-Comparison of SMOS and Aquarius Brightness Temperatures at L-band over Selected Targets

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    IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Remote Sensing for a Dynamic Earth, 21-26 July 2013, Melbourne, AustraliaPeer Reviewe

    Inter-Comparison of SMOS and Aquarius Brightness Temperatures at L-Band over Selected Targets

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    SMOS & Aquarius Science Workshop, 15-17 April 2013, Brest, FranceThe European Space Agency (ESA) launched the Soil Moisture and Ocean Salinity (SMOS) satellite on November 2, 2009, to globally monitoring surface soil moisture over the landmasses and salinity over the oceans. Its single payload is the first two-dimensional Microwave Imaging Radiometer with Aperture Synthesis (MIRAS), an instrument that provides multi-angular L-band measurements in the field of view (from 0† to 65°) and has full-polarimetric capabilities (measures H, V and HV polarizations). The next satellite devoted to global sea surface salinity monitoring is the Aquarius/SAC-D, which was launched on June 9, 2011, by a collaboration between the US National Aeronautics and Space Administration (NASA) and the Argentinian Comisión Nacional de Actividades Espaciales (CONAE). It includes three beam push-broom L-band real aperture radiometers and real aperture scatterometers, both full-polarimetric and feeded by the same reflector at three incidence angles (28.7°, 37.8° and 45.6° for the inner, the middle and the outer beams)Peer Reviewe
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