45 research outputs found

    MODELING AND SIMULATION OF POSSIBLE POSITIONS OF THE WATCHTOWER NETWORK OF THE MOTA FORTRESS IN ALCALA LA REAL, USING VISUAL ANALYSIS TECHNIQUES

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    [EN] The cultural heritage plays a very important role in the Smart management of an area, and geospatial technologies are a perfect tool for the heritage knowledge, management and analysis. Photogrammetry, UAV systems and geographic information systems, can help in cataloguing the cultural heritage of a city. The main turistic value for Alcalá la Real, is the Monumental Group of the Fortress of La Mota and their related monuments. As the principal objetive of the Project, an analysis and the calculation of the optimal location of the watchtower network is made. To achieve this, on the one hand photogrammetry technics are used to get the geometric information of the studied area. On the other hand, photogrammetry through UAV systems is used to obtain the 3D model of one of the watchtowers, which is better preserved than others. Finally, programming tools are applied over GIS for the analysis and calculation of the optimal location of this watchtower network.[ES] El patrimonio cultural juega un papel importante en la gestión inteligente de un territorio, y las técnicas geoespaciales son una perfecta herramienta para el conocimiento, gestión y análisis de dicho patrimonio. Elementos como la fotogrametría, los sistemas UAV y los sistemas de información geográfica, pueden contribuir en gran medida a la catalogación y puesta en valor del patrimonio de una ciudad. Alcalá la Real tiene al Conjunto Monumental de la Fortaleza de la Mota y elementos relacionados como motor principal del atractivo turístico de la ciudad. Motivo por el que se plantea utilizar diversas técnicas geoespaciales para el estudio y análisis de parte de ese patrimonio. Concretamente, como objetivo principal del trabajo, se plantea el análisis y la determinación de la ubicación óptima de la red de atalayas. Para ello se utilizan técnicas fotogramétricas para obtener la información geométrica de la zona de estudio a partir de imágenes de un vuelo fotogramétrico. Por otro lado, para el conocimiento de las características de las atalayas, se realiza el modelado de una de las mejor conservadas, mediante fotogrametría con sistemas UAV. Finalmente, se utilizan herramientas de programación sobre sistemas de información geográfica para el análisis y la determinación de la ubicación óptima de la red de atalayas.Rosales Ávila, FJ.; Pérez-García, JL.; Colomo, C.; Gómez-López, JM.; Ureña, MA. (2016). MODELIZACIÓN Y SIMULACION DE LAS POSIBLES POSICIONES DE LAS ATALAYAS DE LA FORTALEZA DE LA MOTA EN ALCALA LA REAL, MEDIANTE TECNICAS DE ANALISIS VISUAL. En 8th International congress on archaeology, computer graphics, cultural heritage and innovation. Editorial Universitat Politècnica de València. 184-190. https://doi.org/10.4995/arqueologica8.2015.3562OCS18419

    A new cosmological tracker solution for Quintessence

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    In this paper we propose a quintessence model with the potential V(Φ)=Vo[sinh(ακoΔΦ)]βV(\Phi )=V_{o}[ \sinh {(\alpha \sqrt{\kappa_{o}}\Delta \Phi})] ^{\beta}, which asymptotic behavior corresponds to an inverse power-law potential at early times and to an exponential one at late times. We demonstrate that this is a tracker solution and that it could have driven the Universe into its current inflationary stage. The exact solutions and the description for a complete evolution of the Universe are also given. We compare such model with the current cosmological observations.Comment: 13 pages REVTeX, 5 eps color figure

    Benthic-demersal communities of circalittoral soft bottoms of Málaga Bay

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    The Bay of Málaga is located in a biodiversity hotspot with high productivity that favors a wide variety of commercial and non-commercial species as well as fishing fleet types. Benthic and demersal fauna from circalittoral soft bottoms of this bay have been studied using a benthic dredge (8 sampling stations in December 2013) and an otter trawl (8 sampling stations on a seasonal basis). Sediment and water properties have also been studied in order to analyze their relationships with the benthic and demersal communities. A total of 287 spp. have been found, being molluscs and fishes the most diverse and abundant ones in the samples. A low number of species (44 spp.) were only collected with both sampling gears, indicating the importance on combining sampling methods in biodiversity studies. Benthic dredge samples displayed some differences in relation to depth and sediment types, whereas differences of otter trawl samples seemed to be more influenced by seasonal changes. SIMPER analyses indicated that temporal variation was due to seasonal changes of abundance of some species of commercial interest. This seasonal variability should be taken into account in further management of this area as a potential new Fisheries Reserve.Versión del edito

    Unbiased constraints on ultralight axion mass from dwarf spheroidal galaxies

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    It has been suggested that the internal dynamics of dwarf spheroidal galaxies (dSphs) can be used to test whether or not ultralight axions with ma1022eVm_a\sim 10^{-22}\text{eV} are a preferred dark matter candidate. However, comparisons to theoretical predictions tend to be inconclusive for the simple reason that while most cosmological models consider only dark matter, one observes only baryons. Here we use realistic kinematic mock data catalogs of Milky Way dSph's to show that the "mass-anisotropy degeneracy" in the Jeans equations leads to biased bounds on the axion mass in galaxies with unknown dark matter halo profiles. In galaxies with multiple chemodynamical components this bias can be partly removed by modelling the mass enclosed within each subpopulation. However, analysis of the mock data reveals that the least-biased constraints on the axion mass result from fitting the luminosity-averaged velocity dispersion of the individual chemodynamical components directly. Applying our analysis to two dSph's with reported stellar subcomponents, Fornax and Sculptor, and assuming that the halo profile has not been acted on by baryons, yields core radii rc>1.5r_{c}>1.5 kpc and rc>1.2r_c> 1.2 kpc respectively, and ma<0.4×1022eVm_a<0.4\times 10^{-22}\text{eV} at 97.5\% confidence. These bounds are in tension with the number of observed satellites derived from simple (but conservative) estimates of the subhalo mass function in Milky Way-like galaxies. We discuss how baryonic feedback might affect our results, and the impact of such a small axion mass on the growth of structures in the Universe.Comment: 17 pages, 12 figures. Version to match MNRAS. Analysis extended to anisotropic mocks. Main conclusions unchange

    Gene Therapy Corrects Mitochondrial Dysfunction in Hematopoietic Progenitor Cells and Fibroblasts from Coq9R239X Mice

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    This study has been submitted to the patent's offices at the "University of Granada" and "Fundación Progreso y Salud". Please note that the results of this manuscript have been submitted to patent protection (application number P201630630; title: “Uses of Coenzyme Q biosynthetic proteins”; date:05/16/2016).Recent clinical trials have shown that in vivo and ex vivo gene therapy strategies can be an option for the treatment of several neurological disorders. Both strategies require efficient and safe vectors to 1) deliver the therapeutic gene directly into the CNS or 2) to genetically modify stem cells that will be used as Trojan horses for the systemic delivery of the therapeutic protein. A group of target diseases for these therapeutic strategies are mitochondrial encephalopathies due to mutations in nuclear DNA genes. In this study, we have developed a lentiviral vector (CCoq9WP) able to overexpress Coq9 mRNA and COQ9 protein in mouse embryonic fibroblasts (MEFs) and hematopoietic progenitor cells (HPCs) from Coq9R239X mice, an animal model of mitochondrial encephalopathy due to primary Coenzyme Q (CoQ) deficiency. Ectopic over-expression of Coq9 in both cell types restored the CoQ biosynthetic pathway and mitochondrial function, improving the fitness of the transduced cells. These results show the potential of the CCoq9WP lentiviral vector as a tool for gene therapy to treat mitochondrial encephalopathies.This work was supported by grants from Ministerio de Economía y Competitividad (Spain) and the European Regional Development Fund (ERDF) from the European Union, to LCL through the research grants SAF2013-47761-R and SAF2015-65786-R; by Fondo de Investigaciones Sanitarias ISCIII (Spain) and the European Regional Development Fund (ERDF) from the European Union through the research grants PI12/01097 and ISCIII Red de Terapia Celular TerCel RD12/0019/0006 to FM; by the Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía-FEDER/Fondo de Cohesion Europeo (FSE) de Andalucía through the research grants P10-CTS-6133 to LCL; P09-CTS-04532, PI-57069, PI-0001/2009 and PAIDI-Bio-326 to F.M.; PI-0160/2012 to KB and PI-0407/2012 to MC; by the NIH through the research P01HD080642 to LCL and by the foundation “todos somos raros, todos somos únicos” to LCL. LCL is supported by the ‘Ramón y Cajal’ National Programme, Ministerio de Economía y Competitividad, Spain (RYC-2011-07643)

    HAWC and Fermi-LAT Detection of Extended Emission from the Unidentified Source 2HWC J2006+341

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    The discovery of the TeV point source 2HWC J2006+341 was reported in the second HAWC gamma-ray catalog. We present a follow-up study of this source here. The TeV emission is best described by an extended source with a soft spectrum. At GeV energies, an extended source is significantly detected in Fermi-LAT data. The matching locations, sizes and spectra suggest that both gamma-ray detections correspond to the same source. Different scenarios for the origin of the emission are considered and we rule out an association to the pulsar PSR J2004+3429 due to extreme energetics required, if located at a distance of 10.8 kpc.Comment: 12 pages, 2 figures. To appear in ApJ

    Hypoxia compromises the mitochondrial metabolism of Alzheimer’s disease microglia via HIF1

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    Genetic Alzheimer’s disease (AD) risk factors associate with reduced defensive amyloid β plaque-associated microglia (AβAM), but the contribution of modifiable AD risk factors to microglial dysfunction is unknown. In AD mouse models, we observe concomitant activation of the hypoxia-inducible factor 1 (HIF1) pathway and transcription of mitochondrial-related genes in AβAM, and elongation of mitochondria, a cellular response to maintain aerobic respiration under low nutrient and oxygen conditions. Overactivation of HIF1 induces microglial quiescence in cellulo, with lower mitochondrial respiration and proliferation. In vivo, overstabilization of HIF1, either genetically or by exposure to systemic hypoxia, reduces AβAM clustering and proliferation and increases Aβ neuropathology. In the human AD hippocampus, upregulation of HIF1α and HIF1 target genes correlates with reduced Aβ plaque microglial coverage and an increase of Aβ plaque-associated neuropathology. Thus, hypoxia (a modifiable AD risk factor) hijacks microglial mitochondrial metabolism and converges with genetic susceptibility to cause AD microglial dysfunction.R.M.-D. was the recipient of a Sara Borrell fellowship from Instituto de Salud Carlos III (ISCIII) (CD09/0007). N.L.-U., C.O.-d.S.L., C.R.-M. and M.I.A.-V. were the recipients of FPU fellowships from Spanish Ministry of Education, Culture and Sport (FPU14/02115, AP2010‐1598, FPU16/02050 and FPU15/02898, respectively). A.H.-G. was the recipient of an FPI fellowship from the Spanish Ministry of Education, Culture and Sport (BES-2010-033886). This work was supported by grants from the Spanish MINEICO, ISCIII and FEDER (European Union) (SAF2012‐33816, SAF2015‐64111‐R, SAF2017-90794-REDT and PIE13/0004 to A.P.); by the Regional Government of Andalusia co-funded by CEC and FEDER funds (European Union) (‘Proyectos de Excelencia’; P12‐CTS‐2138 and P12‐CTS‐2232 to A.P.); by the ‘Ayuda de Biomedicina 2018’, Fundación Domingo Martínez (to A.P.) ; by the ISCIII of Spain, co-financed by FEDER funds (European Union) through grants PI18/01556 (to J.V.) and PI18/01557 (to A. Gutierrez); by Junta de Andalucía, co-financed by FEDER funds (grants UMA18-FEDERJA-211 (to A. Gutierrez) and US‐1262734 (to J.V.)); and by Spanish MINEICO (BFU2016-76872-R and BES-2011-047721 to E.B.).Peer reviewe

    A Contribution of the HAWC Observatory to the TeV era in the High Energy Gamma-Ray Astrophysics: The case of the TeV-Halos

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    We present a short overview of the TeV-Halos objects as a discovery and a relevant contribution of the High Altitude Water \v{C}erenkov (HAWC) observatory to TeV astrophysics. We discuss history, discovery, knowledge, and the next step through a new and more detailed analysis than the original study in 2017. TeV-Halos will contribute to resolving the problem of the local positron excess observed on the Earth. To clarify the latter, understanding the diffusion process is mandatory.Comment: Work presented in the 21st International Symposium on Very High Energy Cosmic Ray Interactions(ISVHECRI 2022) as part of the Ph. D. Thesis of Ramiro Torres-Escobedo (SJTU, Shanghai, China). Accepted for publication in SciPost Physics Proceedings (ISSN 2666-4003). 11 pages, 3 Figures. Short overview of HAWC and TeV Halos objects until 202

    Combined dark matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS

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    Cosmological and astrophysical observations suggest that 85% of the total matter of the Universe is made of Dark Matter (DM). However, its nature remains one of the most challenging and fundamental open questions of particle physics. Assuming particle DM, this exotic form of matter cannot consist of Standard Model (SM) particles. Many models have been developed to attempt unraveling the nature of DM such as Weakly Interacting Massive Particles (WIMPs), the most favored particle candidates. WIMP annihilations and decay could produce SM particles which in turn hadronize and decay to give SM secondaries such as high energy \u1d6fe rays. In the framework of indirect DM search, observations of promising targets are used to search for signatures of DM annihilation. Among these, the dwarf spheroidal galaxies (dSphs) are commonly favored owing to their expected high DM content and negligible astrophysical background. In this work, we present the very first combination of 20 dSph observations, performed by the Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS collaborations in order to maximize the sensitivity of DM searches and improve the current results. We use a joint maximum likelihood approach combining each experiment’s individual analysis to derive more constraining upper limits on the WIMP DM self-annihilation cross-section as a function of DM particle mass. We present new DM constraints over the widest mass range ever reported, extending from 5 GeV to 100 TeV thanks to the combination of these five different \u1d6fe-ray instruments
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