27 research outputs found

    La relación de los museos con el paisaje y su repercusión didáctica. Estado de la cuestión y ejemplos en Extremadura y Aragón

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    La relación entre arte y naturaleza ha marcado la Historia del Arte de todos los tiempos. El patrimonio y los paisajes culturales que se han desarrollado gracias a esta simbiosis son múltiples y diversos en todo el mundo. A ello hay que añadir en la actualidad que algunos museos han optado por implantarse en zonas no urbanizadas, rompiendo estrategias tradicionales e instalando algunas obras en entornos naturales que facilitan el deleite artístico y el aprendizaje en un sentido amplio, siendo muy útiles para visitas o itinerarios interdisciplinares. Nuestro estudio recoge la literatura científica que relaciona las didácticas de las ciencias sociales y naturales, viendo su relación con los ODS 2030 (Objetivos de Desarrollo Sostenible). Asimismo, establece un listado tipológico de museos que combinan arte y naturaleza y señala algunos ejemplos nacionales e internacionales. Por último, analiza museos aragoneses y extremeños, centrándose en los más significativos de esta temática: el Centro de Arte y Naturaleza de Huesca (CDAN) y el Museo Vostell en Malpartida de Cáceres (MVM). The relationship between art and nature has marked the Art History of all time. The heritage and cultural landscapes that have developed thanks to this symbiosis are multiple and diverse throughout the world. To this must be added at present that some museums have chosen to settle in undeveloped areas, breaking traditional strategies and installing some works in natural environments that facilitate artistic delight and learning in a broad sense, being very useful for visits or interdisciplinary itineraries. Our study collects the scientific literature that relates the didactics of the social and natural sciences, seeing its relationship with the SDGs 2030 (Sustainable Development Goals). Likewise, it establishes a typological list of museums that combine art and nature and indicates some national and international examples. Lastly, it analyzes Aragonese and Extremaduran museums, focusing on the most significant of this theme: the Huesca Art and Nature Center (CDAN) and the Vostell Museum in Malpartida de Cáceres (MVM)

    Corneo‐limbo‐conjunctival transposition to treat deep and perforating corneal ulcers in dogs: A review of 418 eyes and corneal clarity scoring in 111 eyes

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    Purpose To report surgical and corneal clarity scores (CCSs) of corneo‐limbo‐conjunctival transpositions (CLCTs) in a large number of canine cases. Methods Retrospective review of records that underwent CLCT to repair deep ulcers or perforations between 2002 and 2018. Signalment, concurrent eye disease, additional procedures, pathogenesis, medication, graft orientation, follow‐up, and CCSs were recorded. Results 418 eyes of 399 dogs were included. Brachycephalics were most commonly affected, comprising 325/418 (77.75%) of the eyes. The most commonly affected breeds were Pugs, Shih Tzus, Cavalier King Charles Spaniels, and French Bulldogs, with 116/418 (27.75%), 64/418 (15.31%), 34/418 (8.13%), and 34/418 (8.13%) ulcerated eyes, respectively. Mean age at surgery was 5.5 years (range 59 days‐17.7 years), and median follow‐up time was 100 days (range 3 days‐7.64 years). The most common etiopathogenesis was spontaneous ulceration in 205/418 eyes (49.04%) of which 191 (93.17%) occurred in brachycephalics. Primary keratoconjunctivitis sicca affected 122/418 eyes (29.19%) and injury 39/418 eyes (9.33%). Mean ulcer width was 3.5 mm (0.5‐10 mm). Success rate was 97.13% (406/418 eyes). Failure end points recorded included no menace response, secondary glaucoma, and endophthalmitis. Pre‐existing perforation was found in 101/418 (24.16%) of the eyes and significantly increased failure rate (P < .001). The median CCS was G3 (G0‐G4), which was lower for Pugs (G2). Graft orientation affected CCS, but did not reach statistical significance. Conclusion The high success rate and CCS for CLCT in dogs make it a good technique to treat deep ulcers but a less desirable outcome is anticipated when treating perforations and Pugs

    Neurogenesis Drives Stimulus Decorrelation in a Model of the Olfactory Bulb

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    The reshaping and decorrelation of similar activity patterns by neuronal networks can enhance their discriminability, storage, and retrieval. How can such networks learn to decorrelate new complex patterns, as they arise in the olfactory system? Using a computational network model for the dominant neural populations of the olfactory bulb we show that fundamental aspects of the adult neurogenesis observed in the olfactory bulb -- the persistent addition of new inhibitory granule cells to the network, their activity-dependent survival, and the reciprocal character of their synapses with the principal mitral cells -- are sufficient to restructure the network and to alter its encoding of odor stimuli adaptively so as to reduce the correlations between the bulbar representations of similar stimuli. The decorrelation is quite robust with respect to various types of perturbations of the reciprocity. The model parsimoniously captures the experimentally observed role of neurogenesis in perceptual learning and the enhanced response of young granule cells to novel stimuli. Moreover, it makes specific predictions for the type of odor enrichment that should be effective in enhancing the ability of animals to discriminate similar odor mixtures

    Malignant Melanoma of Oral Cavity, A Case-Based Review of the Literature

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    Introduction: Primary Mucosal Malignant Melanoma is an aggressive cancer, especially when there is a late diagnosis. The mortality is low in early stages but in advanced stages is less than a 30% on a 5-years following. Only a 0.5% to 3% of Melanomas are Mucosal Melanomas. Among them, the Mucosal Malignant Melanoma of oral cavity is a rare tumor, with an extremely aggressive behavior at diagnosis.Case Report: 51 years old male, consult on April 2015, at Centro de Salud Familiar Flor Pedreros Parra, Trehuaco city, Chile, for dark blue round tumor, 1.5 cm wide, placed near the tooth 1.3, compromising the gum. The patient refers previous consultations with a smaller and flat lesion. He reveals important everyday sun exposure, without proper UV protection. One month later, the tumor grows and becomes indurate, consequently the patient was transferred to Herminda Martin Hospital of Chillán City, where incisional biopsy concludes “Mucosal Malignant Melanoma with infiltration of surroundings tissuesâ€. Chemotherapy is realized with poor results. Last control with Odontology in August 2015, the tumor evolves to a black nodule, 4 cm wide, compromising the upper maxilla, right eye and mouth opening, concomitant to multiple black satellite papula. Computed Tomography showed skull base infiltration, cervical lymphatics and other zones of head and neck. The patient was transferred to palliative care and died before a year from diagnosis.Discussion: The primary Mucosal Malignant Melanoma of oral cavity it’s a very strange condition. It has variable presentations, sometimes like a little maculae with different colors or like a highly pigmented tumor with ulcers or hemorrhage, with a high growing rate. It has an important metastatic potential and a poor prognostic. This is the reason why early clinical suspect and diagnosis is extremely valuable

    Assessment of Future Land Use/Land Cover Scenarios on the Hydrology of a Coastal Basin in South-Central Chile

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    Land use and land cover (LULC) change is one of the clearest representations of the global environmental change phenomenon at various spatial and temporal scales. Chile is worldwide recognized to have areas dedicated to non-native forest plantations that specifically in coastal range show high environmental and economic deterioration, questioning the sustainability of the forestry industry. Currently, there are no studies in Chile that reveal the real effects of the LULC change on the water balance at basin or sub-basin scales associated with future scenarios, which might contribute to territorial decision-making and reveal the real magnitude of the effects of these dynamics. In this study, in order to study LULC dynamics in a coastal basin in South-Central Chile, we assessed and analyzed the effects of future LULC change scenarios on the hydrological processes by generating future synthetic land cover maps from Landsat (Landsat 5 TM and Landsat 8 OLI) image datasets. The hydrological model Soil Water Assessment Tool (SWAT) was calibrated and validated, using hydroclimatic time series, to simulate discharges and other hydrological components over those future LULC scenarios. The LULC future scenarios were projected using combined Markov chain analysis (CA&ndash;Markov) and cellular automata algorithms for the near (2025), middle (2035) and far (2045) future. The results revealed that the effects on the different components of the water balance of the basin are not as significant except in the soil water transfer in percolation (increase 72.4%) and groundwater flow (increase 72.5%). This trend was especially observed in sub-basins with non-native forest plantations that dominated land cover in the year 2035, in which an increase of 43.6% in percolation and groundwater flows resulted in increased aquifer recharge and water storage, mainly offset by a decrease of 27% in the evapotranspiration. This work demonstrates the importance of evaluating the impacts of the dynamics of LULC on the hydrological response of a coastal basin, and also on how the land use governance and policy are closely linked to that of water resources
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