94 research outputs found

    Scellement de fluvisols dans Madrid. Analyse des images de landsat

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    This paper analyses the evolution of the sealing of fluvisols in the Community of Madrid between 1989 and 2009. To do it images from TM sensor of Landsat have been used. These images allow us to measure the urban area on both dates and show its geographical distribution. These soils have been selected because they are the most fertile and the sealing has resulted in a higher risk of flooding in the nearby towns. Soil loss in two decades reached nearly 2000 hectares. The largest sealed areas are those which are rich or very rich agrologically. Sealing is widespread in the river valleys of the Henares, Jarama and Tagus rivers and not so much in the Manzanares and Guadarrama rivers.En este trabajo se analiza la evolución del sellado en los fluvisoles de la Comunidad de Madrid entre los años 1989 y 2009 utilizando imágenes del sensor TM del satélite Landsat. Estas imágenes permiten medir el área urbanizada en ambas fechas y conocer su distribución espacial. Se han seleccionado estos suelos por ser los más fértiles y porque su sellado implica un incremento en el riesgo de inundación en poblaciones muy próximas. La pérdida de suelo en estas dos décadas alcanza casi las 2.000 hectáreas. Las mayores superficies selladas corresponden a suelos agrológicamente ricos y muy ricos El sellado es extenso en las vegas de los ríos, Henares, Jarama y Tajo, y menor en los ríos Manzanares y Guadarrama.Cet article analyse l’évolution de fluvisoles scellé dans la Communauté de Madrid entre 1989 et 2009 à l’aide d’images du Landsat capteur TM. Ces images nous permettent de mesurer la zone urbaine sur les deux dates et montrer géographiques distribution. Ces sols ont été choisis pour être les plus fertiles et parce que les moyens d’étanchéité une augmentation du risque d’inondation dans les villes à proximité. La perte de sol en deux décennies a atteint près de 2.000 hectares. Les plus grandes zones sous sols scellés d’étanchéité agrologiques riche et très riche est très répandue dans les vallées fluviales, Henares, Jarama et du Tage, et plus bas dans la rivière du Manzanares et Guadarrama

    Sellado de fluvisoles en la Comunidad de Madrid. Análisis a partir de imágenes landsat

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    En este trabajo se analiza la evolución del sellado en los fluvisoles de la Comunidad de Madrid entre los años 1989 y 2009 utilizando imágenes del sensor TM del satélite Landsat. Estas imágenes permiten medir el área urbanizada en ambas fechas y conocer su distribución espacial. Se han seleccionado estos suelos por ser los más fértiles y porque su sellado implica un incremento en el riesgo de inundación en poblaciones muy próximas. La pérdida de suelo en estas dos décadas alcanza casi las 2.000 hectáreas. Las mayores superficies selladas corresponden a suelos agrológicamente ricos y muy ricos El sellado es extenso en las vegas de los ríos, Henares, Jarama y Tajo, y menor en los ríos Manzanares y Guadarrama. [ABSTRACT]This paper analyses the evolution of the sealing of fluvisols in the Community of Madrid between 1989 and 2009. To do it images from TM sensor of Landsat have been used. These images allow us to measure the urban area on both dates and show its geographical distribution. These soils have been selected because they are the most fertile and the sealing has resulted in a higher risk of flooding in the nearby towns. Soil loss in two decades reached nearly 2000 hectares. The largest sealed areas are those which are rich or very rich agrologically. Sealing is widespread in the river valleys of the Henares, Jarama and Tagus rivers and not so much in the Manzanares and Guadarrama rivers

    Guía para realizar una cartografía temática basada en tecnologías de la información geográfica

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    El objetivo del Proyecto es establecer una metodología de trabajo que ayude a la detección y posterior medida del sellado de suelos. La accesibilidad a bases de datos, material cartográfico e imágenes de satélite facilita la actualización de cartografía temática, que pretende en esta ocasión, determinar asentamientos en áreas de riesgo de diversa índole y dar información a los gestores del territorio sobre aspectos medioambientales que deberían tenerse en cuenta al clasificar o reclasificar los suelos de cada municipio. Además de la pérdida de suelo por crecimiento urbano, fácilmente observable mediante imágenes de satélite y fotografías aéreas, se quiere destacar la inadecuación de algunos proyectos urbanísticos recientes, que repiten e incrementan los errores medioambientales del pasado, aún a riesgo de poner en peligro la vida y los bienes de las personas. Este sellado implica también un cambio importante en el paisaje vegetal de un área con importante vegetación de ribera. Para ello se ha seleccionado como caso piloto un área localizada al sudeste de la Comunidad de Madrid, en el límite con la Comunidad de Castilla La Mancha, afectando a las provincias de Cuenca, Guadalajara y Madrid, en las vegas y terrazas del río Tajo y muy influenciada por el “efecto frontera”. Se ha analizado el sellado del suelo y la evolución del paisaje vegetal

    Effect of a New Natural Seasoning on the Formation of Pyrazines in Barbecued Beef Patties

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    The formation of pyrazines in food cooking is required to obtain satisfactory “roasted” flavor.The aim of this work was to evaluate the effect of a new red wine pomace seasoning (RWPS) on the formation of pyrazines in barbecued beef patties. Five pyrazines were successfully identified, 2,5-dimethylpyrazine being the most abundant. Although 2-ethyl-5-methylpyrazine was in lower levels, it presented the highest odor units, due to its low threshold. RWPS enhanced the formation of the five identified pyrazines (2.1 times), without relevant changes in the proportion between them.The highest increase was observed for 2-ethyl-6-methylpyrazine (3 times higher than in control). These results were corroborated by electronic nose analysis, presenting RWPS beef patties higher odor intensities. Mechanisms to explain these effects are also proposed in the present work, and the high content of polyphenols seems to be the major cause of the observed results.The use of RWPS could improve the flavor characteristics of meat products or enable using less intense cooking conditions with no changes in the flavor.Autonomous Government of Castilla y Le´on through the research Projects BU282U1

    Relaciones geográficas de la provincia de León

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    476 p.Estudio del ámbito geográfico de la provincia de León, y algunos territorios extraprovinciales que pertenecían el el siglo XVIII a la Intendecia de León. Este estudio se basa principalmente en el Diccionario geográfico de España de Tomás López

    Wine pomace product ameliorates hypertensive and diabetic aorta vascular remodeling through antioxidant and anti-inflammatory actions

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    Vascular remodeling in hypertension and diabetes is characterized by a low-grade inflammation of the arterial wall and enhanced oxidative stress. Wine pomace products attenuate hyperglycemia and hypertension through reduction of oxidative stress and inflammation by their polyphenol composition. The aim of the study was to assess the influence of the wine pomace product (WP) on morphometric parameters of the arterial wall in spontaneously hypertensive rats (SHRs) and streptozotocin-diabetic rats (STZ). Oxidative stress was also evaluated by determination of radical oxygen species (ROS) and endothelial nitric oxide synthase (eNOS) activation in thoracic aortas. Wine pomace reduces wall aortic thickness, cross sectional area and wall/lumen ratio, and decreases ROS and increases eNOS activation. In summary, the supplementation of hypertensive or diabetic rats with the wine pomace product exhibits a protective role against the endothelial dysfunction and vascular remodeling.Autonomous Government of Castilla y León (Research project BU282U1

    Needs of patients with multi-morbidity and heart failure for the development of a mHealth to improve their self-management: A qualitative analysis

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    Objective: To provide practical information regarding needs, preferences of content and format of an app to assist the self-management in patients with multi-morbidity and heart failure (HF). Methods: The three-phase study was conducted in Spain. Six integrative reviews, a qualitative methodology based on Van Manen's hermeneutic phenomenology through semi-structured interviews and user stories were used. Data collection continued until data saturation was reached. All data were transcribed verbatim and analysed using a framework approach. Thematic analysis technique following the methods of Braun and Clarke was used for emerging themes. Results: Integrative reviews conducted included practical recommendations to include in the content and format of the App and helped create the interview guide. Interviews revealed 15 subthemes that captured the meaning of narratives offering contextual insights into the development of the App. The main effective mechanisms of multicomponent interventions for patients with HF must contain (a) components that increase the patient's understanding of HF, (b) self-care, (c) self-efficacy and participation of the family/informal caregiver, (4) psychosocial well-being and (5) professional support and use of technology. User stories revealed that patients prioritized improvements in direct contact with health services in case of emergency (90%), nutritional information (70%), type of exercises in order to improve their physical condition (75%) and information about food and drug interaction (60%). The importance of motivation messages (60%) was highlighted by transversal way. Conclusions: The three-phase process integrating theoretical basis, evidence from integrative reviews and research findings from target users has been considered a guide for future app development17 página
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