8 research outputs found

    Trinity Tripod, 1930-05-23

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    European Freshwater Ecosystem Assessment: Cross-walk between the Water Framework Directive and Habitats Directive types, status and pressures

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    The EU policies on the freshwater environment and nature and biodiversity are closely linked. The aims of the Water Framework Directive (WFD) and the Habitat Directive (HD) are to achieve good status for water bodies (WFD) and for habitats and species (HD) respectively. The types of rivers and lakes and their ecological status and pressures under the WFD are not directly comparable to the conservation status and threats for freshwater habitats and species under the HD (EC 2011a). The objective of this study has been to explore the possibilities of linking WFD and HD information on types of water bodies and habitats, and their status, pressures and measures, using WISE WFD information on types, ecological status, pressures and measures (EEA 2012, ETC-ICM 2012) and HD information on habitat types, conservation status and threats (EC 2007). The results may be used as input to the EEA Freshwater Ecosystem Assessment in 2015, and also for future European assessments of specific objectives, status and trends for various types of rivers and lakes after the reporting of the WFD 2nd RBMPs and the next HD article 17 reporting. The outcome may also be used as a basis for discussions of the potential and limitations for WFD and HD synergies in terms of monitoring programmes, assessment systems and measures to improve status. The general methodology used in this report is to analyse data and information reported by Member States on WFD types, ecological status and pressures in river and lake water bodies and on Habitats Directive freshwater habitats and their conservation status and threats. The major data sources used are the WISE-WFD database and the HD Article 17 databaseJRC.H.1-Water Resource

    Refining and Casting of Steel

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    Steel has become the most requested material all over the world during the rapid technological evolution of recent centuries. As our civilization grows and its technological development becomes connected with more demanding processes, it is more and more challenging to fit the required physical and mechanical properties for steel in its huge portfolio of grades for each steel producer. It is necessary to improve the refining and casting processes continuously to meet customer requirements and to lower the production costs to remain competitive. New challenges related to both the precise design of steel properties and reduction in production costs are combined with paying special attention to environmental protection. These contradictory demands are the theme of this book

    Solar heating and hot water system installed at the Senior Citizen Center, Huntsville, Alabama

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    The solar energy system installed at the Huntsville Senior Citizen Center is described. Detailed drawings of the complete system and discussions of the planning, the hardware, recommendations, and other pertinent information are presented

    Implementación de un sistema fotovoltaico para reducir el consumo de energía convencional en un Sistema de riego tecnificado por aspersión en el estadio municipal César Flores Marigorda de Lambayeque

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    Esta tesis tiene por objetivo diseñar un método de energía renovable del sol para que con su posteriormente poner en marche y se logre reducir el consumo de energía convencional para el estadio municipal César Flores Marigorda de Lambayeque. De los resultados tenemos que se efectuó la conjetura de la energía eléctrica necesaria por el sistema de bombeo, obteniéndose un total de 384,60 h/ , para 2 días de funcionamiento semanal de la bomba instalada de 7,5 HP durante un mes, por un periodo de 8h por día de riego. Se calculó conforme a la propuesta, la energía promedio diaria para riego con un total de 12,82 h /día, que fue la energía de partida para el cálculo del suministro eléctrico con energía solar. Se obtuvo la información de irradiación solar encontrada en la página web de la NASA obteniéndose un valor bajo de 4,47kWh/m2 /día para el mes junio y un valor alto de 5,98kWh/m2 /día en el mes de noviembre; y el valor intermedio anual de irradiación solar de 5,38kWh/m2 /día. Se encontraron los datos de temperatura para todo el año 2019 de la estación meteorológica Lambayeque del SENAMHI con un valor bajo de 10, 9o C en el mes de julio y un valor alto de 33o C el mes de enero. Se dimensionaron y seleccionaron los componentes para el sistema de energía solar de autoconsumo con baterías obteniéndose: 30 celdas solares de la marca ERA SOLAR de 320 Wp, un Inversor Híbrido Trifásico de 10 kW Infinisolar, variador de velocidad ATV212-5,5 kW-7,5 hp-480V-trifásico-CEM clase c2-IP55; 24 baterías UPower 1700Ah 2V UP-GC42 2RE. El costo del sistema tiene un costo aproximado de S/ 132 112,11

    Merkmale der Flussgebietseinheit, Überprüfung der Umweltauswirkungen menschlicher Tätigkeiten und wirtschaftliche Analyse der Wassernutzung

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    Bericht an die Europäische Kommission gemäß Art. 15 Abs. 2 der Richtlinie 2000/60/EG des Europäischen Parlaments und des Rates vom 23. Oktober 2000 zur Schaffung eines Ordnungsrahmens für Maßnahmen der Gemeinschaft im Bereich der Wasserpolitik (Bericht 2005
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