278 resultados para Bande passante


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Welsch (Projektbearbeiter): Der Wiener Sicherheitsausschuß sieht seine oberste Aufgabe in der Gewährleistung der ungestörten Arbeit des Reichstages, an welchen er auch die Entscheidung über sein Fortbestehen oder seine Auflösung delegiert hat. Bekanntmachung, eine vom Demokratischen Verein verfaßte Adresse nicht nur der parlamentarischen Linken in Frankfurt, sondern der ganzen dortigen Nationalversammlung vorzulegen

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Abraham Geiger

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The Mt. Amiata volcano (Tuscany, central Italy) hosts the second largest geothermal field of Italy. Its SW and NE sectors are characterized by the presence of several CO2-rich (mayor que95% by vol.) gas discharges. An intense Hg mining activity had taken place from the 19th century up to the end of the ?70s, particularly close to Abbadia San Salvatore, during which two drillings (Acqua Passante and Ermeta) intercepted a CO2-rich gas fertile horizon. The related gases are emitted in the atmosphere since 1938 and 1959, respectively, causing severe concerns for the local air quality. In this work the results of a geochemical and isotopic survey carried out on these gas emissions from March 2009 to January 2014 are presented. CO2 fluxes from both the two wells and soil from an area of about 653,500 m2 located between them were measured. The two wells are emitting up to 15,000, 92 and 8 tons y-1 of CO2, CH4 and H2S, respectively, while the computed soil CO2 output was estimated at 4,311 ton y-1. The spatial distribution of the CO2 soil flux suggests the presence of preferential patterns, indicating sites of higher permeability. Since the local municipality is evaluating the possibility to plug the Ermeta vent, a temporarily closure should first be carried out to test the possible influence of this operation on the diffuse soil degassing of deep-originated CO2 in the surrounding area. This implies that diffuse soil gases should carefully be monitored before proceeding with its definitive closure.

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Mode of access: Internet.

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"Die Übersetzung wurde nach der zwölfbändigen 'New and complete copyright edition of the works of Ralph Waldo Emerson. Riverside edition' gearbeitet."

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"Nachrichten von Klopstocks leben:" p. 804-809.