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Flying and the pilot were significant metaphors of fascism's mythical modernity. Fernando Esposito traces the changing meanings of these highly charged symbols from the air show in Brescia, to the sky above the trenches of the First World War to the violent ideological clashes of the interwar period.

The use of trace elements to promote biogas production features prominently on the agenda for many biogas-producing companies. However, the application of the technique is often characterized by trial-and-error methodology due to the ambiguous and scarce basic knowledge on the impact of trace elements in anaerobic biotechnologies under different process conditions. This book describes and defines the broad landscape in the research area of trace elements in anaerobic biotechnologies, from the level of advanced chemistry and single microbial cells, through to engineering and bioreactor...