Deezer 21 December, Deezer announced a new service level offering two hours of free, ad-supported music streaming a month, available to users worldwide, the company's first free music streaming service outside France. CEO Dauchez said that Deezer was also looking for a partner to introduce service in the United States, who was "able to provide us with a significant volume of subscribers" to help offset what he called the "unbelievably high" costs of entering the US market. As of December 2012, Deezer had about three million users paying for subscriptions, out of a monthly active user base of about seven million,
Shrouded tidal turbine Shrouded tidal turbine The shrouded tidal turbine is an emerging tidal stream technology that has a turbine enclosed in a venturi shaped shroud or duct (ventuduct), producing a sub atmosphere of low pressure behind the turbine. The venturi shrouded turbine is not subject to the Betz limit and allows the turbine to operate at higher efficiencies than the turbine alone by increasing the volume of the flow over the turbine. Claimed improvements vary, from 1.15 to 4 times higher power output than the same turbine minus the shroud. The Betz limit of 59.3% conversion efficiency for a turbine in an