953 resultados para tidal stream turbines
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Two announcements in sequence have shaken the energy debate on 18 and 19 June. Gazprom announced the signature of a Memorandum of Understanding with Shell, Exon and OMV for the construction of strings 3 and 4 of Nord Stream, aiming at doubling the current 55 bcm capacity of the corridor running in the Baltic sea bed and connecting the Russian terminal of Vyborg to Germany. On the day after, a €2 bn deal between Russia and Greece was signed for extending the Turkish Stream project into Greek territory. ...
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In September 2015, Gazprom and major European energy companies (Germany's E.ON and BASF/Wintershall, Austria's OMV, France’s ENGIE and Royal Dutch Shell) signed an agreement to double the Nord Stream gas pipeline’s capacity by 2019. The plan is to transport up to 55 billion additional cubic meters of gas a year to Germany through the Baltic Sea, bypassing Ukraine and other Central-Eastern European countries.
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In September 2015, Gazprom and major European energy companies (Germany's E.ON and BASF/Wintershall, Austria's OMV, France’s ENGIE and Royal Dutch Shell) signed an agreement to double the Nord Stream gas pipeline’s capacity by 2019. The plan is to transport up to 55 billion additional cubic metres of gas a year to Germany through the Baltic Sea, bypassing Ukraine and other Central-Eastern European countries.
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When the new European Commission started work in autumn 2014, the president of the Commission took great pride in calling it a ‘political Commission’, which will be big on big things and small on small. Whilst the EU is currently dealing with many crises, reality is that things do not come much bigger than Nord Stream II. Will this be a political Commission that stands by its principles, including respect for liberty, democracy, the rule of law and human rights? Will this Commission have the backbone to politically assess a project that threatens EU unity and its core values, undermines the Union’s commonly agreed commitment to building an Energy Union and facilitates Russia’s aggression against Ukraine? President Juncker’s controversial visit to Russia and meeting with President Putin on 16-17 June is a test-case: will this Commission be ready to defend its commitments and principles when discussing ‘economic issues’?
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Here, the pelagic carbonate system and the ?13C signature of dissolved inorganic carbonate (DIC) were investigated in a tidal basin of the southern North Sea, the Jade Bay, with respect to tidal cycles and a transect towards the North Sea in winter time (January and November, 2010). Physical parameters, major and trace elements, and nutrient concentrations were considered, too. Primary production and pelagic organic matter respiration were negligible during winter time. Both, the compositional variations on the transects as well as during the tidal cycles indicate the mixing of North Sea with fresh water. The combined spatial co-variations of different parameters indicate an introduction of fresh water that was enriched in DI12C, metabolites (e.g., ammonia), protons, and dissolved redox-sensitive elements (e.g., Mn2+). During the January campaign, the discharge via the flood gates was limited due to ice cover of the hinterland drainage ditches, allowing for an observation of tidal variations without significant mixing contributions from surface water discharges. Considering a binary mixing model with North Sea and fresh water as end-members, the extrapolated fresh water end-member composition for this campaign is estimated to contain about 3.8 mmol/kg DIC , and enhanced concentrations of NH4+, Mn2+, and protons compared to North Sea water. The fast temporal response of dissolved geochemical tracers on tidal variations in the Jade Bay indicates a continuous supply of a fresh water component. The measured composition of fresh waters entering the Jade Bay via flood gates (end of October, 2010) did not match the values estimated by the binary mixing model. Therefore, the overall fresh water component likely is a mixture between sources originating from flood gates and (in January) dominating submarine groundwater discharge entering the Jade Bay. This model is consistent with the results obtained during the November campaign, when a more important contribution from flood gates is expected and a more variable fresh water end-member is estimated. The co-variations of the concentrations and the stable carbon isotope composition of DIC are applied to evaluate possible superimposed sink-source-transformation processes in the coastal waters and a general co-variation scheme is suggested.
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"Performed under Contract No. HEW-105-76-1140."
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Performed under contract no. HEW-105-76-1140, National Center for Child Advocacy and prepared by members of InterAmerica Research Associates.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.