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The editorial introduces papers mostly presented at the 22nd session of the biennial Permanent European Conference for the Study of the Rural Landscape (PECSRL) in the sub-theme Interface between Marx and Brussels. The title of the Conference was European Rural Future: Landscape as an Interface and it was held from 4th-9th of September 2006 in Berlin and Hubertusstock, Brandenburg, Germany. The place and time were liminal as European Union (EU) accession included eight post-communist states on 1st of May 2004. The papers that make up this twin special issue address the interface between the East/West and the past/future each uniquely.
Shipping emits a variety of air pollutants: sulphur dioxide (SOx), nitrogen oxides (NOx), carbon dioxide (CO2) and particulate matter PM. Air pollutant emissions from maritime transport can be transported over long distances and thus increasingly contribute to air quality problems. Key environmental regulations (international and European) coming into force in this decade address emissions of SOx, NOx, CO2 and PM to control and limit their impact in the atmosphere. In the European Union, accordingly to the legal regulations, in the sulphur emission control areas the required SOx content of fuel will be reduced from 1.5 % to 0.1 % beginning January 2015. Globally, from 2020 onwards, ships operating in all other European Sea areas will have to use fuels with sulphur content of 0.5 % or less.
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 European Commission. Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on energy efficiency, amending Directives 2009/125/EC and 2010/30/EU and repealing Directives 2004/8/EC and 2006/32/EC Text with EEA
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Lauma Zihare, Indra Muizniece and Dagnija Blumberga
 Rodzkin A., Kundas S., Charnenak Y., Khroustalev B., Wichtmann W. The Assessment of Cost of Biomass from Post-Mining Peaty Lands for Pellet Fabrication. Environmental and Climate Technologies 2018:22(1):118–131. doi:10.2478/rtuect-2018-0008
 Priedniece V., Spalvins K., Ivanovs K., Pubule J., Blumberga D. Bioproducts from potatoes. A review. Environmental and Climate Technologies 2017:21(1):18–27. doi:10.1515/rtuect-2017-0013
 Zihare L., Blumberga D. Market opportunities for cellulose products from combined
Aiga Barisa, Ilze Dzene, Marika Rosa and Kristine Dobraja
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 Curry N., Pillay P. Biogas prediction and design of a food waste to energy system for the urban environment. Renewable Energy 2012:41:200-209. doi:10.1016/j.renene.2011.10.019
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