Sökning: "Fossil farmland"

Hittade 4 avhandlingar innehållade orden Fossil farmland.

  1. 1. Landskap och ödesbölen : Jämtland före, under och efter den medeltida agrarkrisen

    Författare :Hans Antonson; Mats Widgren; Ulf Jansson; Stefan Brink; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Agrarian history; Early modern period; Sweden; Brunflo; Revsund; Sundsjö; Parish; Settlement; Deserted farms; Hamlet; Farmstead; The Black Death; Climate; Change of agrarian regime; Ownership; Forms of cultivation; Historical maps; Medieval diplomas; Registers of taxpayers; Fossil farmland; Field mapping; Archaeology; Human geography; Kulturgeografi;

    Sammanfattning : This study examines landscape change in the Province of Jämtland during c. 1000–1750 AD. Settlement and arable cultivation are two of the most important sources in this study. LÄS MER

  3. 2. Anaerobic digestion of crop and waste biomass: Impact of feedstock characteristics on process performance

    Författare :Nges Ivo Achu; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Anaerobic digestion; Biofertilizer; Renewable energy; Sustainable operation;

    Sammanfattning : Anaerobic digestion provides an array of positive environmental benefits such as reducing greenhouse gas emissions, replacing mineral fertilizers, producing renewable energy and treating waste. However, pitfalls in anaerobic digestion such as poor methane yields, process instability, process failure and regional shortages of feedstock have limited the full exploitation of the anaerobic digestion process. LÄS MER

  4. 3. Condensation irrigation : simulations of heat and mass transfer

    Författare :Jenny Lindblom; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

    Sammanfattning : There is a growing water demand in the world. Along with the deterioration of existing water supplies, the escalating world population leads to the assumption that two out of three people will lack sufficient freshwater by the year 2025. LÄS MER

  5. 4. System studies of biogas production : comparisons and performance

    Författare :Emma Lindkvist; Magnus Karlsson; Mats Söderström; Maria Johansson; Ola Norrman Eriksson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Biogas has the potential to be part of the transition towards a more sustainable energy system. Biogas is a renewable energy source and can play an important role in modern waste management systems. Biogas production can also help recirculate nutrients back to farmland. LÄS MER