Sökning: "pine bark"

Visar resultat 21 - 25 av 33 avhandlingar innehållade orden pine bark.

  1. 21. Effects of silvicultural treatments in young Scots pine-dominated stands on the potential for early biofuel harvests

    Författare :Kristina Ulvcrona; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : The overall objective of the work underlying this thesis was to increase knowledge regarding growth of young Scots pine (Pinus sylvestris L.) - dominated mixed forests in northern Sweden and the potential for combining early biofuel harvest in such stands while leaving crop trees for future harvests. For this purpose, several studies were made. LÄS MER

  3. 22. Assessment of waters with complex contamination : Effect-based methods for evaluating wastewater treatment requirements and efficiency

    Författare :Veronica Ribé; Åke Forsberg; Monica Odlare; Emma Nehrenheim; Rune Berglind; Magnus Breitholtz; Mälardalens högskola; []
    Nyckelord :Effect-based test methods; wastewater treatment; ecotoxicology; bioassays; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : The access to clean water is one of the prerequisites for a modern, industrialized society. The amount of water withdrawn for human activities has risen exponentially during the last 100 years. This rise in water use is accompanied by the production of vast quantities of contaminated water. LÄS MER

  4. 23. Metal retention from leachate using Industrial Waste Products

    Författare :Emma Nehrenheim; Sylvia Waara; Hanna Obarska-Pemplowiak; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental engineering; Miljöteknik; Energi- och miljöteknik;

    Sammanfattning : Landfill leachate arises when water percolates through a landfill. The degree and type of pollution is dependent on the content of the landfill but also on a range of other factors, including the age of the landfill and the landfilling technique. LÄS MER

  5. 24. People-plant interrelationships : historical plant use in native Sami societies

    Författare :Anna-Maria Rautio; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES;

    Sammanfattning : Different plants have played an important role historically in the subsistence of the native Sami people of northern Fennoscandia. Generally, their use of plants have however been regarded as less vital in their overall subsistence and in comparison to the domesticated reindeer and the hunted game and fish. LÄS MER

  7. 25. Biochemical conversion of biomass to biofuels : pretreatment–detoxification–hydrolysis–fermentation

    Författare :Venkata Prabhakar Soudham; Jyri-Pekka Mikkola; Christer Larsson; Tom Birger Granström; Umeå universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lignocellulosic materials; Ionic liquids; Pretreatment; Inhibitors; Detoxification; Ferrous sulfate and hydrogen peroxide; reducing agents; alkaline treatments; Hydrolysis; Fermentation; Biofuels; biokemi; Biochemistry;

    Sammanfattning : The use of lignocellulosic materials to replace fossil resources for the industrial production of fuels, chemicals, and materials is increasing. The carbohydrate composition of lignocellulose (i.e. cellulose and hemicellulose) is an abundant source of sugars. LÄS MER