Avancerad sökning

Visar resultat 1 - 5 av 29 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Pre-treatment of substrates for anaerobic digestion : potential and development needs

    Författare :My Carlsson; Erik Dahlquist; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Waste Science and Technology; Avfallsteknik;

    Sammanfattning : Substrate pre-treatment has been gaining interest in anaerobic digestion (AD) as a means to increase biogas yields with nowadays more diversified substrate sources. The objective of this thesis is to identify improvement potentials and development needs within applications of substrate pretreatment in anaerobic digestion (AD) based on literature and specific examples, with special focus on the impact assessment and exemplified by the case of electroporation(EP) pre-treatment. LÄS MER

  3. 2. When and why is pre-treatment of substrates for anaerobic digestion useful?

    Författare :My Carlsson; Hinrich Uellendahl; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Waste Science and Technology; Avfallsteknik;

    Sammanfattning : Anaerobic digestion (AD) plays a key role in the recovery of renewable energy, in the form of biogas, and nutrients from waste materials. Pre-treatment of AD substrates has the potential to improve process performance in terms of increased methane yield and solids reduction, but pretreatments are not yet widely implemented into full-scale AD systems. LÄS MER

  4. 3. Hovpolitik : Hedvig Elisabeth Charlotte som politisk aktör vid det gustavianska hovet

    Författare :My Hellsing; Christina Carlsson Wetterberg; Mikael Alm; Karin Sennefelt; Örebro universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Hedvig Elisabeth Charlotte; Gustaf III; familjen von Fersen; gustavianska hovet; elitkvinnor; politiska praktiker; hovpolitik; politiska sfärer; Historia; History;

    Sammanfattning : This dissertation examines political life at the Swedish Gustavian Court through Duchess Charlotte (1759–1818). She was the Swedish monarch’s sister-in-law and well-known for her political memoirs. This study reassesses the Duchess as a political agent in her own right by taking into account earlier neglected sources. LÄS MER

  5. 4. Nitrogen uptake and assimilation during Norway spruce somatic embryogenesis : investigating the role of glutamine

    Författare :Johanna Carlsson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Sweden is currently experiencing shortage of Norway spruce (Picea abies) seeds due to e.g. irregular flowering and the recent year’s outbreaks of pests and pathogens destroying cones and seeds. LÄS MER

  7. 5. The sky is blue

    Författare :Tina Carlsson; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Feyerabend; story; subjective; sky; change; artistic research;

    Sammanfattning : Through its works the sky is blue wants to show that both institutional and subjective limitations are present in our lives but that we also have the ability to go beyond these limitations by way of our dreams, our fantasies and our visions. I maintain that this ability, which is built into the title’s adamant claim that the sky is blue, carries within it the possibility to change the present. LÄS MER