Sökning: "apparent time"

Visar resultat 16 - 20 av 402 avhandlingar innehållade orden apparent time.

  1. 16. The Earth : climate and anthropogenic interactions in a long time perspective

    Författare :Jörgen Olofsson; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; anthropogenic; climate change; land use; biodiversity; carbon; dynamic global vegetation model; Holocene; pre-industrial; pollen; bison;

    Sammanfattning : The Earth is a highly complex and dynamic system. Life has shaped the entire planet and evolved in response to living conditions. Ecosystems are heavily affected by climate. Rapidly changing conditions imply considerable stress on several species and ecosystems, as well as to the most dominant species on the planet. LÄS MER

  3. 17. Hydrothermal Depolymerisation of Kraft Lignin: The Influence of Capping Agents and Residence Time

    Författare :Anders Ahlbom; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; isopropanol; depolymerisation; capping agents; kraft lignin; glycerol; guaiacol; hydrothermal liquefaction;

    Sammanfattning : Lignin, the aromatic macromolecule found in wood and other lignocellulosic biomass, is envisioned as a future renewable source of aromatic compounds that can be used as, for example, chemicals, fuel additives and resins. A way in which this can be realised is by depolymerising the lignin once it has been isolated from the lignocellulosic biomass. LÄS MER

  4. 18. Dynamic Load Models for Power Systems - Estimation of Time-Varying Parameters During Normal Operation

    Författare :Ines Romero; Industriell elektroteknik och automation; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; voltage stability; Load modeling; modeling and identification; dynamic load models; normalization in reactive load models;

    Sammanfattning : Economic and environmental concerns will slow down the expansion of the transmission system in many countries. The addition of new transmission lines will be few and far between. The de-regulation of the power supply will introduce new power flow patterns on the bulk transmission systems. LÄS MER

  5. 19. Cutaneous malignant melanoma aspects of prognostic factors and time : trends in a Swedish population

    Författare :Eva Månsson-Brahme; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Melanoma; incidence; prognostic factors; survival; mortality; trends; familial; prevention;

    Sammanfattning : One of the aims of this thesis was to assess the possible impact of primary and secondary preventive activities in the population of Stockholm-Gotland with the objective to reduce the incidence and mortality from cutaneous melanoma. Another aim was to investigate whether thin melanomas and hereditary melanomas represent separate biologic entities. LÄS MER

  7. 20. Konsten att producera lärande demokrater

    Författare :Linnéa Holmberg; Mats Börjesson; Ulf Olsson; Björn Haglund; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; leisure-time centres; governmentality; pastoral care; ideological dilemmas; subjectification; confessional practice; constructions of desirable citizens; education; learning; Fritidshem; governmentality; pastoral omsorg; ideologiska dilemman; subjektivering; bekännelsepraktik; medborgarskapande; utbildning; lärande; Child and Youth Science; barn- och ungdomsvetenskap;

    Sammanfattning : This dissertation builds on the basic question of how individuals are formed and created as citizens in society today, and how individuals construct themselves as citizens in this society. It takes interest in how they are managed to govern themselves through specific constructions of citizenship, and looks at how the exercise of power establishes certain knowledge that affects their view of themselves and generates truths about how they are expected to live their lives. LÄS MER