Sökning: "Olof Persson"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Olof Persson.

  1. 1. Development of new characterization techniques for III-V nanowire devices

    Författare :Olof Persson; Synkrotronljusfysik; []
    Nyckelord :STM; XPS; Semiconductor nanowires; nanowire devices; top contact mode; HAXPES; Fysicumarkivet A:2017:Persson;

    Sammanfattning : This dissertation presents the new methods and techniques developed to investigate the properties of nanowires (NWs) and NW devices and the results obtained using these methods. The growth and characterization of NWs have become a large research field because NWs have been shown to improve the properties of many semiconductor applications such as transistors, solar cells, and light emitting diodes. LÄS MER

  3. 2. En aktionsforskningsstudie om undervisning och lärande för hållbar utveckling

    Författare :Lena Persson; Per-Olof Wickman; Iann Lundegård; Claes Malmberg; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Action research; pluralistic education tradition; action competence; student; teacher and researcher reflection; Subject didactics; Ämnesdidaktik; naturvetenskapsämnenas didaktik; Science Education;

    Sammanfattning : Researchers in environmental education and education for sustainable development (ESD) have discussed in what way young people’s experience impact their action competence (e.g. Almers 2009; Schnack 1996; Breiting &Mogensen 1999; Lundegård 2007). LÄS MER

  4. 3. Collaborative development of resource efficient district heating in Sweden

    Författare :Sofia Persson; Olof Hjelm; Sara Gustafsson; Mikael Ottosson; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : An increased recovery of excess heat from industrial processes and thermal power generation could significantly reduce energy demands. Industrial excess heat-based district heating systems are generally considered resource efficient because they reduce the use of fossil fuels and the emissions of greenhouse gases. LÄS MER

  5. 4. Enhanced District Heating Technology : Maintaining Future System Feasibility

    Författare :Helge Averfalk; Sven Werner; Urban Persson; Mei Gong; Patrick Lauenburg; Kerstin Sernhed; Per-Olof Johansson Kallioniemi; Louise Ödlund; Högskolan i Halmstad; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : When heat demand and high temperature heat supply gradually decreases in the future, then it will effect district heating systems ability to compete on the heat market. A good way to mitigate less district heating feasibility is to operate systems with lower temperature levels and the most conceivable way to achieve lower temperature levels is to decrease return temperatures. LÄS MER

  7. 5. Community participation and social patterning in cardiovascular disease intervention

    Författare :Inger Brännström; Lars-Åke Persson; Inga-Britt Lindblad; Martin Johansson; Stig Wall; Sven-Olof Isacsson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cardiovascular disease; diabetes; prevention; social factors; evaluation; social epidemiology; folkhälsovetenskap; Epidemiology; epidemiologi; folkhälsa; Public health;

    Sammanfattning : This study addresses health policy and public health in the field of cardiovascular disease (CVD) on the local level in Sweden. The overall aim is to contribute to the assessment of structural and social conditions within public health by analysing participation processes and outcome patterns in a local health programme. LÄS MER