Search for dissertations about: "oes"

Showing result 21 - 25 of 32 swedish dissertations containing the word oes.

  2. 21. Dental Anxiety in Adults - Psychosocial Aspects, Oral Health and Psychological Treatment

    Author : Viktor Carlsson; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; adults; attention deficit hyperactivity disorder; cognitive behavior therapy; dental anxiety; esthetics; oral health; oral health-related quality of life; psychological health; psychological treatment;

    Abstract : The aim of this thesis was to investigate relationships between dental anxiety (DA), psychosocial factors, oral health and oral health-related quality of life (OHRQoL) in adults, and to assess the efficacy of cognitive behavior therapy (CBT) as treatment for DA. Study I is a national Swedish survey, studies II and III are clinical cross-sectional studies on patients with severe DA, and study IV consists of a systematic review and a meta-analysis. READ MORE

  4. 22. Metastable orthorhombic Ta3N5 thin films grown by magnetron sputter epitaxy

    Author : Jui-Che Chang; Ching-Lien Hsiao; Jens Birch; Grzegorz Greczynski; Denis Music; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The semiconductor tritantalum pentanitride (Ta3N5) is a promising green-energy material for photoelectrolyzing water to produce oxygen and hydrogen owing to its proper bandgap of 2.0 ± 0.2 eV and band positions to redox potential of water. READ MORE

  5. 23. High-temperature corrosion properties of chromia- and alumina-forming alloys

    Author : Tommy Sand; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-temperature corrosion; Alumina scale; Chromia scale; Cr-evaporation; Nitridation; Oxidation;

    Abstract : Electricity production, transportation, and manufacturing industry are some of the largest sources of greenhouse gas emissions. In many cases, these processes are carried out at high temperature and energy efficiency is limited by material degradation, so-called ‘high-temperature corrosion’. READ MORE

  6. 24. Adhesion in the wheel-rail contact under contaminated conditions

    Author : Yi Zhu; Ulf Olofsson; Ines Lopez Arteaga; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adhesion; wheel-rail contact; contaminants; rough surfaces;

    Abstract : Railway vehicles require a certain level of adhesion between wheel and rail to operate efficiently, reliably, and economically. Different levels of adhesion are needed depending on the vehicle running conditions. READ MORE

  7. 25. Ash transformation in single-pellet combustion and gasification of biomass with special focus on phosphorus

    Author : Ali Hedayati; Marcus Öhman; Rainer Backman; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

    Abstract : The utilization of different biomass feedstocks in thermal conversion systems can contribute towards mitigation of global warming. However, the formation of different ash fractions (i.e. READ MORE