Sökning: "VO2"

Visar resultat 1 - 5 av 46 avhandlingar innehållade ordet VO2.

  1. 1. VO2-based Thermochromic and Nanothermochromic Materials for Energy-Efficient Windows : Computational and Experimental Studies

    Författare :Shuyi Li; Claes-Göran Granqvist; Gunnar Niklasson; Ivan Parkin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; VO2; thermochromism; nanothermochromics; energy efficient windows; optical modeling; effective medium theory; thin film characterization; doping;

    Sammanfattning : VO2-based films are thermochromic and exhibit high or low infrared transmittance when the temperature is below or above a critical temperature. The thermochromic switching is passive and reversible, and therefore VO2 based films are promising for energy-efficient window appli­cations. LÄS MER

  3. 2. Novel electrolytes for next-generation hybrid supercapacitors - Investigating the interaction between electrolyte and electrode

    Författare :Simon Lindberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ionic liquids; NaTFSI; superconcentrated; non-aqueous; VO2; MnO2; pseudocapacitance; Hybrid supercapacitors;

    Sammanfattning : The storage of electrical energy is of outmost importance in today’s society, ranging from cell phones to large scale energy storage of intermittent electricity sources. Batteries, that are most commonly used, struggle with low power density and limited cycle lifetime. LÄS MER

  4. 3. Aerobic fitness and healthy brain aging : cognition, brain structure, and dopamine

    Författare :Lars Jonasson; Carl-Johan Boraxbekk; Katrine Riklund; Emrah Düzel; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Aerobic exercise; VO2; working memory; executive function; freesurfer; striatum; dopamine; D2-receptors; [11C]raclopride;

    Sammanfattning : Background: Performing aerobic exercise and maintaining high levels of aerobic fitness may have positive effects on both brain structure and function in older adults. Despite decades of research however, there is still a rather poor understanding of the neurocognitive mechanisms explaining the positive effects of aerobic exercise on cognition. LÄS MER

  5. 4. Thermochromic VO2-based materials for smart windows : Progress towards applications in buildings

    Författare :Yuxia Ji; Granqvist Claes G.; Niklasson Gunnar A.; Lars Österlund; Dimitra Vernardou; Uppsala universitet; []
    Nyckelord :Thermochromic; Vanadium dioxide; Smart windows; Engineering Science with specialization in Solid State Physics; Teknisk fysik med inriktning mot fasta tillståndets fysik;

    Sammanfattning : Vanadium dioxide is a well-known thermochromic material, whose optical properties can be varied reversibly in response to fluctuation of temperature. It is attractive in various fields due to its unique properties as well as its prospective applications. LÄS MER

  7. 5. Early perturbations in lipid metabolism in insulin resistance

    Författare :Else Hellebö Johanson; Göteborgs universitet; []
    Nyckelord :insulin resistance; nateglinide; peak VO2; postprandial; relatives; triglyceride-rich lipoproteins; visceral fat; VLDL;

    Sammanfattning : Subjects with the Metabolic Syndrome with or without type 2 diabetes are at excess risk for developing cardiovascular disease. The mechanisms are still not completely understood. Resistance to insulin-stimulated glucose uptake is associated with several metabolic and hemostatic risk factors for cardiovascular disease. LÄS MER