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Visar resultat 1 - 5 av 7 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Endemic and epidemic Streptococcus pyogenes strains : reservoirs in recurrent pharyngotonsillitis reservoirs in recurrent pharyngotonsillitis reservoirs in recurrent pharyngotonsillitis

    Författare :Anders Österlund; Uppsala universitet; []
    Nyckelord :Medical sciences; Streptococcus pyogenes; epidemiology; invasive disease; recurrentpharyngotonsillitis; RAPD; intracellular; biopsy culture; tonsils; immunohistochemistry; electron microscopy; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Clinical Bacteriology; klinisk bakteriologi;

    Sammanfattning : The bacterium Streptococcus pyogenes is a common human pathogen known to cause bothuncomplicated and severe infections. Epidemics of invasive disease caused by S. pyogenesserotype T1 were seen in the county of Uppsala, Sweden, in 19881989 and 1994. LÄS MER

  3. 2. Electrical Properties of Nanocrystalline WO3 for Gas Sensing Applications

    Författare :Anders Hoel; Peter Heszler; Claes-Göran Granqvist; Lars Österlund; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; Nanoparticle; Gas sensors; Tungsten trioxide; Teknisk fysik; Engineering physics; Teknisk fysik;

    Sammanfattning : Tungsten trioxide is a material with a variety of application areas. For example, the material is used within thin film technologies as electrochromic material in smart windows, as electrochemically functional material in thermal control applications or as active layer in gas sensing application. LÄS MER

  4. 3. Activation of lung epithelial cells by group 2 mite allergens

    Författare :Camilla Österlund; Anders Bucht; Thomas Sandström; Jan Wahlström; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; group 2 mite allergens; Der p 2; Der f 2; Eur m 2; Lep d 2; airway epithelium; lungmedicin; Lung Medicine;

    Sammanfattning : Throughout many parts of the world house dust mites (HDM) are considered as a major source of indoor aeroallergens and they are powerful inducers of allergic diseases. Proteolytic HDM allergens are recognised as being able to directly activate respiratory epithelial cells and thereby actively participate in innate immune responses. LÄS MER

  5. 4. Redox models in chemistry : A depiction of the conceptions held by secondary school students of redox reactions

    Författare :Lise-Lotte Österlund; Margareta Ekborg; Anders Berg; Christiane Funk; Astrid Bulte; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; science education; redox reaction; model; inorganic chemistry; organic chemistry; biochemistry; students conceptions; textbook; Other chemistry; Övrig kemi; didactics of chemistry; kemididaktik;

    Sammanfattning : According to previous research, students show difficulties in learning redox reactions. By the historical development different redox models exist to explain redox reactions, the oxygen model, the hydrogen model, the electron model and the oxidation number model. LÄS MER

  7. 5. Adsorption and reactions of sulfur dioxide on TiO2 surfaces : Fundamental studies on single crystals and nanoparticles

    Författare :David Langhammer; Lars Österlund; Anders Sandell; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Titanium dioxide (TiO2) is a material that is well-known among researchers in environmental science but is perhaps less well-known by the general public. It is commonly used in white paint because of its ability to scatter visible light, and for this reason it is manufactured at a large industrial scale. LÄS MER