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

  1. 1. Synchrotron-based In Situ Electron Spectroscopy Applied to Oxide Formation and Catalysis

    Författare :Niclas Johansson; Synkrotronljusfysik; []
    Nyckelord :CO oxidation; Sonogashira cross-coupling; trilayer FeO; vicinal FeO; Mn III -salen; APXPS; XAS; Fysicumarkivet A:2017:Johansson;

    Sammanfattning : In this thesis, in situ ambient pressure X-ray photoelectron spectroscopy has been used to address chemical reactions on surfaces. The presented work aims at the investigation of the relation between pressure and adsorbate surface structures during catalytic reactions. LÄS MER

  3. 2. Aetiology in community-acquired pneumonia

    Författare :Niclas Johansson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Although community-acquired pneumonia (CAP) is a common and well-known disease, its microbial aetiology is still not well characterized. During the past few years nucleic acid detection using real-time polymerase chain reaction (PCR) has been developed for detection of many bacterial and viral pathogens causing respiratory tract infections. LÄS MER

  4. 3. Ecological implications of the production of toxic substances by fish killing phytoplankton species grown under variable N:P-ratios

    Författare :Niclas Johansson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; mixotrophy; grazing; allelopathic interactions; allelopathy; algae; phytoplankton; nutrient limitation; toxicity; Toxic haptophytes; fishkilling phytoplankton; Hydrobiology; marine biology; aquatic ecology; limnology; Marinbiologi; limnologi; akvatisk ekologi;

    Sammanfattning : The influence of different nutrient conditions on the production of toxins was studied in certain fishkilling haptophytes (e.g. Prymnesium parvum and Chrysochromulina polylepis). LÄS MER

  5. 4. In Memory of Narcissus : Aspects of the Late-Modern Subject in the Narcissus Theme 1890-1930

    Författare :Niclas Johansson; Torsten Pettersson; Björn Sundberg; Carin Franzén; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Narcissus; subject; selfhoood; modernity; myth; intertextuality; cultural semiotics; Juri Lotman; Renate Lachmann; André Gide; Hermann Hesse; Havelock Ellis; Isidor Sadger; Otto Rank; Sigmund Freud; Literature; Litteraturvetenskap;

    Sammanfattning : .... LÄS MER

  7. 5. Neonatal Exposure to Highly Brominated Diphenyl Ethers and Perfluorinated Compounds : Developmental Dependent Toxicity and Interaction

    Författare :Niclas Johansson; Per Eriksson; Anders Fredriksson; Henrik Viberg; Hellmuth Lilienthal; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; Ecotoxicology; ekotoxikologi;

    Sammanfattning : This thesis investigated the developmental neurotoxic effects of neonatal exposure to highly brominated diphenyl ethers (PBDEs) and perfluorinated compounds (PFCs), alone or in combinations, during a critical period of the brains’ rapid growth and development, in mice. The compounds investigated were the decaBDE (PBDE 209), nonaBDE (PBDE 206), octaBDE (PBDE 203), heptaBDE (PBDE 183), and three PFCs, PFOS, PFOA, and PFDA. LÄS MER