Sökning: "Michael Nielsen"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Michael Nielsen.

  1. 1. Characterization of Polypeptides by Tandem Mass Spectrometry Using Complementary Fragmentation Techniques

    Författare :Michael Lund Nielsen; Roman A. Zubarev; Per Andrén; Ole Nörregaard Jensen; Uppsala universitet; []
    Nyckelord :Analytical chemistry; Mass Spectrometry; Electron capture dissociation ECD ; Collision-activated dissociation CAD ; Proteomics; Post-translational modifications; De Novo sequencing; Bioinformatics; Analytisk kemi;

    Sammanfattning : In the growing field of proteomics identification of proteins by tandem mass spectrometry (MS/MS) is performed by matching experimental mass spectra against calculated spectra of all possible peptides in a protein database. One problem with this approach is the false-positive identifications. LÄS MER

  3. 2. Inferring Land Use from Remote Sensing Imagery : A context-based approach

    Författare :Michael Meinild Nielsen; Bo Malmberg; Anders Wästfelt; Douglas A. Stow; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; land use; remote sensing; urban remote sensing; image analysis; segmentation; spatial context; land cover; land cover configuration; farming types; bark beetle; dead trees; forest inventory; kulturgeografi; Human Geography;

    Sammanfattning : This doctoral thesis investigates the potential of classification methods based on spatial context to infer specific forms of land use from remote sensing data. The problem is that some types of land use are characterized by a complex configuration of land covers that traditional per-pixel based methods have problems classifying due to spectral heterogeneity. LÄS MER

  4. 3. Carbon Nanostructures – from Molecules to Functionalised Materials : Fullerene-Ferrocene Oligomers, Graphene Modification and Deposition

    Författare :Michael Nordlund; Helena Grennberg; Mogens Brøndsted Nielsen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fullerenes; Graphene; Deposition; Functionalization; Organometallic complexes; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Sammanfattning : The work described in this thesis concerns development, synthesis and characterisation of new molecular compounds and materials based on the carbon allotropes fullerene (C60) and graphene.A stepwise strategy to a symmetric ferrocene-linked dumbbell of fulleropyrrolidines was developed. LÄS MER

  5. 4. Species interactions and energy transfer in aquatic food webs

    Författare :Jens Munk Nielsen; Monika Winder; Sture Hansson; Michael T. Brett; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Aquatic food webs; zooplankton; stable isotope analysis amino acids; molecular diet analysis; Marine Ecology; marin ekologi;

    Sammanfattning : Food webs are structured by intricate nodes of species interactions which govern the flow of organic matter in natural systems. Despite being long recognized as a key component in ecology, estimation of food web functioning is still challenging due to the difficulty in accurately measuring species interactions within a food web. LÄS MER

  7. 5. Mästare och minnesmärken : Studier kring vikingatida runristare och skriftmiljöer i Norden

    Författare :Magnus Källström; Rune Palm; Inger Larsson; Michael Lerche Nielsen; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Rune carvers; Runic inscriptions; Rune-stones; Viking Age; Personal names; Åsmund Kåresson; Rune-stone custom; Scandinavian languages; Nordiska språk; Scandinavian Languages; nordiska språk;

    Sammanfattning : The aim of this study is to determine what can be known about the people who were able to write runes during the Viking Age. The investigation is based on the runecarvers’ own statements about themselves and their work, which is normally found in the signature or the carver formula of the inscriptions. LÄS MER