Sökning: "Andreas Persson"

Visar resultat 6 - 10 av 16 avhandlingar innehållade orden Andreas Persson.

  1. 6. X-ray Absorption Spectroscopy on Nano-Magnet Arrays and Thin Films : Magnetism and Structure

    Författare :Andreas Persson; Dimitri Arvanitis; Cormac McGuinness; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; self organization; nano-magnet; xmcd; exafs; peem; magnetism; Surfaces and interfaces; Ytor och mellanytor; Magnetism; Magnetism; Materiefysik; Physics of Matter;

    Sammanfattning : The magnetic and structural properties of nano magnet arrays and ferromagnetic thin films are investigated. Circular x-rays are used and extensive use is made in this Thesis of the X-ray Magnetic Circular Dichroism (XMCD) technique. By means of the XMCD magneto-optic sum rules the values of the orbital and spin moments are determined. LÄS MER

  3. 7. Palladium(II)-Catalyzed Oxidative Cyclization Strategies : Selective Formation of New C-C and C-N Bonds

    Författare :Andreas K. Å. Persson; Jan-Erling Bäckvall; Matthew Sigman; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbocyclization; Palladium Catalysis; Oxidation; Cyclization; Enallenes; Aza-Enallenes; Dienallenes; Allenylation; Oxazolidinones; Biomimetic; Arylation; Borylation; Transmetallation; organisk kemi; Organic Chemistry;

    Sammanfattning : The main focus of this thesis has been directed towards preparation and oxidative carbocyclization of en-, dien- and aza-enallenes.In the first part of this thesis, a stereoselective oxidative carbocyclization of dienallenes was realized. LÄS MER

  4. 8. Inner Experience : An Analysis of Scientific Experience in Early Modern Germany

    Författare :Andreas Rydberg; Mats Persson; Torbjörn Gustafsson Chorell; Kristiina Savin; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; scientific experience; inner experience; inner senses; living experience; psychometrics; psychological experiments; cultura animi; spiritual exercise; meditation; aesthetics; Pietism; Enlightenment; Christian Wolff; Hermann Francke; Alexander Baumgarten; Georg Ernst Stahl; Friedrich Hoffmann; History of Sciences and Ideas; Idé- och lärdomshistoria;

    Sammanfattning : In the last decades a number of studies have shed light on early modern scientific experience. While some of these studies have focused on how new facts were forced out of nature in so-called experimental situations, others have charted long-term transformations. LÄS MER

  5. 9. Development of molecular recognition by rational and combinatorial engineering

    Författare :Andreas Jonsson; Stefan Ståhl; Mats Persson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Affibody molecule; albumin binding domain; protein engineering; phage display; amyloid beta peptide; TNF; HSA; Molecular biology; Molekylärbiologi;

    Sammanfattning : Combinatorial protein engineering, taking advantage of large libraries of protein variants and powerful selection technology, is a useful strategy for developing affinity proteins for applications in biotechnology and medicine. In this thesis, two small affinity proteins have been subjected to combinatorial protein engineering to improve or redirect the binding. LÄS MER

  7. 10. The neuropeptide VIP and the IL-6 family of cytokines in bone : effects on bone resorption, cytokine expression and receptor signalling in osteoblasts and bone marrow stromal cells

    Författare :Emma Persson; Ulf Lerner; Andreas Kindmark; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; osteoblast; bone resorption; cytokines; IL-6; neuropeptides; VIP; transcription factor; Cell biology; Cellbiologi;

    Sammanfattning : Bone tissue is continuously degraded and rebuilt to respond to the needs of the body. Cells of the osteoblast lineage are responsible for the formation of bone, whereas the resorption of bone tissue is carried out by osteoclasts. LÄS MER