Sökning: "P O Johansson"

Hittade 5 avhandlingar innehållade orden P O Johansson.

  1. 1. The synthesis of chiral bidentate (N,N), (N,P) and (N,O) ligands and their use in metal-mediated asymmetric carbon-carbon bond formation

    Författare :Fredrik Johansson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Chemistry; Kemi; organisk kemi; Organic Chemistry;

    Sammanfattning : This thesis covers three projects based on the metal-mediated formation of new chiral centers in the prescence of chiral ligands. The first project, involving (N,N)- ligands, concerns the synthesis of some (C2-symmetric bis(aziridine) ligands and the use of these in the addition of organolithium reagents to N-aryl protected imines leading to enantioselectivities of up to 89%. LÄS MER

  3. 2. On hydroxyapatite modified peek implants for bone applications

    Författare :Pär Johansson; Malmö högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Dental Implants; Dentala implantat;

    Sammanfattning : People are living longer today than ever before, and the number of older adults will increase exponentially over the next coming years. However, that does not necessarily mean that they are living healthier. LÄS MER

  4. 3. Development and Applications of Tracking of Pellet Streams

    Författare :Andrzej Pyszniak; Tord Johansson; Markus Büscher; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PANDA; cryogenic target; pellet; pellet target; pellet tracking; Fysik med inriktning mot kärnfysik; Physics with specialization in Nuclear Physics;

    Sammanfattning : The development of a system for optical tracking of frozen hydrogen microsphere targets (pellets) was done. It is intended for the upcoming hadron physics experiment PANDA at FAIR, Darmstadt, Germany. LÄS MER

  5. 4. Boron Suboxide Based Thin Films

    Författare :Denis Music; Börje Johansson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Boron suboxide (BOx, x< 1.5) is a promising material for a wide range of applications. The elastic modulus (E) of 473 GPa has been reported for crystalline BO0.17, which tends to exhibit ultra-low friction as a direct consequence of boric acid (H3BO3) formation. LÄS MER

  7. 5. Värderingskonflikter i praktiken : Hantering av ambivalens vid en neonatal intensivvårdsavdelning

    Författare :Karin Götlind; Stina Johansson; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; Ambivalence; Ideological dilemmas; Neonatal intensive–care; Parental involvement; Production of knowledge; Professional decisionmaking; Work organization; Sociologi; Sociology; Sociologi; Sociology; sociologi;

    Sammanfattning : At neonatal intensive–care units conflicts between basic values, such as the one between saving life and minimizing suffering, are constantly present. This study focuses on how the ambivalence thus created is dealt with in practice by medical staff, specifically focusing on the significance of contextual factors and how the organisation shapes the process of handling ambivalence. LÄS MER