Sökning: "relative retention time"

Visar resultat 21 - 24 av 24 avhandlingar innehållade orden relative retention time.

  1. 21. Pharmacoepidemiological studies of rheumatoid arthritis : methodological considerations and applications

    Författare :Andrei Barbulescu; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Study I – Biological disease-modifying anti-rheumatic drugs (DMARDs) and the risk of gastrointestinal perforations: Study I was motivated by previous signals of an increased risk of lower gastro-intestinal perforations among rheumatoid arthritis (RA) patients treated with tocilizumab. The primary aim of study I was to compare the incidence of lower gastro-intestinal perforations between RA patients initiating the biological DMARDs tocilizumab, abatacept, rituximab and tumor necrosis factor inhibitors (TNFi). LÄS MER

  3. 22. Develop your memory strategies! Self-generated versus mnemonic strategy training in old age : maintenance, forgetting, transfer and age differences

    Författare :Anna Derwinger; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Memory training; aging; episodic memory plasticity; self-generated strategies; mnemonic strategies; numeric material; maintenance; transfer; forgetting; age differences;

    Sammanfattning : The general aim of this thesis was to further our understanding of episodic memory plasticity in normal aging, by examining the effectiveness of a mnemonic-strategy training program versus a self-generated memory strategy training program in healthy adults between 20 and 90 years old, using numeric materials. The effectiveness of training was evaluated in terms of immediate gains, transfer of skill, maintenance of skill, and forgetting of learned information. LÄS MER

  4. 23. Characterization of suspended particulate matter from freshwater : validation of a field filtration technique

    Författare :Fredrik Ödman; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Sammanfattning : A field filtration method for the concentration and separation of suspended particulate matter (SPM) from freshwater systems and the subsequent determination of major, minor, trace and ultra trace elements (Al, As, Ba, Be, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Hf, K, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Rb, S, Sb, Sc, Si, Sn, Sr, Ta, Th, Ti, Tl, U, V, W, Zn and Zr) is validated with respect to detection limits, precision, and bias. The validation comprises the whole procedure including filtration, sample digestion and instrumental analysis. LÄS MER

  5. 24. Free oligosaccharides and glycosylation of bile salt-stimulated lipase in human milk

    Författare :Eva Landberg; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Bile salt-stimulated lipase (BSSL) is a glycosylated protein present in milk at a concentration of 100-200 mg/L. It is an enzyme important for fat digestion in the newborn infant. The protein backbone contains one possible site for N-glyeosylation and several sites for 0-glyeosylation. LÄS MER