Sökning: "Analytical protocol"

Visar resultat 16 - 20 av 73 avhandlingar innehållade orden Analytical protocol.

  1. 16. Spatial analysis of lipids in tissue samples applying mass spectrometry imaging

    Författare :Masoumeh Dowlatshahi Pour; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SIMS; MALDI; Mass spectrometry imaging; Lipid; ME-SIMS; Sample preparation;

    Sammanfattning : Lipids are important naturally occurring components in all living cellular organisms. They serve as the main building blocks of cellular membranes, participate in many signaling pathways and are also stored as an energy source. LÄS MER

  3. 17. Fractionation of the stable silicon isotopes studied using MC-ICP-MS : analytical method developments and applications in geochemistry

    Författare :Emma Engström; Ben Reynolds; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Sammanfattning : In spite of the high Si abundance in natural systems, expected significant mass-dependent fractionations, and the importance of the element in many areas of the Earth sciences (focusing on e.g. LÄS MER

  4. 18. Enzyme selectivity as a tool in analytical chemistry

    Författare :Anders Hamberg; Karl Hult; Harry Brumer; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; substrate specificity; competing substrates; enantiomeric excess analysis; library screening; ladder sequencing; carboxypeptidase Y; 2-pyridylmethylamine; MALDI; Candia antarctica lipase B; pig liver esterase; horse liver alcohol dehydrogenase; acylated cyanohydrins; Biochemistry; Biokemi;

    Sammanfattning : Enzymes are useful tools as specific analytical reagents. Two different analysis methods were developed for use in the separate fields of protein science and organic synthesis. Both methods rely on the substrate specificity of enzymes. Enzyme catalysis and substrate specificity is described and put in context with each of the two developed methods. LÄS MER

  5. 19. Fractionation of the stable silicon isotopes : analytical method developments and selected applications in geochemistry

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

    Sammanfattning : During the last few decades, variations in the 'natural' isotopic abundances of stable elements (termed 'fractionation') have received considerable interest from the scientific community. Though analytical methods and techniques for the measurement of isotopic abundances with adequate figures of merit have been available for light elements (e.g. LÄS MER

  7. 20. Serine Hydrolase Selectivity : Kinetics and applications in organic and analytical chemistry

    Författare :Anders Hamberg; Karl Hult; Dick Janssen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Candida antarctica lipase B; monoacylation of diols; kinetic resolution; thermodynamics in enzyme catalysis; enzyme engineering; Biochemistry; Biokemi;

    Sammanfattning : The substrate selectivities for different serine hydrolases were utilized in various applications, presented in papers I-VI. The articles are discussed in the thesis in view of the kinetics of the enzyme catalysis involved. LÄS MER