Sökning: "cage"

Visar resultat 6 - 10 av 122 avhandlingar innehållade ordet cage.

  1. 6. Non Natural Aromatic Amino Acids Applications in cage-construction, metal ion coordination and asymmetric catalysis

    Författare :Ruxandra Ionescu; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; diethylzinc additions.; spectroscopy; metal ion coordination; cage-like compounds; Amino acids; C3-symmetry; Organic chemistry; Organisk kemi;

    Sammanfattning : Aromatic non-natural amino acids, the outstanding feature of which was the presence of several arms, were synthesised and their properties investigated. The amino acids were synthesised following a standard procedure starting with a Horner-Wadsworth-Emmons or a Heck reaction, which provided didehydroamino acids. LÄS MER

  3. 7. Home-cage monitoring of mouse behaviours across life-span

    Författare :Karin Pernold; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background and aim: The academic research involving animal testing is struggling with problems of reproducibility and a few of the specific reasons pointed out are for example insufficient reporting of animal strains and protocol details. It is everyone’s responsibility to follow the 3R’s (Replace, Reduce, Refine) and to ensure that the model used is well characterized. LÄS MER

  4. 8. Home-cage monitoring of activity patterns of laboratory mice

    Författare :Karin Pernold; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The mouse, deriving from the house mouse, is the most common species used in biomedical research, and offers great advantages for researchers to study gene functions in a complex living organism. However, using animals as research models comes with a moral obligation to follow the 3Rs, (Refine, Reduce, Replace) and proved the best possible husbandry and welfare in order to secure scientific rigor. LÄS MER

  5. 9. From Air to Aria. Relevance of Respiratory Behaviour to Voice Function in Classical Western Vocal Art

    Författare :Monica Thomasson; KTH; []
    Nyckelord :Abdominal wall; breathing; consistency; inhalation; lung volume; respiratory behaviour; phonation; rib cage; singers; singing; subglottal pressure; tracheal pull; vertical laryngeal position; voice source.;

    Sammanfattning : While previous studies of opera singers’respiratorybehaviour have focused on kinematic or dynamic aspects mainly,this thesis attempts to adopt a broader perspective. Not onlylung volumes, rib cage and abdominal wall kinematics areconsidered, but also the effects of lung volumes and respiratorybehaviour on phonation characteristics. LÄS MER

  7. 10. Frequency changes and equilibria in experimental populations of Drosophila melanogaster with three lethal carrying fourth chromosomes

    Författare :Agneta Södergren; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Drosophila melanogaster; cage populations; fourth chromosome lethals; fitness components; equilibrium conditions; selective values;

    Sammanfattning : Populations where three different lethals are segregating as alleles have been analysed for the conditions of equilibrium and for the trends during elimination of one allele. Early and late selection as well as sexdependent and sexindependent selection has been taken into consideration. LÄS MER