Search for dissertations about: "Helical"

Showing result 1 - 5 of 254 swedish dissertations containing the word Helical.

  2. 1. Interaction and disorder in helical conductors

    Author : Anders Ström; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; physics; helical conductors; topological insulators; Anderson localization; condensed matter;

    Abstract : Different effects from electron-electron interactions and disorder in helical and quasi-helical conductors are studied using bosonisation and renormalisation group methods. The combined effects of Rashba spin-orbit interaction and magnetic Kondo-type impurities in the helical edge liquids of quantum spin Hall insulators, are investigated. READ MORE

  4. 2. Structural Transitions in Helical Peptides : The Influence of Water – Implications for Molecular Recognition and Protein Folding

    Author : Martin Lignell; Hans-Christian Becker; Kaare Teilum; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; protein dynamics; protein folding; molten globule; time-resolved fluorescence spectroscopy; CD spectroscopy; molecular recognition; structure-function paradigm; Chemical physics; Kemisk fysik; Physical Chemistry; Fysikalisk kemi;

    Abstract : Fluctuations in protein structure are vital to function. This contrasts the dominating structure-function paradigm, which connects the well-defined three-dimensional protein structure to its function. However, catalysis is observed in disordered enzymes, which lack a defined structure. READ MORE

  5. 3. Modelling of compact resonators

    Author : Pierre-Luc Regaud; KTH; []
    Keywords : Acoustic; Resonator compact; Fold; End correction; Spiral; Helical; Higher order modes; 2-port; Side-branch; Mode matching; Collocation; Weak formulation; Harmonic;

    Abstract : .... READ MORE

  6. 4. Analyses of Spur and Helical Gears

    Author : Anette Andersson; Maskinelement; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vacuum technology; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik; hydraulics; Teknik; Mechanical engineering; Technological sciences; misalignment; contact ratio; load distribution; transmission error; tooth contact analysis;

    Abstract : The thesis contains three papers that comprise studies of the dynamic behaviour of involute spur and helical gears, and one paper that describes a method to determine the influence of misalignment on the static helical gear tooth stress. In the first study, the influence of the contact ratio on the dynamic response of a spur gear was examined. READ MORE

  7. 5. Environmental influence on alpha-helical peptides

    Author : Ana Caballero Herrera; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MD alpha helix; C-peptide; membrane proteins; hydrogen bonds; packing; dynamics;

    Abstract : Most proteins at physiological conditions fold into a native functional three-dimensional conformation. The stability of the Native state is a balance between different interactions within the protein and with the solvent. READ MORE