Sökning: "stiffening"

Visar resultat 21 - 25 av 33 avhandlingar innehållade ordet stiffening.

  1. 21. Nanowires and Neural interfaces. Biocompatibility in the brain

    Författare :Lina Gällentoft; NanoLund: Centre for Nanoscience; []
    Nyckelord :neural interface; neurons; BMI; nanowires; tissue responses; rat; biocompatibility; astrocytes; microglia;

    Sammanfattning : Chronic neural interfaces that are able to record or stimulate neurons in the CNS are valuable instruments in use today and they hold great promise for the future both within neuroscience research and in the clinic. However, a major obstacle is that they show a decline in performance over time. LÄS MER

  3. 22. Neuromechanical control of the spine

    Författare :Paul Hodges; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Control of the spine is complex. The spine is inherently unstable and dependent on the contribution of muscles. Yet there is considerable redundancy in the motor system with many muscles that act on the trunk. LÄS MER

  4. 23. Mechanics of paper webs in printing press applications

    Författare :Artem Kulachenko; Sören Östlund; Thomas Abrahamsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Travelling webs; skew tension profiles; mixed dynamic formulation; fluting; Other engineering mechanics; Övrig teknisk mekanik;

    Sammanfattning : The mechanics of paper is a difficult subject because paper is a unique material. It is very thin, flexible at bending, unstable in compression and stiff at tension. Dealing with paper we have to account for orthotropy and heterogeneities created during the manufacturing process. LÄS MER

  5. 24. Coupled vibrations in horizontal and vertical rotor-bearings systems

    Författare :Jean-Claude Luneno; Magnus Karlberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technology - Engineering mechanics; Teknikvetenskap - Teknisk mekanik; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : For dynamical systems having several degrees of freedom, motion in one direction can induce motion in the other and/or vice versa. This means that there is a certain coupling between these two motions. Coupling can in some cases be a source of instability that causes self-excited vibrations in rotating machinery. LÄS MER

  7. 25. Cardiovascular function in 6-year-old children born extremely preterm

    Författare :Lilly-Ann Mohlkert; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : In western countries, approximately 6 to 12 per cent of all pregnancies end preterm, i.e., before 37 weeks of gestation. After the introduction of antenatal corticosteroids, surfactant therapy and neonatal intensive care, survival rates after preterm birth have increased markedly worldwide. LÄS MER