Search for dissertations about: "FELD"

Found 2 swedish dissertations containing the word FELD.

  2. 1. Lumbar Disc Herniation Surgery - Novel Approaches, Timing and Outcomes

    Author : Joel Beck; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; FELD; Sciatica; Discectomy; Disc Herniation; Full Endoscopic Lumbar Discectomy; PELD; Time-To-Surgery; Pain duration; Percutaneous Endoscopic Lumbar Discetomy;

    Abstract : BACKGROUND Full Endoscopic Lumbar Discectomy (FELD) is a minimal invasive procedure to treat lumbar disc herniation. A description of the clinical introduction in Sweden and a comparison to other surgical methods is a prerequisite before a widespread national introduction. READ MORE

  4. 2. The Chevreton Superenergy Tensor in Einstein-Maxwell Spacetimes

    Author : Ingemar Eriksson; Göran Bergqvist; Paul Todd; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Einstein-Maxwell; graviational energy; superenergy; Bel tensor; Chevreton tensor; conservation laws; Conformal Einstein space; Theory of relativity; gravitation; Relativitetsteori; gravitation;

    Abstract : In this thesis we investigate the superenergy tensor that was introduced by Chevreton in 1964 as an electromagnetic counterpart to the Bel-Robinson tensor for the gravitational feld.We show that in Einstein-Maxwell spacetimes with a source-free electromagnetic feld, the Chevreton superenergy tensor has many interesting properties. READ MORE