Sökning: "DISC"

Visar resultat 41 - 45 av 358 avhandlingar innehållade ordet DISC.

1. 41. Reduction of refining energy during mechanical pulping : using pressurised chip compression and sulphite pre-treatment

   Författare :Erik Nelsson; Geoffrey Daniel; Mittuniversitetet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Chip pre-treatment; double disc refiner; energy efficiency; Impressafiner; low dosage; Norway spruce; refining intensity; single disc refiner; sulphite pre-treatment; thermomechanical pulp;

   Sammanfattning : The effects of pressurised compressive chip pre-treatment and low dosage sulphite pre-treatment were evaluated for production of thermomechanical pulp in mill scale trials using Norway spruce (Picea abies) at the Braviken paper mill (Holmen Paper AB, Sweden). The general aim of the study was to improve the energy efficiency during the production of mechanical pulps suitable for news and improved news grade papers. LÄS MER

3. 42. Simulation of Thermal Stresses in a Brake Disc

   Författare :Asim Rashid; Niclas Strömberg; Tore Vernersson; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : In this thesis thermal stresses in a brake disc during a braking operation are simulated. The simulations are performed by using a sequential approach where the temperature history generated during a frictional heat analysis is used as an input for the stress analysis. LÄS MER

4. 43. Long-term outcome of lumbar disc herniation surgery. Studies on different influencing factors

   Författare :Katarina Silverplats; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Lumbar disc herniation surgery; clinical outcome; long-term follow-up; scar formation; expectation; satisfaction; predictive factors; health related quality of life HRQoL ;

   Sammanfattning : Background: A majority of patients suffering from sciatica caused by lumbar disc herniation experience a positive natural history and respond well to non-surgical treatment. Patients who fail conservative treatment and are treated surgically have been reported to get satisfactory result in about 70-90% in short-term (1-2 year) follow-up. LÄS MER

5. 44. Intervertebral disc regeneration. Studies on stem cell niches and cell transplantation

   Författare :Helena Barreto Henriksson; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; intervertebral disc stem cells degenerative disc cell transplantation stem cell niches disc degeneration mesenchymal stem cells cell therapy;

   Sammanfattning : Abstract Intervertebral disc regeneration Studies on stem cell niches and cell transplantation Helena Barreto Henriksson Gothenburg 2010 Low back pain is a common condition in the Western world and disc degeneration (DD) is considered a major cause. DD is characterized by dysfunctional cells and decreased matrix production. LÄS MER

7. 45. The nature of kinematic structures in the Galactic disc

   Författare :Iryna Kushniruk; Astronomi - Genomgår omorganisation; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Galaxy : evolution; Galaxy: structure; Galaxy : kinematics and dynamics;

   Sammanfattning : The velocity distribution of stars in the Galactic disc is complex and consists of a vast number of kinematic structures, that is, stars that share similar velocity components. The reasons why some stars move together may be different and are related to dynamical processes connected to the Galaxy, both internal as well as external ones, such as resonances with the Galactic bar or the Galactic spiral arm structure, dissolution of open clusters, or merger events with other galaxies. LÄS MER