Search for dissertations about: "Diameter"

Showing result 16 - 20 of 933 swedish dissertations containing the word Diameter.

  2. 16. Efficiency of accumulating felling heads and harvesting heads in mechanized thinning of small diameter trees

    Author : Helmer Belbo; Rolf Björkheden; Jan Erik Liss; Jean-Francois Gingras; Kanada FPinnovations; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Forestry and Wood Technology; Skog och träteknik;

    Abstract : .... READ MORE

  4. 17. Small Orifices - Diesel Combustion and Spray Investigations

    Author : Pär Bergstrand; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; multirow nozzles; small orifice diameter; diesel combustion; spray;

    Abstract : Future demands on diesel engines, such as the need to meet stricter emission legislation, improve performance and lower fuel consumption, for lowering transportation cost and carbon dioxide emissions, forces the development of engines to take a major step in the near time. During the years of engine development, all components have been optimised in small steps at a time, but larger steps must now be taken to meet requirements of the future. READ MORE

  5. 18. Experiments with sand slurries pumped in 0.1 to 0.5 m diameter pipeline loops

    Author : Lee Whitlock; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

    Abstract : The overall objective was to investigate the effectiveness of using high solids concentrations when transporting sand slurries in pipelines with centrifugal pumps. In detail, the aims are to present large-scale experimental pipe friction loss results and how head, efficiency and net suction head performance are influenced by the solid particles in large pumps and to compare friction loss data with a design model. READ MORE

  6. 19. Ultrasonic Methods for 2D Arterial Wall Movement Measurements

    Author : Magnus Cinthio; Avdelningen för Biomedicinsk teknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tissue Doppler imaging; Cardiovascular system; Diagnostik; Diagnostics; Kardiovaskulära systemet; arteries; ultrasound; shear stress; axial movement; radial movement; Arterial distension; Arterial lumen diameter; PWV; Arterial longitudinal movement; pulse-wave velocity;

    Abstract : Cardiovascular diseases constitute the major cause of morbidity and mortality in the Western World. To increase our knowledge of cardiovascular diseases, it is important to find methods, preferably non-invasive ones, to study very early manifestations of vascular disease. READ MORE

  7. 20. Bowel Habits and Functional Constipation - A Longitudinal Birth Cohort Study of Children Born in Gothenburg

    Author : Cathrine Gatzinsky; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bowel habits; functional gastrointestinal disorder; infant colic; infant dyschezia; functional constipation; high resolution anorectal manometry; trans abdominal ultrasound; transverse rectal diameter;

    Abstract : Background: Parents often visit health facilities with concerns regarding their child’s bowel function. Data on bowel habits from healthy children is important in establishing what is normal and what is not. READ MORE