Sökning: "on the effect of variations"

Visar resultat 1 - 5 av 426 avhandlingar innehållade orden on the effect of variations.

  1. 1. On the fracture behaviour of softwood a combined experimental and computational study of the interaction between fracture behaviour and material anatomy

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Lars Olof Jernkvist; Malmö University.; [2000]
    Nyckelord :Hållfasthetslära; Solid Mechanics; TECHNOLOGY; TEKNIKVETENSKAP; Technology;

    Sammanfattning : The propensity for fracture, i.e. failure through separation of the material, is a factor that must be regarded in the design of wooden structures, but also in wood machining operations and drying. LÄS MER

  2. 2. Colour in Enclosed Space Observation of Colour Phenomena and Development of Methods for Identification of Colour Appearance in Rooms

    Detta är en avhandling från Chalmers University of Technology

    Författare :Monica Billger; Chalmers tekniska högskola.; Chalmers University of Technology.; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Arkitektur och bebyggelsevård; Architecture and architectural conservation and restoration; adaptation effects; colour; colour appearance; identity colour; illumination; interiors; full-scale studies; reflections; simultaneous contrast; visual assessments;

    Sammanfattning : The main problems dealt with in this thesis are (1) how colours can appear in rooms due to various colour combinations and lighting conditions, and (2) how we can identify and compare colour appearance in rooms. One aim is to demonstrate and discuss the complex problem of how certain conditions in a room affect colour appearance, and to give examples and describe the co-operation between some of the affecting factors in experimental rooms. LÄS MER

  3. 3. Properties of Activated Sludge Flocs

    Detta är en avhandling från Chalmers University of Technology

    Författare :Britt-Marie Wilén; Chalmers tekniska högskola.; Chalmers University of Technology.; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; Miljöteknik; Environmental engineering; activated sludge; dissolved oxygen concentration; floc size; settling; filamentous microorganisms; deflocculation; reflocculation; shear forces; aerobic microbial activity; floc strength;

    Sammanfattning : The quality of the effluent from activated sludge treatment plants is highly dependent on the efficiency of the solid-liquid separation process. The aim of this thesis was to study (i) the effects of dissolved oxygen (DO) concentration on effluent turbidity and flocculation, as well as on the settling properties of activated sludge, for both short term and long term scales, and (ii) the influence of aerobic microbial activity on the stability of activated sludge flocs. LÄS MER

  4. 4. Durability of District Heating Pipes

    Detta är en avhandling från Chalmers University of Technology

    Författare :Stefan Forsaeus Nilsson; Stefan F. Nilsson; RISE.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; district heat distribution; district heating pipe; buried pipe; long-term strength; polyethylene; polyurethane foam; stone indentation; reuse of excavated material; pipe joint; moisture diffusion;

    Sammanfattning : This thesis is focused on mechanical loads and moisture related problems with a potential to critically harm the functionality of pre-insulated district heating pipes and pipe joints. Directly buried pipeline bends are investigated with respect to limiting deformations from a thermally induced lateral displacement. LÄS MER

  5. 5. Influence Of Road Feature Variables On Accident Rate

    Detta är en avhandling från Chalmers University of Technology

    Författare :Sarbaz Othman; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Övrig samhällsbyggnadsteknik och arkitektur; Other civil engineering and architecture; Övrig teknisk mekanik; Other engineering mechanics; Traffic safety; accident rate; black spots; safe road geometry; accident causation;

    Sammanfattning : The main objective of this traffic safety investigation was to find critical road parameters affecting accident rate (AR). The secondary objective was to analyze any identified risk factors from a vehicle dynamics perspective. LÄS MER