Sökning: "DAF"

Visar resultat 1 - 5 av 17 avhandlingar innehållade ordet DAF.

  1. 1. Dissolved Air Flotation and Microscreening for Particle Separation in Wastewater Treatment

    Författare :Michael Cimbritz; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemiteknik och kemisk teknologi; disc filtration; microscreening; DAF; wastewater treatment; particle separation; Chemical technology and engineering; particle size analysis; drum filtration;

    Sammanfattning : Particle separation is one of the fundamental processes in wastewater treatment and a good understanding of the basic separation mechanisms ? sedimentation, flotation and filtration ? is critical in the design of wastewater treatment systems. Upgrading of treatment plants for enhanced primary treatment and effluent polishing are current examples of applications where effective, high-rate separation methods are of interest. LÄS MER

  3. 2. Life and death of human B cells in health and disease

    Författare :Andy Dernstedt; Mattias N. E. Forsell; Clas Ahlm; Jonas Klingström; Mats Bemark; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; b cells; antibody; hantavirus; germinal centre; phagocytosis; selection; DAF; vaccination; rituximab;

    Sammanfattning : B cells provide one of the key mechanisms of immunological memory, which is theproduction of neutralising antibodies. How B cells respond to infections and vaccinationgives clues to how the development of the immunological memory is facilitated, and canthus lead to a deeper understanding of why the immune system sometimesmalfunctions. LÄS MER

  4. 3. Dissolved Air Flotation

    Författare :Mia Bondelind; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; two- and three-dimensional; Dissolved Air Flotation DAF ; aggregation model; Computational Fluid Dynamics CFD ; field study; surface forces; turbulence; single and multiphase flow;

    Sammanfattning : Dissolved Air Flotation (DAF) is a well-established treatment method for water containing low density particles. The density-driven process is operated by the injection of water saturated with air under high pressure. At the pressure reduction microscopic air bubbles are formed. LÄS MER

  5. 4. Numerical Modelling of Dissolved Air Flotation

    Författare :Mia Bondelind; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computational Fluid Dynamics CFD ; 2D; multiphase flow; one-phase; 3D; turbulence; Dissolved Air Flotation DAF ;

    Sammanfattning : Dissolved Air Flotation (DAF), a well-established treatment method for water containing e.g. dissolved organic matter and Cryptosporidium, has previously been examined experimentally. However, most measuring techniques still suffer from disturbances from air bubbles and intrusion of the measuring equipment into the flow. LÄS MER

  7. 5. Discovering and targeting the mechanisms that govern age-related decline

    Författare :Xin-Xuan Lin; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Aging is recognized as a major risk factor for many diseases. Thus, the identification of a means to target aging would bear great potential to improve human health and quality of life. LÄS MER