Sökning: "Adhesion"

Visar resultat 11 - 15 av 951 avhandlingar innehållade ordet Adhesion.

  1. 11. Adhesion to machined and laser ablated wood surfaces

    Detta är en avhandling från Institutionen för produktionssystem

    Författare :Micael Stehr; KTH.; [1999]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; ablation; adhesion; checks; coating; cracks; excimer laser; gluing; IR laser; mechanical machining; mechanical weak boundary layer; microscopy; notched specimens; pine; planing; sample preparation; sawing; scanning electronmicroscopy; spruce; tip-cracks; UV laser; weak boundary layer; wood;

    Sammanfattning : This thesis is a contribution to the R&D-program ValueActivation at KTH,Division of Wood Technology and Processingand containsfive papers related to the evaluation and development ofmachining techniques (mechanical and irradiation treatments)whereby weak boundaries at the wood surfaces in the form of(mechanical) weak boundary layers and (micro) cracks due tomechanical treatment can be avoided.The first paper describes the development of a method–using a UV laser–to study the mechanically weakenedboundaries. LÄS MER

  2. 12. Adhesion in the wheel-rail contact under contaminated conditions

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Yi Zhu; KTH.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adhesion; wheel-rail contact; contaminants; rough surfaces;

    Sammanfattning : Railway vehicles require a certain level of adhesion between wheel and rail to operate efficiently, reliably, and economically. Different levels of adhesion are needed depending on the vehicle running conditions. LÄS MER

  3. 13. Adhesion-related interactions of Actinomyces and Streptococcus biofilm bacteria

    Detta är en avhandling från Umeå : Odontologi

    Författare :Mirva Drobni; Umeå universitet.; [2006]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biofilm; Actinomyces; Streptococcus; adhesion; ODONTOLOGY Cariology; ODONTOLOGI Cariologi;

    Sammanfattning : Adhesion of bacteria is a key event in biofilm formation and is mediated by bacterial adhesins recognising host or bacterial partner receptors. In oral biofilm formation, primary Actinomyces and Streptococcus colonizers adhere to salivary pellicle proteins such as proline-rich proteins (PRPs) as well as to mucosal surfaces. LÄS MER

  4. 14. Thrombospondin 1, an autocrine regulator in T cell adhesion and migration

    Detta är en avhandling från Umeå : Klinisk mikrobiologi

    Författare :ShuShun Li; Umeå universitet.; [2005]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Immunology; T cell; adhesion; migration; thrombospondin; Immunologi; MEDICINE Microbiology; immunology; infectious diseases Immunology; MEDICIN Mikrobiologi; immunologi; infektionssjukdomar Immunologi; immunologi; Immunology;

    Sammanfattning : Lymphocytes, the principal cells of the immune system, perform the immune function throughout the body by their unique capacity to circulate in blood stream and lymphatic vessels and migrate in lymphoid and non-lymphoid tissues. The mechanisms regulating lymphocyte adhesion and migration, interactions with cells and components within the extracellular matrix are not fully understood. LÄS MER

  5. 15. Lactoferrin Interactions with Periodontitis-associated Bacteria - Aspects of Adhesion-counteracting Mechanisms

    Detta är en avhandling från Umeå : Klinisk mikrobiologi

    Författare :Kishore R. Alugupalli; [1996]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Inhibition; Adhesion; Binding; lactoferrin; Prevotella nigrescens; Actinobacillus actinomycetemcomitans; Prevotella intermedia; Periodontal disease; Protease; Laminin; Odontology; stomatology; Odontologi;

    Sammanfattning : Actinobacillus actinomycetemcomitans, Prevotella intermedia and Prevotella nigrescens are associated with periodontal diseases. Adhesion of these bacteria to host tissue surfaces is a prerequisite for their establishment. The surfaces in the oral cavity are bathed by secretions which emanate from salivary glands and from gingival crevicular area. LÄS MER