Sökning: "oil resistant"

Visar resultat 16 - 20 av 26 avhandlingar innehållade orden oil resistant.

  1. 16. Bioplastics from Biomass - Acetylation of Xylans with Green Chemistry

    Författare :Agnes Stépán; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : There is social, environmental and increasing economic pressure on the industrial sector to substitute non-renewable resources with renewable ones as the increasing World population is exponentially depleting the fossil fuel supplies of the Earth. Each year about 260 million tons of plastics are produced from crude oil and most of it ends up as waste. LÄS MER

  3. 17. Inactivation of pulmonary surfactant and its prevention

    Författare :Guido Stichtenoth; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Pulmonary surfactant is a lipoprotein complex coating the conducting airways down to the terminal airspaces. Its main function is to lower surface tension at the air liquid interface thus preventing alveolar collapse at end expiration. LÄS MER

  4. 18. Genetic and immunological studies of experimental arthritis, with emphasis on a novel C-type lectin receptor gene complex

    Författare :Jian Ping Guo; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Rheumatoid Arthritis (RA) is a chronic, systemic autoimmune syndrome primarily affecting peripheral joints. The etiology of RA is largely unknown but complex interactions between genetic and environmental factors contribute to the disease. Arthritis models more or less resembling RA are used to search for clues. LÄS MER

  5. 19. Industrial Application of Sulfur Concrete An Environment-friendly Construction Material

    Författare :Amon Raphael Makenya; KTH; []
    Nyckelord :Sulfur binder; Chempruf modifyer; Sulfur Concrete SC ; Durability; SC market survey; SC Applications; Environment.;

    Sammanfattning : Sulfur Concrete (SC) is a thermoplastic constructionmaterial, of mineral aggregates and modified sulfur as binder.Elemental sulfur has now a low smelting point (120oC) and appears in two solid allotropic forms,separated by considerable contraction. Hence, the need formodification to delay the transition. LÄS MER

  7. 20. On the Formation of Low-Friction Tribofilms in Me-DLC – Steel Sliding Contacts

    Författare :Nils Stavlid; Urban Wiklund; Sture Hogmark; Erik Johansson; Uppsala universitet; []
    Nyckelord :Materials science; tribofilms; tribochemistry; boundary-lubrication; ESCA; Materialvetenskap;

    Sammanfattning : The present thesis thoroughly treats a special friction reduction phenomenon that may appear in boundary lubricated tribological contacts, of the type encountered in numerous mechanical components made of steel. The phenomenon involves the formation of a special type of tribofilm that offers very low coefficients of friction. LÄS MER