Sökning: "monica ek"

Visar resultat 1 - 5 av 39 avhandlingar innehållade orden monica ek.

  1. 1. Studies of cytokine mediated regulation of central nervous functions : role of prostaglandins

    Författare :Monica Ek; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :interleukin-1; prostaglandin E2; central nervous system; HPA axis; fever; vagus nerve;

    Sammanfattning : The communication between the immune system and the central nervous system (CNS) results in an array of centrally regulated illness responses, including fever and increased hypothalamus-pituitary-adrenal (HPA) axis activity. The mechanisms by which the immune system signals the brain across the blood-brain barrier have not been completely elucidated, but proinflammatory cytokines, like interleukin-1 (IL-1), are believed to act as important mediators. LÄS MER

  3. 2. Eco-friendly and Catalytic Surface Engineering of Cellulose and Nanocellulose

    Författare :Rana Alimohammadzadeh; Armando Cordova; Dan Bylund; Monica Ek; Mittuniversitetet; []
    Nyckelord :;

    Sammanfattning : The non-stop use of petroleum-based materials such as plastics can generate significant environmental problems, including pollution of the oceans and increased CO2 levels, and cause diseases like cancer due to the starting monomers. Consequently, increased use of sustainable and non-toxic polymers and monomers is required to address these issues. LÄS MER

  4. 3. Structure and Mechanical/Transport properties of Single and Multilayer Polyethylene-based Materials

    Författare :Nazanin Alipour; Ulf Gedde; Mats Johansson; Monica Ek; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Deltamethrin; piperonyl butoxide; polyethylene; migration; multilayer film; EVOH; n-hexane; crystallization; mechanical properties; X-ray scattering; swelling;

    Sammanfattning : The current study discusses the structure, mechanical and transport properties of polyethylene-based materials into two parts. The first part deals with the migration and chemical depletion of active substance such as insecticides from moulded polyethylene sheets. LÄS MER

  5. 4. Extended Mercerization Prior to Carboxymethyl Cellulose Preparation

    Författare :Heléne Almlöf; Ulf Germgård; Björn Kreutz; Monica Ek; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carboxymethyl cellulose; Mercerization; DS; FT Raman spectroscopy; Filtration ability; Chemical engineering; Kemiteknik; Chemical Engineering; Kemiteknik;

    Sammanfattning : Carboxymethyl cellulose (CMC) is produced commercially in a two-stage process consisting of a mercerization stage, where the pulp is treated with alkali in a water alcohol solution, followed by an etherification stage in which monochloroacetic acid is added to the pulp slurry. In this thesis an extended mercerization stage of a spruce ether pulp was investigated where the parameters studied were the ratio of cellulose I and II, concentration of alkali, temperature and retention time. LÄS MER

  7. 5. Structural properties and micromechanics of PMMA-based electrospun hybrid fibers

    Författare :Richard L. Andersson; Mikael Hedenqvist; Monica Ek; Magnus Bergström; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER