Sökning: "ponten"

Visar resultat 1 - 5 av 40 avhandlingar innehållade ordet ponten.

  1. 1. Biological activities of novel platelet-derived growth factors, PDGF-C and PDGF-D

    Författare :Annica Pontén; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Platelet-derived growth factors (PDGFs) belong to the PDGF/VEGF (vascular endothelial growth factor) family of growth factors. Members of this family share a common structural feature, a conserved PDGF/VEGF homology domain, containing eight invariant cysteine residues. LÄS MER

  3. 2. Contact Allergy to Epoxy Resins of the Bisphenol F-type

    Författare :Ann Pontén; Yrkes- och miljödermatologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; thin-layer chromatography; occupational dermatitis; isomers; bisphenol F; bisphenol A; DGEBF; DGEBA; epoxy resin of the bisphenol F-type; Epoxy resin; contact allergy; Dermatology; venereology; Dermatologi; venereologi; Occupational health; industrial medicine; Yrkesmedicin; arbetsmiljömedicin;

    Sammanfattning : Epoxy resins based on bisphenol A are well-known contact allergens and often cause occupational contact allergy. The most important allergen is the monomer diglycidyl ether of bisphenol A (DGEBA). LÄS MER

  4. 3. To Show: apropos of Marcel Duchamp’s Étant donnés: 1° La chute d’eau, 2° Le gaz d’éclairage

    Författare :Ann Pontén; Yrkes- och miljödermatologi; []
    Nyckelord :;

    Sammanfattning : Aims: To study aspects of Marcel Duchamp’s posthumous permanent installation 'Étant donnés: 1° La chute d’eau, 2° Le gaz d’éclairage…' ('Given: 1. The Waterfall, 2. The Illuminating Gas.. LÄS MER

  5. 4. Growth characteristics and p53 alterations in human basal cell cancer : between bewildering basics & BCC biology

    Författare :Fredrik Pontén; Uppsala universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : .... LÄS MER

  7. 5. Synthesis and Rearrangement of Epoxy Sugars

    Författare :Fritiof Pontén; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic chemistry; crown ether; silica; Intramoleculaf Diels-Alder reaction; radical allylation; allyl sulfone; sugar epoxide; allyl sulfide; ring-contraction; C-glycoside; a; IMDAF; b-unsaturated aldehyde;

    Sammanfattning : Ring-Contraction of sugar-derived epoxy alcohols, functionalised in position 1 and 6, by treatment with lithium bromide and N, N, N', N'-tetramethylurea in refluxing toluene gave enantiomerically pure a,b-unsaturated aldehydes of furanosides. O-Glycosidic epoxy alcohols gave only one, easily purified, aldehyde in approximately 30-60% yield depending on the substitution pattern. LÄS MER