Sökning: "toxicity"

Visar resultat 51 - 55 av 965 avhandlingar innehållade ordet toxicity.

  1. 51. Foam Core Materials for High Performance Sandwich Constructions: Preparation, Testing and Properties

    Författare :Mikael Danielsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; IPN; core material; low temperature; polyurea; polyethersulfone; gradient structure; foam; PVC; sandwich; waste; fire; smoke; toxicity; mechanical properties; Inter Penetrating Polymer Network; dynamic properties; high temperature;

    Sammanfattning : The basic task for foams used as core materials in sandwich constructions is to separate the skin layers in order to enhance stiffness with little contribution to the total weight. However, modern design in sandwich technology require that core materials contribute to the perfor-mance with specific mechanical and physical properties. LÄS MER

  3. 52. Dendrimer-mediated gene delivery: Effect of polymer structure on cellular response

    Författare :Kristina Fant; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gene therapy; DNA condensation; cationic polymers; toxicity; non-viral vector; drug delivery; polyplex; PAMAM dendrimers;

    Sammanfattning : The delivery of nucleic acids to cells, in vitro and in vivo, is becoming a realistic approach for intervention with gene expression at a molecular level. It can be used to repair malfunctioning genes or to introduce new functionalities, with the most important application being clinical treatment of human diseases. LÄS MER

  4. 53. Metal accumulation by plants : evaluation of the use of plants in stormwater treatment

    Författare :Åsa Fritioff; Maria Greger; Lena Kautsky; Bert Wolterbeek; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Elodea canadensis; Potamogeton natans; uptake; translocation; distribution; toxicity; salinity; temperature; and leakage; Plant physiology; Växtfysiologi;

    Sammanfattning : Metal contaminated stormwater, i.e. surface runoff in urban areas, can be treated in percolation systems, ponds, or wetlands to prevent the release of metals into receiving waters. Plants in such systems can, for example, attenuate water flow, bind sediment, and directly accumulate metals. LÄS MER

  5. 54. Application and interpretation of biomarkers in ecotoxicology - from molecular to individual level responses

    Författare :Sara Furuhagen; Elena Gorokhova; Carlos Barata; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biomarkers; oxidative stress; ORAC; reproduction; Daphnia magna; toxicity; environmental stress; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : The use of biomarkers is considered a promising alternative, or complement, to traditional ecotoxicological assays. Toxic effects are often initially manifested at the molecular or biochemical level, biomarkers are therefore used as sensitive indicators of toxic exposure. LÄS MER

  7. 55. Development of a toxicity test for denitrification, using comamonas denitrificans

    Författare :Lena Gumaelius; KTH; []
    Nyckelord :denitrification; toxicity test; comamonas denitrificans; anoxic bioremediation; nitite reductase; biosensor; characterisation;

    Sammanfattning : .... LÄS MER