Sökning: "Hydrocarbons"

Visar resultat 16 - 20 av 381 avhandlingar innehållade ordet Hydrocarbons.

  1. 16. Analys och förekomst av lättare kolväten, främst bensen, i arbets- och omgivningsmiljö

    Författare :Rolf Nordlinder; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; personal exposure; vapour recovery; gas chromatograophy; hydrocarbons; work places; petrol; benzene; alkenes;

    Sammanfattning : .... LÄS MER

  3. 17. The palaeolimnological record of regime shifts in lakes in response to climate change

    Författare :Linda Randsalu Wendrup; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; palaeolimnology; regime shifts; thresholds; alternative stable states; climate change; ecosystem dynamics; diatoms; hydrocarbons; monitoring; lake sediments; shallow lakes; 8.2 ka event;

    Sammanfattning : Regime shifts in lake ecosystems can occur in response to both abrupt and continuous climate change, and the imprints they leave in palaeolimnological records allow us to investigate and better understand patterns and processes governing ecological changes on geological time scales. This thesis aims at investigating palaeolimnological records of regime shifts in lakes during the Holocene to explore how lake ecosystems responded to climate changes and anthropogenic activities and to identify thresholds or tipping points that produced regime shifts. LÄS MER

  4. 18. Chlorinated hydrocarbons injected into avian eggs : toxicity and influence on the embryonic metabolism

    Författare :Björn Brunström; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 19. Protein unfolding by interfaces and interactions between polycyclic aromatic hydrocarbons

    Författare :Svetla Chakarova Käck; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; first-principles calculations; PAH; denaturation; protein-interface interactions; van der Waals interactions; lattice models; polycyclic aromatic hydrocarbons; DFT; density functional theory;

    Sammanfattning : In order to theoretically study large and complex systems, a variety of approaches that can be categorized loosely as top-down or bottom-up are followed. While our vision is to bridge the gap between these approaches and use them together in multiscale materials modeling, the present thesis is limited to give examples of each type of approach in the study of soft-matter systems. LÄS MER

  7. 20. Determination of Volatile Hydrocarbons in Air

    Författare :Lars Löfgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER