Sökning: "Natural oils"

Visar resultat 21 - 25 av 81 avhandlingar innehållade orden Natural oils.

  1. 21. Metabolic engineering of Crambe abyssinica for producing high erucic acid oil

    Författare :Rui Guan; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Vegetable oils are renewable and more environmentally friendly than fossil oils, and thus are good alternatives to fossil oils for industrial applications. Erucic acid (C22:1Δ13) is a valuable feedstock in the chemical industry. The current plant sources for erucic acid production are high erucic acid rapeseed (HEAR) and mustard. LÄS MER

  3. 22. Scanning electron microscopy (SEM) analysis of tribofilms enhanced by fullerene-like nanoparticles

    Författare :István Zoltán Jenei; Stefan Csillag; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The beneficiary effects of WS2 inorganic fullerene-like nanoparticles in the lubrication industry were shown in recent years. The incorporation of the nanoparticles into lubricants (oils, greases) is however not straightforward. LÄS MER

  4. 23. Effect of Wood Constituents Oxidation of Unsaturated Fatty Acids

    Författare :Alireza Salehi Movahed; Mats K.G. Johansson; Mats Johnssson; Karin Jacobsson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wood constituents; oil; oxidation; unstatured fatty acids; lignin; model lignin compounds; Polymer chemistry; Polymerkemi;

    Sammanfattning : This work presents the mechanisms of free radicals in a model system between fatty acids oxidation process and wood components. The aim is to create a better understanding of new environmentally friendly materials for exterior wood protection. LÄS MER

  5. 24. Enhancing UV protection of clear coated exterior wood by reactive UV absorber and epoxy functional vegetable oil

    Författare :Sara Olsson; Mats Johansson; Gilles Sèbe; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Since ancient times wood has played a large role in human activities, both in terms of fuel and for construction purposes. A drawback with wood in exterior applications is, however, its susceptibility to photo-initiated degradation, caused by radiation from the sun. LÄS MER

  7. 25. Formation of Skin Sensitizers from Fragrance Terpenes via Oxidative Activation Routes. Chemical analysis, Structure Elucidation and Experimental Sensitization Studies

    Författare :Lina Hagvall; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The work presented in this thesis emphasizes the importance of considering oxidative activation in the toxicity assessment of fragrance chemicals. Compounds without contact allergenic properties can be activated either via autoxidation in contact with air or via cutaneous metabolism to reactive products which can cause contact allergy. LÄS MER