Sökning: "alkane"

Visar resultat 1 - 5 av 28 avhandlingar innehållade ordet alkane.

1. 1. NOx reduction with dimethyl ether in lean exhaust

   Författare :Sara U Erkfeldt; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NOx storage; Dimethyl ether; ether; hydrocarbon-SCR; lean NOx reduction; alcohol; Cu-ZSM-5; lean NOx trap; alkane; alternative fuel;

   Sammanfattning : There is a growing concern worldwide about the increase in anthropogenic greenhouse gas emissions, particularly carbon dioxide (CO2) from the combustion of fossil fuels. Vehicles with internal combustion engines contribute significantly to these emissions, which has led to an increased demand for engines running on alternative (non-fossil) fuels. LÄS MER

3. 2. Unsaturated Fatty Acids in Alkane Solution : Adsorption and Tribological Properties

   Författare :Sarah M. Lundgren; Per M. Claesson; Hugh Spikes; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi;

   Sammanfattning : Fatty acids and blends of fatty acids are used as friction modifiers and anti-wear additives in diesel fuels. A large part of some fatty acid blends are unsaturated fatty acids. Even though fatty acids have been thoroughly investigated, the adsorption and tribological behaviour of unsaturated fatty acids are no fully understood. LÄS MER

4. 3. Alkane activation by superacids and enantioselective reactions with chiral lithium amides : computational and experimental mechanistic studies

   Författare :Peter Dinér; Per Ahlberg; Einar Uggerud; University of Gothenburg Department of Chemistry; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

5. 4. Alkane activation by superacids and enantioselective reactions with chiral lithium amides – computational and experimental mechanistic studies

   Författare :Peter Dinér; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

7. 5. Synthesis of a key derivative of glycosylphosphatidylinositol substances and synthesis of spacer glycosides for use in the formation of glycoconjugates and of self-assembled monolayer surfaces

   Författare :Liselotte Öhberg; Thomas Norberg; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic Chemistry; organisk kemi;

   Sammanfattning : The first chapter of this thesis describes glycosylation strategies for obtaining derivatives of 2-amino-2-deoxy-a-D-glucopyranosyl-(1-->6)-D-myo-inositol, a key building block for synthesis of glycosylphosphatidylinositol anchor substances and also proposed to be part of a second messenger for insulin.The second chapter describes the synthesis of bifunctional oligoethylene glycol spacers and glycosylation of these for use in formation of glycoconjugates. LÄS MER