Sökning: "long chain alcohols"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden long chain alcohols.

1. 1. The effects of long chain alcohol blends on engine performance and spray characteristics in CI engines

   Författare :Josefine Preuss; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; spray characteristics; RME; drop-in bränslen; long chain alcohols; CI engine; HVO;

   Sammanfattning : Replacing fossil fuels with alternatives derived from renewable sources is one way of meeting society’s increasing need for mobility while also significantly reducing greenhouse gas emissions from vehicles with internal combustion engines. To facilitate such a replacement, this thesis presents optical spray studies and engine experiments conducted to evaluate the potential of blends of biomass-derived alcohols and vegetable oils to serve as drop-in fuels for compression ignition engines. LÄS MER

3. 2. On the way of making plants smell like moths - a synthetic biology approach

   Författare :Bao-Jian Ding; Funktionell zoologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; moth pheromone; transcriptome; fatty acyl desaturase; fatty acyl reductase; acetyltransferase; chain shortening; chain elongation; heterologous expression; synthetic biology; plant expression;

   Sammanfattning : Moth caterpillars are major agricultural pests in many parts of the world. In general female moths attract male mates with their pheromone over long distance. Most of the described moth pheromones belong to the same class of chemical compounds, fatty acid derivatives that are produced de novo in the pheromone gland. LÄS MER

4. 3. Synthesis of jojoba-like wax esters in metabolically engineered strains of Saccharomyces cerevisiae

   Författare :Leonie Wenning; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Saccharomyces cerevisiae; very long-chain monounsaturated fatty alcohols; very long-chain monounsaturated fatty acids; jojoba-like wax esters;

   Sammanfattning : Yeast has a long-standing tradition in human history as a production organism of choice. Besides being used for the production of fermented products like bread or beer, it has also been extensively explored for the production of proteins and chemicals. LÄS MER

5. 4. Experimental evaluation of renewable drop-in fuel blends for compression ignition engines

   Författare :Josefine Preuss; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Compression Ignition Engine; Renewable fuels; Particle emissions; long-chain alcohol blends;

   Sammanfattning : Driven by the need to reduce greenhouse gas emissions while meeting the growing demand for mobility, the transport sector is shifting towards more sustainable and less polluting energy sources. Although vehicle electrification is advancing, it will take decades for electric vehicles to completely replace all current vehicles powered by internal combustion engines. LÄS MER

7. 5. Free radical mediated cellulose degradation

   Författare :Erik Johansson; KTH; []
   Nyckelord :free radicals; cellulose; polymer; average chain length; bleaching; TCF; ozone; degradation;

   Sammanfattning : This thesis addresses the mechanisms involved in cellulosedegradation in general and Totally Chlorine Free (TCF) bleachingof pulp in particular. The thesis shows that the cellulosedegradation during high consistency ozone bleaching is explainedby free radical chain reactions. LÄS MER