Sökning: "Johan Andersson"

Visar resultat 11 - 15 av 96 avhandlingar innehållade orden Johan Andersson.

1. 11. Life of Excitons in Artificial Photosynthetic Antennas

   Författare :Johan Andersson; Kemisk fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Zn-porphyrin; Osmium; Ruthenium; Polypyridine; Inter Ligand Energy Transfer; Inter System Crossing; Excited state dynamics; Transition metal complexes; Photosynthetic Antennas; Solar energy conversion; Artificial photosynthesis; Physical chemistry; Fysikalisk kemi; Transient Absorption Anisotropy.; Reaction Center; Dendrimer; Energy Transfer;

   Sammanfattning : Due to the predicted energy crisis when fossil fuels will be exhausted it is important to search for alternative energy sources. Utilizing sunlight via artificial photosynthesis is an interesting possibility. LÄS MER

3. 12. Modeling the temporal behavior of complex embedded systems : a reverse engineering approach

   Författare :Johan Andersson; Mälardalens högskola; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

4. 13. Influence of Ageing on Material Properties at Interfaces in Composite Insulators

   Författare :Johan Andersson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; composite insulators; ageing; silicone rubber; salt fog test; Outdoor insulation; inclined plane test; interfaces;

   Sammanfattning : High quality of internal interfaces in composite insulators for high voltage applications is necessary for securing durability of their functionality. Weak macroscopic interfaces between the glass fibre reinforced (FRP) epoxy core and the silicone rubber (SIR) housing, such as spots with reduced bonding or a loss of the adhesion as well as presence of foreign contaminants, can appear to have an accelerating effect on the evolution of ageing processes, though it may take years before the first signs of processes endangering the insulator function appear. LÄS MER

5. 14. Odour Communication in Pieris Butterflies

   Författare :Johan Andersson; KTH; []
   Nyckelord :Pieris; sexual selection; pheromones; methyl salicylate; indole; benzyl cyanide; solid-phase micro extraction;

   Sammanfattning : .... LÄS MER

7. 15. Properties and Long-Term Performance of Internal Interfaces in Composite Insulators

   Författare :Johan Andersson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : An important component that secures durability of composite insulators for high voltage applications is the quality of internal interfaces. Weak interfaces, in form of a reduced bonding or a loss of the adhesion between the insulation components, can be devastating for the long-term functionality of an insulator. LÄS MER