Sökning: "Introduktion"

Visar resultat 16 - 20 av 171 avhandlingar innehållade ordet Introduktion.

1. 16. Aspects on the Regio and Stereo Selectivity in the Hydrolsilylation of 1,3-Dienes

   Författare :Magnus Gustafsson; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Metallorganisk kemi; Organometallic chemistry; Organisk kemi; Organic chemistry; Lewis acid; electrophilic ring closure; asymmetric hydrosilylation; reaction conditions; isoprene; regioselectivity; oxygen; Wilkinsons catalyst; 15N-1H-HMQC; 31P; heterobidentate ligands; catalyst; palladium; epoxy-allylsilanes; rhodium complexes; dienes;

   Sammanfattning : This thesis is a summary of four papers concerning various aspects on the transition metal catalysed hydrosilylation of 1,3-dienes. The hydrosilylation reaction is formally an addition of a hydrosilane to an unsaturated system and depending on the reaction conditions, control of stereo-, regio-, and chemo-selectivity can be achieved. LÄS MER

3. 17. Development of AI-tools for making sense of future complex intelligent systems

   Författare :Elinor Särner; Anna Yström; Nicolette Lakemond; Susanne Ollila; Mats Engwall; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : Artificial intelligence (AI) is increasingly introduced into many systems that modern society rely on and is often portrayed as a savior that can contribute to finding solutions to societal challenges e.g., social, and ecological sustainability. LÄS MER

4. 18. Sociotechnical system studies of the reduction of greenhouse gas emissions from energy and transport systems

   Författare :Linda Olsson; Mats Söderström; Annelie Carlson; Magdalena Fallde; Elisabeth Wetterlund; Kes McCormick; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy systems; transport systems; greenhouse gas emissions; energy policy; transport policy; sociotechnical systems analysis; wicked problem; Energisystem; transportsystem; växthusgasutsläpp; energipolicy; transportpolicy; socioteknisk systemanalys; wicked problem;

   Sammanfattning : It is agreed that greenhouse gas (GHG) emissions from energy and transport systems must be reduced. Technical means exist to reduce GHG emissions from these sources. However, these emission-reduction measures are not implemented to a high enough degree. LÄS MER

5. 19. Constitutive modelling of an additively manufactured alloy for fatigue lifing in high temperature applications

   Författare :Thomas Lindström; Daniel Leidermark; Håkan Hallberg; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : The main objective of the work presented in this Licentiate thesis is to investigate and model the cyclic behaviour of an additively manufactured ductile nickel-based superalloy, with special emphasis on modelling the stabilised material behaviour, which is of interest for fatigue life predictions. Cyclic fatigue tests at different temperatures have been performed to investigate the cyclic mechanical behaviour of the material, where specimens built in different orientations have been used to also study the anisotropic behaviour of the material. LÄS MER

7. 20. Entanglement spectrum and the bulk polarization

   Författare :Carlos Ortega-Taberner; Maria Hermanns; Jens Bardarson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; teoretisk fysik; Theoretical Physics;

   Sammanfattning : In this Licentiate thesis we give a brief review on the topics of topologicalinsulator and superconductor phases, the modern theory of polarization andthe entanglement spectrum, with a focus on one- and two-dimensional systems.In the context of symmetry protected topological systems the bulk polarizationcan be a topological invariant which characterizes the topological phase. LÄS MER