Sökning: "Mikael Johansson"

Visar resultat 21 - 25 av 102 avhandlingar innehållade orden Mikael Johansson.

  1. 21. Synthesis of Conjugated Polymers: Photoactive Substances for Photonic Devices

    Författare :Mikael Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; synthesis; microcavity laser devices; electroluminescence; conjugated polymers; light-emitting diodes; photoluminescence; photooxidation; energy transfer;

    Sammanfattning : Synthesis and characterization of conjugated polymers are the subject of this thesis, the goal of which is to synthesize polymers with properties that will make them suitable as the active materials in applications such as light-emitting diodes and microcavity laser devices. The two classes of conjugated polymers studied are poly(p-phenylenevinylenes) (PPVs) and polyfluorenes (PFs). LÄS MER

  3. 22. Synthesis of poly(p-phenylenevinylenes) as photoactive substances for photonic devices

    Författare :Mikael Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 23. The circadian clock in annuals and perennials : coordination of Growth with Environmental Rhythms

    Författare :Mikael Johansson; Maria E. Eriksson; Paul Devlin; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; circadian clock; arabidopsis; populus; Molecular biology; Molekylärbiologi; Plant biotechnology; Växtbioteknik; Plant physiology; Växtfysiologi; molekylärbiologi; Molecular Biology;

    Sammanfattning : Since the first signs of life on planet earth, organisms have had to adapt to the daily changes between light and dark, and high and low temperatures. This has led to the evolution of an endogenous time keeper, known as the circadian clock. LÄS MER

  5. 24. Towards a Framework for Efficient Use of Virtual Reality in Urban Planning and Building Design

    Författare :Mikael Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; building design; computer graphics; 3D-city models; Building Information Model; usability; urban planning; Virtual Reality;

    Sammanfattning : This thesis mainly deals with the question on how Virtual Reality (VR) simulations can become a communication tool that is integrated in the urban planning and building design process. The work has investigated both technical and usability aspects of the VR technology and identified challenges encountered when trying to implement VR as a natural communication platform in urban planning and building design. LÄS MER

  7. 25. Computation of A-infinity algebras in group cohomology

    Författare :Mikael Vejdemo-Johansson; Germany Friedrich-Schiller-Universität Jena; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER