Search for dissertations about: "dispersive interactions"

Showing result 11 - 15 of 35 swedish dissertations containing the words dispersive interactions.

  2. 11. Alfvén Waves and Energy Transformation in Space Plasmas

    Author : Yuri Khotyaintsev; Kalevi Mursula; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; Alfvén waves; particle acceleration; ionosphere; magnetopause; magnetic reconnection; Rymd- och plasmafysik; Space physics; Rymdfysik; Space Physics; rymdfysik;

    Abstract : This thesis is focused on the role of Alfvén waves in the energy transformation and transport in the magnetosphere. Different aspects of Alfvén wave generation, propagation and dissipation are considered. The study involves analysis of experimental data from the Freja, Polar and Cluster spacecraft, as well as theoretical development. READ MORE

  4. 12. A Fundamental Adhesion Model for Asphalt

    Author : Åsa Laurell Lyne; Björn Birgisson; Robert Lytton; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : One of the mechanisms for the deterioration of asphalt is debonding. This is often referred to as stripping. Most losses of adhesion at the bitumen-aggregate interface are attributed to the action of water leading to a reduction in properties such as tensile strength, tensile stiffness and wear resistance. READ MORE

  5. 13. Cellulose–Assisted Dispersion of Carbon Nanotubes : From Colloids to Composites

    Author : Alireza Hajian; Lars Berglund; Milo Shaffer; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocelluloses; Carbon nanotubes; Composites; Colloids; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : It is a challenge to disperse nanoparticles to obtain a nanostructured composite. This thesis aims at providing a new route to fabricate carbon nanotube (CNT) composites and suggests mechanisms for nanocellulose–CNT interactions. This route is based on unmodified CNT dispersed in water with the help of nanocellulose. READ MORE

  6. 14. Spectral Control of Functional Fiber Sources

    Author : Robert Lindberg; Valdas Pasiskevicius; Stefano Taccheo; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Optics and Photonics; Optik och fotonik;

    Abstract : This thesis is based on five projects aimed at spectral control of fiber-based laser architectures. Two of these concern electrically wavelength-tunable laser sources, namely a fiber amplifier system for CO2-monitoring and a novel tunable laser design for flexible pulsed operation. READ MORE

  7. 15. Optical and Raman Spectroscopic Studies on H2O at High Pressure

    Author : Sara Nanna Kristina Sundberg; Peter Lazor; Oleg Kuskov; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; H2O; diamond anvil cell; equations of state; Raman spectroscopy; interferometry; Geovetenskap; Earth sciences; Geovetenskap;

    Abstract : In this thesis, volumetric, optical and vibrational properties of H2O were studied at high pressures by combining techniques of Raman spectroscopy, interferometry and optical imaging. Pressures up to 7 GPa were generated in the diamond anvil cell (DAC), entering the stability fields of liquid water and ices VI, VII and VIII. READ MORE