Sökning: "Sven Larsson"

Visar resultat 16 - 20 av 27 avhandlingar innehållade orden Sven Larsson.

  1. 16. Ground Improvement by Dry Deep Mixing Lime-Cement Column Panels as Excavation Support

    Författare :Razvan Ignat; Stefan Larsson; Sadek Baker; Sven Liedberg; Masaki Kitazume; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Many urban areas near the coastal regions of Sweden are characterized by post-glacial clay deposits with very low undrained shear strength and high compressibility. Column type ground improvement by the Deep Mixing, DM, method using a binder mixture of lime and cement is commonly used in areas with poor soil conditions due to its cost-effectiveness, predominantly for settlement reduction and to improve the stability of embankments. LÄS MER

  3. 17. Quantum Chemical Calculations on ESR, Core Excitations, and Isotope Effects in Molecular Systems

    Författare :Magnus Jansson; Sten Lunell; Nessima Salhi-Benachenhou; Sven Larsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum chemistry; Kvantkemi; Quantum chemistry; Kvantkemi;

    Sammanfattning : In this thesis, quantum chemical calculations are undertaken mostly in order to interpret experimental results, but also to learn about computational techniques, their performance and their limitations. In paper I, the ionization-cleavage process of alkenes is investigated and two pathways are followed, one of initial cleavage and subsequent ionization and on the opposite, the other one of initial ionization and subsequent cleavage. LÄS MER

  4. 18. Theoretical Routes for c-BN Thin Film Growth

    Författare :Johan Karlsson; Karin Larsson; Sven Ulrich; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cubic boron nitride; chemical vapor deposition; density functional theory; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : Cubic boron nitride (c-BN) has been in focus for several years due to its interesting properties. The possibility for large area chemical vapor deposition (CVD) is a requirement for the realization of these different properties in various applications. Unfortunately, there are at present severe problems in the CVD growth of c-BN. LÄS MER

  5. 19. Theoretical Routes for c-BN Thin Film Growth

    Författare :Johan Karlsson; Karin Larsson; Sven Ulrich; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cubic boron nitride; chemical vapor deposition; density functional theory; adsorption; abstraction; Inorganic Chemistry; Oorganisk kemi;

    Sammanfattning : c-BN has been in focus for several years due to its interesting properties. The possibility for large area CVD is a requirement for the realization of these different properties in various applications. Unfortunately, there are at present severe problems in the CVD growth of c-BN. LÄS MER

  7. 20. Characterization of Surfaces Designed for Biomedical Applications

    Författare :Emma Kristensen; Hans Siegbahn; Rolf Larsson; Sven Oscarsson; Uppsala universitet; []
    Nyckelord :Physics; heparin; photoelectron spectroscopy; phosphorylcholine; biomaterial; quartz crystal dissipation; Fysik; fysik; Physics;

    Sammanfattning : In order to develop blood biocompatible materials a heparin surface and a phosphorylcholine (PC) functionalized polymer surface were characterized using photoelectron spectroscopy (PES). The formation of the heparin surface was studied by quartz crystal microbalance with dissipation monitoring (QCM-D). LÄS MER