Sökning: "homogeneous structure"

Visar resultat 6 - 10 av 213 avhandlingar innehållade orden homogeneous structure.

  1. 6. Rare-gas Clusters Studied by Electron Spectroscopy : Structure of Heterogeneous Clusters and Effects of Electron Scattering on Auger Decay

    Författare :Marcus Lundwall; Olle Björneholm; Gunnar Öhrwall; Maxim Tchaplyguine; Thomas Möller; Uppsala universitet; []
    Nyckelord :Physics; Nano-particles; Clusters; Heterogeneous clusters; Core-shell clusters; XPS; UPS; AES; Electron scattering; Radial structure; Surface structure; Surface sensitivity; Synchrotron radiation; Ne; Ar; Kr; Xe; Fysik;

    Sammanfattning : In this Thesis experimental studies of nano-clusters using synchrotron radiation based photoelectron (UPS and XPS) and Auger Electron Spectroscopy (AES) are presented. The investigations may be divided into two parts where the first reports on the structure of heterogeneous two component clusters, and the second concerns electronic decay processes. LÄS MER

  3. 7. Computer Simulations of Polymer Gels : Structure, Dynamics, and Deformation

    Författare :Natasha Kamerlin; Christer Elvingson; Jan Forsman; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; computer simulations; Brownian dynamics; polymer gel; microgel; spherical boundary conditions; hypersphere; core-shell; deswelling; mechanical properties; uniaxial elongation;

    Sammanfattning : This thesis presents the results of computer simulation studies of the structure, dynamics, and deformation of cross-linked polymer gels. Obtaining a fundamental understanding of the interrelation between the detailed structure and the properties of polymer gels is a challenge and a key issue towards designing materials for specific purposes. LÄS MER

  4. 8. Market structure and market power : the case of the Swedish forest sector

    Författare :Mats Bergman; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : The Swedish forest sector is analyzed, using methods drawing on traditional (forest) market analysis and industrial organization literature. Models based on economic theory are tested empirically with time-6eries data.Paper [1] deals with how the pulp and paper industry manages wood supply risk. LÄS MER

  5. 9. Control of HCCI by aid of Variable Valve Timings with Specialization in Usage of a Non-Linear Quasi-Static Compensation

    Författare :Fredrik Agrell; Hans-Erik Ångström; Wai K. Cheng; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HCCI; Homogeneous; Charge Compression Ignition; Engine Control; Variable Valve Timings; Other technology; Övriga teknikvetenskaper;

    Sammanfattning : This doctoral thesis is about controlling the combustion timing of the combustion concept Homogeneous Charge Compression Ignition, HCCI, by means of variable valve timings. The HCCI research usually is regarded to have started in Japan during the later part of the 1970´s. The world of HCCI has since grown and HCCI is of today researched worldwide. LÄS MER

  7. 10. Ceria Nanoparticle Hybrid Materials : Interfacial Design and Structure Control

    Författare :Eric Johansson Salazar-Sandoval; Mats Johansson; Wolfgang Bremser; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This doctoral thesis addresses the challenge of bringing two very different materials into intimate chemical contact: inorganic metal oxide nanoparticles and acrylic polymers. In order to achieve this ambitious goal, the work has been divided into a series of more accessible tasks. LÄS MER