Search for dissertations about: "core groups"

Showing result 1 - 5 of 273 swedish dissertations containing the words core groups.

  2. 1. Properties of Asphaltenes with emphasis on NMR self-diffusion as the investigating technique

    Author : Jenny-Ann Östlund; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; amphiphilic; diffusion; oil; mixture analysis; CORE; stability; NMR; pulsed gradient spin echo; light scattering; XPS; asphaltene; chemical interactions;

    Abstract : Asphaltenes are high-molecular weight, highly aromatic molecules that have a strong tendency to aggregate. Asphaltenes are found in oil and may, if they form particles, cause problems during oil production and handling. READ MORE

  4. 2. Recent trends in the epidemiology of gonorrhoea in Sweden : the role of importation and core groups

    Author : Torsten Berglund; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Neisseria gonorrhoeae; epidemiology; core groups; importation; serovar; PFGE; antimicrobial resistance; men who have sex with men MSM ;

    Abstract : In 1997 the gonorrhoea incidence in Sweden started to rise from a low-prevalent level after some 25 years of steady decline. The rise has continued and coincides with similar trends in other sexual transmitted infections (STIs) and in other Western industrialized countries. READ MORE

  5. 3. Molecular overlayers on homogeneous and heterogeneous metal surfaces studied by core-level photoemission

    Author : Maria Smedh; Fysiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; photoelectron spectroscopy; core-level photoemission; electron energy loss spectroscopy; single crystal surfaces; metal surfaces; heterogeneous surfaces; adsorption; adsorbed molecules; hydrocarbons; molecular vibrations; carbon monoxide; adsorption sites; adsorption energy; diffusion; dissociation; Physics; Fysik; Fysicumarkivet A:2001:Smedh;

    Abstract : The main topic of this thesis is the investigation of small molecules adsorbed on metal surfaces by means of core-level photoemission spectroscopy. The thesis consists of three parts; The first group of papers concerns the effects of internal molecular vibrations on the core-level photoemission spectra. READ MORE

  6. 4. Power from Below? : The Impact of Protests and Lobbying on School Closures in Sweden

    Author : Jonas Larsson Taghizadeh; Katrin Uba; Anders Lindbom; Peter Esaiasson; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; school closure; protest; lobbying; interest groups; social movements; welfare retrenchment; political parties; skolnedläggning; protest; lobbying; lokalpolitik; intressegrupper; sociala rörelser; välfärdsstat; Statskunskap; Political Science;

    Abstract : In recent decades, there has been a considerable expansion of citizen participation in protests and voluntary advocacy groups. To analyze this development, the social movement literature and the interest group literature have emerged. READ MORE

  7. 5. Input Calibration, Code Validation and Surrogate Model Development for Analysis of Two-phase Circulation Instability and Core Relocation Phenomena

    Author : Viet-Anh Phung; Pavel Kudinov; Cristophe Demaziere; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Reactor system code; input calibration; code validation; surrogate model; two-phase circulation flow instability; in-vessel core relocation; genetic algorithm; artificial neural network; Reaktorsystemkod; indata kalibrering; kodvalidering; surrogatmodell; två-fas cirkulationsflöde; instabilitet; härdrelokering i reaktortanken; genetisk algoritm; artificiella neurala nätverk; Fysik; Physics;

    Abstract : Code validation and uncertainty quantification are important tasks in nuclear reactor safety analysis. Code users have to deal with large number of uncertain parameters, complex multi-physics, multi-dimensional and multi-scale phenomena. READ MORE