Search for dissertations about: "CIRC"

Showing result 1 - 5 of 12 swedish dissertations containing the word CIRC.

  2. 1. Some new Friedrichs-type inequalities in domains with microinhomogeneous structure

    Author : Yulia Koroleva; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

    Abstract : This Licentiate thesis is devoted to derive and discuss some new Friedrichs-type inequalities for functions, which belong to the Sobolev space $H^1$ in domains with microinhomogeneous structure and which vanish on a part of the boundary. The classical Friedrics inequality holds for functions from the space $\mathop{H^{\smash 1}}\limits^{\circ}$ with a constant depending only on the measure of the domain. READ MORE

  4. 2. Electrostatic turbulence and electron heating in collisionless shocks

    Author : Ahmad Lalti; Yuri V. Khotyaintsev; Hans Nilsson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Abstract : Collisionless shocks are one of the most peculiar phenomena in space where non-linear collective phenomena in the plasma dominate the dynamics. They are believed to be one of the most efficient particle accelerators in the universe, and have internal dynamics that are yet to be fully explored. READ MORE

  5. 3. Degradation mechanisms and long-term performance of PUR insulation in district heating pipes

    Author : Alberto Vega; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mechanical performance; thermal conductivity; District heating pipe; degradation mechanisms; long-term performance; rigid polyurethane foam;

    Abstract : District heating networks are used worldwide, especially in Scandinavian countries and also in many other countries, e.g. Germany, Russia, United States, South Korea and China. From an environmental point of view, district heating networks are a good alternative to more traditional building heating systems. READ MORE

  6. 4. Integral inequalities of Hardy and Friedrichs types with applications to homogenization theory

    Author : Yulia Koroleva; Andrey Piatniski; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

    Abstract : This PhD thesis deals with some new integral inequalities of Hardy and Friedrichs types in domains with microinhomogeneous structure in a neighborhood of the boundary. The thesis consists of six papers (Paper A -- Paper F) and an introduction, which put these papers into a more general frame and which also serves as an overview of this interesting field of mathematics. READ MORE

  7. 5. Trends in obesity and type 2 diabetes : ethnic aspects and links to adipokines

    Author : Mikael Lilja; Stefan Söderberg; Olov Rolandsson; Mats Eliasson; Kurt Svärdsudd; Umeå universitet; []
    Keywords : Type 2 diabetes; leptin; adiponectin; obesity; abdominal obesity; epidemiology; ethnicity; fasting glucose; post-load glucose; Family Medicine; allmänmedicin;

    Abstract : Objective The prevalence of obesity and related diseases such as type 2 diabetes mellitus (T2DM) is increasing worldwide, and the Asian Indian population seems to be particularly susceptible to developing T2DM, even at a low body mass index (BMI). In Sweden, the age-adjusted prevalence of diabetes has not increased despite increasing self-reported obesity. READ MORE