Sökning: "Frida Eriksson"

Hittade 5 avhandlingar innehållade orden Frida Eriksson.

  1. 1. Fast ions and turbulent particle transport in tokamaks

    Författare :Frida Eriksson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NBI; numerical modelling; turbulence; drift waves; bump-on-tail; density peaking; Fusion plasma physics; wave-particle interaction;

    Sammanfattning : The presence of highly energetic (fast) ions, be it fusion born alpha particles or ions accelerated by auxiliary heating schemes, can affect the heating and transport of all particles in the plasma through two main mechanisms. First, fast ions may excite fast ion driven instabilities. LÄS MER

  3. 2. Nonlinear dynamics of frequency sweeping energetic particle modes in tokamaks

    Författare :Frida Eriksson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; wave-particle interaction; Fusion plasma physics; bump-on-tail; toroidal Alfvén eigenmode; holes and clumps;

    Sammanfattning : In a burning plasma, such as the next generation tokamak experiment ITER, significant numbers of highly energetic particles will be produced via nuclear reactions. The presence of energetic particles, be it fusion born alpha particles or ions accelerated by auxiliary heating schemes, may excite kinetic instabilities and thereby affect the heating and transport of all particles in the plasma. LÄS MER

  4. 3. Kollegialt lärande i matematik : Ett verksamhetsteoretiskt perspektiv

    Författare :Frida Harvey; Per Nilsson; Anna Teledahl; Inger Eriksson; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Activity system; Contradictions; Cultural Historical Activity Theory; PLCs in mathematics; mathematics education; Kollegialt lärande; kollegialt lärande i matematik; matematikdidaktik; motsättningar; verksamhetssystem; verksamhetsteori;

    Sammanfattning : In the last decade, Professional Learning Communities (PLCs) are increasingly used as models for teachers’ joint efforts in developing their teaching. The overall aim of this licentiate thesis is to expand the knowledge of PLCs in mathematics, by deepening the understanding of aspects that influence the establishment, organization, and implementation of PLCs in mathematics. LÄS MER

  5. 4. Responsible Conduct in Dual Use Research : Towards an Ethic of Deliberation in the Life Sciences

    Författare :Frida Kuhlau; Anna T Höglund; Stefan Eriksson; Kathinka Evers; Alexander Kelle; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bioethics; biological warfare; biological weapons; biosecurity; communicative ethics; deliberative ethics; dual use; ethical competence; life science research; precautionary principle; responsible conduct; Bioetik; Bioethics;

    Sammanfattning : Life scientists have increasingly been asked to incorporate a dual use responsibility in their research conduct. In this thesis, different aspects of what constitutes a reasonable responsibility in terms of avoiding harmful misuse of research for biological weapon purposes have been explored. LÄS MER

  7. 5. Fat cell insulin resistance : an experimental study focusing on molecular mechanisms in type 2 diabetes

    Författare :Frida Renström; Jan Eriksson; Anna Krook; Umeå universitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; adipocyte; insulin signaling; insulin; glucose; IRS-1; glucose uptake; insulin resistance; typ 2 diabetes; serum; Medicine; Medicin;

    Sammanfattning : The aim of the present thesis was to further increase our understanding of mechanisms contributing to and maintaining cellular insulin resistance in type 2 diabetes (T2D). For this reason, the effects of high glucose and insulin levels on glucose transport capacity and insulin signaling, with emphasis on insulin receptor substrate 1 (IRS-1) were assessed in fat cells. LÄS MER