Search for dissertations about: "Per Helander"

Found 4 swedish dissertations containing the words Per Helander.

  2. 1. Dynamics of Fast Ions in Tokamaks

    Author : Per Helander; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Fast ions play a prominent role in the heating of tokamak plasmas by, e.g., neutral- beam injection, ion-cyclotron-resonance heating, and alpha-particle heating. In this thesis, a number of physical and mathematical problems concerning the dynamics of fast ions in tokamaks are addressed. READ MORE

  4. 2. MHD Stability and Confinement of Plasmas in a Single Mirror Cell

    Author : Natalia Savenko; Olov Ågren; Per Helander; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; MHD; plasma confinement; magnetic mirror; adiabatic particle motion; adiabatic invariants; Teknisk fysik; Engineering physics; Teknisk fysik;

    Abstract : Thermonuclear fusion is a promising energy source for the future. If an economically efficient thermonuclear reactor would be built it has to be a cheap, safe, and highly productive electric power plant, or, a heating plant. READ MORE

  5. 3. Forage feeding in intensive lamb production : intake and performance in ewes and lambs

    Author : Carl Helander; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Successful feeding strategies of periparturient ewes and growing lambs are essential in intensive indoor lamb production. This thesis evaluated the effects of chopping grass silage and of mixing silage with concentrate on feed intake, dietary selection, chewing behaviour, faecal particle size and performance in pregnant and lactating ewes and in suckling and finishing lambs. READ MORE

  6. 4. Effects of child CBT and parent management training for children with disruptive behavioral disorders

    Author : Maria Helander; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: An early identification and treatment of children with disruptive behavior disorders such as oppositional defiant disorder and conduct disorder is important to prevent further development of psychiatric disorders and antisocial behavior. Parent management training (PMT) is considered an effective treatment and has been evaluated in numerous studies and meta-analyses. READ MORE