Sökning: "hellsten"

Visar resultat 11 - 15 av 26 avhandlingar innehållade ordet hellsten.

  1. 11. Characterization of Amino Acid Transporters : Transporters expressed in the central nervous system belonging to the Solute Carrier family SLC38

    Författare :Sofie Victoria Hellsten; Robert Fredriksson; Gether Ulrik; Uppsala universitet; []
    Nyckelord :Solute carriers; amino acid transporter; SLC38 family; SLC38A8; SNAT8; SLC38A10; SNAT10; SLC38A9; SNAT9; amino acid starvation; AAR; mTORC1; Neuroscience; Neurovetenskap;

    Sammanfattning : In cells and organelles transporters are responsible for translocation of amino acids, sugars and nucleotides among others. In the central nervous system (CNS), amino acid transporters can function as neurotransmitter transporters and nutrient sensors. LÄS MER

  3. 12. Non-linear dynamics of Alfvén eigenmodes excited by fast ions in tokamaks

    Författare :Tommy Bergkvist; Torbjörn Hellsten; Fulvio Zonca; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fusion plasma; tokamak; MHD; toroidal Alfvén eigenmodes; thermonuclear alpha particles; ion cyclotron resonance heating; Electrophysics; Elektrofysik;

    Sammanfattning : The tokamak is so far the most promising magnetic configuration for achieving a net production of fusion energy. The D-T fusion reactions result in 3.5 MeV alpha-particles, which may destabilize Alfvén eigenmodes through wave-particle interaction. LÄS MER

  4. 13. Urinary Bladder Carcinoma – Studies of Outcome of Current Management and Experimental Therapy

    Författare :Truls Gårdmark; Per-Uno Malmström; Jörgen Carlsson; Sverker Hellsten; Willem Oosterlinck; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Bladder; Epidemiology; Administration; Intravesical; Radiotherapy; Kirurgi; Surgery; Kirurgi;

    Sammanfattning : The thesis concerns the epidemiology, current and possible future treatment of urothelial cancer of the urinary bladder. The Swedish National Quality Registry for Bladder Cancer 1997-2001 was used to explore epidemiology, current therapies and outcome. More common in men, the incidence for Ta and T1 tumours peaks in the age range 70-79 years. LÄS MER

  5. 14. Modelling Ion Cyclotron Resonance Heating and Fast Wave Current Drive in Tokamaks

    Författare :Abdul Hannan; Torbjörn Hellsten; Dirk van Eester; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thermonuclear fusion; Tokamak; DIII-D; JET; ITER; DEMO; ICRF; ICRH; Fast magnetosonic waves; TTMP; ELD; ICRH; Thermonuclear;

    Sammanfattning : Fast magnetosonic waves in the ion cyclotron range of frequencies have the potential to heat plasma and drive current in a thermonuclear fusion reactor. A code, SELFO-light, has been developed to study the physics of ion cyclotron resonantheating and current drive in thermonuclear fusion reactors. LÄS MER

  7. 15. The potential of an unmanned aircraft system for surveying lake and river vegetation

    Författare :Eva Husson; Seppo Hellsten; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Landscape Ecology; Landskapsekologi;

    Sammanfattning : Vegetation in and along aquatic systems has important regulatory and ecological functions. Aquatic vegetation is also frequently used as an indicator of environmental conditions. To enhance our knowledge of the complex natural processes in the littoral zone, i.e. LÄS MER