Sökning: "doktorand avhandling"

Visar resultat 11 - 14 av 14 avhandlingar innehållade orden doktorand avhandling.

  1. 11. Magnetic orientation in migratory birds

    Författare :Rachel Muheim; Funktionell zoologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Animal ecology; Djurekologi; cue-conflict; clock-shift; cue calibration; geomagnetic field; high Arctic latitudes; Emlen funnel; magnetic compass; magnetoreception; navigation; migration; bird; orientation;

    Sammanfattning : My thesis focuses on magnetic orientation in migratory birds, i.e. how they can perceive information from the Earth’s magnetic field and use it for orientation. LÄS MER

  3. 12. Vertical Nanowire High-Frequency Transistors

    Författare :Sofia Johansson; NanoLund: Centre for Nanoscience; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanowires; III-V semiconductors; metal-oxide-semiconductor field-effect transistors; border traps; high-k;

    Sammanfattning : This thesis explores a novel transistor technology based on vertical InAs nanowires, which could be considered both for low-power high-frequency analog applications and for replacing Si CMOS in the continued scaling of digital electronics. The potential of this device - the vertical InAs nanowire MOSFET – lies in the combination of the outstanding transport properties of InAs and the improved electrostatic control of the gate-all-around geometry. LÄS MER

  4. 13. A multi-sector framework for accelerating renewable energy deployment in power, transport and industry

    Författare :Emanuele Taibi; Francesco Fuso-Nerini; Laurens de Vries; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Technology; Energiteknik;

    Sammanfattning : Climate change is the defining issue of our time (United Nations, 2018). Renewable energy, combinedwith energy efficiency, can potentially be the most effective solution to address energy-relatedGreenhouse Gas (GHG) emissions. LÄS MER

  5. 14. Element 115

    Författare :Ulrika Forsberg; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; superheavy elements; element 115; new elements; alpha decay; X rays; gamma rays; nuclear structure; spontaneous fission; Fysicumarkivet A:2016:Forsberg; kärnstruktur; supertunga grundämnen; nya grundämnen; alfasönderfall; röntgenstrålning; gammastrålning; spontan fission; element 115; spektroskopi;

    Sammanfattning : This thesis is devoted to detailed studies of element 115 decay chains using the highly efficient multi-coincidence alpha, electron, gamma and X-ray detector setup TASISpec at the gas-filled separator TASCA at GSI, Darmstadt, Germany. In a three-week long experiment thirty new decay chains assumed to stem from element 115 isotopes were observed together with the very first detections of gamma rays and potential X-rays from these nuclei. LÄS MER