Search for dissertations about: "Kristina Lynch"

Found 3 swedish dissertations containing the words Kristina Lynch.

  2. 1. Investigations of auroral electric fields and currents

    Author : Tommy Johansson; Göran Marklund; Kristina Lynch; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; auroral physics; auroral electric fields; auroral potential structures; auroral particle acceleration; Space physics; Rymdfysik;

    Abstract : The Cluster spacecraft have been used to investigate auroral electric fields and field-aligned currents (FACs) at geocentric distances between 4 and 7 Re. The electric fields have been measured by the EFW instrument, consisting of two pairs of spherical probes, and the FACs have been calculated from measurements of the magnetic field by the FGM fluxgate magnetometer. READ MORE

  4. 2. High altitude ion heating observed by the Cluster spacecraft

    Author : Martin Waara; Hans Nilsson; Kristina Lynch; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space physics; Rymdfysik; rymd- och plasmafysik; Space and Plasma Physics;

    Abstract : This thesis deals with heating of outowing oxygen ions at high altitude above the polar cap using data from the Cluster spacecraft. oInospheric plasma may flow up from the ionosphere but at velocities which are low enough that the ions are still gravitationally bound. For the ions to overcome gravity, further acceleration is needed. READ MORE

  5. 3. Genetic and epidemiological studies of hereditary colorectal cancer

    Author : Kristina Cederquist; Henrik Grönberg; Irina Golovleva; Gösta Holmgren; Mef Nilbert; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Lynch syndrome; HNPCC; colorectal cancer; endometrial cancer; cancer risk; MSI; MLH1; MSH2; MSH6; genome-wide scan; Genetik; Clinical genetics; Klinisk genetik; medicinsk genetik; Medical Genetics;

    Abstract : Lynch syndrome (Hereditary Nonpolyposis Colorectal Cancer, HNPCC) is the most common hereditary syndrome predisposing to colorectal cancer, accounting for 1-3% of all colorectal cancer. This multi-organ cancer predisposition syndrome is caused by mutations in the mismatch repair (MMR) genes, especially MLH1 and MSH2, and to lesser extents MSH6 and PMS2, which lead to widespread genetic instability and thus microsatellite instability (MSI). READ MORE