Search for dissertations about: "Nick Thomas"

Found 2 swedish dissertations containing the words Nick Thomas.

  2. 1. Regolith Properties of Mercury Derived from Observations and Modelling

    Author : Johan Warell; Nick Thomas; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Mercury; Moon; imaging; photometry; spectroscopy; regolith; space weathering; light scattering; spectral modelling; Astronomi; Astronomy and astrophysics; Astronomi och astrofysik; astronomi; Astronomy;

    Abstract : The properties of Mercury's regolith have been investigated at optical and near-infrared wavelengths with high-resolution imaging, photometric, and spectroscopic observations with the Swedish Vacuum Solar Telescope and the Nordic Optical Telescope. A new global optical map at a spatial resolution of 200 km shows that the well known (from Mariner 10) and poorly known hemispheres are indistinguishable with respect to the distribution, number density, and morphological parameters of bright albedo features. READ MORE

  4. 2. Homologous recombination at replication forks in mammalian cells

    Author : Cecilia Lundin; Thomas Helleday; Klaus Erixon; Keith W. Caldecott; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Genetics; Genetik;

    Abstract : Accumulating evidence indicates that homologous recombination plays an important role in mammalian cells, primarily in the reactivation of stalled replication forks. During a normal round of replication, stalling of the replication fork occurs frequently when a nick or a lesion, which cannot be by-passed, is encountered. READ MORE