Search for dissertations about: "Cluster evolution"

Showing result 16 - 20 of 79 swedish dissertations containing the words Cluster evolution.

  2. 16. Single-cell RNA sequencing provides novel insights into spider development and represents an innovative alternative to study the evolution and development of panarthropods

    Author : Brenda Irene Medina-Jiménez; Ralf Janssen; Graham Budd; Angelika Stollewerk; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; panarthropod; spider embryo; single-cell RNA sequencing; EvoDevo; candidate gene approach; gene expression; cluster marker; Biology with specialization in Molecular Biology; Biologi med inriktning mot molekylärbiologi; Earth Science with specialization in Historical Geology and Palaeontology; Geovetenskap med inriktning mot historisk geologi och paleontologi;

    Abstract : Panarthropoda is a monophyletic group of invertebrate animals with a segmented body, paired appendages, dorsal brain, and ventral nerve cords. In order to study the mechanisms underpining their evolution, I study the genetic factors that drive their development. READ MORE

  4. 17. Star clusters as engines of galaxy evolution

    Author : Mattia Sirressi; Angela Adamo; Matthew Hayes; Paul Crowther; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Extragalactic astronomy; Galaxies; Star formation; Interstellar medium; Stellar feedback; Ultraviolet surveys; Hubble Space Telescope; Spectroscopy; Data analysis; Astronomy; astronomi;

    Abstract : Feedback in star forming galaxies is the key process that regulates how many stars form given the available gas reservoir. The radiation, energy and momentum released by the stellar activity and the active galactic nuclei change the physical properties of the gas in the galaxy such as the ionisation state, the density and the kinematics. READ MORE

  5. 18. Crowded Field Photometry and Luminosity Function Analysis as Probes of Galactic Evolution

    Author : Ralph Snel; Astronomi - Genomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy; observational; Methods: data analysis; statistical - Techniques: photometric - Stars: luminosity function; imaging; evolution - Galaxies: stellar content; mass function; space research; cosmic chemistry; Astronomi; rymdvetenskap; kosmisk kemi; Fysicumarkivet A:1998:Snel;

    Abstract : Crowded field photometry is a powerful method to investigate stellar evolutionary processes in astrophysically interesting regions such as nearby external galaxies and globular cluster cores. While detectors are approaching the physical limits for photon detection, data analysis methods for crowded stellar fields are not yet equally sophisticated. READ MORE

  6. 19. Molecular evolution of the neuropeptide Y receptor family : Insights from mammals and fish

    Author : Amanda Wraith; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; Neurovetenskap; Neurology; Neurologi; Neurology; neurologi;

    Abstract : Most genes in the genomes of vertebrates form families with multiple members that are more or less closely related. This thesis concerns investigations of the neuropeptide Y (NPY) family of peptides and the family of receptors to which these peptides bind, the NPY receptors. READ MORE

  7. 20. The nature of stars with a common origin: clues from metallicity, elemental abundances, and kinematics

    Author : Cheng Liu; Astronomi - Genomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Stars: abundances; Galaxy: evolution; Galaxy: solar neighbourhood; Galaxy: bulge; Galaxy: globular clusters;

    Abstract : Most of field stars originate from dissolved star clusters. If the gas cloud is well mixed the stars in the cluster are expected to be chemically homogenous. READ MORE