Search for dissertations about: "Primordial evolution"

Showing result 1 - 5 of 9 swedish dissertations containing the words Primordial evolution.

  1. 1. Inference of Hierarchical Structure in Complex Systems

    Author : Olof Görnerup; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Protein evolution; Substitution groups; Modularity; Hierarchical dynamics; RNA world; Genetic code; Aggregation; Primordial evolution; Molecular evolution; Model reduction; Self-organization; Lumping; Emergence; Coarse graining;

    Abstract : Hierarchical organization is a central property of complex systems. It is even argued that a system is required to be hierarchical in order to evolve complexity within reasonable time. A hierarchy of a system is defined as the set of self-contained levels at which the system operates and can be described on. READ MORE

  2. 2. The cosmic origin of fluorine and sulphur: Infrared spectroscopic studies of red giants

    University dissertation from Department of Astronomy and Theoretical Physics, Lund University

    Author : Henrik Jönsson; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemical evolution; near-infrared and mid-infrared spectroscopy; stellar abundances;

    Abstract : Disregarding the small primordial traces of the lightest elements, all metals have been formed in stellar processes, which means that the relative amount of metals in the Universe increases for every stellar generation. This build-up of elements is called chemical evolution and might be used both to constrain stellar models as well as understanding the formation and evolution of stellar populations. READ MORE

  3. 3. On the Abundances of Li, Be and O in Metal-Poor Stars in the Galaxy

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ana Elia García Pérez; Uppsala universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy; galactic evolution; stellar abundances; stellar atmospheres; spectral line formation; stellar mixing; Astronomi; NATURAL SCIENCES Physics Astronomy and astrophysics; NATURVETENSKAP Fysik Astronomi och astrofysik;

    Abstract : Stellar atmospheres constitute excellent environments to study the chemical evolution of our Galaxy. The chemical composition of these atmospheres reflects the composition of the gas from where these stars were born. READ MORE

  4. 4. Th Dynamics of Star Cluster Formation

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Juan Pablo Farias Osses; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Star Formation; Star Clusters; Stellar Dynamics;

    Abstract : A major question in astrophysics is how star clusters form. These objects are important, since they are the birth sites of most stars, perhaps including our own Sun. READ MORE

  5. 5. Carbon metabolism in non-conventional yeasts: biodiversity, origins of aerobic fermentation and industrial applications

    University dissertation from Department of Biology, Lund University

    Author : Nerve Zhou; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aerobic fermentation; carbon metabolism; non-conventional yeasts; strain development;

    Abstract : Abstract: For millennia, the “yeast” Saccharomyces cerevisiae remains by far the most extensively studied and exploited yeast in food and industrial applications. A number of researches and developments have been done since the establishment of the biochemical function of yeast by Louis Pasteur in 1860, however modern lifestyles often connected to food related health trends demand new and innovative food products. READ MORE