Search for dissertations about: "Cluster evolution"

Showing result 6 - 10 of 79 swedish dissertations containing the words Cluster evolution.

  2. 6. The evolution of the nuclear envelope

    Author : Nadja Neumann; Anthony Poole; Gáspár Jékely; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nuclear pore complex; bouquet; meiosis; nucleus; eukaryote evolution; nucleoporin; tree of life; stem group; recombination; Molecular biology; Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : The nucleus is one of the defining features of eukaryotes and the question of its origin is intimately linked to the evolution of the eukaryotic cell. It is delimited by a double lipid bilayer called the nuclear envelope, which separates the nuclear interior from the cytoplasm. READ MORE

  4. 7. The Dynamics of Star Cluster Formation

    Author : Juan Pablo Farias Osses; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Star Cluster Formation; Star Formation; N-body simulations; Astronomy Astrophysics;

    Abstract : How do star clusters form? We care, since these are the birth sites of most stars, perhaps including our own Sun. There are a great variety of different theoretical models of cluster formation and our main goal in this thesis is to examine the implications of these for the dynamical evolution of a cluster's stellar population, including the ejected stars. READ MORE

  5. 8. New Catalytic Systems for Light-driven Hydrogen Evolution

    Author : Chuanshuai Li; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; photocatalysis; hydrogen evolution; semiconductor; molecular catalyst; charge transfer; mechanism;

    Abstract : Solar-driven reduction of water to produce hydrogen is one of the most promising ways to develop sustainable cleanenergy for the future. The challenge in photocatalytic hydrogen evolution research is to design inexpensive catalystsand construct efficient hydrogen production systems. READ MORE

  6. 9. Directed Enzyme Evolution of Theta Class Glutathione Transferase : Studies of Recombinant Libraries and Enhancement of Activity toward the Anticancer Drug 1,3-bis(2-Chloroethyl)-1-nitrosourea

    Author : Anna-Karin Larsson; Bengt Mannervik; Ian Cotgreave; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; glutathione transferase; directed evolution; 1; 3-bis 2-chloroethyl -1-nitrosourea; alkyltransferase; recombinant libraries; chloroethylnitrosourea; multi-dimensional data analysis; Biokemi; Biochemistry; Biokemi;

    Abstract : Glutathione transferases (GSTs) are detoxication enzymes involved in the cellular protection against a wide range of reactive substances. The role of GSTs is to catalyze the conjugation of glutathione with electrophilic compounds, which generally results in less toxic products. READ MORE

  7. 10. Structure Evolution during Phase Separation and Gelation of Biopolymer Mixtures

    Author : Niklas Lorén; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microstructure; gelatin maltodextrin; biopolymer mixtures; structure evolution; phase separation; stereology; confocal laser scanning microscopy; image analysis; spinodal decomposition; transmission electron microscopy; gelation;

    Abstract : This thesis focuses on the kinetics of phase separation and gelation in aqueous mixtures of gelatin and maltodextrin. The structure evolution of these mixtures at different length scales was recorded by confocal laser scanning microscopy (CLSM) and transmission electron microscopy (TEM). The microstructure was quantified by image analysis. READ MORE