Sökning: "Microorganism"

Visar resultat 26 - 30 av 72 avhandlingar innehållade ordet Microorganism.

  1. 26. Metal accumulation by microorganisms : Characteristics and implications for soil systems

    Författare :Maria Ledin; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : The aim of the present study was to investigate the potential role of microbial accumulation in the mobility of metals in soil systems. As a first approach, the metal-accumulating properties of three bacterial species were studied to determine to what extent and under what conditions the accumulation occurred. LÄS MER

  3. 27. Process development for combined pentose and hexose fermentation

    Författare :Fredrik Nielsen; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioethanol; Lignocellulose; Xylose fermentation; Co-fermentation; Process design; Agricultural residues; Saccharomyces cerevisiae;

    Sammanfattning : Second-generation ethanol from lignocellulose is a sustainable alternative that can partially replace fossil fuels. To be competitive with first generation ethanol from sugar and starch crops and fossil fuels, the conversion efficiency and ethanol yields of second-generation ethanol conversion processes must be improved. LÄS MER

  4. 28. To reduce a ribonucleotide – Radical solutions in enzymology in form and function

    Författare :Oskar Aurelius; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ribonucleotide reductase; X-ray crystallography; Small-angle X-ray scattering; nucleotide metabolism; protein biophysics; metalloproteins; anaerobic enzymology;

    Sammanfattning : It has been more than 50 years since the enzyme system ribonucleotide reductase (RNR), catalysing the reduction of ribonucleotides to deoxyribonucleotides, was first discovered. RNR was also the first time that radical chemistry was revealed in an enzyme. LÄS MER

  5. 29. Microbial adaptations and controlling mechanisms of surface-associated microhabitat heterogeneity in aquatic systems

    Författare :Jan Torsten Jeske; Stefan Bertilsson; Annelie Wendeberg; Andreas Schramm; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microbial habitat heterogeneity; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Habitat heterogeneity is a driving factor for speciation and ecosystem functioning and is well studied in macro-ecology. Yet our understanding of microbial adaptations, and governing processes is incomplete. LÄS MER

  7. 30. Modelling Evolution : From non-life, to life, to a variety of life

    Författare :Yu Liu; David J. T. Sumpter; Peter Dittrich; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Mathematical biology; Biocomplexity; Artificial chemistry; Ecosystem evolution; Origin of life; Self-replication; Prebiotic evolution; Collectively-catalytic; Golden ratio; Tillämpad matematik och statistik; Applied Mathematics and Statistics;

    Sammanfattning : Life is able to replicate itself, e.g., a microorganism is able to divide into two identical ones, and a single plant is able to forest a whole island. LÄS MER