Search for dissertations about: "Biological factors"
Showing result 1 - 5 of 1817 swedish dissertations containing the words Biological factors.
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1. Genomic and morphological diversity of marine planktonic diatom-diazotroph associations : a continuum of integration and diversification through geological time
Abstract : Symbioses between eukaryotes and nitrogen (N2)-fixing cyanobacteria (or diazotrophs) are quite common in the plankton community. A few genera of diatoms (Bacillariophyceae) such as Rhizosolenia, Hemiaulus and Chaetoceros are well known to form symbioses with the heterocystous diazotrophic cyanobacteria Richelia intracellularis and Calothrix rhizosoleniae. READ MORE
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2. Biological risk factors for crime : Adverse perinatal events and psychophysiology
Abstract : Biological risk factors for crime have been largely neglected within main-stream criminology. However, a large body of research has over the past few decades converged on the conclusion that it is important to consider biological risk factors for crime, as they may help to inform theory and etiology. READ MORE
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3. Population Genetic Structure of Black Grouse (Tetrao tetrix) : From a Large to a Fine Scale Perspective
Abstract : Black grouse (Tetrao tetrix) is a bird species with a lek mating system found in the Palearctic boreal taiga. It is assumed that it has a continuous distribution along Scandinavia and Siberia, whereas in Central Europe it has declined during the last decades. READ MORE
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4. Wastewater treatment and biomass generation by Nordic microalgae : growth in subarctic climate and microbial interactions
Abstract : Nordic native microalgal strains were isolated, genetically classified and tested for their ability to grow in municipal wastewater. Eight of the isolated strains could efficiently remove nitrogen and phosphate in less than two weeks. Two of these strains, Coelastrella sp. READ MORE
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5. Studies of Budding Yeast Transcription Factors Acting Downstream of Nutrient Signaling Pathways
Abstract : Being able to respond to extracellular cues such as nutrients and growth factors is of vital importance to all living cells. Pathways have therefore evolved which can sense the extracellular status, transmit a signal through the cell and affect gene expression, which ultimately enables adaptation. READ MORE