Search for dissertations about: "Endogenous earth sciences"
Showing result 1 - 5 of 8 swedish dissertations containing the words Endogenous earth sciences.
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1. Toxicometabolomics and biotransformation product screening in single zebrafish embryos
Abstract : Over the last decade environmental agencies worldwide have escalated their work to phase out animal testing for the purposes of chemical regulation. Meanwhile the number of commercially available chemicals and the requirements for hazard assessments have both increased, creating a large need for substitution of traditional in vivo assays with in vitro tests. READ MORE
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2. Identification and origin of potential background carcinogens : endogenous isoprene and oxiranes, dietary acrylamide
Abstract : The primary aims of this thesis are to discover carcinogens in the general population by identification of products of reaction with hemoglobin (Hb adducts) in blood from humans without known exposure, and tracing the origin of the adducts. Chemicals and/or their metabolites forming Hb adducts mostly also react with DNA and may thus cause mutations, a key event in carcinogenesis. READ MORE
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3. The circadian clock in annuals and perennials : coordination of Growth with Environmental Rhythms
Abstract : Since the first signs of life on planet earth, organisms have had to adapt to the daily changes between light and dark, and high and low temperatures. This has led to the evolution of an endogenous time keeper, known as the circadian clock. READ MORE
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4. Managing coupled human and natural systems (CHANS) : the case of water
Abstract : Many sustainability challenges of the 21st century are the result of poor management of coupled human and natural systems (CHANS). Limited understanding of the mechanisms that give rise to complex dynamics in CHANS has contributed to overexploitation and degradation of water and other natural resources around the globe, leading to unintended consequences of well-intentioned policies. READ MORE
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5. Prediction, Design and Determination of Protein Structures
Abstract : The three-dimensional structure of protein is encoded in its amino acid sequence. Modern structure prediction algorithms make it possible to predict the structure of small proteins using sequence information alone. READ MORE