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Showing result 1 - 5 of 85 swedish dissertations matching the above criteria.

  2. 1. Dynamics of nutrient mass transport : A river basin evaluation

    Author : Gunnar Karlsson; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Motala ström; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : Human settlements and activities can dramatically change and accelerate the rate of eutrophication in a river basin. An undesirable increase in the input of nutrients, e.g. phosphorus and nitrogen, to a surface water causes adverse water quality conditions. READ MORE

  4. 2. Closing nutrient cycles

    Author : Usman Akram; Uno Wennergren; Karin Tonderski; Genevieve Metson; Bob Rees; Linköpings universitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Adequate and balanced crop nutrition – with nitrogen (N), phosphorus (P), and potassium (K) – is vital for sustainable crop production. Inadequate and imbalanced crop nutrition contributes to the crop yield gaps – a difference in actual and potential crop yield. READ MORE

  5. 3. Long-term development, modeling and management of nutrient loading to inland and coastal waters

    Author : Amelie Darracq; Georgia Destouni; Andrea Rinaldo; Stockholms universitet; []
    Keywords : Nutrients; catchments; environmental management; climate change; population and lifestyle development; subsurface-surface water interactions; long-term simulations; nutrient retention; modeling; hydrology; transport processes; biogeochemistry; scaling; transport and reaction rates; Physical Geography; geografi med naturgeografisk inriktning;

    Abstract : Environmental and water system protection and restoration require accurate knowledge and quantification of waterborne pollutant transport, retention-release and transformation processes taking place in the subsurface, river, lake and sea water systems, and at the interfaces between these systems. This thesis investigates the importance of spatial model resolution for such quantification and the possible long-term nutrient load development under different human perturbations and nutrient source management scenarios in the Swedish Norrström drainage basin, based on simulations with the GIS-based dynamic nutrient transport-attenuation model POLFLOW. READ MORE

  6. 4. Membrane-remodeling by SNX18 in endosomal transport and autophagy

    Author : Karin Håberg; Sven Carlsson; Geir Bjørkøy; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Sorting nexin; SNX9-family; SNX18; endosomal transport; autophagy; medicinsk biokemi; Medical Biochemistry;

    Abstract : The intracellular space of eukaryotic cells is subdivided into functionally distinct membrane-enclosed organelles. Regulation of these intracellular membranes requires an intricate network of specialized lipids and proteins that maintain organellar integrity and mediate transport between organelles. READ MORE

  7. 5. Cytokines and lipids in pregnancy – effects on developmental programming and placental nutrient transfer

    Author : Susanne Lager; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; adipose tissue; amino acids; cytokines; developmental programming; free fatty acids; insulin resistance; interleukin-6; lipoprotein lipase; nutrient transport; placenta; toll-like receptor 4;

    Abstract : Metabolic disturbances, in particular those associated with nutritional challenges, that take place during development, both in utero and early postnatal life, have long-lasting health consequences on an individual. The most pronounced evidence of these challenges is a deviation in birth weight. READ MORE