Search for dissertations about: "Species differences"

Showing result 16 - 20 of 789 swedish dissertations containing the words Species differences.

  2. 16. Blood-Brain Barrier Transport : Investigation of Active Efflux using Positron Emission Tomography and Modelling Studies

    Author : Stina Syvänen; Margareta Hammarlund-Udenaes; Mats Bergström; Gunnar Blomquist; Jashvant Unadkat; Uppsala universitet; []
    Keywords : Pharmaceutical biosciences; pharmacokinetics; P-glycoprotein; blood-brain barrier; modelling; PET; active efflux; species differences; [11C]verapamil; drug development; Farmaceutisk biovetenskap;

    Abstract : This thesis examines the transport of exogenous molecules across the blood-brain barrier (BBB), focusing on active efflux, using positron emission tomography (PET), computer simulation and modelling. P-glycoprotein (P-gp) inhibition was studied using [11C]verapamil and [11C]hydroxyurea was investigated as a new marker for active efflux transport. READ MORE

  4. 17. Spaces of appearance : Intergenerational and interspecies relations in the Anthropocene

    Author : Elisabeth Kring; Mats Börjesson; Cecilia Åsberg; Stockholms universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; children; generations; species; the environment; appearance; temporality; political action; the acting body-subject; school strike for the climate; Arendt; Merleau-Ponty; Child and Youth Science; barn- och ungdomsvetenskap;

    Abstract : The thesis brings together childhood studies and the problems of environmental degradation and climate change. It focuses on intergenerational and interspecies relations and aspects connected to environmental sustainability. READ MORE

  5. 18. Plasticity in mice nociceptive spinal circuits -role of cell adhesion molecules

    Author : Jonas Thelin; Neurofysiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Long term-potentiation; Cell adhesion molecule; Pain; Somatosensory imprinting; Medicin människa och djur ; Medicine human and vertebrates ; Nociceptive withdrawal reflex; Species differences; Central sensitisation; Mouse strains; Spinal cord;

    Abstract : Introduction: To understand the function of the genes and their products in the pain system, studies will have to deal with complex issues related to intercellular communication, e.g. plasticity in neuronal networks. READ MORE

  6. 19. Soil phosphorus – a multidimensional resource that plays an important role for grassland plant species richness

    Author : Jakob Sandberg; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; niche dimension; nutrient limitation; niche differentiation; competition; soil nitrogen; soil phosphorus; plant diversity; species richness; Grassland; land use; landscape scale;

    Abstract : The semi-natural grassland habitats contain an important part of the plant diversity in Europe. Changes in farming practices have lead to drastic decreases in plant species richness. The aim of the present thesis is to contribute to the knowledge about mechanisms governing the plant species richness in grasslands with emphasis on soil nutrients. READ MORE

  7. 20. Plant colonization of oak plantations - the interactive effects of local environment and land-use history

    Author : Karin Valtinat; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nitrogen mineralization; Phosphorus; Plant ecology; Växtekologi; Soil acidity; Seed sowing; Dispersal limitation; Species diversity; Indicator species analysis; Functional groups; Succession; Understory vegetation; Land-use history; Temperate forest;

    Abstract : In Europe, only small fragments of deciduous woodlands remain intact and species dependent on this ecosystem have declined. In southern Sweden, a shifting trend during the 20th century, with more afforestations on former arable land, resulted in new oak stands. These new stand are either on former arable fields or on continuously forested land. READ MORE