Sökning: "Erik Bergström"

Visar resultat 6 - 10 av 31 avhandlingar innehållade orden Erik Bergström.

  1. 6. Asthma and allergy in teenagers and young adults, risk-factors and T-cell regulation

    Författare :Sten-Erik Bergström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Asthma is one of the most common chronic diseases among teenagers and young adults. The prevalence of asthma among young adults in Sweden is approximately 7-10%. Despite this, only a limited number of studies have focused on asthma, allergy and allergic inflammation in this age group. LÄS MER

  3. 7. Timing-Based Localization using Multipath Information

    Författare :Andreas Bergström; Fredrik Gustafsson; Gustaf Hendeby; Fredrik Gunnarsson; Erik Leitinger; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The measurements of radio signals are commonly used for localization purposes where the goal is to determine the spatial position of one or multiple objects. In realistic scenarios, any transmitted radio signal will be affected by the environment through reflections, diffraction at edges and corners etc. LÄS MER

  4. 8. Macroalgae in the Baltic Sea : responses to low salinity and nutrient enrichment in Ceramium and Fucus

    Författare :Lena Bergström; Lars Ericson; Lena Kautsky; Erik Bonsdorff; Christine A Maggs; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; adaptation; asexual reproduction; Baltic Sea; Gulf of Bothnia; salinity; macroalgae; nutrients; sexual reproduction; stress; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : The brackish Baltic Sea is a marginal environment for both marine and freshwater species. The rate of ecological differentiation is presumably high due to strong selection pressure from a gradient of decreasing salinity that has been present in its current state for only about 3 000 years. LÄS MER

  5. 9. Spatial heterogeneity and biotic interactions : scaling from experiments to natural systems

    Författare :Ulf Bergström; Göran Englund; Erik Bonsdorff; Sebastian Diehl; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; zooekologi; Animal Ecology;

    Sammanfattning : Much of current ecological theory stems from experimental studies. These studies have often been conducted in closed systems, at spatial scales that are much smaller than the systems of interest. LÄS MER

  7. 10. Fractures in children : a population-based study from northern Sweden

    Författare :Erik Hedström; Sead Crnalic; Ulrica Bergström; Piotr Michno; Lucie Laflamme; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Epidemiology; fracture; child; pediatric; injury; epidemiologi; Epidemiology;

    Sammanfattning : Fractures and other injuries are notoriously common in childhood and adolescence and a major cause of morbidity. They place a heavy burden on individuals, families, health systems and society. LÄS MER