Search for dissertations about: "Jonas Björk"

Found 3 swedish dissertations containing the words Jonas Björk.

  1. 1. Case-control studies on risk factors for myeloid leukemias and myelodysplastic syndromes

    University dissertation from Department of Occupational and Environmental Medicine, Lund University

    Author : Jonas Björk; [2001]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; epidemiologic methods; bias epidemiology ; attributable fraction; smoking; hobbies; occupational exposure; chromosome aberrations; epidemiology; cytogenetic; Occupational health; industrial medicine; Yrkesmedicin; arbetsmiljömedicin;

    Abstract : Case-control studies comprising telephone interviews for 333 cases of acute myeloid leukemia (AML), 226 cases of Philadelphia chromosome-positive chronic myeloid leukemia (Ph+ CML), 330 cases of myelodysplastic syndromes (MDS), and matched controls were conducted. Information had to be obtained from next-of-kin much more often for cases (85%) than for controls (18%). READ MORE

  2. 2. Epidemiology of Physical Activity and Fragility Fractures

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Karl Stattin; Liisa Byberg; Jonas Björk; [2020]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; physical activity; fracture; fragility fracture; epidemiology; cohort study; proteomic; walking; exercise; cross-country skiing; skiing; Vasaloppet.; Epidemiologi; Epidemiology;

    Abstract : Fragility fractures mainly affect elderly individuals and often cause long term pain, loss of function and higher mortality rates. Physical activity improves balance, increases muscle strength and bone mineral density, and may reduce the risk of fragility fractures. READ MORE

  3. 3. Tree-limit ecotonal response to Holocene climate change in the Scandes Mountains of west-central Sweden

    University dissertation from Department of Geology, Lund University

    Author : Jonas Bergman; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; tree-limit ecotone; alpine vegetation; tephrochronology; peat humification; plant macrofossils; Palaeobotany; fylogeni; Paleobotanik; palynology; phylogeny; palynologi; Geologi; Geology; pedology; geomorphology; Physical geography; klimatologi; geomorfologi; climatology; Fysisk geografi; cartography; Holocene climate; palaeoecology; marklära; kartografi; pollen influx;

    Abstract : The aim of this thesis was to reconstruct the Holocene vegetational and climatic development in the Sylarna-Storulvån area, western Jämtland, in the central Scandes Mountains. Temporal trends and fluctuations in the elevation and vegetational character of the tree-limit ecotone were studied mainly by means of pollen and plant macrofossil analysis of two lake sediment sequences (Lakes Stentjärn and Spåime), located above the present-day tree-limit. READ MORE