Sökning: "Jonas nordström"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Jonas nordström.

  1. 1. The Healthy Ageing Initiative : Prevention of falls and fractures

    Författare :Jonas Johansson; Peter Nordström; Anna Nordström; Jon Karlsson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; prospective falls; cohort study; fall risk; gait variability; postural stability; physical activity; bone properties; objective measurements; older individuals;

    Sammanfattning : The world is currently experiencing a dramatic increase in the number of older individuals, an amount that is expected to double between 2015 and 2050. This increase will likely affect the prevalence of age-related functional impairments, such as those caused by fractures. LÄS MER

  3. 2. On the existence of complex-valued harmonic morphisms

    Författare :Jonas Nordström; Matematik (naturvetenskapliga fakulteten); []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Harmonic morphisms; foliations; minimal submanifolds; Lie groups;

    Sammanfattning : This thesis consists of 4 papers, their content is described below: Paper I. We present a new method for manufacturing complex-valued harmonic morphisms from a wide class of Riemannian Lie groups. This yields new solutions from an important family of homogeneous Hadamard manifolds. LÄS MER

  4. 3. Temporal and spatial variation in predation on roe deer fawns

    Författare :Jonas Nordström; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : This thesis deals with variation in mortality of roe deer fawns, over time and in space, caused by red fox and Eurasian lynx predation in a boreal landscape. The thesis considers historic and recent effects of vole population dynamics on red fox predation on roe deer fawns, using long term time series from Grimsö Wildlife Research Area. LÄS MER

  5. 4. Tourism and travel : accounts, demand and forecasts

    Författare :Jonas Nordström; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Turism;

    Sammanfattning : .... LÄS MER

  7. 5. Colloidal fumed silica and soluble silicates — Interactions and microstructure

    Författare :Jonas Nordström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Electrolytes; Infrared spectroscopy; Alkaline sodium silicate; Colloidal stability; Ionic liquids; Gelation; Raman spectroscopy; Photon correlation spectroscopy; Fumed silica; Water glass;

    Sammanfattning : Colloidal dispersions and gels are important material systems with applications in many industrial processes and consumer products. This thesis aims at increasing the understanding of colloidal interactions and the phase transition from a colloidal dispersion to an arrested structure in two systems based on silica. LÄS MER