Sökning: "Christer Ljunggren"

Hittade 3 avhandlingar innehållade orden Christer Ljunggren.

  1. 1. Determination of virgin rock stresses by fracturing methods

    Författare :Christer Ljunggren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : .... LÄS MER

  3. 2. New developments in hydrofracturing stress measurement techniques and a comparison to the HTPF method

    Författare :Christer Ljunggren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : This thesis describes two hydraulic methods for rock stress measurements; hydraulic fracturing and hydraulic tests on pre-existing fractures (the HTPF method). It includes theories to evaluate stress field information for somewhat extraordinary stress and field situations, experimental investigations and field measurements. LÄS MER

  4. 3. Sleep-disordered breathing in women : Associations with cardiovascular disease and the significance of sleep apnea during REM sleep

    Författare :Mirjam Ljunggren; Eva Lindberg; Christer Janson; Eva Svanborg; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Obstructive sleep apnea; REM sleep; cardiovascular disease; heart failure; Lungmedicin; Lung Medicine;

    Sammanfattning : Background: Sleep-disordered breathing (SDB) is associated with an increased risk of cardiovascular disease, but it is unclear which elements of SDB that are most harmful to the cardiovascular system and whether the associations observed in men also apply to women.Aim: To investigate associations between different aspects of SDB and cardiovascular disease in womenMethods and results: All four papers were based on participants in “Sleep and Health in Women” (SHE), a population-based cohort study of women. LÄS MER