Blar i forfatter "Byhring, Hanne Sigrun"

Viser treff 1-4 av 4

    • Hip fracture treatment in Norway deviation from evidence-based treatment guidelines: data from the Norwegian Hip Fracture Register, 2014 to 2018 

      Kjærvik, Cato; Stensland, Eva; Byhring, Hanne Sigrun; Gjertsen, Jan-Erik; Dybvik, Eva; Søreide, Odd (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-14)
      <i>Aims</i> - The aim of this study was to describe variation in hip fracture treatment in Norway expressed as adherence to international and national evidence-based treatment guidelines, to study factors influencing deviation from guidelines, and to analyze consequences of non-adherence.<p> <p><i>Methods</i> - International and national guidelines were identified and treatment recommendations ...

    • Minor element abundances in the corona and solar wind 

      Byhring, Hanne Sigrun (Doctoral thesis; Doktorgradsavhandling, 2011-10-21)
      Using a time-dependent numerical model that spans the chromosphere, corona and solar wind, abundance variations resulting from gravitational settling in the chromosphere and corona have been studied. \noindent Gravitational settling in the chromosphere may lead to a depletion in the abundances of minor elements in the solar wind relative to the photosphere. The observed overabundance (relative ...

    • Modeling iron abundance anhancements in the slow solar wind. 

      Byhring, Hanne Sigrun; Cranmer, S.R.; Lie-Svendsen, Øystein; Habbal, S. Rifai; Esser, Ruth (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      We have studied the behavior of Fe ions in the slow solar wind, using a fluid model extending from the chromosphere to 1 AU. Emphasis is on elemental "pileup" in the corona, i.e., a region where the Fe density increases and has a local maximum. We study the behavior of individual Fe ions relative to each other in the pileup region, where Fe(+10) and Fe(+12) have been used as examples. We find that ...

    • A theoretical study of the coupling between minor ions and protons in the solar transition region 

      Byhring, Hanne Sigrun (Master thesis; Mastergradsoppgave, 2007-06-01)
      We have used a numerical model to calculate the flow velocities of six minor ion species, using two different background models for the fast solar wind, one with a slow expansion, and one with a very rapidly expanding geometry. By comparing the flow velocity of the minor ions and the protons, we have investigated the degree of coupling between minor ions and the background solar wind in the solar ...