Sökning: "Björn Jönsson"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Björn Jönsson.

  1. 1. On leg ischaemia : aspects of epidemiology and diagnostics

    Författare :Björn Jönsson; Eric Wahlberg; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : The first part of this thesis consists of a population-based epidemiological study on symptomatic leg arterial disease in a Swedish community, based on a postal questionnaire and systolic ankle pressure measurements, with calculation of the ankle-brachial pressure index (ABPI; usually ≥ 1.0 in healthy subjects). LÄS MER

  3. 2. Ethanol from lignocellulose : Management of by-products of hydrolysis

    Författare :Björn Alriksson; J Leif Jönsson; Vincent Eijsink; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ethanol; Lignocellulose; Detoxification; Genetic engineering; Enzyme production; Biochemistry; Biokemi; Kemi; Chemistry;

    Sammanfattning : Fuel ethanol can be produced from lignocellulosic materials, such as residues from agriculture and forestry. The polysaccharides of lignocellulose are converted to sugars by hydrolysis and the sugars can then be fermented to ethanol using microorganisms. However, during hydrolysis a wide range of by-products are also generated. LÄS MER

  4. 3. Some Concepts of Estuarine Modeling

    Författare :Bror Jönsson; Peter Lundberg; Kristofer Döös; Björn Kjärfve; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oceanography Modeling Estuaries; Meteorology; Meteorologi;

    Sammanfattning : If an estuarine system is to be investigated using an oceanographic modeling approach, a decision must be made whether to use a simple and robust framework based on e.g. mass-balance considerations, or if a more advanced process-resolving three-dimensional (3-D) numerical model are necessary. LÄS MER

  5. 4. A Gill Filament EROD Assay : Development and Application in Environmental Monitoring

    Författare :Maria Jönsson; Ingvar Brandt; Björn Brunström; Kristian Ingebrigtsen; Håkan Olsén; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; aquatic; benzo[a]pyrene; biomarker; CYP1A; environmental monitoring; EROD; fish; gill; indigo; PCB; Biologi; Biology; Biologi;

    Sammanfattning : A gill filament-based assay for the cytochrome P450 1A (CYP1A)-catalysed activity ethoxyresorufin O-deethylase (EROD) was developed in rainbow trout (Oncorhynchus mykiss) and applied to Atlantic salmon (Salmo salar), Arctic charr (Salvelinus alpinus), Atlantic cod (Gadus morhua), saithe (Pollachius virens), and spotted wolffish (Anarhichas minor). Exposure to waterborne β-naphthoflavone (βNF; 10-6 M) induced branchial EROD activity in all species but the spotted wolffish. LÄS MER

  7. 5. Bedömning för lärande i ämnet idrott och hälsa : didaktiska konsekvenser av styrning

    Författare :Björn Tolgfors; Christer Eriksson; Anders Jönsson; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bedömning för lärande; formativ bedömning; governmentalityanalys; didaktisk analys; praktiknära forskning; idrott och hälsa; Sports Science; Idrottsvetenskap;

    Sammanfattning : The purpose of this study is to investigate the impact of assessment for learning (AFL) in upper secondary PE, in terms of governance and its possible consequences for the subjects in the teaching and learning triangle (the teacher, the student) and the subject content. The study is conducted in three steps: i) How do a group of PE-teachers describe their ways of realizing assessment for learning in their teaching practice? ii) How can their reflections about AFL be understood from a governmentality perspective? iii) Depending on what forms of governance that are dominant in the teachers’ reflections about AFL, different consequences can be argued in the triadic relation between the teacher, the student and the subject content. LÄS MER