Sökning: "Malin Jonsson"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Malin Jonsson.

  1. 1. Short-Pulse Photofragmentation and Fluorescence-based Diagnostics - Development and Applications

    Författare :Malin Jonsson; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Hydroxyl radical OH ; Short-pulse excitation; Photofragmentation; Combustion diagnostics; Laser-induced fluorescence; Hydrogen peroxides; Collisional quenching; Fysicumarkivet A:2015:Jonsson;

    Sammanfattning : The work presented in the thesis covers the use of laser-induced fluorescence (LIF) and photofragmentation laser-induced fluorescence (PFLIF) with short laser pulses to determine species concentrations in different combustion environments. To attain quantitative species concentrations using LIF investigations of the influence of collisional quenching on the fluorescence signal strength is of vital importance, which can be done by measuring the fluorescence lifetime. LÄS MER

  3. 2. Development of fluorescence-based techniques for quantitative measurements of combustion species

    Författare :Malin Jonsson; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The work presented in this thesis covers how laser-induced fluorescence (LIF) and photofragmentation laser-induced fluorescence (PF-LIF) can be used to determine quantitative species concentrations in different combustion environments. To attain species concentrations with LIF it is of vital importance to investigate the influence of collisional quenching on the fluorescence signal strength, which can be done by measuring the fluorescence lifetime. LÄS MER

  4. 3. Nicotinic transmission and drugs in anesthesia : neuromuscular blocking agents and propofol : consequences for carotid body function

    Författare :Malin Jonsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Carotid body; chemoreceptors; neuromuscular blocking agents; propofol; acetylcholine; nicotinic acetylcholine receptors;

    Sammanfattning : The carotid body is the global oxygen sensor of the human body. Acute hypoxia elicits instant hyperventilation mediated from the carotid body type 1 cells, where nicotinic transmission is a key component in oxygen sensing and signalling. LÄS MER

  5. 4. Physiological and biomechanical aspects of rifle carriage during biathlon skiing

    Författare :Malin Jonsson Kårström; Marko Laaksonen; Kerry McGawley; Guillaume Millet; Mittuniversitetet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 3D-measurement; anaerobic energy contribution; crosscountry skiing; kinematics; lactate threshold; load carriage; oxygen uptake; performance; sex differences; sub-techniques; training;

    Sammanfattning : Biathlon is an endurance-based winter sport that combines crosscountry (XC) skiing with rifle marksmanship. While skiing, biathletes carry the rifle (weighing ≥ 3.5 kg) on their backs. However, research regarding the effects of rifle carriage in biathlon is lacking. LÄS MER

  7. 5. Hur undervisning och guidade naturvetenskapliga undersökningar kan stödja elevers kreativitet

    Författare :Malin Jonsson; Leif Östman; Malena Lidar; Jesus Piqueras Blasco; Uppsala universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; naturvetenskaplig undervisning; fysikundervisning; naturvetenskapliga undersökningar; högstadiet no-undervisning; kreativitet; engagemang; PEA; didaktik explorativ studie; Curriculum Studies; Didaktik;

    Sammanfattning : The use of guided instructions are often debated in science education research, but nevertheless often used in lower secondary school. The aim of this licentiate thesis is to contribute to knowledge about science education in lower secondary school when pupils’ do lab work using guided instructions. LÄS MER