Search for dissertations about: "exhaled"

Showing result 1 - 5 of 86 swedish dissertations containing the word exhaled.

  2. 1. Analysis of Endogenous Particles in Exhaled Air

    Author : Ann-Charlotte Almstrand; Göteborgs universitet; []
    Keywords : exhaled particles; time-of-flight secondary ion mass spectrometry; OPLS; airway closure; exhaled breath condensate; glutathione;

    Abstract : Exhaled air contains non-volatile particulate material from the respiratory tract. The precise location in which exhaled particles are formed is unknown, and details on their chemical content are scarce. The aim of this work was to chemically characterize and to study the mechanisms of formation of endogenous particles in exhaled air. READ MORE

  4. 2. Exhaled markers of oxidative stress in the airways

    Author : Mona Lärstad; Göteborgs universitet; []
    Keywords : exhaled air; exhaled breath condensate; malondialdehyde; 3-nitrotyrosine; ethane; pentane; isoprene; oxidative stress; airways; inflammation;

    Abstract : Breath contains a number of different molecules, some of which may have potential use as markers for oxidative stress in the airways during chronic airway inflammation. The major objectives were to develop and validate methods for quantifying five potential exhaled markers of oxidative stress: malondialdehyde (MDA) and free 3-nitrotyrosine (3-NT) in exhaled breath condensate (EBC) and ethane, pentane and isoprene in exhaled air, and to test the applicability of the methods. READ MORE

  5. 3. Exhaled Nitric Oxide in epidemiological and experimental studies

    Author : Anna-Carin Olin; Göteborgs universitet; []
    Keywords : Nitric oxide; exhaled air; nasal nitric oxide; ozone; pulp-mill; gassings; nitrate; ; atopy; sensitization; asthma; rhinitis; bronchiolitis;

    Abstract : The overall purpose with this thesis has been to contribute to the assessment of theutility of exhaled nitric oxide (eNO) in epidemiological studies. The specific aims have been toinvestigate whether eNO increases after occupational exposure to high peaks of ozone, or afterexperimental exposure to ozone in ambient concentrations. READ MORE

  6. 4. On the Formation and Physical Behaviour of Exhaled Particles

    Author : Helene Holmgren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; breath hold; size distribution; deposition; relative humidity; tidal breathing; exhaled particles; airway closure; film droplet;

    Abstract : Aerosol particles are generated in human airways and leave the body with exhaled air. The particles originate from the respiratory tract and contain non-volatile compoundsthat potentially may be used as biomarkers for various medical conditions. To utilise any information provided by the particles, they must be characterised. READ MORE

  7. 5. Towards Improved Diagnostics and Monitoring in Childhood Asthma : Methodological and Clinical Aspects of Exhaled NO and Forced Oscillation Technique

    Author : Charlotte Heijkenskjöld Rentzhog; Malinovschi Andrei; Lennart Nordvall; Kjell Alving; Lauri Lehtimäki; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; asthma; children; exhaled NO; forced oscillation technique; airway inflammation; small airways; asthma diagnostics; Pediatrik; Pediatrics; Lungmedicin; Lung Medicine;

    Abstract : Background: Asthma is a heterogeneous disease. Diagnosis relies on symptom evaluation and lung function tests using spirometry. Symptoms can be vague. Spirometry is effort-dependent and does not reliably evaluate small airways. READ MORE