Sökning: "Breath"

Visar resultat 11 - 15 av 155 avhandlingar innehållade ordet Breath.

  1. 11. Oropharyngeal origin of markers in exhaled breath

    Författare :Helena Marteus; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Exhaled nitric oxide; exhaled breath condensate; saliva; nitrite; nitrate; ammonia; pH; bacteria;

    Sammanfattning : Normal NO formation in the human airways occurs primarily in the nasal airways, where it is catalyzed by inducible NO synthase (iNOS), and in the oropharyngeal tract, via as yet not fully defined pathways. This NO can be detected in exhaled breath and when inflammation is present in the airways, for example in asthma, the concentration of NO is increased. LÄS MER

  3. 12. New Instrumentation for Forensic Applications : Automatic Fiber Detection and Breath Alcohol Measurements

    Författare :Nils Paulsson; Peter Wide; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Two forensic instruments have been developed and evaluated with respect to basic characteristics. One instrument is used for automatic fiber detection and the other for breath alcohol measurement. LÄS MER

  4. 13. Exhaled Breath Condensate in Obstructive Lung Diseases : A Methodological study

    Författare :Anette Davidsson; Birgitta Schmekel; Rolf Andersson; Sven‐Erik Dahlén; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Asthma and chronic obstructive pulmonary disease (COPD) are two common inflammatory airway diseases characterized by airway inflammation and mucus hypersecretion. Prediction of the outcome of these diseases may not be performed and the need for non-invasive diagnostic tools capable of identifying inflammation in asthma and COPD becomes therefore obvious. LÄS MER

  5. 14. Biokinetics and radiation dosimetry of 14C-labelled triolein, urea, glycocholic acid and xylose in man. Studies related to nuclear medicine “breath tests” using accelerator mass spectrometry

    Författare :Mikael Gunnarsson; Malmö Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering; Kärnfysik; Nuclear physics; xylose.; glycocholic acid; urea; triolein; Dosimetry; Biokinetic; AMS; Accelerator mass spectrometry; 14C; Breath test;

    Sammanfattning : 14C-labelled substances have been used in biomedical research and clinical medicine for over 50 years. Physicians and scientists however, often hesitate to use these substances in patients and volunteers because the radiation dosimetry is unclear. LÄS MER

  7. 15. Respiratory drive assessment : an evaluation of the breath-by-breath occlusion pressure method in man

    Författare :Lars Gösta Hellström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : A simplified concept of respiratory drive is to consider it as the integrated "output" from the CNS to the respiratory "pump" muscles. This drive is a result of a complex central respiratory pattern generation, and can in abnormal situations, e.g. of pathological or pharmacological origin, be altered. LÄS MER