Sökning: "irritants"

Visar resultat 6 - 10 av 31 avhandlingar innehållade ordet irritants.

  1. 6. Examining neurobehavioral effects of chemosensory exposure to local irritants using event related potentials

    Författare :Stephanie Anja Juran; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The aim of this thesis was to examine whether unpleasant odors disturb cognitive task performance. At first glance, it seems intuitive that for example the smell of fire smoke would immediately interrupt my current writing at the computer. LÄS MER

  3. 7. Exploring small airways using breath analyses

    Författare :Emilia Viklund; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; exhaled particles; small airways; alveolar nitric oxide; SARS-CoV-2; birch pollen; smoking; lining fluid;

    Sammanfattning : Background: Airway irritants such as allergens, tobacco smoke and viruses may cause damage in the small airways, usually undetected with routine diagnostic methods. Analyses of endogenously produced nitric oxide (NO) and endogenously produced small droplets (i.e. LÄS MER

  4. 8. The Role of Odor and Sensory Irritation in Human Chemical Sensitivity

    Författare :Li Zheng; Birgitta Berglund; Staffan Hygge; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Odor and irritation detection; recognition; threshold; choice theory; intensity; chemical sensitivity; threshold; and sensitivity index.; Psychology; Psykologi; Psychology; psykologi;

    Sammanfattning : The main objective of this thesis is to apply complimentary psychophysical theories and methods to investigate human perception of odor and sensory irritation of chemical compounds present in indoor air. Three psychophysical theories: Signal Detection Theory (SDT), Threshold Theory and Luce’s Choice Theory (CT) were applied to measure detection and recognition of odor and sensory irritation of two odorous irritants (pyridine and formaldehyde) by using the method of constant stimuli. LÄS MER

  5. 9. Skin exposure from wood surface coating work at the UV-radiation curing lines

    Författare :Jouni Surakka; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Work Environment; Industriell produktionsmiljö;

    Sammanfattning : The use of ultraviolet radiation curable coatings (UV-coatings) has increased rapidly in the furniture and parquet industry. Wood surface coating work at the UV-radiation curing lines involves risk from skin exposure to damaging UV-radiation and to harmful compounds in UV-coatings. LÄS MER

  7. 10. Aerosols of Isocyanates, Amines and Anhydrides : Sampling and Analysis

    Författare :Jakob Dahlin; Gunnar Skarping; Robert P. Streicher; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; isocyanate; amine; aminoisocyanate; organic acid anhydride; denuder; impactor; impinger; air sampling; LC-MS; LC-CLND; di-n-butylamine; DBA; thermal degradation; aerosol; particles; TDI; MDI; HDI; ICA; MIC; IPDI; exposure; occupational health; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Sammanfattning : This thesis presents methods for air sampling and determination of isocyanates, amines, aminoisocyanates and anhydrides. These organic compounds are generated during thermal degradation of polymers such as polyurethane (PUR) or epoxy.Isocyanates, amines and anhydrides are airway irritants known to cause occupational asthma. LÄS MER