Sökning: "volatile"
Visar resultat 1 - 5 av 457 avhandlingar innehållade ordet volatile.
1. Flyktiga möten : Fågelskådning, epistemisk gemenskap och icke-mänsklig karisma
Sammanfattning : This thesis investigates birdwatching and focuses on the knowledges, skills and ideas that are obtained and acknowledged among birdwatchers. The aim is to explore how these ways of relating to birds are constituted. Birdwatching is considered as an epistemic practice, which produce and maintain knowledge. LÄS MER
2. Ethanol from woodCellulase enzyme production
Sammanfattning : Conversion of biomass to liquid fuels, such as ethanol, has been investigated during the past decades. First due to the oil crisis of the 1970s and lately because of concerns about greenhouse effect, ethanol has been found to be a suitable substitute for gasoline in transportation. LÄS MER
3. Thin films for indoor air monitoring : Measurements of Volatile Organic Compounds
Sammanfattning : Volatile organic compounds (VOCs) in the indoor air have adverse effects on the dwellers residing in a building or a vehicle. One of these effects is called sick building syndrome (SBS). LÄS MER
4. Aroma characterisation and retention after heat treatment and drying of fruits using extraction and GC-MS analysis
Sammanfattning : This study concerns the identification and characterisation of volatile components of fruits, and evaluation of the effect of heat treatment and drying on retention or loss of volatiles of fruits. The investigation included developing a procedure to extract volatile components from the fruit matrix, a purification step, separation, identification and quantification. LÄS MER
5. Volatile organic compounds from microorganisms : identification and health effects
Sammanfattning : Damp building materials are subjected to degradation processes due to moisture and also microbial growth, with both of these giving rise to emissions of volatile organic compounds (VOCs) that may contribute to indoor air health problems. The overall aim of this thesis was to investigate emissions of reactive and non-reactive VOCs from damp building materials and from the microorganisms growing on them, and also to investigate the possible health impact of these compounds. LÄS MER