Sökning: "volatile"

Visar resultat 16 - 20 av 461 avhandlingar innehållade ordet volatile.

  1. 16. Volatile Fatty Acids as a Key to Sustainability and Circularity in Polyhydroxyalkanoates Production

    Författare :Hoang Danh Vu; Dan Åkesson; Pau-Loke Show; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bioplastics; food waste; polyhydroxyalkanoates; volatile fatty acids; immersed membrane bioreactor; acidogenic fermentation; Resource Recovery; Resursåtervinning;

    Sammanfattning : The negative consequences of plastic pollution on both environmental and socio-economic aspects have motivated the development of sustainable and renewable materials to replace the petroleum-based plastic. Polyhydroxyalkanoates (PHAs), which are bioplastics, having an outstanding biodegradability and rather comparable thermal and mechanical properties, are potential alternatives for the replacement of conventional plastics. LÄS MER

  3. 17. Determination of Volatile Hydrocarbons in Urban Air

    Författare :Lars Löfgren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; arenes; hydrocarbons; environment; alkenes; motor traffic; photochemical oxidant formation;

    Sammanfattning : In the complex hydrocarbon mixture in urban air, the alkenes and arenes are of particular interest with respect to impact on health and environment. Knowledge of hydrocarbon concentrations in urban air is essential for the assessment and prevention of health hazards and photochemical oxidant formation. LÄS MER

  4. 18. Developing a food waste-based volatile fatty acids platform using an immersed membrane bioreactor

    Författare :Steven Wainaina; Jukka Rintala; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; food waste; anaerobic digestion; volatile fatty acids; immersed membrane bioreactor; edible filamentous fungi; Resource Recovery; Resursåtervinning;

    Sammanfattning : Approximately 1.3 billion tons of food waste is produced globally every year. In principle, all the resources in the supply chain are lost (e.g. LÄS MER

  5. 19. Volatile anesthetic agents and hypoxic ventilatory responses in humans

    Författare :Dick Sjögren; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :anesthesia; volatile; isoflurane; sevoflurane; isocapnia; poikilocapnia; human; hypoxic ventilatory response;

    Sammanfattning : Control of breathing in humans is regulated through a network of different nervous and chemical mechanisms, in the central nervous system as well as in peripheral structures. One important stimulus for this control is the decrease in arterial oxygen tension, PaO2, in blood, which leads to an increased ventilation. LÄS MER

  7. 20. Alkylate Petrol. Environmental Aspects of Volatile Hydrocarbon Emissions

    Författare :Ulf Östermark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; hydrocarbons; small engines; alkylate; alkenes; ethene; benzene; 3-butadiene; two-stroke engines; reformulated petrol; reformulated gasoline; 1;

    Sammanfattning : All hydrocarbons emitted from production and use of petrol are hazardous to human health and the environment, but to a different extent for individual compounds. This thesis compares and characterizes C2-C8 hydrocarbons related to alkylate petrol and conventional petrol. LÄS MER