Sökning: "smoke"

Visar resultat 1 - 5 av 193 avhandlingar innehållade ordet smoke.

  1. 1. Phenolic Antioxidants in Wood Smoke

    Författare :Jennica Kjällstrand; Chalmers University of Technology; []
    Nyckelord :smoke; benzene; methoxyphenols; antioxidants; wood; lignin; combustion; biomass;

    Sammanfattning : Smoke from residential wood burning constitutes a complex mixture of organic compounds with varying environmental and health effects. This thesis focuses on antioxidants and aromatic hydrocarbons emitted from small-scale burning. LÄS MER

  2. 2. Methoxyphenols in smoke from biomass burning

    Författare :Jennica Kjällstrand; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lignin; antioxidants; biomass; wood; methoxyphenols; combustion; smoke;

    Sammanfattning : .... LÄS MER

  3. 3. Smoke control in tunnels : ventilation using mobile fans

    Författare :Mia Kumm; Erik Dahlquist; Haukur Ingason; Mats Sandberg; Mälardalens högskola; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP; Energi- och miljöteknik;

    Sammanfattning : .... LÄS MER

  4. 4. Spread of smoke and fire gases via the ventilation system

    Författare :Polina Gordonova; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; compartment fires; fire flow; fire pressure; fire simulation; smoke spread; ventilation ducts; brandteknik; brand; brandspridning; rökspridning; ventilation; ventilationskanaler; beräkningsmodeller; datorprogram; simulering; teori;

    Sammanfattning : This thesis examines the problem of smoke spread via ventilation ducts to adjacent room(s) in case of a compartment fire. The main goal is to examine the possibility of operating the fans during different fires in four types of buildings (compartments, hospitals, offices and hotels) and to estimate the risk of smoke spread in different conditions.. LÄS MER

  5. 5. Meteoric Aerosols in the Middle Atmosphere

    Författare :Linda Megner; Jörg Gumbel; Martin Ridal; Gary E. Thomas; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; meteoroid; meteor; nucleation; mesosphere; stratosphere; ablation; smoke; NLC; PMSE; PSC; Atmosphere and hydrosphere sciences; Atmosfärs- och hydrosfärsvetenskap; atmosfärvetenskap; Atmospheric Sciences;

    Sammanfattning : This thesis concerns the fate of the meteoric smoke in the Middle Atmosphere, and its effect on ice phenomena such as noctilucent clouds (NLC) and polar stratospheric clouds (PSC). The potential role of NLC as tracer for mesospheric processes and variability, and as a tool for monitoring this remote and inaccessible region, has generated substantial interest within the scientific community. LÄS MER