Sökning: "Hygroscopic Growth"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Hygroscopic Growth.

  1. 1. Hygroscopic Growth of Atmospheric Aerosol Particles and Its Relation to Nucleation Scavenging in Clouds

    Detta är en avhandling från Division of Nuclear Physics, Lund University, Box 118, S-221 00 Lund, Sweden

    Författare :Birgitta Svenningsson; Lunds universitet.; Lund University.; [1997]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aerosol formation; atmospheric aerosols; hygroscopic growth; nucleation scavenging; cloud; water activity; external mixing; tandem differential mobility analyser; Kärnfysik; cloud condensation nuclei spectra; Nuclear physics; TDMA; Fysicumarkivet A:1997:Svenningsson; inorganic salts;

    Sammanfattning : Aerosol particles in the atmosphere are important in several aspects. Some major aerosol constituents that are deposited in ecosystems are acidic or fertilisers and some minor or trace constituents are toxic. LÄS MER

  2. 2. Hygroscopic Properties of Atmospheric Aerosol Particles in Various Environments

    Detta är en avhandling från Division of Nuclear Physics, PO Box 118, S-221 00 Lund, Sweden

    Författare :Jingchuan Zhou; Lunds universitet.; Lund University.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tandem differential mobility analyser TDMA ; internal and external mixture; closure study; GDF95; AOE-96; Fysik; Physics; Kärnfysik; Nuclear physics; ACE-2; CLAIRE98; differential mobility particle sizer DMPS ; atmospheric aerosol particles; hygroscopic growth; Fysicumarkivet A:2001:Zhou;

    Sammanfattning : Atmospheric aerosol particles affect our living environment in many ways. Their effects are influenced by the interaction between the aerosol particles and the ubiquitous water vapour. The number-size distribution is a primary important parameter for aerosol particles and can be measured using the differential mobility particle sizer (DMPS). LÄS MER

  3. 3. Hygroscopic Properties of Aerosols from Open-Air Burning and Controlled Combustion of Biomass

    Detta är en avhandling från Division of nuclear physics, Department of Physics, Lund University

    Författare :Jenny Rissler; Lunds universitet.; Lund University.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cloud condensation nuclei; H-TDMA; CCN; hygroscopic growth; Teknik; internal and external mixture; CLAIRE; SMOCC; Physics; Fysik; Environmental chemistry; Technological sciences; Miljökemi; tandem differential mobility analyzer; slash and burn; Amazon; Biomass burning; combustion; Fysicumarkivet A:2005:Rissler;

    Sammanfattning : The major uncertainty in predicting the influence of human activities on global climate change is the effect of aerosols. Two physical properties of aerosols largely controlling their influence on climate are the particle number size distribution and the interaction of the particles with the surrounding water vapor. LÄS MER

  4. 4. Fine and Ultrafine Particles from Combustion Sources - Investigations with In-situ Techniques

    Detta är en avhandling från Division of Ergonomics and Aerosol Technology, Department of Design Sciences Lund University

    Författare :Joakim Pagels; Lunds universitet.; Lund University.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pollution control; Environmental technology; Teknik; Technological sciences; Indoor Air; In-Situ Measurement; Biomass Combustion; Morphology; Hygroscopic Growth; Volatility; TDMA; APS; ELPI; Respiratory Deposition; Fine Particles; Miljöteknik; kontroll av utsläpp; Ultrafine Particles;

    Sammanfattning : Popular Abstract in Swedish Det finns samband mellan halten av små luftburna partiklar och negativa hälsoeffekter i befolkningen. Målsättningen med avhandlingen var att utveckla och utvärdera metoder för in-situ karakterisering av fina (< 1 um) och ultrafina (... LÄS MER

  5. 5. Fracture behaviour of Green Wood (Pinus Sylvestris L.) : a composite materials approach

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Fredrik Thuvander; [1998]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymeric Composite Materials; Polymera konstruktionsmaterial;

    Sammanfattning : The fracture behaviour of green wood has been investigated using a composite materials approach. Through fracture experiments on miniature specimens, it was found that drying of wood leads to damage not only on the macro-level but also at the scale of the cell wall. LÄS MER