Sökning: "dust"

Visar resultat 1 - 5 av 323 avhandlingar innehållade ordet dust.

  1. 1. Evaluation of Dust Suppressants for Gravel Roads: Methods Development and Efficiency Studies

    Författare :Karin Oscarsson; Karin Edvardsson; Andrew Dawson; Björn Birgisson; Högskolan Dalarna; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gravel road; dust; particulate matter; PM10; horizontal dust diffusion; deteriorations; maintenance; dust control; dust suppressants; efficiency; application rate; leaching; residual concentration; seasonal variations; salt solution; solid salt; calcium chloride; magnesium chloride; lignosulphonate; polysaccharide sugar ; bitumen emulsion; rape oil; starch; surfactant; mesa; clay; fine material content.; Komplexa system - mikrodataanalys; fine material content;

    Sammanfattning : Application of the proper dust suppressant to a gravel road ensures road safety and riding comfort as well as creating a cleaner and healthier environment for residents in buildings adjacent to the road. It also reduces the need and cost for vehicle repair, road maintenance activities, and aggregate supplementation. LÄS MER

  2. 2. Sampling Cyclones for Respirable Dust

    Författare :Göran Lidén; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Collection efficiency; Aerosol; Cyclone; Dust; Exposure; Optimisation; Penetration; Performance; Respirable dust; Sampling; Environmental technology; Standardisation; pollution control; Miljöteknik; kontroll av utsläpp;

    Sammanfattning : The performance of cyclones used in occupational hygiene for sampling respirable dust was studied. Test methods for experimental determination of cyclone penetration have been designed and validated. The penetration curve for a sampling cyclone presently used in Europe was measured. LÄS MER

  3. 3. Non-Exhaust PM10 and Road Dust

    Författare :Joacim Lundberg; Sigurdur Erlingsson; Mats Gustafsson; Sara Janhäll; Göran Blomqvist; Brynhild Snilsberg; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Road Dust; Abrasion Wear; Road Surface Macro Texture; Mean Profile Depth; Mean Texture Depth; Emissions; Abrasion Wear Model; NORTRIP; PM10; Air Quality; Particles; Vägdamm; Vägslitage; Dubbslitage; Textur; Emissioner; Slitagemodell; NORTRIP; PM10; Partiklar; Luftkvalitet; Civil and Architectural Engineering; Byggvetenskap; Dust; Inhalable particle; Pavement; Tyre; Wear; Abrasion; Health; 15 Road: Environment; 15 Road: Environment;

    Sammanfattning : Non-exhaust PM10 is an issue in the urban environment linked to health issues. Emissions of non-exhaust PM10 is relatable to pavement properties. Also of importance is resuspension of road dust stored from surfaces. This depends on the traffic and metrological conditions. LÄS MER

  4. 4. Controlled dust separation : theoretical and experimental study of the possibilities of controlled dust separation in copper producing processes

    Författare :Caisa Samuelsson; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Sammanfattning : Dust is generated in high temperature processes, such as incineration plants, power plants and within the metallurgical industry. The amount of dust generated, chemical and mineralogical composition of the dust as well as physical properties will largely depend on the process generating the dust but also on the off gas system used. LÄS MER

  5. 5. Dust suppressants for Nordic gravel roads

    Författare :Karin Oscarsson; Ulf Isacsson; Sven Knutsson; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gravel roads; dust suppressants; objective methods; residual concentrations; dust generating device; Building engineering; Byggnadsteknik;

    Sammanfattning : This licentiate thesis is part of a Ph.D. project entitled “CDU:T43 Different methods for dust control and evaluating dust control on Nordic gravel roads”. The Ph. LÄS MER