Search for dissertations about: "Air classification"

Showing result 1 - 5 of 29 swedish dissertations containing the words Air classification.

  2. 1. AIR CLASSIFICATION OF FINE AGGREGATES

    Author : Robert Johansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; Fines; Manufactured sand; Aggregates; Air classification; Concrete;

    Abstract : Aggregates are defined as particles of rock which in combination are used as a civil engineering material. It is used in bounded form in asphalt and concrete. Historically natural sand has been used as fine aggregates for concrete production in Sweden. READ MORE

  4. 2. Dry Classification of Fine Aggregates for Concrete and Asphalt

    Author : Robert Johansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; concrete; asphalt; classification; aggregate;

    Abstract : Aggregate is defined as particles of rock which in combination are used as a civil engineering material. It is used in bounded form in asphalt and concrete. Historically natural sand has been used as fine aggregate for concrete production in Sweden. READ MORE

  5. 3. Air mass boundary identification : improvement of precipitation phase determination in surface based modeling

    Author : James Feiccabrino; Per-Erik Jansson; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Abstract : Snowpack properties derived from hydrological models play an important role for many ecological, water resource, and climate applications; such as winter survival of plants, reindeer, small mammals and birds, avalanche hazards, glaciers and polar ice accumulation, growth of sea and lake ices, climate change, snow melt flooding etc. These hydrological models need accurate precipitation phase discrimination schemes to closely portray e. READ MORE

  6. 4. Performance-based design of ventilation systems. Potential and limitations regarding indoor air quality

    Author : Ragib Kadribegovic; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ventilation; prescriptive design; indoor air quality; air cleaning; energy efficiency; performance-based design; recirculation;

    Abstract : It has been increasingly common to design for increased ventilation rates above legislative requirements specified in building codes and other norms as the most optimum way to improve indoor air quality. However, this concept has recently been challenged, for example, by studies demonstrating that the emissions or pollution from used traditional particle filters increases proportionally with air flow through the filter. READ MORE

  7. 5. On urban air pollution measurements : analysis for identification and classification of sources

    Author : Peter Molnár; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Vertical gradients; sulphur; pm2.5; tsp; ultra fine particles; particle size distribution; air mass trajectories; traffic emissions; dmps; edxrf;

    Abstract : .... READ MORE