Search for dissertations about: "thawing"

Showing result 6 - 10 of 91 swedish dissertations containing the word thawing.

  2. 6. Soil behavior at freezing and thawing

    Author : Sven Knutsson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Abstract : Avhandlingens första del behandlar en teoretisk beräkningsmodell för tjällyftning samt studier av dess noggranhet i olika situationer. Tjällossningsförloppet analyseras och studeras genom noggranna mätningar av porvattentryckens fördelning i tid och rum. READ MORE

  4. 7. Heat and water flows in freezing and thawing soils : numerical modelling, laboratory and field observations

    Author : Helén Engelmark; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

    Abstract : A laboratory study of infiltration rates into frozen and unfrozen fine sand, including temperature effects of both soil and infiltration water, is reported. The average infiltration rate varied from about 10.6 mm/min for unfrozen conditions, to about 1-2 mm/min for frozen conditions. READ MORE

  5. 8. Compaction and thaw deformation of frozen soil : permeability and structural effects due to freezing and thawing

    Author : Peter Viklander; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoteknik; Soil Mechanics;

    Abstract : This thesis is the result of the two projects:"Deformations in winter compacted soils" and "Permeability changes in a fine-grained till due to freeze/thaw". The aim of the first project was to study whether it is possible to compact frozen soils, in road embankments etc. READ MORE

  6. 9. Use of chemical denitrification for nitrogen removal from landfill leachates

    Author : Aleksandra Nikolic; KTH; []
    Keywords : Chemical denitrification; conductivity; evaporation drying; freezing thawing; leachate; nitrogen removal;

    Abstract : Landfill leachate usually has a high concentration ofammonium nitrogen and heavy metals, but too low alkalinitycontent for full biological nitrification, as well as a too lowconcentration of biologically degradable organic carbon forbiological denitrification, and at the same time very variablecomposition (quantity and quality) with time. These factorsresult in serious problems for treating leachate with existingsystems. READ MORE

  7. 10. Investigation of the Freeze-Thawing Process for Pharmaceutical Formulations of a Model Protein

    Author : Anna Hillgren; Jörgen Tegenfeldt; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; Physical and Inorganic Pharmaceutical Chemistry; fysikalisk och oorganisk farmaceutisk kemi;

    Abstract : Recent advances in recombinant DNA technology have resulted in a great number of proteins with a potential to enter pharmaceutical formulations. The most commonly used method for preparing protein pharmaceuticals is by freeze-drying. READ MORE