Sökning: "Absorbent"

Visar resultat 21 - 25 av 27 avhandlingar innehållade ordet Absorbent.

  1. 21. On Minor Salivary Gland Secretion

    Författare :Lars Eliasson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; age; dental plaque pH; dentures; gender; health; IgA; medication; minor salivary glands; oral dryness; saliva; salivary secretion rate;

    Sammanfattning : The overall aim of this series of studies has been to examine palatal, buccal and labial minor salivary gland secretions in relation to age and gender and other factors and conditions that could have effects on the saliva. Further aims were to analyze minor salivary gland secretions in relation to feelings of oral dryness and dental plaque pH. LÄS MER

  3. 22. HNO3-Induced Atmospheric Corrosion of Copper, Zinc and Carbon Steel

    Författare :Farid Samie; Christofer Leygraf; Carlos Arroyave; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nitric acid; deposition velocity; mass transport; air velocity; relative humidity; Chemistry; Kemi;

    Sammanfattning : The role of nitric acid (HNO3) on the atmospheric corrosion of metals has so far received little or no attention. However, the last decades of decreasing sulphur dioxide (SO2) levels and unchanged HNO3 levels in many industrialized countries have resulted in an increased interest in possible HNO3-induced atmospheric corrosion effects. LÄS MER

  4. 23. White light and x-ray digital speckle photography

    Författare :Per Synnergren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : The goals of this work were not only to develop new measuring techniques, but also to validate their performance, in terms of accuracy, spatial resolution, etc., by performing carefully chosen experiments. The measuring techniques were also to be applicable to industrial problems in production, control or product development. LÄS MER

  5. 24. A planetary chamber to investigate the thermal and water cycle on Mars

    Författare :Abhilash Vakkada Ramachandran; María-Paz Zorzano; Javier Martin-Torres; Akos Kereszturi; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mars; space chamber; ISRU; water cycle simulation; pure liquid water; habitability; heat transfer; Atmospheric science; Atmosfärsvetenskap;

    Sammanfattning : The water processes that affect the upper layers of the surface of Mars are not yet fully understood. Describing the processes that may induce changes in the water content ofthe surface is critical to determine the present-day habitability of the Martian surface,understand the atmospheric water cycle, and estimate the efficiency of future water extraction procedures from the regolith for In-Situ-Resource-Utilization (ISRU). LÄS MER

  7. 25. CO2 electrochemical reduction: Techno-economic evaluation and experimental research for producing methanol

    Författare :Fangfang Li; Xiaoyan Ji; Joakim Lundgren; Klas Engvall; Hailong Li; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiteknik; Energy Engineering;

    Sammanfattning : Recently, CO2 electrochemical reduction (CO2R) has gained popularity, to cope with the strict environmental rules on greenhouse gas emissions, and to convert CO2 to value-added chemicals/fuels. Ionic liquids (ILs) have been considered as potential media for CO2R owing to their multi-functions in enhancing CO2R solubility and improving CO2R reaction rate and product selectivity. LÄS MER