Sökning: "QUARTZ"

Visar resultat 1 - 5 av 300 avhandlingar innehållade ordet QUARTZ.

  1. 1. Silicon and Quartz Microengineering : Processing and Characterisation

    Författare :Örjan Vallin; Peter Enoksson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; silicon; quartz; microengineering; microstructure; MEMS; wafer bonding; direct bonding; adhesion quantification; Teknisk fysik; Engineering physics; Teknisk fysik;

    Sammanfattning : Microengineering has developed a broad range of production techniques to reduce size, increase throughput, and reduce cost of electrical and mechanical devices. The miniaturisation has also entailed entirely new opportunities. LÄS MER

  3. 2. Transport of Radionuclides and Colloid Through Quartz Sand Columns

    Författare :Birgit Christiansen-Sätmark; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transport; radionuclides; Goethite column experiments; sorption; Quartz; colloid;

    Sammanfattning : Studies of the transport of radionuclides in the geosphere are one of the main tasks for performance assessment of a nuclear waste repository. A possible enhanced transport path for the radionuclides is the formation and transport of non-depositing colloids with a high affinity for radionuclides. LÄS MER

  4. 3. Quartz in Swedish iron foundries : exposure and cancer risk

    Författare :Lena Andersson; Håkan Westberg; Gunilla Lindström; Per Gustavsson; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Case-control study; crystalline silica; exposure assessment; iron foundry; lung cancer; morbidity; occupational hygiene; respirable quartz; Enviromental Science; Miljövetenskap;

    Sammanfattning : The aims of the studies underlying this thesis were to assess the exposure to quartz in Swedish iron foundries and to determine the cancer morbidity for Swedish foundry workers. A cohort of 3,045 foundry workers and a final measurement database of 2,333 number of samples was established. LÄS MER

  5. 4. From Silicon to Quartz : Microstructure Technology Transfer for Increased Frequency Stability

    Författare :Örjan Vallin; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Layer Formation on Bed Particles during Fluidized Bed Combustion and Gasification of Woody Biomass

    Författare :Hanbing He; Marcus Öhman; Kent Davidsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; layer formation; bed particle; woody biomass; quartz; K-feldspar; olivine; bed agglomeration; deposition; fluidized bed; combustion; gasification; Energiteknik; Energy Engineering;

    Sammanfattning : Although more than a hundred papers dealing with the agglomeration problem in combustion and gasification of biomass can be found in the literature, very few studies focusing on the bed particle layer formation process in fluidized bed combustion (FBC) and fluidized bed gasification (FBG) can be found. With increased knowledge of the bed particle layer formation process — i. LÄS MER