Sökning: "Fluid inclusions"

Visar resultat 1 - 5 av 29 avhandlingar innehållade orden Fluid inclusions.

  1. 1. Fluid Flow Phenomena, Inclusion Characteristics and some Heat Transfer Phenomena during Filling of an Ingot Mmold

    Detta är en avhandling från Stockholm : Materialvetenskap

    Författare :Robert Eriksson; KTH.; [2003]
    Nyckelord :up-hitt teeming; model powder; inclusions; plant trials; thermal diffusivity; fluid flow; physical modeling;

    Sammanfattning : Clean steel production requires a good understanding of theinclusion characteristics at all stages of the steelmakingprocess. So far there exist little information about theformation and evolution of inclusions during the filling ofingot molds. LÄS MER

  2. 2. Single fluid inclusion analysis using ToF-SIMS Implications for ancient Earth biodiversiy and paleoenvironment studies

    Detta är en avhandling från Stockholm : Department of Geological Sciences, Stockholm University

    Författare :Sandra Siljeström; Stockholms universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ToF-SIMS; time-of-flight secondary ion mass spectrometry; fluid inclusions; biomarkers; hopanes; steranes; early life; paleoenvironment; oil; eukaryotes; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap; Geochemistry; geokemi;

    Sammanfattning : When and how life first emerged on the Earth is an area of intense research. Signs of the first life on Earth, including morphological fossils, are scarce and hard to interpret. An alternative approach is to study organic biomarkers, which are molecular fossils commonly considered as bona fide biosignatures. LÄS MER

  3. 3. Growth and removal of inclusions during ladle refining

    Detta är en avhandling från Stockholm : Materialvetenskap

    Författare :Mats Söder; KTH.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; inclusions; steel; ladle; cluster growth; modelling; Meteorologi; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences Meteorology; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap Meteorologi;

    Sammanfattning : The overall purpose of this thesis work has been to further our understanding of the growth and removal of inclusions in gas- and induction-stirred ladles. The primary focus has been on alumina inclusions.Growth mechanisms were studied using data from fundamental mathematical models of gas- and induction-stirred ladles. LÄS MER

  4. 4. Superoxide dismutase 1 and amyotrophic lateral sclerosis

    Detta är en avhandling från Umeå : Medicinsk biovetenskap

    Författare :P. Andreas Jonsson; Umeå universitet.; Umeå universitet.; Umeå universitet.; [2005]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; aggregates; ALS; amyotrophic lateral sclerosis; cerebrospinal fluid; disulfide-reduced; inclusions; misfolded; protective factor; SOD1; transgenic; Neurovetenskap; MEDICINE Dermatology and venerology; clinical genetics; internal medicine Internal medicine Neurology; MEDICIN Dermatologi och venerologi; klinisk genetik; invärtesmedicin Invärtesmedicin Neurologi; Clinical Chemistry; klinisk kemi;

    Sammanfattning : Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease affecting motor neurons in the spinal cord, brain stem and motor cortex, leading to paralysis, respiratory failure and death. In about 5% of ALS cases, the disease is associated with mutations in the CuZn-superoxide dismutase (hSOD1) gene. LÄS MER

  5. 5. Heat transfer,inclusion characteristics and fluid flow phenomena during up-hill teeming

    Detta är en avhandling från Stockholm : Materialvetenskap

    Författare :Robert Eriksson; KTH.; [2001]
    Nyckelord :Laser flash method; thermal diffusivity; slags; inclusions; water model; ingot casting; up-hill teeming;

    Sammanfattning : Clean steel production requires good control of the sizedistribution and the composition of the inclusions at allstages of the steel making process. So far, there exists verylittle information on the behavior of the inclusion populationduring ingot casting of steel. LÄS MER