Sökning: "in situ observation"

Visar resultat 16 - 20 av 61 avhandlingar innehållade orden in situ observation.

  1. 16. Novel catalysts development for NOx reduction from H2 combustion engines

    Författare :Jieling Shao; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H2-SCR; SSZ-13 zeolite; in-situ DRIFTS; Iridium; Nitrogen selectivity; Platinum; reduction pretreatment; temperature intervals; BETA zeolite; Palladium;

    Sammanfattning : Hydrogen, as a clean energy carrier, burns without producing any carbon emissions. Hydrogen internal combustion engines (H2-ICE) are considered an alternative for the transition from conventional fossil-fuel vehicles. LÄS MER

  3. 17. Role of macrophage receptor MARCO in host defense

    Författare :Marko Sankala; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MARCO; innate immunity; scavenger receptor.;

    Sammanfattning : Innate immunity, the first line of defense against infectious microorganisms, appeared early in evolution. Innate immunity relies on specialized cells such as macrophages that are the first to encounter pathogens during infection. LÄS MER

  4. 18. Vegetation Observation in the Big Data Era : Sentinel-2 data for mapping the seasonality of land vegetation

    Författare :Zhanzhang Cai; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sentinel-2; Times-series analysis; Phenology; GPP;

    Sammanfattning : Using satellite remote sensing data for observing vegetation seasonality is an important approach to estimate phenology and carbon uptake of land vegetation. The successful launch of Sentinel-2B in 2017 initiated full operation of the Sentinel-2 twin satellites, and they now provide 10 - 60 m spatial resolution satellite data at 5 days temporal resolution worldwide, releasing approximately 3. LÄS MER

  5. 19. On protein oxidation, lifespan and aging in Saccharomyces cerevisiae

    Författare :Hugo Aguilaniu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; asymmetric cell division; protein oxidation; yeast; aging; signalling pathways;

    Sammanfattning : In this thesis, we have investigated the physiology of protein oxidation and its possible role in the aging of the yeast Saccharomyces cerevisiae. There are two ways to measure yeast aging. First, they can only divide a finite number of times even when all nutrients necessary for division are provided. This is replicative aging. LÄS MER

  7. 20. Towards sustainability in additive manufacturing: material and process aspects

    Författare :Tatiana Fedina; Frank Brückner; Alexander Kaplan; Fabian Riss; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Produktionsutveckling; Manufacturing Systems Engineering;

    Sammanfattning : The acceptance of additive manufacturing (AM) depends on the quality of final parts and process repeatability. Recently, many studies have been dedicated to the establishment of the relationship between the process behavior and material performance. LÄS MER