Search for dissertations about: "Philip Little"

Showing result 1 - 5 of 7 swedish dissertations containing the words Philip Little.

  2. 1. Penumbra oxygen metabolism and acute neuroinflammation in ischemic stroke : MRI and PET imaging of a M2 occlusion model in rat

    Author : Philip Little; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Acute ischemic stroke (AIS) is caused by the sudden occlusion of a major artery of the brain, and results in infarction and severe ischemia within affected brain regions. If ischemic regions are rapidly revascularized, the neurological disability resulting from AIS can be significantly reduced. READ MORE

  4. 2. Thermo-Elasto-Hydrodynamic lubrication modeling of Tilting Pad Journal Bearings

    Author : Philip Croné; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Abstract : The journal bearing is a critical machine element typically used to support rotating motion in high speed machinery. Through the generation of a hydrodynamic pressure in its thin lubricant film,which is usually in the order of 10-100μmthick depending on the diameter of the journal itself, the bearing is able to withstand large loads, both statically and dynamically, while having a very low rate of wear. READ MORE

  5. 3. Holocene climate and atmospheric circulation changes in northern Fennoscandia : Interpretations from lacustrine oxygen isotope records

    Author : Christina E. Jonsson; Gunhild Rosqvist; Jan Seibert; Philip Barker; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; oxygen isotope; diatom silica; lake sediment; atmospheric circulation; North Atlantic Oscillation; northern Fennoscandia; The Holocene; Little Ice Age; Physical geography; Naturgeografi; Physical Geography; naturgeografi;

    Abstract : This thesis investigates how variations in the oxygen isotopic composition of lake waters in northern Fennoscandia are recorded in lake sediment archives, especially diatoms, and how these variations can be used to infer past changes in climate and atmospheric circulation. Results from analyses of the oxygen isotopic composition of lake water samples (δ18Olakew) collected between 2001 and 2006 show that δ18O of northern Fennoscandian lakes is mainly controlled by the isotopic composition of the precipitation (δ18Op). READ MORE

  6. 4. Chains of Trust : Networks of Persistent Resistance in Digital Activism

    Author : Philip K. Creswell; Hannah Bradby; Tora Holmberg; Cristina Flesher Fominaya; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; collective action; connective action; digital activism; hacktivism; social movements; social movement theory; high-risk activism; Anonymous; digital scenes; network theory; tie-strength; solidarity; micromobilization; commitment; Sociologi; Sociology;

    Abstract : Digital manifestations and their networks are seen as agile, but fragile, with the Internet facilitating fast, low-cost activism by bridging actors, distributing information, and circumventing gatekeepers. From this perspective, mediated collective action and digital activism are theorized through the understanding of the Internet as a medium which affords lowered costs and risks for activists. READ MORE

  7. 5. The molecular basis for substrate recognition and gating in sugar transporters

    Author : Sarah McComas; David Drew; Philip Biggin; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; membrane transport; sugar transporter; simulations; lipids; antimalarial drugs; biokemi; Biochemistry;

    Abstract : Sugar is a vital sustenance for most forms of life. For a cell to take up sugar, specialized transport proteins embedded into the membrane bilayer known as sugar porters, are required. READ MORE