Sökning: "polar"

Visar resultat 6 - 10 av 523 avhandlingar innehållade ordet polar.

  1. 6. The Polar Cusp and its Ionospheric footprint : Dynamics and Transients

    Författare :Frédéric Pitout; Ryoichi Fujii; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; Solar wind - magnetosphere - ionosphère interactions; polar ionosphere; Rymd- och plasmafysik; Space physics; Rymdfysik; Space Physics; rymdfysik;

    Sammanfattning : The magnetopause, the boundary layer between the solar wind and the Earth’s magnetosphere, is not closed as we have long thought. Transfers of energy, particles and momentum from the solar wind to the magnetosphere actually take place. LÄS MER

  3. 7. Molecular Doping of Polar Conjugated Polymers

    Författare :David Kiefer; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; thermal stability; dopant dianion; air stability; compatibility; polar conjugated polymer; double doping; molecular doping;

    Sammanfattning : Organic semiconductors may enable a wide range of flexible electronics, such as flexible displays or solar cells. Conjugated polymers constitute one of the most widely studied class of organic semiconductors. LÄS MER

  4. 8. Low-Energy Ion Escape from the Terrestrial Polar Regions

    Författare :Erik Engwall; Anders I. Eriksson; Mats André; Thomas Moore; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; space physics; ion outflow; polar wind; auroral upflows; atmospheric escape; magnetotail lobes; spacecraft wake; electric field measurements; Geocosmophysics and plasma physics; Geokosmofysik och plasmafysik; Space and Plasma Physics; rymd- och plasmafysik;

    Sammanfattning : The contemporary terrestrial atmosphere loses matter at a rate of around 100,000 tons per year. A major fraction of the net mass loss is constituted by ions, mainly H+ and O+, which escape from the Earth’s ionosphere in the polar regions. LÄS MER

  5. 9. Human Pathogens and Antibiotic Resistant Bacteria in Polar Regions

    Författare :Jorge Hernández; Björn Olsen; Lotta Berg; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ESBL; Antibiotic Resistance; Polar Regions; Wild Birds; Mikrobiologi; Microbiology;

    Sammanfattning : Coincident with human activity in recent decades, human-associated microorganisms have arrived to the Antarctic region, possibly linked to increasing presence of scientific bases and ship-borne tourists. In the Arctic, humans have been present for a very long time, and the few parts of the Arctic without human activities is decreasing with time. LÄS MER

  7. 10. Polar Growth in Streptomyces venezuelae

    Författare :Markus Fröjd; Molekylär cellbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Cell polarity is an ubiquitous and important phenomenon relevant for a plethora of cellular functions. One type of cell polarity is polar growth, where an organism only synthesizes cell envelope at designated locations in the cell. This requires highly organized localization of cellular activities. LÄS MER