Sökning: "Rosetta"

Visar resultat 1 - 5 av 16 avhandlingar innehållade ordet Rosetta.

  1. 1. Rosetta spacecraft potential and activity evolution of comet 67P

    Detta är en avhandling från Uppsala : Uppsala universitet

    Författare :Elias Odelstad; Uppsala universitet.; Uppsala universitet.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rosetta; comet; 67P; RPC-LAP; RPC-MIP; Langmuir probe; spacecraft potential; plasma; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Sammanfattning : The plasma environment of an active comet provides a unique setting for plasma physics research. The complex interaction of newly created cometary ions with the flowing plasma of the solar wind gives rise to a plethora of plasma physics phenomena, that can be studied over a large range of activity levels as the distance to the sun, and hence the influx of solar energy, varies. LÄS MER

  2. 2. Plasma environment of an intermediately active comet Evolution and dynamics observed by ESA's Rosetta spacecraft at 67P/Churyumov-Gerasimenko

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Elias Odelstad; Uppsala universitet.; Uppsala universitet.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rosetta; comet; 67P; RPC-LAP; RPC-MIP; RPC-ICA; RPC-MAG; ROSINA-COPS; Langmuir probe; spacecraft potential; plasma; Churyumov-Gerasimenko; ion composition analyzer; diamagnetic cavity; ion velocity; electron temperature; ion-neutral drag; collisional coupling; wake effects; filamentation; electron cooling; plasma waves; hybrid waves; Bernstein waves; minimum variance; polarization; wavelet; density fluctuations; magnetic field oscillations; drift-cyclotron instability; asymmetric plasma and magnetic field enhancements; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Sammanfattning : The subject of this thesis is the evolution and dynamics of the plasma environment of a moderately active comet before, during and after its closest approach to the Sun. For over 2 years in 2014-2016, the European Space Agency’s Rosetta spacecraft followed the comet 67P/Churyumov-Gerasimenko at distances typically between a few tens and a few hundred kilometers from the nucleus, the longest and closest inspection of a comet ever made. LÄS MER

  3. 3. Prediction, Design and Determination of Protein Structures

    Detta är en avhandling från Department of Biochemistry and Structural Biology, Lund University

    Författare :Sebastian Rämisch; Lunds universitet.; Lund University.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; protein design; Rosetta; Fold-and-Dock; leucine rich repeat proteins; coiled-coils; molecular replacement; ab initio phasing; temperature stability; fluorescent proteins;

    Sammanfattning : Popular Abstract in English Life on earth has evolved countless forms, beautiful shapes and colors as well as astonishingly complex systems. Remarkably, all living creatures consist of cells, which themselves are build from the same basic set of molecules, most importantly nucleic acids (RNA and DNA), lipids and proteins. LÄS MER

  4. 4. The Design and Structure Prediction of Protein Oligomers

    Detta är en avhandling från Department of Biochemistry and Structural Biology, Lund University

    Författare :Robert Lizatovic; Lunds universitet.; Lund University.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; virus capsids; coiled coils; molecular replacement; symmetry; Rosetta; protein design; structure prediction;

    Sammanfattning : Popular Abstract in English Proteins are a class of biological macromolecules that perform countless fundamental and diverse functions in living organisms. Chemically speaking, they are polymers built out of monomeric units called amino acids. All biological proteins are constructed out of 20 different amino-acid types. LÄS MER

  5. 5. La reconstitution du verbe en égyptien de tradition 400-30 avant J.-C

    Detta är en avhandling från Uppsala : Institutionen för arkeologi och antik historia

    Författare :Åke Engsheden; Uppsala universitet.; [2002]
    Nyckelord :HUMANIORA; HUMANITIES; Egyptologi; Egyptian language; verbal system; hieroglyphs; Rosetta Stone; morphology; Egyptologi; HUMANITIES and RELIGION Languages and linguistics Other languages Egyptology; HUMANIORA och RELIGIONSVETENSKAP Språkvetenskap Övriga språk Egyptologi; Egyptology; Egyptologi;

    Sammanfattning : Two variants of ancient Egyptian were used for different categories of written communication during the last millennium B.C. The vernacular, known as Demotic, served as the written language for administrative, legal and literary documents. LÄS MER