Sökning: "Escape"

Visar resultat 1 - 5 av 399 avhandlingar innehållade ordet Escape.

  1. 1. Ion escape from Mars : measurements in the present to understand the past

    Författare :Robin Ramstad; Stas Barabash; Yoshifumi Futaana; David Brain; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mars; escape; solar wind; evolution; CME; coupling; plasma; atmosphere; Space Physics; rymdfysik;

    Sammanfattning : Present-day Mars is a cold and dry planet with a thin CO2-dominated atmosphere comprising only a few ­­­mbar pressure at low altitudes. However, the Martian surface is marked with valley networks, hydrated mineral clays, carbonates and the remains of deltas and meandering rivers, i.e. LÄS MER

  3. 2. De små båtarna och den stora flykten : Arkeologi i spåren av andra världskrigets baltiska flyktbåtar

    Författare :Mirja Arnshav; Mats Burström; Simon Ekström; Björn Magnusson Staaf; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Archaeology of the contemporary past; materiality; Second World War; object biography; material culture; memory; cultural heritage; boats; escape; boat refugees; Estonian Swedes; Coastal Swedes; Estonia; the Baltic states; Samtidsarkeologi; arkeologi; andra världskriget; objektbiografi; Materiell kultur; minne; kulturarv; materialitet; båtar; flykt; båtflyktingar; estlandssvenskar; Estland; Baltikum; Archaeology with General Specialisation; arkeologi med inriktning mot allmän arkeologi;

    Sammanfattning : The Baltic states, Estonia, Latvia and Lithuania, were occupied no less than three times during the Second World War. Faced with a reign of terror, the threat of deportation, and compulsory conscription, over 30,000 people fled over the Baltic Sea to Sweden. LÄS MER

  4. 3. Escape to space or return to venus : ion flows measured by venus express

    Författare :Moa Persson; Yoshifumi Futaana; Hans Nilsson; Maria Hamrin; Dmitrij Titov; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Venus; water; escape; planetary physics; oxygen; O ; hydrogen; H ; ions; space physics; space plasma physics; Venus Express; ASPERA-4; IMA; spacecraft measurements; rymd- och plasmafysik; Space and Plasma Physics;

    Sammanfattning : The present-day Venusian atmosphere is crushingly dense, extremely hot and arid. Yet, in its early history, Venus presumably had a massive amount of water, which, if spread evenly over the surface, provided a water depth of 10s to 100s of meters. Therefore, over the course of the atmospheric evolution, the water must have been removed from Venus. LÄS MER

  5. 4. Essays on Uncertainty and Escape in Trade Agreements

    Författare :Mathias Herzing; Henrik Horn; Harry Flam; Daniel J. Kovenock; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Trade Agreements; Uncertainty; Escape; Repeated Games; Hidden Information; Safeguards; Trade Liberalization; WTO; Economics; Nationalekonomi;

    Sammanfattning : This thesis comprises three theoretical essays on trade agreements."Can Self-Destructive Trade Agreements Be Optimal?" focuses on the impact of hidden information on strategic interaction in the context of trade agreements. LÄS MER

  7. 5. Ion escape from Mars

    Författare :Qi Zhang; Mats Holmström; Xiao-Dong Wang; Shahab Fatemi; Hans Nilsson; David Andrews; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : When the solar wind reaches the Mars obstacle, mass loading by planetary ions slows down the solar wind and raises the bow shock. The Martian atmosphere is undergoing the a scavenging by the solar wind without the protection of a global magnetic field. Atmospheric escape is an important process for the evolution of the Martian climate. LÄS MER