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Visar resultat 1 - 5 av 417 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Cold-climate landforms on Mars and Earth-analogues in Svalbard

    Författare :Andreas Johnsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mars; Svalbard; Spitsbergen; periglacial; ice; permafrost; Earth-analogues; terrestrial analogues; geomorphology; landforms; solifluction; debris flow; gully; craters; cold-climate;

    Sammanfattning : Periglacial landforms on Earth reflect cold-climate conditions and are intimately related to processes due to the presence of ground ice and perennially frozen ground, permafrost. The overall objective of this thesis is to investigate the potential of Svalbard as an analogue to Mars cold-climate landforms, and explore past and present processes and surface conditions on Mars by inference from morphological counterparts in Svalbard. LÄS MER

  3. 2. Adenosine analogues for antinociception : experimental studies in rodents on peripheral and intrathecal drug administration including assessment of spinal cord neurotoxicity

    Författare :Rolf Karlsten; Uppsala universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : .... LÄS MER

  4. 3. New strategies for characterizing Prussian blue analogues

    Författare :Ida Nielsen; William Robert Brant; Andrew Kentaro Inge; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Prussian blue analogues; positron annihilation lifetime spectroscopy; Mössbauer spectroscopy; sodium-ion batteries; neutron diffraction; octahedral tilting; sodium iron hexacyanoferrate; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Sammanfattning : Prussian blue analogues (PBAs), AxM[M’(CN)6]1–y·zH2O, are used in many different applications, such as energy storage, due to their tunable composition and structural diversity. To understand the material properties, it is important to accurately determine the composition and atomic structure of these materials. LÄS MER

  5. 4. Terpenoid Conidiation Factors in Penicillium cyclopium

    Författare :Yanhong He; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; acetals; hydrolysis; Biotechnology; Bioteknik; total synthesis; analogues; synthesis; conidiogenone; conidiogenol; terpenoid; Penicillium cyclopium; conidiation inducing activity; Natural product; fungal metabolites;

    Sammanfattning : Filamentous fungi produce asexual dispersive spores (conidia), when conditions are not suitable for apical extension growth. Conidiation (the process by which conidia produced) in genus Penicillium has attracted considerable interest because of its wide usage in different areas. LÄS MER

  7. 5. Structural studies of polychlorinated hydrocarbons : DDT analogues and degradation products

    Författare :Sven Hovmöller; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The crystal structures of five analogues and degradation products of DOT have been determined by single crystal X-ray diffraction techniques. The conformations of these compounds are discussed and compared with the other DDT-type compounds whose crystal structures have been solved. LÄS MER