Sökning: "structural transformations"

Visar resultat 1 - 5 av 77 avhandlingar innehållade orden structural transformations.

  1. 1. Iron Based Materials for Positive Electrodes in Li-ion Batteries : Electrode Dynamics, Electronic Changes, Structural Transformations

    Författare :Andreas Blidberg; Fredrik Björefors; Torbjörn Gustafsson; Carl Tengstedt; Miran Gaberšček; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Li-ion; batteries; electrochemistry; iron; LiFeSO4F; Li2FeP2O7; PEDOT; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : Li-ion battery technology is currently the most efficient form of electrochemical energy storage. The commercialization of Li-ion batteries in the early 1990’s revolutionized the portable electronics market, but further improvements are necessary for applications in electric vehicles and load levelling of the electric grid. LÄS MER

  3. 2. The Design and Structure Prediction of Protein Oligomers

    Författare :Robert Lizatovic; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; virus capsids; coiled coils; molecular replacement; symmetry; Rosetta; protein design; structure prediction;

    Sammanfattning : The minimum free energy state of a protein (the native state) is encoded by its amino-acid sequence. Due to the many torsional degrees of freedom (DOF) available to a polypeptide chain, a vast number of conformations is possible. LÄS MER

  4. 3. Electron microscopy studies of tungsten oxides in the range WO₃ - WO₂˔₇₂ : phase relations, defect structures, structural transformations and electrical conductivity

    Författare :Wubeshet Sahle; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oorganisk kemi; Volfram;

    Sammanfattning : The article reviews recent studies of structural variations in the W-O system in the composition range of WO3-WO2.72. Several types of defect structures have been observed in high resolution electron microscopy studies and defect models have been proposed. LÄS MER

  5. 4. Structure studies of some ternary copper chalcogenides

    Författare :Lasse Norén; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Ternary copper chalcogenides; Structures; Phase transitions; Disorder; Transformations; Kemi; Chemistry; Kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Copper has in its heavier chalcogenides often a high mobility in the solid state. This behaviour has also be found for some ternary compounds where copper appears to govern the observed phase transitions and structural transformations. LÄS MER

  7. 5. Sagali and the Kula : A Regional Systems Analysis of the Massim

    Författare :Johnny Persson; Socialantropologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; political organization; exchange systems; structural transformations; reproductive models; regional analysis; kula; Trobriands; Massim; Melanesia; Papua New Guinea; Cultural anthropology; ethnology; Kulturantropologi; etnologi;

    Sammanfattning : This thesis is concerned with developing a consistent regional perspective on the Massim peoples of southeastern Papua New Guinea, a task largely neglected by earlier anthropological studies, it is claimed, or, when sometimes attempted, unsuccessfully accomplished for a number of reasons, both methodological and theoretical. The author uses a comparative approach for investigating a selection of Massim societies. LÄS MER