Sökning: "crystallography"

Visar resultat 1 - 5 av 284 avhandlingar innehållade ordet crystallography.

  1. 1. Non-Standard Crystallography : Examples in 3- and 3+1 Dimensional Space

    Författare :Jeppe Christensen; Sven Lidin; An-Pang Tsai; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Modulation; Crystallography; intermetallic; materials; Chemistry; Kemi; strukturkemi; Structural Chemistry;

    Sammanfattning : Crystallography today is by many seen as merely a tool for determining the structure of a material on the atomic level. It is expected that whatever comes out of the tool is the indisputable truth, a fact. This thesis is based on five publications illustrating that this is very far from the real world of materials research. LÄS MER

  2. 2. Electron crystallography : methods and applications for biological and inorganic crystals and quasicrystals

    Författare :Da Neng Wang; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 3. 3D Electron crystallography : Real space reconstruction and reciprocal space tomography

    Författare :Daliang Zhang; Xiaodong Zou; Douglas L. Dorset; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Electron crystallography; Electron microscopy; Porous materials; Chemistry; Kemi; Structural Chemistry; strukturkemi;

    Sammanfattning : Electron crystallography is an important technique for studying micro- and nano-sized materials. It has two important advantages over X-ray crystallography for structural studies: 1) crystals millions of times smaller than those needed for X-ray diffraction can be studied; 2) it is possible to; focus the electrons to form an image. LÄS MER

  4. 4. Open-Framework Germanates : Crystallography, structures and cluster building units

    Författare :Kirsten Elvira Christensen; Xiaodong Zou; Osamu Terasaki; Angeles Monge; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; germanate; crystallography; building unit; zeotype; scale chemistry; Chemistry; Kemi; strukturkemi; Structural Chemistry;

    Sammanfattning : This thesis is focussing on the crystallographic challenges and what knowledge we can gain from studying the different open-framework germanates. Five new open-framework germanates have been synthesized and the structures have been determined by single crystal X-ray diffraction. LÄS MER

  5. 5. Computational protein crystallography : How to get the most out of your data

    Författare :Justin Bergmann; Teoretisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Hirshfeld atom refinement HAR ; ; quantum refinement; protein crystallography; X-ray crystallography; neutron crystallography; nitrogenase; acetylcholin esterase; triose isomerase;

    Sammanfattning : It is important to obtain accurate three dimensional structures of molecules and proteins to understand and predict their function and behaviour. X-ray crystallography is the major technique to determine three dimensional structures of proteins. LÄS MER