Sökning: "crystallography"

Visar resultat 1 - 5 av 253 avhandlingar innehållade ordet crystallography.

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

    Detta är en avhandling från Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Författare :Jeppe Christensen; Stockholms universitet.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Modulation; Crystallography; intermetallic; materials; NATURAL SCIENCES Chemistry; NATURVETENSKAP 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

    Detta är en avhandling från Stockholm : Univ

    Författare :Da Neng Wang; Stockholms universitet.; [1988]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

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

    Detta är en avhandling från Stockholm : Department of Materials and Environmental Chemistry (MMK), Stockholm University

    Författare :Daliang Zhang; Stockholms universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron crystallography; Electron microscopy; Porous materials; NATURAL SCIENCES Chemistry; NATURVETENSKAP 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

    Detta är en avhandling från Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Författare :Kirsten Elvira Christensen; Stockholms universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; germanate; crystallography; building unit; zeotype; scale chemistry; NATURAL SCIENCES Chemistry; NATURVETENSKAP 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. Crystallography in Four Dimensions Methods and Applications

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Gunilla Carlsson; Uppsala universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biophysics; horseradish peroxidase; redox reactions; X-ray crystallography; haem catalysis; molecular movies; radiation damage; Molekylär biofysik; NATURAL SCIENCES Chemistry Molecular biophysics; NATURVETENSKAP Kemi Molekylär biofysik;

    Sammanfattning : The four-electron reduction of dioxygen to water is the most exothermic non-photochemical reaction available to biology. A detailed molecular description of this reaction is needed to understand oxygen-based redox processes. Horseradish peroxidase (HRP) is a haem-containing redox enzyme capable of catalysing the reduction of dioxygen to water. LÄS MER