Search for dissertations about: "X ray diffraction"

Showing result 21 - 25 of 575 swedish dissertations containing the words X ray diffraction.

  1. 21. Phase transformation and stability studies of the Zr-H system

    Author : Tuerdi Maimaitiyili; Lunds universitet.; Lund University.; Malmö University.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; zirconium hydride; γ-ZrH; synchrotron X-ray diffraction; neutron diffraction; hydrogen charging; in situ phase transformation; hydrogen embrittlement; hydrogen induced degradation; NATURAL SCIENCES; NATURVETENSKAP; Sciences; Zirconium hydride; Nuclear materials; phase transformation; in-situ hydrogen charging; hydrogen related degradation; powder diffraction; Rietveld analysis;

    Abstract : Popular Abstract in English Zirconium alloys are widely used in nuclear power reactors as cladding material for their fuels due to the high strength, good corrosion resistance and low neutron absorption cross-section, even in extreme environment, that is characteristic for zirconium. The element, however, also has strong affinity for hydrogen, and when both are present they readily react and form a family of compounds called hydrides. READ MORE

  2. 22. Exploration of Non-Aqueous Metal-O2 Batteries via In Operando X-ray Diffraction

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Chenjuan Liu; Uppsala universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Keywords: lithium-oxygen batteries; sodium-oxygen batteries; metal-air; in operando X-ray diffraction; cathode materials; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Abstract : Non-aqueous metal-air (Li-O2 and Na-O2) batteries have been emerging as one of the most promising high-energy storage systems to meet the requirements for demanding applications due to their high theoretical specific energy. In the present thesis work, advanced characterization techniques are demonstrated for the exploration of metal-O2 batteries. READ MORE

  3. 23. Flash Diffractive Imaging in Three Dimensions

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Tomas Ekeberg; Uppsala universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; X-ray; diffraction; mimivirus; three dimensional; phase retrieval; EMC; manifold embedding; CXI; FEL; free-electron laser; single particle; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

    Abstract : During the last years we have seen the birth of free-electron lasers, a new type of light source ten billion times brighter than syncrotrons and able to produce pulses only a few femtoseconds long. One of the main motivations for building these multi-million dollar machines was the prospect of imaging biological samples such as proteins and viruses in 3D without the need for crystallization or staining. READ MORE

  4. 24. Structure Determination and Prediction of Zeolites A Combined Study by Electron Diffraction, Powder X-Ray Diffraction and Database Mining

    University dissertation from Stockholm : Department of Materials and Environmental Chemistry (MMK), Stockholm University

    Author : Peng Guo; Stockholms universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; zeolites; rotation electron diffraction; structure determination; structure prediction; strong reflections approach; oorganisk kemi; Inorganic Chemistry;

    Abstract : Zeolites are crystalline microporous aluminosilicates with well-defined cavities or channels of molecular dimensions. They are widely used for applications such as gas adsorption, gas storage, ion exchange and catalysis. The size of the pore opening allows zeolites to be categorized into small, medium, large and extra-large pore zeolites. READ MORE

  5. 25. Open-framework Structures Built by Inorganic Clusters Synthesis and Characterization

    University dissertation from Stockholm : Department of Materials and Environmental Chemistry (MMK), Stockholm Univeristy

    Author : Hong Chen; Stockholms universitet.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Open-framework; germanates; vanadoborates; aluminoborates; germanosilicates; crystal structure; hydrothermal synthesis; crystal X-ray diffraction; rotation electron diffraction; powder X-ray diffraction; oorganisk kemi; Inorganic Chemistry;

    Abstract : Novel open-framework germanates and vanadoborates, which are constructed from typical types of clusters, have been synthesized based on different strategies. The crystal structures are solved by using single crystal X-ray diffraction (SXRD) technique or by combined techniques. READ MORE