Sökning: "electron microscopy"

Visar resultat 16 - 20 av 1369 avhandlingar innehållade orden electron microscopy.

  1. 16. Structural study of zeolites utilizing novel electron crystallographic methods : A voyage into the world of zeolite structures

    Författare :Tom Willhammar; Xiaodong Zou; Raul Lobo; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron crystallography; zeolites; structure determination; disorder; electron microscopy; Structural Chemistry; strukturkemi;

    Sammanfattning : Electron crystallography has evolved as a powerful method for structural characterization of a wide range of materials. It has two significant advantages over other methods for structure determination, e.g. X-ray diffraction. LÄS MER

  3. 17. Design and characterization of nanoparticles and their assemblies : Transmission electron microscopy investigations from atomic to mesoscopic length scales

    Författare :Arnaud Mayence; Lennart Bergström; Liberato Manna; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanoparticles; electron microscopy; Materials Chemistry; materialkemi;

    Sammanfattning : Transmission electron microscopy (TEM) is a powerful and versatile tool for investigating nanomaterials. In this thesis, various transmission electron microscopy techniques are used to study the chemical and structural features of different types of inorganic nanoparticles of well-defined morphologies as well as their assemblies. LÄS MER

  4. 18. Revealing the architecture and composition of the sperm flagellum tip

    Författare :Davide Zabeo; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cell biology; Structural biology; Microtubules; Electron microscopy; Cryo-electron microscopy; Cryo-electron tomography;

    Sammanfattning : The eukaryotic flagellum is a membrane-bound protruding organelle with a cytoskeleton of microtubules. Flagella are found in unicellular as well as multicellular organisms, performing a variety of functions. LÄS MER

  5. 19. Protein structure dynamics and interplay : by single-particle electron microscopy

    Författare :Hans Elmlund; Hans Hebert; José Maria Carazo; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biophysics; biochemistry; molecular; Biophysical chemistry; Biofysikalisk kemi;

    Sammanfattning : Single-particle cryo-electron microscopy (cryo-EM) is a method capable of obtaining information about the structural organization and dynamics of large macromolecular assemblies. In the late nineties, the method was suggested to have the potential of generating “atomic resolution” reconstructions of particles above a certain mass. LÄS MER

  7. 20. Middle ear structure in relation to function : the rat in middle ear research

    Författare :Nils Albiin; Umeå universitet; []
    Nyckelord :rats; Eustachian tube; ear; middle; tympanic membrane; palatal muscles; mucous membrane; blood vessels; mast cells; otitis media; microscopy; electron;

    Sammanfattning : The present study was undertaken to evaluate the rat as a model for middle ear re­search. The rat was chosen primarily because the gross structure of its middle ear shows several similarities to that of man. LÄS MER