The Ancient Shells Were Studied by X-ray Diffraction and Electron Probe
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چکیده
منابع مشابه
Nano-structural Characterization of Post-annealed ZnO Thin Films by X-ray Diffraction and Field Emission Scanning Electron Microscopy
ZnO thin films were deposited on Si(400) substrates by e-beam evaporation technique, and then post-annealed at different annealing temperatures (200-800°C). Dependence of the crystallographic structure, nano-strain, chemical composition and surface physical Morphology of these layers on annealing temperature were studied. The crystallographic structure of films was studied using X-Ray Diffracti...
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The short-range order of K P 0 3 glass has been studied by diffraction methods in order to make evident the different behaviour of the P-O bonds within the P 0 4 tetrahedron. The oxygen sites are devided into bridging and terminal (non-bridging) oxygen sites, corresponding to two P 0 bond lengths, the difference of which amounts to 14.5 pm. Previous conclusions about the changes of the P 0 bond...
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Diffraction can occur when electromagnetic radiation interacts with a periodic structure whose repeat distance is about the same as the wavelength of the radiation. Visible light, for example, can be diffracted by a grating that contains scribed lines spaced only a few thousand angstroms apart, about the wavelength of visible light. X-rays have wavelengths on the order of angstroms, in the rang...
متن کاملNano-structural Characterization of Post-annealed ZnO Thin Films by X-ray Diffraction and Field Emission Scanning Electron Microscopy
ZnO thin films were deposited on Si(400) substrates by e-beam evaporation technique, and then post-annealed at different annealing temperatures (200-800°C). Dependence of the crystallographic structure, nano-strain, chemical composition and surface physical Morphology of these layers on annealing temperature were studied. The crystallographic structure of films was studied using X-Ray Diffracti...
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Six different types of 5 S rRNA crystals were obtained using the specimen purified from highly thermophilic bacteria, Thermus thermophilus HB8. The best crystal available diffracts X-rays up to 13A Bragg spacing. One type of crystals was sufficiently thin to be subjected to electron microscopy. Optically filtered images of two different projections exhibit molecular regions distinctly from the ...
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ژورنال
عنوان ژورنال: Journal of Water Resources and Ocean Science
سال: 2019
ISSN: 2328-7969
DOI: 10.11648/j.wros.20190806.11