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Carcharopsis prototypus and the adaptations of single crystallite enameloid in cutting dentitions
Carcharopsis Priohybodus Thaiodus Carboniferous Enameloid ultrastructure
2009/10/20
Carcharopsis is a Palaeozoic shark comprising an enameloid-covered cutting dentition comprising serrated teeth.The enameloid ultrastructure of the teeth of C. prototypus is examined for the first time...
Determination of Mean Crystallite Dimensions from X-Ray Diffraction Peak Profiles: A Comparative Analysis of Synthetic Hematites
BET Hematite Iron Oxides Mean Crystallite Dimension Powder X-ray Diffraction Surface Area XRD
2011/12/8
Abstract: X-ray diffraction (XRD) profile analysis of eight synthetic hematite samples was performed to identify the best parameters for determining the apparent mean crystallite dimension (D) and, co...
XRD Measurement of Mean Crystallite Thickness of Illite and Illite/Smectite: Reappraisal of the Kubler Index and the Scherrer Equation
Crystal Thickness Illite Illite/Smectite Kubler Index Mixed-Layer Crystals Scherrer Equation XRD
2011/12/22
Abstract: The standard form of the Scherrer equation, which has been used to calculate the mean thickness of the coherent scattering domain (CSD) of illite crystals from X-ray diffraction (XRD) full w...
Relationship among Derivative Spectroscopy, Color, Crystallite Dimensions, and Al Substitution of Synthetic Goethites and Hematites
Aluminum Color Fiber-optic Doppler anemometry Goethite Hematite Visible spectroscopy
2012/1/13
Nine hematites and 22 goethites were synthesized by a variety of methods to obtain monomineralic samples having a range of Al substitutions and particle sizes. The second derivative of absorbance and ...
The Influence of Crystallite Size on the Apparent Basal Spacings of Kaolinite
Crystallite Size Apparent Basal Spacings Kaolinite
2012/2/13
For very small crystallites diffraction theory shows not only broadening of powder lines, but generally also a shift of the line position, depending on the change of the structure factor over the rang...