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Re: ultrastructure of pachycephalosaurid ossified tendon
Sounds like an interesting paper. Is it available as a pdf?
On Sun, 24 Apr 2005 14:00:48 +0200 Markus Moser <email@example.com>
> This paper would probably have gone by undetected by most
> researchers: what an obscure dinosaur journal!
> Mark Goodwin, Ivan Lonardelli, Luca Lutterotti and Hans-Rudolf Wenk
> Texture analysis from synchrotron diffraction images with the
> Rietveld method: dinosaur tendon and salmon scale
> Journal of Synchrotron Radiation
> Volume 12 Issue 3 Page 354 - May 2005
> A Rietveld method is described which extracts information on crystal
> structure, texture and microstructure directly from two-dimensional
> synchrotron diffraction images. This is advantageous over
> conventional texture analysis that relies on individual diffraction
> peaks, particularly for low-symmetry materials with many overlapping
> peaks and images with a poor peak-to-background ratio. The method is
> applied to two mineralized biological samples with hydroxylapatite
> fabrics: an ossified pachycephalosaurid dinosaur tendon and an
> Atlantic salmon scale. Both are measured using monochromatic
> synchrotron X-rays. The dinosaur tendon has very strongly oriented
> crystals with c-axes parallel to the tendon direction. The salmon
> scale displays a weak texture.
> Kind regards
> Markus Moser
> Dr. Markus Moser
> Staatliches Museum fuer Naturkunde Stuttgart
> Museum am Loewentor (= Rosenstein 1)
> D-70191 Stuttgart
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