Re: ultrastructure of pachycephalosaurid ossified tendon

[Phil Bigelow <bigelowp@juno.com>]

Sounds like an interesting paper.  Is it available as a pdf?

<pb>
--

On Sun, 24 Apr 2005 14:00:48 +0200 Markus Moser <dml_moser@web.de>
writes:
> 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
> doi:10.1107/S090904950500138X 
> 
> 
> Abstract
> 
> 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
> Germany
>   
> 
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