Hi Ansuman,
I think that the refinement is putting the atoms in the right place so
there is no 'exploding', 1.8 to 1.9A is the ideal length for Mg-F. Even
though you did not add Mg, if it is required for catalysis there must be
some around and this would then recruited into the MgF3-. As
Dear Rohit Kumar,
I prefer the term multiplicity instead of redundancy because the latter has
a connotation of not really needed any more.
The relation then is
multiplicity = c * number_of_frames * oscillation_range
where the constant c depends mainly on the space group.
HTH,
Kay
On Sun,
Dear Bernhard,
You are being charmingly modest and self-critical: your philosophical
discourse has always contributed to broadening an initially narrow question
in an enlightening way :-) .
In this case, it seems to me that Rohit's narrow question itself has
only been touched upon.
At the risk of further extending this philosophical (if not etymological)
discussion: in further defence of 'redundancy' I would point out that 'no
longer needed' is not the only meaning of 'redundant', though admittedly it
is the one that most often grabs the headlines! The meaning of
PS see http://en.wikipedia.org/wiki/Cyclic_redundancy_check .
I.
On 18 January 2015 at 13:54, Ian Tickle ianj...@gmail.com wrote:
At the risk of further extending this philosophical (if not etymological)
discussion: in further defence of 'redundancy' I would point out that 'no
longer
In defense of redundancy:
While the IUCr online dictionary is notably silent about multiplicity, the term
itself seems
already oversubscribed and used differently in various crystallographic
contexts.
(i) Each general or special position in a crystal structure has a certain
multiplicity,
You can create stereo images for publications in pymol:
http://www.pymolwiki.org/index.php/Stereo_ray
Adding labels and getting them to float at the correct depth within the
image can be tricky.
As for visualizing the stereo images, you can either practice alot and get
good at cross eyed stereo
Don't forget to check the anomalous difference Fourier - this may fix any S
atoms - the resolution is god enough
Eleanor
On 18 January 2015 at 01:12, Robert Stroud str...@msg.ucsf.edu wrote:
I suspect it may be a reaction with your reducing agent. What did you use
either in the preparation, or
Are most stereo images now for cross-eyed viewing? I thought they were for
wall-eyed viewing.
Perhaps a warning would be helpful for people starting out at looking at
published stereoviews. If you look at a stereoview constructed for wall-eyed
viewing but look at it with crossed eyes,
Wrong board, try sending it to the cootbb
Jūrgen
..
Jürgen Bosch
Johns Hopkins University
Bloomberg School of Public Health
Department of Biochemistry Molecular Biology
Johns Hopkins Malaria Research Institute
615 North Wolfe Streetx-apple-data-detectors://4, W8708
Baltimore,
Also RAID (REDUNDANT array of inexpensive disks). To me redundancy implies
robustness, overdetermination, like when I measure absorbance at 1500
wavelengths to calculate the concentration of five absorbing species with a
2-parameter baseline offset.
Exactly the connotation we want for our
Coot is our best program there ever was for fitting electron density. It is
very simple to
use and easy to teach. But sometimes improvements are made that seem to just
slow
things down. Having used 0.7.1 for a long time, i noticed that rotation and
scaling of
density is very quick, but
I find that the 'rotation' method of producing the stereo views can be
confusing because if you have z-clipping on, different atoms get clipped in
the L R images and you see the corresponding atoms which are still
visible in the other image in mono, while of course all the rest are in
stereo.
Hi Jeorge,
The easiest was of making a stereo image is with CCP4mg. You just need to tick
a box when you make an image.
Looking at stereo images takes practice, but it is a useful skill. It also
helps with those spot-the-differences puzzles :)
Cheers,
Robbie
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