From: Peter Schuck <pschuck@helix.nih.gov>
  To  : rasmb@bbri.org
  Date: Wed, 06 Oct 1999 14:52:36 -0700

Re: Unusual(?) problem

Dear RASMB'ers, 

in reference to Jack's comment about the sedimentation times in the files
and how it affects other software packages - sedfit, the finite element
Lamm equation modeling package, takes the times from the w^2*t entry of the
file (the default), or optionally from the seconds entry.  

As a further option that can be useful in special situations, sedfit also
allows to fix the time of the start of the centrifugation experiment, i.e.
a 't0' time, to a user-defined value, or treat to it as fitting parameter
(this can be helpful, e.g. for studying the time-invariant noise patterns
- but this clearly shouldn't be done routinely).  

Best wishes, 
Peter



At 11:54 AM 10/6/99 -0600, you wrote:
>Bogos Agianian 
>
>This problem should also effect other packages that read the files and use 
>t.   Does it?
>
>Many of us experienceed the same problem soon after getting our instruments 
>- the problem was fixed by changing the eproms - ask Beckman to replace or 
>upgrade your eproms - I presume you have a very old set since this problem 
>dates back to 94!!
>
>-------------------------------------------------------------------
> Dr. John J. "Jack" Correia
> Department of Biochemistry
> University of Mississippi Medical Center
> 2500 North State Street
> Jackson, MS  39216
> (601) 984-1522                                 
> fax (601) 984-1501                             
> new email address: jcorreia@biochem.umsmed.edu     
> homepage: http://fiona.umsmed.edu/~biochem/correia.html  
> dept homepage: http://fiona.umsmed.edu/~biochem/biochem1.html
>-------------------------------------------------------------------
> 
> 
>

***********************************************************
Peter Schuck, PhD
Molecular Interactions Resource
Bioengineering and Physical Science Program, ORS
National Institutes of Health
Bldg. 13 Rm. 3N17
13 South Drive 
Bethesda, MD 20892 - 5766
Tel: (301) 435-1950
Fax: (301) 496-6608
email: Peter_Schuck@nih.gov
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