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<DIV><FONT size=2>Chin</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Walter is on vacation and may not be checking email from down
under. </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>To my knowledge WD-DCDT is the only program that can analyze
multiple speed velocity data globally. Setting up to use
it depends upon the range of s values your sample has. Check the
Biophys Chem paper Stafford & Braswell wrote & appreciate if you scan a
narrow region of the cell, say 6.49 to 7.01, to catch the rapidly sedimenting
species, you will need to go back after the run and scan the meniscus region as
a function of speed to correct for rotor stretching. To set up a WD run
you also must use the sed equil button in the Beckman software since that is the
only place multiple speed data collection can be programmed. The analysis
assumes all the data is in continuously #'ed & in
one directory. WD-DCDT can also be found in the SEDANAL
package.<BR></FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>-------------------------------------------------------------------<BR> Dr.
John J. "Jack" Correia<BR> Department of Biochemistry<BR> University
of Mississippi Medical Center<BR> 2500 North State Street<BR> Jackson,
MS 39216<BR> (601)
984-1522
<BR> fax (601)
984-1501
<BR> email address: <A
href="mailto:jcorreia@biochem.umsmed.edu">jcorreia@biochem.umsmed.edu</A>
<BR> homepage location: <A
href="http://biochemistry.umc.edu/correia.html">http://biochemistry.umc.edu/correia.html</A><BR> dept
homepage location: <A
href="http://biochemistry.umc.edu/">http://biochemistry.umc.edu/</A><BR>-------------------------------------------------------------------<BR> <BR> <BR></DIV>
<DIV><BR>>>> "Qin Zou" <heat-capacity@indy.rr.com> 01/29/05
10:20AM >>><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Dear all,<?xml:namespace prefix = o
ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Has some one tried to run the <SPAN
class=GramE>“ gravity</SPAN> sweep” experiment? How to set up the experiment in
XL-I? Can WINDCDT+ is the only one that can be used to analyze the data? Thanks
a bunch.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Chin<o:p></o:p></SPAN></FONT></P></DIV></BODY></HTML>