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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi All,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>We have been experiencing a problem with our interference
data in which after data fitting, the residuals frequently have a systematic “wavy”
look to them where they rise above and below zero multiple times >7 across
the fitted data. Subtracting a water blank does not fix the problem, and it
has occurred an several different samples. In real time, the fringes also “jump”
during centrifugation. Is this an indication of an equipment problem, perhaps
that there is something unstable in the centrifuge and/or optical system that
is leading to the movement of the fringe pattern detected by the camera? If
so, is there a likely culprit? If not, what is likely to cause this?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks for the help, <o:p></o:p></span></font></p>
<p class=MsoAutoSig><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Debra M. Eckert, Ph.D.<o:p></o:p></span></font></p>
<p class=MsoAutoSig><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Research Assistant Professor of Biochemistry<o:p></o:p></span></font></p>
<p class=MsoAutoSig><st1:place w:st="on"><st1:PlaceType w:st="on"><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>University</span></font></st1:PlaceType>
of <st1:PlaceName w:st="on">Utah</st1:PlaceName></st1:place><o:p></o:p></p>
<p class=MsoAutoSig><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>deckert@biochem.utah.edu<o:p></o:p></span></font></p>
<p class=MsoAutoSig><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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