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\section{Payam's Papers}  DNA electrophoresis in vicinity of a membrane pore: \citet{http://adsabs.harvard.edu/abs/2013PhRvE..87d2722R} \citet{2013PhRvE..87d2722R}  and \citet{http://adsabs.harvard.edu/abs/2013PhRvE..87d2723R} \citet{2013PhRvE..87d2723R}  {\bf Some questions}  \begin{enumerate}  \item What happens if an {\it interior} or bulk DNA piece approaches the pore?  \item In \citet{http://adsabs.harvard.edu/abs/2013PhRvE..87d2723R} \citet{2013PhRvE..87d2723R}  page 5, it is claimed that motion will be a superposition of longitudinal and transverse. Is this true -- won't one of them be unstable (in the case where work done in dragging is less than $T$, say)? \item Same paper, page -- dimensional analysis. Try to do a better job than scaling argument: what are the coefficients? The fact that in the other paper they are off by some distance might be to do with this.  \begin{itemize}