Instead, theoretical analysis has often progressed by assuming stationarity of the metabolic processes, which in turn allows for characterizing the sets of steady-state fluxes under a set of suitable assumptions (Klamt and Stelling, 2003; Schwartz and Kanehisa, 2006; Voit and Almeida, 2004).
He said the "outright, sceptical reluctance" by some to engage with these issues had often slowed progress "to a standstill".
I had often picked my mother up after her chemo treatments, but I had never seen one in progress.
But even on projects agreed to by both sides, the details have often hindered progress.
From the Civil Rights Act to voting rights to the legalization of same sex marriage, the federal government has often pushed progress when many states weren't "ready".
It is a material issues that have often paced the progress of superconducting circuit fabrication.
U.S. intelligence has often underestimated the progress of North Korea's weapons development.
In the video address, Charles said: "I have watched in despair at how slow progress has sometimes been and how the outright, sceptical reluctance by some to engage with the critical issues of our day have often slowed that progress to a standstill.
But he said that progress has often been achieved alongside widespread social exclusion of the poor.
Aswany has been trying to finish a novel this past year, although his progress has often been interrupted by the revolution.
