Hi folks. Many thanks again to those who replied to my message about
shaped pulses a few weeks ago. I've had to put that project on the back
burner while I teach a course but I'll soon be back at it.
On another subject, I'm trying to do some HMBC of a peptide and am
specifically looking to see some NH/carbon correlations. The pulse
sequence is inv4gplplrnd and I have used delay times corresponding to long
range coupling of 15, 10 and 5 Hz but have seen no correlations. My
questions, then, are: is this experiment extremely sensitive to delay
times and should I perhaps try running for a longer time to see what I'm
looking for? The sample is quite dilute and I've run for about 8 hours but
not seen any NH/carbon correlations (yet!).
Keith Brown
University of Saskatchewan
Saskatoon, Saskatchewan
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100 buckets of bits on the bus
100 buckets of bits
Take one down, short it to ground
FF buckets of bits on the bus
FF buckets of bits on the bus
FF buckets of bits
Take one down, short it to ground
FE buckets of bits on the bus
ad infinitum...
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