Whereas conventional dust sources can run for weeks or longer with minimal need for access, electrospray systems will require more frequent service to replenish solvent, unclog spray tips, etc.
Over 70% of the NMDA-spikes last for just a little longer than the minimal length of Δ = 50 ms. Further nearly all of the spikes are shorter than 100 ms, thus staying well within a physiologically reasonable range.
To reduce the possible influence of passers-by, only users who stay for a time period longer than a minimal threshold (10 minutes in our analysis, see Supplementary Figure S3 for the robustness check) in one day are identified as consumers.
The resulting 1 kb long DNA fragments that flanked both sides of the marker gene were significantly longer than the minimal length necessary for efficient homologous recombination.
The gau ORF is longer than the minimal size compatible with a functional protein.
Another threshold was needed, as only intervals longer than some minimal length can be meaningfully related to behavior (Freeman and Barrie 2000; Freeman 2005).
Thus, it is important to determine the relative importance of a short-term, relatively high concentration of NO2 versus exposure for longer periods of minimal dose levels.
Operative time was about nine minutes longer for the minimal invasive group in our study, the difference between groups was not significant.
The DNA probes used were not much longer than the minimal DNA required for the formation of the complex, consisting of just 30 bp of DNA upstream of the TATA box and 9 bp of DNA downstream.
These results demonstrate that the important loops for stability must be the first and last loop, with the middle loop able to accommodate a longer sequence with minimal disruption to the stability.
