Each frame was excited with X-Cite 120Q lamp for 400 ms. Frames were not processed for background subtraction and the spots were quantified by quantifying the fluorescence intensity of the patches, in the frame of the z-stack in which they were brighter, and subtracting their local background, as described in Joglekar et al. (2006).
The array quality was controlled by requiring arrays to have more than 80% of spots with spot intensities higher than their local background and more than 75% of spots with spot intensity higher than 1.2 times their local background in both channels [ 14].
Green also gets the candidates to play armchair detectives, speculating on-camera about the unsolved killing and trying to fill in the local background relevant to the case.
Furthermore, the variation in the local background signal was less than 38%.
A background-corrected intensity for each spot was formed by subtracting the mean of the pixels in the local background from the mean of the pixels in the spot.
We randomly chose one of the "myc-transformed embryo fibroblast vs. brain" array comparisons and determined the signal-to-noise (S/N) values for each channel using the background-corrected feature signals and the variation in the local background signal.
Given a footprint segment, we assign a depletion score by considering the number of tags in the segment with respect to the number of tags in its local background.
Waters, 49, enjoys no edge in local background; he has spent his entire life in the Midwest.
With the new IRDye 800CW tracer, parotid and caudal mandibular lymph nodes became visible within 5 min of injection, remained clearly visible until at least 24 h after injection without an increase in local background activity, and the information provided with this conjugate was fully congruent with that obtained using the PET tracer Zr-nanocolloidal albumin at 24 h (see supplementary Fig. S2).
For each pollutant, we identified concentrations near these selected sources in relation to local background levels and developed deterministic multipliers with distance decay rates (together referred to as gradients in this paper) to apply to the background and regional concentrations predicted by our LUR models.
