Briefly, the odorants were diluted in mineral oil to 100 ppm. Saturated vapor was obtained by flowing nitrogen gas at flow rates of 100 ml/min through the vial with the liquid odorant. The odor streams were mixed with clean air and adjusted to a constant final flow rate of 900 ml/...
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The average mass error for acetylated peptides was 0.1 ppm with a standard deviation of only 1 ppm. Among the 791 quantifiable sites, 25% (194 Kac sites) displayed a greater than or equal to 1.5-fold differential expression. The vast majority of this differentially expressed quarter showed an...
Despite widespread reports of the vasodilatory actions of nitric oxide(NO), little is known of the relaxant effect of NO on newborn airways or lung parenchymal structures. We studied the effects of inhaled NO at 20, 40, and 80 ppm on lung (Rl), tissue (R
compound using 50 mDa windows. The linear dynamic range was determined by injection of standard mixtures. Positive identification of compounds was based on the accurate mass measurement, with an error <5 ppm and its retention time, compared to that of a standard (± 2%). Mass spectra were ...