Altogether, the data set consisted of 151 high-resolution survey mass spectra including 12 blank controls.
As part of the baseline survey, mass blood investigation and anthropometric measurements was done among 2410 under-five children in the study Gots.
The dataset, organized in a form of a flat-file database by LipidX software, comprised 151 survey mass spectra acquired from 70 individual plasma samples.
Total lipid extracts were directly infused into a LTQ Orbitrap mass spectrometer and survey mass spectra acquired within less than 3 min time at the target mass resolution of 100,000 (FWHM).
The capillary voltage was set to 3,500 V, and data-dependent tandem mass spectrometry acquisitions were performed on precursors with charge states of 2, 3 or 4 over a survey mass range of 400 to 1,300.
The mass spectrometer was operated in positive ion mode, and during each run, it automatically switched between a high-resolution (resolving power 50 000) survey mass spectrum in the FTMS cell and consecutive low-resolution CID spectra of the five most abundant ions in the ion trap.
Survey mass spectra were acquired at 60,000 resolving power and a data-dependent top-10 method was employed, with each precursor ion being fragmented by both ETD and collision-activated dissociation (CAD) in the linear ion trap, with subsequent detection there.
Separations were performed using a 25 min linear gradient starting at 15% mobile phase B to 70% mobile phase B before holding at 70% mobile phase B for 5 min and re-equilibrating for 5 min at 15% mobile phase B. ESI survey mass spectra were collected using a m/ z range of 700 2000.
TxtEagle surveys masses of people on mobile TxtEagle then forwards the survey (or other task) to thousands of individual members via their GSM phones, and pays them upon completion.
Mr. Haslam said he and a group of aid workers would survey the people massed around the road and work with a local committee to try to identify those most urgently needing evacuation.
