Chromatography was performed using a Waters Acquity UPLC system, equipped with column oven, coupled to a Micromass LCT Premier time-of-flight (TOF) mass spectrometer equipped with an electrospray source operating in negative/positive ion mode in W mode with lockspray interface for accurate mass measurements.
Negative ion electrospray mass spectrometry data were collected with a Waters LCT Premier XE time-of-flight instrument controlled by MassLynx version 4.1.
As a secondary validation of identification, WCX-extracted proteins and whole BALF were analyzed by direct LC/MS (not gel based) on a Waters Q-Tof Premier quadrupole time-of-flight mass spectrometer (QTOF) in tandem with a nanoACQUITY ultra performance liquid chromatograph (UPLC) system (Waters Corp., Milford, MA).
Liquid chromatography-mass spectrometry [LC-MS/MS] analysis of the purified labeled product, [18F]FE-DTBZ-d4, and of the reference standard FE-DTBZ-d4 was performed using a Waters Acquity™ Ultra Performance LC system connected with a Micromass Premier™ Quadrupole Time-of-Flight [TOF] mass spectrometer (Waters Corporation).
Qualitative high resolution LC/MS data was acquired on a Waters Premier hybrid quadrupole time-of-flight (QToF) mass spectrometer (Waters, Boston MA, USA) equipped with a liquid chromatography system, using a 10 min gradient method and an Acquity UPLC BEH C18 (2.1 × 100 mm, 1.7 μm) column (Waters, Boston MA).
Accurate Mass Measurement was performed with a Waters Micromass LCT Premier Orthogonal Acceleration Time-of-Flight Mass Spectrometer 4 GHz TDC with LockSpray™ enable mass measurements of 5 ppm or better for m/z of 400 or greater and 2 mDa or better for m/z of 400 or less.
Hockaday was in charge at the New Lawn for four years and had kept them in the Conference Premier during times of financial uncertainty.
Each fraction was analyzed using a nanoACQUITY UPLC coupled to a QTOF Premier quadrupole, orthogonal acceleration time-of-flight tandem mass spectrometer (Waters, Milford, MA).
The two Luxembourg cases over Amazon and Fiat are particularly sensitive because Jean-Claude Juncker, the incoming Commission president, was the Grand Duchy's longtime premier at the time of the deals.
Sergei Khrushchev, the son of Nikita Khrushchev, who was the Soviet premier at the time of Gagarin's flight, told BBC News: "We were very proud but we did not really understand how important it was.
