Sentence examples for mass over charge from inspiring English sources

It consists of SELDI-TOF mass spectrometry of samples, which yield mass spectra for 45000 n/z (mass over charge) values.

The spectra were aligned setting the option maximum peak shift to 0.1% of the mass over charge (m/z) value.

The table also contains information about protein mass, peptide length, observed charge, observed mass over charge ratio, measured peptide mass (Da) Mascot Score, the presence of modifications (as N-terminal acetylation or Met oxidation), the error of the observed/theoretical mass in ppm and a column showing the number of peptides per identified protein (see Additional file 1).

A typical mass spectrum of Er-SRSO layers is shown in Figure 2. The mass-over-charge ratio is a characteristic of the chemical nature of each ion collected during atom probe analysis.

Each cell in the matrix represents the ion abundance at a given combination of retention time (RT) and mass-over-charge (m/ z) ratios.

In tandem MS (MS/MS), the mass spectrometer measures the mass-over-charge (m/z) of each peptide ion, sequentially breaks it along the peptide backbone, then measures the m/z of the resulting pieces.

To conservatively estimate the number of detected protein species in each fraction, deconvoluted mass lists generated by Xtract were further grouped with an in-house built program (Supporting Information, Experimental Section) to merge the mass over different charge states and scans as well as to correct isotope shifted assignments.

Spectra were collected over mass to charge (m/ z) ratios of 0 20 000 and 0 200 000 (488 laser shots) using laser intensities of 165 and 210, respectively.

Fifteen continuum scans were averaged in the 'MCA' mode over the mass to charge range (m/z) 300 1700.

Mass data were acquired at a rate of 1 spectrum s−1 over the mass to charge ratio (m/ z) range of 70 to 1,000.

Initially, full-scan analysis was performed over the mass to charge ratio (m/z) 20 250, with the analyser operating at a range of cone voltages scanned sequentially (12, 15, 18, 21, 24, 30 and 40 V).