Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Diagnostic of PMF analysis performed on the H-NMR data during SPC 2011 (A) and Bologna2013 (B). The Q values (the total sum of the squares of scaled residuals) are shown vs. the number of factors (p). Black and gray lines represent slightly different values between the two methods applied (N-NMF and MCR, respectively).
