Fig 6. Data preprocessing: (a) averaged image of the whole database, and the images after subtracting the average for (b) A0, (c) A1, (d) A2, (e) A3, and (f) A4.
The particle size for (b)–(f) is 1 μm and the inhalation flow rate is 30 L/min.
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.