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.
Dependence of the cambium–xylem chain impedance modulus on the reciprocal sample diameter for the high-frequency region. The number of samples in each experimental group was 5 and the number of measurement repetitions was 5. Data are presented as mean values.
