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.
Experimental set-up. (A) The stem was wired to a stake to maintain the inclination angle of the stem. (B) Above the point of fixation to the stake, the stem was free to return to its original position. Measurements were taken from the stem below the point of fixation. The inclination angles (θ) were 0, 10, 20, 30, 40 and 50°.
