In view of disturbances of eyelids, eyelashes spots locate in the annular section, a detection method of eyelids and eyelashes in the iris segmentation is proposed.

This paper presented a method of strength calculation and strength check of annular and circular section in flexure and eccentrically compressed component for reinforced concrete structure.

A pulsed extraction column with an annular cross section can successfully provide large-cross-section and can be made critically safe for nuclear operation.