Drilling derrick that working many years often has the defect of bending bar.

Investigation on contamination by Campylobacter of retail raw meat in Shenyang;

In this structure,the steel plate segments between the slits behaved as a series of flexural links,which provided a fairly ductile response with a concentration of plastic deformation at the top and bottom of the flexural links.

Static behavior of circular hollow section joints with curved chords;