To promote the engineering application of composite transmission high speed curve face gear, which consists a cylindrical gear and analysis tooth bending stress should be taken into consideration. High pair is new type pair. Combined with principle cam transmission, it can transfer axial/rotation motion power between two intersecting shafts. Based on engagement principle, meshing coordinate sys...

BACKGROUND To obtain a more detailed description of the stress-free state of the intestinal wall, longitudinal residual strain measurements are needed. Furthermore, data on longitudinal stress-strain relations in visceral organs are scarce. The present study aims to investigate the longitudinal residual strain and the longitudinal stress-strain relationship in the rat small intestine. METHODS...

The ability to break open large bones has evolved independently in only three groups of carnivorous mammals, all of which have robust teeth, vaulted foreheads, and pronounced sagittal crests. One unusual skull feature, present in bone-cracking members of the family Hyaenidae, is a caudally elongated frontal sinus, hypothesized to function in resistance to bending and stress dissipation during b...