OBJECTIVE To compare the nerve injury and vessel disruption complicaitons in patients undergoing saphenous vein stripping using olive heads of different sizes. METHODS Big olive heads were used in group A (n=50) and small olive heads were used in group B (n=50) from the ankle to the groin; in group C (n=50), the vein was stripped in two sections; in an upward fashion by stripping the distal p...

Phytochemical investigation of Tanacetum parthenium L. family Asteraceae cultivated in Egypt resulted in isolation and identification of four flavonoids. One surface flavonoid was isolated from the fresh leaves and three other flavonoids were isolated from the flower heads. Four sesquiterpene lactones were isolated from the leaves. Two sterols were isolated from the roots. A comparative study o...

It has been suggested that the wear of ultra-high molecular weight polyethylene (UHMWPE) in total hip replacement is substantially reduced when the femoral head is ceramic rather than metal. However, studies of alumina and zirconia ceramic femoral heads on the penetration of an UHMWPE liner in vivo have given conflicting results. The purpose of this study was to examine the surface characterist...

The Problem: This research derives from the evolution of the M4, a dog-like robot, to the M2-Macaco project, a primate-like mobile robot in joint development with the MIT Leg Lab. It consists of the development of a portable and flexible robotic brain/head which both fits a quadruped and a bipede automaton. Merging social competencies with navigation capabilities requires an architecture that i...

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