VARIATION IN AN EXTREME WEAPON: HORN PERFORMANCE DIFFERENCES ACROSS RHINOCEROS BEETLE (TRYPOXYLUS DICHOTOMUS) POPULATIONS

Variation in an Extreme Weapon: Horn Performance Differences across Rhinoceros Beetle (Trypoxylus dichotomus) Populations

Japanese rhinoceros beetle (Trypoxylus dichotomus) males have exaggerated head horns that they use as weapons in combat over reproductive opportunities.In these contests, there is an advantage to having a longer horn, and there seems to be little cost to horn exaggeration.However, populations Goji Berry vary in the amount of horn exaggeration acros

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Effect of drill quality on biological damage in bone drilling

Abstract Bone drilling is a universal procedure in orthopaedics for fracture fixation, installing implants, or reconstructive surgery.Surgical drills are subjected to wear caused by their Rosemary repeated use, thermal fatigue, irrigation with saline solution, and sterilization process.Wear of the cutting edges of a drill bit (worn drill) is detrim

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