Dynamic Analysis of the Locomotion Mechanism in Foxtail Robots: Frictional Anisotropy and Bristle Diversity.

This study investigated the locomotion mechanism of foxtail robots, focusing on the frictional anisotropy of tilted bristles under the same friction coefficient and propulsion strategy using bristle diversity. Through dynamic analysis and simulations, we confirmed the frictional anisotropy of tilted bristles and elucidated the role of bristle diversity in generating propulsive force. The interaction between contact nonuniformity and frictional anisotropy was identified as the core principle enabling foxtail locomotion.

Antimicrobial Susceptibility Patterns and Genetic Diversity of spp. Isolates from Patients with Diarrhea in South Korea.

This study aimed to characterize the latest antimicrobial resistance patterns and genetic diversity of spp. isolated from patients with acute diarrhea in Korea. In total, 371 clinical isolates (361 and 10 ) were collected from patients with diarrhea in 106 medical institutions of six provinces during the seasonal peak (April-September 2022) in South Korea.