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The impact of a commercial lower extremity exoskeleton on metabolic load, perceived exertion, and physiological response to a challenging military relevant task: A randomized cross-over design pilot study.
PLoS One
January 2025
CFD Research Corporation, Huntsville, AL, United States of America.
Purpose: To assess physiological metrics during the use of a commercially available bilateral active ankle exoskeleton during a challenging military-relevant task and if use of the exoskeleton during this task influences: metabolic load, physiological measures or rate of perceived exertion.
Methods: Nine healthy volunteers (5M, 4F) completed this randomized cross-over design trial, with a baseline visit and two randomized test sessions (with/without the exoskeleton). Variables included impact on time to exhaustion during walking on a treadmill at varying speeds and gradients (0-15%) at 26.
Desired Color Diversity of Carbon Fiber with Excellent Environmental Super-Durability and Remarkable Flame Retardancy.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of New Textile Materials and Advanced Processing Technologies, College of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, P. R. China.
Carbon fiber (CF) has been widely used in aerospace, military, infrastructure, sports, and leisure fields owing to its excellent mechanical properties, superior corrosion and friction resistances, excellent thermal stability, and lightweight. However, the ultrablack appearance derived from the extremely strong absorption of light throughout the entire visible region makes it difficult to satisfy the aesthetic and pleasurable demands of the colorful world and limits their applications in a broader field. Herein, inspired by the , a double-layer ultrathin AlO/TiO composite structure was fabricated on CFs by the atomic layer deposition method.
View Article and Find Full Text PDFDesign and Aerodynamic Analysis of a Flapping Mechanism for Foldable Biomimetic Aircraft.
Biomimetics (Basel)
January 2025
Automotive Parts Research Institute, Hunan University of Technology, Hengyang 421002, China.
This study investigates the unsteady aerodynamic mechanisms underlying the efficient flight of birds and proposes a biomimetic flapping-wing aircraft design utilizing a double-crank double-rocker mechanism. Building upon a detailed analysis of avian flight dynamics, a two-stage foldable flapping mechanism was developed, integrating an optimized double-crank double-rocker structure with a secondary linkage system. This design enables synchronized wing flapping and spanwise folding, significantly enhancing aerodynamic efficiency and dynamic performance.
View Article and Find Full Text PDFThe Brain Activation of Two Motor Imagery Strategies in a Mental Rotation Task.
Brain Sci
December 2024
Department of Military Medical Psychology, Air Force Medical University, Xi'an 710032, China.
Motor imagery includes visual imagery and kinesthetic imagery, which are two strategies that exist for mental rotation and are currently widely studied. However, different mental rotation tests can lead to different strategic performances. There are also many research results where two different strategies appear simultaneously under the same task.
View Article and Find Full Text PDFManganese exposure induces parkinsonism-like symptoms by Serpina3n-TFEB-v/p-ATPase signaling mediated lysosomal dysfunction.
Cell Biol Toxicol
January 2025
Department of Environmental Medicine, School of Medicine, Chongqing University, Chongqing, China.
Manganese (Mn) is a neurotoxin that has been etiologically linked to the development of neurodegenerative diseases in the case of overexposure. It is widely accepted that overexposure to Mn leads to manganism, which has clinical symptoms similar to Parkinson's disease (PD), and is referred to as parkinsonism. Astrocytes have been reported to scavenge and degrade extracellular α-synuclein (α-Syn) in the brain.
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