Results 41 to 50 of about 456,779 (297)

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

Advanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

Convergent evolution in human and domesticate adaptation to high-altitude environments

Philosophical Transactions of the Royal Society of London. Biological Sciences, 2019
Humans and their domestic animals have lived and thrived in high-altitude environments worldwide for thousands of years. These populations have developed a number of adaptations to survive in a hypoxic environment, and several genomic studies have been ...
K. Witt, E. Huerta-Sánchez
semanticscholar   +1 more source

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

Advanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang, Jianyang Dong, Yongming Yao, Kaijin Hu, Jianxiong Cui, Yikai Luo, Jiawen Zhang, Shichao Niu   +7 more
wiley   +1 more source

Activation of notch signaling pathway is a potential mechanism for mucin2 reduction and intestinal mucosal barrier dysfunction in high-altitude hypoxia

Scientific Reports
High-altitude hypoxia can cause gastrointestinal issues and damage the intestinal mucosal barrier, which is crucial for digestion and nutrient absorption. The Notch signaling pathway affects this barrier’s integrity. This study explores the Notch pathway’
Ruhan Jia, Ying Han, Qinfang Zhu, Jingxuan Zhang, Huan Zhang, Maojia Ka, Yi Ma, Mohammed Gamah, Wei Zhang   +8 more
doaj   +1 more source

Effect of dietary supplementation of microalgae Spirulina and Chlorella on growth performance and blood profile of broiler chicken at high altitude

Indian Journal of Animal Sciences, 2022
The objective of this study was to explore the effect of Spirulina and Chlorella as a dietary supplement on the growth performance of broiler chicken at high altitude.
SWATI, KAMRAN WAIDHA, SUBANGGI NEGAM, NAZIA PARVEEN, DEACHAN CHUSKIT, MAYARNGAM K, O P CHAURASIA   +6 more
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Enhanced Placental Mitochondrial Respiration in Tibetan Women at High Altitude

Frontiers in Physiology, 2021
Living at high altitudes is extremely challenging as it entails exposure to hypoxia, low temperatures, and high levels of UV radiation. However, the Tibetan population has adapted to such conditions on both a physiological and genetic level over 30,000 ...
Huifang Liu, Huifang Liu, Huifang Liu, Noryung Tenzing, Noryung Tenzing, Noryung Tenzing, Martha Tissot van Patot, Muge Qile, Muge Qile, Ri-li Ge, Ri-li Ge, Tana Wuren, Tana Wuren   +12 more
doaj   +1 more source

Nutrition and Altitude: Strategies to Enhance Adaptation, Improve Performance and Maintain Health: A Narrative Review

Sports Medicine, 2019
Training at low to moderate altitudes (~ 1600–2400 m) is a common approach used by endurance athletes to provide a distinctive environmental stressor to augment training stimulus in the anticipation of increasing subsequent altitude- and sea-level-based ...
T. Stellingwerff, P. Peeling, L. Garvican-Lewis, Rebecca Hall, A. Koivisto, I. Heikura, L. Burke   +6 more
semanticscholar   +1 more source

Microbial Contribution to Soiling and Its Impact on Photovoltaic Module Soiling in Arid Zones of the Atacama Desert

Advanced Sustainable Systems, EarlyView.
Microorganisms colonizing photovoltaic surfaces in the Atacama desert form biofilms that enhance particle adhesion and reduce energy yield. This study identifies UV‐resistant bacteria and carotenoid‐producing strains that interfere with PV performance.
Douglas Olivares, Ricardo Ortíz, Luis Rojas‐Araya, María Teresa Mata, Felipe Galleguillos, Jaime Llanos, Carlos Portillo, Valentina Escobar, Aitor Marzo   +8 more
wiley   +1 more source

Hypoxia Exacerbates Inflammatory Acute Lung Injury via the Toll-Like Receptor 4 Signaling Pathway

Frontiers in Immunology, 2018
Acute lung injury (ALI) is characterized by non-cardiogenic diffuse alveolar damage and often leads to a lethal consequence, particularly when hypoxia coexists.
Gang Wu, Gang Wu, Gang Xu, Gang Xu, De-Wei Chen, De-Wei Chen, Wen-Xiang Gao, Wen-Xiang Gao, Jian-Qiong Xiong, Hai-Ying Shen, Yu-Qi Gao, Yu-Qi Gao   +11 more
doaj   +1 more source