Results 31 to 40 of about 22,911 (237)

Simulation Research on Fuel Temperature Variation Law of a UAV during Climbing

open access: yesHangkong gongcheng jinzhan, 2021
The medium altitude long endurance UAV Using RON 95# vehicle gasoline or 100LL aviation gasoline as fuel is prone to encounter air lock during climbing. The simulation model of the UAV fuel system is built by using the Flowmaster software.
WEN Zhanyong
doaj   +1 more source

VALUE OF SPEED CAPABILITIES IN YOUTH SPEED CLIMBING AT HIGH SPORTS LEVEL

open access: yesSOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, 2020
Current research on speed climbing at the senior level shows that speed capabilities are a significant factor determining climbing time. The main purpose of our research was to evaluate the level of speed capabilities among young speed climbers and to examine the relationship between the level of speed capabilities and the results achieved during an ...
Krawczyk, Marcin   +4 more
openaire   +3 more sources

Factor structure of the integrated training of elite athletes - representatives of mountain sports

open access: yesPedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2013
The purpose of this study was to identify the characteristics of the factor structure of the readiness of mountaineers and climbers of different specializations.
Zh.L. Kozina   +3 more
doaj   +1 more source

Impact of High-Altitude on Truck’s Climbing Speed: Case study in Qinghai-Tibet Plateau Area in China

open access: yesJournal of Advanced Transportation, 2019
Truck’s climbing performance is an important consideration in traffic safety, efficiency, and highway geometric design. With the infrastructure development in high-altitude area in China, more attention needs to be paid on truck’s climbing performance in
Tian Lei   +4 more
doaj   +1 more source

Mass-mediated sex differences in climbing patterns support the gravity hypothesis of sexual size dimorphism [PDF]

open access: yesWeb Ecology, 2007
The gravity hypothesis of sexual size dimorphism can explain the patterns of extreme sexual size dimorphism in spiders (males smaller than females) because small males climb faster and therefore may be better at reaching females that live in high ...
J. Moya-Laraño   +3 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Kinematics and Aerodynamics of Dragonflies (Pantala flavescens, Libellulidae) in Climbing Flight

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
This study presents a detailed analysis of dragonflies’ climbing flight by integratinghigh-speed photogrammetry, three-dimensional reconstruction, and computational fluid dynamics.
Liansong Peng   +7 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

open access: yesFEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta   +3 more
wiley   +1 more source

Analysis of Traffic Capacity on Mountainous Two Lane Highway Adding Climbing Lane

open access: yesMATEC Web of Conferences, 2016
During the construction of mountainous double lane highway, climbing lane plays a certain role for enhancing the traffic capacity. In order to explore traffic capacity improvement effect for different conditions of climbing lane, 20 representative models
Meng Yunwei   +3 more
doaj   +1 more source

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