Results 81 to 90 of about 852,071 (368)

Kinematics Measurement and Power Requirements of Fruitflies at Various Flight Speeds

open access: yesEnergies, 2020
Energy expenditure is a critical characteristic in evaluating the flight performance of flying insects. To investigate how the energy cost of small-sized insects varies with flight speed, we measured the detailed wing and body kinematics in the full ...
Hao Jie Zhu, Mao Sun
doaj   +1 more source

Investigating Inter-Day Variations in the Physical Effects of Exoskeletons: Requirements for Long-Term Biomechanical Studies

open access: yesApplied Sciences, 2023
Exoskeletons potentially reduce physical strain on workers. However, studies investigating the long-term effects of exoskeletons in the workplace are rare, not least because demonstrating physical long-term impacts faces several challenges, including the
Julia Riemer   +2 more
doaj   +1 more source

Textile Encoding Inspired by Langer Lines via Elastically Graded Embroidered Tessellations

open access: yesAdvanced Materials, EarlyView.
A standard embroidery machine can encode skin‐like directional mechanics into stretchable fabrics that, when worn, augment the wearer's skin. Zigzag stitch patterns, inspired by skin collagen structure, pack extra slack in threads that, when tessellated, mimic Langer lines.
Leonid Zinatullin   +3 more
wiley   +1 more source

Action Observation Combined With Conventional Training Improves the Rugby Lineout Throwing Performance: A Pilot Study

open access: yesFrontiers in Psychology, 2019
Combining action observation (AO) and physical practice contributes to motor skill learning, and a number of studies pointed out the beneficial role of AO training in improving the motor performance and the athletes' movement kinematics.
Emanuela Faelli   +13 more
doaj   +1 more source

On Three-Algebra and Bi-Fundamental Matter Amplitudes and Integrability of Supergravity [PDF]

open access: yes, 2013
We explore tree-level amplitude relations for SU(N)xSU(M) bi-fundamental matter theories. Embedding the group-theory structure in a Lie three-algebra, we derive Kleiss-Kuijf-like relations for bi-fundamental matter theories in general dimension.
Huang, Yu-tin   +2 more
core   +2 more sources

Kinematics of the South Atlantic rift [PDF]

open access: yes, 2013
. The South Atlantic rift basin evolved as a branch of a large Jurassic–Cretaceous intraplate rift zone between the African and South American plates during the final break-up of western Gondwana.
C. Heine, J. Zoethout, R. Muller
semanticscholar   +1 more source

Architected Soft Actuators for Artificial Musculoskeletal Systems

open access: yesAdvanced Materials, EarlyView.
An architected soft actuator uses a servo motor and a combination of 3D printed architected elastomers to extend and contract. The actuator exhibits high actuation stroke, force output, and power density for constructing bioinspired artificial musculoskeletal systems.
Taekyoung Kim   +3 more
wiley   +1 more source

Effects of Strength vs. Plyometric Training on Change of Direction Performance in Experienced Soccer Players

open access: yesSports, 2020
The purpose of this study was to compare how 6 weeks of strength- vs. plyometric training, which were matched upon direction of motion and workload, influences change of direction (COD) performance. Twenty-one experienced male soccer players (age: 22.2 ±
Håvard Guldteig Rædergård   +2 more
doaj   +1 more source

The SAMI Galaxy Survey: Unveiling the nature of kinematically offset active galactic nuclei

open access: yes, 2015
We have observed two kinematically offset active galactic nuclei (AGN), whose ionised gas is at a different line-of-sight velocity to their host galaxies, with the SAMI integral field spectrograph (IFS).
Allen, J. T.   +16 more
core   +1 more source

Bio‐Inspired Artificial Muscle‐Tendon Complex of Liquid Crystal Elastomer for Bidirectional Afferent‐Efferent Signaling

open access: yesAdvanced Materials, EarlyView.
The Muscle–tendon complex (MTC)‐inspired Liquid crystal elastomer (LCE) artificial muscle integrates actuation (efferent) and proprioceptive sensing (afferent) by combining contractile nematic and elastic isotropic LCEs within a single soft structure. Embedded liquid metal channels enable simultaneous Joule heating and real‐time sensing of length and ...
Jiyeon Cho   +6 more
wiley   +1 more source

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