Results 31 to 40 of about 9,942,018 (291)

A new type of biomimetic fish with oscillatory propulsion method

open access: yesMATEC Web of Conferences, 2017
The traditional multi joint mechanical serial parallel structure biomimetic fish has lower propulsive efficiency, more energy transmission loss, more complicated mechanical design and control algorithms because of more mechanical joints.
Lei Zhang   +3 more
doaj   +1 more source

[Re] Three-dimensional wake topology and propulsive performance of low-aspect-ratio pitching-rolling plates (repro-packs)

open access: yes, 2021
Reproducibility packages (data and scripts) to generate the figures of the manuscript "[Re] Three-dimensional wake topology and propulsive performance of low-aspect-ratio pitching-rolling plates".
Olivier Mesnard, Lorena A. Barba
core   +1 more source

Energy efficiency of ship propulsive systems: rudder-propeller interaction

open access: yes, 2010
The rudder of a ship is used to maintain its direction and for changing course. As such the goal of rudder design is to maximise sideforce for control of course while minimising resistive drag.
Turnock, Stephen, Molland, Anthony
core   +2 more sources

Influence of Jumboizing on Propulsive Performance

open access: yesJOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN, 1999
This paper is concerned with the influence of hull elongation on engine and propulsive performance. Though propulsive performance is known to relate closely to the principle dimensions of a ship, it is not yet clear how ship length can influence the performance of CPP (controllable pitch propeller) ship and FPP (fixed pitch propeller) ship, both of ...
Kirihata, Tomoaki   +3 more
openaire   +2 more sources

Three-Dimensional Numerical Study of Hydrodynamic Interactions between Pectoral Fins and the Body of Aquatic Organisms

open access: yesBiomimetics
Fish swimming has attracted attention as a locomotion system with excellent propulsive efficiency. They swim by moving their body, fins, and other organs simultaneously, which developed during evolution.
Kotaro Morifusa, Tomohiro Fukui
doaj   +1 more source

The Age-Associated Reduction in Propulsive Power Generation in Walking

open access: yes, 2016
Propulsive power generation during push-off in walking decreases with advancing age. A common explanation is an accommodation for sarcopenia and muscle weakness. Yet, muscle strengthening often yields disappointing outcomes for walking performance.
Franz, Jason R., Jason R. Franz
core   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

open access: yesFEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux   +7 more
wiley   +1 more source

Comparison of lower-body neuromuscular performance profiles between 100 m and 400 m Olympic sprinters

open access: yesFrontiers in Sports and Active Living
The purpose of the present study was to examine and compare the lower-body neuromuscular performance characteristics of Olympic-level 100 m and 400 m sprinters.
Dimitrije Cabarkapa   +4 more
doaj   +1 more source

A Biomimetic Flexible Fishtail Embedded With Shape Memory Alloy Wires

open access: yesIEEE Access, 2019
In this paper, a biomimetic flexible fishtail actuated by shape memory alloy (SMA) wires is presented. The detailed structure of the fishtail propeller is designed to mimic the muscle and bone structure of a Carassius auratus.
Jian Li   +5 more
doaj   +1 more source

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