Results 61 to 70 of about 160,425 (302)

Snake Robot Locomotion Patterns for Straight and Curved Pipe

open access: yesJournal of Mechanical Engineering, 2018
In the paper the locomotion of snake robot is introduced considering locomotion in straight and curved pipe. For the straight pipe locomotion was designed traveling wave locomotion pattern with sine-like wave which expands from rear of the robot to its ...
Virgala Ivan   +2 more
doaj   +1 more source

Travelling wave fronts in reaction–diffusion systems with spatio-temporal delays

open access: yesJournal of Differential Equations, 2006
The existence of travelling wave solutions to delayed systems of reaction-diffusion type, which is studied by the authors of the article under review, is equivalent to the existence of solutions to some second order system of functional differential equations (FDEs).
Wang, Zhi-Cheng   +2 more
openaire   +1 more source

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

open access: yesAdvanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler   +3 more
wiley   +1 more source

Dynamics of Wetting Fronts in Porous Media

open access: yes, 1998
We propose a new phenomenological approach for describing the dynamics of wetting front propagation in porous media. Unlike traditional models, the proposed approach is based on dynamic nature of the relation between capillary pressure and medium ...
A. E. Scheidegger   +31 more
core   +1 more source

3D Printing Strategies for Bioengineering Human Cornea

open access: yesAdvanced Healthcare Materials, EarlyView.
This review highlights recent progress in 3D bioprinting strategies for engineering human corneas. Key aspects include the replication of corneal transparency, curvature, and biomechanical properties, alongside innovations in recent advancements in 3D printing methods, which benefit in overcoming current challenges.
Yunong Yuan   +4 more
wiley   +1 more source

Physics of Within-Tissue Wave Propagation Generated by Pulse Propagation in the Carotid Artery

open access: yesApplied Sciences, 2019
(1) Background: We aimed to assess the validity of laser Doppler vibrometry (LDV) as an emerging method to measure the local pulse wave velocity (PWV) from skin displacement generated by the pressure pulse inside an underlying artery.
Daniela Tommasin   +4 more
doaj   +1 more source

2022 Tonga Volcanic Eruption Induced Global Propagation of Ionospheric Disturbances via Lamb Waves

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The Tonga volcano eruption at 04:14:45 UT on 2022-01-15 released enormous amounts of energy into the atmosphere, triggering very significant geophysical variations not only in the immediate proximity of the epicenter but also globally across the whole ...
Shun-Rong Zhang   +7 more
doaj   +1 more source

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

open access: yesAdvanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus   +9 more
wiley   +1 more source

Guest Editorial Special Issue on Progress in Photonic Spin-Orbit Interaction (SOI)

open access: yesIEEE Photonics Journal, 2023
The papers in this special section focus on progress in photonic spin-order interaction (SOI). Spin and orbital angular momenta (SAM and OAM) are two distinct components of light beams.
Xinxing Zhou, Jacob Khurgin, Shenhe Fu
doaj   +1 more source

Effect of selection on ancestry: an exactly soluble case and its phenomenological generalization

open access: yes, 2007
We consider a family of models describing the evolution under selection of a population whose dynamics can be related to the propagation of noisy traveling waves.
A. H. Mueller   +10 more
core   +1 more source

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