Results 71 to 80 of about 163,881 (295)
Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion
Advanced Robotics Research, EarlyView.This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley +1 more source
Analytical and numerical investigation of nonlinear internal gravity waves [PDF]
Nonlinear Processes in Geophysics, 2001 The propagation of long, weakly nonlinear internal waves in a stratified gas is studied. Hydrodynamic equations for an ideal fluid with the perfect gas law describe the atmospheric gas behaviour. If we neglect the term Ͽ dw/dt (product of the density
S. P. Kshevetskii
doaj
On the Interpretation of Gravity Wave Measurements by Ground-Based Lidars
Atmosphere, 2017 This paper asks the simple question: How can we interpret vertical time series of middle atmosphere gravity wave measurements by ground-based temperature lidars? Linear wave theory is used to show that the association of identified phase lines with quasi-
Andreas Dörnbrack +2 more
doaj +1 more source
, 2005 In this paper, we develop a formalism in order to incorporate the contribution of internal gravity waves to the transport of angular momentum and chemicals over long time-scales in stars.
Charbonnel, C., Talon, S.
core +1 more source
Instabilities of Internal Gravity Wave Beams [PDF]
Annual Review of Fluid Mechanics, 2018 Internal gravity waves play a primary role in geophysical fluids: They contribute significantly to mixing in the ocean, and they redistribute energy and momentum in the middle atmosphere. Until recently, most studies were focused on plane wave solutions.
Dauxois, Thierry +3 more
openaire +3 more sources
Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
wiley +1 more source
Russian Journal of Earth Sciences, 2023 The far fields of internal gravity waves from a radially symmetric initial perturbation of lines of equal density in a layer of a stratified medium of finite thickness, as well as the far fields of surface waves from an impulse source in a homogeneous ...
Vladimirov Igor'
doaj +1 more source
The relation of gravity waves and turbulence in the mesosphere [PDF]
, 1986 Since researchers couldn't prove that the mesospheric turbulence layers are generated by the simultaneously existing short-period gravity waves, they invoked other generation mechanisms than wave breaking.
Rottger, J.
core +1 more source
Magnetic Field Driven Microrobot Based on Hydrogels
Advanced Robotics Research, EarlyView.Hydrogel‐based magnetic microrobots synergize remote magnetic control with the biocompatibility of flexible hydrogels, emerging as promising tools for minimally invasive biomedicine. This enables remotely controllable, untethered navigation within complex biological microenvironments.
Juncai Song, Yubing Guo
wiley +1 more source
Is VHF Fresnel reflectivity due to low frequency buoyancy waves? [PDF]
, 1983 VHF radar echoes are greatly enhanced near the zenith relative to other directions. This enhancement must be due to reflection from horizontally stratified laminate of refractive index.
Vanzandt, T. E., Vincent, R. A.
core +1 more source