Results 81 to 90 of about 33,678 (214)

Long‐Time Solvability and Asymptotics for the 3D Rotating MHD Equations

Mathematische Nachrichten, Volume 299, Issue 6, Page 1480-1509, June 2026.
ABSTRACT We consider the initial value problem for the 3D incompressible rotating MHD equations around a constant magnetic field. We prove the long‐time existence and uniqueness of solutions for small viscosity coefficient and high rotating speed. Moreover, we investigate the asymptotic behavior of solutions in the limit of vanishing viscosity and fast
Hiroki Ohyama
wiley   +1 more source

A Novel Optimized Local Linearization Hybrid Block Method for Chaotic Systems: Applications to Stretch‐Twist‐Fold Flow and Bond Orbital Chaotic Attractors

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The numerical approximation of nonlinear chaotic differential systems, such as the modified stretch‐twist‐fold (STF) flow and multi‐bond chaotic attractors, presents a significant challenge due to their sensitive dependence on initial conditions and complex dynamics where analytical solutions are unattainable.
Shina Daniel Oloniiju, Anastacia Dlamini
wiley   +1 more source

Smoothed Particle Magnetohydrodynamics II. Variational principles and variable smoothing length terms

, 2003
In this paper we show how a Lagrangian variational principle can be used to derive the SPMHD (smoothed particle magnetohydrodynamics) equations for ideal MHD.
Balsara, Benz, Bonet, Brio, D. J. Price, Dai, Dai, Dellar, Field, Henyey, Hernquist, J. J. Monaghan, Janhunen, Monaghan, Monaghan, Monaghan, Monaghan, Morris, Nelson, Nelson, Newcomb, Oppeneer, Phillips, Price, Serna, Springel   +25 more
core   +1 more source

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

Journal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone, Mohammed Anteet, Pawandeep S. Matharu, Yara Almubarak   +3 more
wiley   +1 more source

Investigation of the Evolution Mechanism and Multiphysics Coupling in Tree‐Contact Single‐Phase‐to‐Ground Fault

High Voltage, EarlyView.
ABSTRACT Tree‐contact single‐phase‐to‐ground fault (TSF) is a common and hazardous type of failure in distribution networks. TSF is likely to occur when overhead conductors contact moist tree branches, potentially leading to insulation breakdown, posing serious threats to grid safety.
Wenjun Ning, Zuopeng Li, Mingxian Liu, Jianbo He, Tianxiang Chen, Shenli Jia   +5 more
wiley   +1 more source

Entropy Stable Finite Volume Approximations for Ideal Magnetohydrodynamics

, 2017
This article serves as a summary outlining the mathematical entropy analysis of the ideal magnetohydrodynamic (MHD) equations. We select the ideal MHD equations as they are particularly useful for mathematically modeling a wide variety of magnetized ...
Derigs, Dominik, Gassner, Gregor J., Walch, Stefanie, Winters, Andrew R.   +3 more
core   +1 more source

Compact Tubular Dielectric Elastomer Pump for Indoor Plants

Journal of Applied Polymer Science, Volume 143, Issue 25, July 5, 2026.
This study develops a mountable rolled dielectric elastomer pump (MRDEP) using silicone films and MWCNT‐based electrodes. The MRDEP is completely soft, silent in operation, and easily mounted on a piping system. We use dry stacking methods, fabricate a multilayer dielectric elastomer actuator (DEA), and a pre‐straining process in one direction before ...
Ardi Wiranata, Yuya Yamaguchi, Yu Kuwajima, Yuma Furuhashi, Hiroshi Fukui, Naoki Hosoya, Shingo Maeda   +6 more
wiley   +1 more source

Improved Myocardial Sodium Quantification at 7 T Using Interleaved 23Na/1H pTx MRI With Motion and Anatomy‐Based B1 Correction

Magnetic Resonance in Medicine, Volume 96, Issue 1, Page 173-190, July 2026.
ABSTRACT Purpose To improve accuracy and repeatability of myocardial 23Na quantification in cardiac MRI at 7 T by combining retrospective respiratory and cardiac motion correction with a novel anatomy‐based B1 bias field correction. Methods In this study, a dual‐nuclear interleaved 23Na/1H MRI sequence at 7 T was applied.
Laurent Ruck, Nico Egger, Benedikt Zobler, Judith Schirmer, Sophia Nagelstraßer, Andreas Bitz, Tanja Platt, Simon Konstandin, Christoph Kopp, Michael Uder, Armin Michael Nagel   +10 more
wiley   +1 more source

Magnetohydrodynamics and Plasma Cosmology

, 2005
We study the linear magnetohydrodynamic (MHD) equations, both in the Newtonian and the general-relativistic limit, as regards a viscous magnetized fluid of finite conductivity and discuss instability criteria.
A. Brandenburg, A.A. Galeev, A.M. Wolfe, Apostolos Kuiroukidis, B. Punsly, C. Hunter, C.G. Tsagas, C.L. Fryer, D.B. Papadopoulos, D.B. Papadopoulos, Demetrios Papadopoulos, E.N. Parker, E.N. Parker, H. Dimmelmeier, J. Adams, J. Carot, J. Jackson, J.D. Barrow, J.D. Jackson, J.V. Narlikar, K. Jedamzik, K.C. Jacobs, K.S. Thorne, Kostas Kleidis, L. Vlahos, Loukas Vlahos, N.A. Krall, P.P. Kronberg, P.P. Kronberg, P.P. Kronberg, R. Durrer, R. Durrer, S. Chandrasekhar, S. Hacyan, S. Weinberg, S.M. Hamberger, S.W. Hawking, T.G. Cowling, T.W. Baumgarte, Ya.B. Zel’dovich   +39 more
core   +1 more source

Sustainable Low‐Field Cardiovascular Magnetic Resonance in Changing Healthcare Systems—An Update

NMR in Biomedicine, Volume 39, Issue 7, July 2026.
Low‐field cardiovascular MRI offers a cost‐effective and accessible alternative to conventional high‐field systems. Recent technological advances have improved image quality, safety, and device compatibility, expanding its clinical applications. These developments position low‐field CMR as a scalable solution to improve global cardiovascular imaging ...
Muhammad Umair, Ahmed Marey, Sanjana Murali, Udunna C. Anazodo, Adrienne E. Campbell‐Washburn, Ntobeko A. B. Ntusi, Orlando P. Simonetti, Thoralf Niendorf, Regina Mammen, Sola Adeleke   +9 more
wiley   +1 more source