Results 101 to 110 of about 1,554,889 (376)

Alfv\'en Polar Oscillations of Relativistic Stars

, 2009
We study polar Alfv\'en oscillations of relativistic stars endowed with a strong global poloidal dipole magnetic field. Here we focus only on the axisymmetric oscillations which are studied by evolving numerically the two-dimensional perturbation ...
Abbott, Beyer, Colaiuda, Duncan, Gaertig, Glampedakis, Gustafsson, Hajime Sotani, Haskell, Kojima, Kostas D. Kokkotas, Lee, Levin, Levin, Pandharipande, Rincon, Samuelsson, Shibahashi, Sotani, Sotani, Sotani, Sotani, Teukolsky, Vavoulidis, Watts   +24 more
core   +3 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Emergence of Bloch oscillations in one-dimensional systems

, 2017
Electrons in periodic potentials exhibit oscillatory motion in presence of an electric field. Such oscillations are known as Bloch oscillations. In this article we theoretically investigate the emergence of Bloch oscillations for systems where the ...
Croy, Alexander, Popescu, Bogdan Stefan
core   +1 more source

Quality Enhancement of Laser Powder‐Bed Fusion Parts by Acoustically Assisted Additive Manufacturing by Laser Powder‐Bed Fusion and its Application to Lattice Structures

Advanced Engineering Materials, EarlyView.
Additive manufacturing technologies like laser powder‐bed fusion offer great design freedom and individualization of products down to a batch size of one. However, parts fabricated with this technology suffer from poor quality. Acoustic assistance during the build process can minimize these drawbacks.
Oliver Maurer, Dirk Bähre
wiley   +1 more source

Serotonin Modulates Oscillations of the Membrane Potential in Isolated Spinal Neurons from Lampreys [PDF]

, 2002
Studies were performed on spinal neurons from lampreys isolated by an enzymatic/mechanical method using pronase. The effects of 100 µM serotonin (5-HT) on membrane potential oscillations induced by a variety of excitatory amino acids were studied.
Batueva, I. V., Buchanan, James, Suderevskaya, E. I., Tsvetkov, E. A., Veselkin, N. P.   +4 more
core   +1 more source

Quantum oscillations from Fermi arcs

, 2009
When a metal is subjected to strong magnetic field B nearly all measurable quantities exhibit oscillations periodic in 1/B. Such quantum oscillations represent a canonical probe of the defining aspect of a metal, its Fermi surface (FS).
A Kanigel, A Kanigel, A Melikyan, AF Andreev, AF Bangura, AJ Millis, C Jaudet, CM Varma, D Podolsky, D Shoenberg, E Berg, G. Refael, H Ding, H. Weber, HJ Stöckmann, I Adagideli, I Hetel, IM Lifshitz, J Bardeen, J Corson, J Hoffman, K Yasui, L Marinelli, L Onsager, M Franz, M Franz, M. Franz, MA Hossain, MR Norman, N Doiron-Leyraud, O Vafek, O Vafek, RK Kaul, S Chakravarty, T Hanaguri, T Pereg-Barnea, T. Pereg-Barnea, TD Stanescu, V Galitski, V Pasler, W-Q Chen, WS Lee, Y Wang, YJ Uemura, ZA Xu   +44 more
core   +1 more source

Phase oscillator model for noisy oscillators [PDF]

The European Physical Journal Special Topics, 2017
The Kuramoto model has become a paradigm to describe the dynamics of nonlinear oscillator under the influence of external perturbations, both deterministic and stochastic. It is based on the idea to describe the oscillator dynamics by a scalar differential equation, that defines the time evolution for the phase of the oscillator.
openaire   +4 more sources

W‐Based Thin Film Metallic Glasses Doped with Ni, Zr, and B for Industrial Applications

Advanced Engineering Materials, EarlyView.
This work is the first to deal with a comprehensive comparison of two metallic glass systems, W–Zr–B and W–Ni–B, in terms of their suitability for specific industrial applications. Their mechanical and tribological properties are compared and discussed in combination with structural homogeneity on different types of technically relevant substrates and ...
Zbynek Studeny, Antonin Kubicek, Vjaceslav Sochora, Zdenek Pokorny, Stanislava Debnárová, Pavel Soucek   +5 more
wiley   +1 more source

On the oscillation of impulsively damped halflinear oscillators

Proceedings of The 6'th Colloquium on the Qualitative Theory of Differential Equations (August 10--14, 1999, Szeged, Hungary) edited by: Géza Makay and László Hatvani, 1999
Summary: The authors consider the nonlinear impulsive system \[ (\phi_\beta(x'))'+\phi_\beta(x) = 0,\quad t \neq t_n, \quad x^\prime(t_n + 0) = b_n x'(t_n), \] where \(n = 1, 2 \dots \), \(\phi_\beta(u)=|u|^\beta u\) with \(\beta>0\), and \(0\leq b_n \leq 1\). They investigate the oscillatory behavior of the solutions.
John R. Graef, János Karsai
openaire   +4 more sources

Ag Cluster‐Modified K0.5Na0.5NbO3 Piezocatalyst for Enhanced Electrochemical Dinitrogen Reduction Reaction

Advanced Engineering Materials, EarlyView.
Ag cluster‐modified K0.5Na0.5NbO3 acts as an efficient piezocatalyst for electrochemical N2 reduction, enhanced by built‐in electric fields under mechanical actuation. Comparative studies between static and actuated electrodes reveal improved performance under dynamic conditions.
Benedict Witulski, Naina Goyal, David Patrun, Fabio Pires, Ziyaad Aytuna, Hamed Alaei, Olav Schiemann, Sanjay Mathur   +7 more
wiley   +1 more source