Results 101 to 110 of about 112,798 (305)
Effect analysis of Coulomb damping in shock isolator with different stiffness
Zhongguo Jianchuan Yanjiu, 2019 [Objectives] In the passive shock isolator,stiffness and damping are important factors to reduce the transient shock and reduce the vibration transmission.
Wen Zhaodong +4 more
doaj +1 more source
Advanced Healthcare Materials, EarlyView.To dissect how mechanical forces influence intestinal physiology, we developed a stretchable 3D colon‐on‐chip that integrates tunable topography, stiffness and peristalsis‐like motion within a physiologically relevant microenvironment. We showed that stretching is a dominant factor governing epithelial behavior, markedly enhancing proliferation and ...
Moencopi Bernheim‐Dennery +10 more
wiley +1 more source
Nonlinear seismic analysis of a reactor structure impact between core components [PDF]
, 1975 The seismic analysis of the FFTF-PIOTA (Fast Flux Test Facility-Postirradiation Open Test Assembly), subjected to a horizontal DBE (Design Base Earthquake) is presented. The PIOTA is the first in a set of open test assemblies to be designed for the FFTF.
Hill, R. G.
core +1 more source
The Enhanced Performance SVC for Transient Instability Oscillation Damping
Energy Procedia, 2014 AbstractTo utilise green energy, renewables have penetrated into utility. However, its intermittent nature affects on power quality and network stability. Static var compensators (SVCs) have been installed in order to gain power quality improvement. Nevertheless, lacking of real power support, the SVCs cannot minimise any instability.
Srithorn, Phinit +1 more
openaire +1 more source
Advanced Materials, EarlyView.In the work reported herein, the catalytic effects of acid sites on electrocatalytic glycerol oxidation reaction are investigated by using a novel catalytic material system that integrates Pt metal sites with acidic Al sites. Abstract The catalytic role and function of acid sites in solid acid catalysts, such as zeolites, are well understood in the ...
Ju Ye Kim +11 more
wiley +1 more source
Applied Sciences, 2018 Numerical oscillation is a common phenomenon in the current electromagnetic transient digital simulation in power systems. From the origin of the numerical oscillation, we proposed an extended critical damping adjustment method (ECDA) to solve the ...
Qiang Li +6 more
doaj +1 more source
Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz
Advanced Materials, EarlyView.Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim +8 more
wiley +1 more source
Applied Sciences, 2019 Using a doubly-fed induction generator (DFIG), with an additional active or reactive damping controller, is a new method of suppressing the inter-area oscillation of a power system. However, using active power modulation (APM) may decrease the damping of
Guowei Cai +5 more
doaj +1 more source
, 2010 We present heterodyne detected transient grating measurements on water filled Vycor 7930 in the range of temperature 20 - 90 degrees C. This experimental investigation enables to measure the acoustic propagation, the average density variation due the ...
Bartolini, P. +3 more
core +1 more source
Moth‐Wing‐Inspired Multifunctional Metamaterials
Advanced Materials, EarlyView.This study develops a moth‐wing‐inspired heterogeneous metamaterial that achieves synergistic broadband sound absorption, mechanical energy dissipation, and thermal insulation within a lightweight architected framework. Combining bioinspired gradient design, genetic‐algorithm optimization, and additive manufacturing, the bionic heterogeneous acoustic ...
Haoran Pei +12 more
wiley +1 more source