Results 121 to 130 of about 1,518,407 (321)

Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy

IEEE Access
The turbine generator unit plays a very important role in maintaining the stability of the power system and improving the quality of power. However, hydropower units will bring the risk of low-frequency oscillation or ultra-low frequency oscillation to ...
Xiaoping Huang, Yaqiong Zhang, Wenzhe Huang   +2 more
doaj   +1 more source

The 10–20 d Low-Frequency Oscillation Characteristics of Summer Precipitation in Eastern China in the Decaying Year of CP ENSO

Atmosphere, 2019
Using National Centers for Atmospheric Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis data and observational data, the low-frequency oscillation characteristics of precipitation in eastern China during the decaying summer of ...
Cong Cai, Lijuan Wang, Junyu Wang, Zhiqiang Wang   +3 more
doaj   +1 more source

Emerging evidence for a mechanistic link between low-frequency oscillation of ventricular repolarization measured from the electrocardiogram T-wave vector and arrhythmia. [PDF]

Europace, 2021
Taggart P, Pueyo E, Duijvenboden SV, Porter B, Bishop M, Sampedro-Puente DA, Orini M, Hanson B, Rinaldi CA, Gill JS, Lambiase P.   +10 more
europepmc   +1 more source

Tropical Atmospheric Circulations: Dynamic Stability and Transitions

, 2009
In this article, we present a mathematical theory of the Walker circulation of the large-scale atmosphere over the tropics. This study leads to a new metastable state oscillation theory for the El Nino Southern Oscillation (ENSO), a typical inter-annual ...
Ma, Tian, Wang, Shouhong
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

Kinetic Insights into Precursor‐Assisted Soft Sphere Close Packing Revealed by In Situ GISAXS with Implications for Gas Sensing

Advanced Functional Materials, EarlyView.
The versatile precursor‐assisted soft sphere close packing during slot‐die coating is investigated with in situ X‐ray scattering. The soft crystallization pathways towards a close packing involve multistep structural transitions such as surface nucleation, in‐plane, and out‐of‐plane crystallization.
Guangjiu Pan, Wenhe Xie, Suzhe Liang, Ting Tian, Shanshan Yin, Lixing Li, Altantulga Buyan‐Arivjikh, Jinsheng Zhang, Thomas Baier, Zhuijun Xu, Matthias Schwartzkopf, Sarathlal Koyiloth Vayalil, Stephan V. Roth, Yonghui Deng, Peter Müller‐Buschbaum   +14 more
wiley   +1 more source

Tension Dynamics and Linear Viscoelastic Behavior of a Single Semiflexible Polymer Chain

, 2009
We study the dynamical response of a single semiflexible polymer chain based on the theory developed by Hallatschek et al. for the wormlike-chain model.
Bohbot-Raviv Y., Bouchiat C., Caspi A., Chattopadhyay A. K., Chirikjian G. S., Cocco S., de Gennes P. G., Doi M., Edwards S. F., Everaers R., Fixman M., Hallatschek O., Hallatschek O., Hamprecht B., Harnau L., Hiraiwa T., Kageshima M., Kawakami M., Kawakami M., Kawakami M., Khatri B. S., Khatri B. S., Kratky O., Ladoux B., Liverpool T. B., Maier B., Majumdar A., Marko J. F., Mizuno D., Morrison G., Morse D. C., Morse D. C., Murayama Y., Obermayer B., Obermayer B., Obermayer B., Pincus P., Poirier M. G., Quake S. R., Ritort F., Saito N., Sakai Y., Sakaue T., Shankar V., Somasi M., Strick T., Wang M. D., Wilhelm J., Winkler R. G., Winkler R. G., Winkler R. G., Winkler R. G., Yamada A., Yamakawa H., Yamakawa H., Yoshinaga N.   +55 more
core   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

Advanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Jordi Llorca, Lluís Soler   +4 more
wiley   +1 more source

On the harmonics of the low-frequency quasi-periodic oscillation in GRS 1915+105

, 2012
GRS 1915+105 is a widely studied black hole binary, well known because of its extremely fast and complex variability. Flaring periods of high variability alternate with "stable" phases (the plateaux) when the flux is low, the spectra are hard and the ...
Belloni, Belloni, Belloni, Belloni, Belloni, Castro-Tirado, E. M. Ratti, Fender, Fender, Greiner, Greiner, Greiner, Ingram, Leahy, Markwardt, Psaltis, Rao, Reig, Remillard, S. E. Motta, Sobczak, T. M. Belloni, Trudolyubov, van der Klis, van der Klis, van der Klis, Zhang   +26 more
core   +1 more source