Results 31 to 40 of about 23,458 (290)

Electromagnetic Vibration Characteristics of High-Frequency Transformer under DC Bias with Different Winding Structures

, 2023
The core excitation saturation and vibration caused by DC bias are one of the important considerations in the design of high-frequency transformer (HFT).
Haibo Ding, Wenliang Zhao, Min Li, Youliang Sun, Li Zhang   +4 more
core   +1 more source

New ASPN High Efficiency Treatment of ASTM M2 Steel [PDF]

Materials Research, 2021
Plasma nitriding treatments are applied to achieve excellent surface properties on steel parts and tools. Active screen plasma nitriding (ASPN) does not have the defects presents in direct nitriding plasma treatments (DCPN).
Edison Silva Lima, Leonardo Fonseca Oliveira, Alexandre da Silva Rocha   +2 more
doaj   +1 more source

Improved electromagnetic bias theory: Inclusion of hydrodynamic modulations [PDF]

Journal of Geophysical Research: Oceans, 2001
The modulation of short ocean waves by longer ones is a likely contributor to the radar altimeter's electromagnetic ranging bias (EM bias). An analytic model to account for this component of the EM bias is developed here under a two‐scale two‐dimensional hydrodynamic assumption.
Elfouhaily, T, Thompson, Dr, Chapron, Bertrand, Vandemark, D   +3 more
openaire   +1 more source

Dirac-Based Quantum Admittance of 2D Nanomaterials at Radio Frequencies

Applied Sciences, 2022
Starting from a rigorous finite mass, Dirac equation-based model, we investigate the R.F. quantum admittance of a monolayer 2D material under the action of an electromagnetic (e.m.) wave with axially directed vector potential.
Tullio Rozzi, Davide Mencarelli, Gian Marco Zampa, Luca Pierantoni   +3 more
doaj   +1 more source

Signatures of the Higgs mode in transport through a normal-metal–superconductor junction

Physical Review Research, 2020
A superconductor subject to electromagnetic irradiation in the terahertz range can show amplitude oscillations of its order parameter. However, coupling this so-called Higgs mode to the charge current is notoriously difficult.
Gaomin Tang, Wolfgang Belzig, Ulrich Zülicke, Christoph Bruder   +3 more
doaj   +1 more source

Optimization of bias current coefficient in the fault-tolerance of active magnetic bearings based on the redundant structure parameters

Automatika, 2020
To improve the reliability of magnetic bearings, the redundant structures are usually designed to provide the desired bearing characteristics continually by the reconfiguration of the remaining structures when some components fail.
Xin Cheng, Shuai Deng, Baixin Cheng, Meiqian Lu, Rougang Zhou   +4 more
doaj   +1 more source

Analysis of transformer bias vibration based on "magnetic-mechanical" coupling

Journal of Applied Science and Engineering
The large-scale application of flexible DC power transmission technology leads to DC bias in transformer cores, and the vibration analysis of transformers under the influence of DC bias is becoming a hot topic.
Junqiang Xing, Zhuwen Dai, Wendi Yu, Yunshuo Zhang   +3 more
doaj   +1 more source

The effect of radiofrequency electromagnetic fields (RF-EMF) on biomarkers of oxidative stress in vivo and in vitro: A protocol for a systematic review

Environment International, 2022
Background: Oxidative stress is conjectured to be related to many diseases. Furthermore, it is hypothesized that radiofrequency fields may induce oxidative stress in various cell types and thereby compromise human and animal health.
Bernd Henschenmacher, Annette Bitsch, Tonia de las Heras Gala, Henry Jay Forman, Athanassios Fragoulis, Pietro Ghezzi, Rupert Kellner, Wolfgang Koch, Jens Kuhne, Dmitrij Sachno, Gernot Schmid, Katya Tsaioun, Jos Verbeek, Robert Wright   +13 more
doaj   +1 more source

Analysis of the saturated electromagnetic devices under DC bias condition by the modified harmonic balance finite element method

, 2010
The modified harmonic balance finite element method was applied to investigate the DC biased problem in the saturated electromagnetic devices. The electromagnetic field was solved by the block Gauss-Seidel algorithm combined with the relaxation ...
null Lin Li, Cheng, Z, null Xiaojun Zhao, null Junwei Lu, null Tiebing Lu, Lu, T, Li, L, null Zhiguang Cheng, Lu, J, Zhao, X   +9 more
core   +1 more source

Effects of metallic system components on marine electromagnetic loop data [PDF]

, 2020
Electromagnetic loop systems rely on the use of non‐conductive materials near the sensor to minimize bias effects superimposed on measured data. For marine sensors, rigidity, compactness, and ease of platform handling are essential.
Katrin Schwalenberg, Jegen, Marion, Hendrik Müller, Reeck, Konstantin, Marion Jegen, Hölz, Sebastian, Haroon, Amir, Müller, Hendrik, Konstantin Reeck, Schwalenberg, Katrin, Amir Haroon, Sebastian Hölz   +11 more
core   +1 more source