Results 11 to 20 of about 3,710,915 (96)

Active PWM ripple reduction in class-D amplifiers using digital loop filters [PDF]

, 2023
This thesis is focused on reducing the electromagnetic interference (EMI) due to the residual power after the output filter at the pulse-width modulation (PWM) frequency, the so called ripple. To reduce the ripple current through the speaker leads, it is
Lokin, Christiaan Egidius
core   +1 more source

Microbially influenced corrosion and rust tubercle formation on sheet piles in freshwater systems

Environmental Microbiology, Volume 25, Issue 10, Page 1796-1815, October 2023., 2023
Abstract The extent of how complex natural microbial communities contribute to metal corrosion is still not fully resolved, especially not for freshwater environments. In order to elucidate the key processes, we investigated rust tubercles forming massively on sheet piles along the river Havel (Germany) applying a complementary set of techniques.
Annika Fiskal, Jeremiah Shuster, Stefan Fischer, Prachi Joshi, Lipi Raghunatha Reddy, Sven‐Erik Wulf, Andreas Kappler, Helmut Fischer, Ilona Herrig, Jutta Meier   +9 more
wiley   +1 more source

Hyaluronan Receptors as Mediators and Modulators of the Tumor Microenvironment

Advanced Healthcare Materials, Volume 12, Issue 5, February 17, 2023., 2023
Hyaluronan is a major component of the tumor microenvironment (TME) that plays pro‐tumorigenic and carcinogenic functions. These functions are mediated by different hyaladherins, namely CD44, RHAMM, TLR2, and 4, LYVE‐1, HARE and layilin. The respective signaling pathways relevant to the modulation of the TME and potential cancer therapies are discussed
Ana M. Carvalho, Rui L. Reis, Iva Pashkuleva   +2 more
wiley   +1 more source

The impact of pubertal DHEA on the development of visuospatial oscillatory dynamics

Human Brain Mapping, Volume 43, Issue 17, Page 5154-5166, December 1, 2022., 2022
Abstract The adolescent brain undergoes tremendous structural and functional changes throughout puberty. Previous research has demonstrated that pubertal hormones can modulate sexually dimorphic changes in cortical development, as well as age‐related maturation of the neural activity underlying cognitive processes.
Madison H. Fung, Raeef L. Rahman, Brittany K. Taylor, Michaela R. Frenzel, Jacob A. Eastman, Yu‐Ping Wang, Vince D. Calhoun, Julia M. Stephen, Tony W. Wilson   +8 more
wiley   +1 more source

Torque ripple reduction of a direct-drive permanent-magnet synchronous machine by material-efficient axial pole pairing [PDF]

, 2011
This paper investigates a material-efficient axial pole pairing method for torque ripple reduction in a direct-drive outer-rotor surface-mounted permanent-magnet synchronous machine.
Patrick Chi-Kwong Luk, Luk, Patrick Chi-Kwong, Fei, Wei-Zhong, Weizhong Fei   +3 more
core   +1 more source

Compressed‐DMD for Electromechanical Mode Estimation from High‐Dimensional Ambient Data

International Transactions on Electrical Energy Systems, Volume 2022, Issue 1, 2022., 2022
Accurate and rapid estimation of electromechanical mode plays an important role in sensing the security situation of power systems. In this paper, the Compressed Dynamic Mode Decompensation (Compressed‐DMD) based estimation approach was proposed to extract the electromechanical mode from high‐dimensional ambient data measured by the synchrophasor ...
Shujia Guo, Guowei Cai, Deyou Yang, Chao Jiang, Shuyu Zhou, Qiuye Sun   +5 more
wiley   +1 more source

A Self-Learning Solution for Torque Ripple Reduction for Non-Sinusoidal Permanent Magnet Motor Drives Based on Artificial Neural Networks [PDF]

, 2013
This paper presents an original method, based on artificial neural networks, to reduce the torque ripple in a permanent-magnet non-sinusoidal synchronous motor.
WIRA, Patrick, OULD ABDESLAM, Djaffar, NGUYEN, Ngac Ky, MERCKLE, Jean, STURTZER, Guy, FLIELLER, Damien, Abdeslam, Djaffar Ould, Wira, Patrice   +7 more
core   +1 more source

Angular‐Adaptive Reconfigurable Spin‐Locked Metasurface Retroreflector

Advanced Science, Volume 8, Issue 21, November 3, 2021., 2021
An angular‐adaptive spin‐locked retroreflector is realized using a reconfigurable metasurface composed of mechanically rotational meta‐atoms. The reflection phase of meta‐atoms can be controlled dynamically by altering the orientation states based on the Pancharatnam‐Berry phase.
Weixu Yang, Ke Chen, Yilin Zheng, Wenbo Zhao, Qi Hu, Kai Qu, Tian Jiang, Junming Zhao, Yijun Feng   +8 more
wiley   +1 more source

Thermoregulation is not impaired in breast cancer survivors during moderate‐intensity exercise performed in warm and hot environments

Physiological Reports, Volume 9, Issue 14, July 2021., 2021
Thermoregulation was not disadvantaged in BCS compared to controls during moderate‐intensity exercise under heat stress. However, self‐paced exercise performance was reduced for BCS regardless of environmental temperature. Abstract This study aimed to assess how female breast cancer survivors (BCS) respond physiologically, hematologically, and ...
Rebecca L. Relf, Ben J. Lee, Gregor Eichhorn, Melanie S. Flint, Louisa Beale, Neil Maxwell   +5 more
wiley   +1 more source

Core Losses and Torque Ripple in IPM Machines: Dedicated Modeling and Design Trade Off [PDF]

, 2009
The proper combination of stator and rotor slot numbers is pursued in the design of interior permanent-magnet (IPM) motors with wide constant-power speed range.
P. Guglielmi, Paolo Guglielmi, Guglielmi, Paolo, A. Vagati, Vagati, Alfredo, Gianmario Pellegrino, F. Villata, G. Pellegrino, Villata, Franco, Franco Villata, Pellegrino, Gian-Mario Luigi, Alfredo Vagati, PELLEGRINO, GIAN - MARIO LUIGI   +12 more
core   +1 more source