Results 21 to 30 of about 42,879 (310)

Imaging in population science: cardiovascular magnetic resonance in 100,000 participants of UK Biobank - rationale, challenges and approaches. [PDF]

, 2013
UK Biobank is a prospective cohort study with 500,000 participants aged 40 to 69. Recently an enhanced imaging study received funding. Cardiovascular magnetic resonance (CMR) will be part of a multi-organ, multi-modality imaging visit in 3-4 dedicated UK
Frank E Rademakers, Steffen E Petersen, Petersen, SE, Rademakers, Frank E., Neubauer, Stefan, Nagel, E, Peakman, T, Sellors, J, Peakman, Tim, Petersen, Steffen E., Rademakers, Frank E, Rademakers, FE, Paul Leeson, Nagel, Eike, Matthews, PM, Young, AA, Tim Peakman, Fabian Bamberg, Plein, S, Friedrich, MG, Young, Alistair A, Young, Alistair, Steve Garratt, Jane M Francis, Sven Plein, Francis, Jane M., Rory Collins, Friedrich, Matthias G, Plein, Sven, Bluemke, David A., Young, Alistair A., Alistair A Young, Jonathan Sellors, Collins, Rory, Leeson, Paul, Francis, JM, Bamberg, F, David A Bluemke, Collins, R, Francis, Jane M, Garratt, Steve, Paul M Matthews, Bluemke, David A, Matthews, Paul M, Matthias G Friedrich, Friedrich, Matthias G., Sellors, Jonathan, Bluemke, DA, Garratt, S, Matthews, Paul M., Neubauer, S, Bamberg, Fabian, Petersen, Steffen E, Eike Nagel, Stefan Neubauer, Leeson, P   +55 more
core   +1 more source

Extended Gersgorin Theorem-Based Parameter Feasible Domain to Prevent Harmonic Resonance in Power Grid

Energies, 2017
Harmonic resonance may cause abnormal operation and even damage of power facilities, further threatening normal and safe operation of power systems. For renewable energy generations, controlled loads and parallel reactive power compensating equipment ...
Tao Lin, Rusi Chen, Guangzheng Yu, Ruyu Bi, Xialing Xu   +4 more
doaj   +1 more source

Stochastic resonance in electrical circuits—I: Conventional stochastic resonance. [PDF]

, 1999
Stochastic resonance (SR), a phenomenon in which a periodic signal in a nonlinear system can be amplified by added noise, is introduced and discussed. Techniques for investigating SR using electronic circuits are described in practical terms.
Luchinsky, D. G., MANNELLA, RICCARDO, McClintock PVE, Stocks NG, Mannella, R., McClintock, Peter V. E., Luchinsky DG, Stocks, N. G.   +7 more
core   +1 more source

On Resonance in Periodically Forced Oscillators and Coupled Systems of Excitable Systems and Nonlinear Oscillators [PDF]

, 1996
We analyze some mathematical problems that arise in studies of phenomena observed in the cardiac action. We illustrate a method to characterize the response of a nonlinear oscillator to an external forcing, and introduce some numerical results.
Watanabe, Masaji
core   +1 more source

A meta‐heuristic capacitor placement framework for distribution grids using modal resonance analysis

IET Renewable Power Generation, 2022
Shunt capacitors are usually installed in distribution grids for power factor correction. On the other hand, the number of harmonic‐producing sources such as wind turbines (WTs), photovoltaic (PV) panels, storage units, and electronic loads is rapidly ...
Hossein Farzin, Mehdi Monadi
doaj   +1 more source

Hybrid Filters To Damp Harmonic Resonance In Power Transmission Systems

Eletrônica de Potência, 2006
Problems related to harmonic propagation in transmission systems have been noticed in the last years. Passive filters, commonly used to attenuate noncharacteristic harmonics in HVDC systems, stay at risk of disconnection from the system due to ...
Lucas F. Encarnação, Alexandre G. Merçon, Hélio H. de Almeida, Emanuel L. van Emmerik, Maurício Aredes   +4 more
doaj   +1 more source

Harmonic resonances in granular plane Couette flow [PDF]

EPJ Web of Conferences
The shearbanding instability patterns and bifurcations have been well-studied in granular plane Couette flow using the single-mode Landau equations. However, shearbanding modes interact with each other and undergo harmonic resonances.
Biswas Lima, Shukla Priyanka
doaj   +1 more source

Eigenvalue of a semi-infinite elastic strip [PDF]

, 2006
A semi-infinite elastic strip, subjected to traction free boundary conditions, is studied in the context of in-plane stationary vibrations. By using normal (Rayleigh–Lamb) mode expansion the problem of existence of the strip eigenmode is reformulated in ...
Pichugin, AV, V. Zernov, J. Kaplunov, Zernov, V, Kaplunov, JD, A. V. Pichugin   +5 more
core   +1 more source

Resonance propagation analysis for inverter‐dominated multi‐AC‐bus systems

IET Renewable Power Generation, 2021
Harmonic resonance in a system with multiple inverters connecting to a single AC bus has been well studied in previous literature. However, in reality, a large number of distributed inverters are often classified into several groups using a few matching ...
Beihua Liang, Jinwei He, Chengshan Wang
doaj   +1 more source

A Novel Suppression Method for Low-Order Harmonics Causing Resonance of Induction Motor

Machines, 2022
In the motor drive system of electric vehicles, there are some nonlinear factors, such as the deadtime and the conduction voltage drop of switching devices, which will generate low-order harmonics of the stator current and the torque ripple.
Pengyun Song, Yanghui Liu, Tao Liu, Huazhang Wang, Liwei Wang   +4 more
doaj   +1 more source