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ThThe combination of the large uniaxial magnetocrystalline anisotropy (7×107 erg/cm3) of L10 ordered FePt and the large Ms of FeCo is quite attractive for the practical application to high density magnetic recording media and for developing innovative permanent magnets [1,2]. Moreover, it is predicted by the first-principle calculations that the tetragonal distortion (c/a∼1.25) yields a large uniaxial...
Neurovascular coupling in epilepsy is poorly understood, the study of which requires simultaneous monitoring of hemodynamic changes and neural activity in the brain. Here we for the first time present a combined real-time 3D Photoacoustic tomography (PAT) and electro-physiology (EEG) system for the study of neurovascular coupling in epilepsy, whose ability was demonstrated with a pentylenetetrazol...
Study of epilepsy in free moving animals provides the accurate information of this disease. While it has been proved that hemodynamic changes are greatly involved in epileptic seizures, methods for hemodynamic detection on free moving animals is limited. In this work, we integrated a photoacsoutic sensor and an EEG system into a small device that can be attached on the rat head, and for the first...
The current trend in production EVs/HEVs is to use interior permanent magnet synchronous motors (IPMSM) as the means of providing power to the vehicle drive train. The efficiency of these machines can be extremely high (>95%) although this typically occurs in a relatively narrow range in the middle of the machine speed-torque curve. This is a concern for automotive applications as vehicles operate...
This paper introduces a mechanically adjusted variable-flux (MVF) concept for switched flux permanent magnet (SFPM) machines. 2D FEA predictions and experimental results are presented showing the effectiveness of the MVF mechanism. Optimisation of the short circuit bar is carried out and several variations on the concept are presented, discussed, and experimentally validated.
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