839 research outputs found
Theory of spin accumulation and spin transfer torque in a magnetic domain wall
We study spin accumulation and spin transfer torque in a domain wall by
solving the Boltzmann equation with a diffusion approximation. We obtained the
analytical expressions of spin accumulation and spin transfer torque. Both the
adiabatic and the non-adiabatic components of the spin transfer torque
oscillate with the thickness of the domain wall. We show that the oscillation
plays a dominant role in the non-adiabatic torque when the domain wall
thickness is less than the spin-flip length, which is defined by the product of
the Fermi velocity and the spin-flip scattering time
Optical implementation of visible gray-image morphology with the visual-area-coding technique
This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/AO.35.001234 Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law
How Different Respiratory Rate Patterns affect Cardiorespiratory Variables and Performance
International Journal of Exercise Science 10(3): 322-329, 2017. This study aims to elucidate how respiratory rate (RR) patterns may affect respiratory gas exchange variables and performance during incremental intensity- exercise. 10 healthy young men (mean ± SD, age: 20.7 ± 0.5 years, height: 174.3 ± 5.7 cm, and body mass: 72.6 ± 10.4 kg) performed three incremental tests on a cycle ergometer at three different RR (60, 45 and 30 breaths per min) in each trial. During the tests, tidal volume (TV), minute ventilation (VE), fractional content of oxygen (FeO2), fractional content of carbon dioxide (FeCO2), oxygen uptake (VO2), expiratory carbon dioxide (VCO2), equivalent of oxygen (EqO2), VE/VCO2, and respiratory exchange ratio (RER) were determinate breath-by-breath. Additionally, exercise time (as a performance marker) was measured. Statistical analyses for the results were carried out to determine significant differences between the three trials. VCO2, VO2, and exercise time did not show statistical differences in the three trials. Therefore, we concluded that RR affects some respiratory gas exchange variables but does not influence the VO2max and endurance performance
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