Dynamic analysis of hysteresis motor permanent magnet synchronous Considering the effect of Foucault

The permanent magnet hysteresis motor has the advantages of both the hysteresis motor and the permanent magnet. This engine is ideal for applications for electric vehicles, compressor pumps, robots and precision industrial drives, such as inertial navigation systems and video recorders that require high-performance soft, low-performance, and high-performance audio. . In this article, we will model and simulate this engine. We first derive the dynamic equations of the engine by considering the Foucault effect, and then we present the equations of its state for simulation in the SIMULINK / MATLAB environment. Finally, we compare the results of the simulation with the results of the numerical method and the finite element. This comparison shows a good match for these results. The method presented in this paper is time-limited, faster than the finite element method, and has acceptable accuracy

Accumulation and localisation of sodium ions within the shoots of rice (Oryza sativa) varieties differing in salinity resistance

Oryza sativa L. (rice) is a salt-sensitive crop species which is relatively ineffective in controlling the influx of sodium and chloride ions to the shoot. Nonetheless, there is considerable varietal and individual variability in salinity resistance, much of which must derive, therefore, from differences in the fates and subsequent effects of saline ions after they have entered the plant. The destination of sodium ions within the plant has been investigated, in saline conditions, by examining the time-course of sodium ion concentrations in different leaves of four varieties and breeding lines of rice of differing salinity resistance. Radionuclide tracers were employed to study short term effects and the degree of retranslocation of these sodium ions. Sodium was not distributed uniformly but accumulated in the older leaves before the younger ones. At least some leaves were maintained at sub-lethal salt concentrations in at least the more salt resistant varieties. Radionuclide tracer studies showed that the discontinuous distribution of sodium (from leaf to leaf) is constitutive, and cannot be explained by time of exposure or differential leaf growth rates, and that significant quantities of sodium were not subsequently retranslocated, either within the plant or to the root medium