Linear electric motors can drive a linear motion load without intermediate gears, screws or crank shafts. A linear synchronous motor (LSM) is a linear motor in which the mechanical motion is in synchronism with the magnetic field, i.e. the mechanical speed is the same as the speed of traveling magnetic field. In this paper, we obtained the electromagnetic thrust developed by a salient-pole LSM.

In this study, nanofluid condensation and MHD flow analysis over an inclined and rotating plate are investigated respectively using Least Square Method (LSM) and numerical method. After presenting the governing equations and solving them by LSM, the accuracy of results is examined by the fourth order Runge-Kutta numerical method. For condensation, modeling results show that the condensate film thickness is reduced and in turn, the rate of heat transfer is enhanced by the addition of nanoparticles to the regular fluid. Effect of normalized thickness on velocity and temperature profiles reveals that increasing normalized thickness leads to an increase in f, f’ and a decrease in g,  . Effect of normalized thickness on k and s are similar to those of f’ and g, respectively.

Solid oxide fuel cells are a technology that can convert chemical energy directly into electrical energy. In the present study, single-phase lanthanium strontium manganate (LSM) nanoparticles with the nominal chemical formula La0. 8Sr0. 2MnO3 were successfully synthesized by the improved Pechini method. The infiltration of heterogeneous copper and cerium electrocatalysts on the cathode was investigated. X-ray diffraction (XRD) was used to determine the phase composition. The microstructure and surface morphology of the synthesized powder was characterized using a scanning electron microscope (SEM). The coated composition was examined using energy dispersive spectroscopy (EDS) and elemental mapping images. The microstructure of the electrocatalysts seeded on the cathode was studied by FESEM. The infiltration of 0. 5 M copper + 0. 5 M cerium nanoparticles (dimensions from 23 to 52 nm) with a broad distribution on the LSM cathode surface was obtained. Results showed that using single-component solutions of copper and cerium nanoparticles with dimensions of 39-61 nm and 20-42 nm, respectively, were generated on the cathode surface. The formation of agglomerated particles was observed as the cerium solution concentration increased. Secondary copper growth was observed as the copper solution concentration increased.

In this paper, the effects of infiltration of La2NiO4 (LNO) as a mixed ionic and electronic conductor (MIEC) on the electrochemical performance of porous strontium doped lanthanum manganite (LSM) oxygen electrode of solid oxide cells, in the temperature ranges of 650-850 ° C, is reported. XRD and FE-SEM results of the LNO sample calcined at 900 ° C confirmed the formation of single phase LNO nanoparticles and uniform distribution of LNO into the porous LSM backbone with a mean particle size of 40 nm, respectively. To characterize the electrochemical behavior of half-cells, electrochemical impedance spectroscopy (EIS) measurement at temperature intervals of 50 ° C was carried out. The LNO infiltrated LSM electrodes showed a noticeably decreased activation energy (from 130 to 103 kJ mol-1) and polarization resistance (from 26. 2 to 2. 5 Ω cm2 at 650 ° C) under open circuit voltage (OCV) condition. Besides, the equivalent circuit (EC) modeling revealed that LNO addition has a major effect on the low frequency arc, which is attributed to the surface exchange mechanisms. Decreased amounts of activation energy and polarization resistance of the infiltrated LSM electrode compared to those for the pure one suggest that introduction of LNO nano-particles to the microstructure of LSM is a promising approach to achieve better electrochemical performance even in the low temperature of 650° C.