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This study investigated a thermal breakdown model for semiconductor devices under the injection of microwave pulses. A general equation was derived to calculate power to failure, which depended on the pulse width and its duty cycle. The equation was able to calculate the threshold power given the parameters of a certain semiconductor device. This analysis is useful for further discussion on semiconductor...
Supported gold (Au) nanocatalysts have attracted much attention due to their high activities in CO oxidation at low-temperature. While the deactivation of gold catalysts during the reaction limits their practical use. Two major reasons for the deactivation were put forward and accepted in general, i.e. agglomeration of gold particles and accumulation of carbonate-like species1,2. The agglomeration...
In this paper, the ANSYS is used to establish a three-dimensional model of brake drums, and then simulate the process of the brake drums' temperature rising through the forcing of boundary loads and initial conditions. After that the author reveal temperature field distribution of the brake drum brake element model, then verify the accuracy of model by an experiment, which lay a theoretical foundation...
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