Proton Exchange Membrane Fuel Cell (PEMFC) is difficult for application because of its high current and wide voltage output.A fractional order PID controller is introduced to a Four-Switch Buck-Boost DC/DC converter to stabilize the power output in this paper.To reduce the inductor current read more ripple, a kind of dual-triggered switch strategy
Gain enhancement of a wide slot antenna over a wide frequency band read more using a low profile, second order bandpass frequency selective surface (FSS) as a superstrate is presented in this paper.The proposed multilayered FSS with non-resonant unit cells in each layer allows in-phase transmission of waves radiated from the antenna over a 3dB band
Abstract Background Anxiety disorders are highly prevalent in children and adolescents with autism spectrum disorder and often emerge before the age of 6 years.Yet, only a few studies have examined anxiety treatment for this group.Preliminary evidence from these studies suggests that utilizing cognitive behavioral therapy (CBT) as well as strategie
In this study surface properties and cleanability of new and traditional surface materials in cattle barns were examined in a field test.The concrete and plastic-coated samples were placed on a walking path on the floor and on a feeding table in a cattle barn.The surfaces were characterized using colorimetric and gloss measurements and determinatio