Increasing global population and decreasing arable land pose tremendous pressures to agricultural production.The application of conventional chemical fertilizers improves agricultural production, but causes serious environmental problems and significant economic burdens.Biochar gains increasing interest as a soil amendment.Recently, more and more m
Abstract Background Low copy repeats (LCRs) are corky lala thought to play an important role in recent gene evolution, especially when they facilitate gene duplications.Duplicate genes are fundamental to adaptive evolution, providing substrates for the development of new or shared gene functions.Moreover, silencing of duplicate genes can have an in
Power electronic converters, together with their loads, sources, and controls, form a coupled system that includes many nonlinear interactions, for instance due to pulse-width modulation (PWM) and feedback control.In this paper we develop a complete, nonlinear modeling approach for voltage-source inverters in the frequency domain, taking into accou
This article presents a modular substrate-integrated waveguide (SIW) antenna array based on H-plane aperture structures for Ka-band.The unitary antenna is based ah6789-001 on a SIW aperture antenna with an improved H-plane radiation pattern by means of the implementation of metallic vias in the wave propagation along the H-plane antenna.The inner m