Abstract: In this letter, the maximal achievable bandwidth of an Archimedean spiral antenna above a reflector is investigated. This bandwidth is defined by the frequency range where the gain in the ...

This study aimed to investigate the effect of active ruminal solids microorganism supplementation on newborn lamb gut microbiota and serum metabolism. Twenty-four Youzhou dark newborn lambs were ...

For circular charging pads, employing a symmetrical Archimedean spiral, a magnetic null occurs at a misalignment distance equal to approximately 40% of the pad diameter (or about 70% of the coil ...