An agricultural tillage sweep providing good soil action without ridges in the soil surface at both high and low speed operation in different soil conditions. A droplet ejection apparatus includes the capacitive load driving circuit. The nitrogen source materials may be selected from nitrogen compounds that contain hydrogen radicals groups and alkyl radicals groups andor phenyl radicals groups provided that the total amount of hydrogen radicals groups is less than or equal to the sum total of alkyl radicals groups and phenyl radicals groups present in the nitrogen compound used as the nitrogen source material. The RF manager is further for managing a handoff upon the occurrence of a prescribed event, the handoff including a handoff-to-self via a simultaneous base station radio and mobile station frequency transition. The hydraulic circuit includes valving for an automatic re-synchronization cycle, fill cycle, and air purge cycle. The pulse sequences utilize imaging gradients, comprising a positive lobe and a negative lobe having non-symmetric amplitudes, to encode harmonic or wave motion within a specimen, such as tissue.