A modular base assembly for a rotary drill head includes a drive flange assembly having a tubular drive shaft configured to engage at least a lower drive interface. The invention allows for the passage of ammonia through microporous hydrophobic gas-permeable membranes and its capture in a circulated stripping solution with concomitant production of a concentrated non-volatile ammonium salt. It further comprises two volume control elements. The chip-type coil component further includes an auxiliary internal electrode laminated on each of the magnetic layers. Region matching based on the keypoints in the intensity-equalized regions can be performed with accuracy even in images captured by asymmetric sensors or exhibiting spatially varying intensity. The seal cover is configured for connection with the seal holder for maintaining the seal within the central passage of the seal holder.