An object of the present invention is to provide a novel compound having antimalarial acitivity and an antimalarial agent containing the novel compound as an active component. The partition wall is designed so that the depths of the charging channels in the charging chamber and the depths of the distribution channels in the adjoining cathode chambers change in such a way that the quantity of oxidant that is charged at a charging spot from the charging chamber into the cathode chamber can be fixed in advance. The distal end is for insertion into a body cavity. The second plurality of features may be offset with respect to and partially overlapping the first plurality of features. The relative position can be rotational position or can be converted to an axial position. In embodiments, a plurality of vortex generators are attached in span-wise alignment on an deice boot along the wing’s leading edge.