The method further includes flowing a liquid reactant film down inner surfaces of {TAIL ~ the first plurality} of cells while flowing {HEAD ~ a gaseous reactant stream} up or down the centers of the first plurality of cells, while flowing at least a first heat exchange fluid through the at least one fluidic passage 
The method further includes flowing a liquid reactant film down inner surfaces of { TAIL ~ the first plurality } of cells while flowing { HEAD ~ a gaseous reactant stream } up or down the centers of the first plurality of cells , while flowing at least a first heat exchange fluid through the at least one fluidic passage
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH