The method further includes flowing {HEAD ~ a liquid reactant film} down inner surfaces of the first plurality of cells while flowing 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 {TAIL ~ the at least one fluidic passage} 
The method further includes flowing { HEAD ~ a liquid reactant film } down inner surfaces of the first plurality of cells while flowing 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 { TAIL ~ the at least one fluidic passage }
OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL