proton exchange membrane fuel cells (pemfcs) with a dead-ended anode and cathode can obtain high hydrogen and oxygen utilization by a comparatively simple system. nevertheless, the accumulation of the water in the anode and cathode channels might cause a local fuel starvation degrading the performance and durability of pemfcs. in this study, a brand new design for a polymer electrolyte membrane...

electrochemical impedance spectroscopy (eis) is a suitable and powerful diagnostic testing method for fuel cells (fcs) since it is non-destructive and provides useful information about fc performance and its components. in this study, for the first time, a 500w cascade type 4 cells stack with integrated humidifier, water separator and internal manifolds was designed, fabricated and tested. the ...

Electrochemical impedance spectroscopy (EIS) is a suitable and powerful diagnostic testing method for fuel cells (FCs) since it is non-destructive and provides useful information about FC performance and its components. In this study, for the first time, a 500W cascade type 4 cells stack with integrated humidifier, water separator and internal manifolds was designed, fabricated and tested. The ...

Proton exchange membrane fuel cells (PEMFCs) with a dead-ended anode and cathode can obtain high hydrogen and oxygen utilization by a comparatively simple system. Nevertheless, the accumulation of the water in the anode and cathode channels might cause a local fuel starvation degrading the performance and durability of PEMFCs. In this study, a brand new design for a polymer electrolyte membrane...

The four different types of stack filters, type-0 through type-3, are determined by four different shapes of the on-set of the positive Boolean function from which the stack filter is constructed. Under all three appending strategies commonly considered in the literature---first and last value carry-on strategy, constant value carry-on strategy, and the circular approach--stack filters of type-...

The four direrent types of stack filters, type-0 through type-3, are determined by four dfferent shapes of the on-set of the positive Boolean function from which the stack filter is constructed. Under all three appending strategies commonly considered in the literature --first and last value carry on strategy, constant value carry on strategy, and the circular approach -stack filters of type-0 ...

Data Types have Existential Types data Stack a = forall s. Stack s -self (a->s->s) -push (s->s) -pop (s->a) -top (s->Bool) -empty push :: a -> Stack a -> Stack a push x (Stack s push’ pop top empty) = Stack (push’ x s) push’ pop top empty pop :: Stack a -> Stack a pop (Stack s push pop’ top empty) = Stack (pop’ s) push pop’ top empty A Framework for Extended Algebraic Data Types – p.6 Abstract ...