Their problem was that both the membrane current l M and the membrane potential V M are also changing constantly during the action potential. Now if one of these variables could be held constant during the action potential (i.e., V M), measurement of l M would enable them to calculate g M at any instant.
The CMMi Easy button notes on Product Integration (PI) Process Area Product Integration (PI) is one of the core Engineering Process Areas within CMMi, this process is concerned with assembly of product components to build the finished software product.
Definition of product for English Language Learners. : 1  something that is made or grown to be sold or used. : 2  something that is the result of a process. : 3  someone or something that is produced or influenced by a particular environment or experience.