A process flow diagram (PFD) is a graphical representation of the main equipment, piping, and streams involved in a chemical or industrial process. It is an essential tool for Front End ...

Several diagrams and drawings are used, depending on the development or industrialization stage of a process. Among these, the process flow diagram is important: it shows the sequence of unit ...

In this paper, we introduce a new method of modeling tool for a biological process -central dogma. The data-flow diagram is used as a representation of the whole data input and output, which enables ...