73 巻 (1994) 12 号 p. 1075-1079
The softwere for the life cycle assessment named “NIRE-LCA” was developed by authors. In this softwere, both input and output data concerming energy and materials were registerd in every processes and they were cited in the tree and branch form in order to calculate inputs and emissions totally, when the life cycle assessment of a product was carried out. This softwere has also the evaluation system of the environmental performance about the total inputs and emissions obtained by the above calculation.