The manufacturing industry is faced with a challenge to create products with less environmental impact targeting a sustainable society. To cope with this challenge, sustainable design or ecodesign plays one of the most important roles. Manufacturers often use ecodesign checklists that are intended for obtaining eco-labels, such as Eco Mark in Japan, in order to support design improvements of products in terms of environmental consciousness. Eco-label checklists are, however, insufficient to support designing products rationally because the relationships between individual requirements of checklists and environmental impact are undetermined. This paper proposes a method for supporting assessment for ecodesign by developing a weighted checklist from a conventional eco-label checklist. This weighted checklist assesses the environmental performance of a product based on the potential environmental improvement of each requirement, derived by life cycle simulation. Results of a case study involving a digital duplicator indicate that the proposed method successfully clarifies the requirements that should be improved in the present product. When the design improvements are applied, the assessment of the product’s CO2 emissions shows an improvement by 8%.

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On the basis of the success or failure of reconstitution of the Z-disks, we proposed that the proteins required for this, i.e., the principal constituents of the Z-disk, were Z-nin (a high molecular weight protein of 300,000-400,000 dalton named by us), a-actinin and 34,000 dalton protein.1* The indirect immunofluorescent localizations of Z-nin and 34,000 dalton protein have already been published.2'3* This paper describes the immunoelectron microscopic localization of Z-nin and 34,000 dalton protein in the Z-disk to elucidate the relationship between the structure of the Z-disk and the Z-disk constituents. Z-nin and 34,000 dalton protein were prepared from rabbit skeletal muscle according to the procedures described in a previous report.1* The solution of Z-nin or 34,000 dalton

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Environmentally conscious design or ecodesign plays one of the most important roles to create products with less environmental impact targeting the sustainable society. Manufactures often use checklists to support design improvements of products and to obtain eco-labels, such as Eco Mark in Japan. Current checklists are, however, insufficient to support designing products rationally because the relationship between the individual requirements of current checklists and environmental impact is undetermined. This paper proposes a method for supporting ecodesign assessment by developing a weighted checklist from a conventional checklist. This weighted checklist calculates ecodesign achievement based on the potential environmental improvement of each requirement, derived by the life cycle simulation. The result of a case study involving a digital duplicator showed the proposed method successfully clarified requirements that should be improved in the present product. When design improvements are applied, the assessment of the product’s CO2 emission is improved by 8%.