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The helix of sustainability - the Carbon cycle ideal for manufacture and use The international recycling symbol - not nature identical.. The helix of sustainability is a concept coined to help the manufacturing industry move to more sustainable practices by mapping its models of raw material use and reuse onto those of nature.
The triple helix model of innovation, as theorized by Etzkowitz and Leydesdorff, is based on the interactions between the three following elements and their associated 'initial role': [9] universities engaging in basic research, industries producing commercial goods and governments that are regulating markets. [2]
The word sopo is a Batak word which indicates a structure which is used to store items, whether it is to store rice (sopo eme, eme means "rice"), war trophies (e.g. wild boar or human skulls, or the smoked and dried hands of the enemies), or magic ritual items (e.g. the pustahas or magic batons). [1]