| http://www.w3.org/ns/prov#value | - Background ArtMinute particulate matters (PM) that might cause an adverse effect on the environment or human health are contained in exhaust gas of an internal combustion engine such as a diesel engine, and soot and soluble organic fraction (SOF) or the like are mixed in the particulate matters.In order to improve the internal combustion engine so as to reduce the particulate matters, it is necess
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