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Summaries of technical papers

Preparing for Euro VII : Sub-23 nm particles

Starting with Euro 7 regulations in Europe, particles down to 10 nm will be counted and regulated, a change from the current cut-off of 23 nm, reflecting both the increasing awareness of health impact due to ultra-fine particles and also improved measurement capabilities. We give an overview of the issue.

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A good review of lithium-ion battery cost reductions

This publication by Micah Ziegler and Jessika Trancik from MIT explores the correlation of the decline in price with improved technology (Moore’s Law), cumulative production (Wright’s Law), annual production (Goddard’s Law) and R&D activity as measured via patent filings.

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