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Robust Multi-Objective Optimization of Chromatographic Rare Earth Element Separation

Rare earth elements are strategic commodities in many countries, and an important resource for the growing modern technology industry. As such, there is an increasing interest for development of rare earth element processing, and this work is a part of further development of chromatography as a rare earth element separation process method. Process optimization is pivotal for process development, a

How Costly was the Crisis of the 1990s? A Comparative Analysis of the deepest Crises in Finland and Sweden over the last 130 Years

In the 1990s the world economy was hit by a series of unusually deep crises with far-reaching consequences, the first of which occurred in Finland and Sweden. This paper compares the cost of the crisis of the 1990s with the costs caused by all major crises and depressions since the 1870s in the two Nordic countries. First, it constructs a crisis chronology for Finland and Sweden. Second, it estima

Robust Multi-objective Optimization of Rare Earth Element Chromatography

Rare earth elements comprise the metallic elements known as lanthanides as well as scandium and yttrium. They are extensively used in modern technological industries and are considered as strategic commodities in many countries. Rare earth element minerals with varying compositions are found at deposits throughout the world, though most of the global REE supply comes from only a few sources. The c