“…Mechanical processing is just one step in the value chain of metal production, but to some exten,t it determines an effectiveness of separation through suitable preparation of the raw material for beneficiation processes through production of required particle sze composition and useful mineral liberation. The issue is mostly related to techniques of comminution and size classification, but it also concerns methods of gravity separation, as well as modeling and optimization. …”

“…Two new sources related to this controversy are presented: an annotated copy of Jordanus de Nemore's "Liber de ponderibus" edited by Petrus Apianus in 1533 and an annotated copy of Giovanni Battista Benedetti's "Diversarum speculationum mathematicarum et physicarum liber" from 1585. …”

“…He employs innovative concepts to measure the quality of and prospects for democracy in the Balkan region, arguing that procedural indicators of democratization do not adequately describe the stability of liberalism in post-communist states. This unique perspective on developments in the region provides relevant lessons for regime change in the larger post-communist world. …”

“…As of October 2012, over 400 liberalized agreements were reached among 145 economies, among which more than 100 were U.S. open-skies agreements (ICAO 2013). …”

“…In the reign of Alexander II (1855-1881), local police forces took on new importance. The liberation of 23 million serfs from landlord control, growing fear of crime, and the terrorist violence of the closing years challenged law enforcement with new tasks that made worse what was already a staggering burden. …”

“…. -- Paul as user, interpreter and reader of the book of Isaiah / Florian Wilk. -- The liberation of Israel in Luke-Acts: intertextual narration as countercultural practice / Richard B. …”