Results 21 to 30 of about 153,181 (314)
Archives of Acoustics, 2019 The article describes the method of controlling the recovered grade based on measuring the intensity of volume ultrasonic oscillations and Lamb waves covering a fixed distance through the test medium and on a metal plate contacting the test medium at ...
Vladimir MORKUN +5 more
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Geological features and genesis of the Dyusembay Central (Sayakhat) ore deposit
Руды и металлы, 2022 The article considers the geological features and ore composition of the Dyusembay Central (Sayakhat) lead-zinc deposit in the Karsakpai metallogenic complex in the Central Kazakhstan.
Galym Zh. Nurzhanov +5 more
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Nature, 1884 MY attention has lately been drawn to a review in NATURE for April 17 of a work on “The Ores of Leadville and their Mode of Occurrence,” by Mr. L. D. Ricketts, from which one would be led to suppose that all the facts mentioned were due to original investigation on the part of the author.
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Journal of the European Mathematical Society, 2010 The Ore conjecture, posed in 1951, states that every element of every finite non-abelian simple group is a commutator. Despite considerable effort, it remained open for various infinite families of simple groups. In this paper we develop new strategies, combining character-theoretic methods with other ingredients, and use them to establish the ...
Martin W. Liebeck +3 more
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Multi-Scale X-Ray Computed Tomography Analysis to Aid Automated Mineralogy in Ore Geology Research
Frontiers in Earth Science, 2021 Ore characterization is crucial for efficient and profitable production of mineral products from an ore deposit. Analysis is typically performed at various scales (meter to microns) in a sequential fashion, where sample volume is reduced with increasing ...
Mathis Warlo +6 more
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Jhamarkotra phosphate ore processing plant
, 2009 : Low grade phosphate ore of Jhamarkotra that analyzes 16.5% P~2~O~5~ is upgraded to 34% P~2~O~5~ by a two stage flotation process after size reducing the ore to 90% passing through 200mesh using conventional equipment such as jaw and cone crushers ...
Sekhar Dmr, C.L Jain
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Mineral resource base of Russia’s copper: current state and development prospects
Горные науки и технологииThis study addresses the need for a comprehensive understanding of current state of Russia’s cupper mineral resource base. Its objective is to assess Russia’s copper reserves (balance reserves and forecast resources), analyze the spatial distribution of ...
Grigory Yu. Boyarko +2 more
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Bacterial, Archaeal, and Eukaryotic Diversity across Distinct Microhabitats in an Acid Mine Drainage
Frontiers in Microbiology, 2017 Acid mine drainages are characterized by their low pH and the presence of dissolved toxic metallic species. Microorganisms survive in different microhabitats within the ecosystem, namely water, sediments, and biofilms.
Victoria Mesa +7 more
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Desingularization of Ore operators
Journal of Symbolic Computation, 2016 We show that Ore operators can be desingularized by calculating a least common left multiple with a random operator of appropriate order. Our result generalizes a classical result about apparent singularities of linear differential equations, and it gives rise to a surprisingly simple desingularization algorithm.
Shaoshi Chen +2 more
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