Results 21 to 30 of about 198,936 (307)
Estimation of ore contour movements after the blast using the BMM system
Записки Горного института, 2020 Measurement of ore movements by blast is one of the key components of the quality control system at any mining enterprise, which allows to obtain the accuracy necessary for determining the location of ore contours. About 15 years ago, a monitoring system
Ruslan A. Rakhmanov +2 more
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ON THE COMPLETENESS OF URANIUM LEACHING IN THE STACK
Известия Томского политехнического университета: Инжиниринг георесурсов, 2022 The relevance of the problem of increasing the efficiency of using the metallic mineral resources extracted from the bowels on the earth's surface is explained by the increasing demand of industrial metals to meet the vital queries of the human.
Vladimir I. Golik +2 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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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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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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Chinese resource security policies and the restructuring of the Asia-Pacific iron ore market [PDF]
, 2012 This paper reviews the restructuring of the Asia-Pacific iron ore market in the wake of the rise of the Chinese steel industry. Prior to the 2000s, this market was characterised by two key features-high firm-level concentration on both the producer and ...
Wilson, J.D.
core
Advanced Engineering Materials, EarlyView.Sustainability assessment requires methodologies that appropriately distinguish between additive and non‐additive material properties. A toxicity‐weighted scoring system is developed and applied that accounts for the disproportionate influence of highly toxic constituents through nonlinear weighting functions, providing more realistic estimates than ...
Seth Mehalic +2 more
wiley +1 more source
The effect of ore blends on the mineral processing of platinum ores [PDF]
, 2011 Includes abstract.Includes bibliographical references (leaves 96-101).This thesis investigates the effect of ore blends on milling and flotation performance.
Van Tonder, Erika
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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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Advanced Functional Materials, EarlyView.Poly(acrylic acid) acts as a reaction‐time pH buffer during hydrothermal Sb2(S,Se)3 growth through its COOH/COO‐ equilibrium. When combined with ethanol‐regulated growth, this buffering strategy reduces Sb‐O related surface disorder, improves local electronic uniformity and carrier collection, and increases the champion solar‐cell efficiency to 10.25%,
Juhee Lee +7 more
wiley +1 more source