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.

Abstract The mining machine for bauxite is the key equipment mechanized of underground ore. machines shearing and loading ore have been studied in this paper from three aspects: determination technical parameters, in-situ tests, optimization, improvement. Mechanical physical parameters ore, such as high tensile strength, no-cleavage, abrasion properties, a great impact on machine. conventional ...

The drum agglomeration of nickel laterite and gold ores has been optimized through the design of experiments (DOE) using a Taguchi L16 (45) orthogonal array to determine the optimum conditions for maximizing average agglomerate size and minimizing the amount of fines. The effects of controllable operating factors including moisture content (nickel laterite ore: 34-37%; gold ore: 7-10%), retenti...

The reserve of the copper-oxide-bearing limonite ore (COBL ore) in Yulong Copper Co., Ltd. is up to 20 million tons with 1.79% copper content. characters resources COBL are high-proportioned oxidation state (99.98%) and combined (84.83%). oxide mainly limonite, which has a content more than 78%. Because high altitude average annual temperature 15 °C Tibet, fire leaching cannot be adopted. effic...

Unreasonable storage of phosphate ore is becoming an important pathway causing pollution in the surrounding aquatic environment. However, there little research on influence dissolved organic matter (DOM) water fate ore. Here, we collected ores from two mines along coast Tanglang River and studied effects DOM concentrations pH release soluble active phosphorus (SRP) fluoride ion (F−) using humic...

A native microorganism, Penicillium citrinum was isolated from the top soil of a manganese mine. Based on its efficiency for manganese solubilisation, it was utilized for the leaching of a low-grade manganese ore. The effects of various parameters such as pulp density, particle size, sucrose concentration, inoculum size and bioleaching duration on manganese ore were studied. The optimised condi...

While the number and size of Semantic Web knowledge bases increases, their maintenance and quality assurance are still difficult. In this article, we present ORE, a tool for repairing and enriching OWL ontologies. State-ofthe-art methods in ontology debugging and supervised machine learning form the basis of ORE and are adapted or extended so as to work well in practice. ORE supports the detect...

Leonardo Testi1 and Anneila I. Sargent California Institute of Te hnology, MS 105-24, Pasadena, CA 91125 Abstra t. We review some of the basi guidelines used to plan, exe ute and analyse multield observations at the Owens Valley Radio Observatory millimeter wave array. As a working example we dis uss our observations of the inner 50.5 50.5 of the Serpens loud ore. The results of our observation...