If JR is a ring, and G is a group of automorphisms of R, then R denotes the subring of R consisting of elements of R left fixed by every element of G, and is called the Galois subring corresponding to G. In his paper, Groups acting on hereditary rings, G. M. Bergman has asked if every Galois subring of a right Ore domain corresponding to a finite group is itself right Ore. In this note we show ...

A review of large scale applications of high current and high field superconductivity is given. Requirements to and properties of technically used superconductors are discussed. Superconducting magnets as research tools are widely used in elementary particle and solid state research. Applications of superconductivity for industrial purposes seem to be promising for electrical machinery, magneti...

The relations between evaluation of Ore polynomials and pseudo-linear transformations are studied. The behavior of these transformations under homomorphisms of Ore extensions, in particular with respect to algebraicity, is analyzed leading to characterization of left and right primitivity of an Ore extension. Necessary and sufficient conditions are given for algebraic pseudo-linear transformati...

Mining in its broadest sense is the process of obtaining useful minerals from the earth’s crust. A mineral is generally defined as any natural accruing substance of definite chemical composition and consistent physical properties. An ore is a mineral or combination of minerals from which a useful substance, such gold, can be extracted and marketed at a price that will recover the costs of minin...

Abstract Microwave irradiation is a potential technology for use in rock fracturing. It of great significance the application microwave metal mines to understand cracking characteristics ores and mechanism action ores. Taking Hongtoushan copper ore, Sishanling iron Dandong gold ore as research objects, with different morphologies (bulk/particle samples) particle sizes were investigated. The was...

This research is aimed at the up-gradation of indigenous Pakistani iron ore, i.e., Dilband ore (hematite), by utilizing common metallurgical processes. First, magnetic properties were determined. Initially, samples contained 34 wt. % Fe in addition to other gangue materials. Therefore, was subjected a high-temperature reduction roasting process between 800 °C and 1000 °C. Additionally, separati...

This contribution illustrates the procedures of calculating rare earth element (REE) patterns of magmatic fluids in equilibrium with granitic melts. These patterns can then be compared to those of altered and (or) mineralized rocks in order to investigate the source of the ore-fluids. This technique is applied to the Lake George Sb-Au-W-Mo mineral deposit, New Brunswick, Canada. The results sug...