REMAGNETIZATION OF MINING ORES

Mining Remittances Corresponding to Metalliferous Ores: Regulation and Budget Impact

N. Asaloș, Ovidius University, Faculty of Economics, Constanța, Romania; E. Hlaciuc, Stefan cel Mare University, Doctoral School of Economy, Suceava, Romania; I. Bostan, Stefan cel Mare University, Doctoral School of Economy, Suceava, Romania; T. Roman, Al. I. Cuza University, Faculty of Economics and Business Administration, Iasi, Romania; D. Mateș, West University, Doctoral School of Economy,...

Theory of Thermal Remagnetization of Permanent Magnets

A self-consistent mean-field theory explaining the thermal remagnetization (TR) of polycrystalline permanent magnets is given. The influence of the environment of a grain is treated by an inclusion approximation, relating the field inside the grain to the local field outside by means of an internal demagnetization factor n. For the switching fields and the fluctuations of the local fields aroun...

Thermoviscous Remagnetization in Some Appalachian Limestones

Experimental evidence shows that blocking temperature-relaxation time theory for single-domain magnetite can grossly underestimate laboratory thermal demagnetization temperatures of a present day viscous remanence in Devonian limestones of New York State. Thermoviscous remagnetization at moderately elevated burial temperatures during the late Paleozoic cannot therefore be readily excluded for t...

Answering with Density S ores

Lead and Zinc Ores: Flotation

of isotopically labelled vitamin D metabolites by HPLC. Journal of Chromatography 303: 229}233. Kaspersen FM, van Acquoy J, van de Laar GLM, Wagenaars GN and Funke CW (1984) Deuterium isotope effects in mianserin. Recueil Travaux Chimique de Pay-Bas 103: 32}36. Klein PD (1966) Occurence and signiRcance of isotope fractionation during analytical separation of large molecules. Advances in Chromat...