large rare-earth concentrations
Rare earth element concentrations in dissolved and acid available particulate forms for eastern UK rivers
... AAP REE makes up a significant proportion of the average total concentration. In terms of load, the proportion will be even higher because high SS (and hence high AAP) will be associated with high energy conditions ...
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Bed and suspended sediment-associated rare earth element concentrations and fluxes in a polluted Brazilian river system
... to large specific surface areas, these mineral phases are very effective binding agents for 345 REE, exerting control on their concentration and migration in aqueous systems (Davranche et ...
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A human health risk assessment of rare earth elements in soil and vegetables from a mining area in Fujian Province, Southeast China
... addition, large-scale and rapid in- creases of the exploitation activities of REE resources have resulted in substantial increases the contamination levels of soil and water around the mining area (Liang et ...
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Alain Rollat - Rhodia Rare Earths System. Satisfaire la demande en terres rares : de la mine au recyclage
... Concentration Rare Earth Separation Rare Earth Finishing Rhodia project Rare Earth valorization Eco-organisms.. Recyclage complet des Terres Rares des lampes usagées[r] ...
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Rare earth elements in Australian sediments
... The rare earth data does not rule out any models of continental growth and evolution which allow for crustal stratification via intra- crustal ...the rare earth data to account for the ...
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Electronic Properties of Rare Earth Monopnictides
... density of the conduction electrons. This is due to fact that the plasmon energy depends on the density of the conduction electrons and effective number of the valence electrons, which changes when a metal form a ...
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5.6 Binary rare earth alloys
... different rare earth metals allows almost complete mutual ...fabricate rare earth alloys with nearly uniform electronic properties, but containing ions with disparate magnetic properties, ...
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Preparations of rare earth-iron alloys by thermite reduction
... conditions, to a temperature suf?cient to react the rare An improved method for the preparation of high earth and iron ?uoride mixture with the calcium to form purity rare earth-iron all[r] ...
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Syntheses and Thermal Characterisation of Mixed (Sm-Y) Oxalates Prepared by Coprecipitation Method
... solution rare earth oxides because these oxalates are highly insoluble in ...of rare earth oxides, even if it is vigorously stirred, the conditions for formation of rare earth ...
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Thermal expansion of rare earth metals
... the rare earth metals was undertaken as part of a broad program of study of these elements, the ultimate goal being better understanding of metals in ...The rare earth metals included in this ...
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The ferromagnetic properties of the rare earth metals
... It is to be noted that these absolute saturation moments were obtained using data from the temperature range of 3l0 - 80°K only, and therefore only attempt to point out what the approxim[r] ...
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Multiferroic properties of rare earth manganites
... applied along the c-axis would cause the spins to rotate about c, i.e. in the a-b plane (illustrated in Figure 4.28). Again referring to Equation 1.6, the result of this magnetic reorientation would be a change in the ...
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Palladium-Rare Earth Alloys130-140
... 9 Diffusion coefficients versus temperature for a vacuum annealed and slow cooled palladium-8 atomic per cent yttrium alloy show the different behaviours of the mat[r] ...
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Redox conditions in the Late Cretaceous Chalk Sea: the possible use of cerium anomalies as palaeoredox indicators in the Cenomanian and Turonian Chalk of England
... the rare earth element eu- ropium can occur in either a di- or trivalent ...magma’s rare earth element as- semblage impoverished in this element and the assem- blage in the feldspar crystals ...
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Baddeleyite from Large Complex Deposits: Significance for Archean Paleozoic Plume Processes in the Arctic Region (NE Fennoscandian Shield) Based on U Pb (ID TIMS) and LA ICP MS Data
... LA-ICP-MS has been first applied to study concentrations and distributions of REE in baddeleyite from the deposits. Studying and applying Zr-Ti geochrono- meter for baddeleyite is considered important. New ...
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Spectral changes and wavelength dependent thermoluminescence of rare earth ions after X ray irradiation
... Luminescence studies offer a highly sensitive probe of defect structures in insulating materials with techniques such as photoluminescence (PL), cathodoluminescence (CL), radioluminescence (RL) and thermoluminescence ...
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Optical constants of rare-earth substituted ferrite-
... as the calculated refractive index data points (n 2 values obtained using T M and T m ) are plotted in Fig. It can be noted that the refractive index (n) is in the range of 2.1-2.5 in [r] ...
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A first principles approach to modelling magnetism in strongly correlated electron systems
... Figure 4.1 shows a volume collapse of 24% at the γ → α transition, which compares well with the experimental value of 15-17% and also that obtained from LMTO-ASA calculations, 23%. The overestimate of the volume collapse ...
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Recovery of Rare Earths from Magnet Sludge by FeCl2
... each rare earth can be recovered separately from a waste of mixture of the rare earth magnets by combining the selective reduction-vacuum distillation method and the proposed recycling ...
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Atomizing nozzle and process
... atomizing rare earth-transition metal alloys to form fine powder particles wherein a majority of the powder particles exhibit particle sizes having near-optimum magnetic ...
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