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Beijing has said it is willing to discuss rareearths with Europe.
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In China, prices of some rareearths have fallen sharply since June.
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It has already announced increased export taxes on rareearths in 2011.
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China controls roughly 90 percent of the world's supply of rareearths.
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Its loparite concentrate holds light rareearths such as lanthanum and cerium.
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Two structural types of lanthanide selenidostannates were obtained across the lanthanideseries in both systems.
Usage of lanthanide in English
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A family of lanthanide-based responsive luminescent probes for multiplex detection is reported.
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This final geological event exposed the lanthanide-rich rock for easy mining near Ytterby.
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Few elements beyond cerium, the second lanthanide, were known in 1869.
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Two structural types of lanthanide selenidostannates were obtained across the lanthanide series in both systems.
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The spectrum of applications can be extended if magnetooptical properties of lanthanide dopants are well understood.
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A novel gas sensing mechanism exploiting lanthanide luminescence modulation upon NO 2 adsorption is demonstrated here.
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These mechanisms suggest design rules for electronic level structures that yield robust color tuning in lanthanide-doped upconverting nanoparticles.
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We present here the first examples of lanthanide ion complexes with only isophthalic acid or thiophenylisophthalic acid ligands.
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It's impossible to find a pure sample of a lanthanide in nature, since its brothers always contaminate it.
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Therefore, the different alginate-lanthanide microsphere formulations developed in this study show great potential for utilization as image-guided embolotherapy agents.
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Whereas this chemistry is intensively explored for transition-metal and lanthanide ions, any related actinide compound has not received attention.
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Our system is the first demonstration of the optical imaging of discrete luminescent lanthanide complexes without external short-wave excitation.
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Due to their photon up-converting capability, lanthanide ions are ideal candidates dopants for semiconductors for developing visible light-driven photocatalytic activity.
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The sensitivity of coumarin photophysics to the 7-substituent enables modulation of the antenna-absorption properties, and thus the lanthanide excitation spectrum.
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However, the complex, overlapping emission spectra of lanthanide ions can hinder the quantitative imaging of samples labeled with multiple upconverting probes.
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The local environments within an amphiphilic polymer shell wrapped around lanthanide-doped upconverting nanoparticles were probed using steady-state and time-resolved fluorescence spectroscopy techniques.