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RARE's Stuart Holliday: Public Diplomacy That Lasts: The Value of International Visitor Exchanges. RARE's Roger Ballentine: Clean Technology Depends on Rare Earth Elements . Rare Earth Elements In The News. China: birth of a new mining giant? 4 Rare Earth Elements That Will Only Get More Important. Postcards From the Rare-Earth Front
Solar eclipses occur when the sun, moon and Earth align. The moon passes between Earth and sun, temporarily blocking the sun's light and casting a shadow on Earth. A total solar eclipse is when ...
Mattocks et al. 2 report a bacterial lanmodulin protein that has about 40-fold higher affinity for ions of lanthanum (La 3+), a light rare-earth element, than for those of dysprosium (Dy 3+), a ...
Production of high-technology products such as smartphones depends crucially on the use of "rare earths," a small group of exotic metals. As it happens, China dominates the production of these rare earths; given possible international tensions,there have been calls for special policies to encourage rare-earth production in the United States.
The Department of Defense (DOD) depends on rare earth materials (rare earths) to provide functionality in weapon systems components. 1. Many steps in the rare earths supply chain, such as mining and refining the ore, are primarily conducted outside the United States, which may pose risks
We document the existence of long-memory effects in the volatility of rare earth elements (REEs) •. Comparing GARCH, short- and long-memory models to describe REEs volatility reveals that a simple ARFIMA (0, d, 0) model shows higher accuracy. •. Results hold for in- and out-of-sample, and are robust for various subsamples and …
The U.S. and most of the world depends on China for many rare earth elements. Through the Office of the Assistant Secretary of Defense for Industrial Base Policy, the Manufacturing Capability ...
Ingenious AI Method Could Find Precious New Rare-Earth Compounds. Physics 23 March 2022. By David Nield. (greenp/iStock) Rare-earth elements are crucial components in all kinds of electronics, from smartphones and broadband cables to wind turbines and electric cars. But coming up with useful compounds that can expand our …
The shape of this surface—and hence the magnetic structure—for the heavy rare earth elements is known to depend on the ratio of the interplanar spacing c and the interatomic, intraplanar ...
Global rare earth element production amounted to an estimated 300,000 metric tons of rare earth oxides in 2022. With the largest known reserves worldwide, it is not surprising that China's rare ...
2.1.2 The Terms 'Rare' and 'Earth'. The name 'Rare Earths' is misleading as the name itself implies an earthen material which is not ubiquitous. To start with the easy part, the word 'earth' was a common denomination for an oxidic material, usually a metal oxide, i.e. a compound of an element with oxygen.
Exploring the Unexpected: An AI Model Uncovers Rare Earth Elements. The increasing demand for critical minerals—the building blocks of an electrified future—is creating opportunities for the oil and gas industry to apply its extensive knowledge, tools, and data to help meet the demand. The oil and gas industry's expertise and technology ...
Rare earth elements (REEs) are increasingly critical to the high-technology and low-carbon economy. With a shift to sustainable socioeconomic development that aims to be less fossil fuel dependent, global demand for REEs continues to rise, despite their uncertain supply chain and high environmental impact of production.
Prices and abundances of the rare earth elements. Prices are for 1999 or 2000 in U.S. dollars per kilogram of REE metal, in two forms: (1) as oxides, in 2 to 25 kg packages, at 95 to 99.99% purity; (2) as 0.1 to 0.45 kg metal ingot, at 99.9% purity. Two representative REE ores—high-grade carbonatite ore from Mountain Pass, California, …
One group of natural resources that may prove essential for the next generation of electric motors and turbines are the rare earth elements (REEs)—17 elements consisting of scandium, yttrium, and the …
Because the binding energy of rare earth ions-O 2- bond is greater than that of Fe 3+ -O 2- bond [15], grain growth is hindered. Light rare earth has little effect, and d is about 1.58 µm for the La, Nd, Sm doped NiZnMn ferrites. However, it is about 1.30 µm for the heavy rare earth doped ferrites.
The Rare Earths Impacts and Conflict Map. The cases of socio-environmental resistance to REE extraction, processing and recycling documented on …
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Rare earth elements (REEs) includes a group of 17 metals: scandium (Sc), yttrium (Y) and the 15 lanthanoid elements lanthanum (La), cerium (Ce), praseodymium (Pr), ... The total REE content highly depends on the parent material and its composition can influence the chemical/physical soil properties. Those play a key role for the vertical ...
A few rare earth elements are used in oil refining and nuclear power; others are important for wind turbines and electric vehicles; and more specialized uses occur in medicine and manufacturing. The rare earths have …
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The influence of the rare-earth ions' concentration is reviewed as well as the plasmonic effects and energy transfer between rare-earth ions. Different situations are discussed using different glassy hosts based on GeO 2 and TeO 2 with metallic (Ag/Au) or dielectric (TiO 2 ) NPs to show different possibilities to optimize photovoltaic devices.
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The photoluminescence behavior of luminescent materials with rare earth (RE) ions as a luminescence center not only depends on the element type and chemical valence of RE ions but also on their concentration and occupation in the matrix, sometimes including the interaction of the matrix and RE ions or between different RE ions. Herein, …
So-called green technologies often depend upon rare earth elements. For instance, Toyota uses an estimated 7,500 tons of lanthanum and 1,000 tons of neodymium per year to build its Prius cars ...
That Depends On Your Definition Of Life : 13.7: Cosmos And Culture As scientists advance their understanding of how the Earth has changed through billions of years, it becomes increasingly clear ...
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In this study, we focus on three processes that are most commonly used to produce rare earth metals. Light rare earths (La, Ce, Nd, Pr) make up over 90% of those produced in China, the majority of ...
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