Results 241 to 250 of about 493,260 (275)

Rare earth elements distribution in the river sediments of Ditrău Alkaline massif, Eastern Carpathians. [PDF]

PLoS One
Coțac VN, Iancu OG, Necula N, Sandu MC, Loghin AA, Chișcan O, Stoian G.   +6 more
europepmc   +1 more source

Recycling of Rare Earth Elements: From E-Waste to Stereoselective Catalytic Reactions. [PDF]

ChemSusChem
Donato E, Medici F, Chiroli V, Puglisi A, Rogoli C, Fröhlich P, Bertau M, Zanoni G, Benaglia M.   +8 more
europepmc   +1 more source

Probing the potential of rare earth elements in the development of new anticancer drugs: single molecule studies. [PDF]

Beilstein J Nanotechnol
Batista JAD, de Oliveira RM, Lima CHM, Lana Júnior ML, Dos Anjos VC, Bell MJV, Rocha MS.   +6 more
europepmc   +1 more source

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Scarcity of Rare Earth Elements

ChemSusChem, 2013
AbstractRare earth elements (REEs) are important for green and a large variety of high‐tech technologies and are, therefore, in high demand. As a result, supply with REEs is likely to be disrupted (the degree of depends on the REE) in the near future. The 17 REEs are divided into heavy and light REEs. Other critical elements besides REEs, identified by
de Boer, M.A., Lammertsma, K.
openaire   +3 more sources

Biosorption of Rare Earth Elements

Mineral Processing and Extractive Metallurgy Review, 1998
Abstract By using X-ray microanalysis, the mechanism of sorption of rare earth elements (REE) and their localization in cells of Candida utilis were found to depend on the metal ion speciation in solution, the permeability of the cytoplasmic membrane (CPM), and elemental composition of cells.
A.A. Korenevsky, V.V. Sorokin, G.I. Karavaiko   +2 more
openaire   +1 more source

Rare-Earth Elements in Tektites

Science, 1963
The rare-earth element content of three tektites has been determined by neutron activation analysis. The relative abundance patterns are all nearly alike and are identical to the pattern characteristic of well-differentiated terrestrial sediments. Possible consequences of finding this pattern in truly extraterrestrial matter are considered.
L, Haskin, M A, Gehl
openaire   +2 more sources

The Rare-Earth Elements

2023
In this section, the elemental forms of rare-earth elements are iron gray to silvery lustrous metals that are typically soft, malleable, ductile, and usually reactive, especially at elevated temperatures or when finely divided. rare-earth elements are examined in terms of physical and chemical properties. This makes them essential components of diverse
Mikail Aslan, Cengiz Bozada
openaire   +1 more source

Rare-Earth and Transuranic Elements

Physical Review, 1941
Verf. zeigt das starke Absinken der Energie und das Schrumpfen der räumlichen Ausdehnung der \(4f\)- bzw. \(5f\)-Eigenfunktion beim Überschreiten der ungefähren Kernladungszahl \(Z = 57\) bzw. \(Z = 92\). Dieses Vorkommnis bedeutet, daß von diesen Ordnungszahlen ab die \(4f\)- bzw. \(5f\)-Bahnen zu inneren Elektronenbahnen werden.
openaire   +1 more source

The Rare-earth Elements

1971
Mossbauer spectroscopy of the rare-earth elements as a group has gained considerable attention from physicists. Successive addition of 4f-electrons along the series has little influence on many of the chemical properties, which are mainly those of a tripositive cation.
N. N. Greenwood, T. C. Gibb
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Rare earth element geochemistry of kimberlite

Physics and Chemistry of the Earth, 1975
Abstract Abundances of rare earth elements (REE), Sc, Co, Hf, Ta and Th have been determined by neutron activation analysis in kimberlites from the Wesselton pipe, in micaceous kimberlites from the Swartruggens fissure and kimberlite from the Monastery Mine, Ison Creek and Somerset Island pipes. Kimberlites are characterized by a high REE content and
ROGER H. MITCHELL, ARILD O. BRUNFELT
openaire   +1 more source