Results 21 to 30 of about 493,260 (275)

Geochemical characteristics and mining prospects of REE in Lugou coal mine of Xinmi coalfield

矿业科学学报, 2020
The content of rare earth elements and their occurrence characteristics under low temperature ashing conditions in Lugou coal mine of Xinmi coalfield were studied by XRD, XRF and ICP-MS analysis techniques.The results show that the total content of rare ...
Luo Zhonggeng, Li Chunhui, Wang Shikui, Liang Handong   +3 more
doaj   +1 more source

Geochemical Characteristics of Limestone of Wonosari-Punung Formation, Gunungkidul Regency, Yogyakarta, Indonesia

Indonesian Journal on Geoscience, 2018
DOI: 10.17014/ijog.5.2.179-197A geochemical study was carried out to determine the geochemical characteristics of limestone in Wonosari-Punung Formation, and to suggest its depositional conditions and the source of rare earth elements.
Didik Dwi Atmoko, Anastasia Dewi Titisari, Arifudin Idrus   +2 more
doaj   +1 more source

Standard model of the rare-earths, analyzed from the Hubbard I approximation [PDF]

, 2016
In this work we examine critically the electronic structure of the rare-earth elements by use of the so-called Hubbard I approximation. From the theoretical side all measured features of both occupied and unoccupied states are reproduced, without ...
Bergman, A., Bergqvist, L., Delin, A., Di Marco, I., Eriksson, O., Johansson, B., Katsnelson, M. I., Klautau, A. B., Kvashnin, Y. O., Lichtenstein, A. I., Locht, I. L. M., Pereiro, M., Rodrigues, D. C. M.   +12 more
core   +2 more sources

Rare Earth Elements in Wetlands

, 2016
International ...
Davranche, Mélanie, Gruau, Gérard, Dia, Aline, Bouhnik-Le Coz, Martine, Marsac, Remi, Pédrot, Mathieu, Pourret, Olivier   +6 more
openaire   +3 more sources

Growth of superconducting single-crystalline (Lu, Ca)Ba2Cu3O7-d whiskers [PDF]

, 2008
Single-crystalline (Lu, Ca)Ba2Cu3O7-d (Lu(Ca)123) whiskers have been successfully grown using the Te-doping method. X-ray diffraction patterns of Lu(Ca)123 whiskers showed sharp (0 0 l) peaks corresponding to REBa2Cu3O7-d phase (RE = rare earth elements).
Deguchi, K., Ishii, S., Kubo, Y., Mizuguchi, Y., Nagao, M., Nagasawa, M., Ogawara, S., Okutsu, T., Takano, Y., Tomioka, F., Tsuda, S., Watanabe, T., Yamaguchi, T.   +12 more
core   +1 more source

Time-resolved spectroscopy of the rapidly oscillating Ap star KIC 10195926 [PDF]

, 2014
We report an analysis of high time resolution spectra of the chemically peculiar Ap star KIC 10195926 obtained with the Subaru telescope. We find that the star has low overabundances of rare earth elements compared with other rapidly oscillating Ap stars.
Elkin, V. G., Kurtz, D. W., Saio, H., Shibahashi, H.   +3 more
core   +1 more source

Superconductivity and Magnetism in REFeAsO1-xFx (RE=Rare Earth Elements)

, 2008
Fluoride-doped iron-based oxypnictides containing rare-earth gadolinium (GdFeAsO0.8F0.2) and co-doping with yttrium (Gd0.8Y0.2FeAsO0.8F0.2) have been prepared via conventional solid state reaction at ambient pressure.
A Goya, Chen G F, Cheng P, Chong S V, K Kadowaki, Ren Z-A, S V Chong, Shirage P M, T Mochiji, Wang C, Yang J, Zocco D A   +11 more
core   +1 more source

Opportunities for plasma separation techniques in rare earth elements recycling

, 2017
Rare earth elements recycling has been proposed to alleviate supply risks and market volatility. In this context, the potential of a new recycling pathway, namely plasma mass separation, is uncovered through the example of nedodymium - iron - boron ...
Fisch, Nathaniel J., Gueroult, Renaud, Rax, Jean-Marcel   +2 more
core   +3 more sources

No Heavy Element Dispersion in the Globular Cluster M92 [PDF]

, 2011
Although there have been recent claims that there is a large dispersion in the abundances of the heavy neutron capture elements in the old Galactic globular cluster M92, we show that the measured dispersion for the absolute abundances of four of the rare
Buonanno, Cohen, Cohen, Cohen, Cutri, Da Costa, Houdashelt, Kurucz, Lawler, Lawler, McWilliam, Otsuki, Ralchencko, Roederer, Skrutskie, Sneden, Sneden, Yong   +17 more
core   +3 more sources

Determination of Major and Rare Earth Elements in Rare Earth Ores by X-ray Fluorescence Spectrometry with Fusion Sample Preparation

Yankuang ceshi, 2018
BACKGROUND The analysis of ore samples by X-ray Fluorescence Spectrometry (XRF) has the advantages of quantitative accuracy, less reagent and good reproducibility.
ZHOU Wei, ZENG Meng, WANG Jian, ZHANG Lei, LI Ying-chun   +4 more
doaj   +1 more source