Study of the kinetics of the electrolytic separation of hydroxide deposits of rare-earth elements

1968 ◽  
Vol 24 (5) ◽  
pp. 568-568 ◽  
Author(s):  
N. E. Brezhneva ◽  
Yu. I. Kapshaninov ◽  
S. N. Oziraner
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Kinetics Of

scholarly journals Leaching Kinetics of Praseodymium in Sulfuric Acid of Rare Earth Elements (REE) Slag Concentrated by Pyrometallurgy from Magnetite Ore

2015 ◽  
Vol 53 (1) ◽  
pp. 46-52
Author(s):  
Chul-Joo Kim ◽  
Ho-Sung Yoon ◽  
Kyung Woo Chung ◽  
Jin-Young Lee ◽  
Sung-Don Kim ◽  
...  
Keyword(s):  
Rare Earth ◽  
Sulfuric Acid ◽  
Rare Earth Elements ◽  
Leaching Kinetics ◽  
Magnetite Ore ◽  
Kinetics Of

A Study of the Migration and Adsorption Kinetics of Rare Earth Elements in Soils

1999 ◽  
Vol 315-317 ◽  
pp. 520-524 ◽  
Author(s):  
Zeng Liang Gao ◽  
W. Hong ◽  
B. Xiong ◽  
W. Zheng ◽  
Y. Wu
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Adsorption Kinetics ◽  
Kinetics Of

Incorporation kinetics of rare‐earth elements in Si during molecular beam epitaxy

1995 ◽  
Vol 67 (2) ◽  
pp. 235-237 ◽  
Author(s):  
K. Miyashita ◽  
Y. Shiraki ◽  
D. C. Houghton ◽  
S. Fukatsu
Keyword(s):  
Rare Earth ◽  
Molecular Beam Epitaxy ◽  
Rare Earth Elements ◽  
Molecular Beam ◽  
Kinetics Of

Extraction Kinetics of Rare Earth Elements with sec-Octylphenoxy Acetic Acid

2010 ◽  
Vol 20 (6) ◽  
pp. 545-549 ◽  
Author(s):  
Shan-Tang Yue ◽  
Wu-Ping Liao ◽  
De-Qian Li ◽  
Qiang Su
Keyword(s):  
Acetic Acid ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Extraction Kinetics ◽  
Kinetics Of

Solvent extraction kinetics of rare earth elements

Talanta ◽  
1996 ◽  
Vol 43 (10) ◽  
pp. 1721-1725 ◽  
Author(s):  
J GAO ◽  
B PENG ◽  
H FAN ◽  
J KANG
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Rare Earth Elements ◽  
Extraction Kinetics ◽  
Kinetics Of ◽  
Solvent Extraction Kinetics

scholarly journals Profiles of faecal output of rare earth elements and stable isotopic tracers of iron and zinc after oral administration

2000 ◽  
Vol 84 (5) ◽  
pp. 605-617 ◽  
Author(s):  
Ulvi Ulusoy ◽  
John E. Whitley
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Rare Earth Element ◽  
Healthy Subjects ◽  
Earth Element ◽  
Isotopic Tracers ◽  
Excretion Kinetics ◽  
Faecal Samples ◽  
Stable Isotopic ◽  
Kinetics Of

The objectives of this study were to confirm the non-absorbability and the reproducibility of faecal excretion kinetics of orally administered rare earth elements, and to investigate the excretion profiles of rare earth elements and stable isotopic tracers of Fe and Zn to establish the extent to which rare earth element markers duplicate the behaviour of isotopic tracers. Two investigations were performed: (1) six healthy subjects consumed a solution containing five rare earth elements in amounts varying from 1 to 10 mg; (2) seven healthy subjects were given a standard solution labelled with Sm marker and57Fe tracer, and a meal labelled with Yb marker and58Fe and70Zn tracers. Individual faecal samples were collected and analysed to determine recoveries of rare earth elements and unabsorbed isotopic tracers. The mean values for recoveries were 94·1 (SD 4·5) % FOR THE FIVE RARE EARTH ELEMENTS, AND 103 (sd 3·0) % and 99·8 (sd 2·8) % for Sm and Yb respectively. For Fe consumed with the solution, excretion kinetics of the rare earth element marker and unabsorbed tracers with cumulative collections of the first two and three faecal samples were identical, but endogenous excretion of Fe was significant (P<0·05) in stools collected after the third. For Fe and Zn consumed with the meal, the excretion kinetics for the first two individual faecal samples and composites of sequential outputs were identical. Rare earth elements can be used as markers in studies of measurement of absorption. The dose of tracer required for the measurement of absorption would be reduced proportionally to the reduction of the period of faecal sampling, so that studies with stable isotopes would be more economical, thus enabling epidemiological investigations.

Compositional Effects on the Restoration Behaviour in Mg-Zn-RE Alloys

2013 ◽  
Vol 765 ◽  
pp. 18-22 ◽  
Author(s):  
Nigel G. Ross ◽  
Matthew R. Barnett ◽  
Aiden G. Beer
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Zinc Concentration ◽  
Zinc Level ◽  
Rare Earth Alloy ◽  
The Matrix ◽  
Rare Earth Additions ◽  
Double Hit ◽  
Kinetics Of ◽  
Zn Alloys

Additions of rare earth elements to magnesium alloys are qualitatively reported in the literature to retard recrystallisation. However, their effect in the presence of other (non-rare earth) alloy additions has not been systematically shown nor has the effect been quantified. The microstructural restoration following the hot deformation of Mg-xZn-yRE (x= 2.5 and 5 wt.%,y= 0 and 1 wt.%, and RE = Gd and Y) alloys has been studied using double hit compression testing and microscopy. It was found that, in the absence of rare earth additions, increases in zinc level had a negligible influence on the kinetics of restoration and the microstructure developed both during extrusion and throughout double hit testing. Adding rare earth elements to Mg-Zn alloys was found to retard restoration of the microstructure and maintain finer recrystallised grains. However, in the Mg-Zn-RE alloys, increasing the zinc concentration from 2.5 wt.% to 5 wt.% accelerated the restoration process, most likely due to a depletion of rare earth elements from solid solution and modification of the particles present in the matrix.

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