نتایج جستجو برای: neodymium

تعداد نتایج: 2122  

Journal: :Journal of Cleaner Production 2021

Abstract Electric vehicles are sometimes marketed unambiguously as low-carbon technologies; however, they often contain less ‘clean’ ingredients, such rare earth permanent magnets. In fact, high-performance magnets in electric use neodymium. Alternatively, more costly samarium-cobalt can be used. this paper, life cycle assessment is used to compare the primary production routes of both neodymiu...

Journal: :Gut 1981
P Rutgeerts G Vantrappen K Geboes L Broeckaert

Acute and chronic experiments were carried out in 26 beagle dogs to study the safety and efficacy of Neodymium-Yag laser photocoagulation in the treatment of bleeding gastric lesions. Continuous high power (50-60 W) Neodymium-Yag laser photocoagulation applied to the exposed stomach of the dog produced evaporation lesions that reached the muscle layer after six to 10 seconds and caused free per...

2015
T. YAZAKI M. YONATHAN H. HABAKI R. EGASHIRA

The solvent extraction of neodymium, a rare earth metal, was studied with a continuous stirred vessel. One of the widely used extractants, 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (PC-88A), diluted with kerosene was selected as an extracting organic solvent. First, the extraction equilibrium of neodymium between aqueous and organic phases was measured in a batch-wise experimental ru...

2013
H. Oppermann M. Zhang C. Hennig

Z. Naturforsch. 53 b, 1343-1351 (1998); eingegangen am 21. Juli 1998 Aluminium Neodymium Chloride, Decomposition, Thermochemical Data, Enthalpy, Entropy The thermodynamical data of solid and gaseous aluminium neodymium chloride have been obtained by determination of the decomposition equilibria (of solid) from total pressure mea­ surements and chemical transport reactions (gaseous). The melting...

Journal: :Science 1981
A R Basu S L Ray A K Saha S N Sarkar

Samarium-neodymium data for nine granitic and tonalite gneisses occurring as remnants within the Singhbhum granite batholith in eastern India define an isochron of age 3775 +/- 89 x 10(6) years with an initial (143)Nd/(144)Nd ratio of 0.50798 +/- 0.00007. This age contrasts with the rubidium-strontium age of 3200 x 10(6) years for the same suite of rocks. On the basis of the new samarium-neodyn...

Journal: :Acta crystallographica Section B, Structural science, crystal engineering and materials 2015
Isabel de Francisco Jose Antonio Bea Angel Vegas Juan Bautista Carda German Francisco de la Fuente

Neodymium aluminate coatings have been prepared in-situ by the laser zone melting (LZM) method, using a CO2 SLAB-type laser emitting at 10.6 µm. Polycrystalline Al2O3 commercial plates have been used as substrates, and coatings were prepared from the corresponding mixtures of powdered neodymium and aluminium oxides as starting materials. Microstructure, studied by SEM and phase composition, stu...

2017
Tzu Hsuan Chiang Tso-Ming Chen

The study investigated photocatalytic water splitting for O₂ production under visible light irradiation using neodymium vanadium oxide (NdVO₄) and vanadium oxide (V₂O₅) hybrid powders. The results in a sacrificial agent of 0.01 M AgNO₃ solution were obtained, and the highest photocatalytic O₂ evolution was 2.63 μmol/h, when the hybrid powders were prepared by mixing Nd and V at a volume ratio o...

2013
H. H. Yu J. Y. Wang

Based on the invention and widely application of the Czochralski pulling method, vanadate crystals have been grown and commercialized in recent decades. In this paper, the growth and characterization of a series of neodymium doped vanadate crystals have been reviewed, including Nd:YVO4, Nd:GdVO4, and Nd:LuVO4. The excellent thermal-mechanical and laser property make them to be used in many resp...

Journal: :Radiation protection dosimetry 2005
D P Barry M J Trbovich Y Danon R C Block R E Slovacek G Leinweber J A Burke N J Drindak

Neutron capture and transmission measurements were performed by the time-of-flight technique at the Rensselaer Polytechnic Institute LINAC using metallic neodymium samples. The capture measurements were made at the 25-m-long flight station with a 16-segment NaI(Tl) multiplicity detector, and the transmission measurements were performed at 15 and 25 m flight stations with a 6Li glass scintillati...

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