نتایج جستجو برای: yttrium

تعداد نتایج: 4786  

Journal: :Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2014
A Lopez N Noiret E Garin N Lepareur

Yttrium-90 is a radioelement which has found wide use in targeted radionuclide therapy because of its attractive physical and chemical properties. Radioembolisation of hepatocellular carcinoma with radiolabelled Lipiodol is a method of choice. We have synthesised a series of alkyldithiocarbamate yttrium complexes, easily extracted into Lipiodol due to their high lipophilicity. Among the prepare...

2014
Rebeca Mellado-Vázquez Margarita García-Hernández Arturo López-Marure Perla Yolanda López-Camacho Ángel de Jesús Morales-Ramírez Hiram Isaac Beltrán-Conde

Yttrium oxide (Y₂O₃) nanocrystallites were synthesized by mean of a sol-gel method using two different precursors. Raw materials used were yttrium nitrate and yttrium chloride, in methanol. In order to promote oxygen vacancies, P-123 poloxamer was incorporated. Synthesized systems were heat-treated at temperatures from 700 °C to 900 °C. Systems at 900 °C were prepared in the presence and absenc...

Journal: :Journal of vacuum science and technology 2021

Yttrium, titanium, and yttrium-titanium getter thin films were elaborated on silicon by coevaporation in ultrahigh vacuum. Y-Ti exhibit nanometric crystallites size (18–35 nm) leading to a very high grain boundary density, which is favorable microstructure for activation at low temperature. The yttrium content alloys influences size, resistance against room temperature oxidation, gettering perf...

Journal: :Neurosurgery 2016
Roberto Diaz Michael E Ivan Simon Hanft Steve Vanni Glen Manzano Jonathan Jagid Ricardo J Komotar

ABBREVIATIONS LITT, laser interstitial therapyNd:YAG, neodymium-doped yttrium aluminum.

2017
C Santos

Designing nanostructured materials with high dosimetric efficiency is a great challenge in radiation dosimetry research. From rare-earth series, yttrium oxide is considered as excellent host matrix for rare-earth ions, leading to formation of advanced functional materials with optical, mechanical, chemical, and thermal properties notably improved. Nevertheless, there is a lack of information wh...

2012
R. Kolesov K. Xia R. Reuter R. Stöhr A. Zappe J. Meijer P.R. Hemmer J. Wrachtrup

Rare-earth-doped laser materials show strong prospects for quantum information storage and processing, as well as for biological imaging, due to their high-Q 4f↔4f optical transitions. However, the inability to optically detect single rare-earth dopants has prevented these materials from reaching their full potential. Here we detect a single photostable Pr(3+) ion in yttrium aluminium garnet na...

2010
L. Fernandez-Garcia M. Suarez J. L. Menendez

Yttrium iron garnet powders have been synthesized by chemical coprecipitation using two different precursors, nitrates and chlorides, and by an oxides mixture route. It is shown that depending on the precursors and synthesis conditions used pure yttrium iron garnet powders can be obtained with a mono or multidomain magnetic behaviour. The yttrium iron garnet crystalline structure, as studied by...

2006
Abderramane Amgoune Christophe M. Thomas Simona Ilinca Thierry Roisnel Jean-François Carpentier

1999
Joseph M. Pyle Frank S. Spear

The concentration of yttrium in pelitic garnets as a function of metamorphic grade has been examined in relation to the distribution of xenotime (YPO4) in samples from New England and British Columbia. Samples with xenotime present only as inclusions in garnet generally possess high-Y cores and concentrations that drop off discontinuously along zoning shoulders of variable width to low-Y outboa...

Journal: :Industrial health 2006
Mitsutoshi Takaya Yasushi Shinohara Fumio Serita Mariko Ono-Ogasawara Noriko Otaki Tadao Toya Ayako Takata Katsumi Yoshida Norihiko Kohyama

The dissolution rates of rare earth oxides and two types of rare earth containing functional materials into water, saline solution, and Gamble's fluid were measured in order to evaluate the biological effects of rare earth-containing functional materials. The tested materials were yttrium, lanthanum, cerium and neodymium oxides, and neodymium-boron-iron magnet alloy (NdBFe) and lanthanum-mish-m...

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