منابع مشابه
A thermodynamic study of the cadmium–neodymium system
ABSTRACT Cd vapor pressures were determined over Cd-Nd samples by an isopiestic method. The measurements were carried out in the temperature range from about 690 to 1200 K and over a composition range between 48 and 92 at % Cd. From the vapor pressures, thermodynamic activities of Cd were derived for all samples at their respective sample temperatures, and partial molar enthalpies of Cd were ob...
متن کاملThe neodymium neologism.
In 1838, Swedish chemist Carl Mosander isolated lanthanum, a new metal that had been hiding in Berzelius’ cerium since 18031. Two years later, he found yet another metal in cerium — this third component was responsible for a purplish hue in his samples2. He named this metal didymium, from a Greek word meaning twin. Didymium shared many chemical properties with lanthanum and thus appeared to be ...
متن کاملReport to the NDSC Steering Committee Ny - Ålesund , August 1997
The following NDSC stations have been included as ozonesonde stations so far and are supposed to deliver sonde data to the NDSC data base: Ny-Ålesund, Thule, Eureka, Observatoire de Haute Provence, Mauna Loa, Lauder, Dumont d’Urville, McMurdo, South Pole. One should consider whether more stations should be included as there are more NDSC stations with ozonesonde facilities either at the site or...
متن کاملTrisodium scandium bis(orthoborate)
Single crystals of tris-odium scandium bis-(orthoborate), Na(3)Sc(BO(3))(2), have been obtained by spontaneous crystallization from an Na(2)O-Sc(2)O(3)-B(2)O(3) melt. The crystal structure features a three-dimensional framework composed of planar [BO(3)](3-) groups and distorted ScO(6) octa-hedra with Na atoms in the cavities. The Sc atom occupies a special position (Wyckoff position 2b, site s...
متن کاملGadolinium scandium germanide, Gd2Sc3Ge4
Gd(2)Sc(3)Ge(4) adopts the ortho-rhom-bic Pu(5)Rh(4)-type structure. The crystal structure contains six sites in the asymmetric unit: two sites are statistically occupied by rare-earth atoms with Gd:Sc ratios of 0.967 (4):0.033 (4) and 0.031 (3):0.969 (3), one site (.m. symmetry) is occupied by Sc atoms, and three distinct sites (two of which with .m. symmetry) are occupied by Ge atoms. The rar...
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ژورنال
عنوان ژورنال: Bulletin of Alloy Phase Diagrams
سال: 1983
ISSN: 0197-0216
DOI: 10.1007/bf02884854