منابع مشابه
Rhombohedrally distorted γ-Au(5-x)Zn(8+y) phases in the Au-Zn system.
The region of the Au-Zn phase diagram encompassing γ-brass-type phases has been studied experimentally from 45 to 85 atom % Zn. The γ phases were obtained directly from the pure elements by heating to 680 °C in evacuated silica tubes, followed by annealing at 300 °C. Powder X-ray and single-crystal diffraction studies show that γ-"Au(5)Zn(8)" phases adopt a rhombohedrally distorted Cr(5)Al(8) s...
متن کاملStability of gold nanowires at large Au - Au separations
The unusual structural stability of gold nanowires at large separations of gold atoms is explained from first-principles quantum mechanical calculations. We show that undetected light atoms, in particular hydrogen, stabilize the experimentally observed structures, which would be unstable in pure gold wires. The enhanced cohesion is due to the partial charge transfer from gold to the light atoms...
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Au2H 2 was recognized and confirmed as a minor contamination to typical photoelectron spectra of Au2 2 , produced by laser vaporization of a pure Au target using an ultrahigh purity helium carrier gas. The hydrogen source was shown to be from trace H impurities present in the bulk gold target. Carefully designed experiments using H2and D2-seeded helium carrier gas were used to study the electro...
متن کاملOrganocatalytic photoreduction of Zn(II) to zinc metal.
The photoreduction of Zn(II) to Zn metal catalyzed by 8-hydroxyquinoline derivatives is reported. Structure-activity relationships, ideal reaction conditions, and the reaction kinetics are described and a mechanism involving an in situ formed quinolate complex is portrayed.
متن کاملGrowth and zinc homeostasis in the severely Zn-deficient rat.
Male weanling rats were fed on diets either adequate (55 mg/kg), or severely deficient (0.4 mg/kg) in zinc, either ad lib. or in restricted amounts in four experiments. Measurements were made of growth rates and Zn contents of muscle and several individual tissues. Zn-deficient rats exhibited the expected symptoms of deficiency including growth retardation, cyclic changes in food intake and bod...
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ژورنال
عنوان ژورنال: Journal of Phase Equilibria and Diffusion
سال: 2006
ISSN: 1547-7037,1863-7345
DOI: 10.1007/s11669-006-0027-x