منابع مشابه
Modern Alchemy
developmental process. Surveying the mathematical analysis of Woodger and the contribution of experimental embryology to formation (Gestaltung), to segregation, to differentiation, to growth, to polarity and symmetry, and finally to regeneration, we are led through a consideration of the historical character of the organism to the system theory. We read, "We must view the germ as a whole, as a ...
متن کاملCatalysis by Supported Gold Nanoclusters
The physical and chemical properties of supported Au clusters are markedly sensitive to cluster size and morphology. To investigate the origin of the unique properties of nanosized Au clusters, model catalysts consisting of Au clusters of varying sizes have been prepared on single crystal TiO2(110) and ultrathin films of single crystalline TiO2, SiO2, and Al2O3. The morphology, electronic struc...
متن کاملThe Spirit of Alchemy in Modern Industry.
MSS. intended for publication and books, etc.intended for review should be se:nt to the Editor of &IecE; Garrison-.. ludsoia, N. Y~ THE SPIRIT OF ALCHEMY IN MODERN INDUSTRY NEVER in the history of the world has there been such a time of intense human activity as the present: never a time of such gigantic undertakings, such marvelous achievements. Notwithstanding, the curve of progress is still ...
متن کاملThe promotional effect of gold in catalysis by palladium-gold.
Acetoxylation of ethylene to vinyl acetate (VA) was used to investigate the mechanism of the promotional effect of gold (Au) in a palladium (Pd)-Au alloy catalyst. The enhanced rates of VA formation for low Pd coverages relative to high Pd coverages on Au single-crystal surfaces demonstrate that the critical reaction site for VA synthesis consists of two noncontiguous, suitably spaced, Pd monom...
متن کاملOxidation catalysis by supported gold nano-clusters
The historical notion regarding the inability of gold to catalyze reactions has been discarded in view of recent studies, which have clearly demonstrated the high catalytic efficiency of supported nano-gold catalysts. Although nano-Au catalysts are known to catalyze a variety of reactions, the major focus has been on CO oxidation catalysis. In this work we focus on the important aspects related...
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ژورنال
عنوان ژورنال: Journal of the Vacuum Society of Japan
سال: 2008
ISSN: 1882-2398,1882-4749
DOI: 10.3131/jvsj2.51.721