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Rapid solidification of undercooled peritectic Fe 81.68 Co 18.32 alloy was investigated using fluxing method. With the increase of initial melt undercooling (ΔT), different microstructures were observed. For low ΔT, a typical peritectic microstructure, if ΔT exceeded a critical value, 177K, metastable phase was observed in the as-solidified microstructure. On this basis, different...
The developing axon is believed to navigate towards its target tissue in response to a concentration gradient of neurotrophic factors, among other diffusible and surface-bound stimuli. However, the minimum concentration gradient required for guidance over the maximum distance is still unknown, largely because well-defined systems have not been utilized to address this question. In this study, a linear...
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