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Microcellular aluminium can be produced by a process known as replication; this involves the infiltration of a packed bed of NaCl particles which are subsequently leached after metal solidification. The resulting material features a uniform distribution of equisized pores, the shape and volume fraction of which can be tailored, as can the composition and microstructure of the metal making the resulting...
We report a tricky case of a 63-year-old man with previous coronary artery bypass graft surgery in whom transoesophageal echocardiography revealed a voluminous echolucent cavity simulating aortic ectasia but that proved to be of nephrogenic origin.
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