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The improvement is due to porosity reduction, improved fibre alignment and forced intimate contact of clean CF surfaces with the matrix.
In general such matrix effects are directly related to an insufficient sample clean-up of the biofluids.
Open accessJournal ArticleDOI
Simion Breaz, George Ciprian Modoi 
9 Citations
In particular, it would be nice to characterize nil-clean elements in matrix rings over division rings.
This paper shows how the matrix converter disadvantages-the lack of bidirectional power devices, the lower voltage transfer ratio, and the overvoltages caused by the input filter during power-up-that have delayed the industrial implementation have been overcome.

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