Nowadays, excitation sculpting is probably the most efficient way to achieve selectivity in an NMR experiment, since it associates very clean frequency selection with "user-friendliness".
The military-industry debate also involves the merits of a technical standard known as dynamic frequency selection, which is being used by advanced wireless Internet radios overseas to avoid interference.
Military officials are asking the American industry, and companies in other countries, to create and install even more sensitive versions of dynamic frequency selection -- something that the companies say may cause the technology to operate incorrectly.
Let FD denote frequency selection.
With careful frequency selection the formaldehyde signals were not observed.
In this paper, a new frequency selection method for efficient FRF-based model updating is proposed.
Sampling frequency selection is a key issue in direct digitalization of the radio frequency (RF) signals.
In those cases, the process of a single frequency selection is initiated.
Frequency selection depends on the material properties and structure in the biomass mixture.
If noncoherent sampling is chosen, the input frequency selection has fewer restrictions.
