SpringerImages - Dependence of the number of 4D APSY-HNCOCA peaks of TM1290 calculated by GAPRO, P, on two operator-selected GAPRO parameters. (a) Impact of the intersection tolerance of subspaces in the indirect dimension, rmin. (b) Impact of the intersection tolerance of subspaces in the direct dimension, Δνmin. Blue areas represent correctly identified correlation peaks, red areas represent artifacts maintained in the final peak list, and the dotted line is a reference indicating the expected 110 peaks

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Fig 10

Dependence of the number of 4D APSY-HNCOCA peaks of TM1290 calculated by GAPRO, P, on two operator-selected GAPRO parameters. (a) Impact of the intersection tolerance of subspaces in the indirect dimension, r_min. (b) Impact of the intersection tolerance of subspaces in the direct dimension, Δν_min. Blue areas represent correctly identified correlation peaks, red areas represent artifacts maintained in the final peak list, and the dotted line is a reference indicating the expected 110 peaks

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For example, the values r_min ≥ 5.0 Hz and Δ ν_min ≥ 2.4 Hz yielded a complete peak list for the experiment of Figs. 3 and 4 (Fig. 10 ), which was recorded with a digital resolution of 4.7 Hz in the direct dimension, and digital resolutions between 5.6 and 15 Hz in the indirect dimensions, depending on the projection angles used for the individual 2D recordings. .

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