Interleave scan

If the time consumption is acceptable and the image drift is negligible, a scan line can be scanned twice to separate topography and electrical properties. In this case, a first scan in contact or better in a dynamic mode without an electrical excitation is performed. The tip is lifted and for the following second scan the z-piezo is controlled in a way that the tip follows the same topography as for the first scan (constant tip-sample distance or interleave scan). During this second line scan, one of the above-mentioned measurements of electrical properties can be performed [396]. 

Indentation 112, 122 Injection moulding 124 Interface 128, 130 Interleave scan 173 Interphase 129, 137... 

Figure 27 Edited broadband HMBC spectrum of cyclosporine using the pulse sequences shown in Figure 26 in an interleaved manner. The two subspectra, CH + CH3 (left) and C + CH2 (right), exemplify the editing properties. The spectrum in the bottom displays the two subspectra, CH + CH3 (black) and C + CH2 (grey) in the same frame. The number of scans was 32 for each of the 128fi increments, the relaxation delay was 1 s, and the range for the third-order low-pass. /-filter was 115 Hz < Vch < 165 Hz. The spectra were processed to maintain the absorptive profiles in F, while a magnitude mode was done in F2.

Fig. 5 Effect of varying relaxation delays between on- and off-resonance experiments in STD NMR experiments, a Experimental setnp for interleaved measnrements in STD NMR spectroscopy, n represents the nnmber of scans. The inter-scan delay Adi is varied while keeping on- and off-resonance freqnencies constant at -4 and -t300 ppm, respectively, b The resulting STD effects for the 0-methyl group of a-L-Fuc-O-methyl in the presence of RHDV VLPs. The equation that was used for non-linear least squares data fitting is based on the saturation recovery experiment [98], With Ti(iig) = 0.91 s as measured independently (unpublished results) and a Monte Carlo error estimation yields Ti(virus) = 10.06 0.41 s. This value does not directly correspond to a Tl relaxation time of the virus protons, because other factors also influence the observed relaxation [99]. According to these findings a relaxation delay Adi = 25 s was employed in all STD experiments. This results in a recovery of 92% of the virus resonance, and thereby reduces errors in epitope mapping that are introduced otherwise by non-homogeneous recovery of the binding site.

Interleave on- and off-resonance irradiation, using a block size of four to eight scans. 

In order to minimize the overall time of a 2D experiment, one wishes to keep the number of scans per increment (ns//) at a value that is sufficient to observe the spectrum of that particular increment. For heteronucleus detection, this number usually is large, but for protons, adequate detection can often be accomplished in 1 to 4 scans. The minimum ns//, however, is determined by the phase cycle (Section 5-8) of the pulse sequence used and may be anywhere from 4 to 64 scans. As a general rule, 8 scans// is a minimum value for H-detected experiments. Longer experiments that require a large ns//, such as the study of dilute solutions (proton detection) or heteronucleus detection, can make good use of interleaved acquisition with a suitable block size (as described in the discussion of the DEPT experiment in Section 7-2b). 

Hum bars Horizontal black and white bars that extend over the entire TV picture and usually drift slowly through it. Hum bars are caused by an interfering power line frequency or one of its harmonics. Interlaced A shortened version of interlaced scanning (also called line interlace). Interlaced scanning is a system of video scanning whereby the odd- and even numbered lines of a picture are transmitted consecutively as two separate interleaved fields. 

Note how the possible paths from the [fork] gateway to the [merge] gateway cover all possible allowed interleavings of assessing and then scanning a patient, and examining the patient s medical... 

With a suitable instrument, the above three acquisition experiments (precursor ion scan, neutral loss scan, and MRM) can be cycled as having during all the experiment time (usually between 2 and 3 min) the interleave of each of them. 

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