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From: Burkhard S. <b_...@us...> - 2004-12-17 16:15:40
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Hi Maren and Mark, I think Maren put this very well. A few comments: > > (1) Is LCMS its own technique or does it reuse LC and MS? (do hybrid > > techniques need their own individual definitions?) Let's assume LCMS > reuses > > LC and MS. > As far as I remember, we decided that we build hyphenated techniques out of > base techniques, so your assumption is correct. Yes. > > If ExperimentStep is the application of a technique, then LC and MS Pages > go > > in differnt ExperimentSteps while UV214, UV254, ELS, NCLD all go in the > same > > ExperimentStep. > This is the difficult point about chromatography: the multitude of > different detectors. I think the cleanest approach would be to make each > detector a different technique (or maybe technique extensions). This would > require to put the UV, ELSm NCLD data into different ExperimentSteps. I agree, using different techniques for each detector and putting the data into different ExperimentSteps would be the cleanest way. > > If multi-detector data goes in multiple ExperimentSteps, then how do we > hold > > multiple instances of that hybrid analysis in one file? > Each detector-specific ExperimentStep would have a Reference element > pointing up the tree to the mother element, and would possibly sit in a > subordinate ExperimentStepSet of the mother page. Correct. So each MS spectrum would have a Reference pointing up to the time vector of the LC chromatogram page. Have a good weekend! Best wishes, Burkhard |