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Peak tracking with a neural network for spectral recognition

Autor: H.J. Metting, P.M.J. Coenegracht, G.J. Snoeijer, D.A. Doornbos, E.M. van Loo

Publikováno v: Journal of Chromatography A, 631(1-2), 145-160. ELSEVIER SCIENCE BV

A peak tracking method based on a simulated feed-forward neural network with back-propagation is presented. The network uses the normalized UV spectra and peak areas measured in one chromatogram for peak recognition. It suffices to train the network

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4deba3f7a6fb5efe8ba430fa9faa6766
https://hdl.handle.net/11370/6c1ad587-de74-46b0-a66e-2462cf0e319d

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Neural networks in high-performance liquid chromatography optimization: Response surface modeling

Autor: P.M J Coenegracht, H.J Metting

Publikováno v: Journal of Chromatography, 728(1-2), 47-53. ELSEVIER SCIENCE BV

The usefulness of artificial neural networks for response surface modeling in HPLC optimization is compared with (non-)linear regression methods. The number of hidden nodes is optimized by a lateral inhibition method. Overfitting is controlled by cro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38ae6aae878ffcceb9efe4af45d9ed21
https://research.rug.nl/en/publications/ad37221e-193c-42bf-bb28-e82f4a732632

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Multivariate characterization of solvent strength and solvent selectivity in reversed-phase high-performance liquid chromatography

Autor: P.M.J. Coenegracht, H. DeVries, C.H.P. Bruins, H.J. Metting, Age K. Smilde, H. Benak, D.A. Doornbos

Publikováno v: Journal of Chromatography A, 550(1-2), 397-410. ELSEVIER SCIENCE BV
Journal of chromatography, 550(1-2), 397-410. Elsevier

Principal component analysis was used to determine the dimensionality and structure of three data sets consisting of the capacity factors of eleven to twenty different solutes measured in nine different mobile phase compositions consisting of water a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb9662b21e6165b0fd451622a42030aa
https://research.rug.nl/en/publications/baec1725-3d9e-43b0-bedc-acc16de62052

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COMPARISON OF OPTIMIZATION METHODS IN REVERSED-PHASE HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY USING MIXTURE DESIGNS AND MULTICRITERIA DECISION-MAKING

Autor: D.A. Doornbos, H.J. Metting, Age K. Smilde, P.M.J. Coenegracht

Publikováno v: Journal of chromatography. 485:195-217

The optimization of different mobile phase systems is compared using statistical mixture designs. Isoeluotropic and non-isoeluotropic ternary and quaternary mobile phase mixtures have been optimized with regard to selectivity and analysis time. For a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5b9907b7eb1c0ab603907b06cc40174
https://doi.org/10.1016/s0021-9673(01)89139-1

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Application of a mixture design technique to the simultaneous optimization of analysis time and resolution in reversed-phase ion-pair liquid chromatography using a minimal resolution plot

Autor: H.J. Metting, P.M.J. Coenegracht, P. J. M. Coenegracht-Lamers, Nguyen van Tuyen

Publikováno v: Journal of Chromatography A. 389:351-367

Based on a simple model, the influence of the experimental parameters on solvent strength and selectivity in reversed-phase ion-pair high-performance liquid chromatography is discussed. For optimization of the separation, a mixture design is proposed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7765424b91abc04f528d2ce7eeb78861
https://doi.org/10.1016/s0021-9673(01)94447-4

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A CHEMOMETRIC INVESTIGATION OF THE SELECTIVITY OF MULTISOLVENT MOBILE PHASE SYSTEMS IN RP-HPLC

Autor: H.J. Metting, P.M.J. Coenegracht, Age K. Smilde, P. J. M. Coenegracht-Lamers

Publikováno v: CHROMATOGRAPHIA, 27(3-4), 135-141. Springer Vieweg
Chromatographia, 27(3-4), 135-141

The selectivity of multisolvent mobile phase systems consisting of water, methanol, acetonitrile and tetrahydrofuran was studied when the solvent strength decreases at a constant ratio of the modifiers. From the retention measurements of six benzene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74ca22825624054ff304cedcfd43a855
https://pure.amc.nl/en/publications/a-chemometric-investigation-of-the-selectivity-of-multisolvent-mobile-phase-systems-in-rphplc(d8a6b26a-9ee3-4737-8ee5-2140fcd6db8c).html

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The automatic amperometric and potentiometric microtitration of pharmaceutically important sulfanilamide derivatives by diazotization with nitrite

Autor: P.M.J. Coenegracht, J.P. Franke, H.J. Metting

Publikováno v: Analytica chimica acta. 65(2)

The automatic amperometric and potentiometric microtitration of pharmaceutically important sulfanilamide derivatives by diazotization with nitrite is described. Optimal conditions for diazotization and amperometric indication are discussed. A new cat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8189365a9442d2faf492ef6ba218071
https://pubmed.ncbi.nlm.nih.gov/4725020

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