Infrared Spectra of Acyclic Imides. V. Infrared Spectra and Structure of Acyclic Imides in Solutions

Investigation of infrared spectra-structure correlation using

Two different artificial neural networks (ANNs) for infrared spectra analysis are presented: the self-organising Kohonen ANN for mapping of the infrared spectra into a 2-D plane and the counterpropagation ANN for determination of the structural features of organic compounds based on their infrared spectra. The preliminary learning in the Kohonen ANN with all spectra from the collection yields t...

Infrared Spectra of Tissues.

Near-Infrared Spectra of Ultraluminous Infrared Galaxies.

Near-infrared spectra with a resolution of lambda&solm0;Deltalambda approximately 1100 in the rest-wavelength range of 1.8-2.2 µm have been obtained for a complete sample of 33 ultraluminous infrared galaxies (ULIRGs). Of the 33 objects observed, two show evidence of a central active galactic nucleus (AGN) through either a broad Paschen-alpha line or emission in the 1.963 µm fine structure of [...

Molecular Structure Prediction Using Infrared Spectra

Chemists and other researchers often resort to spectroscopic methods, making use of matter-light interactions, to identify a sample’s molecular composition. A given molecule’s structure, including its arrangement of atoms in 3D space and interconnectivity, is manifested as a unique spectral pattern that serves the function of a molecular fingerprint. The integration of spectral clues to help na...

Taxonomic Value of Infrared Spectra.

Efforts to demonstrate species or generic relationships among bacteria throu-h the use of infrared (IR) spectra of whole cells (Norris, J. Hyg. 57:326, 1959) have been increasing despite frequent cautions (Kenner et al., J. B3acteriol. 75:16, 1958) that such procedures are fraught with experimental pitfalls. AIany of the reports concerning bacterial identification by this technique are favorabl...