Infrared Spectrum and Normal Vibrations ofN,N-Dimethylthioacetamide

Normal vibrations of polyglycine II.

Normal vibrations of crystalline polyglycine I.

A valence force field has been refined for crystalline polyglycine I using its known antiparallel chain pleated-sheet structure and without replacing the CH, group by a point mass. Polyglycine I and four of its isotopic derivatives were used in the refinement. The calculated frequencies are in good agreement with the observed, except for the amide I modes. It is shown that this is a consequence...

Infrared Cavity Ringdown Spectroscopy of the Water Cluster Bending Vibrations

We report the first measurement of water monomer bending vibrations in gaseous (H2O)n clusters. Infrared cavity ringdown spectroscopy reveals discrete and sequentially blue-shifted bands near 6 μm for n ) 2-4 and unresolved broad features for n > 4, supporting both theoretical predictions and solid-state spectroscopy results. These measurements provide a measure of the monomer distortion that a...

Fourier-Transform Infrared Spectroscopic Comparison of Normal and Malignant Cervical Tissue Cervical Tissue.

Based on the accumulated data, FTIR spectroscopy seems to be a highly sensitive tool in cervical cancer diagnosis. We, therefore, employed this technique in a screening type of research here in Tehran. The purpose of this study was to look for the spectral pattern differences between normal and malignant cervix samples in Iranian women. Through formal and informal announcements, all gynecology ...

Fourier-Transform Infrared Spectroscopic Comparison of Normal and Malignant Cervical Tissue Cervical Tissue.

Based on the accumulated data, FTIR spectroscopy seems to be a highly sensitive tool in cervical cancer diagnosis. We, therefore, employed this technique in a screening type of research here in Tehran. The purpose of this study was to look for the spectral pattern differences between normal and malignant cervix samples in Iranian women. Through formal and informal announcements, all gynecology ...