Results 251 to 260 of about 17,706 (286)

FT Raman spectroscopic studies of wool

Journal of the Society of Dyers and Colourists, 1994
FT Raman spectroscopy has been used to investigate the structure of scoured wool cloth and fibres subjected to hydrogen peroxide bleaching. The advantages of FT Raman spectroscopy over conventional laser Raman and IR spectroscopic techniques are discussed.
L J Hogg, H G M Edwards, D W Farwell, A T Peters   +3 more
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New directions in FT-Raman spectroscopy

SPIE Proceedings, 1994
Although FT-Raman spectroscopy has proven to be applicable to a wide variety of applications, there remains a small number of samples which are not easily analyzed with the technique. Several sampling accessories which have been developed to further expand the applications of FT-Raman spectroscopy are demonstrated.
Janice L. Hellman, Nancy T. Kawai, Carolin Lehner, Paul H. Turner   +3 more
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FT-Raman Investigations of Forest Products

Applied Spectroscopy, 1990
FT-Raman spectroscopy has been used to analyze several forest product materials. Spectra of balsa, oak, pine, and redwood have been obtained. These data can be used to differentiate between hard and soft woods by examination of the ratio of the intensities of those bands attributable to cellulose and lignin as well as by the presence (or absence) of a
R. C. Kenton, R. L. Rubinovitz
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FT-Raman spectroscopy of titania hydrolysates

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 1997
Abstract FT-Raman spectroscopy has been used to study the peptisation of titania hydrolysates produced from tetraisopropyltitanate (TPT), chemically modified by reaction with a number of carboxylic acids. During peptisation with nitric acid at 333 K, a colloidal sol of well crystallised anatase was formed. Similar sols were formed by heating at 333 K
Venz, P A, Frost, R L, Bartlett, J R, Woolfrey, J L   +3 more
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Palaeodental studies using FT‐Raman spectroscopy

Biospectroscopy, 1995
AbstractThe FT‐Raman vibrational spectrum of a child's deciduous exfoliated tooth has been analysed and the spectral features assigned to hydroxyapatite and protein. Comparisons made with older teeth from a Romano‐British burial site (∼ 2k years) and fossilised animal teeth (∼ 1 M‐70 M years) indicate that the organic protein component has disappeared ...
H. G. M. Edwards, A. C. Williams, D. W. Farwell   +2 more
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FT-Raman spectroscopy of biological molecules

Mikrochimica Acta, 1988
Raman spectroscopy of biological molecules is often very difficult if not impossible due to a large fluorescence background from absorbing species, either from the molecule itself or an impurity. Photobleaching is occasionally successful in photochemically removing fluorescent impurities, but the majority of samples are not responsive to such treatment.
Vickie M. Hallmark, Carl G. Zimba, Jerome D. Swalen, John F. Rabolt   +3 more
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FT-IR and FT-RAMAN investigations of nicotinaldehyde

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2006
The Fourier transform Raman and infrared spectra of nicotinaldehyde were recorded and the observed frequencies were assigned to various modes of vibration in terms of fundamentals by assuming Cs point group symmetry. A normal coordinate analysis was also carried out using a simple valence force field.
Sujin P, Jose, S, Mohan
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FT-Raman spectral analysis of human urinary stones

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2012
FT-Raman spectroscopy is the most useful tool for the purpose of bio-medical diagnostics. In the present study, FT-Raman spectral method is used to investigate the chemical composition of urinary calculi. Urinary calculi multi-components such as calcium oxalate, hydroxyl apatite, struvite and uric acid are studied.
R, Selvaraju, A, Raja, G, Thiruppathi
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FT Raman microscopy of untreated natural plant fibres

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 1997
The application of FT-Raman microscopy to the non-destructive analysis of natural plant fibres is demonstrated with samples of flax, jute, ramie, cotton, kapok, sisal and coconut fibre. Vibrational assignments are proposed and characteristic features of each material are presented.
H G, Edwards, D W, Farwell, D, Webster
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Artifacts In FT-Raman Spectroscopy

SPIE Proceedings, 1989
The rapid improvements in detector technology, interferometer optimization and filter technology have brought the sensitivity in FT-Raman spectroscopy to a point where spectra can be recorded quite readily from most samples. The limitation is no longer due to detector noise.
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