Results 261 to 270 of about 835,988 (340)

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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Effect of microwave treatment on structure of binders based on sodium carboxymethyl starch: FT-IR, FT-Raman and XRD investigations.

Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy, 2018
The paper deals with the influence of the microwave treatment on sodium carboxymethyl starch (CMS-Na) applied as a binder for moulding sands. The Fourier transformation infrared spectrometry (FT-IR), Raman spectroscopy (FT-Raman) and XRD analysis data of
K. Kaczmarska, B. Grabowska, T. Spychaj, Magdalena Zdanowicz, M. Sitarz, A. Bobrowski, S. Cukrowicz   +6 more
semanticscholar   +1 more source

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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Quantitative analysis of mannitol polymorphs. FT-Raman spectroscopy

Journal of Pharmaceutical and Biomedical Analysis, 2002
Mannitol is a polymorphic excipient which is usually used in pharmaceutical products as the beta form, although other polymorphs (alpha and delta) are common contaminants. Binary mixtures containing beta and delta mannitol were prepared to quantify the concentration of the beta form using FT-Raman spectroscopy.
Sarra N, Campbell Roberts, Adrian C, Williams, Ian M, Grimsey, Steven W, Booth   +3 more
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Biomolecular Investigations Using FT-Raman Spectroscopy

1997
This paper discusses the application of FT-Raman spectrometry for investigating different biologically important molecules such as amino acids and proteins in both the solid and native states. The utility of FT-Raman spectroscopy for examining structural changes in biomolecules, resulting from environmental changes such as pH, temperature and chemical ...
Prashant S. Bhandare, Robert Jakobsen, K. Krishnan   +2 more
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FTIR and FT Raman Spectra of B6O

Journal of Solid State Chemistry, 1997
Abstract The IR active phonon spectrum of B 6 O is typical for the α -rhombohedral boron structure group. The number of phonons corresponds exactly to that predicted by group theory. The phonon bands in the spectrum are weakly damped, indicating that the structure is largely undistorted.
H. Werheit, U. Kuhlmann
openaire   +1 more source