Results 261 to 270 of about 223,281 (310)

FT-IR spectroscopy: a powerful tool in pharmacology

Journal of Pharmaceutical and Biomedical Analysis, 2002
In the present work we report a Fourier Transform Infrared (FT-IR) analysis performed on rat encephalon samples in the CH-OH vibrational stretching region (2400-3800) cm(-1), in order to reveal the presence of a very diffuse commercial benzodiazepine: VALIUM.
CRUPI, Vincenza, MAJOLINO, Domenico, MONDELLO MR, MIGLIARDO, Placido, VENUTI, Valentina   +4 more
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Protein Analysis by FT-IR/ATR Spectroscopy

Fourier transform infrared spectroscopy (FT-IR) is a powerful tool for the study of inorganic and organic materials. In the past years, many efforts have been put forward for the use of FT-IR in living cells and tissues, and as a diagnostic tool to study pathology in vivo, ex vivo, and in vitro, due to its peculiar advantages, which include high ...
Graziani, Gabriela, D'Atri, Giovanni, Gabusi, Elena, Lisignoli, Gina   +3 more
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FT-IR spectroscopy of solid surfaces

Journal of Molecular Structure, 1984
Abstract Since Fourier transform infrared (FT-IR) spectrometers offer very high sensitivity, special application methods for solids can be used in the infrared region in which weak radiation power reaches the detector. In this paper measurements of solid surfaces by photoacoustic, diffuse reflectance and emission FT-IR spectroscopy will be presented ...
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ADC Errors In Quantitative FT-IR Spectroscopy

SPIE Proceedings, 1985
Analog-to-digital converters (ADCs) are an indispensible component in the electronic processing chain of modern computer-ized instruments, such as Fourier transform infrared (FT-IR) spectrophotometers. In an FT-IR spectrometer, the interferogram of a broadband source covers a wide dynamic range, on the order of 106:1.
Aslan Baghdadi, Warren K. Gladden
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Surface Spectroscopy Using FT-IR

2017
FT-IR is quite suitable for studying thin films (or molecular adsorbates) on a solid or liquid surface because of the high sensitivity and quantitatively great reproducibility, which perfectly matches the theoretical prediction based on electrodynamics.
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Some Applications Of FT-IR Photoacoustic Spectroscopy

SPIE Proceedings, 1985
The sensitivity and speed of FT-IR make it possible to obtain the photoacoustic spectra of a variety of samples with little or no sample preparation (1,2). A typical photoacoustic (PA) detector consists of an acoustically sealed cell of small volume in which the sample under study is kept surrounded by an inert gas.
K. Krishnan, L. Gelfand, S. L. Hill
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Computers And Computing In FT-IR Spectroscopy

SPIE Proceedings, 1989
The state-of-the-art in inexpensive computing for FT-IR spectroscopy is examined. Problems concerning instrument communications, data transportability, networking using personal computers are explored. The use of personal computers in advanced chemometric applications is examined including applications of discriminant analysis for the classification of
Don Kuehl, James Duckworth
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FT-IR Spectroscopy in an Industrial Laboratory

Applied Spectroscopy, 1984
FT-IR spectroscopy is used widely in many industrial laboratories. In combination with techniques such as gas chromatography, diffuse reflectance, and photoacoustic spectroscopy, it provides a means of tackling certain problems which would be impossible or at least very difficult and time-consuming with the use of dispersive Infrared instrumentation ...
J. M. Chalmers, M. W. Mackenzie, H. A. Willis   +2 more
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Optical Contact in ATR/FT-IR Spectroscopy

Applied Spectroscopy, 2001
Optical contact between an internal reflection element (IRE) and a sample is crucial for obtaining a good spectrum in an attenuated total reflection (ATR) experiment. When an air gap is present between the IRE and the sample, the spectrum severely deteriorates.
Sanong Ekgasit, Adchara Padermshoke
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FT-IR Emission Spectroscopy and its Applications

Applied Spectroscopy, 1993
The practical aspects of infrared emission spectroscopy are reviewed briefly, with emphasis on recent developments and on special problems encountered in measurements of adsorbed species on opaque substrates. A few examples are given for cases when the species of interest give rise to inverted emission bands on the background of substrate emission ...
János Mink, Gábor Keresztury
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