Results 261 to 270 of about 355,041 (315)
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Journal of High Resolution Chromatography, 1991
AbstractThe results described in this paper demonstrate that Identifiable FTIR spectra of components separated by gas, supercritical fluid, and liquid chromatography can be measured in real time using a common approach. The sensitivity of each Interface is comparable with that obtained by interfacing the corresponding technique with a bench‐top mass ...
Kelly L. Norton +2 more
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AbstractThe results described in this paper demonstrate that Identifiable FTIR spectra of components separated by gas, supercritical fluid, and liquid chromatography can be measured in real time using a common approach. The sensitivity of each Interface is comparable with that obtained by interfacing the corresponding technique with a bench‐top mass ...
Kelly L. Norton +2 more
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FTIR Spectroscopy of Metalloproteins
2014Absorption of infrared radiation by proteins gives important information about their structure and function. The most intense infrared bands correspond to the overlap of all the peptide bond absorption. Additionally, in many metalloproteins their prosthetic groups have intrinsic ligands or bind substrates/inhibitors that absorb intensively in the ...
Oscar, Gutiérrez-Sanz +2 more
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Polyethylene characterization by FTIR
Polymer Testing, 2002 Important experimental parameters for FTIR spectra acquisition were studied: apodization, beam aperture, number of scans and spectral resolution, using polyethylene samples. The optimum conditions for the analyses were established and permitted unequivocally to identify the three most important commercially available grades: low density, high density ...
J V Gulmine, H M Heise, Leni Akcelrud
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FTIR and Raman Spectroscopy of Rhodopsins
2022Vibrational spectroscopy such as FTIR and Raman spectroscopy is a powerful, sensitive, and informative method for studying protein structural changes in rhodopsins during their functions. The usefulness has been historically proven for the study of bacteriorhodopsin and bovine rhodopsin before their structural determination of rhodopsins.
Hideki, Kandori, Yasuhisa, Mizutani
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Investigation of folding in protamine by FTIR
Talanta, 1992The secondary structure of purified protamine, a non-specific DNA binding protein, was studied in solution at pH 4, 7 and 8 by FTIR. This permitted analysis of the folded form of the protein (acidic pH) as well as the folded conformers (neutral and basic pH).
J J, Pesek, F R, Shabary
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FTIR Spectral Components of Schwertmannite
Environmental Science & Technology, 2010Fourier transform infrared (FTIR) spectral components of three dominant groups of sulfate species in synthetic schwertmannite (Fe(8)O(8)(OH)(6-x)(SO(4))(x)*nH(2)O) are presented. These components were extracted by multivariate curve resolution analysis of spectra obtained from N(2)(g)-dry samples initially reacted in aqueous solutions (pH 3-9) at room ...
Jean-François, Boily +4 more
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Quantitative analysis of copolymers by FTIR
European Polymer Journal, 1993Quantitative analysis of copolymers is described in detail for a series of copolymers of 2-[(phenylamino)carbonyl]oxyethyl methacrylate and 1-methyl-2-phenoxyethyl methacrylate. Particular emphasis is placed on aspects optimising the accuracy of the technique.
MAO, RS, HUGLIN, MB, DAVIS, TP
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Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces, 2009
The increased attention which multitouch interfaces have received in recent years is partly due to the availability of cheap sensing hardware such as FTIR-based screens. However, this method has so far required a bulky projector-camera setup behind the screen. In this paper, we present a new approach to FTIR sensing by "inverting" the setup and placing
Florian Echtler +3 more
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The increased attention which multitouch interfaces have received in recent years is partly due to the availability of cheap sensing hardware such as FTIR-based screens. However, this method has so far required a bulky projector-camera setup behind the screen. In this paper, we present a new approach to FTIR sensing by "inverting" the setup and placing
Florian Echtler +3 more
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Forensic Science International, 2015
In this article, five hundred and thirteen cocaine seizures of the State of Rio Grande do Sul (Brazil) were analyzed by Fourier transform infrared spectroscopy (FT-IR) in the fingerprint region (1800-650 cm(-1)) to profiling and evaluate the pharmaceutical products used as adulterants.
M C A, Marcelo +3 more
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In this article, five hundred and thirteen cocaine seizures of the State of Rio Grande do Sul (Brazil) were analyzed by Fourier transform infrared spectroscopy (FT-IR) in the fingerprint region (1800-650 cm(-1)) to profiling and evaluate the pharmaceutical products used as adulterants.
M C A, Marcelo +3 more
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FTIR spectroscopy and FTIR microscopy of vacuum-evaporated polyimide thin films
Vibrational Spectroscopy, 1999Abstract Polyimide (PI) thin films can be formed by vapor co-deposition of the precursor molecules pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA) if the resulting polyamic acid film is heated above 150°C. The effects of dose stoichiometry and curing temperature on the imidization rate and crystallization of PI films were investigated ...
I Karamancheva +5 more
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