Results 211 to 220 of about 173,479 (247)
Some of the next articles are maybe not open access.
Journal of Chemical Education, 1987
Representative examples of the spectra and the analyses for a linear molecule (HCl), a symmetric top molecule (NH3), and an assymetric top (H2O).
Ron Woods, Giles Henderson
openaire +1 more source
Representative examples of the spectra and the analyses for a linear molecule (HCl), a symmetric top molecule (NH3), and an assymetric top (H2O).
Ron Woods, Giles Henderson
openaire +1 more source
Zeitaufgelöste FTIR‐Differenzspektroskopie
Nachrichten aus Chemie, Technik und Laboratorium, 1993AbstractMit der Fourier‐Transform‐Infrarot (FTIR)‐Differenzspektroskopie lassen sich nicht nur Chromophorreaktionen von Proteinen, sondern darüber hinaus auch Reaktionen der Proteinseitengruppen und des Proteingerüsts molekular‐ und zeitaufgelöst erfassen.
Klaus Genvert, Georg Souvignier
openaire +1 more source
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
openaire +2 more sources
Quantitative analysis of shales by KBr-FTIR and micro-FTIR
Fuel, 2014Abstract Fine-grained texture, complex mineralogical composition, and diverse organic matter types cause large heterogeneity of shale, and the resulting analytical challenge can only be met with high-resolution techniques. Quantitative determination of clay minerals, quartz and carbonates, as well as organic matter in shale on a micrometer-scale is ...
Yanyan Chen +3 more
openaire +1 more source
Fourier transform infrared (FTIR) spectroscopy
Photosynthesis Research, 2009Fourier transform infrared (FTIR) spectroscopy probes the vibrational properties of amino acids and cofactors, which are sensitive to minute structural changes. The lack of specificity of this technique, on the one hand, permits us to probe directly the vibrational properties of almost all the cofactors, amino acid side chains, and of water molecules ...
Berthomieu, Catherine +1 more
openaire +2 more sources
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
openaire +2 more sources
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
openaire +2 more sources
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
openaire +2 more sources
FTIR And TGA/FTIR Characterization Of A Polyethylene Photodegradable Concentrate
SPIE Proceedings, 1989An integrated thermogravimetric/Fourier transform infrared (TGA/FTIR) system is used to detect the presence of a fatty acid in a commercial, photodegradable, polyethylene concentrate. This technique is simple, rapid, convenient, and requires minimal sample manipulation. It can be very useful for monitoring the differences in resin concentrates. Results
T. Kumar, D. J. Johnson, D. A. Compton
openaire +1 more source
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
openaire +1 more source