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Artykuły w czasopismach na temat „Fourier transform infrared spectra”

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Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Téllez S, Claudio A., Eduardo Hollauer, Tiago Giannerini, et al. "Fourier transform infrared and Raman spectra." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 60, no. 8-9 (2004): 2171–80. http://dx.doi.org/10.1016/j.saa.2003.11.011.

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Donahue, Steven M., Chris W. Brown, and Robert J. Obremski. "Multicomponent Analysis Using Fourier Transform Infrared and UV Spectra." Applied Spectroscopy 42, no. 2 (1988): 353–59. http://dx.doi.org/10.1366/0003702884428176.

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Two- and three-component mixtures of methylated benzenes were analyzed with the use of both infrared and UV spectra. The spectra of known mixtures were Fourier transformed and coefficients from the transforms selected to form coordinates of vectors. The resulting vectors were subjected to factor analysis to obtain representations for multicomponent analysis. A total of eight data sets were analyzed by factor analysis after preprocessing by taking the Fourier transforms of the spectra. The eight data sets were also analyzed by the P-matrix method (inverse Beer's law) in the spectral domain afte

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3

Petibois, Cyril, Georges Cazorla, André Cassaigne, and Gérard Déléris. "Plasma Protein Contents Determined by Fourier-Transform Infrared Spectrometry." Clinical Chemistry 47, no. 4 (2001): 730–38. http://dx.doi.org/10.1093/clinchem/47.4.730.

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Abstract Background: Fourier-transform infrared (FT-IR) spectrometry has been used to measure small molecules in plasma. We wished to extend this use to measurement of plasma proteins. Methods: We analyzed plasma proteins, glucose, lactate, and urea in 49 blood samples from 35 healthy subjects and 14 patients. For determining the concentration of each biomolecule, the method used the following steps: (a) The biomolecule was sought for which the correlation between spectral range areas of plasma FT-IR spectra and concentrations determined by comparison method was greatest. (b) The IR absorption

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4

Ridder, T., T. Warneke, and J. Notholt. "Source brightness fluctuation correction of solar absorption Fourier Transform mid infrared spectra." Atmospheric Measurement Techniques Discussions 4, no. 1 (2011): 443–59. http://dx.doi.org/10.5194/amtd-4-443-2011.

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Abstract. Solar absorption Fourier Transform infrared spectrometry is considered a precise and accurate method for the observation of trace gases in the atmosphere. The precision and accuracy of such measurements are dependent on the stability of the light source. Fluctuations in the source brightness reduce the precision and accuracy of the trace gas concentrations, but cannot always be avoided. Thus, a strong effort is made within the community to reduce the impact of source brightness fluctuations by applying a correction on the spectra following the measurements. So far, it could be shown

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5

Spencer, Richard G., Ericka F. Calton, and Nancy Pleshko Camacho. "Statistical comparison of Fourier transform infrared spectra." Journal of Biomedical Optics 11, no. 6 (2006): 064023. http://dx.doi.org/10.1117/1.2393231.

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6

Michaels, Chris A., Tony Masiello, and Pamela M. Chu. "Fourier Transform Spectrometry with a Near-Infrared Supercontinuum Source." Applied Spectroscopy 63, no. 5 (2009): 538–43. http://dx.doi.org/10.1366/000370209788346904.

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Optical fiber based supercontinuum light sources combine the brightness of lasers with the broad bandwidth of incandescent lamps and thus are promising candidates for sources in spectroscopic applications requiring high brightness and broad bandwidth. Herein, near-infrared (IR) Fourier transform (FT) spectrometry with a supercontinuum (SC) light source is investigated. The efficient, collimated propagation of broad bandwidth SC light through an 18 m path length multipass cell is demonstrated. A normalized spectral difference is calculated for the SC spectrum on consecutive FT mirror scans and

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7

Elaraby, Samar, Sherif M. Abuelenin, Adel Moussa, and Yasser M. Sabry. "Deep Learning on Synthesized Sensor Characteristics and Transmission Spectra Enabling MEMS-Based Spectroscopic Gas Analysis beyond the Fourier Transform Limit." Foundations 1, no. 2 (2021): 304–17. http://dx.doi.org/10.3390/foundations1020022.

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Miniaturized Fourier transform infrared spectrometers serve emerging market needs in many applications such as gas analysis. The miniaturization comes at the cost of lower performance than bench-top instrumentation, especially for the spectral resolution. However, higher spectral resolution is needed for better identification of the composition of materials. This article presents a convolutional neural network (CNN) for 3X resolution enhancement of the measured infrared gas spectra using a Fourier transform infrared (FTIR) spectrometer beyond the transform limit. The proposed network extracts

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8

McClure, William Fred, Hisashi Maeda, Jian Dong, Yongliang Liu, and Yukihiro Ozaki. "Two-Dimensional Correlation of Fourier Transform Near-Infrared and Fourier Transform Raman Spectra I: Mixtures of Sugar and Protein." Applied Spectroscopy 50, no. 4 (1996): 467–75. http://dx.doi.org/10.1366/0003702963906177.

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Two-dimensional (2D) correlation of near-infrared (NIR) and Raman spectra was carried out for mixtures of protein (lysozyme) and sugar (sucrose) to investigate the potential of this technique for qualitative NIR spectral interpretation. Cross-correlation by least-squares was employed to assess changes in both sets of spectra which result from changes in the set of sample spectra. Fourier transform (FT) NIR and NIR-excited FT-Raman spectra were measured for each of the samples under the same conditions, and point-for-point 2D cross-correlation was calculated. In this technique, each wavenumber

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9

Wang, Shuai, Xin Lu Feng, Jun Zhou, and Xue Mei Wang. "Fourier Transform Near Infrared Spectroscopy Analysis of Power Plant Coal Quality." Advanced Materials Research 236-238 (May 2011): 799–803. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.799.

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Studied the correlation of near-infrared spectra data and six coal indices, found ash and calorific value has low correlations with spectra data; then use dynamic principal components PLS method predict the coal index; this method could predict Volatile and Hydrogen content better, however, the ability to predict Carbon content and Nitrogen content is lower. It is found that using reflection spectroscopy analyzes the coal need a strong energy source, because the color of coal is deep and reflection is very weak, this leads to noisy signals. Only by improving the energy source could solve the p

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10

Králová, M., Z. Procházková, V. Svobodová, E. Mařicová, B. Janštová, and L. Vorlová. "Discriminant analysis of Olomouc curd cheese by Fourier transform near infrared spectroscopy." Czech Journal of Food Sciences 32, No. 1 (2014): 31–36. http://dx.doi.org/10.17221/525/2012-cjfs.

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We used the discriminant analysis of curd cheese during storage by Fourier transform near infrared spectroscopy method (FT-NIRs). Olomouc curd cheese samples were stored at 5 and at 20&deg;C during seven weeks. The spectra of samples were measured at the integration sphere in reflectance mode with the use of a compressive cell in the spectral range of 10&nbsp;000&ndash;4000 cm<sup>&ndash;1</sup> with 100 scans. Ten principal components were used for all the calibration models. Great similarity between the samples stored at 5 and 20&deg;C was found. Twelve sample

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11

Masutani, Koji, Hisashi Sugisawa, Akira Yokota, Yukio Furukawa, and Mitsuo Tasumi. "Asynchronous Time-Resolved Fourier Transform Infrared Spectroscopy." Applied Spectroscopy 46, no. 4 (1992): 560–67. http://dx.doi.org/10.1366/0003702924124871.

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A novel asynchronous time-resolved FT-IR spectrophotometer based on a conventional continuous-scan interferometer has been developed. In contrast to the existing methods, this method does not require the synchronization between the signal for time resolving and that for the sampling of the A/D converter. The signal-processing assembly for time-resolved measurements consists of a pulse generator, a pulse delay circuit, a gate circuit, and a low-pass filter. This assembly can be attached to any conventional FT-IR spectrophotometer. By this method, time-resolved spectra without any spectral disto

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12

Gurka, Donald F., Jimmie W. Brasch, Russell H. Barnes, Charles J. Riggle, and Sidney Bourne. "Micro-Diffuse Reflectance and Matrix Isolation Fourier Transform Infrared Techniques for the Identification of Tetrachlorodibenzodioxins." Applied Spectroscopy 40, no. 7 (1986): 978–91. http://dx.doi.org/10.1366/0003702864507864.

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Micro-diffuse reflectance Fourier transform infrared (DRIFT) and matrix isolation (MI) Fourier transform infrared spectra of the 22 tetrachlorodibenzodioxin (TCDD) isomers have been recorded. The DRIFT and MI techniques required about four minutes and one-half minute, respectively, of signal averaging to produce high signal-to-noise (S/N) spectra on low-nanogram-level samples. Spectral subtraction was employed to remove DRIFT solvent impurity interferences. The validity of the DRIFT subtraction technique was demonstrated by comparison of the corrected DRIFT, with the chromatographically pure,

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13

Barik, Bijay Kumar, Madhukar Mallya H., Rajeev K. Sinha, and Santhosh Chidangi. "Structure and Spectroscopic Studies of Aloe-emodin and Chrysophanol using Density Functional Theory and Experimental Methods-=SUP=-*-=/SUP=-." Оптика и спектроскопия 130, no. 6 (2022): 825. http://dx.doi.org/10.21883/os.2022.06.52621.39-22.

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The experimental and theoretical spectra studies of Aloe-emodin and Chrysophanol are reported in this work. Experimentally the Fourier transform infrared, Raman, and UV-Visible spectra were recorded for Aloe-emodin and Chrysophanol. With the help of density functional theory and B3LYP, the functional triple zeta basis set def-TZVP was used to optimize structures and calculate the vibrational frequencies. It was found out that the conformations of Aloe-emodin and Chrysophanol with the double intramolecular hydrogen bonds between the OH and C=O groups were the most stable conformations among the

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14

Park, Jae H., and Bruno Carli. "Analysis of far-infrared emission Fourier transform spectra." Applied Optics 25, no. 19 (1986): 3490. http://dx.doi.org/10.1364/ao.25.003490.

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15

Bretzlaff, R. S., and T. B. Bahder. "Apodization effects in Fourier transform infrared difference spectra." Revue de Physique Appliquée 21, no. 12 (1986): 833–44. http://dx.doi.org/10.1051/rphysap:019860021012083300.

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16

McKellar, A. R. W., James B. Burkholder, Amitabha Sinha, and Carleton J. Howard. "Fourier transform infrared spectra of the FO2 radical." Journal of Molecular Spectroscopy 125, no. 2 (1987): 288–308. http://dx.doi.org/10.1016/0022-2852(87)90100-7.

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17

Leroux, Natalie, and Thérèse Zeegers-Huyskens. "Fourier-Transform Infrared and Raman Spectra of Glutarimide." Spectroscopy Letters 32, no. 1 (1999): 47–56. http://dx.doi.org/10.1080/00387019909349966.

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18

Mark, Howard L., and Peter R. Griffiths. "Analysis of Noise in Fourier Transform Infrared Spectra." Applied Spectroscopy 56, no. 5 (2002): 633–39. http://dx.doi.org/10.1366/0003702021955196.

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The currently accepted theory of spectroscopic noise causes most spectroscopists to accept the statement that when the limiting noise source is constant detector noise (e.g., as in mid- and near-IR spectroscopy) the noise of a transmittance spectrum is also constant, and independent of the sample transmittance. A careful examination of the effect of noise on spectra, however, reveals that most of the previous derivations have neglected the effect of noise in the reference reading on the noise content of the spectra. The consequences range from the fact that even with constant detector noise, t

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19

Lipkus, Alan H., Thomas J. Lenk, Krishnan K. Chittur, and R. Michael Gendreau. "Cluster analysis of protein fourier transform infrared spectra." Biopolymers 27, no. 11 (1988): 1831–38. http://dx.doi.org/10.1002/bip.360271111.

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Deng, Yasong, Liang Xu, Ling Jin, et al. "Research on a Data Preprocessing Method for a Vehicle-Mounted Solar Occultation Flux–Fourier Transform Infrared Spectrometer." Photonics 11, no. 6 (2024): 541. http://dx.doi.org/10.3390/photonics11060541.

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A vehicle-mounted solar occultation flux–Fourier transform infrared spectrometer uses the sun as an infrared light source to quantify molecular absorption in the atmosphere. It can be used for the rapid three-dimensional monitoring of pollutant emissions and the column concentration monitoring of greenhouse gases. The system has the advantages of high mobility and a capacity for noncontact measurement and measurement over long distances. However, in vehicle-mounted applications, vehicle bumps and obstacles introduce aberrations in the measured spectra, affecting the accuracy of gas concentrati

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21

Civiš, S., P. Kubelík, M. Ferus, V. E. Chernov, E. M. Zanozina, and L. Juha. "Laser ablation of an indium target: time-resolved Fourier-transform infrared spectra of In I in the 700–7700 cm−1 range." J. Anal. At. Spectrom. 29, no. 12 (2014): 2275–83. http://dx.doi.org/10.1039/c4ja00123k.

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Nemes, László. "INFRARED EMISSION SPECTROSCOPY OF CARBON VAPORS AND PLASMAS, A SHORT OVERVIEW." Contributions, Section of Natural, Mathematical and Biotechnical Sciences 38, no. 1 (2017): 27. http://dx.doi.org/10.20903/csnmbs.masa.2017.38.1.98.

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A short review is given about infrared emission spectroscopy of hot carbon vapors and plasmas obtained using Fourier transform infrared emission and laser induced breakdown LIB spectroscopies in the mid-infrared range. Labor-atory FTIR emission spectra contain vibrational bands from fullerenes C60, C70 whereas laboratory mid-infrared LIB spectra show bands that belong to mostly unidentified carbon molecules and clusters. Both kinds of spectra are com-pared to spectral results from infrared astronomy. The spectra are discussed with a view for possible applications in carbon nanostructure resear

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Ullah, Ramzan, Ishaq Ahmad, and Yuxiang Zheng. "Fourier Transform Infrared Spectroscopy of “Bisphenol A”." Journal of Spectroscopy 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/2073613.

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FTIR (400–4000 cm−1) spectra of “Bisphenol A” are presented. Absorption peaks (400–4000 cm−1) are assigned on the basis of Density Functional Theory (DFT) with configuration as B3LYP 6-311G++ (3df 3pd). Calculated absorption peaks are in reasonable reconciliation with experimental absorption peaks after scaling with scale factor of 0.9679 except C-H and O-H stretching vibrations.

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Krepelka, Pavel, Iveta Hynstova, Roman Pytel, Fernando Pérez-Rodríguez, Jean-Michel Roger, and Petr Drexler. "Curve fitting in Fourier transform near infrared spectroscopy used for the analysis of bacterial cells." Journal of Near Infrared Spectroscopy 25, no. 3 (2017): 151–64. http://dx.doi.org/10.1177/0967033517705032.

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Infrared spectroscopy is a prominent molecular technique for bacterial analysis. Within its context, near infrared spectroscopy in particular brings benefits over other vibrational approaches; these advantages include, for example, lower sensitivity to water, high penetration depth and low cost. However, near infrared spectroscopy is not popular within microbiology, because the spectra of organic samples are difficult to interpret. We propose a comparison of spectral curve-fitting methods, namely, techniques that facilitate the interpretation of most peaks, simplify the spectra and improve the

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Labbé, Nicole, Xiaofei P. Ye, Jennifer A. Franklin, Alvin R. Womac, Donald D. Tyler, and Timothy G. Rials. "Analysis of switchgrass characteristics using near infrared spectroscopy." BioResources 3, no. 4 (2008): 1329–48. http://dx.doi.org/10.15376/biores.3.4.1329-1348.

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Switchgrass varieties grown under various environments were investigated by dispersive and Fourier Transform Near-Infrared (NIR) spectrometers. The collected NIR spectra were analyzed using multivariate approaches. More specifically, principal component analysis (PCA) and projection to latent structures (PLS) regression techniques were employed to classify and predict characteristics of the switchgrass samples. The multivariate results were compared to reflectance indices that are commonly used to study the physiological performance of plants. From near infrared spectra, discrimination between

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Jagannathan, S., J. R. Cooper, and C. L. Wilkins. "Matrix Effects in Matrix Isolation Infrared Spectroscopy." Applied Spectroscopy 43, no. 5 (1989): 781–86. http://dx.doi.org/10.1366/0003702894202274.

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A major factor limiting extensive use of matrix isolation gas chromatography-Fourier transform infrared spectrometry is the incompatibility of matrix-isolated spectra with available vapor- or condensed-phase spectral data bases. Here, matrix and surface effects on matrix isolation infrared spectra of organic molecules are investigated. Use of xenon at −215°C (58 K) to obtain matrix isolation spectra that are similar to condensed-phase spectra is demonstrated. Finally, the effect of temperature on reflection-absorption infrared spectra of matrix-isolated molecules is discussed, and guidelines f

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Tarkošová, Jolana, and Jana Čopíková. "Fourier Transform near Infrared Spectroscopy Applied to Analysis of Chocolate." Journal of Near Infrared Spectroscopy 8, no. 4 (2000): 251–57. http://dx.doi.org/10.1255/jnirs.285.

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Fourier transform near infrared (FT-NIR) spectroscopy was used to establish calibration equations with the aim of determining sucrose, lactose, fat and moisture in chocolate. The possibility of using FT-NIR spectroscopy for evaluating rheological properties (viscosity and yield) of chocolate was also investigated. The concentrations of individual components and the values of viscosity and yield obtained by standard methods were used as reference values. The spectra of 96 chocolate samples were recorded in reflectance mode in the range of 910–2500 nm using an FT-NIR Nicolet Avatar 360N spectrom

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Jiang, Eric Y., William J. McCarthy, David L. Drapcho, and Richard A. Crocombe. "Generalized Two-Dimensional Fourier Transform Infrared Photoacoustic Spectral Depth-Profiling Analysis." Applied Spectroscopy 51, no. 11 (1997): 1736–40. http://dx.doi.org/10.1366/0003702971939442.

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This paper reports the first application of a generalized two-dimensional (G2D) correlation method in photoacoustic spectral depth-profiling analysis of laminate/heterogeneous samples. In this method, photoacoustic magnitude spectra at different modulation frequencies are used to generate two-dimensional (2D) correlation spectra. The relative spatial origins of correlated signals are then determined from the signs of the corresponding contours. The unique features and advantages of this technique over previously reported depth-profiling methods are demonstrated and discussed. These include sim

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Cao, Zhen, Yongying Liu, and Jiancheng Zhao. "Efficient Discrimination of Some Moss Species by Fourier Transform Infrared Spectroscopy and Chemometrics." Journal of Spectroscopy 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/191796.

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Fourier transform infrared spectroscopy (FTIR) technique was used to classify 16 species from three moss families (Mielichhoferiaceae, Bryaceae, and Mniaceae). The FTIR spectra ranging from 4000 cm−1to 400 cm−1of the 16 species were obtained. To group the spectra according to their spectral similarity in a dendrogram, cluster analysis and principal component analysis (PCA) were performed. Cluster analysis combined with PCA was used to give a rough result of classification among the moss samples. However, some species belonging to the same genus exhibited very similar chemical components and si

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Ozaki, Yukihiro. "Biological applications of near- IR fourier-transform Raman microspectroscopy." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1530–31. http://dx.doi.org/10.1017/s0424820100132285.

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Recently-developed near-infrared Fourier transform (FT)-Raman spectroscopy has received keen interest of researchers in bio-Raman field because near-infrared excitation can avoid mostly fluorescence and photodecomposition, which have been two major drawbacks of Raman spectroscopy in its biological and medical applications. Introduction of FT-Raman microspectroscopy makes near-infrared FT-Raman spectroscopy more useful for studying biomedical materials. The purpose of the present paper is to demonstrate the potential of near-infrared FT-Raman microspectroscopy in nondestructive structural analy

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Beduhn, Donald L., and Robert L. White. "Advantages of Dual-Beam Interferometry in Fourier Transform Infrared Spectrometry." Applied Spectroscopy 40, no. 5 (1986): 628–32. http://dx.doi.org/10.1366/0003702864508520.

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A dual-beam Fourier transform infrared spectrometer (FT-IR) is described. Sensitivity improvement, photometric accuracy, and instrument stability are evaluated by comparing dual-beam spectra with conventional single-beam spectra. Dual-beam FT-IR data acquisitions require an order of magnitude less measurement time than single-beam acquisitions for spectra of comparable signal-to-noise ratios. Application of dual-beam FT-IR for analysis of a highly transmitting sample is discussed. Single fiber analysis without masking and without an infrared microscope is described.

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Wood, Bayden R., Brian Tait, and Donald McNaughton. "Fourier Transform Infrared Spectroscopy as a Method for Monitoring the Molecular Dynamics of Lymphocyte Activation." Applied Spectroscopy 54, no. 3 (2000): 353–59. http://dx.doi.org/10.1366/0003702001949627.

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In this paper we report the application of Fourier transform infrared (FT-IR) microspectroscopy to monitor the molecular dynamics of lymphocyte activation. Infrared spectra of lymphocytes stimulated with the mitogen phytohaemagglutinin-L show spectral features 15 min after initial stimulation that are not apparent in resting lymphocytes. By analyzing the second-order derivatives of the raw spectra and applying principal components analysis (PCA), we conclude that the major spectral changes observed in the first hour result from an increase in overall RNA synthesis. Bands characteristic of RNA

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Grainger, James, and Leslie T. Gelbaum. "Tetrachlorodibenzo-p-Dioxin Isomer Differentiation by Capillary Gas Chromatography Fourier Transform-Infrared Spectroscopy." Applied Spectroscopy 41, no. 5 (1987): 809–20. http://dx.doi.org/10.1366/0003702874448391.

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Reference infrared vapor-phase spectra of the 22 tetrachlorodibenzo-dioxin (TCDD) isomers were recorded at low microgram concentrations. These reference spectra of synthetic mixture components separated chromatographically or by spectral subtraction exhibit distinct infrared spectra for each isomer. The infrared frequencies are delineated in correlation tables and are interpreted in terms of substitution patterns which determine the strength of the ether linkage. Absorbance values in the 1330–1280 cm−1 (C-O-C asymmetric stretch) region correlate with specific substitution patterns and molecula

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Schade, Ulrich, Dawei Cao, Ljiljana Puskar, Eglof Ritter, and Jörg Beckmann. "Removal of Etalon Features in the Far-Infrared–Terahertz Transmittance Spectra of Thin Polymer Films." Applied Spectroscopy 74, no. 12 (2020): 1530–39. http://dx.doi.org/10.1177/0003702820922295.

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Etalon features in infrared spectra of stratified samples, their influence on the interpretation, and methods to circumvent their presence in infrared spectra have been in discussion for decades. This paper focuses on the application of a method originally developed to remove interference fringes in the mid-infrared spectra for far-infrared Fourier transform spectroscopy on thin polymer films. We show that the total transmittance reflectance technique, commonly used for mid-infrared, also works successfully in the far-infrared spectral range where other approaches fail. Experimental spectra ob

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Graf, R. T., F. Eng, J. L. Koenig, and H. Ishida. "Polarization Modulation Fourier Transform Infrared Ellipsometry of Thin Polymer Films." Applied Spectroscopy 40, no. 4 (1986): 498–503. http://dx.doi.org/10.1366/0003702864508818.

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Polarization modulation infrared ellipsometric spectra were collected on an FT-IR spectrometer, with the use of two linear polarizers and a photoelastic modulator. Samples consisted of thin poly(vinyl acetate) and poly(methyl methacrylate) films on gold substrates. The relative phase retardation (delta) and relative amplitude (psi) were derived from these measurements. These spectra were superior to those from static infrared ellipsometry measurements on the same samples. The thickness and optical constants of the films were calculated from the ellipsometric measurements and compared with refe

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Jaakkola, P., J. D. Tate, M. Paakkunainen, J. Kauppinen, and P. Saarinen. "Instrumental Resolution Considerations for Fourier Transform Infrared Gas-Phase Spectroscopy." Applied Spectroscopy 51, no. 8 (1997): 1159–69. http://dx.doi.org/10.1366/0003702971941683.

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Instrumental resolution has a significant effect on the performance of Fourier transform infrared (FT-IR) spectrometers used for gasphase analysis. Low-resolution FT-IR spectroscopy offers some valuable advantages compared with the traditional high-resolution FT-IR gas-phase spectroscopy, especially in nonlaboratory environments. First, high signal-to-noise ratio (SNR) spectra can be acquired in field conditions without the use of traditional liquid nitrogen-cooled detectors. Second, the dynamic range for quantitative analysis is larger for low-resolution spectroscopy than for high-resolution

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Clavijo-Maldonado, Alejandro, Enio Ferreira, Jorge E. Pérez-Cárdenas, Carlos Vargas- Hernández, and Fredy A. Rivera-Páez. "ELISA and Fourier-transform infrared spectroscopy." Veterinarska stanica 53, no. 4 (2021): 389–402. http://dx.doi.org/10.46419/vs.53.4.4.

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ELISA and FTIR assay techniques were used to identify HER2 gene expression in the blood serum of female dogs and to characterise the biochemical composition. ELISA tests assess the stage of primary tumour development and evolution, while FTIR allows for a complete characterisation of biomolecules associated with the tumoral process. Blood serum samples from 30 female dogs were analysed. Concentrations of the HER2/neu protein were detected using ELISA kits specific for canine and human detection. Infrared spectroscopy (IR) was conducted in absorbance mode at a frequency range of 400–4000 cm-1 a

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Shang, Jing, Xinran Wu, Keqing Hu, Zongyao Huyan, Qi Li, and Xiuzhu Yu. "A simple and practical method to determine peroxide values in edible oilsviainfrared quartz cuvette-based Fourier transform infrared spectroscopy." Analytical Methods 10, no. 29 (2018): 3675–79. http://dx.doi.org/10.1039/c8ay00594j.

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A rapid and simple method was developed to determine the peroxide values (PVs) of edible oils by Fourier transform infrared spectroscopy. The spectra of edible oils were obtained using an infrared quartz cuvette (IQC) as a spectral accessory. The IQC-based FTIR method is more feasible and accurate than the traditional method.

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Ridder, T., T. Warneke, and J. Notholt. "Source brightness fluctuation correction of solar absorption fourier transform mid infrared spectra." Atmospheric Measurement Techniques 4, no. 6 (2011): 1045–51. http://dx.doi.org/10.5194/amt-4-1045-2011.

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Abstract. The precision and accuracy of trace gas observations using solar absorption Fourier Transform infrared spectrometry depend on the stability of the light source. Fluctuations in the source brightness, however, cannot always be avoided. Current correction schemes, which calculate a corrected interferogram as the ratio of the raw DC interferogram and a smoothed DC interferogram, are applicable only to near infrared measurements. Spectra in the mid infrared spectral region below 2000 cm−1 are generally considered uncorrectable, if they are measured with a MCT detector. Such measurements

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Rigas, B., S. Morgello, I. S. Goldman, and P. T. Wong. "Human colorectal cancers display abnormal Fourier-transform infrared spectra." Proceedings of the National Academy of Sciences 87, no. 20 (1990): 8140–44. http://dx.doi.org/10.1073/pnas.87.20.8140.

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Gordon, Iouli E., Dominique R. T. Appadoo, Alireza Shayesteh, Kaley A. Walker, and Peter F. Bernath. "Fourier transform infrared emission spectra of MnH and MnD." Journal of Molecular Spectroscopy 229, no. 1 (2005): 145–49. http://dx.doi.org/10.1016/j.jms.2004.08.010.

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Matsuhiro, Betty, and Pilar Rivas. "Second-derivative Fourier transform infrared spectra of seaweed galactans." Journal of Applied Phycology 5, no. 1 (1993): 45–51. http://dx.doi.org/10.1007/bf02182421.

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Matsuhiro, Betty, and Pilar Rivas. "Second-derivative Fourier transform infrared spectra of seaweed galactans." Journal of Applied Phycology 6, no. 1 (1994): 83. http://dx.doi.org/10.1007/bf02185910.

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Narang, S. N., V. B. Kartha, and N. D. Patel. "Fourier transform infrared spectra and normal vibrations of CuO." Physica C: Superconductivity 204, no. 1-2 (1992): 8–14. http://dx.doi.org/10.1016/0921-4534(92)90566-u.

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Fangxin, Liu, Yang Jinlong, and Zhao Tianpeng. "Raman and Fourier-transform infrared photoacoustic spectra of granularZrO2." Physical Review B 55, no. 14 (1997): 8847–51. http://dx.doi.org/10.1103/physrevb.55.8847.

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Shayesteh, A., D. R. T. Appadoo, I. Gordon, R. J. Le Roy, and P. F. Bernath. "Fourier transform infrared emission spectra of MgH and MgD." Journal of Chemical Physics 120, no. 21 (2004): 10002–8. http://dx.doi.org/10.1063/1.1724821.

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Wang, Ting, Yao Xu, Deguo Du, and Feng Gai. "Determining ?-sheet stability by Fourier transform infrared difference spectra." Biopolymers 75, no. 2 (2004): 163–72. http://dx.doi.org/10.1002/bip.20101.

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Paul, S. O., C. J. H. Schutte, and P. J. Hendra. "The Fourier Transform Raman and infrared spectra of naphthazarin." Spectrochimica Acta Part A: Molecular Spectroscopy 46, no. 2 (1990): 323–29. http://dx.doi.org/10.1016/0584-8539(90)80101-4.

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Lewis, E. Neil, Linda H. Kidder, David S. Lester, Victor F. Kalasinsky, and Ira W. Levin. "Fourier transform infrared chemical imaging microscopy: Applications in neurotoxicity and pathology." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 258–59. http://dx.doi.org/10.1017/s0424820100163757.

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We have developed a new Fourier transform infrared chemical imaging technique which, when coupled with powerful multivariate data processing techniques, allows the visualization of complex intrinsic chemical distributions in biological materials with the potential for performing rapid histological examinations. Integrating spectroscopy with sample visualization and digital image processing is a potent combination of what have traditionally been two distinct methods for studying the chemistry and morphology of a sample. This synergy has been referred to as chemical imaging or hyperspectral imag

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Gordeeva, I. V., D. A. Melnikov, V. N. Gorbatovа, D. S. Reznichenko, and Yu A. Naumova. "Investigation of modified bitumen binders via Fourier-transform infrared spectroscopy." Fine Chemical Technologies 15, no. 2 (2020): 56–66. http://dx.doi.org/10.32362/2410-6593-2020-15-2-56-66.

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Objectives. This study evaluates the effect of the modification process on the group composition of bitumen and bitumen binders containing rubber powder and hybrid modifier that is based on styrene–butadiene thermoplastic elastomer and rubber crumb. The aim of the study was to determine the presence or absence of functional groups that reflect the direction of physicochemical processes during the preparation of a hybrid modifier in rotary dispersers and during the modification of bitumen binders. Methods. Rubber powder and hybrid modifier were obtained by high-temperature shear grinding using

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