Results 291 to 300 of about 360,498 (338)
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Infrared Refraction Spectroscopy
Applied Spectroscopy, 2021We suggest a new modality of infrared spectroscopy termed Infrared Refraction Spectroscopy, which is complimentary to absorption spectroscopy. The beauty of this new modality lies not only in its simplicity but also in the fact that it closes an important gap: It allows to quantitatively interpret reflectance spectra by simplest means.
Thomas G. Mayerhöfer +4 more
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Ultrafast infrared spectroscopy
Science, 1992Recent advances in ultrafast infrared spectroscopy are described, including experimental details and fundamental limitations. The utility of this technique is illustrated with two recent examples.
William H. Woodruff +2 more
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Infrared spectroscopy of retinoids
Analytical Biochemistry, 1983The Fourier transform infrared spectra of 15 purified retinoids were compared. Retinoids with conjugated C = O groups revealed the presence of a band between 1730 and 1630 cm-1 X A characteristic of retinoids is the presence of a band between 1650 and 1620 cm-1 due to C = C stretching where three to four conjugated C = O and C = C bonds were present or
Bruce A. Halley +3 more
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Infrared spectroscopy of glycolipids
Chemistry and Physics of Lipids, 1998The application of infrared spectroscopy to the physicochemical characterization of glycolipids as biologically important membrane constituents is described. In this contribution, the analysis of diacyl- and sphingosine-based (cerebroside, ganglioside) oligosaccharides and the class of lipid A-anchored lipooligo- and polysaccharides is reviewed ...
Ulrich Seydel, Klaus Brandenburg
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Infrared spectroscopy of lipids
Journal of the American Oil Chemists' Society, 1965AbstractDuring the last ten years, considerable advances have been made in the application of infrared spectroscopy to the study of lipids. This work reviews this contribution.Starting with a brief discussion of the basis of the technique, applications of a qualitative and quantitative kind are described.
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Procedures for Infrared Spectroscopy
Applied Optics, 1972Three procedures are described: a modified Pfund triple-pass absorption cell; an improved image slicer; and new achromatic, doublet lenses. Design parameters for prism dispersion for various prism angles-both simple and composite prisms-are displayed by graphs. The relationships of dispersion and transmission are useful in designing prism spectrometers,
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Clinics in Perinatology, 1991
Near-infrared spectroscopy is a new technique for noninvasive monitoring of tissue oxygenation and hemodynamics. Until now, it has been used solely for research into the physiopathology of the brain. This technique offers considerable untapped potential for research and clinical applications.
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Near-infrared spectroscopy is a new technique for noninvasive monitoring of tissue oxygenation and hemodynamics. Until now, it has been used solely for research into the physiopathology of the brain. This technique offers considerable untapped potential for research and clinical applications.
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European Journal of Pediatrics, 1995
Near infrared spectroscopy is a novel technique still at an early stage in its development. Current technology has been used to measure cerebral haemodynamics and oxygenation at the cotside in sick preterm infants, to observe cerebral oxygenation during birth, and in other situations such as cardiac surgery. At present it is best regarded as a research
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Near infrared spectroscopy is a novel technique still at an early stage in its development. Current technology has been used to measure cerebral haemodynamics and oxygenation at the cotside in sick preterm infants, to observe cerebral oxygenation during birth, and in other situations such as cardiac surgery. At present it is best regarded as a research
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Infrared Spectroscopy of Micas
Reviews in Mineralogy and Geochemistry, 2002Infrared (IR) spectroscopy can provide information about details of the atomic structure, lattice dynamics and the chemistry of mineral phases that may not be readily obtained from other analytical techniques. IR spectra originate in transitions between vibrational energy levels of vibrating atomic groups and they are observed as absorption spectra ...
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