Results 251 to 260 of about 1,608,801 (307)

Vacuum Ultraviolet Spectroscopy

Applied Spectroscopy, 1969
A review is presented on vuv spectroscopy, discussing the optics necessary, instrumentation used in absorption and emission vuv, and measurement of wavelength and intensities. Finally, several applications of the technique of interest to the chemist are presented.
MILAZZO G, CECCHETTI, GAETANO
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Ultraviolet spectroscopy of anticonvulsant enaminones

Bioorganic & Medicinal Chemistry, 2002
The ultraviolet (UV) spectra of selected enaminones were determined in acidic, alkaline and neutral media and compared to their anticonvulsant activities. The wavelength of maximum absorption and molar absorptivity were compared with the anticonvulsant activity of the selected secondary and tertiary enaminones, and general inferences were made.
Ivan O, Edafiogho, O A, Phillips, M, Abdel-Hamid, A A M, Ali, W C, Matowe, A, El-Hashim, S B, Kombian   +6 more
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Planetary Ultraviolet Spectroscopy

Applied Optics, 1969
The emission spectra of a planetary dayglow are produced by the resonance scattering of atoms, the fluorescence scattering of molecules, and the photoelectron excitation of the atoms and molecules that are the major constituents of the atmosphere. The absorption spectra of a planetary atmosphere are the result of the combination of ground reflection ...
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Measurement of Halothane by Ultraviolet Spectroscopy

Anesthesia & Analgesia, 1980
Halothane absorbs strongly in the ultraviolet region of the spectrum. This property has been employed to measure the concentration of halothane in samples in which the effect of halothane on enzyme kinetics was being studied. Halothane can be completely extracted into heptane, displays a concentration-dependent linear increase in absorbance over a ...
T J, Blanck, M, Thompson
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Characterization of Bacteria by Ultraviolet Spectroscopy

Journal of Infectious Diseases, 1973
The recent application of circular-dichroism (CD) and absorption spectra to turbid suspensions of cell membranes [1] and the subsequent analysis of scattering effects on the spectra [1, 2] have opened the way for the extension of such methods to more complicated and highly organized biological systems, such as bacterial cells. The spectra of biological
M, Torten, A S, Schneider
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Broadband Near-Ultraviolet Dual Comb Spectroscopy [PDF]

Optica
The highly energetic photons of ultraviolet light drive electronic and rovibronic transitions in all molecular species. This radiation is thus a prime tool for strongly selective spectroscopic fingerprinting and real-time environmental monitoring if ...
Birgitta Bernhardt, Alexander Eber, Robert di Vora   +2 more
exaly   +2 more sources

Ultraviolet Absorption Spectroscopy of Peptides

2013
UV absorption spectroscopy is commonly used with peptides for determining concentration and enzyme activity, but high-resolution UV spectra can also provide information on peptide secondary and tertiary structure and association behavior. New developments using temperature- and cation-dependent high-resolution second derivative absorption methods can ...
Mangala R, Liyanage, Kunal, Bakshi, David B, Volkin, C Russell, Middaugh   +3 more
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Ultraviolet Spectroscopy

1972
Investigation into many branches of chemistry and physics reUes extensively on the analysis of absorption spectra in the ultraviolet region (200 to 400 μm). The analysis of the ultraviolet (UV) spectrum depends explicitly on the needs of the investigator.
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Ultraviolet-visible spectroscopy

1996
This chapter tells the history of the arrival of ultraviolet (UV) spectroscopic analysis during the 1930s, which was an important milestone in analytical chemistry. It demonstrated the advantages of non-destructive analysis. The chapter discusses the benefits brought by this development, such as vast savings in time, and the ability to work with much ...
Laurence M. Harwood, Timothy D.W. Claridge   +1 more
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Far-Ultraviolet Spectroscopy and Deep-Ultraviolet Spectroscopy: Industrial Applications

2015
FUV or DUV absorption spectrum has very strong absorptivity with a steep absorption edge. Since the spectral changes in the intensity, position, and bandwidth of the band are observed sensitively even at the portion of the tail band, these spectra can be applied for a powerful method in industrial analytical applications.
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