Results 11 to 20 of about 426,299 (315)
Frontiers in Marine Science, 2023 The ultraviolet absorption spectra of chromophoric dissolved organic matter (CDOM) can be used to trace its sources and to explore the dynamic of the CDOM pool.
Aobo Ju +3 more
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Modeling of alkynes: synthesis and theoretical properties
Materials Research, 2003 In this paper we present the synthesis and simulation of alkynes derivatives. Semiempirical calculations were carried out for the ground and first excited states, including the spectroscopic properties of the absorption and emission (fluorescence and ...
Renato Rosseto +2 more
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Absorption spectroscopy of carbon and sulfur chains in 6 K neon matrices [PDF]
, 2008 Matrix isolation is challenged by a variety of laser-based techniques, which, in the gas phase, have demonstrated their ability to obtain high-resolution vibrational and electronic spectra of transient molecules, free of possible perturbation by the ...
Shnitko, Ivan G.
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Data in Brief, 2018 In this data article, the normalized emission and excitation spectra, the ultraviolet-visible (UV–vis) absorption spectra, and the X-ray photoelectron spectroscopy (XPS) of bulk-powders and nano-structured graphitic C3N4 (g-C3N4) were presented, which ...
Liangrui He +11 more
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Estimation of flattening coefficient for absorption and circular dichroism using simulation [PDF]
, 2009 The absorbance and circular dichroism (CD) of suspensions is lower than if the same amount of chromophore were uniformly distributed throughout the medium. Several mathematical treatments of this absorption flattening phenomenon have been presented using
Halling, P.J., Halling, Peter J.
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A broadband optical cavity spectrometer for measuring weak near-ultraviolet absorption spectra of gases [PDF]
Atmospheric Measurement Techniques, 2011 Accurate absorption spectra of gases in the near–ultraviolet (300 to 400 nm) are essential in atmospheric observations and laboratory studies. This paper describes a novel incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) instrument ...
J. Chen, D. S. Venables
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Equilibria and Absorption Spectra of Tryptophanase
Journal of Biological Chemistry, 1991 Tryptophanase (tryptophan: indole-lyase) from Escherichia coli has been isolated in the holoenzyme form and its absorption spectra and acid-base chemistry have been reevaluated. Apoenzyme has been prepared by dialysis against sodium phosphate and L-alanine and molar absorptivities of the coenzyme bands have been estimated by readdition of pyridoxal 5 ...
C M, Metzler, R, Viswanath, D E, Metzler
openaire +2 more sources
A new method of studying the relation between ionization rates and radio-wave absorption in polar-cap absorption events [PDF]
, 2005 International audienceDuring polar-cap absorption events, which are caused by the incidence of energetic solar protons, the high-latitude ionospheric D region is extended down to relatively low altitudes. While the incoming proton fluxes may be monitored
Hargreaves, J. K., J. K. Hargreaves
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Evaluating the New Automatic Method for the Analysis of Absorption Spectra Using Synthetic Spectra
Universe, 2017 We recently presented a new “artificial intelligence” method for the analysis of high-resolution absorption spectra (Bainbridge and Webb, Mon. Not. R. Astron. Soc. 2017, doi:10.1093/mnras/stx179).
Matthew B. Bainbridge, John K. Webb
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Dangerous Bonds Individual of Hydrogenated Amorphous Silicon and Defect Absorption Spectra
East European Journal of Physics, 2023 In this work, defect absorption spectra for defects characteristic of hydrogenated amorphous silicon are theoretically studied. It is shown that in order to determine defect absorption spectra using the Kubo-Greenwood formula, the indefinite integral in
Rustamjon G. Ikramov +5 more
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