Results 241 to 250 of about 3,260,990 (309)

Resolution of absorption spectra

Computers & Chemistry, 1989
Abstract Absorption spectra are resolved on the basis of lognormal distribution. A procedure is described for resolving absorption spectra in terms of skewed bands.
José M. Sevilla, Manuel Dominguez, Francisco Garcia-Blanco, Manuel Blázquez   +3 more
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Absorption spectra of bone

Calcified Tissue Research, 1977
Absorption spectra of human bone and its two major constituents (collagen and apatite) were obtained in the wavelength region extending from 2000 to 12,000 A. In the last two cases a minimum transmission (maximum absorption) was uniformly observed in the ultraviolet region.
J, Behari, S K, Guha, P N, Agarwal
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Absorption Spectra of the Sodium Peruranates

Nature, 1950
IT was shown by Scott1 that the presence of bicarbonate in solutions of sodium peruranate, formed by the addition of excess hydrogen peroxide to sodium uranyl tricarbonate solution, caused errors in the absorptiometric determination of uranium. Smales and Furby2 found the optical density to be dependent on both the pH and the carbonate content of the ...
T V, ARDEN, P, McGLONE
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Absorption Spectra of the Ethyl Chlorophyllides

Nature, 1953
THE spectra of the ethyl chlorophyllides, the crystalline derivatives of chlorophyll by replacement of the phytyl by the ethyl radical, are of interest as these compounds are valuable as actinometry standards in the study of the efficiency of photosynthesis.
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Absorption Spectra of Aldehydes

Nature, 1934
1. RECENT observations of the ultra-violet absorption bands in the vapours of a series of homologous aldehydes have disclosed a vibrational structure, which is very similar throughout the series, since 35 measurements have given an average separation of 1025 cm.-1 in the spectra of the higher homologues, although this interval increases to 1053 cm.-1 ...
C. P. SNOW, E. EASTWOOD
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Absorption Spectra of Exciplexes

The Journal of Chemical Physics, 1971
Absorption spectra of the exciplexes of pyrene, anthracene, biphenyl, and naphthalene with diethylaniline (DEA) as a common electron donor are recorded by applying pulse laser photolysis. The numerous bands appearing in the spectra are analyzed and attributed to transitions from the emitting charge-transfer state, (A−D+), to higher excited charge ...
R. Potashnik, C. R. Goldschmidt, M. Ottolenghi, A. Weller   +3 more
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Intensification of Absorption Spectra

Nature, 1963
Keilin and Hartree1 have described the sharpening and intensification of absorption spectra of haem compounds which occurred on making the observation at liquid air temperature. They observed that the intensification was due to light scattering by the ice crystals and could be duplicated by placing the cytochrome in a kaolin suspension.
W. B. ELLIOTT, G. F. DOEBBLER
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[Fluorescence spectra and absorption spectra of carvacrol].

Guang pu xue yu guang pu fen xi = Guang pu, 2015
Fluorescence spectra and absorption spectra of carvacrol, an active component of Chinese herbal medicines, have been studied. The ionization constant and fluorescence quantum yield of carvacrol were measured according to spectral data. Under the condition of pH < 2.0, fluorescence intensity of carvacrol increases with the increase in pH value.
Li-Ran, Li, Cui-Ge, Liu, Yong-Ju, Wei
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The Absorption Spectra of the Aminopyridines

Journal of the American Chemical Society, 1949
L C, ANDERSON, N V, SEEGER
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Ab Initio Calculation of Vibrational Absorption and Circular Dichroism Spectra Using Density Functional Force Fields

, 1994
P. Stephens, F. Devlin, C. Chabalowski, M. Frisch   +3 more
semanticscholar   +1 more source