Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Intensity multiplicity

Singh et al [54] used a 13C NMR spectrometric method and reported the chemical shifts of primaquine and chloroquine. The signals are assigned on the basis of substituent effects on benzene shifts, intensities, multiplicities in single-frequency off-resonance decoupled and the comparison with structurally related compounds. [Pg.183]

As is well known, the usefulness of NMR in chemistry in general, and in heterogeneous catalysis in particular, rests on the fact that the chemical shifts, intensities, multiplicities, and widths of the magnetic resonance lines of nuclei depend in a sensitive manner on the chemical environment of the nuclei. The precise value of B, the magnetic field which the nucleus experiences, seldom, if ever, equals the applied magnetic field (B = B0 + B,oc where the two terms on... [Pg.200]

With optically dense dispersions such as occur in plate columns, the transmission method may fail because of intense multiple scattering. In such cases a reflectivity probe may be used (C5), where the optical reflectivity or backward scattered light from the dispersion is measured. The specific interfacial area is calculated by... [Pg.38]

Protons at Carbon Chemical Shift (ppm) Intensity Multiplicity ... [Pg.133]

K. Palo, U. Mets, S. Jager, P. Kask, K. Gall, Fluorescence intensity multiple distribution analysis concurrent determination of diffusion times and molecular brightness, Biophys. J. 79, 2858-2866 (2000)... [Pg.376]

Mills 2-roll mill Versatile, labor intensive, multiple passes required. Produces a sheet/strip which must be chopped/cubed. [Pg.412]

It is important to note that, to increase signal intensity, multiple lanthanide labeling of even small molecules is possible because lanthanide luminescence, in contrast to organic dye fluorescence, [15] does not undergo cmicentratimi quenching. This can be attributed to the lack of overlap between the absorption and excitation spectra due to the large Stokes shift. [Pg.51]

Palo, K, Metz, U, Jager, S, Kask, P, and Gall, K, Fluorescence intensity multiple distributions analysis Concurrent determination of diffusion times and molecular brightness. Biophysical Journal 79 (2000) 2858 2866. [Pg.90]

Develop the film and vaiy the timing of the second exposure according to the signal intensity. Multiple exposures may be taken at a variety of time points (2 sec-1 h) to obtain the optimiun signal, as the ECL signal persists for over 1 h. [Pg.281]

Chemical shift/S Relative intensity Multiplicity Coupling constants/Hz... [Pg.276]

Multiple hole creation may result from direct excitation or from Auger and Coster-Kronig processes (see [2]). Under ion bombardment direct ionization to the target continuum of states can compete with electron capture by the projectile. It is known, that X-ray spectra excited by heavy ions may show intense multiple emissions whose energies correspond to electron- or photon-excited satellites. A great number of experiments and theoretical calculations then refer to one-electron transition in multi-ionized atoms [4]. [Pg.237]


See other pages where Intensity multiplicity is mentioned: [Pg.1531]    [Pg.2]    [Pg.163]    [Pg.51]    [Pg.5]    [Pg.75]    [Pg.226]    [Pg.179]    [Pg.411]    [Pg.411]    [Pg.412]    [Pg.427]    [Pg.429]    [Pg.430]    [Pg.396]    [Pg.1531]    [Pg.151]    [Pg.4700]    [Pg.169]    [Pg.189]    [Pg.277]    [Pg.332]    [Pg.65]    [Pg.74]    [Pg.101]    [Pg.127]    [Pg.363]    [Pg.816]   
See also in sourсe #XX -- [ Pg.29 ]




SEARCH



Multiple Scattering and Dynamical Intensities

Multiplicity and relative intensities

© 2024 chempedia.info