Analysis of the 2nu1 + nu2 + 2nu3 Band of Ozone

The 2nu1 + nu2 + 2nu3 band of ozone, occurring in the 4780 cm-1 region, has been observed for the first time, using a Fourier transform spectrometer, at 0.008 cm-1 resolution and using a large path length pressure product. Assignments of vibration-rotational transitions have been made up to J = 48 and Ka = 9. As a few levels with Ka = 1 or 2 are perturbed, it has been necessary to take into account the Coriolis resonance between the (212) and (141) vibrational states. With the effective Hamiltonian explicitly accounting for the interaction between these two states, the fit on 165 energy levels leads to the rms deviation of 1.9 x 10(-3) cm-1, which is near the experimental accuracy. Line intensities of the 2nu1 + nu2 + 2nu3 band have been measured and calculated. The set of spectroscopic parameters for interacting bands, as well as transition moment constants, is given. A complete list of line positions and intensities, with a cutoff of 1 x 10(-26) cm-1/molecule.cm-2 at 296 K up to J = 65 and Ka = 15, has been generated, which leads to the integrated band intensity Sv (2nu1 + nu2 + 2nu3) = (5.1 +/- 2.0) x 10(-23) cm-1/molecule.cm-2. Copyright 1997Academic Press

Diode laser spectrum and rovibrational analysis of the ν6 band of vinyl fluoride

The vibration–rotation spectrum of CH2=CHF has been investigated in the ν6 band region around 1305 cm−1 at Doppler limited resolution using a tunable diode laser spectrometer. The measurements have been performed at low temperature (240 K) to decrease hot band interferences. This fundamental of symmetry species A′ gives rise to an a/b hybrid band, which was mainly composed of a-type transitions. Both J and K structures have been resolved in the QQK(J) subbranches and the rovibrational analysis in the P, Q, and R branches has led to the identification of more than 1000 lines with J ≤ 43 and Ka ≤ 14. The ν6 band is affected by first-order b-type and second-order a-type Coriolis resonances with the ν9 + νn combination, and the perturbation effect has been found stronger for the [Formula: see text]level. About 870 transitions free of major resonance contributions were fitted using Watson's A-reduction Hamiltonian in the Ir representation, and a set of effective rotational and quartic centrifugal distortion constants was determined for the ν6 = 1 state of CH2=CHF.

[Clinico-functional evaluation of flunisolide + salbutamol combination (VAL 679/A) vs salbutamol in pediatric patients]

To establish the effectiveness of flunisolide + salbutamol vs salbutamol alone administered by metered aerosol in the phlogistic obstructive diseases, 18 children were evaluated. The treatments were evaluated on the basis of ventilatory function parameters and of tolerance. The results proved positive for all drugs, though the combination flunisolide + salbutamol produced a greater ventilatory and clinical effect.