Perfect nuclear following

The CH stretching VCD in these six-membered ring molecules is fairly conservative, and the spectra are adequately explained by VCD mechanisms in which electronic motion perfectly follows nuclear motion ( nuclear following mechanisms ). 

The fixed partial charge (FPC) model (35) assumes that the electrons follow the nuclear motion perfectly and serve merely to screen the nuclear charge. The dipole moment derivative contribution from each nucleus is (5R /9Ga)o where... 

The measurements of mass defects carried out with very great accuracy by Aston (since 1920) supply information, therefore, on the heats of formation of nuclei, i.e. on the energy relations in nuclear construction. These are found to follow certain perfectly definite rules. It has proved to be convenient to divide up the various nuclei into four groups,... 

The nuclear engineering experience is not perfect, of course, but real strides have been made since the TMI wakeup call, which luckily occurred without major human losses. To their credit, an improvement and learning effort was initiated and has continued. High-profile incidents like TMI are rare, but smaller scale self-analyses and problem-solving efforts follow detection of small defects, near misses, and precursors and negative trends. Occasionally the NRC has stepped in and required changes. For example, in 1996 the NRC ordered the Millstone nuclear power plant in Connecticut to remain closed until management could demonstrate a safety conscious work environment after identified problems were allowed to continue without remedial action [34]. 

So finally, a perfect knowledge of gas-liquid mass transfer data theoretically necessitates simultaneous measurements of mass transfer parameters by two ways local physical measurement of a, kj and ki a and global chemical or physical measurement of a, kL and kLa to follow the variation in situ of the mass transfer parameter. It seems important to remark that the techniques exist now and that the next years will provide fruitful data on that topic including nuclear engineering (35). 

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