Ewing

SinceR" = Ewe must have c = 1 in (equation A1.4.64), which gives... 

Ewing G E 1980 Vibrational predissociation in hydrogen-bonded complexes J. Cham. Phys. 72 2096-107... 

The anisotropy of the product rotational state distribution, or the polarization of the rotational angular momentum, is most conveniently parametrized tluough multipole moments of the distribution [45]. Odd multipoles, such as the dipole, describe the orientation of the angidar momentum /, i.e. which way the tips of the / vectors preferentially point. Even multipoles, such as the quadnipole, describe the aligmnent of /, i.e. the spatial distribution of the / vectors, regarded as a collection of double-headed arrows. Orr-Ewing and Zare [47] have discussed in detail the measurement of orientation and aligmnent in products of chemical reactions and what can be learned about the reaction dynamics from these measurements. 

Grr-Ewing A J and Zare R N 1995 Orientation and alignment of the products of bimolecular reactions The Chemicai Dynamics and Kinetics of Smaii Radicais vol 2, ed K Liu and A Wagner (Singapore World Scientific) pp 936-1063... 

Shafer N E, Orr-Ewing A J, Simpson W R, Xu H and Zare R N 1993 State-to-state differential cross sections from photoinitiated bulk reactions Chem. Phys. Lett. 212 155-162... 

Anex D S and Ewing G E 1986 Transfer and storage of vibrational energy in liquids oollisional up-pumping of oarbon monoxide in liquid argon J. Phys. Chem. 90 1604-10... 

Chang H-C and Ewing G E 1990 Infrared fluoresoenoe from a monolayer of CO on NaCI(IOO) Phys. Rev. Lett. 65 2125-8... 

A spcctruphoLornetric problem in simultaneous analysis (Ewing, 198.2) is taken from the original research of Weissler (194.2), who reaeted hydrogen peroxide with Mo, Ti, and V ions in the same solution to produce corn pounds that absorb light strongly in overlapping peaks with absorbances at. 320. 410. and 460 nrn, respectively as sliown in (Fig, 2-3),... 

Simultaneous Cr O " and MnOj" detemiination (Ewing, 1985) is a multivariate spectrophotometric analysis that requires detemiination of a matrix of four calibration constants, one for each unknown at each of two wavelengths. 

Ewing, G. W., 1985. Instrumental Methods of Chemical Analysis. McGraw-Hill, New York. 

Laitinen, H. A. Ewing, G. (eds). A History of Analytical Chemistry. The Division of Analytical Chemistry of the American Chemical Society Washington, D.C., 1972. McLafferty, E. W. Analytical Chemistry Historic and Modern, Acc. Chem. Res. 1990, 23, 63-64. 

Vassos, B. H. Ewing, G. W. Electroanalytical Chemistry. Wiley-Interscience New York, 1983. 

Figure 9.38 Cavity ring-down absorption spectrum of the 0-0 band of the a Ag-X Z system of O2, where k is the reciprocal of the ring-down time. (Reproduced, with permission, from Newman, S. M., Lane, I. C., Orr-Ewing, A. J., Newnham, D. A. and Ballard, J., J. Chem. Phys., 110, 10749, 1999)...

The same principle has been appHed to other mammals, particularly ewes and goats, as well as dairy cows (Table 22 Table 22. Use of Milk-Producing Animals for Biotechnology... 

In 1956 selenium was identified (123) as an essential micronutrient iu nutrition. In conjunction with vitamin E, selenium is effective iu the prevention of muscular dystrophy iu animals. Sodium selenite is adrninistered to prevent exudative diathesis iu chicks, a condition iu which fluid leaks out of the tissues white muscle disease iu sheep and infertility iu ewes (see Eeed ADDITIVES). Selenium lessens the iacidence of pneumonia iu lambs and of premature, weak, and stillborn calves controls hepatosis dietetica iu pigs and decreases muscular inflammation iu horses. White muscle disease, widespread iu sheep and cattle of the selenium-deficient areas of New Zealand and the United States, is insignificant iu high selenium soil areas. The supplementation of animal feeds with selenium was approved by the U.S. EDA iu 1974 (see Eeed additives). Much of selenium s metaboHc activity results from its involvement iu the selenoproteia enzyme, glutathione peroxidase. 

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