Intensity disagreement factor

Figure 2. Experimental (—) and calculated ( ) X-ray diffraction profile for H-BOR-E, sample 10 (a) and 23 (b). The insets show a plot of the intensity disagreement factor (see Table II) vs. the fault probability parameter, p.

Sharma et in work described earlier, found the relative emission intensity of the reaction of O atoms with H2S to be 1.85 times greater than that for the reaction of O-fOCS. Using the value of determined by Sullivan and Warneck . they thus calculated a value of k = 1.02 x 10 l.mole . sec for the rate of that part of the reaction of O-I-H2S which leads to SO production. They stated that their value was a factor of 6 smaller than the result reported by Liuti et al. which they quote as being 6x 10 l.mole sec"S However, Liuti et al. obtained 1.2 X 10 l.mole sec for the overall rate coefficient, and since the chain reaction, which formed SO, accounted for 80 % of the reaction, the discrepancy between the two sets of workers is closer to a factor of ten. Sharma et al. suggest that the condition of the walls may account for the discrepancy if for some reason the disappearance of HS at the walls was greater in one of the experiments, then the production of SO would have been different, and so would the inferred rate coefficient for the overall reaction of O -I- H2S. At present, there does not seem to be any other explanation for the disagreement in the results. 

Structural refinement was carried out using an iterative procedure [12], in which the disagreement between experimental and calculated intensities, as measured by an R factor, is minimised as a function of the structural and non-structural variables. The R factor is a normalised function defined [17-19]... 

There was always an abyss of disagreement between the proponents and critics of laetrile regarding its usefulness, origin, chemical structure, mechanism of action, and therapeutic effects. " It was a source of intense national debate regarding freedom of choice in health care decisions, and the debate was guided more by sociological and political factors than medical. In the end, laetrile could not live up to the scientific scmtiny, and it was not approved for use in the U.S. 

Fig. 5. Structure factor S(k) for polyethylene melt (N — 6429) as a function of wavevector k at T = 430 K. The points are experimental results [32,33] of Narten and Habenschuss from X-ray scattering (the k a 0 data is inaccurate due to sample preparation related scattering). The soiid curve is the PRISM theory with the hard core diameter d = 3.90 A. Use of a value of d = 3.7 A results in roughly a 10% underestimate of the intensity rf the amorphous halo feature. Disagreement between experiment and theory at large k is eliminated if thermal broadening, due to vibrational and torsional oscillations, is taken into account [33,34]...

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