Fractions studies, lean

Results of Lean-Shale Studies. Because of the small fraction of organic carbon in the original sample and the correspondingly small amount of carbon in the residue, it is difficult to be sure of the significance of the differences in the amounts of residual carbon among the products of the runs. Certainly, qualitatively, there are many similarities to the results with the rich shale such as ... 

It was demonstrated in this study that Cu ions highly dispersed in matrices that are not active in propene combustion, such as ZrOj and Ga203, are active catalysts for propene reduction of NO to N2 in the lean condition. For the CU-Z1O2 catalysts, it was found that increasing the Cu content resulted in catalysts that were more active in both propene combustion and NO reduction. But the increase in propene combustion activity was faster than NO reduction, thus the resulting efficiency in NO removal decreased. EPR spectra and TPR profiles showed that catalysts with higher Cu contents contained larger fraction of Cu ion in clusters. 

A few workers have attempted to separate lean meat into its individual protein fractions. Turner et al. (1979) fractionated meat into salt-soluble protein (SSP), insoluble myofibrillar protein (IMP), and connective tissue protein (CTP) by centrifugation. Fat was also separated. Using this technique to fractionate minced pork shoulder, Knight (1988) studied the influence of the SSP, IMP, and CTP fractions, and the effect of fat on cooking losses in model systems. The interactions between the three fractions were also examined. The composition of the individual fractions prepared is shown in Table 2.6. 

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