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Groups distinct

NO Reactions. The most informative derivitization reaction of oxidized polyolefins that we have found for product identification is that with NO. The details of NO reactions with alcohols and hydroperoxides to give nitrites and nitrates respectively have been reported previously, and only the salient features are discussed here (23). The IR absorption bands of primary, secondary and tertiary nitrites and nitrates are shown in Table I. After NO treatment, y-oxidized LLDPE shows a sharp sym.-nitrate stretch at 1276 cm-1 and an antisym. stretch at 1631 cm-1 (Fig. 1), consistent with the IR spectra of model secondary nitrates. Only a small secondary or primary nitrite peak was formed at 778 cm-1. NO treatment of y-oxidized LLDPE which had been treated by iodometry (all -OOH converted to -OH) showed strong secondary nitrite absorptions, but only traces of primary nitrite, from primary alcohol groups (distinctive 1657 cm-1 absorption). However, primary products were more prominent in LLDPE after photo-oxidation. [Pg.383]

A comparison between Tu s pyridine bridged C,N,C pincer carbene ligand and the lutidine bridged one from Hahn s group distinctly favours the more rigid Tu ligand over the conformationally flexible Hahn system. [Pg.179]

Molecular Crystals. The only building stone of a copper crystal is the copper atom in this crystal there do not exist any discrete groups (distinct groups) of atoms smaller than the crystal specimen itself. On... [Pg.40]

Compared to patients treated by hemodialysis, data on trace element accumulation/ deficiency in CAPD are rather scanty and less documented. In CAPD the total volume of dialysis fluid patients get in contact with during treatment is much lower. Hence, the potential amount of trace metals that can be exchanged during treatment is much less than in hemodialysis. Therefore, CAPD patients must be considered at a lower risk for trace element accumulation/ toxicity as compared to hemodialysis a statement which is also reflected by the data presented of Padovese et al. [21] comparing the estimated exposure of forty-four trace elements in both patient groups. Distinct differences have been noted in the trace metal content between CAPD and hemodialysis fluids. Also the trace metal content of CAPD fluids may greatly differ between each other, which has been ascribed to the wide range of trace... [Pg.886]

Intuitively, a mediated schema is consistent with a source only if it does not group distinct attributes in the source (and hence distinct real-world concepts) into a single cluster. Algorithm 2 shows how to use the notion of consistency to assign probabilities on the p-med-schema. [Pg.104]

Using a competition hybridisation test, however, Eobson al. (32) have found sequence homologies of 60 to 70% between types 0, A, C and Asia 1 These viruses form a group distinct from the SAT serotypes because the homology between the two groups is 25 to 40% Homology between the individual SAT serotypes is also 60 - 70%... [Pg.65]

The uranyl vanadates form mineral groups distinct from the phosphates and arsenates because of the markedly different chemistry of the vanadium ion. Like uranium, vanadium shows several valence states in nature, and its detailed mineralogy is very complex. The crystal chemistry of vanadium was reviewed by Evans.In its lower valence states it forms distinct vanadium minerals, but in its higher valence state 5-1- it com-... [Pg.58]


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See also in sourсe #XX -- [ Pg.36 ]




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