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Contradictions, inner

Iron(III)-catalyzed autoxidation of ascorbic acid has received considerably less attention than the comparable reactions with copper species. Anaerobic studies confirmed that Fe(III) can easily oxidize ascorbic acid to dehydroascorbic acid. Xu and Jordan reported two-stage kinetics for this system in the presence of an excess of the metal ion, and suggested the fast formation of iron(III) ascorbate complexes which undergo reversible electron transfer steps (21). However, Bansch and coworkers did not find spectral evidence for the formation of ascorbate complexes in excess ascorbic acid (22). On the basis of a combined pH, temperature and pressure dependence study these authors confirmed that the oxidation by Fe(H20)g+ proceeds via an outer-sphere mechanism, while the reaction with Fe(H20)50H2+ is substitution-controlled and follows an inner-sphere electron transfer path. To some extent, these results may contradict with the model proposed by Taqui Khan and Martell (6), because the oxidation by the metal ion may take place before the ternary oxygen complex is actually formed in Eq. (17). [Pg.408]

This last statement would seem to contradict what goes on in meditation, and the fascinating work of Charlotte Selver (1966) with sensory awareness. In meditation, however, one objectifies the inner world not by identifying with what one experiences, but merely by experiencing it as an experience. As soon as one identifies anything as an object of perception or conceptualization, it is excluded from the "I" system. We say "My elbow itches," not "I itch in the elbow." Selver s work seeks to bring self-awareness into relation with environmental awareness so that they function as a unified system. [Pg.295]

Of course, in Eq. (6) the contraction form factor p is valid only in the arm that is parallel to the velocity vector. Equation (6) was interpreted by Lorentz and Fitz-Gerald as a real contraction [17]. It is important to see that in Eq. (6) the hidden parameter p is only one possible solution for the contradiction, but the result of the M-M experiment allows numerous other solutions based on the inner properties and features of the light. The M-M experiment destroyed the world picture of classical physics, and it required a new physical system of paradigms. Thus, for example, the applicability of Galilean relativity principle was rendered invalid. [Pg.394]

However, several workers11 of good reputation still hold that the objections of Loschmidt and Zermelo reveal inner contradictions in the foundations even in the... [Pg.2]

It is interesting to note that Volk et al. are able to differentiate between the two enzyme activities by the lack of fluoride inhibition of PPase II, which is in contradiction with the results in [20]. Volk et al. also obtained, though careful differentiation of mitochondrial membranes, a localization of the PPases. They came to the conclusion that PPase I is localized in the mitochondrial matrix. PPase II is situated in the inner mitochondrial membrane, a localization in line with its proposed role as a coupling factor [71]. [Pg.194]

From the last formula we see that if (if, if) > 0, then (f, f) < 0, and vice versa, which contradicts axiom (A.36). Therefore, we have to introduce a different definition for the inner product of two vectors in the complex space. It is defined as a complexvalued functional, (f,g), with the properties... [Pg.547]

Mercurius consists of all conceivable opposites. He is thus quite obviously a duality, but is named a unity in spite of the fact that his innumerable inner contradictions can dramatically fly apart into an equal number of disparate and apparently independent figures. [Pg.47]

We have already seen, in the case of money, how value, having become independent as such - or the general form of wealth - is capable of no other motion than a quantitative one to increase itself. It is according to its concept the quintessence of all use values but, since it is always only a definite amount of money (here, capital), its quantitative limit is in contradiction with its qtialily. It is therefore inherent in its nature constantly to drive beyond its own barrier. .. Already for that reason, value which insists on itself as value preserves itself through increase and it preserves itself precisely only by constantly driving beyond its quantitative barrier, which contradicts its character as form, its inner generality. ... [Pg.39]

This apparent contradiction leads to the conclusion that a metal lattice is, in the normal ranges of temperature, filled with electrons in much the same way as, in the case of the heavier atoms, the inner energy levels are filled with their electrons this is why the cloud electrons are not normally affected by the relatively small energy increments associated with heating. In other words, in the metal lattice there are definite electron energy levels, which are just as fundamental, and from some points of view just as important, as the energy levels in atoms. This important idea will now be discussed in rather more detail. [Pg.116]

The above description is within the classical picture of atmospheric electricity, a group of hypotheses to explain the electrification of the atmosphere. It is probably fundamentally correct but certainly not complete it has not yet been confirmed by systems of measurements resulting in no inner contradictions. In particular, extraterrestrial influences must be permitted their general significance is stiU under debate. [Pg.2300]

Recently, Wolkin et al. observed an upper limit of the PL emission energy of 2.1 eV in oxidized porous silicon even if the nanocrystal size became smaller than 2 nm. This behavior, which seems to contradict quantum confinement, was explained in terms of the formation of stabilized electronic states on Si=0 bonds at the surface. For nanocrystals with diameters smaller than 2.8 nm, the widening of the band gap due to quantum confinement makes them appear as inner band gap states. Including the results of Wolkin et al. in our model calculations, we obtained nice agreement with the experimental data. " ... [Pg.304]


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See also in sourсe #XX -- [ Pg.130 ]




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