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Natural evolution definitions

Many characteristics of hyaluronan are wonderful inventions of evolution. Such an evolutional definition could obviously be attributed to other biopolymers such as proteins, nucleic acids and polysaccharides. Indeed, evolutional potential, mostly related to biopolymers, strongly depends on molecular physico-chemical nature [1]. HA is considered one of the earliest evolutional forms of the polysaccharide family. So, let s look at hyaluronan s biological role in comparison with the molecular evolutions of other biopolymers. [Pg.9]

Using the experimental values for the width of the traveling wave front (portion be, Fig. 8), let us estimate the propagation velocity for the case of a thermal mechanism based on the Arrhenius law of heat evolution from the known relationship U = a/d, where a 10"2 cm2/s is the thermal conductivity determined by the conventional technique. We obtain 5 x 10"2 and 3 x 10-2cm/s for 77 and 4.2 K, respectively, which are below the experimental values by about 1.5-2 orders of magnitude. This result is further definite evidence for the nonthermal nature of the propagation mechanism of a low-temperature reaction initiated by brittle fracture of the irradiated reactant sample. [Pg.354]

Frater Albertus had a simple definition of what alchemy is about. He said that alchemy was about Evolution and "Raising the Vibratory Rate." To understand that correctly requires some understanding of natural laws and some introduction to mysticism or occult philosophy. [Pg.8]

We here summarize the results of Bader et a/.118 which are concerned with the definition of molecular structure and with the extension of this concept, together with the associated concept of a bond, to the dynamic case. A precise description and physical interpretation of the making and breaking of chemical bonds is presented by these workers in a quantitative analysis of the evolution of molecular structure. The topological analysis of the dynamic system, as pointed out by Collard and Hall,119 falls naturally into the realm of an existing and elegant mathematical theory, the catastrophe theory of Thom.120... [Pg.159]


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See also in sourсe #XX -- [ Pg.3 ]




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