Apparent molecular equivalent weight

Evidently, the titratable functions of M are two very strong bases, since the equivalent weight of M calculated from the curve was 391, corresponding to approximately half the molecular weight (791) calculated from the analyses discussed above. Apparently, one of the functions was due to the guanidino group of the isolated... 

Experimental Results. Effects of pH and Ionic Strength. Experiments showing the effects of pH and ionic strength on the configuration of NOM in solution are presented in Figure 3, taken from the work of Cornel et al. (14). Experiments were conducted with the 50-100 K apparent molecular weight fraction of a humic acid (HA). Results are expressed in terms of the equivalent Stokes-Einstein or hydrodynamic radius (rh) calculated from measurements of the diffusion coefficients of the HA fraction. 

Figure 10 Apparent molecular weight Mapp as a function of the concentration c of giant surfactant micelles of sodium sulfbpropyl octadecyl maleate in brine, obtained by means of light scattering at a temperature of 323 K. Triangles experimental data of Berlepsch and coworkers [54], Line theory for self-assembled rigid rods fitted to the data [55]. The link free energy obtained from the fit amounts to G 26 Ab T, which is equivalent to about 65 kJ mor. The micelles have an estimated persistence length of 120 nm and a diameter of 6 nm. Also indicated by the dashed lines are the predictions of mean-field theory in the dilute and semidilute regimes [56].

From Figure 2, it is clear that the apparent average molecular weight of the polymer increases progressively as soon as 25% Ca2+ equivalents are added and, at the same time, the intrinsic viscosity of the samples increased (Figure 3). The fraction of carboxylic groups bound with Ca2+ agrees with the value found in the discussion on the role of a. ... 

A sheep blastocyst library was screened with a probe based on the N-terminal sequence of the IFN-T protein and the cDNA obtained (Table 3). Surprisingly, it exhibited 45-55% homology with various IFNs from human, mouse, rat, and pig and 70% homology with bovine IFN-co [12]. It shared both molecular weight (19 kDa) and pi (5.4-5.6) with IFN-as, while its length, 172 amino acids, was equivalent to the IFN-cos. In competition studies, IFN-T was found to compete with IFNs a, (3, and for binding to the Type IIFN receptor [13]. In contrast, IFN-T exhibited several unique properties such as its reproductive function, its poor inducibility by virus, and its apparent reduced cytotoxicity. Thus, IFN- conceptus protein appears to be a novel IFN. 

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