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Phenomenological Evidence

In the above dynamical scheme a crucial role is played by solitons, water electrets, and coherent electric waves. In this section we present some experimental findings which provide evidence for the existence of such collective modes in biological systems. [Pg.281]


Phenomenological evidence for the participation of ionic precursors in radiolytic product formation and the applicability of mass spectral information on fragmentation patterns and ion-molecule reactions to radiolysis conditions are reviewed. Specific application of the methods in the ethylene system indicates the formation of the primary ions, C2H4+, C2i/3+, and C2H2+, with yields of ca. 1.5, 1.0, and 0.8 ions/100 e.v., respectively. The primary ions form intermediate collision complexes with ethylene. Intermediates [C4iZ8 + ] and [CJH7 + ] are stable (<dissociation rate constants <107 sec.-1) and form C6 intermediates which dissociate rate constants <109 sec. l). The transmission coefficient for the third-order ion-molecule reactions appears to be less than 0.02, and such inefficient steps are held responsible for the absence of ionic polymerization. [Pg.249]

It is always dangerously easy to understand scientific facts after they have been established. We call this the power of the retrospectoscope. But this one really does make sense, especially as it fits so well with the phenomenological evidence. Still, we would like to know much, much more about these patients. Why, for example, does sleep thinking stop Why, also, does sleep emotion stop It should still be possible, certainly. [Pg.188]

The rheological properties of all HMHEC polymers are profoundly affected by the hydrophobe molar substitution (MS) and the hydrophobe chain length. For any given hydrophobic moiety, there is a threshold hydrophobe MS below which there are no significant associative interactions. The most common phenomenological evidence for associative behavior is a dramatic increase in the solution viscosity of HMHEC polymers as a function of hydrophobe MS. The solution viscosity of HMHEC polymers continues to increase as a function of hydrophobe MS until the maximum limit of solubility is reached, as which point the HMHEC polymer becomes insoluble in water.33... [Pg.31]

In conclusion, phenomenological evidence supports the main elements of our QFT approach. We feel that the task of getting a satisfactory dynamical description of living systems is not out of reach. [Pg.284]

In summary, phenomenological evidence suggests that an electron can exist in either of two spin states in the presence of a magnetic field. Writing wavefunctions including spin functions and comparing these with experimental facts indicates that states exist only for wavefunctions that satisfy the exclusion principle. [Pg.136]

While phenomenological evidence is strong that oxidative damage does occur in aging and in chronic degenerative diseases, cause-and-effect relationships have not been confirmed. [Pg.29]

The importance of the solid-liquid interface in a host of applications has led to extensive study over the past 50 years. Certainly, the study of the solid-liquid interface is no easier than that of the solid-gas interface, and all the complexities noted in Section VIM are present. The surface structural and spectroscopic techniques presented in Chapter VIII are not generally applicable to liquids (note, however. Ref. 1). There is, perforce, some retreat to phenomenology, empirical rules, and semiempirical models. The central importance of the Young equation is evident even in its modification to treat surface heterogeneity or roughness. ... [Pg.347]

One could assume that this characteristic behavior of the mobility of the polymers is also reflected by the typical relaxation times r of the driven chains. Indeed, in Fig. 28 we show the relaxation time T2, determined from the condition g2( Z2) = - g/3 in dependence on the field B evidently, while for B < B t2 is nearly constant (or rises very slowly), for B > Be it grows dramatically. This result, as well as the characteristic variation of with B (cf. Figs. 27(a-c)), may be explained, at least phenomenologically, if the motion of a polymer chain through the host matrix is considered as consisting of (i) nearly free drift from one obstacle to another, and (ii) a period of trapping, r, of the molecule at the next obstacle. If the mean distance between obstacles is denoted by ( and the time needed by the chain to travel this distance is /, then - (/ t + /), whereby from Eq. (57) / = /Vq — k T/ DqBN). This gives a somewhat better approximation for the drift velocity... [Pg.611]

It is also evident that this phenomenological approach to transport processes leads to the conclusion that fluids should behave in the fashion that we have called Newtonian, which does not account for the occurrence of non-Newtonian behavior, which is quite common. This is because the phenomenological laws inherently assume that the molecular transport coefficients depend only upon the thermodyamic state of the material (i.e., temperature, pressure, and density) but not upon its dynamic state, i.e., the state of stress or deformation. This assumption is not valid for fluids of complex structure, e.g., non-Newtonian fluids, as we shall illustrate in subsequent chapters. [Pg.8]


See other pages where Phenomenological Evidence is mentioned: [Pg.118]    [Pg.82]    [Pg.250]    [Pg.341]    [Pg.481]    [Pg.354]    [Pg.507]    [Pg.132]    [Pg.171]    [Pg.281]    [Pg.283]    [Pg.151]    [Pg.292]    [Pg.118]    [Pg.82]    [Pg.250]    [Pg.341]    [Pg.481]    [Pg.354]    [Pg.507]    [Pg.132]    [Pg.171]    [Pg.281]    [Pg.283]    [Pg.151]    [Pg.292]    [Pg.368]    [Pg.443]    [Pg.54]    [Pg.71]    [Pg.82]    [Pg.122]    [Pg.168]    [Pg.294]    [Pg.202]    [Pg.102]    [Pg.190]    [Pg.254]    [Pg.267]    [Pg.228]    [Pg.242]    [Pg.34]    [Pg.147]    [Pg.29]    [Pg.204]    [Pg.54]    [Pg.72]    [Pg.136]    [Pg.114]    [Pg.203]    [Pg.140]    [Pg.194]   


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Phenomenological

Phenomenology/phenomenologic

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