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Interaction, laws

An analysis of the calculated values of AW shows that the damping factor in the indirect interaction is dr1, as exemplified in Fig. 8.8, for Cr and Ti substrates and 77 = 1.667. Envelope curves of the form ad x are shown, where a is chosen, so that the curve passes through the data point corresponding to d = 4. The fit to d 1 is seen to improve as d increases, agreeing with the asymptotic nature of the interaction law. [Pg.159]

Inputting solid particles at fixed positions, of different sizes simulates a solid phase in the fluid lattice (Fig. 4). The number of fluid particles per node and their interaction law (collisions) affect the physical properties of real fluid such as viscosity. Particle movements are divided into the so called propagation step (spatial shift) and collisions. Not all particles take part in the collisions. It strongly depends on their current positions on the lattice in a certain LGA time step. In order to avoid an additional spurious conservation law [13], a minimum of two- and three-body collisions (FHP1 rule) is necessary to conserve mass and momentum along each lattice line. Collision rules FHP2 (22 collisions) and FHP5 (12 collisions) have been used for most of the previous analyses [1],[2],[14], since the reproduction of moisture flow in capillaries, in comparison to the results from NMR tests [3], is then the most realistic. [Pg.104]

In chemistry we, therefore, have as fundamentals, on the one hand, the interaction law of Coulomb, on the other hand, the wave mechanical description of the behaviour of electrons. There can be no doubt about the complete correctness of both, again for the domain of chemistry (corrections resulting from the theory of relativity play no part). We have in fact only to consider in this case the time-independent description of this behaviour of the electrons, a restriction therefore to stationary states this approximation is permissible even with chemical reactions. [Pg.18]

Nevertheless only the classical Coulomb law appears as the interaction law the special feature of the atomic bond thus does not depend on a special non-classical interaction but on the particular wave-mechanical behaviour of the electrons, so that in the symmetrical solution a piling up of negative charge can be produced at a place where the potential energy for the electrons is low. In the individual configuration H>H the repulsion of the two nuclei predominates, as can be seen from Fig. 13 K, over the attraction of the one proton for the cloud of negative charge around the other proton, at all distances. [Pg.131]

All parts of the physical sciences are now served by calculation techniques that would not have been possible without the speed of electronic computers. Such approaches are creative in the sense that, given the law of the energy of interaction between the particles, the software allows one to predict experimental quantities. If agreement with experiment is obtained, it tells us that the energy of interaction law assumed is correct. Sometimes this approach can be used to calculate properties that are difficult to determine experimentally. Such calculations may allow increased insight into what is really happening in the system concerned or they may be used simply as rapid methods of obtaining the numerical value of a quantity. There are two main computational approaches and these will be discussed next. [Pg.319]

We give, in Table I., a list of theoretical values for the attractive constant c [i.e. the factor of — i /i in the above interaction law) for rare gases and some other simple gases where the refractive index can fairly well be represented by a dispersion formula of one term only. The characteristic frequency vj) multiplied by h is in all these cases very nearly equal to the ionisation energy hvj. This may, to a first approximation, justify using the latter quantity in similar cases where a dispersion formula has not yet been determined. It is seen that the values of... [Pg.10]

We now have to find the diameter of the molecules, D, in terms of the interaction law. The diameter can be defined roughly as the distance apart of a pair of molecules at which e(r) is zero. We find therefore... [Pg.172]

In this section we consider the application of the concept of ion association to describe the properties of electrolyte solutions within the ion or McMillan-Mayer level approach. In this approach the effects of solvent molecules are taken into account by introducing the dielectric constant into Coulomb interaction law and by appropriately choosing the short-range part of ion-ion interactions. To simplify, we consider here the restrictive primitive model (RPM)... [Pg.47]

Csanady, G. T, 2001. Air-Sea Interaction Laws and Mechanisms. Cambridge University Press, Cambridge, U. K. [Pg.619]

This form of the interaction law is called the Lennard-Jones potential. In practice the law is most easily handled if n = 12 it is then called a 6-12 potential. The shape of the Lennard-Jones potential is shown in Fig. 26.6(b). [Pg.673]

Lacker, H.M. 1981. The regulation of ovulation number in mammals An interaction law which controls follicle maturation. Biophys. J. 35 433-54. [Pg.558]

Here, a is the distance between the center of the adsorbed charged species and the metal surface. Equation (86) predicts a rapid decrease of the interaction energy as a function of the distance between adsorbed ions, R, and it means that the ensemble of species with such interaction law should correspond to the one with short-range interactions. The uncertain point within this approach is to choose the value of the dielectric constant of the medium in Eq. (86), s. [Pg.102]

The idealization of the two coupled crystalline and amorphous components of HDPE as joined sandwich elements and their interactive plastic deformation by crystal plasticity and amorphous flow comes close to the assumptions of the Sachs model of interaction. Thus, the composite model employing a Sachs-type interaction law does indeed result in quite satisfactory predictions both for the stress-strain curve and for the texture development in plane-strain compression flow and even in other modes of deformation (Lee et al. 1993b). In the following sections we discuss the application of the composite model to plane-strain compression flow and compare the findings of the model with results from corresponding experiments. [Pg.316]

The authors find very rapid convergence of (5.42). Model calculations indicated agreement with the exact formula to 2 percent. Many aerosols such as chain agglomerates and fibers may be viewed, to a first approximation, as cylinders. Interactions between parallel cylinders have been studied by LANGBEIN [5.96] who found interaction laws between those for interacting spheres and interacting half-spaces for nonretarded and presumably, therefore, for retarded cases. For separations respectively small and large with respect to ... [Pg.150]

In other studies of a broader scope, Loutfy and Law (15,16) reported on the spectroscopy of fluorescence probes in polymeric matrices and on their intramolecular charge-transfer (ICT) interactions. Law (17) also proposed application of the viscosity-dependent fluorescence dyes as sensitive probes for measuring polarity, microviscosity, and structural changes in a micro- environment. More recently, Loutfy and Teegarden (18) have exploited the unique properties of julolidinemalononitr ile (a "molecular rotor" probe with viscosity-dependent fluorescence) for determination of polymer chain tacticity. [Pg.247]

Thus an alternative form of the equation of state for a system with a general interaction law, equivalent to (35) for a hard-core system, is... [Pg.13]

It can be seen that ascertain of rate equation of reverse reaction is impossible for a complex multi-step catalytic reactions by only rel3dng on mass interaction law which is only true for elementary step. In addition, the exact K and Q values are necessary. [Pg.113]


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See also in sourсe #XX -- [ Pg.73 ]




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