This is because on one hand, heav wave is weaker and on the other hand, photoelastic testing method is unfavorable for observing the sound field of axial symmetry. The sound field (see Fig.4) excited by strip ciystal in solid is observed with photoelastic testing method. The wavefront of head wave can be see in Fig.4, which is a circumstantial evidence of wavefront of head wave excited just by point-shape crystal. We can calculate... [Pg.808]

LS. In the LS phase the molecules are oriented normal to the surface in a hexagonal unit cell. It is identified with the hexatic smectic BH phase. Chains can rotate and have axial symmetry due to their lack of tilt. Cai and Rice developed a density functional model for the tilting transition between the L2 and LS phases [202]. Calculations with this model show that amphiphile-surface interactions play an important role in determining the tilt their conclusions support the lack of tilt found in fluorinated amphiphiles [203]. [Pg.134]

If the field gradient has no axial symmetry, then a more complicated expression is found, involving an asymmetry parameter which is often moderate. In particular, the study of this parameter has been useful for the determination of resonance structures and for the understanding of the bonding in solid iodine. The contribution of each of the molecular electrons to q is given by a relation of the form... [Pg.189]

vertical flow, axial symmetry exists and flow patterns tend to be somewhat more stable. However, with slug flow in particular, oscillations in the flow can occur as a result of sudden changes in pressure as liquid slugs are discharged from the end of the pipe. [Pg.185]

The flow behaviour of suspensions of coarse particles is completely different in horizontal and vertical pipes. In horizontal flow, the concentration of particles increases towards the bottom of the pipe, the degree of non-uniformity increasing as the velocity of flow is decreased. In vertical transport, however, axial symmetry is maintained with the solids evenly distributed over the cross-section. The two cases are therefore considered separately. [Pg.198]

It is noteworthy that dq(e,t) does not satisfy this relation, as equality [J,x, dq] = 2 C q dq+ll (the definition of an irreducible tensor operator) does not hold for it [23]. Integration in (7.18), performed over the spherical angles of vector e, may be completed up to an integral over the full rotational group due to the axial symmetry of the Hamiltonian relative to the field. This, together with (7.19), yields... [Pg.232]

Our attention was attracted to the considerable deviation from axial symmetry of the Powell orbital through our application of a theorem about the values of the function along the principal axes. This theorem is that for any d orbital the sum of the squares of the values along the six principal directions is equal to 15. (In our discussion all functions are normalized to 4ir.) This theorem is proved in the following way. Hultgren6 has shown that the most general d orbital, D, can be written as a linear combination of df and dx2-... [Pg.241]

A bounded solution of problem (56)-(58) possesses the same properties as in the case of the axial symmetry (for more detail see problem (26)-(28)). [Pg.196]

A model that employs a two-dimensional cylindrical coordinate system and assumes axial symmetry with respect to r- and z-axes is developed. Figure 3.2.2 shows the coordinate system, computing region, and... [Pg.26]

All a bonds have high electron density concentrated along the intemuclear axis and axial symmetry, so their end-on profiles are circles. ... [Pg.680]

One more feature of the field behavior is worth noting. Inasmuch as the layer has infinite extension in horizontal planes, the distribution of masses possesses axial symmetry with respect to any line parallel to the z-axis that passes through the observation point. For this reason, it is always possible to find two elementary masses such that the tangential component of the field caused by them is equal to zero. Respectively, the field due to all masses of the layer has only a normal component gz. [Pg.52]

Now we introduce two moments of inertia one of them, A, around an arbitrary axis in the equatorial plane and the other, C, around the rotation axis, and taking into account the axial symmetry ... [Pg.109]

The quadrupole interaction becomes more sophisticated when the EFG lacks axial symmetry, p 0, because the shift operators connected to p introduce... [Pg.93]

The interactions in the x, y plane were slightly averaged to axial symmetry... [Pg.185]

The first step in the solution of equation (10.28b) is to hold the two nuclei fixed in space, so that the operator drops out. Equation (10.28b) then takes the form of (10.6). Since the diatomic molecule has axial symmetry, the eigenfunctions and eigenvalues of He in equation (10.6) depend only on the fixed value R of the intemuclear distance, so that we may write them as tpKiy, K) and Sk(R). If equation (10.6) is solved repeatedly to obtain the ground-state energy eo(K) for many values of the parameter R, then a curve of the general form... [Pg.271]

P2t Z = 2 DX = 1.34 R = 0.043 for 2,270 intensities. The carbon chain of the D-mannitol is bent, with C-2 - C-3 - C-4 - C-5 = —11°. The cinna-mate carbon-chains are extended. The two fused, 1,3-dioxane rings have very similar, chair conformations, with Q = 54, 55 pm, 8 = 170, 173°. There is a pseudo-2-fold, axial symmetry through the midpoint of the D-mannitol residue. [Pg.260]

Cyanide binds to a series of Ni complexes with N302 chelate ligands, and EPR spectra of the adducts indicate quasi-axial symmetry with a g pattern typical of low-spin, six-coordinate complexes with axial elongation and with a 2Ay ground state. No direct spin interaction of the unpaired electron with the carbon atom of the cyanide takes place.70... [Pg.252]

Sweeney, W. V., D. Coucouvanis et al. (1973). ESR of spin 5/2 systems with axial symmetry and moderately large zero-field splittings. Application of line-shape calculations to the interpretation of randomly oriented microcrystallite spectra. J. Chem. Phys. 59 369-379. [Pg.188]

The penetrating power of a shaped charge is approximately proportional to the cube of its diameter, but also very dependent on maintenance of exact axial symmetry during construction. It is also proportional to the detonation pressure of the explosive used, so that suitable fillings are cast Pentolite or RDX/TNT. Well-known applications of shaped charges are in the British PIAT and American bazooka. [Pg.159]

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