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Deformation types

The upper part of Fig. 26 (see p. 114/115) contains several examples of localized 7r orbitals of pure type 7t 2, the prototype being naphthalene. It is seen that, even in fairly asymmetric molecular situations, the localized orbitals are still of quite pure type 7r 2. Really strong asymmetry is seen in the two molecules at the bottom of the figure, which show orbitals of the type 7r 22. The type 7t 2 would result from type ir 2 if all the contours from the right side of the orbital were pushed over to the left side. On the last figure (see Fig. 27,p. 116/117), there are further examples of pure and deformed type 7r 2. It can be seen that in sufficiently asymmetric molecular situations this type of orbital, which extends over four minor atoms, can have quite irregular forms. [Pg.61]

Figure 3-1. (/I), (B) Phenotypic characteristics of osteogenesis imperfecta (Of) (A) OI type IV and (B) OI type III. (C), (D) Radiographs of the long bones of the lower limbs (C) patient 1 with type IV OI and (D) patient 2 with the deforming type III OI. Figure 3-1. (/I), (B) Phenotypic characteristics of osteogenesis imperfecta (Of) (A) OI type IV and (B) OI type III. (C), (D) Radiographs of the long bones of the lower limbs (C) patient 1 with type IV OI and (D) patient 2 with the deforming type III OI.
A typical tme stress-true strain curve of Type (A) specimens is shown in Fig. 2. The tme strain is calculated from the displacement of cross-head. As can be seen, the fracture of the specimens occurs at a strain of about 0.5. Relation between true stress, a, and true strain, , in uniformly deformed Type (A) specimen is given by the following Ludwik law,... [Pg.715]

Photooxidation and deformation of polyethylene (PE) have been intensively Investigated, and mechanisms for each process have been suggested which are, more or less, well accepted (1-7). However, how photooxidation can be affected by deformation (type, extent. ..) has not been given much attention until recently (8-... [Pg.307]

Parameters L.V. Geometry Model Dimensional- ity Type of Deformation Type of Loading (Pressure)... [Pg.119]

Different types of deformation can also be distinguished in another way, for they can be either time-dependent or time-independent. A deformation is time-dependent if the material responds with a delay to changes of the load. If - in contrast - the deformation coincides with the change of the load, the deformation is time-independent. Time-dependent deformations are denoted by the prefix visco-. Altogether, four different deformation types exist since elastic as well as plastic deformations can be time-dependent or time-independent. [Pg.31]

Scheme of different deformation types in COC with different cyclic monomers ... [Pg.116]

When choosing between possible deformation types of the molecular framework in the course of a reaction, one may compare the corresponding force constants or vibration frequencies. The most likely type of deformation will correspond to a minimal vibration frequency. [Pg.39]

The deformational types are shown for a unit cube of incompressible material in Figure 3.2. In shear flow, the unit cube is merely skewed with the degree of strain given by the angle, y(t2 — h), the edge makes with the y axis. y(t2 — h)... [Pg.38]

Relates to the deformation type of polarization and appears as a result of the displacement of an atomic electron shell relative to the nucleus which, accordingly, leads to an induced dipole moment. Certainly, such a polarization mechanism takes place in all systans containing atoms, i.e., in all dielectrics however, in a pure state it can be seen in the case of nonpolar homo-atomic molecules and atoms. [Pg.287]


See other pages where Deformation types is mentioned: [Pg.133]    [Pg.294]    [Pg.256]    [Pg.256]    [Pg.317]    [Pg.47]    [Pg.83]    [Pg.25]    [Pg.72]    [Pg.75]    [Pg.273]    [Pg.16]   
See also in sourсe #XX -- [ Pg.199 ]




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