Orientation instability

Several other formal features of Huxley s trance condition are of interest with respect to the analogy we have drawn with REM sleep dreaming. We first consider the relaxed posture, indicating a step on the path to cataplexy. In full-blown cataplexy, the assumption of a flaccid posture is associated with the inability to move on command and is thus similar to the active motor paralysis of REM sleep dreams. Anesthesia and amnesia were both present in Huxley s trance, although they tended to be selective, and when Huxley attempted to make them global, his trance deepened. Time distortion, a distinctive component of the orientational instability of dreams, was a robust aspect of Huxley s altered state. 

The second is that the startle hypothesis could also link sensorimotor orientation to cognitive orientation, and by constantly forcing a resetting of the former system wreak havoc with the latter. This would help us understand the orientational instability at the root of dream bizarreness. By orientational instability, I mean the tendency for dream people, places, times, and actions to be discontinuous and/or incongruous, as if the brain-mind system could never settle on a stable, internally consistent set... 

Equation (157) shows a square root divergence of the distance between walls at the Cl-transition. For more details (including a discussion of the Novaco-McTague (1977) orientational instability on hexagonal substrates) we refer the reader to Villain s (1980) beautiful review. 

Newell-Whitehead-Segel equation, 23 Non-potential effects, 41 Orientational instability, 283 Pattern formation, 1,11 Phase field, 168 Polymerization wave, 235, 239 Polymerization waves, 236, 238 Propagating front, 260-261 Quantum dots, 123-124 Rayleigh-Benard convection, 61 SHS, 247-248 Smectics, 57 Spiral wave, 47 Stochastic oscillations, 92 Stripes, 2, 10 Surface diffusion, 126... 

R. B. Nicklas, and C. A. Koch. 1970. Temperature-induced orientation instability... 

Figure 5, Ultrasonically induced orientational instability in planar nematics, (a) Spatial period of domains versus layer thickness,/= 3.2 MHz, T= 30,2 °C. (b) Calculated and measured threshold parameters characterizing the wave field in the layer versus temperature of the nematics the running values of / (tension) and v" are normalized to the values of 7 and f corresponding to the lower limit of the test temperature interval (T=22.8°C), T=Tf/, -T.

Deliberately oriented polystyrene is available in two forms filament (mono-axially oriented) and film (biaxially oriented). In both cases the increase in tensile strength in the direction of stretching is offset by a reduction in softening point because of the inherent instability of oriented molecules. 

In addition, this type of compressor tends to have both the suction and discharge ports on the same side of the compressor s housing. As a result, there is a potential for aerodynamic instability within the compressor. Orientation of the primary (X-axis) radial measurement point should be opposite the discharge port and oriented toward the discharge. The secondary (Y-axis) radial point should be in the direction of shaft rotation and 90° from the primary radial point. 

An axial (Z-axis) measurement point should be located on the fixed bearing housing. It should be oriented toward the driver to capture any instability that may exist. 

Flow effects on non-neutrally buoyant emulsions and suspensions can be studied in various geometries. For example, flow in rotating cylinder and narrow gap concentric cylinder geometries in both horizontal and vertical orientations can be studied. Flow instabilities in settling suspensions in a horizontal rotating cylinder have recently been reported [84], Measurements of velocity fields have not been reported in the literature, but can be performed by using the methods presented in this work. 

Self-assembled nanorods of vanadium oxide bundles were synthesized by treating bulk V2O5 with high intensity ultrasound [34]. By prolonging the duration of ultrasound irradiation, uniform, well defined shapes and surface structures and smaller size of nanorod vanadium oxide bundles were obtained. Three steps which occur in sequence have been proposed for the self-assembly of nanorods into bundles (1) Formation of V2O5 nuclei due to the ultrasound induced dissolution and a further oriented attachment causes the formation of nanorods (2) Side-by-side attachment of individual nanorods to assemble into nanorods (3) Instability of the self-assembled V2O5 nanorod bundles lead to the formation of V2O5 primary nanoparticles. It is also believed that such nanorods are more active for n-butane oxidation. 

Hydrolytic instability is one of the major weak points of polyesters. Both PEN and PET films are biaxially oriented and heat set, and similar filler systems and surface treatments can be used for both films. PEN, however, has better... 

Damaskin and Baturina [171] have studied unstable states during coumarin adsorption on mercury electrode. These instabilities were attributed to the nonequilibrium phase transitions in the adsorption layer, during which the orientation of coumarin molecules changed at the electrode surface. 

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