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Spatiotemporal structures

To observe the transient spatiotemporal structure of the WP interference, we have performed the fs pump-fs probe experiment [37], The sample gas was prepared by molecular jet expansion of the mixture of iodine vapor and Ar buffer gas into a vacuum chamber. A continuous gas jet is preferable when we use a high-repetition-rate laser system. The estimated vibrational temperature was 170K[37]. [Pg.290]

By tuning the wavelength of the probe pulse, we can visualize the spatiotemporal structure of the WP motion. We have performed such experiments by tuning... [Pg.291]

This section is devoted to biological order, organization, and evolution. We have already seen in Appendix F that constructive integration of quantum and thermal correlations under appropriate conditions lead to a so-called CDS, i.e., an optimal spatiotemporal structure formed by the precise relations between time, size, and temperature scales. CDS suggests microscopic selforganization including Godel-like self-referential traits. [Pg.76]

Patterns, i.e. regular spatiotemporal structures, can easily be generated in liquid crystals via a large variety of external stresses, e.g., by mechanical shear, temperature or pressure gradients, electric or magnetic fields, etc. representative examples can be found in Buka and Kramer. Here we concentrate on patterns induced by electric fields in nematics and in particular on the implications of flexoelectricity. [Pg.102]

Concerning miscibility between the metal constituents of an alloy, all types of alloys could be obtained by electrodeposition eutectic-type alloys, solid solution-type alloys, alloys with intermediate phases, and/or intermetallic compounds [1]. According to Krastev and Dobrovolska [40], self-organization phenomena during the electrodeposition of alloys, resulting in pattern and spatiotemporal structure... [Pg.262]

AU the remarks mentioned above are applicable as well to the electrodeposition of alloys. Using Breimer s classification of alloy electrodeposition, e.g., equilibrium, regular, anomalous, etc., all existing combinations of deposition parameters and their influence on the alloy morphology are analyzed. Interestingly, certain features, which are not recognized in the electrodeposition of pure metals, are observed in the alloy depositiOTi processes. An example includes the spatiotemporal structures, which is discussed in this book. [Pg.375]

Various types of oscillating behaviors such as emergence of chemical waves, chaotic patterns, and a rich variety of spatiotemporal structures are investigated in oscillatory chemical reactions in association with nonlinear chemical dynamics [1-3]. In non-equilibrium condition, the characteristic dynamics of such chemically reacting systems are capable to self-organize into diverse kinds of assembly patterns. With the help of nonlinear chemical dynamics, the complexity and orderliness of those chemical processes can be explained properly. Various biological processes which exhibited very time-based flucmations especially when they are away from equilibrium have also been described by mechanistic considerations and theoretical techniques of nonlinear chemical dynamics [4-7]. [Pg.16]

Recent model calculations (Pearson, 1993), supported by experiments (Lee et al., 1993) on the EOE reaction in an open unstirred reactor, show that even relatively simple systems are capable of exhibiting an enormous variety of steady and time-dependent, periodic and aperiodic, spatiotemporal structures. To date, it is not clear whether all of the possibilities are known. The task of cataloging them, and of characterizing the bifurcations that may occur as one varies the constraints on a system, will provide exciting work for chemists and mathematicians for many years. [Pg.323]

This chapter deals with the simulation of set systems and its contribution to the validation and understanding of the model. Knowing the spatiotemporal structures of the stimulus- response pathways, it is possible to emulate them in a computer program. This simuluation produces the same distributions as the subjects (if the equations of the program and the subject are identical). [Pg.303]

Now, the actual second part of the work starts with the spatiotemporal structure of stimulus-response pathways.The basis of the whole work is the measurement of the elementary times. In order to achieve this goal, different methods have been developed which should give convergent evidence. [Pg.352]

It is followed by the simulation of set systems and its contribution to the validation and understanding of the model. Having these spatiotemporal structures of... [Pg.354]

At last, there was the deep belief that the spatiotemporal structure of mental activity can be found and understood, which implies that the human mind has the power to understand itself, at least in some respect. [Pg.363]


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See also in sourсe #XX -- [ Pg.262 , Pg.263 ]




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