We use the Landau theory of phase transitions to obtain the global phase diagram concerning the uniaxial nematic, biaxial nematic, uniaxial smectic-A and biaxial smectic-A phases.
Each site of the lattice has a constituent unit that takes only six orientations and is understood as being a...
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One example is the random walk, which serves as a model for several random phenomena. At regular intervals of time, a walker takes a step forward or backward here at random and independent of the previous here steps. Th...
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A flame is a striking manifestation of combustion, which consists of the intense combination of a substance with oxygen. The reaction with oxygen can be daniel dantas facebook mild such as rust, spontaneously occurring in iron e...
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The mixtures of pure substances are quite common in nature. website Some mixtures are homogeneous others are heterogeneous. The atmospheric air is a homogeneous gaseous mixture of nitrogen, oxygen and other gases in smaller proportions.