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The Derivation of Conservation Laws [PDF]
, 1990 To see how conservation laws arise from physical principles, we will begin by deriving the equation for conservation of mass in a one-dimensional gas dynamics problem, for example flow in a tube where properties of the gas such as density and velocity are assumed to be constant across each cross section of the tube.
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2015
Legislation plays an important role in biodiversity conservation in China, it includes: constitutional provisions; biodiversity-related laws; regulations; rules; and normative documents. The content of all these biodiversity conservation laws include the following aspects: ecosystem protection and conservation; natural reserves; utilization of wild ...
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Legislation plays an important role in biodiversity conservation in China, it includes: constitutional provisions; biodiversity-related laws; regulations; rules; and normative documents. The content of all these biodiversity conservation laws include the following aspects: ecosystem protection and conservation; natural reserves; utilization of wild ...
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Symmetries and Conservation Laws
2013Symmetry means simply that there are different ‘perspectives’ from which a physical system looks the same. In other words, the system is invariant under a certain symmetry operation such as rotation or reflection, and its mathematical description does not change as a result of the transformation. This leads to a remarkable coupling of the geometric and
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2015
The motion of a compressible fluid with negligible viscosity (gas dynamics) or the propagation of waves in shallow waters are typical phenomena leading to systems of first order conservation laws. This chapter constitutes an introduction to the basic concepts in this important area of nonlinear PDEs, still lacking of a completely satisfactory theory ...
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The motion of a compressible fluid with negligible viscosity (gas dynamics) or the propagation of waves in shallow waters are typical phenomena leading to systems of first order conservation laws. This chapter constitutes an introduction to the basic concepts in this important area of nonlinear PDEs, still lacking of a completely satisfactory theory ...
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