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Mechanisms of water-salt metabolism disturbances in dogs subjected to six month hypokinesia
Water-salt metabolism in dogs during prolonged restricted motor activity (hypokinesia) was investigated. It was found that hydration occurred and fluid was redistributed between the extra- and intra-cellular sectors. Also, electrolyte excretion rose, and magnetism and calcium metabolism changed significantly. It is concluded that the forces caused by muscle strain proper (which was decreased under conditions of hypokinesia) influence the state of bone metabolism
A contribution to the mathematical theory of diffraction. Part II: Recovering the far-field asymptotics of the quarter-plane problem
We apply the stationary phase method developed in (Assier, Shanin \&
Korolkov, QJMAM, 76(1), 2022) to the problem of wave diffraction by a
quarter-plane. The wave field is written as a double Fourier transform of an
unknown spectral function. We make use of the analytical continuation results
of (Assier \& Shanin, QJMAM, 72(1), 2018) to uncover the singularity structure
of this spectral function. This allows us to provide a closed-form far-field
asymptotic expansion of the field by estimating the double Fourier integral
near some special points of the spectral function. All the known results on the
far-field asymptotics of the quarter-plane problem are recovered, and new
mathematical expressions are derived for the secondary diffracted waves in the
plane of the scatterer
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