The work is aimed at the development and experimental testing of the polarization-spectral method for analyzing the polycrystalline structure of the synovial fluid films of a human joint. comparing the sensitivity, specificity and accuracy of the methods of polarimetry in the diagnosis and differentiation of the above pathological conditions of the joints, we can conclude: the highest sensitivity, specificity and accuracy are demonstrated by the method of spectropolarimetry, sensitivity reaches 92 - 93%, specificity - 82 - 86%, and accuracy - 88% - 89%. additionally, the possibility of diagnosing the type of brain stroke by changing the polarization spectral characteristics is considered.
The theoretical analysis of the open electrodynamic system, which is a symbiosis of an open resonator and a segment of a rectangular waveguide, is carried out in the work. It is shown that the transverse dimensions of the waveguide made at the center of one of the mirrors of the open resonator are uniquely determined by the geometric parameters of the resonator and the working wavelength. In this case, the maximum efficiency of excitation of the main wave ТЕ10 in a rectangular waveguide with the help of the fundamental oscillation of the open resonator ТЕМ00q is 88%. As it turned out, in this case the normalized transverse dimensions of the waveguide are oversized, and the considered system can be used to measure the ultra-weak luminescence of seeds of grain crops.
The article deals with changes in the amplitude-frequency spectrum of blood flow fluctuations in the perioperative period in patients with adhesive intestinal obstruction using computer diagnostics. To study the state of the microcirculatory bed and the mechanisms of its regulation, laser Doppler flowmetry was performed. Available results indicate significant changes at the level of the microcirculation system. Violation of blood circulation of tissues and decrease in body temperature at the end of surgery leads to hypoxia of organs and systems of the body, their dysfunction, and subsequently, insufficient functioning of the parenchymal organs and the development of complications.
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