This article discusses the pathogenic threat to humans thermophilic microorganisms encountered in recirculation aquaculture systems for growing fish. This article discusses such genera as — Escherichia, Salmonella, Staphylococcus, Vibrio, Pseudomonas, Aeromonas and some of their subspecies, the most characteristic and representing the greatest distribution and danger to humans, including golden and methicillin-resistant Staphylococcus aureus and MRSA (S. aureus and MRSA), hydrophilic aeromanad (A. hydrophilia), Pseudomonas aeruginosa, cholerogenic (V. cholerae) and non-cholerogenic (V. parahaemolyticus, V. vulnificus and others) vibrions. Their pathogenic mechanism, the diseases they cause in humans, their danger and resistance to environmental conditions, as well as their sensitivity to antimicrobials and antibiotics also considered. In addition, the topic of preventing them from entering the ultrasound system and possible preventive measures discussed.
The problems of designing a hexapod control system - a mechanism with parallel kinematics, designed for guidance and positioning of instruments and antennas of orbiting satellite platforms are considered. Based on the solution of the extended kinematics problem, the algorithm for controlling linear drives with a kinematic pair of screw-nut and two two-axis hinges is specified. The hexapod control scheme with the spatial load position sensor is given, the feasibility of positional control algorithms is estimated on the basis of the modern domestic element base. The estimation is made by the method of mathematical modeling. An algorithm for adaptive neural network control of a hexapod is proposed. An artificial neural network has been developed, which together with a nonlinear controller regulates the force acting on linear actuators by control error. To assess the quality of hexapod control, a dynamic model of the hexapod control system was created in the simulation package SimMechanics of the MATLAB Simulink system. A description is given of the hardware part of the digital control system-the hexapod control unit).
The purpose of the research is to establish functional characteristics for the Ivankovsky water intake, hydrological features of the hydroelectric power station water area, biological parameters of representative fish and to develop recommendations for fish protection for retrofitting this object, with a non-capital nature. The surveys were determined by the terms of reference for the contract, the biological parameters of representative species of ichthyofauna in the water area of this object. Ichthyological samples (control catches) were made according to the scheme: 2 double catches at the object: the 1st-in the water intake zone; and the 2nd -on the border of the sanitary zone of the upper stream, in the period May-August. Dominant in number to the rest of the fish were: tyulka (Freshwater tyulka) is 82% in the water column and bream (Abramis brama) is almost 90% at the bottom, followed by gustera (Blicca bjoerkna) -in pelagial and at the bottom (7-10%). Because of this, the RZS designed at the facility should mainly meet the conservation of Freshwater tyulka (Freshwater tyulka) and bream (Abramis brama). It is recommended to use complex reds according to the "input-action-output" scheme with the use of additional reds for environmental and behavioral protection methods: air-bubble curtains or electric fish barriers-focused on fry and fish up to 20-30 mm, when combined with mechanical fish protection for larger fish.
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