Combined feeds are a determining factor in the price formation for meat and dairy products. Currently, the time of combined feed storage under normal conditions is about two months. This circumstance requires the interconnected work of the feed mill and the livestock enterprise. When small farms are provided with fodder, the smooth work of the feed mills is disrupted, and the costs of the combined feed production increase. Therefore, the improvement of storage methods for small batches of feed will help reduce the cost of production due to the smooth operation of feed mills, and meet the demand of small businesses.

The article discusses the issues that arise when determining the temperature in the region of the cathode spot in miniature protective spark gaps. The modeling principle is used to study the temperature field on the spark gap electrode. A mathematical model of the process is compiled on the basis of the balance of power entering the cathode spot and its removal inside the cathode due to thermal conductivity. A numerical solution of the obtained nonlinear heat equation with inhomogeneous boundary conditions by the finite-difference method is presented. The authors compared the found temperatures in the cathode spot for metals of the fourth and fifth groups of the Mendeleev's Periodic Table with the corresponding melting points of the selected metals. A complete correlation was obtained between these temperatures. Simulation of thermal processes in the region of the cathode spot on the electrode made of 42NA-VI alloy has been carried out. The results are presented in the form of diagrams.

The analysis of the existing technological processes of manufacturing machine parts showed that there are problems in quality assurance and efficiency improvement during finishing. A possible way to solve this problem is to use the processes of manufacturing machine parts using the cavitation effect, information about which in the technical literature is limited. The studied method of finishing machine parts with loose abrasive makes it possible to increase productivity by creating unique hydrodynamic conditions.

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The article gives a detailed description of the process of plasma decay in a weak electric field for a diode gap with a glowing cathode at low pressure. The analysis of the process is carried out under conditions when the neutralization of charged plasma particles is carried out on the diode electrodes during ambipolar diffusion. A mathematical description of the process of plasma decay is considered taking into account the displacement of its boundary -the ion layer relative to the anode; a joint solution of the ambipolar diffusion equation for unsteady mode and the law of 3/2 degree law for the ion layer near the anode is presented, taking it as a gas-filled gap. An equation is also obtained for the time of the plasma boundary moving from the anode to the cathode, and the relationship between the plasma boundary moving time and the total plasma decay time from the main discharge characteristics is shown. A new method was found for determining the plasma decay constant by constructing the dependence of the time of the plasma boundary moving from the anode to the cathode. The relationships were experimentally verified and a fairly high consistency was obtained between the theoretical and experimental values of the plasma decay time constant.