Use of Computer Imitation Models in Teaching Quantum Electronics

The article deals with the use of computer simulation models in the teaching of quantum electronics, the latest achievements of information technology in education, the analysis of existing scientific publications on the application of software in the educational process, the problems in this area. , the relevance of the idea put forward. It was noted that the peculiarities of teaching physics, the impossibility of observing them in natural conditions, the difficulty of explaining such processes in the traditional method of teaching. In the science of "quantum electronics" created a computer simulation model of processes that can not be observed in natural conditions. The results obtained are given, the importance is stated

STUDY OF OPERATING CONDITIONS OF COMBINED UNIT

The article presents the results of research on the technology aimed at minimal tillage of the soil and the study of the operating conditions of the combined unit that implements it. It was found that the hardness and density of the egat soil is higher than that of the ryegrass and stalks, due to the compaction of the egat soil during the growing season under the influence of the wheels of the mowing tractor

RESERVES FOR REDUCING FUEL AND ENERGY COSTS FOR CULTIVATION OF COTTON IN THE CONDITIONS OF THE REPUBLIC OF UZBEKISTAN

The analysis of the structure of the use of fuel and energy resources in the cultivation and harvesting of agricultural crops is carried out. The issues of a possible reduction in fuel consumption for pre-sowing tillage for cotton when using various sets of machines are considered. Comparative indicators of these machines (labor costs, energy and productivity) are given. Table-2

Study Of Operating Conditions Of Combined Unit

The article presents the results of research on the technology aimed at minimal tillage of the soil and the study of the operating conditions of the combined unit that implements it. It was found that the hardness and density of the egat soil is higher than that of the ryegrass and stalks, due to the compaction of the egat soil during the growing season under the influence of the wheels of the mowing tractor

Anode behavior of aluminum alloy AB1 with magnesium

In modern technology, the main advantages of aluminum alloys as structural materials are lightness, pliability to stamping, corrosion resistance (in air, aluminum is instantly covered with a strong film of Al2O3, which prevents its further oxidation), high thermal conductivity, and non-toxicity of its compounds. These properties have made aluminum alloys the main raw material in the aviation and aerospace industries and, more recently, as a composite material. Regarding specific strength (the ratio of ultimate strength to density), aluminum alloys are significantly superior to steel. Therefore, in the article, the electrochemical properties of the aluminum alloy AB1 with magnesium in the NaCl electrolyte medium were studied by the potentiodynamic method with a potential sweep rate of 2 mV / s. It is shown that alloying the AB1 alloy with magnesium up to 1.0 wt.% Increases its anodic stability by 30% in the NaCl electrolyte environment. It was found that with an increase in the concentration of chloride - ion, the corrosion rate of alloys increases, and the potentials of free corrosion, pitting formation, and repassivation of alloys decrease. An increase in the content of the alloying component shifts the indicated potentials to the positive region

Obtaining manganese silicide films on a silicon substrate by the diffusion method

Investigation of auto-oscillation currents in compensated silicon doped with impurity atoms of manganese, zinc, sulphur or selenium can observe several types of current instabilities with different natures and excitation conditions. The boundary regions of auto-oscillation currents such as temperature instabilities, recombination waves and injection instabilities in temperature, electric field, intensity of illumination as well as in resistivity and conductivity type of compensated silicon samples were determined. From the analysis of the obtained results the possibility of using the detected auto-oscillation currents in compensated silicon for creating solid-state generators and sensors of physical quantities is shown. The mechanism of manganese diffusion into silicon leading to the formation of higher manganese silicides on the silicon surface was determined. The X-ray analysis data allowed to find that in the temperature range of thermal annealing T=800÷1100°C, polycrystalline films corresponding to the phases of higher manganese silicides are formed. The possibility of creating the efficient thermopiles based on the obtained structures of the MnxSi1-x – Si-MnxSi1-x type based on silicon, the operating parameters of which are not inferior to existing thermopiles, and sometimes have certain advantages, is shown