The article presents mathematical models for both salient pole and non-salient pole synchronous motors represented as electrical circuits with dependent sources, which can be used for the transient analysis of agricultural electrical power systems
In the article, we have motivated the definition of the problem of increasing of efficiency of oil production with complicated conditions. We have also considered general system problems of increasing of the efficiency of oil production with the methods of the improvement and renovations of the equipment: the equipment for optimization of the factor of the extraction of oil; oil well rod pumping units and principles of energy saving on the late stage of the production of the bore holes with complicated condition of exploitation. It is shown, that the equipment allows optimizing the factor of the extraction of oil when developing hard extraction oil stocks, combined with modern technology and methods
The results of the research of wastewater treatment including pre-ozonization have been presented. The suitability of wastewater pre-barbotage in the storage tanks has been shown. Addition of ozone in small quantities (0,2 ÷ 0,02 g/m3) can improve the wastewater treatment results in the aeration process. Addition of ozone in small quantities doesn’t lead to the significant energy consumption at once. The treated wastewater transparency increases to 50 cm depth
In the article, we have calculated the cost of the combined energy of the proposed four types of the multifunctional units and their optimal system for the conditions of grain harvesting in the Krasnodar region; the analysis of the costs has also been reviewed
Rational operation is proposed for a positional DC electric drive with constant resisting moment. Ratio between the cycle duration and electric power consumption has been identified depending on specified move
The article presents growth rates, formation of the fruit of the entities and the fruits of apple varieties of “Florina”, “Zolotoy potok” depending on the strength of growth stocks and planting schemes
The exchange experiments results have proved that in terms of aflatoxicose risk the best indicators of the digestion were revealed for the broiler chickens of the native cross “Smena-4” and foreign “Ross 308” using the toxi-nyl admixtures
The research has revealed that sodium selenite, vitamin E and bifidumbacterine should be included into the ration of the agricultural poultry to increase its antioxidant status
In the article, the results of the analysis of agrometeorological factors of formation of a crop of long-term cultures are resulted. The regressive correlation analysis of the given conditions and growth of bean and cereal grasses has allowed to establish high correlation dependence between change of a crop and number of days of growth for cereal herbage. It is noticed, that change of the efficiency of the bean is less closely connected with time of formation of herbage, than cereals. Also, for fertilized bean and cereal the correlation factor between the crop and the term of growth of the grass is higher, than for not fertilized ones. The backward correlation dependence between the changes of the maintenance of a raw protein, ashes in a forage from the first hay crop of cereal herbage and, accordingly, the sum of temperatures more 5°С is established
The treatment of vegetating plants by low - intensity laser radiation (λ = 650 nm) has lead to the increase of disease resistance and yield, as well as protein and gluten content in winter wheat grain with energy efficiency being at least 80%