Azov-Blacksea State Agroengineering Academy
Author list of organization
List of articles written by the authors of the organization
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Description
The article is devoted to the mathematical modeling of the air temperature changing process in intergranular space during the microwave-recirculation grain drying with active aeration
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SIMULATION OF THE SPRINKLING PROCESS WITH THE MACHINES OF FRONT ACTION WITH SECTOR NOZZLES
DescriptionThe article deals with the methods of mathematical simulation of water distribution processes by the machine of unbroken front moving with deflector nozzles of sector influence. Mathematical simulation using lets choose the optimum labor and money expenditure. The nozzles work under low pressures, it results in power inputs reduction of liquid distribution process about the field along with more regular water distribution. The coefficient of water doze variation 1,71% under 7 m distance between the nozzles is got in the circulation example
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Description
The article is devoted to methodological approaches to empirical researches directed on revealing of the enterprise types of with property attitudes, providing the best efficiency of agricultural enterprises. The article deals with the sources of the initial information and methods of its processing
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Description
In the article, the method procedure, allowing to define the amplitude of a switching overstrain is described when switching by the solenoid starter of the asynchronous electric motor
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Description
The aim of the study was to improve evaluation of the uniformity of irrigation with a machine of continuous translational motion, according to the test results of the apparatus with radial methods. Research method – mathematical modeling of the running of four machines of circular actions on a device of continuous translational motion using the result of the tests of the device with a radial method. The algorithm of calculation, recommended by the standard ISO 7749-2-2004, has been improved to minimize manual calculations and measurements. The algorithm is implemented in a computer program. Program of CDU(B) implements an advanced algorhythm. The program calculates a matrix of irrigation doses on meter squares area of spray irrigation between the positions of the two devices. The progressive movement of the machine is modeled by summing the doses in column-major order with constant X. At vector doses after the passage of the machine, it calculates the coefficient of uniformity of irrigation by Christiansen. The calculation is performed at different steps of the installation of devices, and so it determines the optimal location of them. The improved algorithm of calculating the figures of sprinkling uniformity using the test results for devices using a radial method was implemented in the program of the CDU(A) [1]; it allows to choose the optimal step for installation of devices. The algorithm of calculating the uniformity in the step of installation of the apparatus on the pipeline which is greater than the radius of the irrigation apparatus simulates the operation of two devices. During the installation step of the apparatus of smaller radius than irrigation apparatus, we model the work of four adjacent devices. The optimal step of installation of i-Wob is 14.5 meters, which is 1.75 times greater than the radius of the irrigation system and 1.5 times greater than the pitch of stationary devices with the same tolerance on the uniformity. Two-nozzle devices, which assessment standard does not meet the requirements of the uniformity of irrigation at the drive of the translational motion ensures a better distribution in the pitch of less than 24 meters
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Description
Solar collectors of helio water heater with ramified surface were developed. We have made an energy estimation of helio unit construction and enhancement of the efficiency of its work because of multiple reflections of solar fluxes
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Description
We have made energy estimation of absorbed solar fluxes with a glance of diffuse insolation which passes through double- glazing unit to the right-angled planar radiator. While designing the model it was conceded to assume that direct solar radiation is the radiation of a point source
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MATHEMATICAL MODEL OF A MACHINE AND TRACTOR UNIT WITH EDM IN TRANSMISSION OF A TRACTOR
DescriptionThe developed mathematical model of the machine and tractor unit with the elastically damping mechanism in transmission of a tractor is given in the article. The analysis of mathematical model of the arable unit on the basis of a tractor with EDM in transmission showed that the MTU mathematical model can be considered as working
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THE CRITERION EQUATION OF GRAIN DRYING BY THE ACTIVE AERATION WITH ELECTRO ACTIVATION AIR
DescriptionThe article is devoted to deduction of the criteria equation for grain drying by the active aeration with the electroactivated air use. The criteria equation is deduced with the use of the grain thick layer drying equations by the active aeration and the similarity theory
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CORRELATION AMONG QUANTITATIVE TRAITS OF SORGHUM GRAIN
06.00.00 Agricultural sciences
DescriptionAt present, the farmers have to develop varieties and hybrids, which fully meet the requirements of agricultural production. The study of correlation among economic-valuable characteristics of grain sorghum is of great importance nowadays, as it allows optimizing plant-breeding work at its early stages. For a more productive process of developing of the initial material in breeding, it is necessary to determine the correlation among the traits to identify the strongest connections, and to conduct further work, based on the obtained data. Knowing the correlation, the estimation of timeconsuming economic trait can be replaced by the assessment of the simpler trait correlated with it. The article presents the analysis of correlation among various traits of grain sorghum. The degree and direction of the correlation have been estimated. The significant effect of the length of vegetation period on many traits has been seen. There have been also mentioned the characteristics, having an influence on a size and a number of kernels per panicle. There is a positive correlation between a size of panicle and dimensions of a leaf (length, width). Along with it there has been found a positive correlation among linier dimensions of a panicle, length and width of a leaf, a number of leaves with a number of kernels per panicle. While studying the correlation between an extension of a panicle with other traits, there has been noted a negative correlation between a length of vegetation period, length and width of a leaf, but there has been found a positive correlation with plant height. There has been found a positive effect of 1000-kernel weight, a number of kernels per panicle, a number of leaves and their dimensions on the formation of kernel weight per panicle