Low level of water accounting and poor control in
water distribution in the irrigation system are the main
negative factors of industrial influence on irrigated
natural complexes. Complex ecosystem way to control
water resources involves qualitative improvement and
optimization of all parts and elements of irrigation
system, from the headwater pool, main channels to
local water distribution channels. In this regard, when
engineering, constructing, using some new and
reconstructed old irrigated systems, the most important
problems are the optimization of water use from
natural water resources, development and use of highly
efficient water-saving and energy-saving technologies
of water distribution and water use in the irrigation
system. The problem of economical and efficient
consumption of water resources on the studied water
complex cannot be solved successfully without any
related consideration of water accounting and water
consumption questions based on system principles.
System principles are supposed to collect, analyze and
use the information, with the help of complex technical
means, which are used for water measurement in
conditions of water charges, and for the purpose to
control the technological processes of water supply
and water drainage, when the needs of water users are
satisfied and the environment get less damage. In the
work, we study the mathematical calculation of the
unsteady water line in the Krasnodar suburban channel
for water measurement. The imitated research of
hydraulic processes were carried out on the
mathematical model of water measurement, based on the characteristic methods, with the use of analytical
solution of ordinary differential equations of the initial
characteristics. The use of the considered method of
water measurement in irrigation channels with the use
of analytical solution of ordinary differential equations
of initial characteristics will allow to optimize the
processes of water measurement and to minimize idle
and non-technological discharges of water from the
system
We have reviewed the methodology on a specific example of greenhouses of type 6D, the calculation of the bearing capacity of the upper and bottom zones roof trusses. The urgent need for in-depth analysis of the issue bearing capacity appeared in the light of a rather massive construction of greenhouses, especially in the Southern Federal District, as its constructive is purchased in the Middle East. However, the simple transfer of designs greenhouses made in the Middle East, to the territory of the Russian Federation is not completed successfully. These structures cannot withstand greenhouses in some cases, according to the service manual, snow loads, in other cases, wind loads, and in the third case, the construct may be destroyed for no apparent reason. Need to clarify the situation become clearer. Successive static, dynamic and seismic analysis carried out by force in the territory of the Russian Federation regulations and norms provider in relation to the actual sections bearing structural elements, revealed The following percentages of use of structural elements under consideration. According to the standards of the Russian Federation, for the first limit of the percentage of use - 395%; the second limit of the percentage of use - 999%; according to the norms of the Russian Federation with the load provider for the first limit of the percentage of use - 339.3%; the second limit of the percentage of use - 999%. The upper chord coating: according to the standards of the Russian Federation, for the first limit of the percentage of use - 495.2%; the second limit of the percentage of use - 361.4%; according to the norms of the Russian Federation with the load provider for the first limit of the percentage of use - 150.8%; the second limit of the percentage of use - 146.2%. The analysis presented allows us to conclude that when uploading the upper and lower zones of farms covering greenhouses, load combinations specific to the location of the greenhouse type 6D, their carrying capacity and hence the structure as a whole is not guaranteed
The article deals with the calculation of basic parameters of making bulk materials on the surface of the field. This calculation makes it possible to obtain data on the required amount of particulate matter
We have presented a comprehensive calculation of chain drive with internal teeth, comprising: geometric calculations, power and dynamic parameters of the transmission, as well as a method for fabricating the sprocket with internal teeth and wear prediction model of roller chain
In the article the presented questions of theoretical research of processes of an electric resonance of the generator of ozone were discussed and their influence on productivity and electro-ozonizer efficiency was also defined
This article discusses the basic analytical expressions for the calculation of power generators and select features basic functional units of wind turbines, allowing the design phase to conduct a preliminary assessment of the effectiveness of wind power stations, which supplies specific consumers of electric power
The technique of determining earthen channel hydraulic parameters using the solutions of differential equations describing the steady non-uniform flow of water in open channels with variable flow is shown
The article presents a calculation of traction resistance chisel working organ for layered subsurface soil treatment and proposed the construction of a working body for subsurface tillage with an elliptical element. We have also included a comparative analysis of traction resistance of workers to the waterline and moldboard tillage
A method is considered, on the concrete example of hothouses of type of 6D, for calculation of bearing strength of overhead and lower belts of farms of coverage. The vital necessity of deep analysis of the question of bearing strength appeared in the light of satisfied mass erection of hothouses constructions of which are bought in the countries of Near East. However, a simple transfer of constructions of hothouses made in the countries of Near East can not be successful on the territory of the Russian Federation. These constructions of hothouses can not be maintained in some conditions, according to service exploitation, like snow loadings, in other cases - wind loadings, and in third case, a construction can collapse without visible reasons. The conducted successive static, dynamic and seismic analysis, executed due to the normative documents and the norms of supplier operating on the territory of the Russian Federation, in attachment to the real sections of bearings structural elements, allowed us expose the stated below percentage of the use of the examined elements of constructions. Lower belt of farms of coverage: on the norms of the Russian Federation, on the first maximum state percent of the use – 395 %; there is a percent of the use on the second maximum state – 999 %; on the norms of the Russian Federation taking into account loadings of supplier, on the first maximum state percent of the use – 339,3 %; there is a percent of the use on the second maximum state – 999 %. Overhead belt of farms of coverage: on the norms of the Russian Federation, on the first maximum state percent of the use – 495,2%; there is a percent of the use on the second maximum state – 361,4 %; on the norms of the Russian Federation taking into account loadings of supplier, on the first maximum state percent of the use – 150,8 %; there is a percent of the use on the second maximum state – 146,2%. Analysis presented allows establishing that at the load of overhead and lower belts of farms of coverage of hothouses, by combinations of loadings characteristic for the place of location of hothouse of type of 6d, their bearing strength, and buildings in general can not be provided
The article considers the evaluation of resistance of the CMOS components in the structure of VLSI CAD, obtained by the computational method. Methods for calculating test results were using CMOS IC. We present the results of the calculation and analysis of the valve as the main component of the integrated circuit