Considered theory of termofluktuacion strength of solids. Formulas for predicting long-term strength limits. Set the value of a safe low voltage of compression depends on the physical and mechanical
material constants. For a number of technical glass received the numerical estimation of compressive stresses safety.
The problem of calculation of arguments of the controlled cascade electric drive is reviewed. For a basis the electric drive is taken by the designed writers. For definition of the moments the method grounded on electromechanical transforming of energy is proposed.
On an example of a present construction the values of currents of a stator and rotor and phase angles of these currents were retrieved. It has allowed to find the energy, accumulated by the device, in the given instant. Utilizing this result, the instantaneous moment was defined. The introduced mathematical model realized as the program in environment Delphi. Inaccuracy for an audit example did not exceed 10-15 %
The authors have developed classification tools for
grinding feeds and the most promising directions in the
development of tools for the grinding of forages in reducing
energy and metal consumption. We have described
chopper stem of feed, which provides high performance
and good quality of product. In the article,
there is an analysis of existing methods of grinding
coarse fodder and their classification. The work presents
examples of application of stationary and mobile
crushers for crushing of grain and roughage, the technical
parameters of the equipment for preparation of
feed for feeding
The article presents the design study for construction
of a drainage system on the territory of gardening
association «Zarya» in the region of Gukovo in
Krasnosulinsky district of Rostov region.
Construction of a drainage system is a prerequisite
for reducing the groundwater level caused by the
infiltration of the drainage complex mine called
Burgustinskaya. The results of the calculations
determined the value of the total infiltration
groundwater feeding; inflow rate to each of the 6
drains per unit length, water flow ability of a
horizontal pipe drainage, as well as a diameter of
drainage pipes
In this article the questions connected with distribution of ozone at disinfection of fodder grain and drawing up balance of an expenditure of ozone were revealed. The work contains the theoretically received dependences which were confirmed experimentally
We have presented the program, methodology and the results of the experimental research of the functioning of a complex for climate control of beehives
The article examines the existing technologies and facilities for the preparation of soybeans for feeding animals, and de-veloped a technological line of preparation of high-protein feed based on soybean. The design of a chopper for soaked soybeans, working on the proposed technology has been pre-sented
The article deals with one of the promising areas belonging to energy-saving technologies; it is the introduction of biogasoline stations into agricultural production. The analysis of the application in the world has been shown. To determine the cost-effectiveness of biogasoline stations we have shown the data for the calculation of the potential of biomass: organic waste settlements; animal waste; waste of poultry; crop residues; waste processing industry. We have obtained graphic dependences of electricity generated in the day from livestock and poultry, as well as the number of sunflower, rice, and sugar beets. The table also shows the thermal properties of organic agricultural wastes, allowing increasing the efficiency of calculations to determine the biomass resources. We have considered the schemes of biogasoline stations, a gas turbine power plant and a steam turbine power plant and disclosed the features of their work. To improve the operating and technical specifications of the stations intended for power generation we have proposed using non-contact generators and stabilization of parameters of electric power in their designs to carry out direct frequency converter. We have disclosed the advantages and disadvantages of biogas, as well as the direction of its effective use. It is shown that the use of all the possibilities in the complex of biogasoline stationns (production of fertilizers and motor oil, production of heat and electricity) would improve the efficiency and the payback of investment would be from 3 to 5 years, which is mainly determined by the volumes of biomass
In this article we present the analysis of all the theoretic approaches for modernization and maintenance of historical centers of the cities by the design sources in the point of view of systemic approach to the investigation of the problems. It is revealed that in the concerning area there is a wide experience of investigations and also a big number of various attempts of creation and development of methodological apparatus, which determines the strategy of application of the design products to urban environment in general and to historical environment in particular. However, the complex of scientifically-based solution of the problems in indicated sphere has not developed yet, and as a consequence, the common strategy of maintenance and modernization of historical centers by the design sources are not determined yet.
These results of carried out investigations can become a basis for the development of systemic approach for conflict-free penetration into natural historically formed context of the design objects and the saturation of the existing environment
The article gives a formulation of the problem of logistic management of forest resources. Different variants of its decision on the strategic and tactical levels are described