05.00.00 Technical science
- Description
-
Description
There is a presentation of the operation analysis of the harvesting-transportation complex with using the system of collecting and processing information and there is estimation of its impact on the complex productiveness
-
ANALYTICAL ASPECTS OF A HIGH-PROTEIN FEED PREPARATION
DescriptionThe 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
-
Description
In this article we have identified analytical dependences of position of an automatic control system output coordinate for optimum speed diagrams for small movements of actuating device of electric drive and its moving error value
-
Description
The industrial safety on cereal production is currently important due to the severity of the consequences of accidents occurring to them. It should be noted that, despite the considerable efforts of recent years, awareness-raising and supervisory plan towards preventing their occurrence, the lack of attention of organizations operating hazardous production facilities to comply with the relevant standards and requirements allows us to characterize the recent situation in this area quite difficult, as evidenced by statistics. In this article it is clearly illustrated the qualitative and quantitative expression of such an approach in practice. The conceptual framework is disclosed in the light of efforts to carry out industrial safety examination in the conformity assessment of hazardous industrial facilities according to industrial safety requirements in the Russian Federation. The basic methods and technical means used for the prevention of accidents at hazardous production facilities of storage and processing of plant raw materials provide an overview of domestic and foreign producers. The item-description of the system of protection of buildings and facilities of hazardous production facilities is given taking into account the industry specifics. There are specified the key factors meeting modern technical requirements, cost-based position of enterprises, ensuring conditions for safe operation of the storage and processing of plant raw materials
-
ANALYTICAL RESEARCH OF THE MOVEMENT OF COMPONENTS OF FORAGES IN RELATIVE SCREW DRUMS
DescriptionThe article presents the results of the analytical research of the movement of components of forages in screw drums on the example of relative reels of Rts7.1.A and Rts5.1a having the next feature: on the perimeter, we have obviously expressed conditionally cylindrical screw lines formed. The carried-out analysis of the movement of particles of components of forages in relative screw drums and the executed review of mathematical models in relation to the movement of components of forages in relative screw drums, including a model of a continuous stream of particles of components of forages, a model of power balance of the movement of a continuous stream of particles of components of forages, a model of the movement of components of forages as a material point has been shown. Analytical dependences for determination of longitudinal speed of movement of components of forages and the length of a relative screw drum are presented. The article examines specified settlement models of the movement of components of forages in relative screw drums
-
Description
At the nodes of the various machines, we use plain bimetal bearings: a steel base - antifriction cladding layer. Bimetal bearings have increased performance. One of the ways of making such bearings is the way of centrifugal bimetallization with heating of the independent electric arc. An important requirement of this technology is a uniform heating of the workpiece along the entire length until the formation of a continuous layer of the molten cladding material. The process of bimetallization require temperature control, since within the movement of the electric arc, low heat or high heat are possible due to heat dissipation from the ends of the workpiece in the installation and from the outer surface of the workpiece to the environment. A viable option the temperature control of the heat process of bimetallization for industrial conditions is to control the temperature of the outer surface of the steel base. It is necessary to solve the heat problem of the relationship between the temperature on the surface of the workpiece with the temperature on the boundary layers. For this purpose the numerical solution of the mathematical model of the thermal process, which includes the heat transmitting equation of Fourier and heat transfer at the ends of the sleeve according to Newton's law. The equivalent coefficients of heat transfer are obtained based on calculated and experimental thermograms. This is a time-consuming work. To minimize the time of fixing the boundary value problem of the thermal process of bimetallization, in this work we present the preliminary modeling based on the analytical solution of the thermal task of bi-metallization
-
ANTIOXIDANT ACTIVITY OF FOOD ADDITIVES DERIVED FROM SECONDARY PLANT RESOURCES
DescriptionThe accumulation of free radicals in the human body in excessive quantities is one of the reasons that are known to cause many dangerous diseases and aging. To reduce the negative impact of free radicals to the body is possible through regular consumption of food products enriched with nutritional and dietary supplements containing natural antioxidants such as phenolic compounds, vitamin C, vitamin E and β – carotene. Scientists of federal state budgetary scientific institution "Krasnodar research Institute of storage and processing of agricultural products" have developed a technology for production of food additives from secondary materials generated during the processing of apples and pumpkins. The article presents data characterizing the antioxidant and antiradical activity of food additives derived from secondary plant resources developed and known technology. It is established that the antioxidant activity determined by the amperometric method, and the antioxidant (antiradical) activity, determined by DPPH method, supplements, "Powder apple" and " Powder pumpkin" obtained by the developed technology, is almost 1.5 times higher in comparison with antioxidant and antiradical activity of food additives, obtained by known technologies, because of higher content of antioxidants in the developed supplements. It has been established that the expression of antioxidants and anti-radical activity of food supplements obtained from secondary resources on the developed technologies, can be positioned in a number of (descending): "Powder from the seeds of grapes" → "Apple powder" → " Pumpkin powder"
-
THE HARDWARE SOURCES OF THE AUTOMATION OF THE SOLAR WATER HEATING OF THE AGRICULTURE PLANTS
DescriptionThe article deals with the necessity of the uninterrupted control of the work quality of the solar heating system. The advantages of the microcontroller systems, which gave their evolution in the last years, are shown. The possibilities of the usage of the microcontroller systems for carrying the work quality control are shown. The electrical principal scheme of the system of the automatic control of the solar water heating which allow to control the work quality control are shown. The system was divided into interconnected parts. The methods of the temperature control by the electronic temperature sensors 18B20, water control by the optical pair with open channel and water quantity meter with the optical wheel, water level in the tank by the ultrasonic sensor of the distance and level of the solar radiation by the pyranometer are shown. The necessarily calculation of the geometric tank sizes and water velocity in the solar collector are carried out. The corresponding hardware resources of the PIC microcontrollers like hardware counters, timer with the ability to allow counting by the external signal (Gate Control), analog-digital converter and fixed voltage reference module are described. The algorithms of the control of the water temperature in the tank and the control of the filling the tank with the hot water from the solar collector are described. The methods of the transmitting information to the operator are shown. The advantages of the microcontroller control are described
-
Description
We have designed and offered a voltage quality analyzer that allows you defining relative deviation of voltage, voltage unbalance factors at zero and negative sequence. The device differs from the existing ones with simple design and circuit solutions; it has low price and the ability to conduct a continuous monitoring of quality indicators of electric energy