Due to the recommendation of the World Health
Organization, the standard rate of vegetables
consumption for a person per year is 130-150 kg,
including up to 15 kg of fresh production during the
off-season. To meet these standards in Russia, the
construction of greenhouses and greenhouse
complexes was sped up. To cultivate the bulk of
vegetables in the conditions of protected soil we have
mostly used winter greenhouses. At the same time, in
terms of the climatic conditions, the main production
costs are accounted for energy carriers (up to 60 –
70%). The main consumers of energy in greenhouses
are plants’ lighting and creation of the required
temperature conditions for plants and soil. Annual
increase of rates for energy carriers affects the cost of
the greenhouses’ production. To increase the energy
efficiency and independence in greenhouse complexes,
it is proposed to use installations based on gas
reciprocating units (GRU) for the production of two
types of energy – electric and thermal. Such
installations can run on the natural gas and other types
of fuel. The drawback of existing installations is that
they are mainly produced abroad or consist of the
foreign components. As an alternative, we offer new
technical solutions, which were developed and
patented in the Russian Federation. What makes these
solutions original is that asynchronous generators in
the installations are used with various control schemes
Now in different branches of the industry there is a need for the new equipment and mechanisms with the seized characteristics. Special requirements are shown to energetic and mass-dimensional indices of systems of electric drives as one of the main components of such devices. Mass-dimensional and energetic indices due to constructional features and the used management system will allow improving use of special or controlled asynchronous cascade systems of an electric actuator of cylindrical construction. One of the main difficulties is simulation and design of special systems of the electric drive. In this article, a new approach to determination of magnetic model parameters of the stator of a component of the controlled asynchronous cascade electrical drive of cylindrical construction is offered
The transportation process plays an important role in the
delivery of agricultural products to the consumer. On
how well the fruits are preserved, their grade will
depend, and, consequently, the price of them. It is
known, that the annual damage from losses of
agricultural products in the agro-industrial complex
amounts to 8 billion rubles, according to various
estimates. A large number of different factors affect the
safety of fruits during transportation: temperature,
humidity, smoothness of the vehicle, type of container,
etc. The more factors will have a negative impact on
fruit and vegetable products, the more losses will
ultimately be. The appearance of dents and abrasions on
the fruits gives rise to the formation of foci of rot,
leading to damage to the transported products, and, as a
consequence, reducing the grade. In order to reduce the
losses of fruit and vegetable products in the process of
transportation, the USSR and the Russian Federation
have been and are working on the creation of containers
and ways of transporting pomegranates. All of them, according to the authors, are able to reduce the dynamic
loads that arise during the transportation process and
have a negative impact on the transported products.
However, due to various circumstances in commercial
gardening all these developments have not been
extended
The article describes the synthesis and verification of
statistical and system-cognitive models of the
influence of environmental factors on the quality of
life of the population of the region. This stage of the
ASC-analysis is performed in the system called
"Eidos". As a result, we have created and validated
(verification stage) all the specified systemic cognitive
models. It is expected that reliability for the models of
knowledge is sufficiently high for a given subject area,
that is why we can state the discovery of a dependence
of life expectancy and causes of death from
environmental conditions. Typically, knowledge
models are approximately 20% higher in accuracy than
statistical models, which operate on the principle of
positive pseudo-prediction. Making decisions based on
the model of Abs (matrix of absolute frequencies) is
not appropriate because of the different number of
instances of classes (generalized categories) and
dependence of the solutions of this amount. In the
model called Prc2 (conditional and unconditional
percentage distribution) the dependence of the model
values of the number of examples in classes has been
removed, but the accuracy of it is usually same low as
in the Abs. In addition, for decision-making based on
this model, one has to compare the values of
conditional and unconditional probabilities manually,
which is laborious and hardly possible for large
dimensional models. The knowledge model called
Inf3, based on a measure similar to the Chi-square, is
the result of the automated comparison of values of
conditional and unconditional probabilities presented
in the model of Prc1, which is similar to Prc2, and
usually has a fairly high accuracy, especially
considering the high complexity of the subject area,
which we simulated. Therefore, in accordance with the
technology of the ASC-analysis data conversion into
information, and afterwards - into knowledge, it is the
model of Inf3 which is planned to be used for the
solution of problems of identification, forecasting, decision-making and exploring the modeled subject
area, through the study of its models
The aim of the study is to investigate the
regularities of deflection in the diagonal and radial
tires for the grain combine propulsions of high
productivity. The research method is experimental.
The "tire tester" and specially designed devices for
revealing the deflections of the inner and outer tube
relative to the rim in the circumferential and radial
directions have been used. The outcome indices of
the pneumatic-tired wheel are determined with the
tire capability to deflect so, that at low - hysteresis
losses in the rubber-cord casing and its acceptable
tensions, based on a resource, the largest area of
contact with supporting base would be created. This
circumstance acquires the particular significance
developing tires for grain combines of high
performance, the deflection regularities of which
are poorly studied at present. The analysis of
experimental studies showed the feasibility of using
the grain combine propulsions instead of the
diagonal radial tires of the same size. The resistance
to rolling of radial tires 30.5 R-32 is lower than in
diagonal tires 30.5 L-32, and the developed contact
area due to the increase of length is higher, which
reduces sealing effect on the soil
Development of infrastructure of Sochi as mountain resort has demanded increase in transport means of communication and development of territories, difficult for construction. Construction works cover territories of the Kudepsta and Adler districts and also Krasnaya Polyana. The main problems at design near Greater Sochi are landslides and landslide processes and also high seismicity of territories. Besides, the increased technogenic loadings on many sites have led exogenous processes to activization. At unforeseen activization of landslide processes it is required to develop actions for strengthening of the existing constructions or construction of new protective designs in the shortest possible time. However, there are problems of modeling of a landslide situation. On the example of construction retaining at the portal constructions of a railway tunnel near Sochi modeling of landslide processes on the basis of natural observations (monitoring) is considered and also actions for stabilization of slope processes are described
The article analyzes the ways of ensuring a stable quality and use of biopreparations patented in Russia and abroad. The most famous biopreparations developed by Russian scientists. The analysis of literature sources and patent information has show that the development of methods for storing plant raw materials with using biological protection means is actual. Research in the field of the use of biopreparations for the processing of agricultural products is of high practical importance, since they allow a significant reduction in losses during storage. The application of biological protection treatment technologies is the most effective, environmentally safe and economical way of preparing for storage of plant raw materials
To ensure the safety of food production of frozen dessert with the addition of sesame flour, the system of critical control points for risk analysis (HACCP) was applied to the manufacturing process. Biological, chemical and physical hazards that could exist at every stage of frozen dessert production have been identified. Critical control points have been identified that include pasteurization and milling. The introduction of the HACCP system in food production can effectively ensure the safety and quality of food products, expand the market and improve the level of management of producers
At present, much attention is paid to the production of domestic vegetable products. One of the main reserves of increasing the yield of vegetables is the production of products in sheltered ground. The intensive construction of new glasshouses and greenhouses complexes has sharply increased the demand for engineering facilities, with the help of which an artificial microclimate is created in the structures of the protected soil. To create high irradiations, a very significant specific installed power of photosynthetic radiation sources is required. Currently, advanced greenhouse plants use LED irradiation. The experience of these farms showed that LED irradiators have a number of significant advantages over discharge lamps: a significantly lower specific power of the irradiator; the service life of LEDs is several times higher; they do not contain toxic substances (mercury); LEDs are powered from a low voltage network, which is significant from a safety standpoint. Isolation of greenhouse plants from the effects of natural factors of the environment leads to undesirable consequences. The deficit of the amount of natural energy of optical radiation penetrating the structures of protected ground in modern industrial greenhouses during off-season is eliminated by additional artificial radiation from greenhouse lamps. In this case, the emission spectrum of lamps differs significantly from the natural one. This is especially true for ultraviolet radiation. The issue of creating an LED lamp for its application in structures of protected ground is considered. The main requirements for the creation of a photosynthetic lamp on the spectral composition of radiation are given. The necessity of a long-wave ultraviolet component in the emission spectrum of a lamp is substantiated
The technology of cultivation of most crops provides pre - and post-emergence weeding of crops, and their feeding with the availability of soil nutrients. According to the used underlying technology, these operations are performed separately. The harrowing of crops after germination is necessary for weed control, the destruction of the soil crust for access of air to the root system and partial thinning of dense crops. Further destruction of weeds on crops are herbicides, high-quality entry which provide sprays. The latter can provide small and ultra-low volume spraying in high performance and environmental requirements. However, separate execution of technological operations for fertilizing and harrowing reduces the quality of work, increases the cost of production. The proposed combination of technological operations on a harrowing of crops different crops simultaneously with feeding plants solid mineral fertilizers. The combination of technological operations for one pass of machine-tractor unit in the field provides a reduction of the fleet, its capital intensity, the energy, cash costs, and hence competitiveness of products. The studies proposed new technical support processes, technological scheme of the multifunctional unit to combine the operations of feeding and harrowing of crops