The paper provides information on the results of ordination analysis of Don basin steppes

Keywords: ordination, Don basin, steppes

At present an important role in solving energy conservation problem is assigned to thermal pumping plants (TPP). Using processes of evaporation and condensation of easily boiling liquid circulating in the system they extract low potential heat from environmental objects and provide heat supply for buildings, constructions, greenhousee and so on. Artificial sources of low potential heat for TPP of different capacity can be, for instance, ventilation air and exhaust gases, circulating and waste water,ground. Energy efficient reasonability of TPP use in the system of water disposal for the town of Novocherkassk in Rostov region is considered. Calculations indicate that there is a technical potential to replace a boiler house operating on expensive gas fuel and emissing into the atmospere more than 850 t of carbon dioxide - greenhouse gas - with ecologically clean TPP, one of which uses heat of waste water and the other - heat of ground.

Keywords: thermal pumping plant, renewable sources, energy conservation, evaporation, condensation, waste water, ground

The method of coding of the geometrical information is offered at the task of executive mechanisms on the basis of use of the set set of spatial primitive things and their orientation in mobile systems of co-ordinates. The method of a designation of geometrical models of mechanisms of robots is offered. One of advantages of the developed method of representation of geometrical models of kinematic chains, possibility of more exact task of a spatial configuration of manipulators by means of use of a considerable quantity of central points and various position of volume primitive things concerning a constructive plane is.

Keywords: Mechanisms of manipulators, geometrical models, virtual modelling of movements of robots

In this paper a modification of logic element DC LUT FPGA is proposed for the purpose of the acceleration of diagnostics. Simulation of proposed modification was performed in the system NI Multisim 10 by National Instruments Electronics Workbench Group. Evaluation of hardware costs is also given.

Keywords: logic element, DC LUT, FPGA, diagnosis, reliability

The article is described the environmental and economic feasibility of the use of fossil fuels on RDF. The opportunity of introduction of alternative fuels, as an essential part of maintaining a balance of market equilibrium in the competitiveness of the products of the company "Sebryakovcement". The calculation of potential possibilities of processing of waste RDF as a necessary component to maintain the balance of market equilibrium and competitiveness of enterprise "Sebryakovcement." Calculation of the potential waste in RDF

Keywords: alternative fuels, municipal solid waste (MSW), RDF, cement industry, environmental safety.

The atomic structure of bimetallic nanoparticles of Pt-Ag composition, which are the part of metal-carbon electro-catalysts PtAg/C, is studied by means of EXAFS spectroscopy using the suggested technique. These materials have been prepared by methods of consistent and simultaneous deposition of Ag and Pt atoms from aqueous ethylene glycol solutions of their salts with subsequent acid treatment. The values ​​of the structural parameters of the near environment of platinum atoms are determined. The nature of the distribution of components in nanoparticles is established. Cluster models of nanoparticles are constructed. The fraction of Pt atoms in the working shell and its dependance on preparation methods in each case are determined.

Keywords: Metal-carbon electrocatalysts, bimetallic nanoparticles, Catalysis, Platinum, X-ray absorption spectroscopy, atomic structure

In design and manufacture recently interest to a solving of problems of fluid-structure interaction  is constantly incremented. MSC.Dytran has opportunities of calculation of fluid-structure interaction. MSC.Dytran has found application in different fields for example in general safety analysis.In this article algorithms of fluid structure interaction , used in MSC.Dytran, are described. Analysis of one-contour geodetic domes under blast loads are described.

Keywords: visualization, computational model, geodetic dome, numerical modelling, blast load, pressure, stress.

As a rule, the information they have guides for fatigue testing geometrical designs, gives only the evaluation of the characteristics and design lay stock in several, and sometimes in tens times exceeds the tensile strength of the material. And saving of material, from the point of view of obsolescence, product should be developed on a certain resource. For details, which operate in the field of elastic deformations and calculated in operation for a given mode of operation should lay in the design of the guaranteed resource. To do this, for example, compensating coupling method is suggested, which is based on the calculation methods of CAD/CAM/CAE/CSE NX 7.5 and field tests considering the impact of technology of surface hardening. The character of strain in «elastic element» in NX 7.5. The calculations of the elastic element module «flexible body» NX 7.5, but due to the fact that the calculation is impossible to consider technological parameters of manufac-turing is conducted equivalent full-scale tests. Accordingly, designed and built a stand for equiva-lent tests. Finally, for comparison, is a computer simulation to calculate large displacements and complicated movements of the coupling. For this we used the application NX 7.5 «Simulation of kinematic mechanisms» with the attraction tools «Flexible body».

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

The article is devoted to modelling of process of decision-making in difficult systems in the conditions of total uncertainty. The problem is formulated on the basis of synthesis of concepts of the control theory and decision-making, the theory of fuzzy sets and the fuzzy logic, the theory of hierarchical multilevel systems, the utility theory and the theory of games. The given concept expands possibilities of the account uncertainty the various nature, typical to mathematical description of the surrounding validity. Problems of search of decisions in an fuzzy hierarchical control system are designated. The way of the description and finding of alternative decisions in multilevel difficult systems is offered in given article. The algorithm is based on information processing in the form of fuzzy intervals taking into account two kinds the politician conservative and aggressive on the basis of criteria «maxmin» and «minmax». The method of projection on individual interval is used for comparison of the fuzzy intervals presented on various dimension scales. The example showing work of algorithm of a choice of two groups of alternatives is resulted: optimistic and pessimistic on a level of hierarchies of the purposes in the conditions of total uncertainty.

Keywords: Difficult system; decision making, fuzzy interval, the control decision; total uncertainty

This article discusses current issues of modern use of the benchmarking system on the example of the clothing companies. Benchmarking is able to dramatically affect the economic and marketing activities of enterprises, as well as foster a constructive dialogue between business structures. Research results revealed the garment industry in the Rostov region, related to the type Brand Non-Recognition and Brand Recognition.

Keywords: benchmarking, comparative analysis, marketing environment, competitiveness, market conditions, the image.

This article describes a method for producing two-component nonisocyanate insulating foams and technology of its spraying on the insulated surface. It describes the device, which, along with standard equipment, includes principally new design of components pre-mixing chamber. Constructive solutions described in the article will allow using the compositions which have different time and temperature of curing than conventional PU foams.

Keywords: Keywords: spray foams, insulating foams, nonisocyanate urethanes, pre-mixing chamber.

The basic virtue of the sowing apparatus of an overpressure is possibility of conducting of sowing on the big speeds and with high uniformity of dispensing of seeds. But the processes occurring in the sowing apparatus of an overpressure at dispensing of seeds, are insufficiently studied. In the article one of stages of process of dispensing by the overpressure sowing apparatus - transportation of a unit seed by dosing elements of a seed disc is observed. The forces acting on a seed in the course of transportation with a dosing element of a seed disc are defined. The gravity, centrifugal force, force of air drag and pressure force of air refers to to them. The scheme of forces is presented. As a consequence of theoretical research dependence of magnitude of an overpressure in the seed vessel from key parameters of work of the sowing apparatus of an overpressure has been defined. Graphs of theoretical dependence of pressure in the seed vessel from diameter of holes and a seed disc angle of rotation are built. The analysis of the gained results allows to draw following conclusions. The increase in diameter of holes of dosing elements of a seed disc leads to considerable decrease of the pressure necessary for transportation of a seed. At increase in an angular velocity of a seed disc pressure necessary for the secured transportation of a seed is augmented. The increase in an angle of rotation of a seed disc puts insignificant agency on pressure in the apparatus seed vessel.

Keywords: seeds, transportation, dispensing, forces, an overpressure, a dosing element, a nominal diameter, dependence.

The analysis of electromagnetic processes of thyristor controlled voltage regulator consisting of triple-wound transformer with thyristor units is possible only by means of computer modeling. The synthesis of triple-wound transformer  by means of block diagram method is concerned here. As a platform for modeling use visual simulation package Simulink. Key assumptions in the development of nonlinear mathematical model of the transformer are generally accepted.

Keywords: three-phase transformer, thyristor voltage regulator, simulation, Simulink

The article concludes data about the technique of carrying out and results  of a small-sized energy saving grain flattening farm machine of researches on the firm inclusions admission, on productivity and thickness of a cereal product. Practical recommendations for the most effective operation of an offered grain flattening machine are provided.

Keywords: flattening, grain flattening machine, breast, private farming, feed nutrients

A model system was designed and test  trials of physical and mechanical characteristics of small – crystalline and granular flotation potassium chloride are studied. This model system allows to design storage and transportation  of fertilizers in bulk in railway wagons and it has the same static and vibrational load as real system. The effect of temperature and relative humidity of the air on hygroscopy of small – crystalline and granular КСl were studied. Furthermore the influence of static load, and time length  of compression process of fertilizing layer and parameters of static and vibrational load on composition of КСl granules were investigated. It was experimentally proved that the humidity increase (0,5 %) of granular КСl and the  increase of static load and time length  of compression process of product during transportation in bulk lead to increase of compaction degree and caking ability of product. Research of the influence of high static load (10-30 kg/sm2) and time length of compression process of fertilizing layer on caking ability and degree of compaction show that small – grained KCl has smaller degree of compaction and considerably higher value of caking ability in comparison with granular KCl.

Keywords: Potash fertilizers, storage and transportation, hygroscopy, caking ability, degree of compaction, commodity characteristics of fertilizers