In the present study, platinum was electrodeposited onto rotating disc electrode coated with Vulcan XC-72R Nafion suspension and uncoated smooth glassy carbon electrode from acidic solution of 5mМ H2PtCl6. The electrochemically active surface area of platinum particles obtained was determined by cyclic voltammetry and the structural characteristic of the particles was studied by scanning electron microscopy. The impact of current and time on the electrochemically active surface area of platinum particles electrodeposited on the carbon supports was also investigated and described in this paper. The present work is expected to be utilized and contribute to the improvement of electrochemically active surface area of platinum catalysts for low temperature fuel cells.

Keywords: galvanostatic electrodeposition, chronopotentiometric curves, chloroplatinic acid, vulcan XC-72R, fuel cells

The authors, based on the study of historical materials, analysis of architectural solutions constructed buildings, as well as the design of local architects, associate a symbol, Nalchik - a Shoe with his name. On the basis of various examples show the use of the symbol of the city - horseshoe as an architectural element (image) buildings and structures (entry sign, in Nalchik, the architect W. H. Carter; project stables Nalchik Hippodrome, architect W. L. Aliev; the reconstruction project of the shopping center "Nalchik", architects design Studio "KabBalktelecom"; project Newsstand, in Nalchik, the architect W. L. Eliev). The authors emphasize a pretty bad use of the symbol of the city horseshoe in the reconstruction of the shopping center "Nalchik": designed space-sham construction on the corner of the building facing the intersection of two main avenues, Nalchik, etc. to them. Kuliev, etc. to them. Lenin. In the final part of the article the authors recommend local architects often prinosit national motifs (based on the rich national culture of the indigenous peoples inhabiting the Republic) in the development of their projects, and to use the symbol, Nalchik is a horseshoe, as the architectural tectonics in the projected buildings.

Keywords: the symbol of the city, horseshoe, architecture, entry sign, architectural composition, race track, shopping centre, Newsstand, ornament.

The influence of mixing method of isoprene rubber with nanofillers on the properties of nanocompositions is investigated. It is shown that (Super deep penetration) SDP method is more effective than mixing of components in melt.

Keywords: Super deep penetration, montmorillonite, wollastonite, nanofillers.

Intensification of agricultural production involves a large – scale use of fertilizers, plant protection means against pests, diseases and weeds, all those are used within various modern agro-technologies, which leads to soil intoxication with residual amounts of pesticides and agrochemicals. Therefore, a comprehensive approach is necessary for preparing the soil for further sowing. We have carried out the research using activated carbons obtained from agricultural residues.

Keywords: detoxication, pesticide, toxic substance,active carbon, nanomaterials, (nano)chips, pre-sowing seed treatment;growth, development, the incidence of plants, the quantity and quality of their crop

In this article is reviewed the nature of organic hybrid nanocomposites. Promising directions in the field of organic hybrid nanocomposite materials will be methods for the synthesis of multicomponent materials, as well as the type of "net net" and "host-guest". The fundamental problem with the chemistry and physics of nanocomposites is dependent "structure-property". Solving this problem will move from research materials to their purposeful design.

Keywords: nanocomposite sol-gel technology, synthesis, nanoparticles.

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

Keywords: ordination, Don basin, steppes

installation and the results of 2 years field experiment, experimental data on the effect of presowing treatment of seeds carrots laser on yield and its structure, as well as the safety of the crop. The research results confirm the positive influence of the pre-sowing seed treatment with laser on increasing productivity of carrot and can be recommended for use in the technology of cultivation. The possibility of regulation of the microclimate of vegetable store in the storage conditions carrots with the application of electroaerosol. The material has both scientific and production concern.

Keywords: carrots, laser processing, productivity, multiple-factor experiment, field experiment.

In this paper, based on the Navier-Stokes equations , the continuity equation , taking into account the pressure dependence of viscosity , Darcy equation taking into account the dependence of the permeability of the porous layer of the pressure given by the exact method of forming a self-similar solution of the problem of calculating the hydrodynamic journal bearing operating at three-layer lubricant . As a result, found the velocity field and the pressure in the lubricating layer and the analytical expressions for the components of the supporting forces and friction. Found rational bearing capacity values ​​characterizing different aspects of the functioning of the knot of friction , namely profile support surface ; special lubricating fluid interaction with the surfaces of the friction unit , taking into account the pressure dependence of viscosity ( the formation of intermediate layers with different lubricant viscosities ) .

Keywords: three-layer lubrication, maintenance force adapted profile stratified flow.

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

This article investigated the possibility of creating a new composite material for electrical products based on natural graphite as the main component with the addition of a plasticizer . Adding plasticizer necessary to solve technological difficulties pressing process products with a high content of natural graphite . This is due to large shear between the interphase graphite flakes . As the plasticizer used polyvinylacetate . The paper presents the technological aspects of production material and study the influence of the plasticizer on the composition, both qualitative and quantitative . Conclusions about the most appropriate ratio to the amount of graphite esmestvennogo adds plasticizer.

Keywords: Еlectrotechnical products, softener for graphite, composite material, copper-graphite composition, tokosjemny material, current collecting Box, рolyvinylacetate, modification of the surface of graphite.

History share of insurance business in the Province of the Don, the characteristic four stages of development process, the analysis in general and the specific activity of sixteen joint campaigns, including foreign, on the Don in the late XIX - early XX centuries. ("New York", "Urbain", "Ekvitebl"). The social composition of the policyholders, insurance forms discounts logic of competition  

Keywords: insurance organization of insurance business corporate insurance insured event insurance discount insurance premium insurance rates insurance capital

The article describes the research of thermodurability of glass-carbon - one of the most promising carbon materials used in the production of luminophors and semiconductor materials, optical single crystals, etc. The aim of this work was to study the behavior glass-carbon in the course of thermo-cyclic testing. As a method of diagnostics of the birth and development of micro-cracks was used by the reception of signals of acoustic emission. It is shown that at heating in the samples glass-carbon there was a strong movement of dislocations in thermocyclic effects ,recognized in the signals of acoustic emission. As the number of pulses when heated above, than during the cooling of the sample, it is evidence of the accumulation of damages in the structure of the cyclic thermal processing glass-carbon samples. It is established, that the curves of the accumulation of defects at the pulses of acoustic emission, differ on the stage of heating and cooling. Proposed to use the curve of the aggregate accounts of acoustic emission pulses as a possible harbinger of destruction when heated glass-carbon of the product.

Keywords: acoustic emission, electrodeposition, the activity of the AE, the remote control.

In the article describes the program realization of calculation unit pneumatic measuring system. The program is implemented in the languages ​​of IEC: CFC and ST. Algorithm written with the possibility of future use in systems that differ from described in the article. The developed algorithm allows to measure temperature directly using computing power PLC and get the result in the final form, without any changes on the part of the operator.

Keywords: pneumatics, temperature, airflow, algorithm of temperature measuring, temperature measurement, Codesys, CFC, ST

The research of influence of periodical signal discontinuity on spectrum form is considered in the article. The numerical modeling of the system of discontinuous signals is performed. The spectrum of the system built from time discreet sampling is analyzed. The plots of the sample correlation coefficient between spectrums of continuous and discontinues signals are shown in the article. The research is needed for the development of digital measuring system for quartz plates frequency detecting.

Keywords: amplitude signal spectrum, discontinuous signal, quartz plates