The phenomenon of buckling under the creep of concrete arches was investigated. Solution of the problem carried out by means of the finite element method. To analyze the stability we used Newton-Raphson method. It has been established that there is a long-term critical load, beyond which the growth of the deflection has not fading character. As the equation of the relationship between the creep deformation and strains we used viscoelastoplastic hereditary model of aging concrete. To determine the creep strain we used a linear approximation with respect to time. It was found that the long critical load for considered arch was in 1.44 times lower than the instant critical load.

Keywords: reinforced concrete arch, stability, creep, geometric nonlinearity, finite element method, Newton-Raphson method

In article the essence of business activity as economic form of realization of economic activity is specified. The role and value of an indicator of profitability in business activity is revealed.

Keywords: business, businessman, profitability, efficiency, productivity

Due to a significant increase in stress effects on humans at the present time, there is a need to develop methodologies to optimize its functional state. The aim of this study was to search EEG correlates to define the permissible limits of the reserve functional state. The study was used the author's P-adic model of the trajectory transitions psychophysiological States. The study was conducted on 20 male students of the specialty " physical culture Taganrog Institute named after A.P. Chehova sessions free breathing. Removal of biological information produced by the international system "10-20" monopolar scheme on 8 leads (Fp1, Fp2, N3, N4, P3, P4, O1, O2), on the basis of computer EEG system "Kompakt-Neuro" (developer - scientific-medical firm "Neurotech"). These studies showed that paroxysmal activity can act as an EEG correlate of the permissible limits of the reserve functional status, beyond which begin serious pathological processes.

Keywords: electroencephalography, epileptic, the reserves of the organism, altered States of consciousness, extreme conditions.

An analysis of snowplows in urban environments. Determined that the efficiency of snow removal from roads, sidewalks areas affected humps (bumps), borders, etc. In line with this analysis of structures working bodies (dumps), used in Russia and abroad, as well as analysis of patents. In accordance with the foregoing, all decisions on the management of blade can be divided: extra lever systems; modernization of hydraulic drive; use microprocessors; the combination of these approaches. Obviously, the use of processor technology is justified for high-tech machines, as a consequence has disadvantages in price, qualification of operators and maintenance personnel. For the modernization of existing equipment, at the moment, it is advisable to use the combined system using the lever and hydraulic drive systems. It is necessary to take into account the energy-saving technologies.

Keywords: snow machines, blade, blade control automation, snow removal from roads, blade control, energy conservation, resource conservation

Now the technical condition of residential buildings 60s buildings has reached a high degree of wear when you want to repair their mass implementation of energy rehabilitation of housing and upgrading. This scientific article describes the organizational and technological features of the energy rehabilitation of housing built in the 60s of XX century. The article describes the main types of series of houses built in the period of their technical features of buildings energy efficiency class of buildings. A model of information resource and technological ensuring energy rehabilitation of housing, on the basis of which the selection of energy-efficient solutions of residential buildings at the pre-stage reconstruction or repair. The major elements of this system are the blocks of economic and technical evaluation of design decisions on the basis of which is determined by the most effective ones.

Keywords: organizational and technological support, the organization of repairs, energy conservation, energy efficiency

For the introduction of sycamore Spanish to in vitro culture most effectively used as explants cotyledonary leaves derived from a three-week seedlings. It is found that the optimal medium for the induction of callus formation is the MS medium supplemented with 2 mg BAP + 0.02 mg of 2,4 D + 0.2 mg IAA. Embryogenesis in callus cells of sycamore with a fairly high frequency induced on MS medium supplemented with 1 mg BAP + NAA 0.1 mg.

Keywords: Micropropagation, virus-free plants, Platanus hispanica, green building.

Industrial machines provide a current transformer coil winding round the circuit. The need arose at the plant in the winding coils of square contour and to enhance the technological capabilities of your machine will offer a special tool. It is installed on the machine by plates on which the whole device is fixed. Coil is based on the internal circuits. Winding spool carried hook-owned machine, while the coil is moved relative to the hook-spool path corresponding to the four crank curve λ-shaped hinge mechanism Chebyshev.

Keywords: coil, transformer winding, machine, device, plate, hinge mechanism, the shuttle-spool, crank

The article is devoted to the solution of problems of effective and safe management in the global scale of the space as a whole and in individual territories. The relationship of economic and environmental security of the world community can be characterized as socio-ecological and economic security, which characterizes the steady state of progressive development of society based on sustainable use and protection of natural resources as a basis for her life under the destructive influence of various external and internal factors. In addition, because the processes associated with security, in essence, are the management, we also need the presence of the subject, ensuring safety,which is considered the productive sector of the economy of each state. The purpose of eco-economic system of environmental management in the global community is the environment in the development of mutually beneficial political and economic relations between .

Keywords: environmental safety, economic growth, international exposure, innovative-investment process, the system of nature management, efficiency, environmental and economic strategy

Long-range building materials with possible complex of desired properties are silicate-natric adhesive-based composites. One of effective ways to increase silicate-natric composites water resistance is using of modifying compounds containing polyad metals ions (Zn2+,Ca2+,Mg2+,Al3+). This paper presents some patterns of silicate-natric composites structuring with ethanoate zinc as a water solution. There are results of X-ray phase analysis of silicate-natric composites sample. X-ray phase analysis (XPA) was held with diffractometer проводился на дифрактометре DXGP-4 using X-ray tube with anode copper (Сu-K излучение). For analyzing XRD patterns date base PCPDFWIN, v. 2.02, 1999, (JCPDS) was used. It is clear that as a result of sodium silicate and ethanoate zinc water solutions interaction in optimal range zinc salt is fully under alkaline hydrolysis. It is also highly likely that this interaction produces supplementary compounding sodium acetate, at the initial stage, and various forms of zinc orthosilicate and hydrooxyde, characterized as insoluble and low-soluble compounds respectively, that promotes water resistance increasing of studied composites, when low-baked (110°С). In terms of researches compounds of various profiles are developed and recommended (heat-isolating, heat-isolating-constructive, constructive) with high functional and operating characteristics).

Keywords: liquid nitric glass, ethanoate zinc, modifying, alkaline hydrolysis, zinc orthosilicate, zinc hydrooxyde, sodium acetate, cushioning parameter, water resistance, silicate-natric composites

In article the comparative analysis of various versions of circuitry solutions of realization of devices of registration of ionic current, is made, theoretical justification of almost known advantages and shortcomings of the considered devices. In article are given the experimental data obtained at registration of a signal of ionic current by various devices. Is made processing of oscillograms and shown qualitative advantage of the device of registration of ionic current with the stabilized boost converter for the solution of problems of registration of a signal of ionic current with increased requirements to quality of a signal.

Keywords: internal combustion engine, signal of ionic current, energy, spark discharge, device of registration

The features of the formation of composite coatings deposition layered matrix with alternating layers of nickel and copper by chemical vapor deposition. It is shown that the deposition process is oscillatory, detects the presence of polyvinylpyrrolidone, obrazuyuschegokompleksnye connection with copper and nickel.

Keywords: composite coating, chemical vapor deposition, nickel, copper, polyvinylpyrrolidone, oscillatory deposition process, the complex compound of nickel and copper

To create in Rostov-on-Don, ecologically effective, technologically advanced and durable green plantings to solve the problem: 1. Create a variety of trees for landscaping cities and towns; 2. Determine the principles of green plantings, ensuring their maximum environmental efficiency. In the steppe zone of Russia should use the structure of the park, with a high proportion of dense plantings (400 trees per hectare) of long-lived trees of the first magnitude.

Keywords: biological recultivation, small rivers, bottomset beds, assortiment of woody plants, Rostov region

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.