Finding of small concentrations of various gases as an important task for the environment and for the industry. In this paper, investigated gas-sensitive properties of the films of graphene on silicon carbide to NO2 and vapour C2H5OH. The principle of operation of graphene sensor based on the change of electrical conductivity by reason of adsorption of gas molecules. Temperature dependence of the gas desorption from the surface of graphene is obtained. Mode of getting graphene films with the best gas sensing characteristics is defined. The obtained  results suggest that graphene is a promising material for gas-sensitive sensors  

Keywords: graphene, graphene films on silicon carbide, gas sensor, gas-sensitive of graphene

In article gasdynamic approach for the solution of a task on heat distribution in simple gas pipelines on the basis of consideration of a current of gas in a laminar mode is considered. The objective is solved by means of research of system of the equations of work of extending gas taking into account an assessment of difference of temperatures at explosive decomposition of a working product. Classical approaches to research of distribution of heat in a simple cylindrical pipe are thus taken as a basis the main dependences characterizing both full, and the current work of a working product by means of correction coefficients and a ratio of temperatures of heating of walls Are presented. Connection between pressure is established at different weight ratios of gas. The specified approach can be used as a technique of model research of gasdynamic processes taking into account a thermolysis in gas pipelines.  

Keywords: thermolysis, gas pipeline, gas work, temperature, pressure

This article focuses on the analysis of guality class and evaluation of strategies of organizational development. It was determined that the relation of the competitiveness at enterprise depends on product quality and services. It was offered the strategy of quality which permits to achieve a market leader in modern conditions

Keywords: quality, competitiveness, strategy of quality

A hybrid reverberation algorithm is offered in this article. This algorithm is using both a convolution section in which a convolution with an inmpulse response of a real acoustic room is being implied and a mathematical reverb model. Also an algorithm for generating impulse responses of optional rooms is also offered in the following article. The algorithm efficiency calculation is  specified in the article. Thia reverberation algorithm is a part of a bigger complez auralization algorithm where it is being used coherently with an HRTF-based algorithm in order to simulate a real acoustic environment  

Keywords: artificial reverb, room simulation, convolution algorithm, impulse response convolution, impulse response synthesis, dynamic convolution, complex filtering

The target of the article consists of explore methodology of the program ARIS and modeling business process of building company. We reviewed how you can visualize and detail any process by the instruments of the ARIS. The most important thing that you can improved performance of your business if you use methodology of modeling business process. This program help to do your activity more understandable for analyzes and future prognoses. By the instruments of the ARIS you can imagine different variants of realization project events

Keywords: building company, business process; modeling; methodology of the ARIS

It is noted that the services sector in the Rostov region isn't always accompanied by due quality and availability. Major factors which will affect dynamics of development of a services sector are defined. Dynamics of volume of paid services in subjects of the Southern federal district is analysed. The conclusion is drawn that the greatest possible ensuring requirements of the population of the region of the Rostov region in services of high level demands the unconditional solution of actual tasks which are also presented in work.  

Keywords: services sector, tendency, development, quality, dynamics.

Considered part of the software and hardware designed and manufactured the device for the automatic analysis of nonlinear parameters of high-temperature superconducting ceramics YBa2Cu3O7-x in variable magnetic fields. Shows the calibration and specifications. The new is a synchronous (the error in determining the phase of no more than 0.5%) of digital signal samples of the nonlinear response of the sample and the samples generated by an external magnetic field (the error is less than 1%), with the number of data samples per channel to 90 ∙ 106 12-bit samples and sampling 600 ∙ 103 samples per second. The reference range of variable magnetic fields 1 - 50 Oe, a frequency range of 1 - 50 kHz in steps of 1 Hz and the accuracy of 0.0291 Hz. The device has an interface to the computer via two USB-interface and original software to work with it. With the use of the device, a series of experiments designed to produce some non-linear parameters of cylindrical sample made of high-Tc ceramic YBa2Cu3O7-x. The analysis of the results and their comparison with the presented in the literature  

Keywords: Nonlinear medium, high-temperature superconducting ceramics, synchronous samples, harmonics, ARM-9 CPU, a differential sensor.

This article describes the method of application of the General совокупносте final volume instead of custom information in the calculation of fatigue life of parts. For descriptions of statistical regularities used вероятсностные laws with a shift. The parameters of Weibull distribution are graphically.

Keywords: the General totality of the final volume, the sample resource calculation, fatigue

In a modified version of the adaptive clutch size of the spacer strength decreases due to a reduction of torque, which transmits the additional friction group, including, for the maximum value of the friction coefficient. Therefore, to save the value of the brace force is necessary to increase the ratio usileniya.Predlozhena concept modernized version adaptvnoy clutch with a combined feedback based on the formalization of the distribution of power factors for the closure of the main steam friction of the friction and more friction groups, allows you to simplify the design of the coupling compared to the base case  

Keywords: the coefficient gain, a separate positive connection, the coefficient of friction, clutch, friction pair

The article describes the experience of the device of pile foundations under the multi-storey building in difficult engineering-geological conditions in Rostov-on-don

Keywords: Drilling piles, test, conductor pipe, sandconcrete, foundation

The influence of manganese nitrate impregnating solutions concentration and temperature dynamic viscosity, the wetting angle, interface “porous tantalum electrode - solution” free surface energy and the impregnation degree of porous tantalum anode was researched. A quantitative characteristic of manganese nitrate solution application on porous tantalum anode of solid-electrolyte capacitor during the process of impregnation was defined and work of adhesion and cohesion was calculated. Thus increasing of solution concentration above 42% wt brings to sharp growth of surface tension and so work of cohesion is increased but carriers impregnation is fallen. The most effective impregnation is realized at concentration 27% wt. This fact corresponds to best value of tantalum anode capacitor free surface energy. So using received data we are able to estimate optimal conditions of impregnation and wetting process by nitrate magnesium.  

Keywords: manganese nitrate, manganese dioxide, limiting wetting angle, free surface energy

Principle of operation of a Turing machine and its variations, including finite automata, is to read the data tape; such an organization is a direct analogy with the coding information biopolimers, wich in turm served as the basis for the creation of several DNA-based computers. Computer input device in the form of O-DNA created before, however, the input and output demanded difficult reactions, each of which require human supervision.

Keywords: hardware basis cascade limitations hybridization ligativny cycle, coding information, computer DNA, enzymes, molecular software

An overview of research related to the tasks of processing and filtering of signals. Signal is considered as a random process defined by probabilistic characteristics. This article addresses the issues of the history of the development of methods of signal filtering. Recent scientific publications in which the results and the main directions of research in the field of signal processing and filtering are analyzed. Presented material extends the current state of knowledge about the problem.

Keywords: signal, signal filtering, signal processing, stochastic process

The question of an assessment of emission of greenhouse gases from a water complex of housing and communal services is considered. The bundled software, allowing to calculate emission of dioxide of carbon from sewage treatment processes taking into account specific conditions of their course is created. Having defined specific emissions from concrete constructions and stages of transportation and sewage treatment it is possible to supervise and regulate processes of transportation and processing of sewage  

Keywords: emission of greenhouse gases, emission of dioxide of carbon, processing of sewage, bundled software, specific emissions

The necessity to improve the grinding process of building materials used in the construc-tion of roads using mobile mo-bile plants, based on the con-centration of operations on a single machine, a diagram of a fundamentally new developed systems for their implementa-tion

Keywords: Mobile installations, roads, cement-concrete mixtures, crushing and grinding equip-ment, mill dynamic autogenous grinding, two-mill dynamic autogenous, factionalism, energy