Now nanotechnologies are one of perspective methods of diagnostics in medical practice. Nanoparticles can be used as contrast agents for medical ultrasonic introscopy due to their adhesion to tumor cells and bacteria. The mathematical model of the laser excitation of acoustic signals in a liquid medium with the presence of the nanotubes was developed and numerically studied. Increasing of the level of photo acoustic signal was shown.

Keywords: Opt acoustic effect, nanotubes, and model

Discusses issues of modeling of thermal regime of soil in harmonious fluctuations in air temperature. Developed mathematical model to predict the temperature distribution. Is an example of the calculation for the summer mode  

Keywords: Heat pump, ground heat exchangers, numerical methods, unsteady mode

Reviews the current state of food security in Kabardino Balkaria

Keywords: food security in the region, the structure of the food processing industry, the consumption of major food

  The current stage of development of the sphere of telecommunications services is accompanied by a side effect - electromagnetic pollution. Until recently, the effects of hygienically significant levels of electromagnetic radiation (EMR) were subjected to only a certain number of people associated with professional activities. At the present time due to the powerful development of the telecommunications market in Russia is necessary to speak about the impact of EMR on the entire population. It should be noted that the growth of telecommunications services in Russia are far ahead of all forecasts. In this regard, there is an urgent need for monitoring the electromagnetic environment in the locations of radio transmission of technical objects.

Keywords: electromagnetic ecology, electromagnetic pollution, zones limits building, sanitary protection zones

The main directions of regional impact on the solution of a question of food supply of the population of the region are considered from the local regional budget.targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: food supply of the region, measure of regulation of food supply, structure of actions for regulation of food supply by local authorities

In the model aeration tank and pilot conditions, there are shown the effectiveness of ceramic aerators made of Artik tufa which is mined in the Republic of Armenia and determined technological parameters of biological and oxidative purification of waste water in the continuous and discontinuous mode of aeration. 

Keywords: aerators tuff, continuous and discontinuous mode of aeration, Artik field, biological and oxidative purification, waste water, process parameters.

The paper shows the feasibility of using a current amplifier in the filters RF and microwave ranges. By analyzing the basic structure of the second-order level sufficient conditions for the efficient use of active elements. The examples of methodological nature and formulated conclusions of practical importance.

Keywords: RF filter, microwave filter, parametric sensitivity, current amplifiers, functional modeline setting

It is considered the dependence of the operation mode of floor radiant panel heating systems depending on the design parameters for the internal air  

Keywords: panel-radiant heating, heat-insulated floor, parameters of the internal air

One of the problems when storing large amounts of data is a rational choice of media. In this paper we evaluated the possibility of using magnetic tape, CD, DVD, Blu-ray discs, hard disk drives, drives to flash memory (SSD) for storage of large volumes of data with respect to reliability, performance,.cost and high-speed storage. The analysis showed that solid state drives can be used in case of the need for ultra-fast access to live data. The hard disk drive can be used as primary storage devices for storing operational data. DVD and Blu-ray library can be used for archival storage medium volumes (tens of terabytes). Tape libraries can be used to store very large volumes of data (terabytes or more). The lowest cost of storing 1 GB of data is $ 0.03 when you use tape libraries. The most expensive storage 1 GB solid state drive ($ 0.85).

Keywords: storage devices, data storage, storage drive

The article is about generators of random numbers (GPN) constructed on points of an elliptic curve and algorithms of development irreducible polynomials over prime fields. It describes their advantages and main features. The authors analyzes the algorithm of development GPN constructed on points of an elliptic curve with using irreducible polynomials of degree three over finite fields. In this approach, calculations were made in the system of residual classes. According to the results of computer simulation shows the advantages of algorithm in speed and security of a cryptosystem.

Keywords: the generator of pseudo-random numbers, elliptic curve, system of residual classes, cryptographic security, irreducible polynomials

The state of the atmospheric air in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinsky over the last 10 years (2003-2012). Identified main pollution sources and priority pollutants. Analysis of the concentrations of pollutants in areas of concentration of industrial enterprises, on highways and in dwelling zones. It is established that industrial cities are specific «geochemical provinces», in which abnormally elevated concentrations of many chemical elements. On the background of the decrease of the role of industrial enterprises in the air pollution increases the role of motor transport  

Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution.

The state of surface water in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinskiy. Identified the main sources of their pollution and priority pollutants. Analysis of the concentrations of pollutants in R. Sowing. Donets river and its tributaries. It is established that the water management situation in the industrial cities remains unfavourable, and the level of water pollution is assessed as «dirty»  

Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution, water objects.

Considered original interpolation method of the working tool path using confluent two-unit manipulator. This method is based on the separation of the links on the master and slave and the use of polar coordinates to determine the incremental rotation of angle units. It is adapted for use calculating hardware with floating point.

Keywords: two-tier mechanism, circular interpolation, the kinematic model, floating point operations, the static accuracy of interpolation

Reviewed the status of groundwater in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinskiy. Identified the main sources of their pollution and priority pollutants. The causes of expansion spots dirty waters in the areas of industrial cities, education depression funnels. The conclusion about influence of a large number of technogenic factors on the change of the status of groundwater  

Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution, water objects.

In this paper a form of expression in the matrix to determine the unknown ratios in double rows, appoksimiruyuschih displacement of a point of the middle surface of the shell, which is used in calculating the shell variation-energy method  

Keywords: envelope variation-energy method, the minimum total potential energy of the system, movement, deformation.