a study of a ventilation system with a local recirculating diffuser was carried out. A three-dimensional model of the office space has been built. Using the STAR-CCM + hydrodynamic computing complex, a numerical simulation of the ventilation system has been performed. The calculation results are analyzed, the advantages of the investigated system are given.

Keywords: ventilation systems, local recirculating diffuser, indoor air quality, energy saving, numerical simulation, STAR-CCM +

In the article the features of application of logistic approaches of the organization of movement of the cable cars, as well as the method of selecting the cable car and the slopes at various characteristics of the operation of the complex. The results of experimental research on the network of cable cars of the mountain resort "Rosa Khutor"are offered. The paper uses the methods of monitoring the movement of passengers on cable cars by means of identification by ski pass and GPS

Keywords: transport mobility, route network, public transport, automated monitoring of passenger traffic, logistics approach, cable car, monitoring of cable car congestion on-line, traffic volume, digital transport management system

The universal computerised complex for determination of quality characteristics of a dispensing of seeds by the apparatus of precise seeding is observed. The processing method of loggable signals is presented. The observed complex, with application of a metering equipment and a processing method of the data, allows to size up quality of operation of the sowing apparatus of precise seeding. In particular to define allocation of feed of seeds to which refers to droppings, one-piece feeds, two-piece feeds and feeds of the higher order. Also by means of a complex registration of amount of dosing elements and total of the gived seeds for experience is simultaneously led.

Keywords: seeding, dispensing, sensor, registration, sound card, signal, dropping, feed, seeds, sowing apparatus

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.

In the article results of theoretical researches of the rotor scatterer of fertilizers are resulted. For elimination of adverse conditions shock interactings of particles of fertilizers with rotor vanes, possibility of application of curvilinear vanes is observed. The forces acting on a particle which moves on a curvilinear vane are justified. Schemes of act of forces and the scheme of interacting of particles of fertilizers with a curvilinear vane taking into account width of a torrent are presented. The transcendental equation numerical solution on a method the Runge-Kutty is resulted. The analysis of dependences of the kinematic operating modes of the scattering apparatus from design parametres of a curvilinear vane is carried out. The time of interacting of a particle of fertilizer with a surface of a vane taking into account its curvature and a slope is defined. Conclusions are drawn on possibility of lowering of crushing of particles of fertilizers at the expense of blow decrease in a normal direction.

Keywords: fertilizer, vane, rotor, curvature, angle of slope, speed, crushing

In this paper a systematic study of individual single-walled and multi-walled carbon nanotubes was performed by Raman spectroscopy and high-resolution electron microscopy. We have presented the geometrical and electronic structure analysis on the examples of two tubes: individual single-walled and double-walled nanotubes. The role of different environmental effects and their influence on the final structure assignment are discussed. Moreover, we have shown that the Raman spectroscopy gives reliable estimations of the nanotube diameters and the conductivity. Given a non-destructible character of Raman spectroscopy, we may conclude that it is one of the most efficient methods for structure analysis of carbon nanotubes.

Keywords: Carbon nanotubes, Raman spectroscopy, electron microscopy