The article considers the device for experimental and laboratory testing of microclimate systems. The device is an experimental setup in which it is possible to study the microclimate parameters of multi-functional and multi-level buildings by modeling various processes and their location in the total volume of buildings. Accordingly, with the help of this test model, the parameters of the movement of contaminated air masses and convective flows are studied.
Keywords: test model, installation, microclimate, multi-functional multi-level buildings, process modeling, air, convective flows
One of the most important advantages of the ion lasers based on the ion transitions of metal vapors and noble gases, is the high quality of radiation (high monochromaticity and coherence). However oscillation on each of active media takes place on restricted number of laser transitions. The purpose of this work is receiving a laser radiation at the same time on several quantum transitions in the wide range of wavelengths when using mix of several active mediums. That increases a set of the laser lines radiated by one laser. The characteristics of ion laser transitions (gain, power, noise level) are substantially improved if a hollow cathode transverse-type discharge is used for pumping of the laser transition, and such method of a pumping was used in this work. It was experimentally found the discharge conditions providing various ratio of laser output power on various laser lines for laser on mixture of helium with cadmium and mercury vapors in which the population inversion and laser oscillation are carried out on mercury ion transition with the wavelengths of 615nm (red), and on cadmium ion transitions with the wavelength of 533,7&537,8nm (green) and 441,6nm (blue), and also for laser on mixture of helium with mercury vapors and krypton which lasing on 431,8nm and 469,4nm blue-green krypton ion lines and 615nm red and 794,5 nm IR mercury ion lines. The studied lasers can be useful at information processing, in a metrology, etc.
Keywords: ion metal vapor laser, hollow cathode discharge, the combined active media
Numerical solution to the problem of heat transfer in boundary layers transparent Strip on the walls, exposed on the opposite side of the radiant-convective heating. Study of influence of mode parameters on heat transfer process of tasks carried out in the case of the gradient flow and included the most typical variants of transportation processes. The purpose of the real work is studying of processes of transfer at non-linear boundary conditions, obtaining approximate and analytical decisions non-linear warm and a mass transfer, establishment of communication between regime parameters and physical interpretation of results of a research. Also some conjugate problems of heat exchange in the presence of radiation are studied. The analysis received decisions is carried out. The executed research allowed to establish that existence of a transversal overflow of heat in a wall and also the radiation of a surface have significant effect on the nature of distribution of the surface temperatures.
Keywords: boundary layer, convection, radiation, gradient flow, conjugate heat transfer
The project for creation of the first in Russia Engineering Forum of scientific and technological activities, social and technological entrepreneurship “Rozmysly” is presented, this forum develops the principles of an open public interdisciplinary electronic environment. The substantiation of the social significance of the project is given. The new project implies involving an even wider range of practitioners, research engineers, young scientists, applicants, graduate students, students and even senior pupils in scientific engineering knowledge by providing them with the opportunity to publish, read and discuss the results of promising research and development works, engineering solutions, inventions and rationalization or innovative proposals in the form of an electronic preprint. Conceptually, the project represents a new culture of scientific publications based on global and mini Internet platforms. It is shown that the basic advantage is achieved through the implementation of an open access initiative. From the date of publication, the material is available for the widest possible range of readers. The project is a kind of an interdisciplinary scientific and technological engineering forum.
Keywords: site, Internet platform, engineering forum and storage, open access, preprint, foresight
Numerical solution of the problem of heat transfer in the boundary layers of transparent gas wall, exposed on the opposite side of radiant-convective heating. The energy dissipation due to viscosity is negligible, the wall is thermally thin, and the physical properties of the medium do not depend on temperature. The aim of this work - finding the local heat transfer coefficients (Nusselt number) needed for the analysis of heat exchangers. When solving the problem of nonlinear transfer functions linearizing method is used, based on which numerical scheme for computer calculations was constructed. The intensity of the local heat transfer in the boundary layer is determined by the number Kx = Nux / Nux0, where the value Nusselt numbers refer to the conditions under consideration of the problem of heat exchange (Nux) and constant surface temperature (Nux0). From a physical point of view, non-dimensional parameter Kx is a measure of the intensity of heat transfer in the boundary layer on a nonisothermal surface compared to heat transfer when the wall temperature everywhere the same. The analysis of this research showed that in radiative-convective heating number Kx on the front edge of the plate takes the largest value of Kx ≈ 1,37 corresponding to a constant heat flux on the wall. It is also shown that the relative temperature of the incoming flow has a significant impact on the value of Kx. The effect of this setting is especially evident in the processes when dominated by the effect of radiation and related to the nonlinearity of the transfer processes. The analysis revealed the influence of basic parameters of heat transfer on the development of transport processes in the boundary layer by heating radiation and convection simultaneously.
Keywords: Boundary layer, convection, radiation, radiation-convection heating, high temperature gas invironment, linearizing function
In this work, the impact of the impact of the loads on the work of the optical system of landing the aircraft on the deck of the ship is studied. The influence of a shock pulse from the landing gear of an airplane during interaction with the deck is considered. Also the deviation of the light beams of the optical landing system and the making of constructive solutions for ensuring the required values of the beam deflection are estimated.
Keywords: impact pulse, optical landing system, automation of optical systems design, reduction of light rays deflection
Providing the claimed performance characteristics of the absorber throughout its life is the most important task that ensures the correct operation of the coupler. Increasing requirements for increasing the speed of movement and the volume of freight traffic make it urgent to increase the reliability of the absorbing apparatus by improving the design of its components and components (housing, friction plates, wedge, etc.).
Keywords: Absorbing apparatus, friction plate, cermet, surface wear, defects in absorbing apparatus
The method is considered for seaching a single-phase or three-phase electricity meter with the radio control module installed in it. With the help of this module, the consumer of electric energy has the opportunity to disconnect the pecking motor of the electric meter. These actions are allow you not take into consideration actually consumed elecrtrical energy. This module is installed by the consumer illegally and when a network organization detects this , they make an act about unaccounted electric power consumption. The method is based on the measurement of the intaking power of the volt circuit by the maser gage CE601 of the analyzing counter of electrical power CE 101, with the mechanical counting mechanism. Herewith, the consumer's loading is switched off by supply feeders. This method is allow to draw the conclusions about the presence of embedded non-factory devices without disconnecting of the electricity meter from the network ( time saving ).
Keywords: Electricity meter, loss of electrical energy, consumption analysis, commercial losses, electricity accounting
In this day and age the application of scientific and engineering inventions may further an effective solution of import substitution and increase in labor productivity. Invention is a new technical solution, having essential differences and a positive effect (new technologies, designs, substances). For instance, the technical result of the invention ""The production method for wire reinforced composite (RU 2619606)"" is the increase in durability of the reinforcing net due to the increase in binder adhesion to the bars, increase in thermal resistance of the net, and the use of simple production equipment. Practical implementation of this invention makes it much easier (unlike its prototype) toproduce wire reinforced composite under the conditions of a specialized enterprise. At the same time it becomes possible to solve a problem of connection durability and thermal resistance of a ready-madenet as in this parameter net connections go near the concrete. Specialists are also interested in the results of the following inventions: self-propelled, self-sustainable unit to clean water reservoirs from water grass (RU 2612445);chiseling method for low permeable soils (RU 2619289); application method for melt water (RU 2619759); erection method for in-situ reinforced concrete construction(RU 2618552); method to increase water-repellent properties of felt materials by means of hydrophobic nanoparticles of silicon dioxide (RU 2579207), mobile foundation (RU 2617826); root and onion lifter (RU 2618322), production method for glass goods (RU 2597419); automatic water intake for underground spring water extraction (RU 2617273), etc.
Keywords: invention,production method for wire reinforced composite, unit to clean water reservoirs from water grass, chiseling method for low permeable soils,production method for glass goods
In this paper we investigate the signal delay in interconnection based on carbon nanotubes. The analysis of the electrical parameters of the equivalent circuit interconnection and the dependence on the length of the delay of the signal beam nanotubes. Define a set of parameters that characterize the features of the functioning of the carbon nanotubes as interconnects. Compiled by the equivalent model of the interconnect based on carbon nanotubes and determined it electrically. Based on the functions of the signal at the output of the interconnect simulated signal delay in interconnection.
Keywords: Nanotube, delay, signal interconnect circuitry
A small operational technology of potato postharvesting treatment is suggested to use. A device for a separation and clod table of processing are worked out to increase the safety of potato at storage.
Keywords: potato, device for a separation, storage
he article analyzes the different forms of integration and cooperation of industrial enterprises from the standpoint of the possibility of capitalization of their resource potential. Under-cap resource potential refers to the process of institutional modernization resource binding interactions of subjects for the growth of economic potential, both the subjects and formed or integration structure. Sources allocated resources capitalization growth industry. The main directions of the capitalization of resources for industrial enterprises operating in the composition of the integrated structure. It is shown how to attract more participants interaction (financial institutions, research organizations, government agencies) promotes the growth of capitalization. Proposed indicators to measure the level of capitalization of the resource potential of integration structures. It is concluded that the choice of form of integration cooperation should be defined as the interaction of the participants goals and objectives of regional development. The article is intended for a wide range of readers
Keywords: industry, market capitalization, innovative capacity, integration cooperation, modernization, a synergistic effect of non-commodity development
In clause the opportunity of use balloon cable system descent to transport operations in remote mountain conditions is described. Dependence of system on wind influences is reflected. Proceeding from this, the design procedure of dynamic pressure which arise in the top suspension bracket of system is resulted, in view of mobility of a balloon under action of a wind. The technique allows to estimate the pressure arising in the top and bottom points of a suspension bracket at change of force of a wind, lengths of a suspension bracket, a corner and speed deviation of a balloon.
Keywords: Cable balloon system, timber transport operations, fluctuations of a rope, dynamic pressure of a rope
The article analyzes the demographic dynamics and settlement communities in the North Caucasus regions and territories of the South of Russia in the post-Soviet period. Fixed basic forms, directions and scope of migration, as well as gender and age structure of some communities. Understands the complexity of the interaction of host South Russian ethno-cultural communities and the North Caucasian diaspora, explores the peculiarities of "Slav-North Caucasus" etnokonfliktnogo capacity in urban areas and rural regions of the South of Russia. Outlines possible prospects of development of the North Caucasian communities within the "Russian dance" South macro-region
Keywords: North Caucasian diaspora, South Russia, population distribution strategies, migration activity,ethnocentric potential
The article analyzes the population dynamics, habitat settlement in the Rostov region of Ukrainians and Armenians, representing two major regional diaspora. We study their complex demographic and spatial relationship in the post-war decades, and in the post-Soviet period. The reasons rapidly declining regional Ukrainian community in the late twentieth century - beginning of the XXI century. Predicted the most likely scenario, the demographic dynamics of the two diasporas in the coming decades, examines the role in this process of modern Ukrainian crisis caused by the influx within the scope of large numbers of refugees.
Keywords: Ukrainians and Armenians, regional communities, and the number of resettlement, ethno-cultural structure of the Diaspora