In this paper, the task of territorial planning of road transport enterprises is considered, taking into account modern requirements for the development of the urban environment. Methods for solving problems of territorial planning using geographic information technologies are highlighted. The work identified the factors of placement inherent in this subject area and characterized by spatial, temporal, pragmatic characteristics. Given the spatial nature of the task and the input data, it is proposed to use geoinformation modeling as an effective means of solving problems, which are based on geodata. The model of a geographic information system is presented as a combination of a model of visualization and consideration of spatial distribution factors, including sets of production rules. This model also contains a block of regulatory data that regulates the process of land use and allows us to evaluate the suitability of a particular site. The process of visual analysis is described and the main elements of the visualization model are identified. The totality of the data components of the geo-information model makes it possible to take into account heterogeneous information, conduct its complex analysis and make better decisions.
Keywords: geoinformation modeling, spatial planning, automobile transportation company, visualization, location factor
The issues of violations of the terms of delivery of goods on the railway network are considered. The main reasons for the violation of the delivery time are systematized on the example of the North Caucasian Railway. The North Caucasian Railway serves the ports of the Azov-Black Sea basin and the consignees of the Southern region. Over the past 10 years, the volume of loading of export cargoes to the ports of the Southern region has increased by more than 47%. Despite the relatively high reliability of cargo delivery, a negative trend in the increase in financial risks of the company RZD was noted. An analysis of the claim work was carried out, in connection with the violation of the delivery deadlines. The issues of speed and delivery of cargo and empty shipments at the North Caucasian Railway are considered. The main reasons for the arrival of goods with broken delivery dates were: the receipt of wagons with broken delivery dates at the joints of the road; Excessive availability of wagons to ports and port oil depots; an increase in the number of passenger trains in the summer. Mechanisms for managing the delivery time in rail transport on the basis of logistics and information technologies have been developed. Expansion of the zone of logistics management of railways traffic to ports based on the use of information systems that allow monitoring of operational work, identify problems of the road network, will reduce the load on the infrastructure of the port roads, fulfill all budgetary targets, and obtain additional profit.
Keywords: Analysis, delivery time, reliability of delivery, railway transport, seaport, financial risk, transport services, competitiveness
The possibility of getting natrium-carboxymethylcellulose with given viscosity from different raw materials for oil industry is shown in the paper. The regression model, connecting rheological characteristics viscosity with parameters of the technological process is proposed. The program for IDE Microsoft Visual Studio medium which may be used for calculating Na-CMC synthesis parameters, providing the given in the frames of the technological process viscosity value, is developed.
Keywords: natrium-carboxymethylcellulose, rheology, viscosity, etherification, alkalinity
The article presents the results of a study of activated sludge, which purifies domestic wastewater from nitrogen compounds under conditions of low concentrations of dissolved oxygen in the bioreactor (concentration at the level of 0.2-0.7 mg / dm3). The studies were carried out in laboratory and semi-production conditions on the models of circulating aeration facilities. Research methods included optical, electron and fluorescence microscopy, laser diffraction method and real-time polymerase chain reaction method. As a result of research, the composition and condition of the main indicator microorganisms of activated sludge, the structure of floccules of activated sludge, including the distribution of sizes of floccules depending on various technological conditions of the process, the cause of filamentous swelling of activated sludge in cases of disturbance of the system’s stability, as well as the number of functional bacteria genes archaea associated with the processes of nitrification and denitrification. Separately, research was carried out on the sedimentation properties of activated sludge, which includes the determination of sedimentation rates of activated sludge under the conditions of the mutual influence of floccules and biofloculation potential. Studies were performed both for experimental activated sludge, working with simultaneous nitrification and denitrification with low concentrations of dissolved oxygen, and for the control nitrifying activated sludge, taken from existing treatment plants operating according to the traditional technological scheme of denitrienitrification.
Keywords: nitrification, denitrification, activated sludge, aerotank, oxidation ditch, biological treatment, domestic wastewater, low oxygen treatment method, energy saving, resource saving, ecology
The paper summarizes the analysis of a variety of foreign and national scientific publications focused on the topic in question. It explores the opportunities to use modular structures, especially three-dimensional modular units as a part of superstructure for building reconstruction. The point is made that the use of transforming three-dimensional modular units helps considerably reduce transport costs. Despite a number of drawbacks inherent in modular units, the use of three-dimensional counterparts is suggested to be viewed as one of the promising ways of accomplishing energy efficient reconstruction.
Keywords: superstructure, modular structures, three-dimensional units, efficient reconstruction
The article gives an overview of the ways to utilize the heat of the boiler exhaust gases. In conditions of actualization (both technical and economic expediency) of application of technologies for fuel economy and environmental protection, the use of aggregates based on the internal combustion engine and microturbines with the utilization of the heat of the cooling system and exhaust gases has found application. Deep cooling of combustion products of natural gas both in boilers (condensing boilers) and in special condensing heat exchangers (utilizers) makes it possible not only to organize the full utilization of the physical heat of the flue gases (the lowest heat of combustion of the fuel), but also to select the latent heat of condensation Water vapor. The coefficient of efficiency of the boiler-aggregate will be increased in this mode by 8-12%, provided that the boiler operates in the optimal mode. Cooling of combustion products also reduces the content of nitrogen oxides in flue gases, incl. With the use of heat pump plants. The efficiency of the implementation of projects for the installation of condensing heat exchangers depends to a large extent on the number of hours of operation at maximum capacity in the mode of deep utilization. In this connection, we propose a variant of optimization of the boiler room thermal scheme with the heat recovery of the flue gases.
Keywords: Heat recovery boiler, boiler house thermal scheme, optimization, boiler, flue gases, heat generating unit
The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.
Keywords: velocity of crack propagation. Gorilla Glass, fast fracture, Sapphire, displacement of deformed bodies,
The article considers the way of organizing the process of material drying from organic solvents. The typical kinetic curves, observed in the evaporation of solvents. Given received and the recommended equations for calculating the evaporation intensity and the surface temperature of the evaporation in the first period. The analysis of major scientific and technological problems arising in the implementation of new drying technologies.
Keywords: modeling, calculation, drying, solvent, kinetics, evaporation, energy saving
New highly-porous film materials were created based on NA-sodium carboxymethyl cellulose, modifyed by particles of AlOOH. Forming of covers happen as a result of relatively not high temperatures (for about 55 degrees of centigrades). A regression model was suggested which described interrelation between sizes of forming porouses in the film cover with its composition. The ability was shown to manage physical specification of the cover which named surface porosity by changing containing of AlOOH in the composition. It was shown up that porouses were formed sizes between 300 mircometers and 2500 mircometers in proccess of curing of the cover while containing of boehmite in the composition. It was discovered that the general surface porosity was 65%, and the depth of cover was 600 mircometers. The ability was shown to create covers with sliding properties as exemplified in closing of pores by solid lubrication MoS2. It was discovered that it was observable down drag by 30-50% in response to application of covers on steel faces adding down of frictional force.
Keywords: Porosity, NA-sodium carboxymethyl cellulose, AlOOH, ntifriction material, MoS2, friction
An experimental study of two instances of low-noise amplifiers of the range 1.5-2.0 GHz is carried out. The following results were obtained: the amplification gain varies from 24 to 37 dB in the frequency range; the maximum output power was not less than 10 mW (10 dBm); the compression point of 1 dB is achieved with an input power of minus 16 dBm. To illustrate the measurement results, two amplitude-frequency characteristics and an amplitude characteristic of the second specimen are given. The main element of the studied amplifier is a chip of the type MAAL-007304.
Keywords: Microwave power amplifier, decimeter waves, amplitude-frequency characteristic, experiment, microcircuit
In article metallurgical production as the metallurgy is one of the main sources of technogenic environmental pollution and a working zone is considered. Authors have described the main sources of formation of fine dust by results of which the analysis of fractional structure of the dust particles which are allocated during the operation of the arc melting furnace has been carried out. The submitted data demonstrate that the dust coming to rooms of the shop has the sizes from 3 to 18 microns. The share of mass of particles with sizes less than 10 microns in air of the electrosteel-smelting shop makes from 15%.
Keywords: fine dust, disperse analysis, sources of formation of dust, steel-smelting furnace, metallurgical dust
The article deals with the use of enamel for concrete surfaces as a pile coating to reduce their frictional interaction with the soil of the foundation. Conducting tests and processing the results.
Keywords: piles, friction interaction, frictional force
The causes of death of people during a fire, as well as the effect of toxic combustion products on the human body are analyzed. It was found out that the main problem of unhindered evacuation of people from the building is blocking the evacuation routes by smoke. Methods of fighting smoke in a fire are considered and their advantages and disadvantages are determined. One of the ways to solve this problem is ultrasonic coagulation of aerosols with subsequent precipitation. Effective coagulation of smoke in a fire can be provided by a piezoelectric ultrasonic oscillatory system.
Keywords: fire, fire safety, multi-storey public building, toxic combustion products, smoke removal, smoke deposition, high intensity ultrasonic vibrations, ultrasonic radiation, acoustic radiator, piezoelectric ultrasonic oscillatory system
The use of higher aquatic plants (VVR) for water purification from various pollutants is an efficient system in wastewater technologies. For the development of bottom sediments of the river Temernik in Rostov-on-don it is proposed to use remotely operated underwater suction dredger, eliminates the secondary pollution of water. The project of the new landfill for disposal of bottom sediments is a waterproofing geomembrane Blackline TFS on the basis of high-pressure polyethylene and low-density LDPE. In the ""Target environmental program of improvement of the water basin of the river Temernik"", envisages clearing the riverbed with a length of 2 km, construction of disposal site sediments (PSDO), the establishment of biomodule with water hyacinth. During wastewater treatment water hyacinth decomposes and oxidizes industrial and organic sewage into simple elements and absorbs them as nutrition.Long massive root of water hyacinth absorbs heavy metals, oil products, phenols, synthetic surface-active substances (surfactants) and other substances.
Keywords: testing, toxicity, sediment, hyacinth, heavy metals, oil products, geomembrane, polyethylene, degelmintizatsiya
This work is devoted to the automatic generation of verification sets of test procedures; the proposed and developed algorithm for selecting trial solutions for solving the problems of satisfiability of Boolean formulas.
Keywords: test sets, automatic generation, solver, Boolean constraints