The paper presents a study of the resistance of connections of load-bearing laminated wood structures using domestic melamine-urea-formaldehyde adhesives (MMFC) to cyclic temperature and humidity influences. The method of cyclic tests is described. An assessment is made of the resistance of MMFC to temperature and humidity influences and the compliance of the selected adhesive with the requirements established for the production of long-span load-bearing structures.

Keywords: melamine-urea-formaldehyde adhesives, wooden structures, resistance of adhesive joints to cyclic temperature and humidity influences, strength

The paper presents a study of the water resistance of joints of load-bearing laminated timber structures using domestic melamine-urea-formaldehyde adhesives (MMFC). The high relative strength of samples dried after soaking and boiling above that established for the increased water resistance group is shown. An assessment of water resistance for three formulations is given, the dynamics of crack growth due to the influence of the moisture factor of MMFC.

Keywords: melamine-urea-formaldehyde adhesives, wooden structures, water resistance of adhesive joints, strength

This article presents the results of a study of the tendency of composites based on magnesium oxychloride cements to deformation changes. The dependence of the degree of deformation of light magnesian concretes on the conditions of their hardening has been determined. The main factors influencing the deformation of light magnesia concretes have been established. The influence of hardening conditions on the intensity of deformation changes is shown. Revealed the reasons causing uneven deformation of light magnesia concrete. A method for the manufacture of light magnesia concretes has been determined, which prevents their uneven deformation and subsequent violation of the geometry of the structure. It has been established that the introduction of modifier additives, such as cellulose ethers, helps to reduce the delamination of concrete magnesia mixtures, improve their homogeneity and reduce the unevenness of deformation changes over the sample volume.

Keywords: magnesium oxychloride cement, volumetric deformations, shrinkage, expansion, warpage, hardening conditions

To assess the impact of various groups of sources of emissions in urban pollution, there is a method that can be called the main one - the assessment of the contribution to total gross emissions. But this method does not take into account the significant features of dispersion of pollutant emissions in the atmosphere, as well as the specifics of the mechanisms of formation of concentrations of pollutants at a specific point in the city and the calculation of complex indicators of the level of air pollution in urban areas. The authors proposed a procedure for calculating the atmospheric pollution index for source groups using the “summary calculations” tool. The calculations were carried out on the licensed software product "Ecologist-city". Based on the calculations, conclusions were drawn on the reliability of determining the influence of various groups of emission sources on air pollution in the city of Krasnoyarsk, based on the assessment of contributions to the total gross emission in the city.

Keywords: atmosphere, air, ecology, ecology of urban areas, environmental safety, summary calculations, IZA

Fiber-optic data transmission lines (FOCL) are one of the main parts of automated data transmission control system, which controls technological processes of railway transportation. The lines are subject to powerful electromagnetic effects from traction power supply system. Improving the reliability of the entire system by reducing the electromagnetic influence and the optimal choice of the VOC location is a complex and urgent task, the solution of which will significantly improve the reliability and efficiency of the entire automated complex.

Keywords: Fiber optic communication line (FOCL), automated system, electromagnetic influence, system of equations

The structure of synthesized ferroelectric samples of PbSc0.5Ta0.5O3 after mechanoactivation were studied by means of X-ray absorption spectroscopy(XANES), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Based on the combination of effective experimental methods and computer modeling of theoretical X-ray absorption spectra near the L3 - edge of tantalum and lead was studied character of structural distortions for investigated samples after mechanoactivation.

Keywords: Ferroelectrics materials, mechanoactivation, XANES, defects

The article presents the results of experimental studies of changes in the physico-mechanical and operational performance, polymer-dispersion-reinforced asphalt mixtures depending on the temperature of the mineral material and the time of mixing the components in the preparation of the material in the coating plant

Keywords: asphalt concrete, stone mastic asphalt concrete mixture, the wear layer, grain structure, sieve, fraction, track, toughness, shear resistance, roughness.

The article presents the main provisions of the work garmonizatsii such European standards as TL Asphalt-StB 07 and the Finnish standards on asphalt PANKry with the requirements of the RF regulatory framework and given the developed compositions of asphalt mixtures, SMA-11 and their physico-mechanical characteristics.

Keywords: asphalt concrete, stone mastic asphalt concrete mixture, the wear layer, grain structure, sieve, fraction, track, toughness, shear resistance, roughness

The article presents a study on the determination of the resistance to accumulation of residual deformations of asphalt concrete, SMA-11 on the device dynamic tests (PDI) the advantage of these over asphalt concrete stone mastic asphalt concrete SMA-10 GOST 31015.

Keywords: asphalt concrete, stone mastic asphalt concrete mixture, the grain structure, sieve, fraction, residual strain

History share of insurance business in the Province of the Don, the characteristic four stages of development process, the analysis in general and the specific activity of sixteen joint campaigns, including foreign, on the Don in the late XIX - early XX centuries. ("New York", "Urbain", "Ekvitebl"). The social composition of the policyholders, insurance forms discounts logic of competition  

Keywords: insurance organization of insurance business corporate insurance insured event insurance discount insurance premium insurance rates insurance capital

History rural fire insurance on the Don, analysis of insurance institutions Don Army (1870-1876), 
regional rural council (1876-1882), the Regional Management Committee for Zemstvo Affairs (1882-1919). 
The specificity of the insurance for the сossack population: collecting insurance payments stanichno and county boards, 
the choice of the сossacks rated insurance, etc. 
There was a preponderance of mutual insurance, analyzed the accumulation of insurance capital  

Keywords: insurance, organization of insurance, business, Zemstvo insurance, mutual insurance, insured event, insurance valuation, insurance discounts

We show that Finland is planning to strengthen the country's role as an international expert in the Arctic, the Arctic is preparing a program of development of transport, energy and environmental technologies. Particular attention is Finland's prospects for economic cooperation in the exploitation of natural resources in the Arctic.

Keywords: Key words: Arctic, international cooperation, natural resources, Finland, economic interests.

The analysis of the operation of mining equipment in mines revealed  inadequate level of efficiency of its use. In this regard, actual solution of scientific and technical problems aimed at improving the operational efficiency of mining equipment through the development of complex technical and economic measures to manage the system of exploitation, while ensuring the planned performance and the lowest cost to operate the equipment. The main directions of optimization of the system of exploitation of mining equipment, which is to solve the problems of improving the reliability of equipment, the appointment of a rational strategy of maintenance and repair, logistics mining enterprise, the definition of cost-effective resource and long service life through a combination of theoretical and experimental studies.

Keywords: mining equipment, system operation, reliability, technical condition diagnostics, logistics, optimization

In the article the author considers the problematic aspects and empirical complexities of the modern process of institutionalization of the market of countryside low-rise housing construction. Basing on the results of his studies of the modern market practice of the development of mass low-rise housing construction the author substantiates the necessity of formation the logistic model of integrated and organized development of low-rise housing construction, implementation of which will allow to launch the process of institutionalization of the market of housing and communal services that will provide the extension of possibilities for integrated infrastructural preparation of the territories at the expense of deepening the institutional and operational integration of operators of the market of low-rise house building and the market of housing and communal services. From the author's point of view, the effective institutionalization of the process of the extended development of integrated low-rise housing construction can be ensured on the basis of the logistic linking of all parts of construction industry which are integrated into the model of public-private partnership on construction of engineering and communal infrastructure in the system of low-rise housing construction in the framework of the new technological and economic structure which provides the possibility for civilized development of the countryside cottage settlements, integrated development of which makes one of the basic conditions for formation of their long-term market attractiveness and also in future competition with the countryside multi-apartment housing. Low-rise housing construction, economy segment, logistics, integration, housing and communal services.

Keywords: Low-rise housing construction, economy segment, logistics, integration, housing and communal services.

The article describes the main theoretical approaches and challenges to the definition of priorities and the provision of services by the customs authorities of the Russian Federation from the position of the theory of public goods. The conclusion are made about the need for clear delineation of customs regulation of foreign trade and customs services, the introduction to the work of the customs authorities of new services, the active introduction of information and communication technologies

Keywords: Customs services, customs regulations, customs control, the theory of public goods, services