The article describes a partial solution to the problem of disposing of waste plastic as their use in the manufacture of fiberglass reinforcement. The comparison of the calculation of the foundation slab reinforcement using the class A-500S and fiberglass reinforcement with a thickness of 300 mm plate. From calculations that by recycling the plastic in the manufacture of fiberglass reinforcement observed economic benefits for the producer (cost of fiberglass reinforcement with the same thickness of the foundation plate 3 times less than steel), as well as environmental benefit for the planet, as this will help reduce the amount of plastic waste without recycling.

Keywords: plastic, recycling, waste fiberglass rebar, reinforced concrete structure, the foundation

Considered hot-powder materials obtained by the joint mechano-chemical activation of chips D16 ferrotitanium powder in a medium saturated aqueous solution of boric acid with the addition of aluminum powder. The technology includes: mechanochemical activation composition; cold pressing; heating in air, and hot stamping. Investigated the mechanical properties and structure of the obtained hot-materials. Advanced technology allows to obtain a material with high values of strength and hardness.

Keywords: mechanochemical activation, milling, chips D16, ferrotitanium, hot-powder materials, agglomeration

The article presents the results of approximating of ion current signal of the most appropriate parametrical models in Matlab software. It is shown that in spite of the high accuracy of approximation, parametrical model Gaussian, which chosen early in Matlab, have significant drawbacks. In order to eliminate the identified deficiencies authors was developed parametric model in which the discrete Fourier transform was used to approximate of the ion current signal.

Keywords: ion current, the internal combustion engine, a parametric model, a discrete Fourier transform, the Gaussian model, the approximation of a signal

The article presents an analysis of the causes of the defects affecting the bearing capacity of the bridge superstructures. Produced rough calculation of weight load time, which led to the defect data.

Keywords: " defect analysis, span, load, weight, diagram, method of elastic supports, checking flight, the estimated vehicle.d economic purposes of a diversification, technological purposes of ensuring flexibility of production"

It describes the importance of urban development in national security, which is caused by the development of the defense infrastructure districts.

Keywords: city garrison, armed forces, defense, defense infrastructure

In accordance with the theory of mathematical and statistical modeling, evaluation studies, selected the main characteristics of the models describing the studied production process of fiberboard using different types of binders. In accordance with the developed plan of the selected controlled studies, uncontrolled and controlled factors of the process under study. The levels, steps, and intervals of variation of the studied factors. As a method of obtaining the mathematical dependencies of the quality indicators of fibreboard from the kind of used binder was enacted active single-factor experiment. The results of the studies conducted statistical analysis of the dependence of physical-mechanical characteristics of the performance of the finished plate thickness fibreboard manufactured by wet and dry methods, interpretation of research results, quantitative and qualitative relationships between the studied parameters.

Keywords: strength, water absorption resin, fiberboard, thickness, experiment planning, mathematical model

The powder samples of indoniobat lead relaxor ferroelectric prepared by intense mechanical action method in combination with shear have been studied. The dependences of the microstrains and mean square displacements оf the PbIn0.5Nb0.5O3 samples from the values of applied pressure have been investigated. The Integral intensities and half-width of some diffraction reflections have been determined by using X-ray diffraction method. The correlations between mechanical action and concentration and type of defects in the studied samples have been established.

Keywords: relaxor ferroelectric, point defects, dislocation, region of coherent scattering, crystallite, microstrain, mechanoactivation, indoniobat lead, shear, power affecting, X-ray diffraction

The results of researching the speed of increasing strength of modified concrete materials in early period of hardening used for mounting underground structures are given. As a result of researching the most effective supplements like D5 and RELAMIX T-2 are determined. The composition of supplement D5 with fillers of ordinary quality and a con drafting 15 sm, it will gain high strength of 6.5 MРa in 18 hours while with RELAMIX T-2 fillers it will be 2.8 MРa. The given results were used for modeling stress strained state of ground mass and concrete fastenings of non- circular shape.

Keywords: Рassage, fastening, composition of concrete, modifier, concrete strength, young modulus, stresses

Low heat transfer coefficient per unit area is main disadvantage of immersion cooling system. In the theoretical part of the study the main issue was to evaluate the influence of various factors on the convective heat transfer between the solid-liquid interface. The result of this part of study was conclusion that the type of fluid flow in the area of heat transfer is key factor of increase heat convective heat transfer of thermal contact. The Reynolds number is main characteristic of turbulence of fluid flow. Therefore in the experimental part describes study of the effect of the degree of turbulence of the fluid flow at the place of the thermal contact on thermal resistance of immersion cooling system. The design of experimental setup and its main parts is describe further. The result of the experiment is graphic of experimental curve of the thermal resistance of immersion cooling system from the Reynolds number of fluid flow of thermal contact between the solid-liquid interface. The study showed the possibility of local reduction of the thermal resistance of immersion cooling systems to maintain the quality of the thermal management of computing elements that emit significant heat. The results of the study is define the ranges of values of the Reynolds number of cooling system that allows the technical realization at the current dimensions of packages and sizes of microchips sockets.

Keywords: microchip, heat flow, cooling system, Laplace's equation, turbulent flow, Reynolds number, heat transfer, thermal resistance, electrothermal analogy, thermal protection

This paper provides solution for the task of plane movement of the underwater vehicle using hierarchical control system. Searching A*-algorithm is used for creation of the path plan. Vehicle moves along the stated path under control of position-path regulator on the base of square form. Vehicle, used in this paper features torpedo-like form, two cruise engines and maneuvering device.

Keywords: mathematical model, underwater vehicle, planning, position-path control, A*-algorithm

The article presents the results of an analytical review of the major conventional approaches to processing and analysis of the ion current signal of contemporary domestic and foreign authors. Analysis of works made in terms of assessing the possibility of calculating the parameters of the combustion of the fuel-air mixture. It is shown that strong susceptibility of ion current to influence of intercyclic variations limits application of methods in practice, despite considerable theoretical opportunities of such methods.

Keywords: ion current, internal combustion engine, burning, combustion chamber, fuel and air mixture

The paper introduce modern information about localization of function of human cerebral cortex from the viewpoint of brain’s structure.

Keywords: brain, cerebral cortex, contex cerebi, neocortex, cytoarchitectonics, functional map of cere-bral cortex, localization of function of cerebral cortex, sensomotor centers

Synthesis of the TiO2 nanoparticles was carried out by sol-gel method. The optimal conditions for stable TiO2 gel obtaining was determined. The resulting samples were studied by IR spectroscopy. Studies have shown the presence of chemically and physically bounded water in TiO2 powders, dried at 125 ° C. Studying of the influence of the pH on the acid-base properties of the surface of the resulting TiO2 powders was performed by indicator method.

Keywords: TiO2 nanoparticles, sol-gel method, acid-base properties, indicator method, infrared spectroscopy, pH of the medium

The study of copper ion (Cu2+) environment in aqueous solution was performed by means of X-ray absorption spectroscopy. X-ray absorption spectra for various concentrations of aqueous solutions of CuCl2 were measured. The testing of near-edge fine structure approach for calculating X-ray absorption Cu K-edge spectra of copper ion (Cu2 +) coordinated complex by finite difference method for solution of Schrödinger equation were held . A model of local environment of copper ion (Cu2 +) in aqueous solutions is proposed.

Keywords: X-ray absorption spectroscopy, 3d-metals ions, aqueous solutions, local environment, finite difference method, coordination complexes

In this article authors examine integrated method of ring cross-section concrete constructions diagnostics after the example of overhead contact system pylons. Complex physical-mechanical process of carcass and concrete working needs to take into consideration the state of these components. Authors suggest modern device of magnetic-particle method making for carcass state rating and its location in a pylon body. Concrete jacket defectoscopy may be done with modified device population of ultrasonic diagnostics. Examination zones of constructions are found depending on pylons workload scheme. The authors give correlations which let determine parameters of destructions (cracks) that lead to degradation of load-carrying capability. In the article there are graphic materials got as a result of ultrasonic inspection and mathematical expressions for estimating of residual load-carrying capability with a glance of carcass and concrete destructions.

Keywords: overhead contact system pylons, residual load-carrying capability, ultrasonic diagnostics, hodograph, cracks, carcass corrosion, technical state