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ENGINEERING

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217, 16+

THE METHOD OF MEASURING THE DENSITY OF THE PILE DISTRIBUTION ACCORDING TO THE CHARGES OBTAINED UPON CONTACT WITH THE ELECTRODE

Posted in 2019, ENGINEERING, Issue № 10(88) October 2019 | 0 comments

The considered method relates to the methods of quality control of homogeneous particles, such as pile, used when applying coatings in strong electric fields. The aim of the invention is to reduce the measurement time. The goal is achieved by the fact that electrically charged particles are dispersed in a non-uniform electric field created by curvilinear electrodes that are symmetrical about the vertical axis. The electric field has a minimum value on this axis in any horizontal section. Particles are passed through a hole in the upper electrode, which coincides with the axis of symmetry of the electric field, measure the total charge transferred to the collector installed at different heights relative to the upper electrode, and calculate the distribution function of the particle charge. Experimental data obtained on a sample of nylon pile used in applying pile coatings by electro-floating method, which prove the efficiency of the proposed method, are presented.

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INFLUENCE OF LANTHANUM OXIDE ON THE PROPERTIES OF CHEMICALLY RESISTANT CERAMICS OBTAINED WITH THE USE OF GALVANIC SLUDGE

Posted in 2019, ENGINEERING, Issue № 10(88) October 2019 | 0 comments

This paper presents the results of an experimental study of the dependence of the operational properties of ceramics on the amount of lanthanum oxide in the composition of charge. The main component of the processed charge is low-plastic clay, the use of which does not allow obtaining high-quality products. Additional additives are boric acid and galvanic sludge, which allow lowering the temperature of liquid-phase sintering to obtain a chemically and thermally stable glassy phase. In the course of the studies, it was found that lanthanum oxide is involved in the formation of the glassy phase leading to an increase in its strength, chemical and thermal resistance. The amount of lanthanum oxide was determined by the results of the work, which enables effective improvement of the quality of the obtained chemically resistant ceramics.

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RISKS OF CYBER SECURITY OF DISTANCE LEARNING SYSTEMS

Posted in 2019, ENGINEERING, Issue № 10(88) October 2019 | 0 comments

The article addresses the issue of providing cybersecurity of distance learning systems at educational institutions. The main safety risk factors, as well as types and sources of threats are considered. A model of the information security violator in the distance learning system is compiled; types of violators and goals pursued are described. A cybersecurity risk assessment algorithm is not only proposed but also mathematically described. To calculate risks, it was offered to use a three-factor model that takes into account the frequency of threat, damage and coefficient of effectiveness of the measures aimed at countering the threat.

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DEVELOPMENT OF HEAT-RESISTANT HEAT-INSULATING FOAM MATERIAL

Posted in 2019, ENGINEERING, Issue № 10(88) October 2019 | 0 comments

The paper presents the results of studies on the development of heat-resistant heat-insulating material based on a binder of a 10% solution of polycarbosilane in xylene filled with various hollow microspheres and fibrous filler, which was used as a silica fiber. According to the results of the experiments, the best results were obtained with samples of the heat-insulating material containing hollow carbon microspheres. With a binder content of 15-70% wt., hollow carbon microspheres of 12-65% wt. and quartz fibers of 8-43% wt., the foam obtained had a low density, low thermal conductivity and good strength characteristics, which makes it viable for use as high-temperature thermal insulation in various industries including energy and aircraft manufacturing.

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PROCESSING AND USE OF WASTE STAGE HYDRATION PRODUCTION OF VEGETABLE OILS

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The article describes research on utilization of phosphatidic emulsion –- waste vegetable oil production from phase hydration allocation fraction of phospholipids, which can find independent use, and also reception of compost based on the activated sludge with the addition of phospholipid emulsion.

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REDUCTANT MELT BOUNDARY TENSION EFFECT ON METAL THERMAL REDUCTION OF CALCIUM OXIDE

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

Metal thermal reduction of calcium oxide by aluminum and iron shot were investigated in equal conditions and the same atom reductant content. The discrepancy between the calcium yield is demonstrated by difference in the briquette microstructure: the structure corresponds to the case of limited wetness with the solidified CaO reductant when it reduced by the iron shot; consequently, the calcium yield is 2.5 times higher in aluminothermic reduction of the calcium oxide than iron shot reduction. The existing contradiction between examined parameters such as those, which defined in the aluminothermic reduction and energy activating diffusion and heat of evaporation, could be got over, if boundary tension dependence per temperature would be accounted in the analysis. There is a model suggested for melt reductanct “transformation” within the CaO surface that was examined on correspondence with literature data. The formula of calcium yield calculation was obtained according to parameters of the process. As a base of choosing of the reducing metal, there should be a criteria given upon the wetting it with (in) oxide surface.

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ENERGETICALLY EFFECTIVE WAY OF THE HEAT INSTALLATIONS FOR ANIMAL HUSBANDRY

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

It is offered new energetically effective way of the decentralised heat cattle-breeding installations. The block diagramme of system for heating with salvaging, ozonization and recirculation of internal air is presented. The pre-production model of installation for heating is developed.

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EFFECTS OF AGGRESSIVE ENVIRONMENT ON STRENGTH AND RESILIENCE OF WOOD FLEXURAL

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The results of studies to determine the long-acting-aggressive environment – water quantity limits and strength of the flexural modulus of the wood samples with their representation of the exponential functions.

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THE INFLUENCE OF NON-METALLIC INCLUSIONS ON THE HIGH-TEMPERATURE PLASTICITY OF CONTINUOUS-CAST BLOOM MADE OF RAIL ELECTRIC STEEL

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The article considers the type of non-metallic inclusions which are located in different zones of continuous-cast bloom, their influence on high-temperature plasticity.

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FEATURES OF FLOWING AROUND FLAT OVAL TUBE IN TRANSVERSAL FLOW

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The results of research of pressure distribution on the surface of flat oval tube, and visualization of flow are presented. The features of flowing around of flat oval tube are considered. Two boundary layer separations are exposed on a surface of flat oval tube.

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TO THE QUESTION OF THERMOREGULATION IN HEAT-STRESSED TECHNICAL SYSTEMS WITH ADHESIVE JOINTS

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

Technological method of producing adhesive joints of metal structures with adhesive layers of high thermal conductivity with condition for preserving of highstrength compounds is proposed. Studies have found that impact on uncured adhesive layer made of dispersed-filled the adhesive by magnetic wave field can significantly improve its thermal conductivity and save the desired bond strength.

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THE STUDY OF THE THERMAL STRESS IN DISPERSION-HARDENED COMPOSITE MATERIAL WHILE HEATING

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The average thermal stress in composite material Ni-TiC with 7-52vol.% of TiC at 200…1000ºC was studied in the article. It was proved that value was equal to 8,3…10.5 N/mm2. The thermal stress was increasing while temperature was growing up to 500ºC, but when temperature gained 500ºC the stress began to decrease up to 1000ºC.

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PERFORMANCE EVALUATION USE OF WASTEWATER FOR IRRIGATION

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

Based on field studies mapped the formation of water regime calculated soil moisture on three options. Assessed the effectiveness of the use of municipal wastewater productivity of agricultural crops – alfalfa.

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LEAKAGE EFFECT EEG WITH BARTLETT FILTER APPLYING AND WITH HIS ABSENCE

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The leakage effect using spectral analysis as applied to EEG is considered. Statistical calculations showed that Bartlett filter doesn’t remove the leakage effect.

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WAY OF CONTROL OF SYMMETRY OF THREE-PHASE VOLTAGE

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The way of control of symmetry of three-phase supply voltage of electric motors is offered. The way is based on registration of decrease in a minimum of tension at the exit of the three-phase bridges rectifiers.

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RAZNOSTNO – THE CORRELATION METHOD OF MEASUREMENT OF MOVEMENT OF THE IMAGE

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

Results of computer modeling of autocorrelated and mutually correlation functions of differential images of a video series of a moving scene and assessment of their use are presented in article for measurement of a vector of speed of movement.

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SYSTEM OF NERVOUS SYSTEM PROPERTIES ESTIMATION BASED ON TESTING OF NEURAL INDICATORS

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

In this paper we describe the program for condition evaluation of the nervous system of an athlete with a test set items.

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FEATURES OF EDUCATIONAL WORK STUDENTS OF TECHNICAL TRAINING AREAS FBGOU VPO “CSU”

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

The article raises the question about the main directions of educational work with students of technical specialties FBGOU VPO Cherepovets state University. Analyzed the main directions and tasks of educational work in Engineering and technical Institute of Cherepovets state University.

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AUTOMATED INFORMATION SYSTEM ACTIVE POSITION OF STUDENTS IN THE LABOUR MARKET

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

This article describes a system based on a comparison of the results of the final assessment of students with the requirements of the employer , for making the student a certain position , by treating them on the server side .

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VISUALIZATION AS A RESEARCH METHOD OF FLOWING PROCESSES FOR BODIES (ILLUSTRATED THE SPHERE, THE CIRCULAR CYLINDER AND THE CUBE)

Posted in 2014, ENGINEERING, Issue March 2014 | 0 comments

This article presents the results of experimental studies of flowing processes of bluff bodies using imaging techniques currents. The aim of the experiment was to study the peculiarities of the formation and separation boundary layer. Conclusions were drawn, that the main features of separated zones near the circular cylinder, the sphere and the cube and the methods of their observations based on the analysis results.

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