ENVIRONMENTAL AUDIT OF AN ENTERPRISE AS A TOOL FOR ENVIRONMENTAL SAFETY

The article deals with one of the economic tools for environmental management – environmental audit. Currently, this type of audit is in demand in the market of environmental services for several reasons – the presence of a good environmental image as one of the competitive advantages, and the prevention of violations of environmental legislation, etc. In addition, the work carried out a step-by-step calculation of the cost of audit services for a specific organization related to nature users operating category II facilities, taking into account its financial indicators, the scale of activities and other factors.

INFLUENCE OF A PULSE MAGNETIC FIELD OF HIGH VOLTAGE ON THE INDICATORS OF ANTI-AGGREGATION ACTIVITY OF THE CHEMICAL SUBSTANCE AND THE PREPARED PHARMACY PREPARATION PENTOXYPLIN

It was found that the pharmaceutical preparation of pentoxifylline, treated with a pulsed magnetic field (PMF), changes the antiaggregatory properties.The pharmaceutical preparation contains the pure substance of pentoxifylline and a number of excipients. To understand the mechanism of changes in the antiaggregatory activity of a pharmaceutical preparation, the goal was to further investigate the effect of PMF parameters on its chemically pure substance.PMF processing was carried out on the «MIU Bio» installation with a single exposure at a field strength in the range (0.48–1.17) 106 A/m at discharge circuit frequencies (8–50) 103 Hz.Experiments have shown that the effect of PMF on the pure substance of pentoxifylline did not cause significant changes in its antiaggregatory activity. This result made it possible to get one step closer to understanding the mechanism of the effect of PMF on a given drug. Apparently, the reason for the change in the biological effectiveness of the pharmaceutical pentoxifylline treated with PMF lies in the effect of impurities, which will be the focus of further research.

AUTOMATION METHODS FOR SPECIAL VEHICLES OPERATING IN HARSH ENVIRONMENTS

This paper describes the main principles for development autonomous vehicle, which could be used in harsh environment, especially in mining operations. Actually, the overall structure of system is shown which developed under the author's guidance. In addition, the main scenarios of the usage are presented. Additionally, there will be described significance of the experimental prototype for testing and checking all subsystems.

SELECTION OF THE PARAMETERS OF THE GENERALIZED DISPERSION ALGORITHM FOR MULTIVARIATE STATISTICAL CONTROL OF THE PROCESS SCATTERING

To control the stability of the functioning of aviation equipment units based on the results of monitoring a group of indicators, methods of statistical processes control can be used. In the presence of significant correlations between performance indicators, multivariate methods are used. In this case, the control of the average level of the process is carried out on the basis of the Hotelling algorithm, the control of multivariate scattering is carried out using the generalized variance algorithm. If, according to the conditions of the process, it is necessary to ensure the fastest detection of a violation, then the optimization problem of finding such values of the sample size, sampling frequency and position of the control boundaries is solved that minimizes the average time of the unstable state of the process. The initial data are the number of process indicators monitored, the target value of the generalized variance (estimated from experimental data), the characteristic of the permissible increase in scattering, the intensity of process disturbances (parameter of the Poisson distribution); time to search for a violation after its detection and time to calculate the sample element.

AUTOMATION OF DIAGNOSTIC METHODS FOR POLYMERIC COMPOSITE MATERIALS

The issues of automation of the PCM diagnostics process in laboratory and factory conditions, through the use phased array antennas.

FORECASTING EMERGENCIES AT HYDRAULIC STRUCTURES

The article deals with the actual problem of emergencies at hydraulic structures. Since time immemorial, man has continuously developed various methods and techniques to take advantage of the benefits of water resources, as well as to protect himself from the ravages of water. Thus, on the territory of the Republic of Tatarstan, a large number of hydraulic structures were erected, which are classified as hydrodynamic hazardous facilities. Accidents at these facilities are sources of man-made emergencies. A number of hydraulic structures on the territory have been in operation without reconstruction for more than 70 years, and most of them are in disrepair. The problem of ensuring the safety of hydraulic structures remains not fully understood and relevant today. As a rule, basically all hydraulic structures are located within or above settlements and are objects of increased risk, since the destruction of dams can lead to an environmental disaster. Also, incomplete destruction of the dam, when the safe operation of the structure is no longer possible, can lead to serious economic losses as a result of the cessation of energy production, hydraulic regulation and water collection in the reservoir. Therefore, careful monitoring is required to identify any possible emergencies. One of the solutions in this situation is the use of various methods for predicting emergencies at hydraulic structures. In this regard, in the work, the authors adapted a mathematical model based on Markov chains, which is distinguished by the efficiency of calculations and a high degree of approximation to statistical data. This model makes it possible to predict the state of hydraulic structures when the data on the water level and the volume of seepage in the hydraulic structure changes. Based on the adapted model, the results of forecasting the water level for real hydraulic structures were obtained.

INCREASING STRUCTURE STIFFNESSOF CORRUGATED ALUMINUM SPOOL

The paper presents the results of a computational and experimental study of aluminumspools with different profile configurations. Mathematical modeling of the product was made using ANSYS 18.2 software package. Models were verified based on actual test results on FP-100/1-10tn testing machine in JSC “Arconic SMZ” Central Factory Lab as per valid normative documents. The study was made on a trial lot of spools with a specially developed type of profile. Comparative analysis was carried out against purchased spools with a profile previously developed by the spool supplier.The spools under study were made of alloy 3104 H19, 0.26 mm strip thickness. The study resulted in work out of empirical formulas helping to determinecollapse loadand calculate the amount of metal forevaluationof stiffness-to-weight ratio. The proposed formulas were added with dimensionlesscoefficients to account for the profile configuration (shape factor) and the relative height of the profile wall.The coefficients were presented in the form of nomograms for easygraphical assessment of the profile performance.The critical height of the profile was determined, at which specific stiffness of the structure is the highest.It was demonstrated that a profile with an inclined vertical wall and a profile with an omega-shaped inner generatrix have lower stiffness than a profile with vertical U-shaped corrugations.The optimal range of the corrugation wall tilt angle was determined to ensure the required level of the structure stiffness, on the one hand, and minimize metal consumption, on the other hand. Comparison of the results of model calculations, the results of computation by the proposed empirical dependencies and actual experimental data showed their high repeatability, whichleads to the conclusion that the proposed formulas are applicable for engineering calculations.The developed profile of a special type makes it possible to reduce the spool metal consumption by 13% while maintaining the required strength performance and the level of stiffness.

UNICELLULAR PLANKTON TRANSFORMATION IN THE RIVER-BAY-RESERVOIR SYSTEM IN THE INITIAL PHASE OF CYANOBACTERIAL BLOOM

The structure and spatial distributionof unicellular plankton of the river Usa, Usinsky Bay and the adjacent section of the Kuibyshev reservoir in the initial period of cyanobacterial bloom is discussed. The greatest development of plankton was recorded in the central part of Usinsky Bay. In the river part, the basis of the total plankton biomass was formed by heterotrophic bacteria and diatoms, and in the bay and reservoir –by cyanobacteria, mainly of the genera Aphanizomenon and Anabaena. Among eukaryotes in Usinskiy Bay, chlorophytesand diatoms prevailed, and in the reservoir - diatoms and ciliates. Another feature of plankton in the bay and reservoir was the increased proportion of heterotrophic bacteria and ciliates associated with cyanobacteria. The analysis of the structural transformation of communities made it possible to distinguish two main clusters of communities, "lotic" and "letic", which differ in their structure and quantitative characteristics.

STRUCTURE AND HIERARCHIES OF INFOCOMMUNICATION SYSTEMS IN DRIVER ASSISTANCE SYSTEMS AS DESIGN TEMPLATES FOR SUBSYSTEMS OF UNMANNED VEHICLE

The article presents the structure of infocommunication systems of unmanned transport systems developed by the author, which combines the main information subsystems of the control loop in Advanced driver-assistance systems (ADAS) and shows their interaction. The analysis of the architecture of the ADAS system as a complex system from the point of view of the application of Mesarovich's theory of hierarchical multilevel systems is given (also known as stratification process) - as a result of which ADAS infocommunication systems are presented in the form of a hierarchy of the strata-layers-echelons type. Such a representation has scientific novelty as the application of stratification methods to the description of ADAS infocommunication systems and practical value in the design of the ADAS architecture and the creation of templates for the design of unmanned transport systems infocommunication subsystems.

IMPROVING THE QUALITY OF CONTROL OF WELDED JOINTS IN THE PRODUCTION OF MECHANICAL ENGINEERING PRODUCTS

The purpose of the work is to develop an automated quality control system for welded joints of cable car structures designed and manufactured at the Skado LLC enterprise (Samara) in order to improve the quality of control. The analysis of requirements for welded structures and welded joints of cable cars is carried out, methods of control of welded joints are considered. A block diagram of an automated system for quality control of welded joints based on the method of ultrasonic testing has been developed. The analysis of ultrasonic sensors on phased arrays is carried out. The sensors and actuators of the system are selected. A scheme for interfacing system elements with a programmable logic controller has been developed. The structure of the system and the scheme of interfacing the system elements with the programmable logic controller are described. A method for performing control has been developed.