bluuebunny/crossref_metadata_2025_split huggingface dataset:
The importance of sample preparation in the hydrometallurgical processing of refractory gold concentrates
Authors: Ivanik S A , Ilyukhin D A , Shalygin A V 
Published: November 2019

Abstract
The article indicates the importance of thorough preparation of concentrate samples before hydrometallurgical operations; the experiments on studying of the factor of the size of the material are described. The comparative analysis of particle size after conventional and fine grinding is carried out. As obligatory stage of preparation of the crushed concentrate before autoclave leaching, the decarbonization process is studied. On the basis of the conducted experiments, the optimal regime of the autoclave leaching process is revealed, which provides the oxidation degree of sulfide sulfur of the order of 99%.
Problematics and perspectives of the development of automatic control systems for concentration tables using computer simulation
Authors: Kuskova Yu V , Erokhina O O , Simakov A S 
Published: November 2019

Abstract
The Concentration tables are widely used for the enrichment of various materials due to a number of reasons, which include the low cost of the process and aggregates, high recovery of concentrate; environmental friendliness of the process. However, there are a number of problems associated with both the specific capacity of a single apparatus and the need to adjust the parameters of the process mode in accordance with the characteristics of the used raw materials. Currently, there are no automatic control systems for concentration tables, which is associated both with the lack of a mathematical apparatus for assessing the ore behavior during the process and with the complexity of using computer simulations for various types of materials consisting of liquid and solid systems. This article presents the prospects for the development of automatic control systems for concentration tables with regard to industry development trends.
Method of determining the axial profile and diameter in various micro-holes’ cross-sections after electrical discharge machining
Authors: Loiko A M , Bojko A F , Shestakov A I 
Published: November 2019

Abstract
The paper presents a new method for the assessment of the accuracy of micro-holes obtained by electrical discharge machining, which was called the “blades method” by the authors. This method allows estimating to a high precision the errors in size and shape (taper, ovality) of the holes in the cross-sections of different heights and the axial longitudinal section of the hole. The application of this method is especially effective in studies of the blind micro- holes, as well as non-cylindrical holes, the measurement of which is especially difficult. The developed method was tested in the study of hole profiles processed at different pulse energy. A technological method for EDM of the holes with the help of two modes is proposed, which reduces the main hole shape errors. The application of the developed method allowed increasing significantly the efficiency of studying the electrical discharge machining micro- holes accuracy.
Using the LABVIEW software package to automate production and research tasks
Authors: Melnikova A V 
Published: November 2019

Abstract
Currently, improving the quality indicators of mass production and consumer goods is impossible without the use of modern software systems, means and methods of automation. The main systems capable of satisfying the tasks of modern enterprises and scientific organizations include Scada-systems, which provide the necessary control accuracy and versatility in conditions of low costs for additional staff training. Consider the prospects for improving the technical and economic indicators of metallurgical and chemical enterprises through the introduction of automation, on the example of the operation of concentration plants. Obviously, the main tool to increase the economic efficiency of production is to reduce various types of costs. Among the main cost items, fuel, feedstock and chemical reagents are distinguished, however, the undisputed leader is the cost of electricity, the work of the mills needed to grind the feedstock. On the other hand, the problem of timely and quick diagnosis of the internal components of the mills and the ability to choose the optimal mode of operation are also relevant tasks. These reasons significantly affect such process indicators as the quality of the crushed raw materials, the energy efficiency of the grinding process, reducing the cost of the production cycle, etc. To control the processes of grinding, loading of raw materials, monitoring the filling of the drum, the use of vibroacoustic primary transducers installed on the housing of the axle bearing of the drum mill is promising.
Method of reliability and speed increase of work of automatic input of a reserve on the basis of the microprocessor terminal
Authors: Minakova T A 
Published: November 2019

Abstract
The new operation algorithm of the automatic input device of a reserve (AIR) together with the system of relay protection of power transformers of substation is offered. The increase in reliability and speed of the automatic input of a reserve is provided due to use of signs and algorithms of identification of emergencies and collaboration of a system of relay protection and automatic equipment of substation. The sign of identification of level of undervoltage on tires of the distributing device with automatic input of a reserve and also type of the relay protection which switched-off the equipment in emergency operation is entered. The formulas for calculation of parameters at which operation of AIR is provided are offered. The proof of efficiency of the offered signs and algorithms is executed on the basis of the analysis of oscillograms of parameters of emergency operation. The program realization of the offered algorithm on the basis of the microprocessor terminal of relay protection Sepam 1000+ is presented.
Determination of nanocharacteristics of strength based on acoustic emission diagnostics
Authors: Nosov V V , Grigoriev E V , Pavlenko I A , Gilyazetdinov E R 
Published: November 2019

Abstract
During the period of production and exploiting of materials, complex physicochemical processes of interaction of their components with each other and with the environment take place. Identifying the mechanisms of this interaction will help to understand its various aspects and to optimize the technological processes of manufacturing materials with desired properties. The solution of this problem can be based on the interpretation of the results of acoustic emission (AE) tests from the standpoint of a multilevel model of the time dependences of the parameters of AE heterogeneous materials.
Information and kinetic approach to the acoustic emission diagnostics of technical facilities
Authors: Nosov V V , Grigoriev E V , Pavlenko I A , Gilyazetdinov E R 
Published: November 2019

Abstract
The analysis of trends in the development of resource assessment methods is given, a multi-level information-kinetic approach to acoustic emission diagnostics is described and its methodological relationship with the traditional experimental method of resource assessment is shown. The informative multi-model diagnostic parameters associated with various scale level strength characteristics of structural materials and resource technical objects are given. The examples of resource assessment of welded joints and rolling bearings are considered.
Application of polymeric materials for abating the environmental impact of mine wastes
Authors: Pashkevich M A , Alekseenko A V , Petrova T A 
Published: November 2019

Abstract
Insulation methods, helping to prevent the negative environmental impact of mine dumps, tailings and other waste storages, are considered and their drawbacks are revealed. The proposed two ways of environmentally sound and cost-effective preserving are described. The first approach is to form polymeric screens over the waste surface, as well as under a storage facility. The conducted experiments included the investigation of changes in physical and mechanical properties of polymers depending on their processing temperature. To study the suitability of low-density polyethylene, high-density polyethylene and polypropylene, the damage to the coating structure integrity as a result of normal load application is assessed. The second approach is to cover slopes of the dumps with a three-dimensional erosion control mat. The subsequent hydroseeding allows ensuring complete coverage and high strength of the slope surface in a short time and at the lowest cost. In order to prevent mine dump erosion and minimise associated costs, the analysis of key properties was performed. It was revealed that polypropylene and polyester used as a geonet are characterised by the lowest volume of fertile soil needed to cover.
Substantiated and interrelated technical tolerances needed in regulatory documents on the construction of automobile roads and their geodetic support
Authors: Pronina L A , Stolbov Yu V , Uvarov A I , Parkhomenko N A 
Published: November 2019

Abstract
The necessity of a regulation of substantiated and interrelated technical tolerances through regulatory documents regarding the construction of automobile roads and their geodetic support is proven. The discrepancies in the requirements for the implementation of construction and geodetic works in the arrangement of the structural layers of road pavement foundations and coatings are pointed out. The regulation of accuracy standards in the construction of automobile roads, which does not correspond to the basic principles of probability theory, mathematical statistics and the theory of mathematical processing of measurements, is given as an example. In the case of exploitation of road-building machinery with automatic systems for the maintenance of leveling points, the execution of level runs with a class III accuracy is recommended, while in the case of exploitation of road-building machinery without automatic systems, the execution of level runs with a class IV accuracy is recommended.
Development of metrological methods for determining the balance of water and heat of generating companies
Authors: Shamaitis A S , Kremcheev E A , Nagornov D O , Kremcheeva DA 
Published: November 2019

Abstract
The paper considers the causes of unbalance at the heat source during the normative consumption of resources, and also presents the results of the analysis of the metrological method of reducing the balance with statistical data and calculating the economic effect. Additionally, there are three options for solving the problem of unbalance, indicating the estimated economic effect for the station. The paper presents studies on the assessment of the imbalance in the supply and consumption of heat of an energy generating enterprise with a mixed consumption structure (instrument accounting, regulatory accounting). The possible solutions proposed in this work are based on the existing approach to estimating the uncertainty of instrumentation and are tested on arrays of statistical data from thermal power plants. For the proposed solutions to the problem of unbalance, an assessment of economic efficiency is made.
Diagnosis of mining and oilfield equipment by excited oscillations analysis technique
Authors: Shishlyannikov D I , Pushkarev A E 
Published: November 2019

Abstract
The paper presents relevance of application of non-destructive testing methods in the assessment of technical condition of the mining and oilfield machine components is justified. The prospects of diagnostics of process equipment by the excited oscillations analysis technique are proved. Design and operation algorithm of the multichannel synchronous analyzer Kamerton by LLC NPP ROS (Perm) are described. Methodological bases of defect finding using the multichannel Kamerton analyzer are described. The basic quality criteria characterizing the diagnostics-based state of technical elements are listed. It is proved that the mining and oilfield equipment technical condition assessment method by excited oscillations analysis allows carrying out operative diagnostics of technical facilities without shutdown. This method has no analogues in terms of efficiency compared to the traditional equipment nondestructive testing methods: magnetic particle, metal magnetic memory, ultrasonic flaw detection, ultrasonic thickness measurement, radiographic, metallographic, etc. In some cases, for example, for structures made of heterogeneous materials such as reinforced plastic or reinforced concrete, it is the only possible diagnosis method.
Development of a model for predicting the dynamic effect on the stability of rock excavation
Authors: Karasev M A , Sotnikov R O , Sinegubov V Yu , Egorova N A , Makarov K V , Thorikov A I 
Published: November 2019

Abstract
The present work is devoted to the prediction of the excavation stability and analysis of the geo-mechanical processes near the excavation under dynamic impact. The development of a numerical model of the forecast of the development of a stress-strain state with allowance for the dynamic effect taking into account the geometric parameters of the mining development, the speed and nature of the application of the load, and the formation of zones of intense fracturing in its vicinity are performed. The influence of the intensity of the dynamic effect on the nature of the manifestation of geo-mechanical and geodynamic processes in the vicinity, the movement of the contour of the rock excavation, and the probability of ejection of the rock mass are determined.
Metrological support of an automated control system for a rocking machine
Authors: Tynchenko V S , Bukhtoyarov V V , Tynchenko V V , Milov A V , Bashmur K A , Kukartsev V V 
Published: November 2019

Abstract
The article discusses the problem of control automation for wells equipped with sucker rod pumps. The main goals of such automation are presented, the achievement of which allows increasing well productivity, as well as improving working conditions of staff. As a result of the study, the analysis of the features of wells automation equipped with sucker rod pumps was carried out. The principles of automation of such an object were considered and a control system diagram was presented. The presented functional diagram of the SCADA system involves the use of a number of sensors to measure the current parameters of the well. Using the expert assessment method, a reasonable choice of specific measuring devices was made. Reviewed measuring devices are modern equipment of Russian and foreign production, which has a good service life and the necessary measurement accuracy.
Expert analysis of the automation equipment for the integrated oil treatment unit
Authors: Tynchenko V S , Bukhtoyarov V V , Tynchenko V V , Petrovsky E A , Bashmur K A , Kukartsev V V 
Published: November 2019

Abstract
The article discusses the problem of control automation for integrated oil treatment unit. The main goals of such automation are presented, the achievement of which allows increasing oil treatment unit productivity, as well as improving working conditions of staff. As a result of the study, an analysis of the features of oil treatment unit automation was carried out. The principles of automation of such an object were considered and an oil treatment unit principal schema was presented. The presented features of the SCADA system involve the use of a number of sensors to measure the current parameters of the oil treatment unit. Using the expert study method, a reasonable choice of specific measuring and control devices was made. Reviewed measuring and control devices are modern equipment of Russian and foreign production, which have a good service life and the necessary measurement accuracy.
Improvement of the construction of vibration-centrifugal unit
Authors: Uralskiy V I , Uralskiy A V , Sinitsa E V , Karatsupa S V , Uralskaja L S 
Published: November 2019

Abstract
The article presents the scientific and technical studies to create an effective system for balancing the lever mechanism of the centrifugal grinding unit with the possibility of automatic adjustment during the technological grinding process for changing the size of the grinding load in the working chambers.
Research of the parameters of boundary friction of tribosystems in the introduction of surface-modified Al-samples
Authors: Silivanov M O , Vinogradova A A 
Published: November 2019

Abstract
In this work, the influence of the structure of the adsorption layer of the modified aluminum dispersed powder on the thickness of the boundary layer of the tribosystem with lubrication in the form of oil I-20 with the addition of surface-modified samples was studied. The thickness of the lubricating layer (according to Petrov formula), the value characterizing the antifriction properties under boundary friction conditions, was calculated. The data on the effect of adsorption of various quaternary ammonium compounds on the boundary layer are important for understanding the interaction of these additives with oil components and their ability to reduce friction in the system.
Fundamentals of ISO 9001:2015
Authors: Leontyuk S M , Vinogradova A A , Silivanov M O 
Published: November 2019

Abstract
The choice of an effective quality management system is a non-trivial task which requires a special approach. We consider the main changes in the new edition of the international standard for quality management systems ISO 9001: 2015, its impact on the workflow and benefits.
Application of ANSYS/FLUENT software package for analysis of thermohydraulic processes in the low-temperature main pipeline for liquified hydrocarbon
Authors: Zakirova G S , Krapivsky E I 
Published: November 2019

Abstract
The article discusses examination automation of thermohydraulic processes in the low-temperature main pipeline for liquified hydrocarbon. The computerized simulation of the nonisothermal flow of liquified hydrocarbon in the low-temperature main pipeline is performed by means of ANSYS/FLUENT software package. The authors have performed the analysis of the nature how the temperature and the pressure is distributed in the flow of liquified hydrocarbon mixture along the pipeline length. The computational model of the low- temperature pipeline for examination of hydraulic and thermal loss of the pumped mixture of liquified hydrocarbon is designed. The possibility of application of ANSYS/FLUENT computational fluid dynamics software package is proved for automation of thermohydraulic calculation of the low-temperature pipeline for liquified hydrocarbon mixture taking its thermophysical properties into account.
Influence of the content of caluminate on their physicochemical properties
Authors: Zhadovskiy I T , Berlinskiy I V , Vasiliev V V , Stogov A V 
Published: November 2019

Abstract
The research of the properties of the complex alumínate solutions obtained through Bayer process or sintering process, will enable to determine the optimal parameters for the process, to increase the efficiency of the production and will be instrumental in high quality alumina production. The key stages of the alumina production through Bayer process which define its efficiency are digestion and decomposition processes. The main properties of the obtained products and amount of losses of the commercial components are established on these stages.
Development of a three-level information model for processing diagnostic information for electric transport systems
Authors: Malozyomov B V , Druzhinina N S , Daudov I M 
Published: November 2019

Abstract
The article proposes a way to improve the existing system for forecasting the technical condition of vehicles at electric transport enterprises. The authors propose a three-level architecture of the software and hardware of the information system and its implementation in Intranet and Internet technologies. The transition to a three-level system is primarily due to the desire to reduce the information system costs, which consists of the cost of equipment, software and operating expenditures. In addition, the work defines the structure of effective forecasting of the developed system operation.
XV Russian Conference on Thermophysical Properties of Substances (RCTP-15)
Authors: Son E E , Kobzev G A , Morozov I V 
Published: November 2019

Abstract
This paper is a preface to the proceedings of the XV Russian Conference (with international participation) on Thermophysical Properties of Substances (RCTP-15), which was held in Moscow, Russia, October 15–19, 2018.
Equation of state for dense non-isothermal plasma
Authors: Gabdullin M T , Ramazanov T S , Ismagambetova T N 
Published: November 2019

Abstract
In this work the effective potentials taking into account screening effects at large distances and quantum-mechanical effects of diffraction at small distances were used as models of interaction between particles. Thermodynamic properties of dense non-ideal non-isothermal plasma were calculated using these potentials and obtained on their basis radial distribution functions (RDFs). The influence created by difference between temperatures of electrons and ions was also considered and found to be able to significantly influence the effects in such plasmas.
High-resolution adiabatic calorimetry of supercooled water
Authors: Voronov V P , Podnek V E , Anisimov M A 
Published: November 2019

Abstract
Liquid water exhibits anomalous behavior in the supercooled region. A popular hypothesis to explain supercooled water’s anomalies is the existence of a metastable liquidliquid transition terminating at a critical point. The hypothesized phase transition is not directly accessible in a bulk experiment because it is expected to occur in “no-man’s” below the kinetic stability limit of the liquid phase at about 233 K, the temperature of homogeneous ice formation. Therefore, verifications of this hypothesis are usually based on extrapolations from the experimentally accessible region. In this work, we present the results of highresolution adiabatic calorimetry measurements of cold and supercooled liquid water in the range from 294 to 244 K, the lowest temperature of water’s supercooling achieved so far in a bulk adiabatic-calorimetry experiment. The resolution of the measurements is also record-high, with the average statistical (random) error of about 0.1%. The data are consistent with adiabatic-calorimetry measurements of supercooled water earlier reported by Tombari et al (1999 Chem. Phys. Lett. 300 749) but significantly deviate from differential-scanning calorimetry measurements in emulsified water reported by Angell et al (1982 J. Phys. Chem. 86 998) and by Archer and Carter (2000 J. Phys. Chem. 104 8563) Consequences of the new heat-capacity data in interpretation of the nature of water’s anomalies are discussed.
A model system of the liquid density, the gas density and the pressure on the saturation line of SF6
Authors: Kudryavtseva I V , Rykov S V , Rykov V A , Ustyuzhanin E E 
Published: November 2019

Abstract
We have set a task to develop a system of self-consistent models in the article. The first and the second models let us describe the liquid density and the gas density on the saturation line; the third one is connected with the saturation pressure. To build these models, we have used a methodical approach based on the Clapeyron-Clausius equation. The approach also includes some requirements of the scaling theory of critical phenomena. To calculate the adjustable coefficients of these models, experimental data on the liquid density, the gas density and the saturated pressure of SF6 have been selected. The new system let us describe the named properties in a wide interval of temperature. A comparative study has been made for these calculated properties as well as for the mean diameter of the coexistence curve. Numerical results of the study are discussed.