bluuebunny/crossref_metadata_2025 huggingface dataset:
Enhancement IDEA Algorithm with Digital Image as Key Encryption and Decryption
Authors: Rahim Robbi , Siregar Helmy Fauzi , Sitanggang Delima
Published: November 2019

Cryptography is one type of protection that is widely used to secure information, encryption, and decryption and the use of keys is a common process used to secure information; and also the cryptographic processes have a classic problem that is the distribution of keys that are vulnerable to interception when the sender sends the key to the receiver, the cryptographic protocol (Authentication) could be used to minimize key distribution problem because there is no need for key exchanges. Shamir’s Three-Pass Protocol, Secret Splitting, Bit-Commitment Protocol and Blind Signature are few cryptographic protocols that can be used to help with key distribution issues, this article performs systematic approach to protocol cryptography for security level and the using other algorithms to combine with protocol.
DC-DC Hi-Voltage Converter in application of multi-stage coil gun power charger
Authors: Winarno B , Putra R G , Yuwono I , Sumantri B , Gunawan A I
Published: November 2019

The multi-stage coil gun is a coilgun with many coils as launchers. Coil gun requires a lot of power to work. High voltage and large currents are needed. Sources of energy to support the coil gun arelimited. Alternatives that are often used by using high voltage capacitors bank. To store energy in a capacitor bank from a battery, a charging device is needed. High voltage DC to DC converter is required. In this article, a high voltage capacitor bank charging device is discussed to supply a multi-stage coil gun. The device has been successfully implemented to support six coilgun levels with the ability to increase the voltage from 12 V to 1.1 kV DC.
Ecological function of green open space as water infiltration: study in kalijodo green open space, north jakarta
Authors: Mbarep D P P , Herdiansyah H
Published: November 2019

Kalijodo Green Open Space is a green open space set by the DKI Jakarta Provincial Government in 2017. Related to the ecological function of green open space as water infiltration, a literature study was conducted to analyze the condition of Kalijodo green open space based on supporting data sources using descriptive analysis techniques. The results of the analysis show that the Kalijodo green open space has not been able to carry out ecological functions as well as water absorption. Based on the imagery in Google Earth, it is seen that Kalijodo’s green open space is very minimal vegetation and looks barren. This condition has implications for hardening the soil, so that water is difficult to seep into the soil. In the last 5 years, the average rainfall intensity from October 2013 to March 2014 was 134.97 mmph and was a very high level of rainfall intensity. Green open space is included in flood-prone areas. With the condition of the Kalijodo green open space and the high intensity of rainfall, the ecological function of green open space as water infiltration has not been maximized.
A new model of open end yarn twist using torus coordinate based on dynamical mechanics
Authors: Putra V G V , Rohmah S
Published: November 2019

Yarn structure and its relationship with the properties have attracted many researchers and scientist in textile science. The importance of this subject has increased due to the need of yarn with best possible quality. In this study, we have established a new equation to relate open end (OE) yarn count number in metric count (Nm
) toward yarn twist on OE spinning. Based on this research, twist has been determined and formulated by analyzing the movement of fibre inside yarn using tensor calculus on torus coordinate based on dynamical mechanics.
Numerical Analysis of the Reynolds Number Effect on the Aerodynamic Performance Wing Airfoil Eppler 562 with Wingtip Fence
Authors: Hariyadi S , Sutardi S , Widodo W A , Pitoyo B J , Pambudiyatno N , Sonhaji I
Published: November 2019

Wings are a very important part of aircraft. In that section, most of the lift forces are generated on the airplanes. The aerodynamic performance produced by the wing greatly determines how optimal the cruising range of an aircraft. To improve the performance of the wings, researchers have been competing to make wing modifications of an aircraft. One modification that is used at this time is by adding end wall which is often referred to as a winglet. Winglets function as a barrier to fluid flow jumps from the lower surface to the upper surface. This fluid flow jumps is often called as a tip vortex. One type of winglet discussed in this study is the wingtip fence. This study took wing objects on unmanned aerial vehicle with numerical simulation using Ansys 19.0 software with turbulent model k-ω SST. The freestream flow rate to be used are 10 m/s (Re = 2,34 x 104) and 45 m/s (Re = 1 x 105). The angle of attack used are (α) = 0°, 2°, 4°, 6°, 8°, 10°,12°,15°, 17°, and 19°. The wing model is an Eppler 562 (E562) airfoil with and without a winglet. From this study, it was found that wing aerodynamic performance with Eppler 562 (E562) airfoil was higher at Re = 2,34 x 104 Delay of the stall is more effective at Re = 1 x 105 compared to the Re = 2,34 x 104 But, the aerodynamic performance Re = 2,34 x 104 better than Re = 1 x 105.
Optimization of Blade Curve of Pump as Turbine for Piko Hydro Power Plants
Authors: Mustafa M , Hantarum H , Suryono S
Published: November 2019

The use of the NS 50 water pump that functions as a turbine for the PikoHidro Power Plant was an idea in finding simple and easy alternative energy in its assembly. In this application a water pump was used as a turbine so the working principle was reversed, where water from a certain height will move the pump, so that the pump impeller rotates and continues to rotate the generator and will generate electrical energy. This study emphasizes the experimental pump functioned as a turbine (PAT) by modifying the same in and out angles on the PAT blade. An NS-50 pump water pump with a capacity of 563.22 liters / minute and a total head of 20 m was tested. The variables used were water level (H) was 3 meters and variations in the different entry and exit angles of the impeller in the 7 specimens used. The pump was then connected to a generator and the result was electricity. The results showed that the best variation was in variations in the exit and entry angles of 30/30, rotation was 810 rpm and the power produced was 90 watts. The experimental results show good results theoretically.
Design Tools for ControllingBrown Planthopper Pests Using Ultrasonic Waves
Authors: Utama S N , Setyaningrum H , Sholeh B , Taufiqurrahman T
Published: November 2019

The brown planthopper pest is a main pest of rice production in East Java and mostly Indonesia areas. The main controls of brown planthopper are mostly using chemical pesticides, which caused resistance on pest. Resistant varieties are the main choice for overcoming attacks of planthopper. However, resistant varieties had limitations because brown planthopper adapted to new biotypes. Conventional Integrated Pest Management (IPM) is reactive to pest attacks and often continues to rely on insecticides. One of the promising ecofriendly technologiesis ultrasonic waves. This study the aim was to design a planthopper pest control system in a room using the HC-SR04 ultrasonic sensor with a frequency of 40 KHz. The trial in the first stage was limited to testing the functionality to the system and testing the range of tools carried out to determine the area covered by the wave ultrasonic. The results of testofthe system are all system components are working properly. The ranges of the tools area maximum range is three meters in surrounding of the ultrasonic sensor.
Supply chain risk assessment of cotton shirt production uses the house of risk method
Authors: Nalhadi A , Kurniasari A , Djamal N , Suryani S , Supriyadi S
Published: November 2019

The purpose of this study is to mitigate risks in supply chain activities in the production of cotton shirts. The method used in this research is the House of Risk (HOR) approach based on the Supply Chain Operation Reference (SCOR) model. The House of Risk (HOR) offers a framework for effectively controlling risks in managing risks from risk agents. Aggregate Potential Risk (ARP) is used to determine the priority of risk sources that need to do in the design of mitigation strategies. The research results identify as many as 26 Risk Events and 21 Risk Agents. Three Risk Agents based on ARP values are Procedures for Delivery of Less Organized Raw Materials, limited and Sudden Product Demand from consumers Mitigation actions used to prevent the causes of risk from occurring are creating standard operating procedures for raw material delivery activities. Also, a contract system establishes between suppliers of raw materials and freight forwarding services. Migration in human resources is evaluating employee performance. Empowerment of the community around the company, subcontracting to other similar companies, reviewing raw material stock is an act of meditation in sudden product demand.
Analysis study of nonwoven pineapple leaf fibre, nonwoven pineapple layered double weave and tricot knitting fabric as absorber material
Authors: Khasanah N I , Makki A I
Published: November 2019

Sound pollution can be minimized by noise intensity using sound absorbing material. Nonwoven fabrics are the material most widely used for acoustic applications. This research investigated about absorption coefficient of nonwoven pineapple leaf fiber (PNW), and its layered combination with double weave (PDW) and tricot knitting fabric (PTK). The variation of fabric will be tested for sound absorption coefficient using an impedance tube. Absorption coefficient test results showed there was an effect in absorption coefficient on nonwoven with layered.
Acoustic absorptive properties of Kapok fiber, Kapok fiber layered tricot fabric and Kapok fiber layered double weave fabric
Authors: Makki A I , Oktariani E
Published: November 2019

Kapok fiber was one of the natural cellulosic fiber that can be found widely in Asia’s forest especially in Indonesia. Kapok fiber was short and smooth surface causing poor inter-fiber cohesion that could not be processed in spinning. This fiber could be utilized to be accoustic sound proofing material. This research investigated about absorptive properties of non woven kapok fiber (SK) and its layered combination with tricot knitted fabric (TC) and double weave fabric (DWK). Combination of various kind of fabric’s type improved thickness and air cavity that impact absorptive properties of fabric. Impedance tube were used to characterization sound absorptive properties at low until normal frequency on 100 until 5000 Hz. The optimum sound absorptive were showed by combination of non woven kapok fiber with double weave fabric with thicknes 11,25 mm. It shows thickness impact to air cavity and gave significant effect to sound absorptive properties.
Method of measuring vibratory condition of a drill string
Authors: Bashmur K A , Petrovsky E A , Bogachev V V , Tsygankova V V , Tynchenko V S , Bukhtoyarov V V
Published: November 2019

The article discusses issues related to the improvement of the operational reliability of downhole measurement systems. The circumstances of insufficient readings accuracy due to severe operating conditions are shown. The inherent negative factors are given, which jointly affect the reliability of the systems and measuring instruments in use. In particular, special attention is paid to vibration loads and the need for their measurement. The urgency of development and research of new reliable systems is demonstrated. A developed method for measuring the vibratory condition of a drill stem and a developed device for the implementation of this method are presented, and operation of the latter is analyzed.
Analysis of the mixture of rare earth elements by atomic spectroscopy
Authors: Dzhevaga N V , Lobacheva O L
Published: November 2019

The authors of this paper give the characteristic and the principle of operation of the ICPE-9000 spectrometer, proposed for the chamber residue analysis that is one of the products of ion flotation, for individual rare earth elements and their mixture content by atomic spectroscopy. The chamber residue was obtained by conducting the ion flotation from nitrate solutions, containing individual rare earth elements of the cerium group and their mixture. The results of the analysis of the solutions by optical emission spectroscopy are shown in the form of molar concentration. According to the obtained experimental data, a tendency for the change of distribution coefficients, separation factors and pH values of maximum recovery at the different values of equilibrium aqueous phase pH value was identified. The possibility of the most effective separation of rare earth elements of the cerium group at different concentrations of indifferent ions was revealed, as well as the forms of recovered compounds were determined.
Determination of the composition of chalcogenid glasses ASxSE1-x by the method of X-ray fluorescent analysis
Authors: Egorova A Yu , Lomakina E S , Popova A N
Published: November 2019

The features of X-ray fluorescence analysis of chalcogenide glassy semiconductors are considered in the research. The standard method was used to determine the concentrations of arsenic and selenium AsxSe1-xalloys. The use of this method allows determining the quantitative composition of glasses with an accuracy of ± 0.0002.
Development of the dialogue skills in a foreign language in comparing of oil benchmarks
Authors: Goman I V
Published: November 2019

The aim of research is to develop skills of dialogue on professional topics in a foreign language. The objectives of the research are the following: analyze professional goals in programs; identify language skills used in the dialogue; investigate the role of self-study in developing the skills of professional communication; suggest ways of improving the dialogue skills (stimulate asking of questions, giving extended answers). Methods of research include literature analysis on the topics of oil benchmarks, methods of teaching professional communication as well as the interview with an expert in teaching foreign languages. The outcomes of research are planned to be a set of recommended exercises for developing of the dialogue skills.
Evaluation of the applicability of measurement techniques to determine the quality of drinking and industrial water used in galvanic production
Authors: Grichukha M I , Kremcheev E A
Published: November 2019

The scientific project «Evaluation of the applicability of measurement techniques to determine the quality of drinking and industrial water used in galvanic production» is devoted to the problems of improving the structure of the methodological base in the production laboratories of enterprises, ensuring its uniformity and efficiency. The paper presents a multi-criteria analysis of measurement methods.
Review of applicability of using indicator gas coefficients for determining the temperature of the place of spontaneous combustion of coal
Authors: Gromyka D S , Kremcheev E A , Nagornov D O
Published: November 2019

Spontaneous combustion of coal beds is considered to be one of the most hazardous effects of coal mining. The most dangerous factor of this process is its abruptness due to several types of coal possible emergence of reaction at low-temperature conditions and subtle reaction behavior at initial stage of the process, which may turn into environmental disaster. Therefore, on many mines and strip mines, in terms of occupation health and safety program and fire- preventing measures realization, fire monitoring system are introduced, as well as spontaneous combustion source monitoring system to apply fire-preventing measures. The most effective type of monitoring systems is gas monitoring, at which cause in many countries, including Russia, spontaneous combustion source indication methods based on fire gases concentration measurement are developed. Those methods are based on sharp increase of some specific gases, such as carbon monoxide and methane, at some point of spontaneous combustion source temperature, which differs depending on coal type and coal deposit. However, the application of those methods does not always allow the advance detection of coal spontaneous combustion areas, due to its low accuracy and dependence of fire-indication gases from external exposure. For that reason, many authors are advising ratios of fire gases or indicator gases ratios as a means of higher-precise spontaneous combustion sources indication method. In this paper, the analysis of those ratios applicability is conducted as well as existing underground fires indication methods.
Automated defect detection in oil-lubricated parts and units of D30KP/KP-2 aircraft gas turbine engines by results of microwave plasma method
Authors: Hodunaev A Y , Drokov V G , Drokov V V , Murishenko V V
Published: November 2019

Classifier between states of “normal/high maintenance/defective” for oil-lubricated parts and units of D30KP/KP-2 aircraft gas turbine engines is developed. The classifier is based on “random forest” machine learning algorithm. It is trained on results of microwave plasma measurements of metallic admixture in oil filter wash samples of engines. Technical state for train set was determined earlier by expert method and was confirmed by factory disassembly study. Classifier result for states “normal/high maintenance/defective” matches expert method in 73 %, 52 %, 66 % respectively.
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

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

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.
Berkeley pit and its impact on the environment
Authors: Kuznetsova A S , Ivanov A V
Published: November 2019

The article tells about the Berkeley Pit and its environmental impact. The main chemical characteristics of mine water and water treatment systems are outlined. Possible ways of dealing with problem of ground water pollution are discussed.
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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 indium in shock waves
Authors: Khishchenko K V
Published: November 2019

A model of the equation of state in the form of pressure as a function of density and specific internal energy is used to describe the properties of indium. Thermodynamic characteristics of this metal at high pressures are calculated and compared with the available experimental data on shock compressibility.
Equation of state for dense non-isothermal plasma
Authors: Gabdullin M T , Ramazanov T S , Ismagambetova T N
Published: November 2019

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

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

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.
Thermal conductivity of CO2 + R1234yf and CO2 + R1234ze(Z) binary gaseous mixtures at low pressure
Authors: Laptev Ya A , Tsvetkov O B , Pyatakov G L , Zainullina E R
Published: November 2019

Chlorofluorocarbons (CFCs) have been phased out under Montreal Protocol of 1987 as a result of ozone depleting potential (ODP). Carbon dioxide owing to the environmental benefits zero ODP, low global warming potential (GWP), no flammability was expected to replace the principal classes of refrigerants. The use of CO2 may require a total redesign of refrigeration units. Hydrofluoroolefins (HFOs) especially R1234yf and R1234ze(Z) has recently proposed as new generation alternative refrigerants. Because of their mildly flammability the mixing of CO2 and HFOs may offer a good alternative to meet the requirement of high cycle efficiency and not dangerous for human beings. A representation for the thermal conductivity of the mixtures of CO2+HFO’s at atmospheric pressure is developed. The thermal conductivity concerning the mixtures was estimated by Sutherland equation type and by Wassiljeva relation modified by Lindsey and Bromley. To apply this procedure the viscosity and thermal conductivity of pure HFC’s substances were established. To obtain these properties the theoretical approach by Mason, Monchick, Filippov and Golubev were used. The data were obtained at temperatures from 250 K to 360 K. The proposed technique was checked by the comparison with the experi-mental thermal conductivity data for the binary mixtures of R134a and R32 and for the triple zeotrop R407C. The agreement is satisfactory.
Analysis of thermochemical data of fatty acids and acetates on their base
Authors: Ovchinnikov V V , Kulakov A A , Maltseva S A
Published: November 2019

The heat of vaporization, combustion, formation, entropy in different phases and the heat of capacity of fatty carbonic acids and their acetates were analyzed and was determined that all functions of these types of compounds depend from the number of valence electrons N from which is excluded the sum of lone electron pairs g as represented in equations Δvap,f,c

H° = i ± f (N – g) and S° (Cp
) = i ± f (N – g). The coefficients f in the first equations is in the range 108 – 109 kJ⋅mol−1 electron−1, that corresponds to the same values f in the equations, which are related to combustion processes. Other coefficient i is different for each type of compounds. The received new seven equations can be used for the calculation of the same thermodynamic functions for other organic and especially bioorganic substances with fatty radicals.
Numerical and experimental study of a weakly conducting fluid motion, driven by a strong inhomogeneous electric field
Authors: Apfelbaum M S , Gadzhiev M H , Doludenko A N , Khromov M A
Published: November 2019

This work presents the results of numerical simulation and experimental studies of a weakly conducting fluid motion in a system of two electrodes “wire above the plane”.
A generalized model of the Kapitza resistance
Authors: Khvesyuk V I
Published: November 2019

This work devoted to a new generalized model of Kapitza conductance. At present, the problem of the development of the theory of contact resistances between solids is particularly relevant due to growth of nanotechnology, where it plays an important and sometimes main role in the heat transport. Presented model takes into all specified properties of acoustic waves. First of all, it is refraction and reflection of acoustic waves that caused simultaneously both longitudinal and transverse waves. Secondly, it is considered the phenomenon of total internal reflection, which makes a significant contribution to the Kapitza resistance. These facts totally change the formulation of the problem, especially, the boundary conditions on the contact surface (interface). Results shows a good agreement with the experimental data, better than in previous works.
Investigation of the diffusion of alloying elements in multicomponent alloy using the photometric analysis of the radiation brightness spectrum
Authors: Ermishkin V A , Mikhaylov D L , Minina N A , Belousov O K , Palyi N A
Published: November 2019

In this paper we consider the results of studying the diffusion of molubdenum and boron in the alloy G 35 (USA), in the chemical composition of which there were 12 elements, with the help of the method of photometric analysis of structural images (PHASI), developed in IMET RAS. PHASI method is based on comparison according to the differential scheme of the spectra of the brightness of the reflection of visible light from the fragments of the surface of the object under study and their images before, during and after heating. The study was performed in situ in a high temperature metallographic microscope. The digital camera allowed in a periodic mode to register the image of the investigated fragment of the sample surface. Analysis of the data obtained by the PHASI method made it possible to establish the time and radial dependencies of the partial derivatives of the concentrations of the first and second order alloying elements that appear in the diffusion equation. A complete analysis of the obtained experimental data made it possible to obtain temperature dependencies of the diffusion coefficients of chromium and boron.
Comparing different force fields by viscosity prediction for branched alkane at 0.1 and 400 MPa
Authors: Kondratyuk N D
Published: November 2019

Shear viscosity is one of the key subjects of molecular modeling studies since this quality is used in the development of lubricants. In this paper, molecular dynamics methods are used to compute viscosity at 298 K and 0.1 MPa, 400 MPa for 2,2,4-trimethylpentane for which experimental data are available. Three different force fields are compared by the ability to predict the shear viscosity coefficient at these two pressures.