bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improving of closed die-forging of transport and marine fasteners “wing nut”
Authors: Kukhar V , Klimov E , Chernenko S , Markov O , Anishchenko O , Prysiazhnyi A 
Published: October 2020

Abstract
The “wing nut” is a widespread transport and ship fixture designed to locking of hatches, covers and portholes. A more advanced closed die forging for the “wing nut” forgings of transport fittings was proposed with preforming by new method of bulk buckling of billet with upsetting ratio (height to diameter ratio) of 4.2...4.4. The billet and process calculation were performed based on results of researched and a new die forging was tested on a screw friction press. The results of experimental studies conducted on model lead billets at room temperature, and steel billets heated to 1180 °C, confirmed the increase in the accuracy rate of the billet material utilization ratio (one forging mass to one billet mass ratio) from 0.519 to 0.734 and metal savings up to 41% in comparison with the basic die forging without preforming of billet. It is shown that the introduction of a preforming by bulk buckling operation improves the forgings macrostructure (grainflow) even for cases the initial billets are buckled to folding defect formation, because with the further finishing die forging of semi-finished work-pieces the folding defect is displacing (or extruding) into flash. The improved die forging process and recommendations are accepted for implementation in the industry and the direction of reducing the cost of repair work for transport is noted.
Selection of the reagent to neutralize hydrogen sulfide and methyl-, ethylmercaptans in oil
Authors: Kuryakova Tatyana , Mezhueva Larisa , Uzun Konstantin , Tamoshina Olga , Beregovaya Natalia 
Published: October 2020

Abstract
Laboratory studies of 2016 on the residual content of light mercaptans at the loading point revealed an excess of the mass fraction of methyl- and ethylmercaptans in the prepared oil of the Borodino field. The studies stated that the most effective results on the residual content of mercaptans in purified oil are achieved by adding the reagent-neutralizer to degassed oil after the second stage of separation. Also, the tests proved that water in oil has an effect on the flow of reaction. The action of the reagent-neutralizer takes place at the “oil-water” phase boundary, the dispersion contributes to the strengthening of mass interchange reducing the response time of the neutralizer with oil. The mode of supply of the reagent-neutralizer should be continuous as when the supply of the reagent is ceased, the process of neutralizing hydrogen sulfide discontinues. The laboratory tests made it possible to select the best neutralizer Desoulfon-SNPCH-1200, to determine its minimum specific consumption and the temperature of heating oil. The application of this reagent-neutralizer will allow doing the effective oil preparation at the loading point of the Borodino field. The amount of Desoulfon-SNPCH-1200 needed to neutralize the mercaptans depends on their content in oil and the required degree of reduction. The usual proportion in processing is 4-5 ppm of Desoulfon-SNPCH-1200 at 1 ppm of mercaptans.
Efficiency of electromechanical treatment of VT22 Titanium Alloy in the manufacture and repair of transport components
Authors: Yakovlev S , Nuretdinova J , Mishanin A 
Published: October 2020

Abstract
The high efficiency of VT22 titanium alloy hardening by electromechanical treatment in the manufacture and repair of transport components is determined. The experiments on determining the heat resistance of VT22 titanium alloy structures hardened by electromechanical treatment showed that their maximum operating temperature is limited to 550 °C. When transport operating in environments with higher temperatures, recrystallization processes begin in hardened areas.
Obsidian expansion kinetics
Authors: Safaryan A , Sarkisyan T , Paytyan T , Baghdagyulyan A 
Published: October 2020

Abstract
According to the modern terminology, the term «perlite» means natural glassy mountainous rock that has the expansion feature when heated causing high porous pumice-like material. Scientifically, in the first place, perlite (containing different quantities of water) itself that is hydrated volcanic glass, in the second place, pechstein that is even and fairly strong hydrated glass, in the third place, obsidian that is glass containing little water, in the fourth place, the so-called porous perlite that is scientifically regarded as little porous pumice, can be pertained to technical perlite. Thus, in Armenia according to technical significance «perlite», glassy mountainous rock, divided into perlite and obsidian. The igneous rock consists of volcanic glass the water content of which does not exceed 1%. In Armenia, in ancient times obsidian was expanded and used in the upper layers of the dome of the three-floored temple Zvartnotc. Expanded obsidian can be used as artificial porous aggregate for lightweight concrete of different designation. Obsidian is expanded at temperature of 1050-1150°C. The lowest average density of 200-350 kg/m3 (in a piece) is obtained at thermal processing of obsidian with the coarseness from 5 to 20mm and the duration of 3-10 minutes. On the basis of expanded obsidian heat-insulating and acoustic materials can be developed: lightweight and cell concrete and plastering with cement and gypsum.
Non-Markovian processes in cement systems
Authors: Sarkisov Yu S , Naumova L B , Gorlenko N P , Debelova N N 
Published: October 2020

Abstract
Non-Markovian processes occur in nature in the form of the structural organization laws of space-time objects at different scale levels. Non-Markovian processes preserve the memory of the past state of the system, and its further evolution is largely predetermined by information about previous stages of development. This is typical for solid-phase processes, ceramics, metals and alloys, water and aqueous solutions, and other inorganic objects. Non-Markovian process indicators are the natural harmony numbers, Fibonacci numbers and golden ratio. The paper presents evidence of non-Markovian process occurred in cement systems. It is shown that during the formation of the fine-grained crystalline structure the cement system is capable to produce such elements and generate a low-frequency current, which simulates the intensity and duration of the processes. It is shown that the active phase of self-organization in cement systems is of temporary nature as the energy from outside sources is limited.
Monitoring alumina content in cryolite-alumina melt
Authors: Suzdaltsev A V , Nikolaev A Yu , Pavlenko O B , Zaikov Yu P 
Published: October 2020

Abstract
Alumina content in electrolysis cells for aluminum production is one of the most important and poorly controlled parameters. The alumina is delivered to the cell by means of an alumina automatic feeding system, adjusted to the amperage or to the voltage alteration. However, a change in the alumina content in the cryolite-alumina melt depends not only on the current; and the voltage is not a parameter that responds only to the alumina amount in the melt. In order to check the current value of alumina content as well as the dissolution of alumina in industrial electrolytes (NaF-AlF3-CaF2-Al2O3), a novel electrochemical sensor was proposed. It was comprised of a carbon working electrode and a counter electrode interacting with aluminum. The sensor was easy to manufacture, and it allowed reducing the measurement error associated with back reactions at the working electrode. The novel approach was considered on an ex-ample of dissolving the alumina in the NaF-AlF3-(5 wt%)CaF2 melt ([NaF]/[AlF3] = 2.1 mol/mol) containing alumina (Al2O3) in amount of 0.69-4.51 wt% at 970 °C in conditions of natural and forced convection. It was found that the alumina solubility in the studied melt was 4.51 wt%. Depending on the initial content of alumina in the melt and convection conditions, its dissolution rate varied up to 0.36 mol/s·m3.
Research of properties of zinc-iron coating when restoring places of indigenous supports of engines of transport and technological machines
Authors: Eltoshkina E V , Ilyin P I , Rozhkov D M , Svirbutovich O A 
Published: October 2020

Abstract
This article presents the results of experimental studies to determine the relationship between electrolysis modes and the properties of electroplated coatings, which are used in mathematical modeling of the dynamics of the electrolytic process, described by a system of ordinary differential equations due to the complex relationship between the kinetics of chemical reactions, hydrodynamics and mass transfer in the electrolyte stream, the kinematics of electrode plates, as well as the influence on all these processes of the electric field of the pair “anode-cathode”. At the same time, a series of field experiments to restore the seats of the main bearings of the cylinder blocks with galvanic coatings served as the experimental base. The final result of this study is the procedure for constructing an optimal resource-saving mode of deposition of galvanic coatings, which are a zinc-iron alloy.
Influence of losses in steel on the specific values of field regulated reluctance machines and traction electric drive control system
Authors: Semenova M S , Zhuravleva L A 
Published: October 2020

Abstract
The article considers the influence of losses in steel of Field Regulated Reluctance Machine (FRRM) on its specific values and the electric drive control system. Two methods of their determination are analyzed: analytical and field. The second method is preferable, since it requires less information about the properties of materials with the same accuracy in determining losses. It is shown that losses in steel shift the optimal control angle of the stator current vector towards the q-axis of the electric machine. The angle offset when the load is increased to three times is 5 electrical degrees. It is shown that when the load current increases, the losses in steel to eddy currents and hysteresis are equally dependent on induction. With three times the load, losses increase by 60%. As the speed increases, the eddy current losses from the current increase squared, and the hysteresis losses are almost linear. This indicates a different degree of dependence of the loss components on the speed. Regression dependences of losses on the load current and speed of FRRM are given.
Multisystemic damage to mitochondrial ultrastucture as an integral measure of the comparative in vivo cytotoxicity of metallic nanoparticles
Authors: Sutunkova M P , Minigalieva I A , Panov V G , Riabova Iu V , Shur V Ya , Zubarev I V , Shishkina E V , Privalova L I , Katsnelson B A 
Published: October 2020

Abstract
Vehicles emissions of nanoparticles is a one of the major threat to humans in the modern conditions. Subchronic intoxication was induced in outbred male rats by repeated intraperitoneal injections of lead oxide, zinc oxide and copper oxide nanoparticles separately, or in three binary combinations, or in the full triple combination. Based on electron microscopy results, this paper considers the usefulness, feasibility and informativity of an approach based on a generalized semi-quantitative assessment of toxic damage to mitochondria in various organs using partial or complete destruction of cristae as an index of damage. The adequacy of such assessment is confirmed by its consistency with the previously published data on the relative and combined toxicity of nanoparticles of the above species and high protective efficacy of a complex of bioprotectors estimated by a great number of functional and optical-microscopy morphometric indices.
Improving the working process of a modernized transportable drum mixer
Authors: Fudin K , Teryushkov V , Savinykh P , Konovalov V , Chupshev A 
Published: October 2020

Abstract
The aim of the research was to increase the efficiency of the modernized (by replacing the blades) transportable drum mixer by intensifying the mixing stroke by improving its design and optimizing the mixing time of the components. The research methodology provided for a regression analysis of experimental results to establish the function of the influence of the mixing duration on the coefficient of variation. The best quality of the mixture is observed in the mixing time interval of 60-300 sec, with an optimum of about 120-140 sec. The average value of the coefficient of variation in this case corresponded to 10.9%. Due to the inconsistency of the results of a one-stage mixing with technological requirements for the quality of the mixture, the function for a two-stage mixing is justified. The optimum ratio of the pre-mix filler to the control component is about 4. The mixing time of the second mixing stage should correspond to 180 seconds. Moreover, the unevenness of the mixture (10%) meets the technological requirements. Compared to the typical design of the mixer used, a 7% improvement in the quality of the mixture is observed.
Strength characteristics and effectiveness of Scotchkote® 2400 liner used for rehabilitation of utility potable water transport pipelines
Authors: Primin Oleg 
Published: October 2020

Abstract
The article considers the problem of potable water transport pipelines rehabilitation. The article analyzes the results of the experiments for determining the strength characteristics of Scotchkote® 2400 protective corrosion resistant coating of pipes, that were carried out in the laboratory of the Water Supply and Sanitation Department of the Moscow State University of Civil Engineering with Instron 3345 electromechanical tensile testing machine. The effectiveness of Scotchkote® 2400 liner relative to restoring and improving the strength and hydraulic characteristics of worn water pipelines. The author comes to the conclusion that Scotchkote® 2400 liner is a substantial alternative to cement-sand and other internal coatings, since in many respects it surpasses them owing to the ability of colmatage sealing of large diameter holes; high wear resistance; smooth surface; ability to endure high hydraulic pressures. The coating does not overlap service connections and only slightly reduces the diameter of the restored pipelines. Based on the conducted research the characteristics of Scotchkote® 2400 liner spraying technology are presented compared to the basic methods of trenchless pipeline reconstruction. Mathematical processing of the results of experimental studies of the physical and mechanical characteristics of Scotchkote® 2400 liner is given. As a result of the studies, the calculated values of the protective coating thicknesses for partially worn and worn out pipelines have been obtained and recommended.
Electrical control scheme of the machine for isolation of toxic ergot from rye grain
Authors: Saitov Viktor , Gataullin Rinat , Saitov Aleksey 
Published: October 2020

Abstract
The grain heap contains, in addition to high-grade grain, various impurities, which include ergot toxic sclerotia. Poisonous ergot sclerotia most often affects rye grains. The duration of flowering and the structural features of its flowers explain the strong susceptibility of rye to ergot. The use of various machines for cleaning grain does not give positive results in the isolation of toxic ergot from rye grain due to the proximity of its properties and the properties of the crop being cleaned. Purification of seeds from ergot sclerotia, having a density lower than the density of rye grain, is possible in an aqueous solution of salt. To mechanize the release of ergot from rye grain by density in an aqueous salt solution, the development of an appropriate device is an urgent issue. When creating a machine for the allocation of toxic ergot, simple in design and maintenance, the question arises of developing an electrical circuit for controlling the working bodies. To drive the working bodies of such a machine, a simple single-phase electrical circuit for controlling a three-phase electric motor has been developed. The developed electrical control circuit made it possible to ensure reliable and trouble-free operation of the electric drive of the working bodies of the machine for the extraction of toxic ergot from rye grain during experimental studies. The installation of the control circuit has an electrically safe design, convenient for operation, and the protection elements of the circuit exclude a person from electric shock and fire.
Features of GIS application in agriculture and logistics
Authors: Sangirova Umida R , Yunusov Iskandar O , Ahmedov Ulugbek K , Namozov Jurabek A , Dustmurodov Ganiboy G , Khakimov Rashid 
Published: October 2020

Abstract
GIS - geographic information systems is a product of modern technology, designed for visualization and analysis of everything around us, also for the storage and analysis of data. The agricultural sector, where the key link is land, has a connection with geographic visualization, namely, there is a need to compile maps to promote transport and analyze them. Before the introduction of GIS, tables, plans and schemes provided on paper were used. In this case, it was hard to reconcile all the data with each other, and in case of a change in an indicator, it was necessary to redo everything all over again. In maps created with the help of GIS along the land itself, there are such layers as rivers, roads, settlements and much more. It all depends on the quantity and characteristics of the data provided. Using just an ordinary electronic map of the area, with the help of data, you can create a blank map, topographic or thematic map. GIS is becoming an increasingly integral part of our lives and agriculture. For an ordinary farmer, for example, there are many advantages of GIS. One of these advantages is that, when buying or renting a land plot, he can look at the electronic map in the cadastral offices, which will take into account the location of the plot, the location of passing channels, soil structure and so on. The second advantage is that the map will show all the advantages and disadvantages of the site, such as soil quality, climatic conditions, this will lead to the correct selection and distribution of crop rotation, which will help reduce the cost of fertilizers, machinery and labor. All these aspects are described in more detail in the article.
The special place of walnuts in the world market and their transportation (case study of Uzbekistan)
Authors: Sangirova Umida , Khafizova Zulfiya , Kurbanova Durdona , Rakhmonova Barno , Kadirkhodjaeva Farida 
Published: October 2020

Abstract
Interest in nuts has never faded, and with it grew interest in the transportation and transportation of dried fruits. In recent years, the nut has become an engine of the economy. Walnut crops are popular all over the world, in connection with this there is an increasing need for proper transportation, delivery of nuts to the consumer, without losing their taste. The topicality of the article is based on the interest of the nut industry in many countries, including the Republic of Uzbekistan. The article reveals the current state of nut plantations in Uzbekistan, the ongoing reforms in this industry and their results. The nut business is analyzed, recommendations on obtaining the maximum profit with the minimum losses are given.
Improving the thermal efficiency in heat exchangers of transport vehicles
Authors: Haibullina A I , Hayrullin A R , Ilyin V K , Savelyeva A D 
Published: October 2020

Abstract
The heat exchangers are widely used in the cooling and heating system of transport vehicles. Therefore, enhancement of thermal efficiency of heat exchangers can lead to energy savings of transport vehicles. To increase the efficiency of heat transfer equipment, different methods of enhancement of heat transfer are widely used. However, when methods of enhancement of heat transfer employed, hydraulic resistance also increases. Thus, to evaluate the effectiveness of the method of enhancement of heat transfer, thermal efficiency is used. In this paper, we consider the effect of tube pitch with a different configuration of tube bundles on the thermal efficiency of enhancement of heat transfer by pulsating flows. Results obtained for four typical tube array arrangements (triangular staggered, rotated triangular staggered, rotated square staggered, square inline). The tube pitch ratio of the tube bundle was 1.25, 1.5, and 1.75. Results presented the effect of pulsations in tube bundles on the thermal performance ratio at the same Reynolds numbers and thermal performance ratio at the same power required for pumping the coolant in steady and pulsating flow. It is found that the change in tube pitch has a different effect when the thermal performance ratio was evaluated with the same Reynolds number and at the same power required for pumping. With an increase in tube pitch, the thermal performance ratio at the same Reynolds numbers can either decrease or increase depending on the tube array arrangements and parameters of the pulsating flow. Higher values on the thermal performance ratio at the same Reynolds numbers and at the same power are mainly observed for the square inline array, which may change depending on the tube pitch and parameters of the pulsating flow. The maximum value of the thermal performance ratio at the same Reynolds numbers was 0.623 at the tube pitch of 1.25 and square inline array. The maximum value of the thermal performance ratio at the same power was 1.92 for tube pitch of 1.75 and square inline array.
The logistics approach to perspectives for the digital technologies in Russia
Authors: Barykin S , Shamina L 
Published: October 2020

Abstract
Financial technologies (fintech mechanism), along with regulatory technologies (RegTech mechanism), being innovative socio-economic phenomena dynamically developing both abroad and in domestic conditions, can be considered as financial and information categories arising from the formation of needs of the financial market in adaptation mechanisms to the conditions of the new technological order of Industry 4.0. The purpose of the study is to identify the role of digital finance in the domestic financial system in the context of the digitalization of the economy and the directions of development of legal regulation of modern financial technologies. As a result of the study, prospects for the further development of the FinTech and RegTech mechanisms in the Russian economy were identified, taking into account the features and prospects of the development of the FinTech and RegTech mechanisms in Russia. It was shown that the digital financial cube can be expanded by including a new characteristic of digital assets, reflecting the degree of openness of industrial enterprises in the new technological structure of Industry 4.0. As a result, it could be predicted the interpenetration of both technologies of the financial sector of the Finnet direction and BIM technologies of the Technet direction with those technologies being different in their nature. Fintech mechanism could be treated as an effective instrument for managing the financial resources from the point of view of the logistics methodology. With the purpose of the logistics theory being the development of methods and models of effective distributing the financial flows, the logistics approach to managing the financial resources considers the calculation of expenditures caused by financial decisions regarding the investments, debts, deposits and especially operational activities. The main problem of logistics approach relates to the assessment of interconnection between the material resources flow and cashflow. However, the digital financial technologies enable to make various appraisals being immanent part of logistics models.