bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prospects of Wasteless Technologies of Selective Alcohols Oxidation
Authors: Zhukova I Y , Papina E N , Tyaglivaya I N 
Published: April 2020

Abstract
The effect of aliphatic and heterocyclic amines on the selective oxidation reaction of alcohols by the catalytic system 4-acetylamino-2,2,6,6-tetramethylpiperidine-1-oxyl (4-acetylamino-TEMPO) - iodine was researched. Diethylamine, triethylamine, piperidine, 2,2,6,6-tetramethylpiperidine (pKa 11.01-11.12 ) and pyridine, 4-acetylpyridine, quinoline, isoquinoline ( pKa 4.8-5.4) were used for research. An almost waste-free method was developed for preparation esters from aliphatic alcohols by oxidizing in a two-phase medium CH2Cl2 - an aqueous solution of NaHCO3 by a two-mediator 4-acetylamino-2,2,6,6-tetramethylpiperidin-1-oxyl - iodine catalytic system, which allows selective oxidation alcohols in one stage. The results of the study may find application in the chemical, pharmaceutical and agrochemical industry, since the developed method is environmentally and economically beneficial, and the oxidation of alcohols in order to obtain various carbonyl and carboxyl compounds in these industries is one of the priority areas.
Development and Implementation of Methods for Behavioral Safety Audit Conducting in the Fuel and Energy Complex
Authors: Glebova E V , Volokhina A T , Vikhrov A E 
Published: April 2020

Abstract
The analysis of the accident and industrial injury statistics shows that the majority of accidents and industrial accidents (more than 70%) are caused by the mistakes of the operational personnel servicing the hazardous production facilities connected with violation of requirements of the organization and production of hazardous works. One of the priority directions of the state policy of the Russian Federation in the field of industrial safety till 2025 is the development of industrial safety culture, awareness of personal responsibility for a condition of industrial safety, formation of the intolerant relation to violations of safety requirements, in particular, due to implementation of scientific and technical achievements and the best practices. This study proposed a new approach to ensuring safety on objects of fuel and energy complex establishing rules of conducting the behavioral safety audit (BSA), assessment of identified hazardous actions and use of preventive measures. Within approbation of this new approach to safety ensuring we have made the procedure of mathematical processing of results of 264 conducted BSA on one of gas transmission companies. Implementation of approach boosts safety culture of production, prevention of the industrial accidents and accidents caused by unsafe behaviour and actions of workers.
Cleaning of Atmospheric Air from Organic and Inorganic Industrial Toxicants and Microorganisms by High-Tech Functional Sorbent
Authors: Evsina E M , Alikova T V , Zolotareva N V 
Published: April 2020

Abstract
The physicochemical and absorption properties of the new sorbent obtained by mixing finely ground 100 g of Portland cement - 500, 100 g of the molded glass of the Astrakhan region with 100 cm3 of 10% aqueous sodium chloride solution and forming granules of the required size (from 0.5 to 5 cm in diameter), the formed mass after setting and hardening is placed in running water and maintained until the water has a negative reaction to chloride ion, after drying at 80-850 ° C, the granules are placed in a 40% aqueous solution of diethanolamine (DEA) for 1 h, then the granules are transferred to a sieve, wherein the excess of DEA is removed, and the granules are dried in a stream of air (fan) at 20 - 400 C. From the physico-mechanical characteristics, the main ones are defined as follows: bulk density, water resistance, vibration wear, mechanical crush strength at T 105 ° and 300 ° C, conditional mechanical strength, abradability, grindability and particle size distribution. These indicators are interrelated and allow you to predict changes in the strength characteristics of adsorbents and sorption-filtering materials in the processes of their long-term operation. Experiments have shown that the sorbent strongly adsorbs DEA and DEA salts, which are not destroyed by water and are not diluted with acid solutions. Sorbent is used to purify atmospheric air from acidic gases and water vapor, such as hydrogen sulfide, sulfur dioxide, carbon dioxide and microorganisms. The results indicate high sorption properties of the sorbent, which allows purifying atmospheric air from acidic gases to below 0.01 MPC.
Combined Scheme Application for Liquid Hydrocarbons Pumping Through QMU
Authors: Ayupova A , Artemyeva E 
Published: April 2020

Abstract
For accuracy of quality parameters measurements and product sampling it is necessary to ensure that flow of hydrocarbons through QMU was enough to meet requirement of isokinetic condition of sampling device. Currently, this is achieved by using of pump or pumpless control circuit. This paper discusses advantages and disadvantages of these schemes, as well as an alternative scheme for pumping liquid hydrocarbons through QMU. Possibility of fluid pumping without a pump and flow control with pressure regulator is discussed and justified. The problem solution of ensuring equality of product speed in both branches of parallel pipelines is achieved by selecting such a ratio of cross-sectional areas of hole FP and collector, which creates a pressure difference between the QMU input and QMU output of the pipeline necessary to overcome hydraulic resistance in it at a speed equal to the speed in the collector.
Specific Features of the Composition of Petroleum from the Usinsk Oil Deposit
Authors: Korol I , Petrenko T , Chuikin D 
Published: April 2020

Abstract
The research studied petroleum from Permian-Carboniferous fields from the Usinsk oil deposit in the north-east of the Komi Republic, Russia, well-bores No. 5339 (middle production zone) and No. 2956 (upper and middle production zone). Permian-Carboniferous petroleum has high viscosity (up to 11980 MPa*s), density (up to 0.987 g/cm3), average grade of sulphur (up to 2.5% mass) and are hard to recover. The element, component and micro-element composition of the petroleum and its fractions was established. The share of vanadyl and nickel porphyrins was measured by chromatographic separation. The research has established that the petroleum and fractions from the Usinsk oil deposit are a complex mixture of hydrocarbons and hetero-organic compounds with an elevated aromatic level and with oxygen-containing compounds playing the most important part. Total content of micro-elements in the studied samples does not exceed 0.5% mass of the petroleum’s mass. The concentration of microelements in petroleum is reducing in this order: Cl, Ca, Na, V, Ni, Mg, Fe, Si, Ba, Cs, Cu, Zn, Mn, Co, Cd, P. The share of vanadyl porphyrins (VO-P) is higher than that of nickel porphyrins (NiP). The distribution of VO-P by fractions for the petroleum in both well-bores is the same and reduces in terms of resins-asphaltens-oils. The distribution of NiP does not have a clear correlation. This distribution can be associated with the chemical composition, thermodynamic and kinematic stability.
Occupational Risks in the Extraction and Processing of Mineral Raw Materials
Authors: Gorlenko N V , Leonova M S , Murzin M A 
Published: April 2020

Abstract
The aim of this paper was to assess the man-made risks arising in the process chain from the extraction of primary raw materials in the form of quartzite and its further processing into the final product in the form of silicon. As the objects of research, we chose quartzite extracting enterprises, Cheremshansk Quartzite Mine and Kremny JSC which processes quartzite into silicon. To assess the occupational risk, we applied the method of assessing the individual occupational risk (IOR) level developed by the Klin Institute of Occupational Safety and Working Conditions. As a result, it was established that, in general, the level of occupational risks in the extraction of quartzite corresponds to the “average” level of risk. The occupation of Screener was classified to have the highest level of IOR (0.2). For the most part, a significant contribution to the level of occupational risk for the considered occupations is made by the dust factor, as well as - for the occupations connected with the steering of large-sized machines - by general vibration. In the processing of quartzite, the IOR level corresponds to the “average” level of risk in most occupations. However, for some of the workers, the risk level is set to the “high” value. This is due to significant concentrations of dust in the air of the working area, as well as unfavorable microclimate parameters.
Analysis Risk Factors Forest Ecosystems the Krasnoyarsk Territory
Authors: Rihter E E , Taseiko O V 
Published: April 2020

Abstract
A database on indicators of forest ecosystems for risk assessment has been formed. The method risk assessment forest ecosystems in the conditions of intensive anthropogenic impact by the multidimensional method are developed. An example of environmental risk assessment based on ground-based observations is shown, forest ecosystems status indicators, space sensing obtained by remote sensing methods. Rationing factors were performed using the coefficient of the variation series. Combining heterogeneous data is carried out on a single normalized scale, taking into account the characteristics of authenticity and taking degree participation in each factor. With help cluster analysis the ranking territories performed. In the course data analysis for 2018, 4 clusters were identified, for each which priority risk factors are analyzed. The greatest contribution is made by climatic factors and high population density.
Temperature Field of the Permafrost Zone in Northeastern Siberia
Authors: Spektor V B , Shestakova A A , Torgovkin Ya I 
Published: April 2020

Abstract
The Northeastern Siberia includes the coasts of the Sea of Okhotsk, part of the North Siberian Lowland, the Central Siberian Plateau and the Lena Delta. Based on field measurements and calculations, this study characterizes the regional distribution of permafrost temperature in the layer of zero annual amplitude (ZAA). Permafrost temperatures vary over a wide range from -2 to -13°C. Analysis of ZAA temperatures indicates that permafrost is transient in much of the study region. In its northern part, especially where diluvial deposits are present, temperature profiles are isothermal or have inverse (negative) gradients. The temperature field in the areas of pre-Quaternary carbonate rocks is characterized by wide scatter of the values and often by higher ZAA temperatures. This is due to the karst process in carbonate rocks which is associated with heat release. This process likely occurred below the bottom of post-catastrophic basins, resulting in greater heat flow and disturbance of the equilibrium state of permafrost. The layers of dolomite flour over the pre-Quaternary carbonate rocks provide additional evidence of the high water contents in upper permafrost during deposition of the diluvial sequence. Temperatures below ZAA in these areas may reach -4°C, while similar settings without carbonate rocks have temperatures below ZAA as low as -8 to -11°C. This study has confirmed the high variability of ZAA temperatures in the region.
The Prospects of Expanding the Raw Materials Source of Gold-Silver Ore Occurrence in Sentyabrskoe SV (Chukotka Autonomous Area)
Authors: Grebennikova A A , Sayadyan G R 
Published: April 2020

Abstract
The Chukotka autonomous area of Russia holds one of the leading positions in Russia in the gold mining. Various formational types’ deposits are known to this region. Among the most industrially interesting types are bonanza gold-silver sites in Kupol, Dvoinoye, Sentyabrskoe and many others. This article studies the prospects of extending the raw materials’ source of the gold-silver ore occurrence in Sentyabrskoe on the basis of its comparison with the known sites of this type.
Reliability of Billboards Fixing Constructions in the Operational Period
Authors: Kaverzneva T T , Nikolaeva I P , Idrisova J I , Solovev D B 
Published: April 2020

Abstract
In the article the control actions providing reliability of billboard fastening during the whole term of operation is proved. Also correction of the operational period of billboard fixing constructions is justified. The example of testing calculation of a billboard rack diameter, which satisfies the permissible values of tension in the rack basis under loading of wind force is given. Due to the frequent cases of billboards falling under the wind load influence in the different cities all over the world, inspection actions for control of thickness of supporting rack are offered.
Development of the Theoretical-Practical Model of Protection of the Means of Transport of Radioactive Materials
Authors: Tumanov A , Solovyov A , Kulinkovich A , Tumanov V 
Published: April 2020

Abstract
Ensuring the safety of transportation of radioactive materials is of great importance due to the presence of the potential risk of damage to people, the environment and property during transportation, loading and unloading operations and intermediate storage. This article describes the means of storing liquid radioactive waste, as well as the process of their transportation. During the study, emergency situations during the transportation of LRW were considered. A security model has been developed for the storage of radioactive materials during multimodal transport.
Vapor Recovery Unit of Gasoline from the Tanks of Filling Stations with Gas-Dynamic Cooling
Authors: Vlasenko V S , Karakozov A A , Perveev A A 
Published: April 2020

Abstract
This study presents a gasoline vapor recovery unit of a gas station, which is based on a vortex tube and a shell-and-tube heat exchanger. The calculation of system is made and technological scheme is presented. Shown effectiveness of the device and drawn conclusions about its rationality
Turbidity Caused by the Construction of a Bridge in the Water Extraction Zone
Authors: Seleznev V A , Rahuba A V , Selezneva A V 
Published: April 2020

Abstract
The article considers turbidity in a water storage basin during dredging in water extraction zones for household and drinking needs. Turbidity zones are calculated with the help of a math model based on the solution to the shallow water equations in the advective diffusion equation for impurity distribution. The model was verified on the basis of a field experiment in the Kuibyshev water storage basin. The data on additional turbidity in the water extraction zone collected with the help of a suction dredge shows that the turbidity is higher than the maximum allowed concentration (MAC), but when a crane boat is used, the calculated value does not exceed MAC.
Assessment of Air Basin Pollution within the Limits of the Technogenic System (Dalpolimetall) Impact Using Mathematical Modeling
Authors: Filatova M Yu , Krupskaya L T , Golubev D A 
Published: April 2020

Abstract
The article presents the results of research of air technogenic pollution within the limits of the natural-mining system impact formed by Dalpolimetall mining-metallurgical enterprise activity in the Primorsky Krai. Its development is due to intensive polymetallic ore development and accumulation of significant amount of its processing toxic waste, stored in two tailing dumps, located at the area of 80 hectares, withdrawn from the forest land fund, their volume being 32.2 mln tons. The studies found that in general the waste on the surface of the tailing dump is of the second class of danger (high-hazard), which is currently in the stage of active formation, being a powerful negative impact factor for the environment. The study of the air pollution degree, carried out by gas survey on transversal profiles, shows that the largest number of different heavy metal compounds is contained in the dust selected for analysis near the tailing dump. Its maximum concentration, reaching 86 MAC, was revealed near the concentrating factory. The average concentration throughout the territory of the object under study is 38 times higher than the allowable limits. High concentrations of carcinogenic elements (arsenic, chromium and antimony) are found in the dust samples. The assessment of the air basin impact carried out by the method of computation monitoring using GIS-technology and the Ecologist Software, allows to assert that its pollution by mineral processing waste within the limits of Dalpolimetall impact in Dalnegorsk refers to an extremely high level for toxic dust, heavy metal compounds and sulfate-ion aerosols. The results of the research of air basin technogenic pollution using mathematical modeling allowed to reveal spatial and temporal regularities of the main pollutants distribution.
Behaviour of the Ice Cover under the Conditions of Flexural-Gravity Resonance with the Pair Movement of the Load
Authors: Zemlyak V L , Vasilyev A S , Rogozhnikova E G 
Published: April 2020

Abstract
The nature of ice cover failure technology implemented with amphibian hovercrafts (AHC) is represents generation of a wave system in an ice cover under the effect of moving load on the ice cover. If gravity wave in water accompanies flexural wave in an ice plate, this combination of waves will be called flexural gravity wave (FGW), the speed of moving load υc equal to the speed of FGW propagation will be called critical. However, during the implementation of ice breaking works by single (AHC), AHC’s parameters may appear insufficient for failure of the ice cover of specified thickness at specific ice conditions. In these cases, efficiency of ice breaking works may be increased by simultaneous use of several hovercrafts, i.e. by interference of FGWs generated by hovercrafts. This work is dedicated to research of the ice cover deformation during the motion of several (paired) loads over it. a comparison of the theoretical and experimental data obtained confirmed the operability of the selected criterion for the failure of the ice cover, which allows it to be used to develop practical recommendations for use FGWs generated by several loads to failure the ice cover. Original results obtained.
How Adding Wood Dust Affects the Properties of Composite Construction Materials
Authors: Cherkasova N G 
Published: April 2020

Abstract
Composite materials based on wood dust are promising construction materials that have recently gained traction in the market. Their success is attributable to the benefits such materials represent for construction: they are eco-friendly and resistant to atmospheric effects; they are well-disposable and easy to machine. Utilizing wood dust is essentially recycling the waste of woodworking, furniture-making, and lumbering industries, as well as the waste associated with the use of low-grade wood. The present paper covers the processes that occur in the structure of a composite materials when using abrasive wood dust as a filler. The research team has made pilot samples of various composition; analysis revealed the composition affected such properties as density, flexural strength, and water absorption. The effects were further analyzed to attribute them to specific mixture components. Refining the production technology and the recipe is one of the key objectives of producing and applying constructional composites today. Maximizing the performance while reducing the energy costs and the production costs requires a focus on rheological properties. The properties of a composites material mainly depend on the type and properties of its organic filler. Understanding that is fundamental to optimizing the composition, i.e. to finding such filler that will provide sufficient strength at a maximum fill factor. It is also known that using fillers makes the composition significantly cheaper.
Analysis of Methods for Determining Emissions from Oil Storage in Russia and the United States
Authors: Levitin R E 
Published: April 2020

Abstract
There are different approaches to the standardizing of hydrocarbons’ emissions in Russia and the USA. In Russia there are levels of techniques of vaporizations’ determination, of ecological standards of emissions, there are norms of natural losses. In the USA the technique is identical at different services. The Russian techniques are much like to American. Some differences and uncertainties in the emissions’ determination by different techniques are presented in the paper.
The Research and Well Performance Simulation under Conditions of West Siberia
Authors: Levitina E E , Mamchistova E I , Nasyrova A I 
Published: April 2020

Abstract
The paper proposes a new method of calculating the pressure at the pump intake, taking into account changes in the density of the gas-liquid mixture in the well depth. An algorithm for performing the pressure calculation is presented. Graphs of pressure distribution in the well depth with different gas content in comparison with the traditional method for calculating pressure are given. The importance of taking into account the physical properties of gas depending on the depth was proved.
Development of the Underwater Robotics Complex for Laser Cleaning of Ships from Biofouling: Experimental Results
Authors: Bykanova A Yu , Kostenko V V , Tolstonogov A Yu 
Published: April 2020

Abstract
Periodic cleaning of a hull from biofouling provides high efficiency motion of a vessel. Inspection and cleaning of the underwater part of the vessel afloat is usually carried out by divers aimed with an underwater video system, non-destructive devices for hull structures monitoring, as well as tools for cleaning surfaces from biological fouling and corrosion products. The aim of the study was to develop a new technical tool for remote survey and cleaning of vessels based on the remotely operated uninhabited underwater vehicle (ROV) with build-in underwater laser cleaning equipment. As a result of the research, the prototype of an underwater robotic inspection and laser cleaning system for vessels afloat was designed and developed. The experimental results of the motion control system of the ROV with a hybrid propulsion system both in air and under water are presented. The efficiency of the laser cleaning equipment in stand-alone mode and as part of the vehicle was confirmed. The technical solutions obtained during the development of presented cleaning system allow efficiently and safely inspecting and cleaning the hull without docking of the vessel to be conducted.
Recycled Sorbents for Wastewater Treatment
Authors: Pugacheva I N , Zueva S B , Molokanova L In 
Published: April 2020

Abstract
The today’s continuous industrial growth of major industrial centers has caused the discharge of heavy metal-polluted wastewaters to skyrocket. Improperly treated wastewater may reach natural water reservoirs, where heavy metals will accumulate in water and bottom sediments, resulting in secondary pollution and thus deteriorating the ecological conditions. Thus, it is imperative to improve the existing wastewater treatment technologies and invent new ones, as well as to find new efficient sorbents. Meanwhile, a variety of enterprises generate waste that could be used for adsorption. For instance, the textile industry generates considerable amounts of pulp-containing waste that could be used to make promising sorbents. The paper presents a method of producing powdered sorbents from pulp-containing waste of textile industry. The team researched how the pH of thus produced sorbents and the mixing time affected the adsorption of heavy metals (nickel). The finding is that the produced powdered sorbents are suitable for tertiary wastewater treatment.