bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ecogeochemical evaluation of soils under conditions of technogenesis
Authors: Sarapulova G I 
Published: January 2020

Abstract
The distribution of total forms of heavy metals Cu, Cd, Ni, Pb, Zn, Co, Hg, and As in technogenic soils has been evaluated using geochemical research methods. Diagnostic indicators of damage of soil natural properties in the area of technogenesis are revealed. Statistically significant empirical dependences toxic elements migration on the buffer properties of soils (pH, N, Corg) and salinity factor of the territory are obtained. It is shown that in the zone of industrial objects in the soil surface layer, lateral technogenic geochemical pollution modules can be formed at depth down to 30-50 cm. This should be taken into account when evaluating the environmentalrisk of a territory and in the environmental control of soil pollution.
Occupational safety training in the process of knowledge assessment
Authors: Sevastyanov BV , Lisina E B , Selyunina N V , Shadrin R O , Shalamova A V 
Published: January 2020

Abstract
The article is devoted to the occupational safety training using the exercise system formed as a test: chain and test, as well as matrix test tasks, which can be included in the structure of these systems. The ability of testing to diagnose competencies is also addressed to in this article.
Composite sorbents based on waste from the crystalline silicon production and biochar
Authors: Timofeeva S S , Leonova M S , Gorlenko N V , Chang Jih-Hsing , Cheng Shu-Fen 
Published: January 2020

Abstract
The aim of this paper was to create a composite porous material based on waste from the crystalline silicon production and biochar from agricultural waste for sorption wastewater purification from copper. In the paper, we proposed a method for pelletizing fine crystalline silicon (gas treatment waste) and biochar from agricultural waste using liquid glass. The choice of liquid glass is due to the fact that this substance has high adhesive properties for the formation of durable composites, as well as an excess of alkali, which contributes to the exothermic reaction and the evolution of hydrogen gas upon the addition of finely divided silicon, as a result of which the composite material acquires a porous structure. Using the optical emission research method, we found that the samples of the prepared sorbents mainly consist of both macropores and meso- and micropores, the dimension of which depends on the ratio of components. In the course of research, we identified the optimal ratios and studied the mechanical and sorption properties of composite materials.
Specialized alarm-initiating device for early detection of coal self-ignition
Authors: Timofeeva S S , Smirnov G I , Timofeev S S , Latysheva S V 
Published: January 2020

Abstract
The existing methods of fire detection are based on the registration of physical phenomena associated with the processes of combustion or smouldering, such as elevated temperature, the release of combustion products, changes in the chemical composition of the air, thermal radiation. Sensor elements of the devices detecting those features stay at a distance from the source of ignition. This result in postponed time of fire registration in comparison with its occurrence. Accordingly, the more time it takes, the more significant damage a fire can cause. The work studies the design of alarm-initiating device developed at Irkutsk National Research Technical University. The device is to detect the evidence of incipient self-ignition at the stage of self-heating before a fire starts, and it is applicable to coal and other substances that a likely to ignite spontaneously. The main feature of the invention is that the temperature measurement and air sampling are carried out directly in the places that are at more risk of self-ignition. In addition, the device is energy-independent due to the original design of the power supply element. Moreover, the measurement of several parameters of the fire environment significantly increases the reliability and credibility of the self-ignition detector.
Current assumptions of characteristics for different-type Siberian water objects in modeling and forecasting of their aquatic-ecological state
Authors: Tskhai A A 
Published: January 2020

Abstract
The application of mathematical estimates and models for different types of Siberia water objects in extrapolation cases is discussed. The anthropogenic component of hydrochemical runoff of the Ob river is assessed for different time periods. A prediction algorithm for reservoir ecosystem state consists of the determination of input data sets, the use of internal model parameters for the reservoir - analogue and simulation. Developed for the water bodies of the Upper Ob basin, this algorithm is used in assessment of ecological consequences under river regulation.
Justification of underground gold placer development parameters for the Konevinsky deposit
Authors: Vasilyev D S , Pavlov A M 
Published: January 2020

Abstract
The Konevinsky deposit is located in the Eastern Sayan highlands in a poorly developed area of the Far North. The deposit is being developed by Khuzhir Enterprise LLC. The deposit is a thin steeply dipping vein characterized by the extremely irregular metal content and a low ore-bearing coefficient. Ore is extracted using the underground method at a depth of 300 m in the permafrost zone. Steeply dipping ore deposits with a complex morphology and a discrete distribution of metal are developed using the ore shrinkage system which involves longwall stoping without supporting enclosing rocks. Longwall stoping with a small extraction space eliminates rock cleavage along the cracking system that results in high dilution of ore (up to 67%). Due to this fact, the existing mining geotechnology of balance reserves development has become unprofitable and production has been suspended. The purpose of this article is to identify new parameters of the balance reserve extraction method that will improve quality of ore and increase profitability of metal production. Studies of geological environment and analysis of causes of ore quality deterioration showed that along with the excessive sticking of wall rocks under the minimal excavation width of 1m, ore dilution is affected by inrushes from block sides with an increased rock fracturing and an internal chocking with low-grade ores. These disadvantages can be eliminated using sublevel drifts, the breast-and-bench method and a descending order of reserves excavation. The article substantiates and develops parameters of the system which can increase ore production quality without increasing production costs.
Processing of agricultural waste in the Penza region
Authors: Goryachev V , Golobokov S , Brostilova T 
Published: January 2020

Annotation
In this work we considered the impact of uncontrolled waste of the agricultural sector on the biosphere. We estimated assessment of the energy potential of the Penza region and its technologically utilization. We compared the obtained data with the volumes of energy supplies. We carried out the analysis of existing technologies of processing and utilization of agricultural waste. In this work we studied the influence of various operational factors on the efficiency of processing different types of waste and the utilization of the resulting fuel. We issued recommendations for the introduction of new technologies and effective utilization.
Problems of environmental management on Russia’s coasts in the context of global sea level rise
Authors: Kholoptsev A V , Podporin S A 
Published: January 2020

Abstract
This study addresses some issues related to environmental management on Russia’s coasts in the context of ongoing global warming and subsequent sea-level rise. The attention to this problem is drawn due to the great extent of Russia’s coastline and high economic potential of certain coastal zones, inundation of which would be detrimental for the economy and the population dwelling there. The research seeks to answer the question as to how seriously global warming contributes to sea-level rise in Russia’s seas and whether or not highly developed coastal zones may be threatened. The study is primarily aimed at identification of statistical correlation between sea-surface temperatures, influenced by global warming, and variations in sea topography that can possibly lead to inundations. As a secondary goal, the areas exhibiting highest sea-level rise rates in the modern period are revealed. The results obtained show that most of the economically developed coastal zones are unlikely to face serious risks of inundation in the near future, however certain areas do need close attention, among them being the seacoasts of Kaliningrad Oblast due to high rates of mean sea-level rise and northeastern coasts of the Sea of Azov due to possible intensification of surge effects. Based on the findings, measures to deal with the potential inundation risks are discussed.
Structural forms, paragenesis and tectonophation of exozone
Authors: Kochnev A P , Kononov E E , Ivanova R N 
Published: January 2020

Abstract
Based on a field study of structural forms, formational, comparative geological, morphotectonic, and structural paragenetic analyzes and generalization of materials available in publications, a systematic analysis was made of the structural features of material complexes for the upper section of the unshared crust exozone. The results obtained made it possible to distinguish typomorphic structural paragenesis, which are exozonal. In the accepted genetic systematics, three groups of structural forms are distinguished: exogenous, endogenous, and cosmogenic, which are divided into nine subgroups. The forms of exogenous or non-tectonic origin, which to a large extent are formed as a result of the activity of underground and surface waters, or in connection with the economic activities of humans, are predominantly developed. Structural forms of endogenous and cosmogenic origin are observed in a subordinate amount within the exozone.
Methodological aspects of operational cartographic and space environmental monitoring of the impact zone of the Angara river reservoir cascade
Authors: Plastinin L A , Stupin V P , Olzoev B N 
Published: January 2020

Abstract
The necessity of organizing environmental monitoring of the zone of influence of the cascade of Angarsk reservoirs is substantiated. The goals, objectives and stages of its practical implementation on a systematic methodological basis using the operational data of remote sensing of the Earth and the capabilities of geographic information mapping.
The rational use of mica as a priority for the mining industry of Irkutsk region
Authors: Shishelova T I , Fedchishin V V , Khramovskikh M A 
Published: January 2020

Abstract
Mica is one of the most widespread minerals. Muscovite and phlogopite whose large reserves are located in Irkutsk region have various industrial applications. Due to the crisis, a large amount of mica remained unclaimed. There are mining dumps of raw materials and production waste. The use of mica and the disposal of industrial waste are urgent problems. One of the ways to solve them is to produce mica-based composite materials. The use of such materials will improve technical and economic indicators of production processes and contribute to the development of low-waste and non-waste technologies, protection of the environment. The article aims to establish fundamental laws of production of mica-based composite materials. The article provides recommendations on production technologies. Samples of muscovite, phlogopite mica, mine scraps and mica waste were studied. The methods of physicochemical analysis were used to study the samples. Thermodynamic and quantum chemical calculations were made. Based on the experimental studies and scientific generalizations, the theoretical foundations of the production technology for temperature-resistant mica-based materials and effective heating elements based on mica composite materials were developed. They are based on the integrated and rational use of mineral raw materials.
Contribution of forest and peat fires to atmospheric pollution in the Irkutsk region
Authors: Timofeeva S S , Timofeev S S , Garmyshev V V 
Published: January 2020

Abstract
Smoke and toxic combustion products emitted as a result of natural fires are among the most hazardous factors, as they lead to poisoning and death of people, as well as environmental pollution. Only one hectare of a burning forest accounts for 80 to 100 tons of smoke particles and 10-12 tons of a mixture of gases such as carbon monoxide, carbon dioxide, sulfur and nitrogen oxides, acetaldehyde, acetone, acrolein that are emitted into the atmosphere. The smoke of forest fires consists of tar drops, water vapor, gaseous substances and soot. Bulk emissions of ecotoxicants into the atmosphere generated during natural fires make an additional contribution to environmental pollution. The aim of the paper was to assess the contribution of forest and peat fires to atmospheric pollution in the Irkutsk Region. Based on statistical data as well as monitoring the consequences of forest and peat fires, studying procedural documents for investigating and describing fires, we calculated quantitative indicators of burnt natural materials in the territory of the Irkutsk Region for 2011-2018. When comparing pollution indices from stationary sources (the calculation was made according to the annual reports on the state of the environment in the Irkutsk Region) as well as forest and peat fires, it was found that the contribution of forest and peat fires reached 23.0-9.6%, the average value for 8 years was 16.8%. We found that for the period 2011-2018 as a result of forest and peat fires on average up to 259.12 thousand tons of pollutants were released into the atmosphere annually. Forest and peat fires make a significant contribution to atmospheric pollution in the Irkutsk Region. In addition to atmospheric pollution, other unfavorable environmental consequences are realized. In particular, during peat fires, burning is slow due to the lack of oxygen and fire does not propagate as fast as on the surface, it forms burnt voids and there is a chance of falling into burnt peat. Forest and peat fires lead to the destruction of forests in vast territories and may be one of the possible causes of the catastrophic flood in the Irkutsk Region in June 2019.
Assessing the environmental risk of mining enterprises by the integral indicator of dust emission
Authors: Timofeeva S S , Murzin M A 
Published: January 2020

Abstract
Mineral mining leads to the following negative consequences: disturbance of soil cover and hydrological regime, formation of man-made relief, changes in the quality of land, inhibition of soil formation processes and reduction of soil self-purification capacity and others, and most importantly, pollution of large areas through industrial emissions and, above all, dust emissions. Almost all processing operations, such as blasting, drilling, excavation, transportation of rock mass, storage, performed at mining enterprises are accompanied by dust formation. The aim of this paper was to develop a methodology for the assessment of environmental risks posed by mining enterprises by the integral indicator of dust emission. The objects of research were the largest mining enterprises of the Irkutsk Region engaged in extraction of gold, iron ore, coal and building materials. We analyzed the geoecological situation in the area of industrial activity of the enterprises under study. In our work, we calculated the atmospheric dust pollution indices, the areas of distribution of dust emissions, dust load on personnel of the enterprises, and proposed an integral indicator of dust emission which allows assessing the environmental risks of mining enterprises and their degree of environmental impact. It has been established that coal mining enterprises belong to high-risk facilities and it is necessary to introduce innovative dust suppression technologies at different
Influence of mineral sources on formation of soils in the foothills of Eastern Sayan Mountains (Buryatia)
Authors: Tugarina M A , Lopatovskaya O G 
Published: January 2020

Abstract
The results of studying of unique soils’ genesis and properties in the zone of underground mineral water influence as well as geological conditions are presented on mineral springs sites in the foothills of the Eastern Sayan Mountains. The spatial regularities of soil changes and their dependence on landscape conditions and the composition of mineral water are revealed. It has been established that soils near springs and at a distance of 5 and 20 m are more susceptible to mineral water than distal one at 50 and 200 m. Soil types and its properties change from calcisols that are hydromorphic, thin, gravelly and are formed on travertines, calcites and marbles, to brown soils formed on acidic and ferruginous rocks under the influence of forest vegetation. The salt composition of soils correlates with the mineral water composition and includes ready soluble salts - chlorides, sulfates and bicarbonates of calcium, magnesium and sodium in concentrations from 0.5 to 0.26%, pH changes from acidic to alkaline. The concentration of organic substances varies from 0.5 to 15.0%.
Assessment of the post-pyrogenic water toxicity in the north-eastern part of the Great Vasyugan Mire (Western Siberia)
Authors: Burnashova E N , Kharanzhevskaya Yu A 
Published: January 2020

Abstract
This paper devoted the analysis of the post-pyrogenic water toxicity in the north-eastern part of the Great Vasyugan Mire with a test culture of Daphnia magna Straus. It was found that the water samples of pine-shrub sphagnum bogs have a negative impact on the test organisms D. magna Str. The most toxic effect on test organisms provided by pH value. The chemical composition of waters is determined by the high content of NH+
4, Fetotal, organic matter at all points of the study. The MPC exceeded for NH+
4, Fetotal and COD. The studied post-pyrogenic areas are characterised by an increase in the concentration of heavy metals (Zn, Pb) and Fetotal in waters.
Ecobiotechnology in the process of industrial wastewater treatment of the closed mining enterprise as a guarantee of environment safety
Authors: Gula K E , Krupskaya L T , Rastanina N K 
Published: January 2020

Abstract
The report presents the results of long-term studies of the problem of ecological and chemical assessment of the impact of mineral processing waste in the form of pulp on the ecosphere, including aquatic ecosystems, and the development of bioengineering technologies (bioremediation) aimed at reducing their negative impact on the environment in the Primorsky territory. In the last century at the concentrating plant of the closed Khrustalnensky GOK mining enterprise a chemical method was used to treat industrial wastewater, a degree of which was no more than 75%. It is shown that pollutants discharged into water bodies after chemical treatment, which have a general toxic, carcinogenic and mutagenic effect, still pose a great threat to the ecological balance of natural systems. The studies show that there was intense pollution of ground and surface water, soil and vegetation, exceeding the regional background indicators up to 9 or more times within the boundaries of the anthropogenic system impact. Therefore, in the study area it is necessary to ensure environmental and social safety of industrial effluents by improving their treatment technology. In this regard, the aim of the research was not only to assess the extent of the negative impact of beneficiation mineral toxic wastes in the form of pulp to the ecosphere, but also in the development of ecologically safe biotechnological method of purification industrial wastewater by biodegradation, biooxidation and biosorption from solutions using the metabolic potential of biological systems (hydrophytic plants). Based on the purpose, the following tasks are defined: 1. To analyze and summarize the literature on the problem of industrial wastewater treatment using biological methods; 2. To study the composition and properties of industrial wastewater in the form of pulp and assess their impact on the environment; 3. To investigate ecological and biological features of little Duckweed as a possible concentrator of heavy metal compounds; 4. To develop a biotechnological solution for industrial wastewater treatment using bioremediation (higher aquatic vegetation, Duckweed). Experimental studies have proved the effectiveness of the biological systems metabolic potential (little Duckweed) to ensure the normative quality of treated wastewater by the example of a closed mining enterprise in the Primorsky territory (Khrustalnensky GOK). The scientific novelty of the proposed method is confirmed by a Patent of the Russian Federation (2014).
Bioeconomy of the Irkutsk Region: State and Prospects of Development
Authors: Panasenkova E Yu , Timofeev S S 
Published: January 2020

Abstract
Around the world there is a transition to a new economic model focused on environmental and social sustainable development. One of the ways for such a transformation is the transition to bioeconomy. The Irkutsk Region has unique forest resources. And it is the forest sector that is a key element for the development of bioeconomy in many countries. Beside major timber resources, the forests of the Irkutsk Region have a high potential for the use of non-timber resources. The aim of the paper was to assess the state of bioeconomy in the Irkutsk Region in terms of the use of renewable forest resources and the prospects for its development. The paper analyzes statistical information on the forest resources of the region in terms of renewability, primarily of non-timber resources, mushrooms, wild plants, etc. Based on the data of the Forestry Plan of the Irkutsk Region, we determined the volumes of non-timber food resources, and considered the contribution of hunting farms, ecotourism and fish husbandry to the economy of the region. It has been shown that the development of bioeconomy will make a significant contribution to the economy of the region, as well as provide an opportunity to create new jobs in rural and remote areas.
Effect of extrusion parameters on primary recycled ABS: mechanical, rheological, morphological and thermal properties
Authors: Kumar Vinay , Singh Rupinder , Ahuja I P S 
Published: January 2020

Abstract
This paper reports the effect of twin screw extrusion (TSE) process parameters on primary (1°) recycled acrylonitrile butadiene styrene (ABS) for possible 3D applications. The ABS (virgin/recycled) is one of the most widely used thermoplastic materials for fused deposition modeling (FDM) based 3D printing of functional prototypes. But hitherto little has been reported on improving the mechanical/rheological/morphological and thermal properties of (1°) recycled ABS while extrusion without any reinforcement (i.e. without secondary (2°) recycling). In this work the granules of 1° recycled ABS have been extruded after ascertaining suitable process parameters of TSE (namely: screw temperature, torque and dead weight). The results of study suggests that screw temperature 210 °C, 0.3Nm torque and dead weight of 13 kg are the best settings for TSE in the present case study. The TSE based extruded 1° recycled ABS has improved crash resistance properties (as modulus of toughness was significantly improved to 3.261 MPa (from 0.191 MPa (for non TSE processed) and 0.081 for virgin ABS).