bluuebunny/crossref_metadata_2025 huggingface dataset:
Electronic band dispersion determination in azimuthally disordered transition-metal dichalcogenide monolayers
Authors: Park S. , Schultz T. , Han A. , Aljarb A. , Xu X. , Beyer P. , Opitz A. , Ovsyannikov R. , Li L.-J. , Meissner M. , Yamaguchi T. , Kera S. , Amsalem P. , Koch N.
Published: June 2019

Generally, the lack of long-range order in materials prevents from experimentally addressing their electronic band dispersion by angle-resolved photoelectron spectroscopy (ARPES), limiting such assessment to single crystalline samples. Here we demonstrate that the ARPES spectra of azimuthally disordered transition metal dichalcogenide (TMDC) monolayers with 2 H phase are dominated by their band dispersion along the two high symmetry directions Γ-K and Γ-M. We exemplify this by analyzing the ARPES spectra of four prototypical TMDCs within a mathematical framework, which allows to consistently explain the reported observations. A robust base for investigating TMDC monolayers significantly beyond single crystal samples is thus established.
A novel ammonium pentaborate – poly(ethylene-glycol) templated polymer-inclusion compound
Authors: Ploszajski Anna R. , Billing Matthew , Skipper Neal T. , Cockcroft Jeremy K.
Published: June 2019

Reaction of ammonia borane with poly-ethylene glycol at slightly elevated temperatures leads to the formation of the first known example of a borate-based polymer inclusion compound with a pentaborate framework structure.
Polyhedral borane-capped coinage metal nanoparticles as high-performing catalysts for 4-nitrophenol reduction
Authors: Larm Nathaniel E. , Madugula Dronareddy , Lee Mark W. , Baker Gary A.
Published: June 2019

Small (<5 nm) gold and silver nanoparticles and their bimetallic counterparts were prepared using the fundamental boron cluster [closo-B10H10]2− as the reducing and stabilizing agent.
H/F substituted perovskite compounds with above-room-temperature ferroelasticity: [(CH3)4P][Cd(SCN)3] and [(CH3)3PCH2F][Cd(SCN)3]
Authors: Cao Ying-Jie , Zhou Lin , Shi Ping-Ping , Ye Qiong , Fu Da-Wei
Published: June 2019

[(CH3)4P][Cd(SCN)3] and its fluorine-substituted product [(CH3)3PCH2F][Cd(SCN)3] perfectly demonstrate the new concept of fluorine substitution, maintaining ferroelasticity while increasing dielectric properties.
Negatively charged metal–organic hosts with cobalt dithiolene species: improving PET processes for light-driven proton reduction through host–guest electrostatic interactions
Authors: Cai Junkai , Zhao Liang , Wei Jianwei , He Cheng , Long Saran , Duan Chunying
Published: June 2019

Negatively charged metal–organic hosts combined with cationic Ru-based photosensitizers by electrostatic interactions to improve PET processes for efficient photocatalytic proton reduction.
Visualization and quantification of cellular RNA production and degradation using a combined fluorescence and mass spectrometry characterization assay
Authors: Gao Xiaoying , Shu Xiao , Song Yinuo , Cao Jie , Gao Minsong , Wang Fengqin , Wang Yizhen , Sun Jing Zhi , Liu Jianzhao , Tang Ben Zhong
Published: June 2019

A combined fluorescence and mass spectrometry assay is developed to visualize and quantify cellular RNA production and degradation.
Linkage induced enhancement of fluorescence in metal–carbene bond directed metallacycles and metallacages
Authors: Purba Prioti Choudhury , Bhattacharyya Soumalya , Maity Manoranjan , Mukhopadhyay Sujay , Howlader Prodip , Mukherjee Partha Sarathi
Published: June 2019

Four new metal–carbene based metallacycles and metallocages have been obtained using non-AIE active 1,4-dihydropyrrolo[3,2-b]pyrrole based imidazolium ligands. These final assemblies show linkage induced enhanced emission via rigidification.
Reversible interaction of 1-butyl-1-methylpyrrolidinium cations with 5,7,12,14-pentacenetetrone from a pure ionic liquid electrolyte for dual-ion batteries
Authors: Fang Yaobing , Chen Caiying , Fan Jiaxin , Zhang Mengdie , Yuan Wenhui , Li Li
Published: June 2019

The graphite//5,7,12,14-pentacenetetrone organic dual-ion batteries display two well-defined discharge plateaus at 2.4 and 1.8 V, and a high capacity retention of 92.2% after 100 cycles.
Enhancing overall properties of epoxy-based composites using polydopamine-coated edge-carboxylated graphene prepared via one-step high-pressure ball milling
Authors: Ren Shujie , Meng Liu , Ma Wenli , Lin Song , Yang Wengang , Lan Jinle , Jia Xiaolong , Cai Qing , Yang Xiaoping
Published: June 2019

Overall properties of epoxy-based composites were enhanced by using polydopamine-coated edge-carboxylated graphene prepared via one-step high-pressure ball milling.
Enhancing absorption dominated microwave shielding in Co@C–PVDF nanocomposites through improved magnetization and graphitization of the Co@C-nanoparticles
Authors: Choudhary Harish Kumar , Kumar Rajeev , Pawar Shital Patangrao , Sundararaj Uttandaraman , Sahoo Balaram
Published: June 2019

An improved graphitic layer and magnetization of graphitic carbon coated Co-nanoparticles enhance absorption dominated microwave shielding in Co@C–PVDF nanocomposites.
Collective action of water molecules in zeolite dealumination
Authors: Nielsen Malte , Hafreager Anders , Brogaard Rasmus Yding , De Wispelaere Kristof , Falsig Hanne , Beato Pablo , Van Speybroeck Veronique , Svelle Stian
Published: June 2019

Water molecules cooperate to facilitate Al–O bond hydrolysis during zeolite dealumination at real steaming conditions.
How quantum is radical pair magnetoreception?
Authors: Fay Thomas P. , Lindoy Lachlan P. , Manolopoulos David E. , Hore P. J.
Published: June 2019

Semiclassical methods cannot accurately simulate magnetic field effects relevant to avian magnetoreception, which may therefore deserve the label “quantum biology”.
TixCe1−xO2 nanocomposites: a monolithic catalyst for the direct conversion of carbon dioxide and methanol to dimethyl carbonate
Authors: Chen Yongdong , Wang Hong , Qin Zhaoxian , Tian Shanli , Ye Zhongbin , Ye Lin , Abroshan Hadi , Li Gao
Published: June 2019

Dimethyl carbonate (DMC) is widely employed as a versatile reagent and solvent for green organic synthesis and fuel additives.
Polycaprolactone-enabled sealing and carbon composite electrode integration into electrochemical microfluidics
Authors: Klunder Kevin J. , Clark Kaylee M. , McCord Cynthia , Berg Kathleen E. , Minteer Shelley D. , Henry Charles S.
Published: June 2019

Demonstration of a simple melt based process to overcome the issue of poorly integrated, low activity and complicated methods of carbon electrode integration into microfluidics.
FgaPT2, a biocatalytic tool for alkyl-diversification of indole natural products
Authors: Bandari Chandrasekhar , Scull Erin M. , Bavineni Tejaswi , Nimmo Susan L. , Gardner Eric D. , Bensen Ryan C. , Burgett Anthony W. , Singh Shanteri
Published: June 2019

Demonstration of FgaPT2 catalyzed alkyl-diversification of indole containing natural products.
Induction of transferrin aggregation by indazolium [tetrachlorobis(1H-indazole)ruthenate(iii)] (KP1019) and its biological function
Authors: Śpiewak Klaudyna , Świątek Sylwia , Jachimska Barbara , Brindell Małgorzata
Published: June 2019

Pre-incubation ofKP1019with transferrin leads to the formation of adducts/aggregates, which inhibit the cytotoxic properties ofKP1019.
Preparation of modified montmorillonite with different quaternary ammonium salts and application in Pickering emulsion
Authors: Yang Zeyu , Wang Wanxu , Tai Xiumei , Wang Guoyong
Published: June 2019

The emulsion stabilized with long-chain quaternary ammonium salt-modified montmorillonite has better stability.
Efficient and reversible absorption of NH3 by functional azole–glycerol deep eutectic solvents
Authors: Deng Dongshun , Duan Xiuzhi , Gao Bao , Zhang Chao , Deng Xiaoxia , Gong Lei
Published: June 2019

The hydrogen bond donor (HBD) of glycerol and hydrogen bond acceptor (HBA) selected from azole compounds were paired to construct functional deep eutectic solvents (DESs) as NH3 absorbents.
Restriction of the rotational relaxation of a butadiyne-bridged porphyrin dimer in ultrathin films
Authors: Shokurov Alexander V. , Meshkov Ivan N. , Bulach Véronique , Gorbunova Yulia G. , Hosseini Mir Wais , Tsivadze Aslan Yu. , Arslanov Vladimir V. , Selektor Sofia L.
Published: June 2019

A way to stabilize the less energetically viable orthogonal conformation of a porphyrin dimer by means of a forced orientation at an interface is shown.
Further studies on the photoreactivities of ruthenium–nitrosyl complexes with terpyridyl ligands
Authors: Sasaki Isabelle , Amabilino Silvia , Mallet-Ladeira Sonia , Tassé Marine , Sournia-Saquet Alix , Lacroix Pascal G. , Malfant Isabelle
Published: June 2019

Exposure of the ruthenium terpyridyl complex to NO gas leads to the ruthenium–NO complex with nitrosation of the ligand.
In vivo clearable inorganic nanophotonic materials: designs, materials and applications
Authors: Nie Jianmin , Li Yang , Han Gang , Qiu Jianrong
Published: June 2019

Inorganic nanophotonic materials (INPMs) are considered to be promising diagnosis and therapeutic agents for in vivo applications, such as bio-imaging, photoacoustic imaging and photothermal therapy.
A flexible bimodal sensor based on an electrospun nanofibrous structure for simultaneous pressure–temperature detection
Authors: Wang Zhihui , Zhang Ling , Liu Jin , Li Chunzhong
Published: June 2019

The multifunctional sensor prepared through a scalable and efficient strategy combines bilevel conductive networks with a nanofibrous structure, which endows it with high sensitivity for simultaneous and independent detection of pressure and temperature signals.
Correction: CuCo2S4 nanocrystals as a nanoplatform for photothermal therapy of arterial inflammation
Authors: Zhang Xing , Liu Junchao , Yang Xinrui , He Guanjie , Li Bo , Qin Jinbao , Shearing Paul R. , Brett Dan J. L. , Hu Junqing , Lu Xinwu
Published: June 2019

Correction for ‘CuCo2S4 nanocrystals as a nanoplatform for photothermal therapy of arterial inflammation’ by Xing Zhang et al., Nanoscale, 2019, 11, 9733–9742.
Novel fluorene-based fluorescent probe with excellent stability for selective detection of SCN−and its applications in paper-based sensing and bioimaging
Authors: Yang Tingxin , Zuo Yujing , Zhang Yu , Gou Zhiming , Wang Xiaoni , Lin Weiying
Published: June 2019

Design and synthesis of a novel fluorene-based polymer probe for selectively detecting SCN−.
Monitoring heart activity using ultra‐wideband radar
Authors: Cho H.‐S. , Choi B. , Park Y.‐J.
Published: June 2019

This Letter focuses on extracting the heartbeat information using ultra‐wideband impulse radar, and a new method that can extract not only the heart rate but also the timing of the heartbeat with high accuracy is proposed herein. As the first step towards achieving this goal, radar pulses are projected towards a human body, and the reflected pulses are accumulated along the time axis at specific time intervals. The accumulated pulses pass through a digital filter to reveal the heartbeat information and are converted to a greyscale image. A pattern that reflects the heartbeats is used as a template to find similar patterns in the entire image. After all the significant patterns are found, the timing information corresponding to the locations where the patterns appear is calculated, and this indicates the time when the heartbeats actually occur. From the experimental results, the authors confirmed that the proposed method could estimate the heart rate with high accuracy and extract the timing information of the heartbeats.
Risk awareness enabled sizing approach for hybrid energy storage system in distribution network
Authors: Tang Zao , Liu Junyong , Liu Youbo , Huang Yuan , Jawad Shafqat
Published: June 2019

This study presents a bi‐level optimal sizing approach for hybrid energy storage system (HESS) in distribution network with high share of renewable energy. Differently from the traditional planning methods, the proposed two‐level approach can evaluate the investment risks caused by wind power uncertainty. In particular, the upper level describes the financial composition associated with HESS devices investment cost. The lower level searches optimal operation strategies for the minimal cost of each scenario set. The upper‐level and lower level models are bridged by CVaR, which measures the conditional tail expectation of lower level costs for the entire scenarios and are involved as the additional item of the upper objective. Moreover, to improve solution efficiency, some of the mathematics transformations including second‐order cone programming are adapted to transform the holistic non‐linear model into the more effective pattern that can be computed by the commercially available solver. The proposed method can compute the corresponding energy storage capacity based on the assessment of the risk tolerance of investors. Finally, a test system is used to validate the effectiveness of the proposed approaches.
Mesurer l’épaisseur des résidus à la surface d’un sol pour estimer leur biomasse
Authors: Thiébeau Pascal
Published: June 2019

Aujourd’hui, les résidus de culture ne sont plus considérés comme des déchets : leur contribution aux équilibres agronomiques et environnementaux des systèmes de culture est reconnue. Dans ce contexte, connaître leur quantité à la surface d’un sol, après une récolte, devient un enjeu important de la gestion des matières organiques dans la rotation des cultures. Généralement, l’estimation quantitative se réalise par prélèvement d’échantillons, afin d’en déterminer la masse sèche (MS) au laboratoire. L’objectif de ce travail est de proposer une méthode rapide de quantification des résidus au sol, dont l’hypothèse est basée sur une méthode d’estimation de biomasse prairiale sur pied. Ce travail a été réalisé sur des exploitations pratiquant l’agriculture de conservation en région de grandes cultures. Les résidus ont été broyés lors de la récolte ou lors d’une opération spécifique suivante. Les données de biomasse ont été collectées à l’aide de cadres de 0,5 × 0,5 m, tandis que les mesures d’épaisseur ont été effectuées à l’aide d’un aspérimètre. Ce travail compare deux méthodes de mesure d’épaisseur : soit par répétitions aléatoires de positionnement de l’aspérimètre le long d’un transect perpendiculaire au sens de progression de la moissonneuse, soit par répétitions côte à côte. Un test du nombre de mesures d’épaisseur a été réalisé pour connaître l’espacement maximal à conserver pour réaliser une estimation précise. Les résultats montrent qu’il est préférable de réaliser les mesures d’épaisseur des résidus sur l’intégralité d’un transect de moissonneuse pour estimer avec précision cette information, et qu’il faut maintenir 100 mesures d’épaisseur pour conserver une estimation proche de la mesure d’épaisseur de référence, l’espacement entre deux mesures ne devant pas excéder 6 cm. Par ailleurs, ce travail montre qu’il est possible d’obtenir une approximation de la biomasse présente au champ avec une bonne qualité d’estimation, en retenant qu’un millimètre d’épaisseur de résidu représente 50 g MS.m−2.
Increase of energy efficiency and competitiveness of mechanical systems on the basis of anisotropy of nonlinear frictional bonds
Authors: Shapovalov Vladimir , Shcherbak Petr , Kornienko Roman , Mishchinenko Vasilij , Feizova Valentina
Published: June 2019

Interaction dynamics of contacting micro- and macroroughnesses of friction surfaces defines the main tribocharacteristics: friction factor, a wear-out type, its intensity, coefficient of energy efficiency of all the system. Reliability and energy efficiency of mechanical systems substantially depend on reliability and energy efficiency of their friction units. In their turn, reliability and energy efficiency of friction units are defined by interaction of the dynamic processes happening in frictional and mechanical subsystems.
Formation of energy efficient start-brake modes of the frequency-controlled electric drive in production mechanism
Authors: Filimonov Maxim , Karnaukhov Nicolay , Lukyanov Eugeny , Smyatsky Dmitry , Mironenko Roman
Published: June 2019

this article the energy efficient frequency way of starting of production mechanisms electrical drive with low power asynchronous motors (from 90 Wt to 5 kWt) is proposed. To provide this With the goal of electrical losses decreasing during asynchronous motor starting the Pontryagin Maximum Principle have been applied by the authors when analysing of two-mass model of production mechanism frequency controlled electrical drive. In result of calculations for frequency controlled electrical drive of production mechanism with 90 Wt power asynchronous motor of the model 4AA50A2 Dependencies of amplitude and frequency of supply voltage by the time are obtained. These dependencies confirm possibility of decreasing the electrical power losses with different values of motor shaft load torques. In compare with the other ways of asynchronous motor starting (for example U/f=const) they allow to decrease the electrical losses more then two times in nominal mode.
Improving the quality of spatial separation of signals in radio communication systems
Authors: Okorochkov Aleksandr I. , Malyutin Bogdan B. , Amine Laouar Mohamed , Dmitrienko Nadezhda A.
Published: June 2019

The article presents the research results of dependence of the signal-to-interference ratio in the focus area of the reflecting antenna array on its length, as well as the influence of the center displacement of the antenna array of different sizes on the signal-to-interference ratio. The research results show that short-focus reflecting antenna arrays have better characteristics than long-focus ones. By displacing the center of the antenna array, the signal-to-interference ratio can be increased by almost 20 dB.
Electro-optical dust sensors calibration by aerosol image analysis
Authors: Semenov Vladimir , Makov Sergey , Hanzhonkov Yurij , Astsaturov Yurij
Published: June 2019

The paper describes the process of data obtaining for designing electro-optical sensors using a television aerosol particles image analyzer. Using simulation based on Mie theory, the process of calibration of simple electro-optical aerosol (dust) sensor is carried out. In the paper the main dependences for sensor calibration are shown. The proper calibration allows power saving by selection certain laser beam power level.
Geomechanical Estimation of the Influence of Horizontal Coalbed Methane Well Design on Coal Seam Permeability
Authors: Shevtsov Aleksandr , Khyamyalyaynen Veniamin
Published: June 2019

The paper presents a method of choosing the design of horizontal coalbed methane well by estimation of a coal seam permeability on the results of one-dimensional and two-dimensional geomechanical modeling. The differences in the preparation of one-dimensional geomechanical models of coalbed methane fields from models for conventional oil and gas fields are noted. The results of preparation of one-dimensional geomechanical model based on data from one of the vertical exploration coalded methane wells and two-dimensional geomechanical modeling of coal seam for three common designs are presented. The obtained results allow us to conclude that geomechanical modeling is a suitable tool for estimation of coal seam permeability changes and choosing the most effective well design for the considered mining and geological conditions. In particular, in the coal seam under study, a multilateral well can cause the greatest increasing of permeability.
Evaluation of Geological Risks of Commercial Development of Complex Structured Coal Deposits
Authors: Rogova Tamara , Shaklein Sergey
Published: June 2019

The main risk in the commercial development of complex located coal deposits is a geological risk, which is assessed by the results of coal resources classification at sufficient confidence. In conditions of complex located coal deposits, the main factor which determines categories of coal Reserves is the confidence of geological structural data, a reliable estimation of which is provided only with the use of quantitative methods. The use of conventional geostatistical and geometrical approaches to the reserves categorization in this kind of deposits is impossible. The confidence of complex located coal deposits is proposed to be quantitatively evaluated by the similarity degree of seams position on the adjacent exploration lines. This similarity is estimated with a special similarity coefficient varying from 0 to 1, determined based on curves correlation, which is adapted to the problem-solving method, in the complex plane. The obtained results provide the quality increase of the geological materials confidence evaluation and can be used to solve issues of the geological risk evaluation of the development of complex located coal deposits, during commercial or state expertise of geological information.
Justification of Screw Press Rational Parameters and its Working Modes during Sod Peat Extraction by Milling-forming Method
Authors: Yablonev Alexander , Guseva Anna
Published: June 2019

Sod peat production involves the use of screw press machines. Although the designs of such machines differ in details, they have a number of similar parameters including the highest power intensity throughout the entire production cycle. Sod peat forming conditions are investigated in order to reduce the process energy intensity without losing sod density and, therefore, strength. Laboratory experimental dispersion and moulding of peat are done with a screw press having five speeds, three interchangeable nozzles and two screws with different step of turns. The moisture of the feedstock, the effective power and capacity of the press, the specific energy of the process are determined. The findings show that the most rational operating modes of a screw press consist in the blend of screw rotation speed, nozzle diameter and step of screw turns.
Improving the Mining Enterprise Productivity Based on Probabilistic Nature of the Solid Minerals Extraction and Transportation
Authors: Tyurin Alexey , Stoianov Adrian
Published: June 2019

Reducing costs in the extraction and transportation of solid minerals is an urgent task. To solve it, the article proposes the use of a systematic approach to consider the features of planning the operation of motor vehicles in conditions of coal mine functioning uncertainty. The account of the uneven operation of mining, transport units and complexes for processing and loading coal into railroad cars allows you to identify the shortcomings in the work of the entire enterprise and reduce resources use at the planned production level. On the example of the Kemerovo region LLC «Razrez Pervomaisky» in the article the model of the excavator-automobile complex work planning is considered taking into account the dynamics of production and transport areas resources use. The use of random data makes it possible to flexibly redistribute vehicles along the routes of transportation and minimize the costs associated with the operation of dump trucks and excavators. The proposed methodology for planning the work of the excavator-automobile complex will allow to level the work and optimize the resources of all sections of the coal mine. The application of the proposed methods will free up unnecessary resources of the coal mine and redirect them to the needy facilities.
Effect of the Hydrate Saturation of the Pores of Coal Bed on the Gradient of Gas Pressure and the Rise of Outburst Danger
Authors: Smirnov Vyacheslav , Dyrdin Valery , Kim Tatyana , Manakov Andrey
Published: June 2019

A substantial fraction of methane in undisturbed coal beds is present in the condensed latent state, so that methane evolution from coal may be not always quantitatively predicted reliably. On the basis of experimental data, an equation expressing the amount of gas hydrate through the sorption capacity and actual humidity of coal is obtained. Analysis showed that the gradient of gas pressure in the marginal zone of a coal bed is linearly dependent on the saturation of the pore space with the hydrate. The high gradient of gas pressure and high gas content of coal beds along with local disruption of coal and re-distribution of rock pressure are the major factors causing instantaneous outbursts of coal and gas.
Parameters of Viscous Heat-Conducting Gas-Air Flow in Mining Behind the Shock Front
Authors: Cherdantsev Sergei , Filatov Yuri , Shlapakov Pavel , Lebedev Kirill
Published: June 2019

With the transition of mining operations to deeper horizons, the safety of miners in coal mines is significantly reduced. This is mainly due to the manifestation of gas-dynamic and the thermische factors, the first of which include sudden emissions of coal and gas, gas venting, shock and detonation waves in the atmosphere of mine workings. The reasons for the thermal factors are the presence of dust-gas-air mixtures prone to chemical oxidation reactions of carbonaceous substances, and the formation of self-heating foci, which lead to changes in the temperature field in the atmosphere of mountain rocks and their surroundings, which significantly increases the probability of occurrence of deflagration and detonation processes. In this paper, the parameters of the shock front in a viscous heat-conducting gas-air flow formed by a sudden release of gas from an underground tank into a mine with a supersonic speed are determined. It is assumed that the movement of the gas-air mixture during the transition of the shock front is stationary, which made it possible to use the fundamental laws of conservation of mass, pulses and energy. The formulas determining the parameters of the gas-air flow are obtained, their graphs are constructed and some regularities of the flow parameters change behind the shock front depending on the initial Mach number and the Poisson adiabatic index are revealed.
Research of Loadings Character in Electrical Networks of Open-Casts Mining
Authors: Zaharova Alla , Lobur Irina , Shauleva Nadezda
Published: June 2019

Calculation of loadings and losses in electrical networks of open-casts is bound to the difficulties caused by irregularity of individual production schedules of rope shovels – the main and most power-intensive consumers. The computational method according to load charts is presented. It allows to consider irregularity of loading manifestation during an shovelling cycle that significantly increases accuracy of calculations of losses in net-works in comparison with calculation for mean squared current.
Physico-Chemical Properties of Soils in Lviv Volyn Coal Basin Area
Authors: Popovych Vasyl , Stepova Kateryna , Voloshchyshyn Andriy , Bosak Pavlo
Published: June 2019

The results of the research showed that hydromorphous soils prevail on the territories adjoined to waste heaps. Swampy meadow and sod soils were defined. During investigation of swampy meadow soils it was determined that the soil is humused at a considerable depth. The soils are saturated with the bases. According to granulometric texture it is sandy loam soils, but with depth go to the middle loamy soils. The analysis for labile forms of heavy metals showed that in these soils the content of investigated heavy metals does not exceed the maximum allowable concentrations, except for lead. The amount of humus in sod soils sharply decreases with depth, the reaction is close to neutral. This soil is of slightly heavier granulometric texture. The content of labile forms of heavy metals doesn’t exceed MACs, except for lead.
Impact of Environmental Investments and Air Protection Costs on the Sustainable Development of Coal Mining Regions
Authors: Morozova Elena , Akulov Anatoly , Logunov Timur
Published: June 2019

The transition to sustainable development of mining regions depends on the size and effectiveness of environmental investments. This study examines the impact of investments and current costs of air protection on the amount of air emissions from stationary sources. We used data on investments in atmospheric air protection, current costs of air protection, and amounts of air emission in 12 mining regions of Russia. The impact of investment and emission costs was simulated using standard pairwise regression equations and the Almon distributed lag model. The statistical insignificance of the models has been established, both in terms of the form of coupling equation and the significance of most coefficients with explanatory variables. The distributed lag model using data on investments in air protection over five years is also statistically insignificant. The paper also discusses the impact of investments and current costs on the specific emission amount per 1 ruble of the gross regional product. The model of pairwise linear regression and other possible forms of the coupling equation in this case are statistically insignificant. The study found that investments and current costs do not affect emissions from stationary sources. This suggests a lack of investments in the air protection and a low efficiency of their use.
On the Measures to Solve Environmental Problems of the Territory with Intensive Open Pit Coal Mining
Authors: Gvozdkova Tatiana , Stefanek Pawel , Koščová Michaela
Published: June 2019

Ecological problems in the open pit mining of coal deposits are extremely hard, since mining operations are accompanied by disturbed land to a large depth with significant changes in the landscape, hydrometeorological conditions, mixing of rocks and removal of infertile or even harmful rocks with radioactive isotopes to the surface. Disturbed lands are unusable if they are not repaired. All man-made disturbances of the environment caused by open pit mining are divided into landscape (changes in terrain, vegetation and soil cover) and environmental (violation of living conditions within the allotment and adjacent lands: changes in water regime, pollution of the soil, air and water basins) onesOne of the most important areas in the field of environmental protection is the reclamation (restoration) of the earth’s surface. In accordance with the requirements of the protection of the subsoil, enterprises engaged in the development of mineral deposits are obliged at their own expense to bring disturbed lands into a state suitable form for their further use. Reclamation of ought to be carried out during open pit mining operations and must be completed after mining of mineral resources in the terms established by the authorities that provide land for use.
Determination of the Criminal Offense Elements in the Safety Rules Violation during Mining Operations
Authors: Safargalieva Olga , Sergeev Oleg , Volgin Yuriy , Agienko Marina
Published: June 2019

In the article, from the standpoint of a systematic approach, the forensic characterization of safety rules criminal violations during mining operations is analyzed. That is the basic element which determines the content and algorithm of uncovering of crimes, the investigation and trial of a criminal case. The subject (the identity of offender) is its central, basic element. It is noted that the element of subject (the identity of offender) is the most informative when investigating criminal violations of safety rules during mining operations. It is based on his study in the unity and interrelation of the following aspects: official position, social and psychological properties and personality traits and victimization behavior of the criminal offence victims and third parties. The situation of a crime (the second element of forensic characterization) is structured according to the circumstances that characterize pre-, criminal, and post-criminal state of outward things; three interrelated and interdependent are pointed out. The complex combination of the levels and edges of each selected elements of a cognizable object, due to the specifics of the crime in question, also determines the peculiarities of investigative actions and search activities at the initial stage of the investigation of safety rules criminal violations during mining operations. The article proposes recommendations to overcome the objective difficulties encountered in the investigation of criminal violations of safety rules during mining operations.
Substantiation of the Method of Operational Monitoring of Soil Contamination and Oil Decontamination Processes
Authors: Prostov Sergey , Shabanov Evgeniy
Published: June 2019

Contamination of soils with petroleum products is an acute environmental threat. Strengthening of technogenic impact on the natural environment predetermines the need for research aimed at identifying the conditions for the safe functioning of both natural and created in the course of human industrial activity ecosystems. The method of operational determination of the degree of soil contamination with petroleum products and the use of this method for monitoring in soil purification have been studied. The method of estimation of initial and residual soil pollution is proved. The quantitative assessment of the content of oil products by the measured specific electrical resistance of the contaminated soil is investigated. The theoretical background and algorithms of software systems for assessing the content of petroleum products by using electrophysical measurements at the point, by the profile and in the volume of the soil are presented. The results of the experimental substantiation for determination of oil content in the soil sample and the comparison of the data with the results of the calculation in the software package are presented in the study. The regression dependences between the physical parameters of the soil are obtained.
Criminal Law Violations in Labour Safety at Coal Mining Enterprises
Authors: Volgin Yury , Gaag Irina , Naumov Alexander
Published: June 2019

The paper deals with the qualification of criminal violations of safety rules in coal mining enterprises in the light of recent changes in Art. 216 and 217 of the Criminal Code of the Russian Federation, as well as the adoption of a new Resolution of the Plenum of Supreme Court of the Russian Federation on violations of safety rules during operations. Firstly, the old and new editions of Art. 216 and 217 of the Criminal Code are compared. After that, the distinctive features of the articles under consideration are examined with the help of the new Plenum Resolution, federal laws and bylaws. Finally, the case law on this issue has been reviewed since 2016 with consideration of specific examples. In the paper, the authors do not address the issues of qualifying violations of safety rules at coal mining enterprises under Art.143 of the Criminal Code as it has not been changed. At the end of the study, the authors formulate the qualification rules taking into account the latest changes, without proposing any changes to the Criminal Code of the Russian Federation and other regulatory legal acts that do not include the Resolution of the Plenum of the Supreme Court, i.e. the results of the study can be used in practice. The problem is that there is a lack of research of the changes we are considering in the Criminal Code of the Russian Federation, and even more in relation to the coal mining industry.
Using of Shell Filtering Constructions for Concentrating Plant’s Coal Slurry Dewatering
Authors: Murko Elena , Kalashnikov Valentin , Gorbachev Anton , Mukhomedzyanov Igor
Published: June 2019

The urgency of using mining waste is also emphasized by the environmental component: reducing the anthropogenic load on the region through the integrated development of mineral resources with an increase in the waste-free component of technological processes will undoubtedly improve the difficult environmental situation in Kuzbass. This will be reflected in the reduction of pollution of surface and groundwater, the atmosphere, the soil, the reduction of the land capacity of mining enterprises by reducing the area occupied by the treatment facilities. The study of the state of the issue of coal sludge dewatering showed that at present there is no unified technology of dewatering using geotextile materials (Geotube® etc.). With the general similarity of existing technologies, there were no uniform requirements for the preparation of raw materials, the site for work, the type, properties and parameters of the geotextile used, etc., which makes it difficult to apply this or that technology in industrial conditions and large-scale coal sludge. Thus, the purpose of this study is to select the most optimal geotextile material (in terms of price / quality ratio) and to develop a technological scheme for the dewatering of water-coal pulp formed in the radial thickener of the concentrating plant.
Assessment of the Protection and Efficiency of Work of Information Systems Used in the Mining Industry
Authors: Mukasheva Gulzira , Stenina Natalya , Sagindykov Kakim
Published: June 2019

The issues of digitalization of the mining industry, including open-pit mining, are considered. The issues of the use of semantic systems as an element of information flows, allowing to determine and select the right decisions in the process of mining management, in particular, in the mining of minerals by open mining, are covered. The article formulates requirements for semantic networks for the description of material in computer-aided learning tools and analyzes the most well-known models of semantic networks.
The Design of Control System for Gearless Synchronous Drum-Motor of the Underground Mine Belt Conveyor
Authors: Semykina Irina , Tarnetskaya Alexandra
Published: June 2019

Regarding the current tendency of replacing the geared electric drives with gearless drum motor and substitution of the obsolete induction motors with energy-efficient synchronous motors, the authors consider the difficulties of the high-power permanent magnet synchronous motor and present its model with parameters corresponding to the real belt conveyor electric drive parameters. This paper describes the questions of the vector control system simulation for the synchronous gearless drum-motor of an underground belt conveyor. The control of permanent magnet synchronous motor is realized having regard to rotor angle and random traffic flow. The mechanical system of an underground belt conveyor is represented by the multimass system with the viscoelastic bar. As a conclusion, the article presents the results of the direct torque control system simulation in the speed adjustment mode.
Distribution of Static Normal Reactions to Wheels of Open-Pit Dump Trucks Depending on the Longitudinal and Cross Sections of the Open-Pit Road
Authors: Dadonov Michail , Kulpin Alexander , Ostanin Oleg , Suleimenov Erkin
Published: June 2019

Vehicle costs for rock mass transportation are more than 50% of total costs, among which 25 — 30% are tire costs. The average tire life in mining enterprises is lower than that the value recommended by production plants. The tire life of open-pit dump trucks is more dependent on the normal load on the wheel. The main factor in the change of the normal load is location of the wheel on the dump truck and the open-pit road’s section. Determination of the maximum loaded tire in different operating conditions will allow increasing the tire life and preventing its premature failure. The TKPH index (tire performance) recommended by tire manufacturers does not take into account the diversity of mining conditions and variations of sections of open-pit roads on different routes. The average load per trip is defined as movement of a loaded open-pit truck and an empty open-pit truck on a straight reach of a road. The proposed method for recording of redistribution of the load on the wheel allows making adjustments to recording of TKPH indexes and thereby effectively managing the tire life, which in turn will make it possible to more fully use the tire life, increase its reliability and reduce the cost of rock mass transportation.
Automated Toolkit for Encouraging a Producer to Use Innovative Technologies in Environmentally Oriented Economic Development of Mining Regions
Authors: Medvedev Alexey , Kislyakov Ivan , Prokopenko Yevgheniya , Semenkina Maria , Brester Kristina
Published: June 2019

The automated toolkit for assessing environmental and investment attractiveness of a mining region and the results of its application are discussed in the article. This toolkit includes the optimization mathematical model, the algorithms for the interaction between a regional control center and a producer within the territory, as well as the automated software package for their analysis. The use of the optimization mathematical model makes it possible to take into account the maximum economic potential of a producer, which determines, respectively, a mining region’s environment pollution potential. Accounting for environmental risks will allow the control center or other decision makers to identify not only the optimal pattern of eco-economic interaction in the region, but also reflect changes in the environmental and investment climate as a combination of economic potential and involved risks. The model and the algorithms of interaction between a regional control center and a producer, as well as the results of their numerical analysis given in this paper, allow considering this toolkit as an effective decision support tool aimed at improving environmental and investment attractiveness of a mining region by encouraging a producer to use the best available technologies and conserve the natural environment.
Determination of the Energy Capacity of Face Rock Breaking by the Geokhod’s Knife Operating Element and its Dependence on the External Propeller’s Pitch
Authors: Nesterov Valery , Aksenov Vladimir , Sadovets Vladimir , Pashkov Dmitry , Beysebayeva Zhadyra
Published: June 2019

The article contains a method for determination of the energy capacity of face rock breaking by the knife operating element of the geokhod. In addition, the dependence of the breaking energy capacity on the pitch of the geokhod’s external propeller was revealed. The relevance of the study was considered. In order to set goals and objectives of the study, work features of new-class mining machines – geokhods and fundamental principles of geokhod technology were presented. Advantages and disadvantages of existing methods for determination of the energy capacity of rock breaking were identified, and the possibility of using them in calculation of power parameters of the geokhod’s knife operating element was assessed. Power and geometrical parameters of the geokhod’s knife operating element were determined, which affect the energy capacity of rock breaking. To determine the influence of the external propeller’s pitch on the breaking energy capacity, geometrical parameters of the knife operating element and parameters of mining conditions of workings were substantiated. As a result of the study, it was revealed that the energy capacity of rock breaking by the knife operating element decreases non-uniformly as the pitch of the external propeller increases.
Effective Means of Reading Control for Improving Innovative Competence of Future Mining Engineers
Authors: Lebedintsev Sergey , Fedyanina Lyubov , Gustov Vyacheslav
Published: June 2019

The current level of development of the mining industry requires the use of innovations in the practice of higher mining education based on the achievements of psychology and pedagogy which allow to achieve optimal results in training mining engineers. Foreign language proficiency is an important component of the professional competence of any specialist. To study the communicative abilities of students, it is necessary to search for new learning technologies in the activation of speech activity. The use of innovative technologies in the process of learning to control foreign language reading is a necessary condition for the intellectual and creative development of students – their innovative competence, which is aimed at the formation of professional knowledge and skills for the most effective achievement of innovative goals of their professional activities. The authors share practical and theoretical experience as well as innovative ideas for the construction and successful application of faceted tests that can help overcome the difficulties taking place in decoding text information.
Digitalization of Economic Evaluation of Mineral Deposits
Authors: Janocko Juraj , Ryzhkova Marina , Mamzina Tatiana , Bereznev Sergey
Published: June 2019

The issue of mineral deposit evaluation is very topical and the aim of the present article is to fill a gap, which with far has been empty. The presented results of research are aimed to describe these issues in a comprehensive way. After the changes to the economic systems in many European countries the criteria of assessment and evaluation of mineral deposits have changed significantly, and authors of these “recomputations and calculations” use various methods. In these methods the main provisions are built upon geological and industrial values, specifications and indicators, so the economic trends are not completely considered. Therefore, in coming post-industrial era the structure of mineral resources use has been changed, and the leading methods of mineral deposits evaluation must include sufficient economic values, with a new codification.
Development of a Scientific and Innovative Sphere in Earth Resources Mining Sector of Kazakhstan
Authors: Kurmanov Nurlan , Petrova Mariana , Suleimenova Shakhizada
Published: June 2019

The article evaluates current trends in the development of science and innovation in Kazakhstan. Analysis of scientific and innovation activities in Kazakhstan show that among the main sources of financing science there are almost no business representatives. An assessment of the current state of the national innovation system demonstrates that with the existing system of financing science in Kazakhstan there is no possibility to increase the costs of research and development. The overall reduction in domestic R&D expenditures over the period analyzed had the most negative impact on the financing of basic research. The results of the study show the need to revise some of the value settings for building a national innovation system in Kazakhstan.
Effect of the rotation, tidal dissipation history and metallicity of stars on the evolution of close-in planets
Authors: Bolmont E. , Gallet F. , Mathis S. , Charbonnel C. , Amard L.
Published: June 2019

Since 1995, numerous close-in planets have been discovered around low-mass stars (M to A-type stars). These systems are susceptible to be tidally evolving, in particular the dissipation of the kinetic energy of tidal flows in the host star may modify its rotational evolution and also shape the orbital architecture of the surrounding planetary system. Recent theoretical studies have shown that the amplitude of the stellar dissipation can vary over several orders of magnitude as the star evolves, and that it also depends on the stellar mass and rotation. We present here one of the first studies of the dynamics of close-in planets orbiting low-mass stars (from 0.6 M☉ to 1.2 M☉) where we compute the simultaneous evolution of the star’s structure, rotation and tidal dissipation in its external convective envelope. We demonstrate that tidal friction due to the stellar dynamical tide, i.e. tidal inertial waves (their restoring force is the Coriolis acceleration) excited in the convection zone, can be larger by several orders of magnitude than the one of the equilibrium tide currently used in celestial mechanics. This is particularly true during the Pre Main Sequence (PMS) phase and to a lesser extent during the Sub Giant (SG) phase. Numerical simulations show that only the high dissipation occurring during the PMS phase has a visible effect on the semi-major axis of close-in planets. We also investigate the effect of the metallicity of the star on the tidal evolution of planets. We find that the higher the metallicity of the star, the higher the dissipation and the larger the tidally-induced migration of the planet.