bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sustainability of biogas production: using of Shelford’s law
Authors: Shapovalov Ye B , Usenko S A , Salyuk A I , Tarasenko R A , Shapovalov V B 
Published: July 2022

Abstract
The article is devoted to proposing a method of regulation of biogas installations dissemination using Shelford’s law. It is based on the hypothesis that there is some optimal amount, and on both sides around it, the sustainability of the process will decrease because of biogas production that can affect ecosystems both positively and negatively. It declared that in different countries Shelford’s law graph could be different due to differences in both natural and social conditions. It shows that nowadays some unsustainable experience is taking place (In the case of Germany, it is using useful recourses which have to be grown and in the case of Ukraine, these are low-efficiency technologies which can be harmful to the environment). It proposes approaches to provide more sustainable biogas production using modern technologies and strategic planning.
Substantiating arched support made of composite materials (carbon fiber-reinforced plastic) for mine workings in coal mines
Authors: Bondarenko V I , Kovalevska I A , Podkopaiev S V , Sheka I V , Tsivka Y S 
Published: July 2022

Abstract
This paper studies a new composite materials based on carbon fiber-reinforced plastic, which is planned to be used for supporting the preparatory workings when mining the coal at depths of more than 1000 meters. The composite material made of carbon fiber-reinforced plastic has sufficient lt high physical-mechanical properties, which are even higher than that of low-alloy steel used as the main material for supporting in coal mines. The purpose of the research is to substantiate the model of support (arched three-link) and determine its rational parameters. The calculation of the stress-strain state around mine working, using the support made of composite materials, has been perfomed based on the method of finished elements in the Solid Works software product. In addition, a model of the support for coal mines has been developed on a 3D-printer. This made it possible to conduct additional research on the interaction of the support with the rock mass. Using the Solid Works software, a detailed modeling of the composite supporting system has become possible. The stress-strain state of the rock mass has revealed that support can be used to improve the strength characteristics and prevent uneven pressure distribution around mine workings. A support made of composite materials contributes to the introduction of resource-saving technologies in the mining industry.
Mathematical modeling of processes of technogenic deposits development
Authors: Golik V I , Morkun V S , Morkun N V , Pikilnyak A V , Gaponenko I A , Gaponenko A A 
Published: July 2022

Abstract
The article aims to substantiate the tendency to solve the problem of the mineral and raw material base of non-ferrous metals due to the involvement of technogenic origin in substandard metal-containing raw materials. Critical analysis and systematization of new information on the current state of the mineral and raw materials base of non-ferrous metals and the environmental problems of mining associated with it. New data on the recovery and loss of metals in the process of ore dressing are presented. It is shown that the total value of metals in waste is comparable to the value of potential mineral resources in the bowels. The problems of the use of mining waste should be solved in a single package with environmental problems by creating a single technological cycle for the extraction and processing of industrial minerals of industrial waste, the use of which can make the development of industrial deposits economically viable. The practical significance of the work lies in the possibility of using best practices for non-ferrous metallurgy enterprises that are searching for ways to survive in the conditions of the establishment of market relations.
Assessment of the ecological hybrid threat to industrial area in connection with the vital state of artificial woody plantations in Kryvyi Rih District (Ukraine)
Authors: Kvitko M O , Savosko V M , Lykholat Y V , Holubiev M I , Hrygoruk I P , Lykholat O A , Kofan I M , Chuvasova N O , Yevtushenko E O , Lykholat T Y , Marenkov O M , Ovchinnikova Y Y 
Published: July 2022

Abstract
Among the concepts of sustainable nature management, forest conservation is considered as an important element. The state of forest ecosystem depends on the development trend of the mining and industrial area and the complex of social, ecological, and economic problems of Kryvyi Rih District. The object of this study was assessing the artificial woody plantations as a promising factor for ecological hybrid threat reduce in industrial areas on the example of the Kryvyi Rih Iron Ore Mining and Metallurgical District on standpoint of an ecosystem approach. During 2015-2020, we studied the natural forest ecosystems and the artificial forest plantations, which were located in contrast environmental conditions. Forests are located very unevenly in the Kryvyi Rih District. They are mainly concentrated in River gullies, woody stands of city parks, woody stands of health protection zones, woody stands of city protection forest and woody stands of river protection forest. The woody plantations located on the territories of Kryvyi Rih District are very different in terms of coverage area and don’t reach the optimal level. This woody plantations level allows effect the climate, soil, and water resources. The woody plantations also mitigate the effects of erosion processes, as well as provide more clean air. The artificial woody plantations are an important element of environmental safety in Kryvyi Rih District. The main function of the artificial woody plantations is to maintain the soil in an optimal form for operation. It is also the protection of ground water and the stability of the meso- and microclimate in the region, moreover preserving the biodiversity of the territory’s ecosystems. The artificial woody plantations perform an anti-stress function for residents. It was established that the quality of reforming the ecological approach to greening the city’s territories, as well as preserving artificial woody plantations, was determined by the choice of such a management model and nature management policy. These models together should ensure the competitive ability and long-term development of the artificial woody plantations in Kryvyi Rih District. The maine industrial areas in the world should develop as an environmentally stable and safety metallurgical region in accordance with the principles of sustainable development in the world.
Economic aspects of introducing pumped-storage hydroelectric power plants into the mine dewatering system for distributed power generation
Authors: Mykhailenko O , Budnikov K 
Published: July 2022

Abstract
The paper examines the pumped hydroelectric energy storage potential of mine dewatering system for power generation in a distributed power system. Based on the water inflows that can be used to fill the drainage basins, the following options for pumped-storage hydroelectric power plants (PSHPP) are considered: when groundwater is discharged from only one mine, one hydraulic turbine is installed on the horizon below the surface; with additional discharge of groundwater from neighboring mines – installation of two or four hydraulic turbines at the drainage stages closest to the surface. Comparison was made with grid only system. It is based on net present value (NPV) and levelized cost of energy (LCOE) criteria. Variable parameters were hydraulic turbine water flow and mine power consumption. Also, for a certain combination of parameters, the optimal mine power system was determined. The area of use of the PSHS is estimated. It was found that the smallest economic effect is achieved when the power generation of one hydraulic turbine is close to the power consumption. The area of expedient use of the PSHPP within the limits of parameter variation is 17.2%, 19.6% (base and peak costs of power). This is because power generation drops when the water flow decreases. It does not cover the needs of the mine and there is a power shortage. Thus, the mine power system autonomy is very low. With an increase in water inflow and the number of hydraulic turbines, first up to two and then up to four units, the area of expedient use of PSHPP increases to 51.5%, 55.9% and 50.6%, 72.8%, respectively. However, with low energy consumption and a low water flow, it is still rational to receive electricity from the grid. This is due to a sharp drop in the efficiency of hydraulic turbines and high costs for maintenance and repair of PSHPP equipment, which are not comparable to the cost of purchasing power. So it was noted that with the base cost of electricity and an increase in the number of hydro turbines from two to four, the area of conditions under which the use of PSHPP is justified even decreased by 0.9%. At peak cost, the area increases by 16.9%. The mine power system autonomy is not achieved. In general, the efficiency of using PSHPP for mine dewatering systems is high, but the feasibility of their use should be studied for specific conditions of use.
Spatial organization of the soil macrofauna community in a floodplain forest
Authors: Zhukova Y O , Mytiai I S 
Published: July 2022

AbstractSoil fauna is an important functional component of terrestrial ecosystems. Several hierarchical levels of spatial organization of pedobionts communities can be distinguished: point level, ecosystem level and landscape level. Of particular importance is the ecosystem level of spatial organization where the results of interaction between soil animals and soil and plant environmental factors, as well as the results of the influence of factors of neutral nature are expressed to the greatest extent. The aim of the work is to test the hypothesis that the spatial patterns of soil macrofauna at the ecosystem level can be explained by ecomorphs. Soil animals were sampled in floodplain ecosystems in the Dnieper River valley. Animals were sampled according to a regular grid with recording of local coordinates of sampling points. At the same points, soil properties were measured and geobotanical descriptions of vegetation were made. Phytoindication assessment of environmental factors was carried out on the basis of vegetation descriptions. The soil animal community is represented by high taxonomic and ecological diversity. The spatial distribution of soil macrofauna is not random and is a consequence of environmental factors and causes of a neutral nature. The ratio of these factors varies depending on the scale level. The fine-scale level is represented by factors of neutral nature. Medium- and broad-scale components are determined by soil and vegetation factors. The main spatial patterns of variation in the soil animal community correlate with the ecomorphic features of the animals. The ecomorphic approach allows interpreting the information on the spatial organization of pedobionts communities.
Ecological determinants of algal communities of different types of ecosystems
Authors: Maltseva I A , Shcherbyna V V , Yakoviichuk O V , Pyurko O Y 
Published: July 2022

Abstract
The results of studies of the environmental regularities of the formation of algal communities in soils of various ecosystems in the south of Ukraine are presented. 26 forest, 11 steppe and 3 saline ecosystems were investigated. The research has established the species richness of algae in each ecosystem and produced a multidimensional ordination of algal communities based on the analysis of the main components to clarify the factors that determine the composition of algal communities. The research has established the species richness of algae in each ecosystem and produced a multidimensional ordination of algal communities based on the analysis of the main components to clarify the factors that determine the composition of algal communities. Predictors determined by edaphic conditions and phytocenotic interactions associated primarily with edificators of ecosystems were used for the analysis. The ecological space of the studied ecosystems was formed by four main factors with eigenvalues greater than one, which explained 81.4% of the total variance. PC1 (34.82% of variance) is associated with the type of ecosystem and such edaphic parameters as pH, the availability of moisture in the habitat, and soil mineralization. PC2 (21.98%) reflects changes in the gradients of trophicity (humus content) and granulometric composition of soils. PC3 and PC4 additionally explain 16.04% and 9.27% of the total data variance, respectively. Their values mainly depend on the mineralization, trophicity, and moisture supply of edaphotopes, which, at the level of the composition of algae, is obviously associated with the heterogeneity of the ecological preferences of the algal species themselves, as well as the variability of ecological niches of ecosystems, due to which there are species more typical for other types of ecosystems in the communities. The use of the factor rotation procedure by the Varimax normalized method made it possible to concretize the taxa most associated with the main components: PC1 indicates the various Cyanobacteria species, PC2 – Chlorophyta, Streptophyta and Eustigmatophyceae, PC3 – Xanthophyceae and Euglenozoa, PC4 – Bacillariophyceae.
The concept of sustainability of the urban realm and community as the key feature of the utopia
Authors: Fedak A Y , Linda S M 
Published: July 2022

Abstract
The aim of this paper is to demonstrate the topic of sustainability as a key basis for the formation of utopia on the example of the work of utopians (architects, politicians, etc.) in the historical context, and to compare their approaches to environmentalism with those prevalent and implemented today. The authors identify three conditional periods of utopia formation from the point of view of urban planning, which clearly demonstrate the shift in the approach to solving relevant problems, namely: spreading the idea of an ideal city (on the example of Franciscus Patricius, Ludovico Zuccolo); rejection of the city as a desirable model of human settlement and an attempt to return to nature (works by William Dean Howells, William Morris, Anatole France); a period of active implementation of environmental technologies in projects since the early 20th century (the work by Ernest Callenbach).
Dielectric relaxation and dipole moment studies of hydrogen bonded complexes for enanthamide and valeramide with halogenated phenols using J-band microwave frequency
Authors: Basha A Aathif , Khan F Liakath Ali , Muzammil P , Fasiuddin G S 
Published: July 2022

Abstract
Dielectric investigations of hydrogen bonded complexes of Enanthamide and Valeramide with 4-bromophenol, 4-chlorophenol, 4-iodophenol and 4-fluorophenol in benzene were done at 303K, using a J-band (7.22GHz) microwave bench and dielectric relaxation setup. The permittivity of amides with halogenated phenol binary mixtures was measured in the microwave frequency range at temperatures ranging from 298K to 323K. At microwave frequencies; dielectric relaxation of ternary mixes of polar liquids in nonpolar fluids has been explored. Such investigations give useful information about the intermolecular and intramolecular interactions of solutes and solvent molecules. The dipole meter had a measurement frequency of 2MHz. The different parameters of dielectric, relaxation time (τ
0 ) and the dipole moment (μ) has been evaluated using the single-frequency concentration Higasi approach. The fact that the relaxation time and molar free energy activation of the 1:1 molar ratio are greater than those of other higher molar ratios (i.e. 3:1, 2:1, 1:2, 1:3) confirms the presence of a 1:1 complex structure between the studied systems, as well as a complex formation between the free hydroxyl group of phenols and the carbonyl group of amides. The dielectric relaxation energy parameters (ΔFε, ΔHε and ΔSε) of amides with halogenated phenols in benzene have been computed and compared with the related viscosity parameters. A comparison of these two sets of characteristics reveals that dielectric relaxation, like viscous flow, may be thought of as rate process.
Research on driving fatigue detection based on basic scale entropy and MVAR-PSI
Authors: Wang Fuwang , Kang Xiaogang , Fu Rongrong , Lu Bin 
Published: July 2022

Abstract
In long-term continuous driving, driving fatigue is the main cause of traffic accidents. Therefore, accurate and rapid detection of driver mental fatigue is of great significance to traffic safety. In our study, the electroencephalogram (EEG) signals of subjects were preprocessed to remove interference signals. The Butterworth band-pass filter is used to extract the EEG signals of α and β rhythms, and then the basic scale entropy of α and β rhythms is used as driving fatigue characteristics. In addition, combined with the fast multiple autoregressive (MVAR) model and phase slope index (PSI), short-term data is used to accurately estimate the effective connectivity of EEG signals between different channels, and analyzed the causality flow direction in the left and right prefrontal regions of drivers at different driving stages. Further comprehensive analysis of the driver’s driving fatigue state in the continuous driving phase. Finally, the correlation coefficient value between the parameter pairs (basic scale entropy, clustering coefficient, global efficiency) is calculated. The results showed that the causality flow outflow degree of prefrontal lobe decreased during the transition from sober driving state to tired driving state. The left and right prefrontal lobes were the source of causality in sober driving state, and gradually became the target of causality with the occurrence of driving fatigue. The results showed that when transitioning from a waking state to a fatigued driving state, the causal flow direction out-degree value of the prefrontal cortex on a declining curve, and the left and right prefrontal cortex exhibited the causal source in the awake driving state, which gradually changed into the causal target along with the occurrence of driving fatigue. The three parameters of basic scale entropy, clustering coefficient and global efficiency are used as driving fatigue characteristics, and every two parameters have strong correlation. It shows that the combination of basic scale entropy and MVAR-PSI method can effectively detect the driver’s long-term driving fatigue state in continuous driving mode.
Numerical model of the irradiance field surrounding a UV disinfection robot
Authors: De Matteis Ludovic , Cullinan Michael F , McGinn Conor 
Published: July 2022

Abstract

Objective. New technologies, including robots comprising germ-killing UV lamps, are increasingly being used to decontaminate hospitals and prevent the spread of COVID-19 and other superbugs. Existing approaches for modelling the irradiance field surrounding mobile UV disinfection robots are limited by their inability to capture the physics of their bespoke geometrical configurations and do not account for reflections. The goal of this research was to extend current models to address these limitations and to subsequently verify these models using empirically collected data. Approach. Two distinct parametric models were developed to describe a multi-lamp robotic UV system and adapted to incorporate the effects of irradiance amplification from the device's reflectors. The first model was derived from electromagnetic wave theory while the second was derived from conservation of energy and diffusion methods. Both models were tuned using data from empirical testing of an existing UV robot, and then validated using an independent set of measurements from the same device. Results. For each parameter, predictions made using the conservation of energy method were found to closely approximate the empirical data, offering more accurate estimates of the 3D irradiance field than the electromagnetic wave theory model. Significance. The versatility of the proposed method ensures that it can be easily adapted to different embodiments, providing a systematic way for researchers to develop accurate numerical models of custom UV robots, which may be used to inform deployment and/or to improve the accuracy of virtual simulation.
Exploratory examination of environmental protection behaviors in a hospital setting using the theory of planned behavior and ethical leadership
Authors: Tsai Angela Yi Jing , Tan Alex Yong Kwang 
Published: July 2022

Abstract
Most research focused on understanding the general environmental awareness or attitudes around the world, targeting residents, students, or undergraduates. There were limited attempts to understand the environmental protection behaviors in Taiwan healthcare sector. A questionnaire survey was designed with current healthcare personnel in Taiwan as target population. From the theory of planned behavior and ethical leadership, structural equation modelling allowed a better explanation of the social-psychological indicators affecting environmental protection behaviors in the healthcare sector. Attitude, subjective norms and perceived behavioral control are positively impacted by ethical leadership. Environmental protection behavior is significantly influenced by environmental protection intention, while environmental protection intention is strongly affected by perceived behavioral control which is the strongest predictor, followed by attitude. However, there is insignificant correlation of subjective norms to environmental protection intention, due to the weaken social connection among healthcare personals, especially with the heavily burdened workload and restrictive measure during the COVID-19 crisis in a hospital environment.
Strongly correlated superconductivity with long-range spatial fluctuations
Authors: Kitatani Motoharu , Arita Ryotaro , Schäfer Thomas , Held Karsten 
Published: July 2022

Abstract
We review recent studies for superconductivity using diagrammatic extensions of dynamical mean field theory. These approaches take into account simultaneously both, the local correlation effect and spatial long-range fluctuations, which are essential to describe unconventional superconductivity in a quasi-two-dimensional plane. The results reproduce and predict the experimental phase diagrams of strongly correlated system such as cuprates and nickelates. Further studies reveal that the dynamical screening effect of the pairing interaction vertex has dramatic consequences for the transition temperature and may even support exotic mechanisms like odd-frequency pairing. We also discuss the dimensionality of layered materials and how to interpret the numerical results in two dimensions.