bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on Ecological Water Requirement of Vegetation in Wuhai Based on GIS
Authors: Zhang Zhen , Zhang Panyue , Zhang Guangming 
Published: January 2021

Abstract
Wuhai City is located in Inner Mongolia, belongs to the arid and semi-arid area of Northwest China, where precipitation is scarce, vegetation coverage is low and evaporation is large. With the exploitation of coal resources, the cultivated land area is gradually reduced and the surface is seriously damaged. After mining, a large number of mines and coal gangue piles are left behind, causing serious ecological problems. In order to ensure the normal growth of vegetation in Wuhai City, it is of great significance to study the ecological water demand of vegetation in Wuhai City for the realization of reasonable allocation of water resources, ecological restoration of mines and sustainable development of the city. Based on remote sensing satellite image data, combined with land use type map and ground meteorological data, this paper analyzes the spatial and temporal variation characteristics of normalized difference vegetation index (NDVI) in Wuhai City, calculates the evapotranspiration of vegetation in reference year, and obtains the ecological water demand of vegetation in Wuhai City by using area quota method according to different water demand spatial areas. The results showed that: in the total ecological water demand of vegetation in Wuhai City, the water demand of medium coverage grassland was the largest, reaching 407.59 mm, while that of forest land was the smallest, reaching 309.01 mm. The other water requirements from large to small are: low coverage grassland, high coverage grassland, sparse forest land, shrub land. Grassland accounts for 98% of ecological water demand, while woodland only accounts for 2%. The total ecological water demand is 326 million m3.
Comparison of personal exposures to gaseous pollutants under public transportation modes during and after the SFTR
Authors: Zhang Mengya , Zhang Yao , Yu Nu 
Published: January 2021

Abstract
During the Spring Festival Travel Rush (SFTR) in China, many people travel and public vehicles are always full. This research studies the air pollutant exposure of commuters under five transportation modes: China railway high-speed train (CRH train), subway, bus, car, and walk. The routes are selected between Nanjing and Xuzhou. The volatile organic compounds (VOCs), carbon dioxide (CO2), and formaldehyde (HCHO) levels are compared in five different transportation modes. The results indicate that personal exposure level to VOC and HCHO in CRH train is the lowest and relatively stable. So taking the CRH train during the SFTR may be the best choice. During the Corona Virus Disease 2019 (COVID-19) outbreak, spraying 70% alcohol for disinfection in public spaces significantly increased the personal exposure level to VOCs.
Feasibility study of nonlinear model predictive control in mitigating stick slip in drilling
Authors: Wang Xueying , Ni Hongjian , Wang Ruihe 
Published: January 2021

Abstract
Drilling is an essential and expensive process to extract conventional and unconventional underground resources, like oil, natural gas and geotherm. Stick slip is one of the problems involved in rotary drilling that cause inefficiency and premature downhole tool failures. This work investigates the feasibility of using nonlinear model predictive control (NMPC) in mitigating stick slip. To make real-time control possible, a new balanced truncation method is used to reduce system order, and advanced step NMPC method is used to remove computational delay. Simulation results demonstrate that the proposed NMPC method can run in real time and eliminate stick slip. Compared to the advanced ZTorque controller, slight to moderate torsional vibrations still occur in the NMPC. The competitive advantage of the NMPC is that it does not need high-frequency drill pipe torque measurement.
The behavior response in Zrbrafish Danio rerio to mirror images
Authors: Qiu Ning , Chu Qiang , Zheng Tianli , Peng Shitao , Zhang Huaqing 
Published: January 2021

Abstract
Behavioral response experiment of fish to mirror images is one of the main ways to test the social and aggressive behavior. The behavior changes of Zrbrafish Danio rerio in tanks contain different number of mirrors was tested in this study. The result indicated that the latency of zebrafish from entry tank which contains mirrors to start moving (P < 0.05) and their frequency of midline crossing (P < 0.001) were all lower than control group (contains no mirror), and decreased with increasing numbers of mirrors. The total swimming time of zebrafish in tank contains mirrors increased with increasing numbers of mirrors and significantly higher than control group (P < 0.001). Additionally, the time spent of zebrafish in side that contains mirrors significantly higher than the reverse side (P < 0.05), and this difference degree increased with increasing numbers of mirrors.
Experience and Enlightenment of Energy Transition in Germany
Authors: Li Nan 
Published: January 2021

Abstract
As a leading developed nation of energy transition, Germany has achieved great progress of energy transition by a series of policies such as renewable energy legislation, shutdown of nuclear power stations, phase-out of coal-fired power and starting the carbon emissions trading system. During the process of energy transition, Germany also encountered issues like retarded grid construction, slow progress of carbon emission reduction in mobility sector, excessive subsidy for renewable energy. As a latecomer of green transition, China needs to prudently consider and deliberate Germany’s experience and lessons of energy transition.
Analysis on energy conservation and economy of natural gas distributed energy system
Authors: Zou Yanyan , Xie Mengfan 
Published: January 2021

Abstract
By analyzing two operating modes of a natural gas distributed energy system, this paper brings forward an optimal operating mode, i.e. full utilization of waste heat from a gas-fired engine at full load. In this mode, the prerequisite that primary natural gas energy is efficiently utilized can be met and the energy efficiency of the distributed energy system can be improved for the realization of energy cascade use and efficient use of natural gas.
Rational resource in the context of forming a model of using fuel and energy resources expenditure
Authors: Zelinska H , Andrusiv U , Fedorovych I , Khvostina I , Astafiev O 
Published: January 2021

Abstract
The article defines the general provisions of formation and substantiates the main components of the overall energy balance, presents the algorithm for its calculation according to the indicators of the current forms of state statistical reporting on energy. It is proposed to monitor the energy balance of the state to eliminate unresolved problems of the fuel and energy complex of Ukraine. The formation of provision model and use of fuel and energy resources of the economy of Ukraine is detailed. It is determined that an important direction of state development is the introduction of energy-saving technologies and increases its own production of fuel and energy resources. Therefore, the basis for building a theoretical and analytical model of supply and use of fuel and energy resources is the relationship between different components of the economy: forms of ownership, centralization and decentralization, innovation and investment, environmental orientation and economic efficiency and more. The relationship between the economic development of the state and its environmental security is proved.
The sustainable development of gas transmission companies of Ukraine through the formation of an effective energy saving mechanism
Authors: Zapukhliak I , Dzoba O , Romashko O , Krykhivska N , Nemish Yu 
Published: January 2021

Abstract
The annotated article deals with the features of formation and functioning of the energy saving mechanism for business under the implementation of sustainable development concept. Herewith, the energy saving mechanism has been considered as an organic component of the mechanism of business management enabling to integrate energy saving problems with effective current business management problems. The main focus of this study is to develop the algorithms and the evaluation methodology for energy efficiency of the enterprise. In particular, the article suggests evaluating the effectiveness through the following stages: the assessment of energy saving potential use of the enterprise; the development of a system with operating performance indicators of the energy saving mechanism; the determination of the integrating indicator of the energy saving mechanism. The article approves the suggested methodology by means of highly specialized gas transmission companies and discovers the level of use of such components of energy saving potential of the enterprise, as technics and technology, finances, management, personnel. An assessment of the average annual energy saving potential was performed and the forecast of the integrating indicator of the energy efficiency mechanism of the gas transmission companies was carried out The suggested methodological approach has been proven to be useful in the system of energy saving at the enterprise.
Composition and energy value research of pyrolise gases
Authors: Kryshtopa S , Kryshtopa L , Panchuk M , Smigins R , Dolishnii B. 
Published: January 2021

Abstract
Energy values of gaseous pyrolysis products of typical forest and aquatic plant biomass of Europe are investigated. Theoretical research of main characteristics of samples of typical plant biomass of Europe such as pine, thorn, microcystis, elodea is produced. Methodology and planning of experimental studies of process of pyrolysis of plant biomass are formulated. Experimental researches of composition of gas pyrolysis products of different types of plant biomass for different temperatures were carried according to laboratory conditions. Pyrolysis of plant biomass was carried out using a specially designed and manufactured pyrolysis plant the main part of which is a pyrolysis reactor. Installation made by our department is intended for slow pyrolysis. In research for determine presence and percentage of product yield qualitative and quantitative gas chromatography assays were used. The lower calorific value of gaseous pyrolysis products of samples of typical forest and aquatic plant biomass of Ukraine are calculated. As a result of calculations it was determined that during pyrolysis of aquatic plants and algae mixture of the obtained gases had the highest values of lower calorific value: 17,10-17,15 MJ/kg – for microcystis and 16,45-16,50 MJ/kg – for elodea. Gas obtained from pyrolysis of pine wood had the highest values of lower calorific value in the range of 13,8 to 13,85 MJ/kg. The lower calorific value of pyrogas obtained from thorn samples ranged from 12,6 MJ/kg to12,65 MJ/kg.
Renovation and sustainable development of the industrial energy enterprise: economic and legal management mechanism
Authors: Bezuhla J. , Kononenko Ya. , Bytiak O. , Zaitseva A. , Zacharchyn H. , Korin M. 
Published: January 2021

Abstract
The article improves the economic and legal management mechanism of renovation and sustainable development of the industrial energy enterprise, based on the dominant system, regularity and sequence of effective management decisions in strategic and tactical aspects, which combines goals, objectives, directions and problems of renovation sustainability. Using the hierarchy analysis method, main goals and activities of the industrial enterprise, aimed at improving sustainable development, were identified. The system of budgets allows to assess in advance the consequences of the current state of affairs and the implemented strategy of the financial condition of the enterprise. Budgeting becomes the link between strategic management by senior management and operational management at lower levels. Budgeting helps aim managers at all levels to achieve the tasks set before their centers of responsibility and increase the professionalism of managers. Budgeting contributes to a detailed study of activities of units and relationship between the centers of responsibility in the enterprise, which is relevant today.
Problems of sustainable development of ecosystems
Authors: Yeremeyev I , Dychko A , Remez N , Kraychuk S , Ostapchuk N 
Published: January 2021

Abstract
The present paper provides the concept of self-renewing of ecosystems. It is shown that multidimensionality and mutual exclusion of individual components of the environment make the problem of optimization, i.e. achieving the conditions of sustainable development, too difficult. However, the goal of sustainable nature management is possible with the existence of ecosystem properties for self-renewal due to the presence of cyclical processes, ecological capacity, migration capabilities of ecosystem components and pollutants metabolism, as well as the use of waste-free and energy-saving technologies. It is proposed to model the ecosystem in the form of the “eight”, which reflects it as a closed cyclic system able for adaptation. When analyzing such a complex system, the following principles should be followed: simplification; consideration of processes in dynamics; considering the possibility of ambiguity, incompleteness and inaccuracy of information; using a risk-based approach to impact assessment; understanding the system as a hierarchical structure able for adaptation and development. It is noted that all local ecosystems in the region are interconnected and affect the characteristics of neighboring local ecosystems, usually requiring the adjustment of resources and connections.
Ecological changes during crisis period
Authors: Kyzym M , Gavkalova N , Lola Y , Prokopovych S , Jain Pradeep 
Published: January 2021

Abstract
The article examines the change of the level of air pollution in world’s countries (ecological changes). We verified two hypotheses. It can be caused by an increase in the level of development of countries accompanied by a change in the level of air pollution and the countries with different rates of economic growth may observe different rates of air pollution reduction in the post-crisis period. To test the hypotheses, hierarchical agglomerative and iterative methods of cluster analysis, and econometric models were used. The annual percentage growth rate of the GDP per capita and percentage of population exposed to ambient concentrations of PM2.5 for 101 countries for 2008-2017 were considered as the research information base. The results showed both significant positive and negative effects of increasing level of economic development and air pollution of the countries with a time lag in one-two year. In addition, the results of an econometric analysis show that there are different dynamics of air pollution level for countries with high, medium and low economic growth rates. The results can be of value for the formation and adaptation of the environmental strategies.
A fuzzy logic inference concerning the degree of greening and resource saving in ecosystems of countries, developing in crisis
Authors: Kucherova H , Pokataeva O , Chala O , Bilska O , Cirella G. T 
Published: January 2021

AbstractThe article conducts an empirical study to assess the degree of ecosystem greening and resource saving based on the generalization of available scientific and practical data in this field and fuzzy mathematics methods. The parameters of ecosystem greening have been classified according to separate functional areas, as a result, the fuzziness of the boundaries of their nature has been proved. In order to evaluate the level of greening and resource saving, appropriate fuzzy mathematics methods have been validated. Fuzzy linguistic information concerning the degree of greening and resource saving of the country’s ecosystem has been generalized and evaluated, the knowledge base of the rules of fuzzy inference according to the Mamdani algorithm has been built. As a result of evaluation under the said model, it has been proven that the economy greening degree in Ukraine is insufficient, as it corresponds to the low level of the economy modernization, high level of environmental capacity, high rates of non-renewable resources usage, high footprint, low level of environmental and resource payments, low labor cost and investment scope. The scientific value of the approach is that it allows obtaining quantitative results of the evaluation of multifaceted parameters of the ecosystems greening and resource saving, the boundaries of which are not standardized and are of a fuzzy nature. The obtained integrated degree of the ecosystem greening and resource saving helps to simplify managerial decisions on how to increase this value. The practical importance of the proposed model lies in its flexibility in terms of using different parameter sets and general structure, allowing to use it for evaluation of the degree of greening at all levels and for all types of ecosystems.
EU agricultural policy and its role in smoothing the sustainable development of the EU’s agricultural areas
Authors: Belinska Yanina , Matvejciuk Liudmyla , Shmygol Nadiia , Pulina Tetiana , Antoniuk Dmytro 
Published: January 2021

Abstract
The article is devoted to the study of general provisions that form the methodological basis for the impact of changes in the context indicators, the dynamics of the main ones on a global scale, observed the change in the agriculture of EU membership. The forecast analysis showed a low probability of significant changes in the share of agriculture in GDP and exports in all groups of countries, which suggest that differentiation between EU countries in terms of agricultural development, will continue. It is proved, that in the EU there are two opposite trends: convergence, which is stimulated by the CAP to ensure the formation of a single EU agricultural complex, and divergence due to the specialization of countries in the production of those agricultural products for which countries have the most favorable conditions. In addition, significant differences and fluctuations in labour productivity should be noted in agriculture, due to differences in natural conditions in different years, fluctuations in the euro exchange rate, which affects the competitiveness of agricultural products in the world market. These results might also be useful for determination the directions of development and improvement of CAP and for using by other countries comparable to the NMS which experience similar integration issues.
COVID-19: crisis or new opportunities time for the agricultural sector of Ukraine
Authors: Kaminskyi A B , Nehrey M V , Zomchak L M 
Published: January 2021

Abstract
COVID-19 is a huge problem for the sustainability of the global economy, both short and long term. The spread of COVID-19 has led to a decline in business and economic activity, as well as a contraction in production - virtually all world economies have shown a sharp decline in GDP. World experience shows that agriculture is less vulnerable to a pandemic. In general, there is a calmer reaction to the demand for agricultural products than for industrial ones. The impact of agricultural production volume on the real GDP of Ukraine is investigated with a distributed-lag model on the data for the period 2008-2020. The effects of the impact distribute almost evenly between the four quarters of the year, which means that the lockdown effects in the agriculture sector will affect the GDP of Ukraine for a long period. The decline in production, the closure of markets and borders, the cancellation of orders led to the fact that the agricultural sector faced serious logistical problems. In addition, the economic downturn has affected farmers’ access to financial resources. However, COVID-19 also opened new opportunities for the Ukrainian agricultural sector: accelerating and expanding the process of digitalization, the opportunity to expand the market for export products, and increase skilled and unskilled labor. The authors propose six steps to ensure the sustainable development of the agriculture sector of Ukraine.
A New Strategy of Constructing Mechanical Enhanced and Electrical Conductive Meta-aramid/Polyacrylonitrile Hybrid Fibers
Authors: Wang Zengxiao , Li Ting , Yu Junrong , Hu Zuming , Zhu Jing , Wang Yan 
Published: January 2021

Abstract
Proper method for constructing electrical conductive m-aramid fibers without sacrificing its excellent integrated performance is still a challenge. Here a new strategy is utilized to construct electrical conductive PMIA/PAN hybrid fibers. No sensitizers or activators are needed in this method, contrast to traditional electroless plating methods. Specifically, the resulted PMIA/PAN hybrid fibers maintained a high tensile strength of 4.7 cN/dtex. Furthermore, the CuS-coated PMIA/PAN hybrid fibers (PMIA/PAN-CuS) exhibited high conductivity.
Wetting of carbon by molten aluminum under ultrasonic field
Authors: Zhao J T , Jiang Z M , Zhu J W , Zhang S D , Li Y L 
Published: January 2021

Abstract
Ultrasonic field couple technique has become an effective way to regulate and control the behavior of liquid-solid interface such as wetting, mass transfer and structure in the crossing field of materials science and acoustics. At present, there is no suitable experimental method and technology to systematically study the interfacial behavior regulate and accurately describe the control mechanism of the interfacial structure. In this regard, based on the construction of the “wetting-mass transfer-structural evolution” trinity framework relationship, through the systematic research of the interface behavior of aluminum melt, the experimental method and technology of the interface behavior of aluminum liquid-solid under the ultrasonic field are formed. In this paper, the poor wetting of aluminum and carbon in the preparation of Al-Ti-C grain refiner is investigated. The wetting of aluminum and carbon is improved by the synergistic effect of the ultrasonic field and multifunctional flux K2TiF6. The microstructure of aluminum- carbon interface under an optical microscope and scanning electron microscope has been discussed. Meanwhile, the wetting behavior of liquid aluminum on graphite substrate is numerically simulated under ultrasonic field. The results show that the ultrasonic field greatly improves the wetting of aluminum and carbon.
Study on Distribution of Tensile Fatigue Life of Basalt Fiber Composites
Authors: Zhao Guxian , Cao Shenghu , Zhang Jian 
Published: January 2021

Abstract
In order to investigate the tension-tension fatigue life distribution of basalt fiber reinforced polymer (BFRP) composites, 70 specimens were tested at same stress level (70% σ
m ). The test results show that BFRP is heterogeneous and its fatigue life data are of great dispersion. In addition, the statistical analysis shows that the fatigue life distribution of BFRP is highly consistent with the Weibull distribution of two parameters if compared with the normal distribution, and the linear correlation test shows that the goodness of fit is 99.23%.
Synthesis and photoluminescence properties of ultraviolet excited Ba2MgWO6:Sm3+ orange-red phosphors
Authors: Xie Jihuan , Zhang Xiyan 
Published: January 2021

Abstract
In this work, Sm3+-actived Ba2MgWO6 phosphors were prepared through the high temperature solid-state method. The XRD, SEM, photoluminescence spectra and decay curves were surveyed detailly. Under the excitation of 319 nm, the typical Ba2MgW06:0.01Sm3+ phosphor exhibits orange-red emission ranging from 500 to 700 nm with many emission bands ascribed to 4G5/2→6H5/2 (550-600 nm), 4G5/2→6H7/2 (600-640 nm) and 4G5/2→6H9/2 (640-665 nm) transitions of Sm3+ ion. The phenomenon of concentration quenching and decay curves suggest the existence of energy transfer between Sm3+ ions, and the CIE chromaticity coordinates displays that all the obtained samples are situated in the region of orange-red. All the consequences manifest that Ba2MgWO6:Sm3+ orange-red phosphors possess the potential for the application in the white light emitting diodes.