bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of efficiency of wind power plants operation in wind conditions of the Northern Black Sea region of Ukraine
Authors: Podhurenko V , Kovshova I , Terekhov V , Dubovyk N 
Published: January 2021

Abstract
The article presents the results of many years’ experience of industrial operation of wind power plants (WPPs) of the Ochakiv Wind Park. In the course of the research a parametric model of WPP performance was developed; factors influencing the performance of wind power plants in Ukraine were analysed; modern methods of economic and mathematical modelling were studied and appropriate ones were selected to assess the efficiency of WPP operation in wind conditions of the Northern Black Sea region of Ukraine; an algorithm for solving the problem of efficient operation of WPPs in Ukraine has been developed; grounding on six years’ studies of results of the Ochakiv WPP operation in Ukraine unique databases have been created; a model of correlation between the capacity of wind power plant (WPP) FL 2500-100 and wind speed in the Northern Black Sea region of Ukraine was developed; the obtained results were interpreted and conclusions were made based on the parametric model of WPP performance taking into account the specific external factors of the Northern Black Sea region of Ukraine.
Requirements and conditions for ensuring sustainable energy-saving economic development of enterprises
Authors: Yemelyanov O , Petrushka T , Koleshchuk O , Miahkykh I , Sekirozh Y 
Published: January 2021

AbstractThe purpose of this study was to establish criteria and determine the conditions for sustainable energy-saving economic development of enterprises. The relative and absolute types of such development are distinguished. It is found that the absolute type of development occurs when the index of physical output of the enterprise falls within a certain range of values. The length of this interval determines the value of the indicator of the potential for sustainable energy-saving economic development of enterprises. In turn, this value is determined by the values of the four indices. This conclusion is obtained on the basis of building a model of decomposition of the indicator of potential of sustainable energy-saving economic development of enterprises. The theoretical and methodological developments obtained in this work were tested on a sample of 120 Ukrainian enterprises belonging to four industries. Among other things, the hypothesis was confirmed that there is a tendency to increase the share of enterprises in which there was an absolutely stable energy-saving economic development, while increasing the indicator of the potential of such development. It turned out that this dependence for the sample of the studied enterprises is linear.
Methodological aspects of assessing the sustainable development of energy companies
Authors: Prokhorova V , Bozhanova O , Putro A , Dalyk V , Yukhman Y , Azizova K 
Published: January 2021

Abstract
There was given an analysis of existing methods for assessing the level of sustainable development of energy companies, respectively. There has been highlighted the components of sustainable development which are interconnected and are separate objects of management. Methodological aspects of energy company sustainable development assessment are proposed, which are based on an integrated approach, which allow to present sustainable energy company development as a multicomponent phenomenon in the form of a set of sustainable development factors and indicators that shape them.
Predictors of oil shocks. Econophysical approach in environmental science
Authors: Bielinskyi A O , Khvostina I , Mamanazarov A , Matviychuk A , Semerikov S , Serdyuk O , Solovieva V , Soloviev V N 
Published: January 2021

AbstractThe instability of the price dynamics of the energy market from a theoretical point of view indicates the inadequacy of the dominant paradigm of the quantitative description of pricing processes, and from a practical point of view, it leads to abnormal shocks and crashes. A striking example is the COVID-stimulated spring drop of spot prices for crude oil by 305% to $36.73 a barrel. The theory of complex systems with the latest complex networking achievements using pragmatically verified econophysical approaches and models can become the basis of modern environmental science. In this case, it is possible to introduce certain measures of complexity, the change in the dynamics of which makes it possible to identify and prevent characteristic types of critical phenomena. In this paper, the possibility of using some econophysical approaches for quantitative assessment of complexity measures: (1) informational (Lempel-Ziv measure, various types of entropies (Shannon, Approximate, Permutation, Recurrence), (2) fractal and multifractal (Multifractal Detrended Fluctuation Analysis), (3) recurrent (Recurrence Plot and Recurrence Quantification Analysis), (4) Lévy’s stable distribution properties, (5) network (Visual Graph and Recurrence based) and (6) quantum (Heisenberg uncertainty principle) is investigated. Each of them detects patterns that are general for crisis states. We conclude that these measures make it possible to establish that the socially responsive exhibits characteristic patterns of complexity and the proposed measures of complexity allow us to build indicators-precursors of critical and crisis phenomena. Proposed quantitative measures of complexity classified and adapted for the crude oil market. Their behavior in the face of known market shocks and crashes has been analyzed. It has been shown that most of these measures behave characteristically in the periods preceding the critical event. Therefore, it is possible to build indicators-precursors of crisis phenomena in the crude oil market.
Environmental Management in Condition of Stable Development and Efficient Use of Resources
Authors: Matukova H , Khrapkina V , Bahashova N , Matukova-Yaryha D , Mamanazarov M 
Published: January 2021

Abstract
In the article there is the necessity of strategic management as a new conception of management in the conditions of environment unstable and dynamic is established, the aspects of strategic management theoretical and methodological are considered as a new perspective direction to the management in the conditions of unstable external environment. The article provides theoretical and methodological recommendations for the development of a model of a strategic management system for an enterprise, its resources and a design algorithm in different periods in an unstable market environment. Nowadays, it is of primary importance to develop innovative technological processes that could provide the foundation for waste-free green production with high engineering and economic indices and integrated resource use.
Hazards and risks in assessing the impact of oil and gas companies on the environment
Authors: Khvostina Inesa , Oliinyk Viktor , Semerikov Serhiy , Solovieva Victoria , Yatsenko Valerii , Kohut-Ferens Oksana 
Published: January 2021

Abstract
This paper considers an algorithm for constructing an integrated assessment of the environmental risk of enterprises based on risk indicators. An overview of risk assessment methods is given. To find and process the research results, the method of expert assessments and elements of the fuzzy logic method were used. The membership function is constructed for the classification of the current value of the environmental risk factor. Based on the obtained numerical results, the ranking of the studied variables is given. A generalized indicator of the level of environmental risk of an oil and gas enterprise is found.
Pricing Model For Eco-Innovative Products On The Basis Of Its Technological Readiness
Authors: Kozyk Vasyl , Mrykhina Oleksandra , Fadyeyeva Iryna , Lisovska Lidiya , Novakivskyj Ihor , Zinchuk Iryna 
Published: January 2021

Abstract
A pricing model for eco-innovative products has been developed based on its technological readiness for commercialization in the context of sustainable economic development. It is proved that the pricing model for eco-innovative products can be based on an integral indicator that includes a set of factors influencing the level of its technological readiness – from the point of view of the developer (manufacturer, seller) and market perception (buyer, consumer, etc.). The formalization of such an indicator is carried out on the basis of algorithms of fuzzy set theory. The developed method is tested on a number of types of eco-innovative products developed by Ukrainian business entities. The obtained price integral indicators are determined by a fuzzy number with a certain range, which makes it possible to take into account the features characteristic of a particular market situation due to the level of technological readiness of eco-innovative products. This method allows you to achieve a higher level of price accuracy.
Online training of specialists in the energy industry
Authors: Bodnar L , Chebykin A , Belenko K , Yaremchuk N , Kiv A 
Published: January 2021

Abstract
We considered the psychological and pedagogical problems arising from online learning, especially in a pandemic. Since in these conditions the lecturer’s emotional impact on the audience is depleted, the task is to use the achievements of information technologies to find ways to “bring” the audience closer to the lecturer. A computer program has been developed that uses the image recognition function so that in the online learning process the lecturer receives information about the emotional state of the audience directly during classes. The developed program can be used for the practical implementation of the proposed approach.
The role of personnel motivation in the risk management system of energy companies with employee stock ownership
Authors: Mnykh O , Dikan O , Yukhnov B , Kvasova L , Shkvaryluk M 
Published: January 2021

Abstract
The impact of motivation of the personnel of joint-stock companies on increasing the efficiency of their economic activities and reducing management risks has been examined. The world experience in the development of property and management decentralization has been investigated. The current state of the functioning of companies with employee stock ownership has been analyzed, and main contradictions in the distribution of their income have been given. Specific recommendations have been given to resolve these contradictions in order to apply them by joint-stock companies of the energy sector of Ukraine in their economic activities.
Monitoring the economic stability of the company’s business processes as a prerequisite for sustainable development: investment and security aspects
Authors: Arefieva O , Piletska S , Khaustova V , Poberezhna Z , Zyz D 
Published: January 2021

Abstract
The economic stability of the company’s business processes was monitored, especially during the period of implementation of the benefits of sustainable development, which will attract new investment flows and ensure economic security. A conceptual model for monitoring the economic stability of the company’s business processes has been developed. A methodical approach to monitoring the economic stability of the company’s business processes by influencing the financial, personnel, marketing, innovation, production components depending on the qualitative and quantitative characteristics of available resources is proposed.
Preliminary exploration of processability and self-lubricating properties of polythioetherimides/PEEK blends and their composites
Authors: Yuan Ping , Qiu Yong , Wu Juying , Li Xiaomin , Xing Tao , He Ren , Zhang Kai , Huang Yuhong , Duan Chunjian , Tao Liming , Lu Ai , Wang Tingmei 
Published: January 2021

Abstract
Polythioetherimides (STPI) were first synthesized from 3- and 4-chlorophthalic anhydrides, and 4,4’-oxydianline and 1,3-bis(4-aminophenoxy) benzene by a two-step poly- condensation procedure via their soluble poly (amic acid) precursors. Then a series of isomeric polythioetherimides/polyetheretherketone (STPI/PEEK) blends samples with compositions (wt%) of 30/70, 40/60 and 50/50 were prepared and characterized. The structure characterization of STPI demonstrated by FTIR, Raman and elemental analysis show that there are little S-S bonds of the copolythioetherimides chains. Thermal, rheological, ultrasonic nondestructive testing technique, mechanical measurements and dynamic thermomechanical analysis were conducted to process and assess the morphology and mechanical properties of the STPI/PEEK blends, and 30/70 weight composition of STPI/PEEK was preferred. There are few voids or air gaps in the molding samples. The samples of STPI/PEEK-30/70 show two relaxations at 164.2 °C and 243.5 °C, an average tensile modulus of 1.264 GPa, an average bending elastic modulus of 2.061 GPa and a bending strength of 78.3 MPa. Finally, the friction-wear characteristics of STPI/PEEK composites with solid lubricants such as graphite, MoS2 and PTFE were investigated, indicating a promising way to develop a STPI-based thermoplastic for tribological applications.
One–step template–free fabrication and capacitive properties of flower–like polyaniline in strong acidic solution
Authors: Yang Lifeng , Liu Yeping , Wu Yuanfeng , Li Yunting , Qin Zongyi 
Published: January 2021

Abstract
Three-dimensional hierarchical nanostructured polyaniline (PANI) was constructed through a simple and efficient template-free frozen polymerization of aniline in strong acid condition for fabricating high performance electrode for supercapacitor. The morphology and structure of flower-like PANI was investigated, and its charge storage ability was evaluated. The PANI electrode exhibited the specific capacitance of 428.5 F g−1 at a current density of 1 A g−1, the capacitive retention remains 78.8% from 1 to 10 A g−1, and cycling retention of 62 % after 1000 cycles, exhibiting its great potential application as the supercapacitor electrode materials.
Synthesis, Characterization and Biological Activity of Two Novel transition metal complexes of pyrazolone
Authors: Chen Yating , Fan Yipeng , Zhang Jingling , Zhang Shuhua 
Published: January 2021

Abstract
Using 2-hydrazinopyridine, dimethyl butynedioate and sodium methoxide as raw materials, a new pyridine-pyrazolone derivative containing multiple nitrogen coordination atoms was synthesized through a multi-step reaction, namely the ligand 1-(2-pyridine)-5-hydroxyl -1H-pyrazole-3-carboxylic acid methyl ester (HL). Using solvothermal method, two novel transition metals Co and Zn complexes of pyrazolone were synthesized. The structures were characterized by infrared spectroscopy, XRD and X-ray single crystal diffraction. Notably, MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay showed that 2 displayed relatively high cytotoxic activity against Hep-G2 and MGC80-3 cancer cells.
High performance CH3NH3PbI3-based photodetector fabricated in ambient condition by doctor-blading deposition
Authors: Li Shuigen , Qiu Guangxiong , Xie Xiangyu , Li Cheng , Fu Haiyan , Wu Runsheng , Yang bingchu 
Published: January 2021

Abstract
High-quality CH3NH3PM3 perovskite thin films in air via doctor-blading technology of in-situ heat treatment were prepared, the resulting perovskite film has the advantages of large crystal domains, good stability and repeatability. Based on the perovskite film, the perovskite photodetectors with such a simple structure of glass/ CH3NH3PbI3/Au were constructed, and the high resulting responsivity (R) of 5.70 AW−1 was achieved, the as fast as rise and fall response speed of 14.0ms and 13.4ms were showed, which indicates that the perovskite films via doctor- blading have a potential application prospect in constructing low-cost and large-area optoelectronic devices.
Progress in the preparation, stability and functional applications of Pickering emulsion
Authors: Guo Qinxin 
Published: January 2021

Abstract
Due to the excellent properties, Pickering emulsions have been widely applied in the fields of biomedicine, food, cosmetics, agriculture, etc. Nowadays studies on Pickering emulsions have become a hotspot in the science field. This article synthesizes various of literature and reports around the world, conducts an in-depth analysis of the mechanism and influence factors of the stability of Pickering emulisons, and summarizes the function and application in different fields. It is expected to provide reference for further studies and the development of new Pickering emulsion.
Synthesis of Novel NiFe2O4/Fe3O4 Nanotube arrays as flexible negative electrodes for Supercapacitor Applications
Authors: Sun Baolong , Wang Ni , Hu Wencheng 
Published: January 2021

Abstract
Electrode materials with specific morphologies and microstructures can help to speed up the charge transfer to a certain extent and provide more electrochemically active sites in electrochemical reactions. In this work, NiFe2O4/Fe3O4 nanotube arrays were synthesized on the stainless steel mesh through an ion-exchange reaction involving Zn(OH)2 nanorods under the hydrothermal condition. By analyzing the electrochemical performances of the supercapacitor electrodes, the optimal electrode could be obtained by the hydrothermal process at 160 °C. It has a specific capacity of 258.8 F g−1 at a current density of 1.25 A g−1 as a negative electrode. This work provides a new strategy to prepare nickel-iron oxide as negative electrode materials in supercapacitor applications.
Application of copolymerization in preparation of superhydrophobic surfaces
Authors: Ma Jinsheng , Wang Xiaoning , Wang Rui 
Published: January 2021

Abstract
Superhydrophobicity refers to a wetting phenomenon in which the contact angle with water is greater than 150°and the sliding angle is less than 10°. Superhydrophobic surfaces have been extensively studied due to its self-cleaning, corrosion resistance, anti-icing, oil-water separation and other characteristics. Among the studies, copolymerization is one of the important methods in the preparation of superhydrophobic surfaces. In this paper, the mechanism of superhydrophobicity and the models are introduced. Then, in view of the three ways to obtain superhydrophobic surfaces through copolymerization - modification, directly synthesis of superhydrophobic Copolymer, preparation of superhydrophobic coatings or coatings - the methods are summarized, and the related applications are briefly described. Finally, possible future researching directions are summarized and prospected to provide reference for the application of copolymerization in preparation of superhydrophobic surfaces.
Preparation and Properties of a Kind of Hydrophilic Polyimide Film with Quaternary Ammonium Salt Structure
Authors: XueFang  , Su Guiming , HaijianJiang  , MingyueChen  , XiaodongLiu  , MeihuiSong  , XiaochenZhang  
Published: January 2021

Abstract
We synthesized a polyamide acid by copolycondensation reaction using diphenyl ether tetraacid dianhydride (ODPA) as the dianhydride monomer, diaminodiphenyl ether (ODA) and N-methyl-2,2-diaminodiethylamine (diethylamine) as the diamine monomer. Then the polymer with side-linked branch sulfonate structure was synthesized, and the structure of quaternary ammonium salt was added to the polyamide acid. A hydrophilic PI film was prepared by coating and thermal imidization process. The main influence factors in the formation process of hydrophilic PI film were discussed, then its hydrophilic properties and thermal properties were tested. The results show that diethylamine can react with lactone in the PI molecular chain in the DMAc system. The introduction of quaternary ammonium salt significantly improves the hydrophilic properties of the polyimide film surface,the water contact angle of the film dried at 130°C is 58.065°. Above 140°C, breakage and decomposition of the -N+SO3
− structure bond will occur, and the hydrophilic property will decrease.
Thermal properties of a series of tetra-functional quinoxaline-based benzoxazine/monofunctional benzoxazine blends
Authors: Feng Tiantian , Li Yanxia , Zhang Xiumei , Cao Yuhua , Li Lin 
Published: January 2021

Abstract
: In this article, a series of tetra-functional quinoxaline-based benzoxazine/ monofunctional benzoxazine (P-a) blending resins were prepared. Differential scanning calorimeter (DSC), dynamic mechanical analyzer (DMA) and thermogravimetric analysis (TGA) were utilized to study the curing behavior of blends and heat resistance and thermal stability of the corresponding resins. The obtained blends show lower onset and peak exothermic temperatures than that of a phenol/phenylamine-based benzoxazine. Additionally, the cured blends possess much better heat resistance, higher char yields, and better thermal stability than monofunctional benzoxazine resins.
Withdrawn as duplicate: Advancing ambulatory pharmacy practice through a crisis: Objectives and strategies used in an ambulatory care action team’s response to the COVID-19 pandemic
Authors: Do Tina , Luon Steph , Boothe Kimberly , Stutsky Martha , Renauer Marie 
Published: January 2021

Abstract
This article has been withdrawn due to a publisher error that caused the article to be duplicated. The definitive version of this article is published under DOI 10.1093/ajhp/zxab063.
The “Hug Flap”: Surgical Technique to Enhance the Aesthetic Breast Projection in Autologous Breast Reconstruction
Authors: Hamdi Moustapha , Al Harami Sara , Chahine Fadel , Giunta Gabriel , De Baerdemaeker Randy , Zeltzer Assaf 
Published: January 2021

Abstract

Background
Obtaining a natural breast mound shape contributes profoundly to a symmetrical and successful outcome in breast reconstruction.

Objectives
The authors sought to describe a new and efficient technique that enhances breast projection in delayed breast reconstruction employing abdominal free flaps and compare it with the current standard methods utilized.

Methods
The charts of 490 consecutive patients who underwent delayed breast reconstruction employing free abdominal perforator flaps were reviewed between 2007 and 2017. Three methods of breast reconstruction were compared: undermining, de-epithelialization, and the “hug flap” (HF). In the newly described technique, the caudal mastectomy skin was de-epithelialized, and then the medial and lateral thirds were undermined and folded over to cover the central part. The rates of complications and secondary corrections were analyzed between the 3 groups.

Results
There were 570 free abdominal flaps performed. The de-epithelization technique was the most commonly utilized (328 cases) followed by the undermining technique (153 cases). The HF technique was employed in 89 cases. The majority of HFs were performed in unilateral breast reconstruction. Bilateral cases were conducted in only 12 patients. The need for additional fat grafting was significantly (P = 0.003) less required in the HF group compared with the undermining and de-epithelializing groups (12% vs 28% and 21%, respectively).

Conclusions
Although all breast-enhancing options can be mixed and matched based on the surgeon’s preference and experience as well as each patient’s needs, the HF can be considered as an adjunct tool to provide adequate flap projection and enhance breast symmetry.

Level of Evidence: 4