bluuebunny/crossref_metadata_2025_split huggingface dataset:
A resource theory of quantum measurements
Authors: Guff Thomas , McMahon Nathan A , Sanders Yuval R , Gilchrist Alexei 
Published: March 2021

Abstract
Resource theories are broad frameworks that capture how useful objects are in performing specific tasks. In this paper we devise a formal resource theory quantum measurements, focusing on the ability of a measurement to acquire information. The objects of the theory are equivalence classes of positive operator-valued measures, and the free transformations are changes to a measurement device that can only deteriorate its ability to report information about a physical system. We show that catalysis and purification, protocols that are possible in other resource theories, are impossible in our resource theory for quantum measurements. Standard measures of information gain are shown to be resource monotones, and the resource theory is applied to the task of quantum state discrimination.
Assessment on the Environmental Impact of Conventional Energy Forms
Authors: Yu Mingyi 
Published: March 2021

Abstract
As the dominant energy forms in the world, fossil fuels, nuclear and hydropower occupy over 90% of energy resources in total. The greenhouse gas is the emission of fossil fuel incineration, which causes global warming and climate change. Nuclear and hydropower are renewable energy and almost do not have waste during power generation. However, both nuclear and hydropower have potential or long-term negative influences. According to the current energy field, this article mainly analyzes the direct and potential effects of three types of energy forms and predicts future targets in the energy field.
Research on failure rate of self-service payment terminal of power supply company based on cloud computing
Authors: Xu Ming Feng , Song Fei , Sun Yan Jun , Lang Shan , Ma Wen Long 
Published: March 2021

Abstract
With the continuous development of power companies, the load on the user side continues to diversify, the traditional payment methods in the power system are constantly updated, and the scale of self-service payment terminals has been fully expanded. However, as the scale of self-service payment terminals becomes larger and terminal equipment functions become more abundant, the failure rate of terminal equipment is also on the rise. Cloud computing can provide a large number of low-cost computing and storage resources, and has the characteristics of easy deployment and strong scalability, which can meet the software and hardware needs of big data analysis. Therefore, the effective integration of cloud computing and big data technology and the use of their respective advantages have important practical significance in the big data analysis of equipment failure. Completing the prediction of the failure rate of the terminal equipment according to the designed big data analysis framework will help to arrange the maintenance plan of the terminal equipment reasonably and improve the reliability of the power self-service payment terminal.
A Probe into the Accuracy of Thermal Runaway Simulation Model of Lithium-ion Battery under Adiabatic Condition
Authors: Lai Yilin , Yang Kai , Liu Hao , Gao Fei , Zhang Mingjie , Xu Wen 
Published: March 2021

Abstract
For the safety problem of lithium-ion battery, thermal abuse early warning is needed to be established, for which the main point is to analyze the mechanism and to establish the thermal abuse model of single lithium-ion battery. This article used 10Ah ternary lithium-ion battery as the research object and used simulation software to build thermal abuse simulation model. The accuracy of simulation model was verified by comparing the temperature simulation result with temperature data from adiabatic environment thermal abuse experiment. According to the results, heating trend of temperature of the simulation under adiabatic condition is approximately the same as that of ARC adiabatic test temperature. Before the end stage of self-heating period, the error remains within 5%; at the end of self-heating stage, the error is around 5-10%; after entering thermal runaway stage, the error can reach 36%. Missing the equation of reactions between electrode and additive, and internal short-circuit is the main reason causing the error of the simulation result.
Research on anomaly data mining method of new energy field stations based on improved Adaboost algorithm
Authors: Wang Nan , Wang Yanzhuo , Cheng Yan , Guan Ti , Ma Qiang , Sun shumin , Guan Yifei , Wang Yuejiao , Wang Shibo 
Published: March 2021

Abstract
Traditional anomalous data mining methods require a lot of prior knowledge, which leads to low data mining integrity and efficiency. For this reason, a new energy field abnormal data mining method based on improved Adaboost algorithm is proposed. After pre-processing the new energy field data, the algorithm is improved by introducing dynamic weight parameters to address the shortcomings of the Adaboost algorithm. After calculating the degree of data anomaly using the direct push belief machine, the neural network is used to reduce the error value of the Adaboost algorithm, and finally the output of the Adaboost algorithm is used to realize abnormal data mining. The simulation experiment proves that the researched abnormal data mining method has high data integrity and high efficiency.
Finite element model of bolt looseness of wind turbine tower
Authors: Wu Enjun , Chen Hongjun , Qu Wenfeng , Huo Chong , Liang Zhengzhao , Huang Xiangchao , Li Zhenrong , Li Hang , He Bing , Yang Tao 
Published: March 2021

Abstract
Flange bolt looseness is one of the common problems of wind turbine tower, and is the main factor leading to the collapse of wind turbine tower. In this paper, based on ANSYS Based on the finite element analysis method of workbench, the local finite element vibration analysis model of tower drum is established and verified by experiments. Based on this model, the influence of bolt looseness number, wind strength and wind direction on the phase difference between the upper and lower flange plates is studied. The results show that the flange plate with certain bolt looseness ratio is at the top and bottom. The absolute value of the phase difference between the plates is obviously larger than that when the bolts are tightened. Therefore, the phase difference between the upper and lower flanges can be used as the basis for judging the looseness of the bolts in the tower flange.
Research on power environment monitoring system of information room
Authors: Song Xin , Hao Chenggang , Zhang Xin , Wang Yifei 
Published: March 2021

Abstract
With the increasing number of equipment in the information room, the timed patrol inspection by duty personnel alone cannot effectively monitor the entire room environment in real time, and there are large potential safety risks. This paper introduces the technical scheme and construction scheme of power environment monitoring system for information room of Siping Power Supply Company, Jilin Province Power Co., Ltd. Through the construction of the system, unified operation monitoring of all equipment in the information room is achieved. Once the system is applied, and once a fault is found, the system will send an alarm signal to the on duty personnel at the first time. It also informs operation and maintenance personnel by SMS to handle the malfunction in time, so as to ensure the safe and stable operation of the information room equipment and system.
Adaptability analysis of solar water heating system in Chongqing area
Authors: Ma Xiaoxue , Wang Xiaotong , Meng Fanlin 
Published: March 2021

Abstract
According to the simulation software TRNSYS, based on meteorological parameters and and the distribution of solar energy resources in Chongqing area, the dynamic simulation method is used to analyze the application effect of the solar water heating system in Chongqing area. The results show that the application of solar water heating system in Chongqing area has potential, but it has obvious seasonal characteristics, with sufficient solar radiation in summer, followed by spring and autumn, and the least in winter. The simulation calculation shows that the monthly thermal efficiency of the collector fluctuates between 0.2 and 0.7 throughout the year, with an average value of 0.51. The solar fraction basically increases with the increase of solar radiation, which also has obvious seasonal characteristics.
Empirical Analysis on the Impact of Energy Output and Industrial Structure Adjustment on Economic Growth in Shanxi Province, China : from the Perspective of SVAR
Authors: Liu Yaru , Liu Lang 
Published: March 2021

Abstract
Based on the time series data of Shanxi Province from 1989 to 2018, this paper constructs the SVAR model (structural Vector autoregression). Using impulse response function, variance decomposition and other tools, this paper makes an empirical study on the relationship between economic growth, industrial structure adjustment and energy output in Shanxi Province. The correlation and contribution rate among energy output, industrial structure adjustment and economic growth are evaluated dynamically. The main conclusions of this paper are as follows: there is a long-term stable relationship among the economic growth, the proportion of the gross output of the secondary industry and the output of the primary energy; when the proportion of the Gross Domestic Product of the secondary industry and the output of the primary energy have a dynamic impact on economic growth, their responses are not the same; by comparison, the impact of industrial restructuring on the economic growth of primary energy is greater than the pulling effect of output.
Analysis on Optimal Mode of Operation of Small and Medium Pumped Storage Power Station
Authors: Zhang Yi , Zhang Feng , Li Youchun , Mo Jianguo , Tang Lv 
Published: March 2021

Abstract
With the rapid development of new energy and peak-shaving of power grid, pumped storage power station has been paid more and more attention as an economical and reliable means of peak-shaving. Pumped storage power station can play the role of peak-shaving frequency modulation, accident reserve, black start power supply and so on. It is an effective means to ensure the safe operation of power grid, optimize the economic operation of thermal power units and promote the absorption of new energy. This paper first briefly introduces the operation mode of pumped storage power station, and analyzes the operation benefit of pumped storage power station from the actual operation demand of power grid. Further, the main operation mode of pumped storage power station is analyzed, and the operation mode suitable for small and medium pumped storage power station is put forward.
Analysis and Research on Turbulent Kinetic Energy of Three-way Regulating Valve
Authors: Hou Yingzhe , Wu Hao , Li Zhong , Xiong Jinying , Yan Xiaozhe , Hu Yiming , Zhu Haoqiang , Gao Haitao , Cui Qiguan , Wang Gang 
Published: March 2021

Abstract
In a system with the 3-way regulating valve, low energy consumption high efficiency based on fluid dynamics CFD software, for the 3-way regulating valve of the 3 d simulation for internal flow property research, obtained the pressure within the valve flow turbulence kinetic energy and turbulence dissipation rate etc. The results show that the flow field information with the increase of the opening, the seat area on the turbulence kinetic energy and turbulence dissipation rate increases sharply, change law instead of the seat position. The existence of transition cone can greatly reduce the turbulent kinetic energy and the turbulent dissipation rate of the upper seat in the wide opening range and the valve in the small opening range. Long-term avoidance of the valve working in the minimum-opening condition will be beneficial to the protection of the valve.
A three-degree-of-freedom bistable piezoelectric energy trapping method
Authors: Qiao Xiaojie , Lu Yingchun 
Published: March 2021

Abstract
The use of piezoelectric energy harvester to convert environmental low-frequency vibration energy into electrical energy has become a research hotspot in the field of new energy. However, the piezoelectric energy harvester developed at present has high natural frequency and narrow energy trapping band, which has become one of the main reasons restricting the application of this technology. To solve this problem, based on the principle of nonlinear three degrees of freedom, this paper proposes a three-degree-of-freedom bistable piezoelectric energy trapping method. Firstly, the three-degree-of-freedom bistable energy capture method is modeled, and the energy capture frequency and nonlinear force of the model are derived; then use COMSOL software to simulate the model. The simulation results prove that this model not only reduces the natural frequency of the piezoelectric energy harvester, but also the introduced nonlinear magnetic force significantly broadens the energy trapping band. Finally, the actual measurement and comparative analysis of the proposed method prove the effectiveness of the proposed method.
Visualization system of power communication room based on Internet of Things
Authors: Song Xin , Hao Chenggang , Zhang Xin , Wang Yifei 
Published: March 2021

Abstract
With the rapid development of Internet of Things(IoT) technology and power communication technology, the operational stability of the communication room has become an important factor for the safe and stable operation of power communication equipment. Realizing the real-time monitoring and unified management of the power and environment of the computer room is of great significance to ensuring the stable and reliable operation of the communication equipment in the computer room. In view of this, this paper proposes to use the IoT technology to design a set of visual data system and display system interface. The commissioning and operation of the system show that the system can realize real-time monitoring and centralized management, which is of great significance to the safe and stable operation of the converter station.
Numerical simulation of the dryer drum radiation area using coupled CFD and DEM methods
Authors: Li Haozhen 
Published: March 2021

Abstract
This article investigates the use of coupled computational fluid dynamics (CFD) and discrete element methods (DEM) to simulate the heat transfer by thermal radiation in the material containing zone of an aggregate drum dryer for hot mix asphalt production, a 250mm long material containing zone structure was selected. For the asphalt binder to properly coat the aggregate, the aggregate must be completely dry. This process is accomplished in a counter-flow drum heated by a burner with the flights attached inside the drum walls to facilitate heat transfer. The materials containing drum area was tested and simulated, and the material temperature rise and drum temperature were obtained, with an error of less than 5% from the experimental results, indicating that the simulation is feasible. The results of the study show that the best heat radiation effect is achieved with a semi-contained flight; the material temperature increases and then decreases as the output increases. The flame diameter increases by 1.5 times, the heat radiation effect is enhanced. The preliminary results may provide some guidelines for operating the dry drum efficiently and designing drum to control quality of material mixes and save energy.
Research on regional adjustment method of power grid operation and maintenance cost level based on information entropy considering multiple differences
Authors: Mao Yudong , Ma Lin , Ren Yan , Tong Ruigang , Liu Jia , Zhang Si , Zhao Lei , Liu Jinpeng 
Published: March 2021

Abstract
Scientific investment in asset operation and maintenance is a key issue for grid companies. The current grid operation and maintenance cost level is affected by multiple factors such as the natural environment and the market environment. How to combine the actual differences in different regions to propose an adjustment and optimization method for the grid operation and maintenance cost level can further improve the level of precision investment in operation and maintenance costs, and better Facing the operating shock brought by the complicated internal and external situation. This paper first uses the system dynamics model to identify the factors affecting the operation and maintenance cost of power grid assets from different dimensions such as the natural environment and the market environment, clarifies the impact mechanism from different perspectives such as quantity and price, and determines the input variables for the analysis of the difference in operation and maintenance cost levels, combined with the results of variable selection, information entropy theory is introduced to construct an adjustment and optimization model based on information entropy. Finally, empirical research is conducted in different regions, and the results show that the model can provide theoretical support and method reference for the reasonable determination and dynamic adjustment of operation and maintenance cost level under the requirements of precise investment management and control.
Study on injection and production of oil and water wells in steam flooding test field of thin oil reservoir
Authors: Yu Haiwei 
Published: March 2021

Abstract
On the basis of dynamic changes of steam injection wells and extraction wells, the influencing factors of steam injection oil production in transition zone are analyzed and summarized. According to the dynamic relationship of oil-water wells, the feasibility of steam flooding in this zone is analyzed. According to the field conditions, the reasonable well spacing and injection parameters are optimized to provide reliable field data for the application of steam flooding in this zone.
Theoretical analysis of open - circuit ground source heat pump drying system
Authors: Wu Hao , Liu Wanfu , Qi Wuqin 
Published: March 2021

Abstract
In order to apply the ground source heat pump in the drying industry, a set of open-circuit ground source heat pump drying system was designed for theoretical analysis and compared with the closed air source heat pump drying system, The results are shown below: When the drying temperature (air temperature required for drying) is 40°C-60°C, the system performance coefficient( COP) of the drying system is 3.2-5.2. Dehumidification per unit energy consumption( SMER) is affected by the external ambient temperature. The highest and lowest SMER corresponding to the ambient temperature of 20°C are 4.4 and 1.4, and the highest and lowest SMER corresponding to the ambient temperature of -10°C are 2.6 and 1.1. When the ambient temperature is high and the drying temperature of drying materials is low (less than 50°C or so), the open-circuit ground source heat pump drying system has a slight advantage over the closed air source heat pump drying system, and SMER is higher.
A Feasibility Study about Cellulosic Ethanol Industrialization
Authors: Zhu Guanyu 
Published: March 2021

Abstract
The second-generation of biomass ethanol, also known as cellulosic ethanol, is a major topic of discussion. The immaturity of pretreatment technology is one of the main factors restricting the scale-up of the second-generation bio-ethanol technology. Appropriate pretreatment methods can improve the accessibility of cellulose, reducing the cost of separating cellulose, hemicellulose and lignin, while increasing the yield of cellulosic ethanol. Pretreatment methods are mainly divided into four categories, namely chemical pretreatment, physical and chemical pretreatment, physical pretreatment as well as biological pretreatment methods. By analyzing the principles, effects, advantages and disadvantages of the popular pretreatment methods, whether they were suitable for industrialization were assessed. According to the results, chemical treatment methods are most frequently used but restricted to the high cost, difficulty in recovery, the impact of organic solvents and the safety problems. Physicochemical pretreatment methods are popular but has the problem of high energy cost. Besides, biological methods are not suitable for industrialization due to the high time-consuming and low degradation efficiency. Physical pretreatment is currently only a supplement of chemical pretreatment and physicochemical pretreatment, while due to its advantages such as the efficiency of pretreatment, reduction of the dosage of chemicals and low cost, it is worth being studied in the future.
Mechanical Properties of Main Steel Pipeline P92 Steel in Ultra-Supercritical Unit after 50,000 h Service
Authors: Li Xinmei , Zhang Zhongwen , Du Baoshuai , Zou Yong , Suo Shuai , Li Wen 
Published: March 2021

Abstract
The mechanical properties of P92 steel after 50,000 h service were explored using the mechanical property tests, such as tensile test, bending test, and impact test by means of scanning electron microscopy (SEM) and energy disperse spectroscopy (EDS), etc. The results show that the strength, elongation, and plasticity of P92 steel after the 50,000 h high-temperature service meet the requirements specified in the related standards, with a certain aging embrittlement phenomenon, which is closely related to the structure aging after the service. The precipitates after the high-temperature service are mainly M23C6, Laves, and compounds of Nb, where the first two phases, which are large, present weak binding force to the matrix with embrittled grain boundary, but the dispersed fine compounds of Nb can be effectively pin the dislocations, and have outstanding solid solution strengthening effect, which is good for improving the strength, plasticity, and toughness of P92 steel.
Extraction and separation of unsaturated fatty acids from sunflower oil
Authors: Yong Qiwen , Yuan Guoming , Li Haijun 
Published: March 2021

Abstract
In this paper, natural sunflower seed oil was used as the raw material to extract mixed fatty acids with potassium hydroxide-methyl alcohol solution, and then benzene and methanol were added for methylation reaction, and finally the saturated and unsaturated fatty acid methyl ester were separated by urea encapsulation method. The optimal reaction temperature of the mixed fatty acid extraction process, the optimal dosage ratio of urea to mixed fatty acid methyl ester and the optimal freezing temperature in the urea encapsulation process were explored. Fourier transform infrared spectrometer (FT-IR) and GC-MS were used to analyze. The results show that after methyl esterification of the extracted fatty acids, the separation efficiency of the saturated fatty acid methyl esters by the urea encapsulation method was extremely high, and the content of the unsaturated fatty acid methyl ester in the filtrate was up to 99.67%, which made a solid foundation for further demethylation to prepare unsaturated fatty acids.
A New Method for the Synthesis of Cobalt Complex of Tetra-2,3-(5-tert-butyl-pyrazino) porphyrazine
Authors: Wang Dejun , Li Hui , Jiang Xiren , Zhao Chaocheng 
Published: March 2021

Abstract
A two-step synthesis of cobalt complex of tetra-2,3-(5-tert-butyl-pyrazino) porphyrazine as porphyrazine derivatives carrying six-membered pyrazine rings annulated at the periphery of the tetrapyrrolic macrocycle was described starting from 3,3-dimethyl-2-butanone, selenium dioxide, 2,3-diaminomaleonitrile, metal salts, and urea. In comparison with the previously reported multistep procedure, this new multicomponent protocol for the preparation of synthetically, biologically, and technologically relevant tetra-2,3-(5-tert-butyl-pyrazino) porphyrazine includes some important aspects like the fast and simple reaction, easy workup procedure, and high atom economy.