bluuebunny/crossref_metadata_2025_split huggingface dataset:
Parameter Matching and Optimization of Composite Clean Energy Power Supply For PHEV
Authors: Sun Jingxia 
Published: July 2021

Abstract
The idea of composite power supply solves the problem that the specific power and specific capacity of a single battery restrict each other. The specific power of composite power supply is higher than that of a single battery, and the specific energy is higher than that of a single super capacitor, so that the power components are no longer restricted by a single factor. According to the performance requirements of the vehicle, the basic parameters of each component of the vehicle power supply are determined, and then the components are matched reasonably according to their performance advantages to get the appropriate power supply required by PHEV. The parameters of the composite power supply are optimized by using the iterative algorithm of dynamic programming to achieve the best matching of power and energy, and the matching results are verified by simulation.
Research On Clean Energy and New Energy Vehicle by Multidimensional Preference Analysis
Authors: He Chang , Li Qian 
Published: July 2021

Abstract
This paper mainly studies the product selection preferences of consumers of new energy vehicles and the personal attribute factors that affect their selection preferences. By using the multidimensional preference analysis model, consumers can evaluate the preferences of the selected mainstream new energy vehicles and evaluate the product positioning attributes of the vehicles. The results show that consumers have significant preference differences in the product positioning of new energy vehicles. Reliable quality products and economical and practical products are preferred by consumers, while fashion technology products and luxury comfort products have great market potential in the future. In addition, personal attributes including age, income and career stage have an important impact on consumer choice preference.
Study on the Construction Method of Tree Topology in Low Voltage Station Area of Power System
Authors: Fan Jianjun , Sun Jing , Liu Xinzhong , Li Zhimin , Wang Xinku , Cao Shengnan , Lei Jiakun 
Published: July 2021

Abstract
Based on the comparison and analysis of bus topology, star topology, tree topology, ring topology and network topology, the tree topology of low voltage station area is established according to the correlation between output line and input line of each distribution box. Experiments show the realizability of this method.
Power Lines Extraction Using UVA LiDAR Point Clouds in Complex Terrains and Geological Structures
Authors: He Yong , Dong Limeng , Zeng Fanrong , Dong Chengxi , Yao Jianan 
Published: July 2021

Abstract
In order to boost current power line extraction accuracy of transmission lines in complex terrains and cope with uneven point cloud densities, an advanced method for extracting power lines from elevation point cloud features is proposed. First, the elevation filter algorithm is improved by space segmentation and point cloud density analysis to reflect thick extractions of power lines; then, a feature extraction algorithm in which the threshold of Hough line detection decreases along with the increase of elevations is proposed to accurately extract power lines. The improved power line based on elevation feature extraction can effectively solve the problem of incomplete detection of power lines, which attached to the electric tower caused by the undulation of terrains. This research provides a reference for power line extraction and power line early warning of large-scale transmission lines in complex scenarios.
Finite Element Analysis of Peltier Effect based Thermoelectric Energy Conservation Cooling System for Microprocessors
Authors: Chu Weishen , Lv Jiahe , Hong Nan 
Published: July 2021

Abstract
Chip cooling technologies have been attracting researchers’ interests as the wiring density in integrated circuits increases dramatically in recent chip design. A Peltier effect based thermoelectric cooling system is designed for microprocessor cooling. A 3D Finite Element Analysis model is developed to validate, analyse, and optimize the performance of the thermoelectric cooling system. The effects of microcooler size and activation current have been studied by thermo-electric coupled field analysis. It has been found that the Peltier effect based thermoelectric cooling system can successfully reduce the temperature of microprocessors and the optimum activation current for the cooling system has been determined.
Research on Reliability of Grid Connected Photovoltaic Renewable Generation System
Authors: Qadeer Abdul , Huawei Li , Ikram Muhammad Talha 
Published: July 2021

Abstract
Renewable energy sources are increasingly being implemented in power systems to curb global warming and improve generation adequacy. These renewable sources include Hydro, wind, tidal, and solar power systems. Since Pakistan experiences decent solar irradiation throughout the year, the most viable renewable energy option is photovoltaic generation. Before solar systems are implemented, the proposed design is first simulated using design software such as MATLAB-Simulink to correct and adjust parameters to attain the DC voltage and current through the irradiation and environment temperature. Reliability studies and analysis are performed on the simulated systems to ascertain the success and long life before the system components’ failure. In this thesis, the grid-connected PV system’s reliability model established based on the reliability block diagram method using the MIL-HDBK-217F handbook. The handbook provides the methodology of calculating failure rates of specific physical electronics operations. The mean time to failure (MTTF) and Mean time to repair (MTTR) of the system is calculated from the overall system reliability. Photovoltaic power output varies greatly, and it is dependent on solar irradiation and temperature, resulting in intermittent and variable energy production. All of these considerations have a significant effect on the entire system adequacy of the power generation system. This study uses a probabilistic analytical methodology to develop comprehensive reliability models of grid-connected Photovoltaic generation systems.
Enhanced hole extraction in green energy perovskite solar cell by CuOx/spiro-OMeTAD bilayer with improved performance
Authors: Xiao Li , Wang Guanxiong , Yao Jianxi 
Published: July 2021

Abstract
Hole transport layer is of vital important for improving the photo-to-electron efficiency of perovskite solar cells. In this study, we investigate the performance of meso-structure perovskite solar cell applying bilayer materials for improving hole extraction ability. By simulating the performance of perovskite solar cell using wxAMPS software, CuOx is chosen to be ideal candidate of inorganic hole transport material which can moderate device property. The optimized value band offset in schematic diagram shows that photo-generated holes could be extracted from perovskite layer to spiro-OMeTAD efficiently by applying CuOx layer at the interface of perovskite/spiro-OMeTAD. Moreover, the experiment results show that Jsc of device increase to 19.5 mA/cm2, FF increase to 65.9% and total PCE reaches 12.3% by adopting CuOx/spiro-OMeTAD bilayer as hole transfer layer. Simultaneously, hysteresis decreases from 2% to 0.7% and integrated Jsc increase from 14.8 mA/cm2 to 16.03 mA/cm2. The PL results also confirm the mechanism of carrier extraction, which is consist with experimental results. It suggests that applying CuOx/spiro-OMeTAD bilayer is an efficient way to improve performance of perovskite solar cell.
Incremental Capacity Curve Based uniformity analysis for the energy and capacity utilization rate of lithium-ion Batteries
Authors: Zhang Xuenan , Shi Wei , Liu Huan , Zhao Yangmei 
Published: July 2021

Abstract
The consistency problem of the cells will lead to a decrease in the energy and capacity utilization rate of battery, and even cause safety problems. The incremental capacity curve method can be used to study the uniformity of cells and it can acquire the internal parameter status directly, but its accuracy is limited by the curve drawing. This paper proposes a consistency analysis method to obtain the missing points through curve fitting and obtain a high-precision square capacity increment curve. This method uses partial least squares to solve the multicollinearity between feature parameters and introduces the variable projection importance index to judge the importance. Experiments show that after analysis, the rechargeable capacity of the battery can be increased by more than 9% compared with the traditional method, and it has good robustness and accuracy.
Analysis of the memory effect of lithium iron phosphate batteries charged with stage constant current
Authors: Zhao Yangmei , Shi Wei , Zhang Mei 
Published: July 2021

Abstract
Lithium iron phosphate batteries are widely used in various fields and have long been considered to have no memory effect. It is not until recent years that the memory effect of lithium iron phosphate batteries has been discovered and studied. In engineering applications, electric vehicles are usually charged with stage constant current. Here, we first briefly explain the process of memory effect generation. Make the battery have a memory effect under different charging methods. Compare and analyze the characteristics of memory effect under each charging method for optimization ideas of development ChaoJi and other high-power and high-current charging technologies.
Grey Evaluation Method of DC Current Transformer Transient Characteristics in High-Voltage Transmission System
Authors: Ji Feng , Lu Shufeng , Xu Minrui , Chen Gang , Lu Zigang , Guo Jiahao 
Published: July 2021

Abstract
The transient characteristics of the current transformer and its evaluation method are the key factors affecting the protection device, system security, and stability. Therefore, to verify and evaluate the rise time, maximum overshoot, transient delay, and periodic stability of the DC transformer, a DC transformer calibration system is proposed. Based on the calibration system, the index basis of transformer evaluation is obtained, and the evaluation method of DC transformer characteristics based on grey theory is proposed. Finally, through the transient performance test, the transient characteristic parameters of the tested DC transformer are obtained, and its evaluation model is established. Through case analysis, the quantitative evaluation scores of different transformers are given. The method proposed in this paper has an important reference value in the field calibration of the DC transformer.
Study on the oxidation treatment of sodium sulfide by sodium persulfate
Authors: Meng Mei , Gao Pengxuan , Zheng Bo , Liu Zhuang , Chen Xing , Wu Baoyang , Zhao Hanlei , Yang Ziwang 
Published: July 2021

Abstract
In view of a large amount of sulfur ions contained in oilfield sewage, finding an efficient method for desulfurization to reduce the sulfide content of sulfide in oilfield sewage has become one of the topics urgently studied by oilfield workers. In this paper, the oxidation method is used to treat sulfur ions in oilfield sewage, and it is oxidized to harmless elemental sulfur or high-priced sulate. The effects of pH, molar ratio, reaction time, temperature and concentration on the removal rate of sulfur ions were investigated. The optimal reaction conditions were determined that the initial concentration of simulated water was 75 mg/L, pH=8, the molar ratio of sodium persulfate and sodium sulfide was 1.2: 1, the reaction time was 30 minutes. The maximum removal rate of sulfur ions by sodium sulfate can reach 96.11% at 35°C.
A novel state of health estimation method for lithium-ion battery based on partial incremental capacity and Support vector regression
Authors: Yang Bo , Jin Peng , Liao Xiawei , Ma Xiaomin , Sun Wei 
Published: July 2021

Abstract
State of Health (SOH) is critical for lithium-ion batteries as it ensures the safety of batteries’ health condition and provides a basis for retirement of the batteries. In order to provide an accurate estimation of the SOH, a novel hybrid estimation method based on the partial incremental capacity and Support vector regression (SVR) is proposed in this paper. Firstly, the Savitzky-Golay method is applied to smooth the initial incremental capacity curves under the period of constant current charge. Then the key health features are extracted from the partial incremental curve theoretically and selected through correlation analysis methods. Finally, an SVR model is constructed to estimate the SOH. Several battery datasets under different cycling test conditions are used to validate the effectiveness of the proposed method. The result shows that the proposed method can provide a reliable and accurate estimation for SOH.
Study on treatment technology of industrial and mining wasteland in Shenmu City
Authors: Shi Lei , Yang Liangyan 
Published: July 2021

Abstract
In order to implement the basic state policy of cherishing and rationally using land and strictly protecting cultivated land, effectively break the bottleneck of strategic resource development and urban development, optimize the land use structure, raise the level of economical and intensive land use, promote the balance between urban and rural areas and the sustainable economic and social development, and realize the overall development and protection of cultivated land. In the pilot project of reclamation and utilization of historical abandoned industrial and mining lands in Shenmu City, management requirements such as total control of resource utilization, two-way regulation of supply and demand and difference are implemented to standardize the reclamation and utilization behavior of abandoned industrial and mining lands. The waste residue covered by the mining area shall be stripped and cleared, the buildings and structures in the mining area shall be dismantled, and all the waste residue and construction waste shall be transported to the designated accumulation point. Then, as needed, it will be cleared into farmland, forests, grasslands and rivers. Results: The reclamation area of the project covers 42 plots, with a total area of 2146.4 mu. The construction scale of the project is 124.8122hm2. Through the reclamation of abandoned industrial and mining land, 22.1038hm2 of new cultivated land was added in the project area, with a rate of 17.71%. The new grassland area was 32.2119hm2. After reclamation, the land utilization rate of the project increased significantly, reaching 93.38%. It promotes the balance of dynamic indexes of cultivated land in Shenmu City, maintains the dynamic balance of total cultivated land in Shaanxi Province, and improves the production and living conditions of local farmers. The project has great ecological benefit, obvious social benefit and certain economic benefit. The unification of social benefit, economic benefit and ecological benefit is realized, which accords with the goal of industrial waste land reclamation.
Research on Optimal Operation Strategy of Distributed Energy Based on Distribution Network Planning
Authors: Zheng Liming , Sun Min , Xu Genqi , Zhang Zhengbo 
Published: July 2021

Abstract
Distributed energy is an energy supply mode based on load demand side. It aims at maximizing energy utilization and environmental benefits, integrates and optimizes various energy demands and resource allocation of users, and adopts a new energy system with demand response design and modular allocation. Because most of the energy it consumes is renewable and clean, it is environmentally friendly. Energy community is an important part of active distribution system. The method of power grid planning is studied and analyzed, and the energy management model of energy community is established. On this basis, the active distribution system is studied comprehensively and solidly. The research results can effectively improve the economy and reliability of active distribution system, and promote the large-scale grid connection of renewable energy. By using the heat storage system to periodically transfer heat load, the contradiction between the ratio of electric load to heat load in microgrid and the electric heat ratio of cogeneration system can be alleviated, thus realizing efficient and economical electric heat dispatching.
Performance Test and Application Research of New Gemini Wetting Dust Suppressant
Authors: Li Ming , Qiu Linling , Yang Huaizhen , Fei Xudong 
Published: July 2021

Abstract
In order to solve the problem of low efficiency of dust-catching by water mist to the hard-to-wetting and respirable dust, a new wetting type dust suppressant of Gemini was proposed based on the analysis of the wetting effect of water mist. Based on the evaluation indexes of surface tension, contact Angle, wetting and settling rate of dust spray, the performance of polyquaternary ammonium salt AG-101, dodecanol polyoxyethylene etheryl dimethyl ammonium chloride, octyl alcohol polyoxyethylene etheryl dimethyl decyl ammonium chloride and macromolecular cationic PCD Gemini surfactants were optimized, and had carried on the dust-suppression performance in a certain open-pit iron mine field experiment research. The results show that the comprehensive dust suppression performance of mass concentration of 2.0% of quaternary ammonium salt polymer AG-101 is the best, indoor experimental tests showed the dust rate is 4.2 times the speed of water, the field test showed that the initial wetting speed is 4.4 times the speed of water, and the action time of dust and water mist suppression is shortened obviously. The field application proves that the total dust removal efficiency is 82.3% (water is 56.6%), which is 45.4% higher than that of water. The dust removal efficiency of respirable dust is 92.1%, which is 16.5% higher than that of water. The research results provide a new dust suppressing agent for optimization of mine spray dust removal.
The Application of Nanoenzymes in Biology Detection
Authors: Li Yifei 
Published: July 2021

Abstract
Nanozyme is a special kind of artificial mimic enzyme of chemical synthesis that has the unique properties of nano-materials as well as the catalytic efficiency and enzymatic reaction kinetics similar to natural enzymes. With all its specific features, Nanozyme has the advantages of good stability, low making cost and easy preparation, overcoming the shortcomings of the complicated preparation and purification process of natural enzymes and their changeable catalytic activity and stability which is easily affected by outside restrictions. Based on its unique superiority, nanozyme has exhibited broad prospects for its practical application in many fields of chemical detection, especially in environment and biology. With different designs of compositions and morphological forms, nanozymes enable quick and relatively accurate detection of nucleic acid, macro-molecular substances, like micro-molecular substances like glucose, hydrogen Peroxide in certain tissues, which surely casts a bright light on the convenient and effective test in biology.
Simulation-based sensitivity analysis and optimization of narrow strip electrostatic sensor
Authors: Chen Jiange 
Published: July 2021

Abstract
Aiming at the problems of low sensitivity and large interference to the dust flow field when the rod electrostatic sensor detects pipe dust, the narrow strip electrostatic sensor is proposed in this paper. Firstly, the high fidelity 3D finite element model of narrow strip electrostatic sensor, pipe and dust particles is established by COMSOL software. By gridding the model, the electrostatic field distribution in the pipeline under the action of charged dust is simulated. Then the spatial sensitivity distribution of the narrow strip electrostatic sensor in the dust pipe is analyzed. Finally, the influence of the length, width and thickness of the strip electrostatic sensor on the spatial sensitivity of the narrow strip electrostatic sensor is analyzed, which provides a basis for the structural design of the high sensitivity narrow strip electrostatic sensor.
Study on Treatment of Mineral Processing Wastewater by Ozone Combined Catalytic Oxidation
Authors: Chen Guoqiang , Chen Bin , Yang Xiaosong , Shao Linan , Sun Chao 
Published: July 2021

Abstract
At present, most non-ferrous metal mines treat Mineral Processing Wastewater by natural degradation of tailings pond. Some residual mineral processing agents were decomposed after the waste water passed through the tailings pond, but a large number of mineral processing agents remained in the water quality could not meet the discharge standard requirements. Conventional oxidation process has disadvantages of large dosage and high cost. In this study, ozone composite catalytic oxidation method was used to treat COD of mineral processing wastewater. According to the experimental results, when the dosage of homogeneous catalyst Mn2+ was 2mg/L, the volume ratio of heterogeneous catalyst dosage wastewater and KYO-1 catalyst was 3:1, and the dosage of ozone was 20mg/L, COD of wastewater after oxidation decreased from 155 to 35mg/L.It meets the discharge standard and the operation cost is about 0.8 yuan/ton of water.
Exposure to dibutyl phthalate induced the growth inhibition and oxidative injury in Dunaliella salina
Authors: Wei Chenghui , Wang Shuang , Hu Xiaochen , Zhang Jing , Chen Jie , Zhang Qichen , Wang Yuan , Wei Jie 
Published: July 2021

Abstract
Dibutyl phthalate (DBP) is a persistent organic pollutant that poses a threat to aquatic ecosystems. In order to study the ecological toxicological mechanism of DBP on marine microalgae. Dunaliella salina was chosen as the experimental material. We investigated the cell growth, hydrogen peroxide (H2O2) content, malondialdehyde (MDA) content, superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities of D. salina exposed to different DBP concentrations. Exposure to low concentrations of 0.1 mg/L DBP promoted the cell growth of D. salina. As the concentrations of DBP increased, the growth of D. salina was gradually inhibited. The GPx and SOD activities of D. salina reduced significantly exposed to DBP concentrations of 50 and 100 mg/L. When D. salina was exposed to 100 mg/L DBP, the MDA and H2O2 contents of D. salina increased with time from the second day. The results provided theoretical support for studying the toxicity mechanism of DBP.
A New Method for the Dynamic Comprehensive Evaluation of Regional Eco-efficiency: Evidence from Jiangsu Province
Authors: Peng Fang , Zhang Ling , Shi Yun 
Published: July 2021

Abstract
Regional eco-efficiency is an important indicator for observing the harmonious coexistence of man and nature, which also provides a quantitative idea for the observation of the effect of China’s Ecological Civilization Construction. Among the various studies of regional eco-efficiency evaluation, problems of interacting indicators and dynamic comparisons are still waiting to be resolved. Based on this situation, this paper proposes a new evaluation approach, integrating bi-capacity, VIKOR method and time series entropy technology, to explore the dynamic comprehensive evaluation of regional eco-efficiency. Eco-efficiency performances of 13 cities in Jiangsu Province during 2014 to 2018 are also be calculated by this new approach in case study.
Design of electronic delay ignition device for a certain type of HESH
Authors: Zhang Xinhua , Miu Yingbing , Niu Yuqiu , Shang Wei 
Published: July 2021

Abstract
Aiming at the low precision of the gunpowder delay body of a certain type of HESH (High-explosive squash-head), an electronic delay ignition device was used to replace the traditional delay body. The design uses an independent setter to charge the electronic delay ignition device, set the delay time and detect the online status,etc. The delay time of HESH can be adjusted within the predetermined range, and the precision of the delay ignition time can be improved from 0.6s to 0.03s,which can obviously improve the performance of HESH.