bluuebunny/crossref_metadata_2025_split huggingface dataset:
Practical application of advanced bioengineering plastics in sports facilities and fitness equipment
Authors: Lei Genghua 
Published: April 2021

Abstract
As a new type of engineering material, advanced bioengineering plastics have been gradually applied in sports equipment for its properties, common materials, and advanced bioengineering plastics. The application and performance advantages of advanced bioengineering plastics in sports equipment and protective equipment mainly include: low density, high strength, strong toughness, not easy to be corroded and aged, and easy to be processed and formed, etc. In this paper, the future development space of plastic composite materials is further analyzed, and some feasible application strategies are put forward, in order to provide some feasible references for relevant practitioners.
Research and Design of Fast and Light Bearing Gripper Manipulator Summary
Authors: Li Sipan 
Published: April 2021

Abstract
This article is based on the situation that domestic and foreign bearing manufacturers still need a lot of labor costs to complete the finished bearing grabbing and recycling after bearing assembly. A fast and lightweight finished bearing grab robot is developed and designed, and it has a lightweight and flexible robotic mechanism. Based on the physical characteristics and objective indicators of the grasping object, carries out lightweight structural design of the manipulator and completes the modular design of important joints, parts, and connection components.
Performance Characterization of Composite Powders for 3D Printing
Authors: Bi Xiangjun , Zhao Hongjie , Gong Yuanxun , Zhou Xinghong 
Published: April 2021

Abstract
In order to meet the requirements of wave-absorbing and stealthy functions, it is necessary to develop high performance absorbing structures and special materials. This paper introduces the performance characterization of the powder mixed with acetylene black and nylon. It characterizes the mixed state, rheological property and the thermal conductivity of the material using optical microscope and rheometer, and thermal analyzer. The experimental results show that when the content is 5% and 7%, the result is the higher melt index, the significantly reduced specific heat capacity and the small printing process window. And the SEM images of the printed parts also show relatively loose structures. Therefore, it is recommended that the content of acetylene black composite powder should not exceed 5%.
Preparation of New Polymer Nanocomposites and Analysis of Their Superhydrophobic Properties
Authors: Wang Wei 
Published: April 2021

Abstract
As an important branch of the superhydrophobic research field, polymer/nano composite superhydrophobic materials have broad application prospects in anticorrosion, self-cleaning and oil-water separation. In this paper, a polymer-based nanocomposite superhydrophobic coating was prepared by a simple method, and its microscopic morphology, wettability and other related properties were characterized and analyzed. The SiO2/PS and SiO2/PVC superhydrophobic nanocomposite coatings were prepared by spin coating. The method is simple, easy to implement, low in cost, and does not require special equipment and harsh conditions. The addition of hydrophobic nano-silica reduces the surface energy of the coating while increasing the surface roughness, without the use of low surface energy substances. The coating exhibits excellent acid and alkali corrosion resistance, and is suitable for a variety of substrates. It can be used as an anticorrosive coating for metal protection and has a good application prospect.
Design and Experiment of Dross Scooping Robot for Slag Scouring of Aluminum Ingot
Authors: Zhang Xing , Wang Song , Li Xingyou , Wang Fuqing 
Published: April 2021

Abstract
In the metallurgical casting industry, the dross removing process is the most critical process that affects the casting quality of aluminum ingots. At present, the dross removing operation is mainly done manually. In order to reduce the labor intensity of workers, researchers at home and abroad have designed a variety of dross-removing robots to replace manual labor to realize automated dross-removing operations. However, the dross removing robots currently on the market all have problems such as unsatisfactory dross removing effect, poor working stability, and unclean slag removal. In order to solve the above problems, this article starts from practical applications, based on functional design and safety design, through the structural design of the slag scraper, the experimental analysis of applied materials and the optimal design of the robot trajectory, a set of The dross picking shovel is required by industrial applications. Finally, the practicality of the dross removing robot verifies the practicality of the designed dross shovel, which is an important step for the intelligent development of the entire metallurgical casting industry.
Memory characteristics of room-temperature multiferroic hexaferrite Sr3Co2Fe24O41
Authors: Wu Chongsheng , Liu Qian , Qi Binghao , Zhang Huaiwu , Liu Yingli , Harris Vincent G. 
Published: April 2021

Abstract
We prepared the room-temperature magnetoelectric hexaferrite polycrystal Sr3Co2Fe24O41 by the conventional solid-state reaction, the maximum magnetoelectric current of |J| = 8.8 μA/m2 was obtained at about μ0H = 12.9 mT. Furthermore, We obtained a stronger magnetoelectric effect when the remnant magnetization direction was the same with the scanning field than in contrast. The most important, we have demonstrated a type of room-temperature nonvolatile memory based on this characteristic. The magnetoelectric current |J| is employed to store binary information. By applying positive and negative magnetic field pulses, |J| achieved repeatable nonvolatile switching between high and low states. Our work enriched the magnetoelectric effect of multiferroic hexaferrites and provided a new idea to implement next-generation nonvolatile information memory devices.
Structure Optimization and Sealing Performance of Double Corrugated Self-Sealing Composite Gasket
Authors: Tan Wei , Xu Jinya , Zhou Xin , Deng Wenfei , Yu Xiaoming , Zhang Bin , Wang Xiao , Zhang Chun 
Published: April 2021

Abstract
A self-sealing nickel-titanium (NiTi) alloy double corrugated composite gasket was designed. The number of corrugation (5-7), the amplitude of corrugated (0.2-0.4 mm), the thickness of corrugated skeleton (0.5-1.0mm) and the seam width (0.2-0.4 mm) of the composite gasket were selected to design a four-factor and three-level experimental scheme by orthogonal experimental method. The ANSYS finite element software was used to study its compression resilience and sealing performance. The statistica software was used to process the data by multi-factor analysis of variance. The results showed that the corrugated number was the most significant factor affecting the resilience rate, and the slot width was the most significant factor affecting the compression rate. The optimal scheme for the resilience performance was obtained. The sealing performances of self-sealing composite gasket and common corrugated composite gasket were compared. The results showed that self-sealing composite gasket had better sealing performance.
Synthesis and Characterization of O-Diphenol Triazine Microporous Polymer
Authors: Zhou Zhicun , Lu Dunxia , Feng Yongxin , Dong Liming 
Published: April 2021

Abstract
A novel O-Diphenol Triazine Microporous Polymer was successfully synthesized by the one-step Friedel-Crafts reaction of cyanuric chloride and 1,2-Dihydroxybenzene(catechol) in the presence of dichloromethane and anhydrous AlCl3 as solvents and catalyst, respectively. The polymer was characterized by FTIR, 13C CP/MAS NMR, XDR and TGA. The study found that the polymer is an amorphous structure containing trace amounts of quinines. The polymer has good thermal stability, and the 5% weight loss temperature is 260 °C under nitrogen conditions. The surface area of the polymer is 154.08 m2/g, the pore diameter is 5.55 nm and its distribution is mainly in the mesoporous region by adsorption-desorption of N2 at 77 K.
Preparation and Optical Properties of Cr3+ Doped CaAlBO4 Red Phosphor
Authors: Wen Yan , Li Zhisen , Chen Dai , Man Shiqing 
Published: April 2021

Abstract
Calcium acuminate matrix (CaAlBO4) was prepared at temperatures 1160°C by soild state reaction, a spectroscopy analysis of Cr3+ doped CaAlBO4 based on excitation spectrum and emission spectra was performed. Broad band excitation spectra are observed with 414 nm and 553 nm. respectively owing to the 4A2→4T1 and 4A2→4T2 transition of Cr3+ ion, and emission spectra with the strongest emission peak 694 nm owing to the 2E2→4A2 transition of Cr3+ ion. Also, the influences of the concentration of Cr3+ ion on the luminescent properties in CaAlBO4 compounds were investigated, which the optimal concentration is 0.5mol%.
Experimental study on smart concrete based on resistivity and damage monitoring
Authors: Fan Xuefeng , Shang Jianguo , Zu Jinlong , Chen Yuhong 
Published: April 2021

Abstract
This paper investigates the correlation between strain and the electrical resistivity of smart concrete. During applying an axial compression load to the smart concrete, the electrical resistivity and the ultrasonic velocity penetrating the samples are collected. According to the piezoresistive characteristic, the damage index of the smart concrete can be determined with the electrical resistivity and the ultrasonic velocity. Eventually, it concludes that the smart concrete is more suitable to measure the damage of a concrete structure
Recent developments of nanotechnology in tissue adhesives
Authors: Yang Qihua 
Published: April 2021

Abstract
The high incidence of wounds coinciding with the current limitations of available treatments have established a high demand for novel and innovative approaches for wound healing. As a result, tissue adhesives, a promising substitute for traditional wound healing procedures, have lately gained great interest in clinical use. As most of the tissue adhesives are hydrogel-based, however, their behavior is severely weakened by the fragility of hydrogel. Recently, researchers have investigated the potential usages of nanoparticles (NPs) as promising candidates for addressing wound treatment and have managed to discover remarkable, enhanced nanotechnology-based adhesive hydrogels. In this review article, our chief focus is highlighting the latest advances in the usage of nanotechnology in tissue adhesives. In particular, we emphasize two fields in which nanotechnology is employed: the possibility to enhance the mechanical and biochemical properties of tissue adhesives as well as the new functions enabled by NPs, including regenerative ability and accelerated wound healing. We also explore unmet demands and potential future research directions of current technologies, while discussing promising strategies to promote wound-healing procedures.
Fabrication and Photocatalytic Properties of Bi2O3/SiO2 Electrospun Nanofiber Membranes: Implication for Wastewater Degradation
Authors: Wang Hongmian , Chen Jiawei , Wu Jiahao , Feng Ying , Guan Jiankang , Dou Yongshen , Liu Sanmao , Tu Shunheng , Li Yongfeng 
Published: April 2021

Abstract
The Bi2O3 nanostructures with narrow band gap and strong photoresponse to visible light were used to couple with SiO2 by electrospinning method, to prepare Bi2O3/SiO2 nanofiber membranes. Compared to pure Bi2O3 powder, the as-prepared photocatalytic membrane is more convenient to recycle. Moreover, Bi2O3 active components are evenly dispersed on the SiO2 fiber membrane by electrostatic spinning. Furthermore, the Bi2O3/SiO2 electrospun nanofiber membrane calcined at 340°C can maintain a high purification rate of 84% in the test.
Simulation Research on Heat Dissipation of the Inner Tank of Household Electric Cooker Based on Fluent
Authors: Yang Chenglong , Li Jiacheng , Cao Jiamin 
Published: April 2021

Abstract
Aiming at the problem of heat loss from the inner pot of the rice cooker, based on theoretical analysis and CFD simulation technology, this paper establishes a three-dimensional model of the inner pot of the rice cooker, uses the SCDM model analysis in Fluent, and performs grid division and fluid calculations. Adding a reflection layer and a vacuum insulation layer to the outer wall of the inner tank can effectively reduce the heat dissipation of the inner tank, which provides an important reference for the improvement of household rice cookers.
Integrated control technology of photovoltaic reactive power with source network coordination based on Multi-Agent Technology
Authors: Li Zhe , Tang Chenghong , Liu Cheng , Chen Yonghua 
Published: April 2021

Abstract
With the rapid development of photovoltaic power generation technology, its participation in reactive power control of distribution network technology has been widely concerned. However, photovoltaic output has great volatility and randomness, which also brings challenges to the security and stability of distribution network reactive power regulation. Firstly, considering the topology of photovoltaic power generation unit and the demand response of the grid point, the reactive power model of distribution network including photovoltaic power generation is established based on source grid coordinated regulation. Then, on the basis of the above research, a source-grid cooperative photovoltaic reactive power double-layer regulation model was established. These include the upper-level control model responding to grid reactive power control demand, and the lower-level control model uses particle swarm optimization algorithms to allocate and control the upper-level demand for each photovoltaic power generation unit. Finally, based on IEEE33 distribution network model, it is verified that the proposed method can effectively solve the impact of photovoltaic output fluctuation on reactive power regulation and control of distribution network.
High-power RTG simulation prototype based on skutterudite
Authors: Wu Chunyu , Liu Yang , Ma Dong , Li Yang , Yang Shuaifei , Zhao Jiawei , Jin Yang , Liu Shichao 
Published: April 2021

Abstract
In this paper, a simulation prototype of a high-power radioisotope thermoelectric generator (RTG) simulation prototype based on skutterudite is designed. By replacing the isotope heat source with an electrically heated heat source, its output power is 40 W under the condition of 1600 W electric power heating, and the thermoelectric conversion efficiency can reach 2.5%. The simulation prototype contains a total of 8 thermoelectric modules, and each module contains 16 pairs of thermoelectric materials. Its maximum theoretical output power can reach 66 W under the temperature of 550 °C. This research provides a leading guide and reference point for the temperature difference structure of RTGs at the hundred watt level.
Impact Analysis of Increased Penetration of Variable Speed Constant Frequency Wind Power Generation on Power System Stability
Authors: Zhu Xuecheng , Zhang Jian , Chen Shiyu , Li Lin 
Published: April 2021

AbstractWind energy has the characteristics of randomness and intermittency. The simulation of the dynamic process on the medium and long-term time scale caused by this is of great significance to the planning and operation of power systems containing wind power. The paper discusses the operating principle of AC-excited variable-speed constant-frequency wind power generation system, analyzes the operating characteristics and control objectives of doubly-fed asynchronous wind generators before and after grid connection, and studies the grid connection of generators based on stator flux-oriented vector control technology Control and tracking control of maximum wind energy. The simulation analysis of the fault disturbance process of the power grid system with variable speed and constant frequency wind turbines, the results verify the correctness of the modeling.
Research on Data Management of Power Grid Enterprises Based on Data Middle Platform
Authors: Yang Qifan , Cai Yuxiang , Shen Liang , Chen Xiangzhou , Lan Liang , Jiang Xin 
Published: April 2021

Abstract
At present, the construction process of power grid enterprise information system mainly adopts the “vertical integration” system structure, with high construction cost, long period, non-sharing of data and low quality. By introducing the concept of data middle platform.to reaggregate and reconstruct unified supervision of enterprise data, it provides accurate and reliable, shareable and reusable data application services with business logic for front-end business, and realizes intelligent interconnection and data sharing in all aspects of power system. This paper puts forward the idea of data center, and puts forward data management methods from master data, data warehouse and metadata management respectively, so as to provide data service support for the development of power grid business towards intelligent and efficient direction.
Research and Design of Open Convolutional Neural Network Based on FPGA
Authors: Lin Huining , Wang Yu , Zhou Jian , Pei Shengqing , Geng Zhiqiang , Chen Zhuang , Guo Zhihan 
Published: April 2021

Abstract
In this paper, using the fluidity and parallelism of FPGA, we design a set of memory scheduling mechanism to implement an open convolutional neural network. The self-built vehicle database and the cropped and zoomed Daimler Pedestrian Detection Benchmark dataset are each trained under different network structures, and their recognition rates reached 97.8% and 98.6%. An open feedforward network is implemented on the FPGA platform, and experiments show that for small convolutional networks with different structures, the FPGA platform can increase its recognition speed when resources permit.
Failure analysis of heat pipe in hydrogen production unit
Authors: You Yiliang , Lin Nan 
Published: April 2021

Abstract
After two months of service, the heat pipe of hydrogen production unit bulged and fractured. The observation and measurement of the deformation of the pipeline was performed. The failure mode of heat pipe was analyzed by observing the macro and micro morphology of the fracture surface, and by Energy Dispersion Spectrum (EDS) analysis. Through the analysis of the metallographic structure of the pipeline, it is found that the pearlite is seriously spheroidized, which indicates that the pipeline has failed under long-term overheating working condition.
Research on Control Strategy of Grid-side Converter of Permanent Magnet Direct-drive Wind Turbine
Authors: Xu Hao 
Published: April 2021

Abstract
In order to make the permanent magnet direct-drive wind turbines stable and grid-connected operation, a double closed-loop control strategy based on grid voltage-oriented vector and current decoupling is proposed. First, the topology of the grid-side converter of the wind turbine is determined, then the mathematical model of the control strategy is derived, and the parameters of the PI regulator are calculated. Finally, the control strategy is verified by the simulation results. Through the analysis of the experimental results, it is found that the control strategy can achieve the functions of stabilizing the DC bus voltage of the fan and controlling the input power factor, ensuring the stable operation of the fan.
Measurement on minimum ignition energy of n-decane with pyrolysis
Authors: Peng Wenrui , Lin Bingxuan , Sheng Jiaming 
Published: April 2021

Abstract
Measurement on the minimum ignition energy (MIE) of n-decane with pyrolysis is investigated experimentally. Certain decomposition rate n-decane vapor is simulated by blending certain proportion of ethylene into n-decane vapor. Two equivalence ratios (1 and 0.7) and five blending ratios (0,0.2 0.4,0.6,0.7) of ethylene are, respectively, designed to represent different decomposition rates and equivalence ratios. The effect of different decomposition rates and equivalence ratios on the MIE of n-decane is investigated in following experiments. Two experimental methods are used for measurement. Technique of high-speed schlieren system is adopted to obtain images of the flame kernel by which the relationship between flame kernel radius and flame speed is calculated. An ignition probability model based on the logic regression theory is established to obtain the ignition probability curve. Results indicate that MIE is sensitive to the blending ratio of ethylene when equivalence ratio is 0.7. With elevated blending ratio of ethylene, MIE decreases rapidly firstly and with the continuous increasing of the blending ratio, the decreasing of MIE is lagging which indicates that there is a limit to the effect of the blending ratio of ethylene on the MIE. It is also found that values of MIE are closed when ethylene blending ratio is big enough whatever the equivalence ratio is.
Research on the development path of logistics management innovation in e-commerce environment
Authors: Wu Guanghua 
Published: April 2021

Abstract
The rise of e-commerce has caused changes in the development of logistics management, which is both an opportunity and a challenge for the logistics industry. This paper first describes the current problems faced by logistics management innovation, and then describes the characteristics of logistics development in the ecommerce environment, and then puts forward specific countermeasures for the innovation and development of logistics management under the e-commerce environment. Finally, the conclusion is drawn: with the development of e-commerce, the logistics industry will also keep pace with the pace and make substantive breakthrough under the management innovation.
Research on Financial Management Countermeasures of enterprises in e-commerce environment
Authors: Wang Linghong 
Published: April 2021

Abstract
With the continuous development of domestic economy and the development of science and technology, e-commerce has been more and more widely used in enterprise financial management. The involvement of e-commerce has brought the space of innovation and change for enterprises. At the same time, enterprises need to take some improvement measures to adapt to the new requirements of e-commerce environment. This paper takes the new requirements of e-commerce environment for enterprise financial management as the starting point, and then briefly describes the existing problems and corresponding improvement measures of enterprise financial management under the current environment, aiming to help readers fully understand the connotation of e-commerce environment and how to adapt to enterprise financial management, and improve the relevant measures for enterprise staff for ideas.