bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of 5G Communication Technology in Power Communication and Research on Key Technologies
Authors: Chen Guohui , Wei Hongliang , Zhang Yizhu , Guo Chao , Shi Shuo , Wang Zhipeng , Yan Tianji , Ma Siqian 
Published: June 2021

Abstract
With the rapid development of power system and the deepening construction of smart grid, 5G communication technology is favored by all walks of life because of its ultra-low delay, ultra-high reliability, deep coverage, extreme capacity and ultra-low power consumption. It has become the key technology to lead scientific and technological innovation and promote the sustainable development of power system, providing a solid guarantee for the realization of human-computer interaction and Internet of Everything. This paper first introduces the network structure, basic principle and core features of 5G communication, and expounds the core slice of 5G communication and its three application scenarios; secondly, the potential demand scenarios of 5G communication in power system are analyzed in depth, that is, high capacity, high bandwidth and low delay business scenarios; finally, the key technologies of 5G communication, such as large-scale MIMO communication technology, ultra-dense heterogeneous network technology, green communication technology and millimeter wave communication technology, are discussed, and the linkage between current communication requirements and communication technologies is studied, which provides theoretical support for the application of 5G communication in power system.
Synthesis of polyethylene/bismuth molybdate and its photocatalytic properties
Authors: Hu Yu , Cao Mengmeng , Ding Peimei , Hu Wei , Lin Ruihua , Song Lianxiang 
Published: June 2021

Abstract
Bismuth molybdate (Bi2MoOe) was synthesised by utilizing Bi(NO3)3’5H2O and (NH4)eMo7O24’4H2O through hydrothermal method. Bi2MoOe was loaded on polyethylene (PE) to prepare the film with photocatalytic properties. The product was characterised by XRD and UV DRS spectra and investigated photocatalytic degradation of sulfanilamide under solar light. The results confirmed a photocatalytic efficiency of 66%.
Determination Method of Contact Ablation Degree of Circuit Breaker in Power System Based on Radiated Electromagnetic Wave Detection
Authors: Zhao Xiao Bing , Wang Chao , Man Xiao Ping , Yu Bo , Piao Yong Xin , Yang Jie , Ding Yu 
Published: June 2021

Abstract
Power is the most important energy in the current society, so it is very important to ensure the stable operation of the power system. In order to determine the state of the circuit breaker in the power system effectively, the power supply is stable. This paper presents a method to determine the ablation degree of the contact of the circuit breaker based on the radiation electromagnetic wave detection. The method adopts the means of electrical measurement and waveform observation to realize the rapid diagnosis of the contact ablation degree of the circuit breaker. The antenna is used to receive the radiated electromagnetic wave generated in the opening process of the circuit breaker, and the common oscilloscope is used to monitor the waveform. The number of electromagnetic wave pulses per unit time is analyzed to determine the ablation degree of the circuit breaker contact. If the number of pulses found by oscilloscope is large, it can be judged that the contact ablation is serious. The method mentioned in this paper belongs to the field of electrical engineering, which is mainly used to determine the ablation degree of the contact of the circuit breaker by means of electrical detection. This method has the advantages of simplicity, rapidity and efficiency.
Prediction of Comprehensive Water Cut in Periodic Waterflood Reservoir Based on Variable Weight Combination Model
Authors: LIU Quyang , LIU Xiaodong , Hao Dong , XUE Qiang 
Published: June 2021

Abstract
The comprehensive water cut of periodic waterflood reservoirs is random and volatile, and it is a non-stationary time series. In order to solve the problems of poor prediction results of conventional methods or heavy workload and long time-consuming in reservoir numerical simulation, an EMD-LSTM neural network model and a smoothing spline regression (Smoothing Spline) variable weight combined prediction model are proposed. This method introduces empirical mode decomposition (EMD) to process non-stationary and non-linear data, and combines the advantages of machine learning and curve regression to improve the prediction accuracy of the model. The variable weight combination model is used to predict the water content of the periodic water injection reservoir. The results show that the prediction accuracy of the variable weight combination model is significantly higher than that of the single model. The variable weight combination model can reduce the prediction error and can effectively and accurately predict the periodic water injection oil. The comprehensive water content of the reservoir can guide the adjustment of water injection parameters for periodic water injection reservoirs.
Foreign Object Detection of Electric Transmission Line with Dynamic Federated Learning
Authors: Haotian Sui , Tong Li , Pu Wang , Liang Xu , Hongwei Zhao 
Published: June 2021

Abstract
The bird’s nests and other foreign objects on the transmission lines bring about huge threats to the electric power security. The aggregation of foreign objects data of different regions can boost the generalization of foreign objects with deep learning. However, due to policy constraints and other data security reasons, it is impossible to collect the data of different power companies to train a joint foreign object detection model. Therefore a dynamic federated learning based foreign object detection method for transmission lines is proposed. For the clients distributed in power companies, each model is trained and uploaded to the central server in an asynchronous way for dynamic fusion. For the model trained with pre-trained model, the pre-trained part is frozen and will not be trained. Thus the feature extraction backbone is not uploaded to central sever, which contributes to the decrease of the communication consumption by reducing the amount of uploaded data. The experimental results demonstrate that the dynamic federated learning based foreign object detection algorithm can maintain the same accuracy level compared with centralized training. It can train the joint model without uploading the original data of the edge nodes, which guarantees the security and privacy of local data. Compared with training individually, it has great improvement in accuracy. And it is also applicable with different network sizes. Therefore the dynamic federated learning based foreign object detection has strong privacy, accuracy, efficiency, flexibility and scalability.
Energy consumption forecast of different industries under the social and economic transformation
Authors: Su Yun , Tian Yingjie 
Published: June 2021

Abstract
With the development of Shanghai’s social economy and the continuous transformation of the three major industries, Shanghai’s energy structure will also undergo corresponding changes. In order to study the proportion of electricity in energy consumption in the future, this paper predicts the consumption of electric energy and non-electric energy in Shanghai based on the Vector Error Correction Model (VECM), and analyses impulse response analysis and variance. The result of the experiment shows that development of Shanghai’s energy consumption structure will still keep in low carbon and electrification trend. From the perspective of the terminal energy consumption structure, the growth rate of power consumption will exceed the non-electric energy consumption one, and the proportion of electrification will be further increased.
Study on the characteristics of land use structure of key ecological public welfare forest areas in Fujian Province
Authors: Fan Xuncheng , Zhao Lili 
Published: June 2021

Abstract
Based on five-phase remote sensing image data, RS and GIS technologies were used to quantitatively analyze the quantity, rate and structure of land use changess in Shunchang county, Fujian Province, using the relevant calculation model of land use. The results showed that the land use types were frequently converted to each other between 1995 and 2015 in Shunchang county, among which forestland and cultivated land became the land with the most increase and decrease in area, respectively. In terms of the rate of change, the single dynamic degree of forestland, water area and unused land are all positive, among which, water area has the fastest rate of change with a dynamic degree of 9.57%. Grassland, cultivated land and construction land all have negative values, and cultivated land has the fastest rate of decrease. In terms of land use structure, both land development index and reclamation index show different degrees of decreasing trend. This study can provide scientific reference for the rational planning and utilization of land in Shunchang county and the surrounding counties.
Research on the integration of flue gas desulfurization and dust removal in oil shale refining
Authors: Xiaochuan Deng , Fengchang Sun , Dongyang Yu , Jiahua Wu , Zhichao Zhang , Zheng Wang 
Published: June 2021

Abstract
The flue gas of oil shale retort is characterized by high humidity, low sulfur content and tar content, which makes it impossible for traditional flue gas desulfurization facilities to deal with such flue gas normally. By collecting flue gas parameters at the inlet and outlet of the original desulfurization tower of oil shale dry distillation flue gas, and combining with computational fluid dynamics numerical simulation, this paper analyzes the fault reasons of each step in the process of desulfurization of oil shale dry distillation flue gas. Through experimental study, the flocculation characteristics of suspended solids and petroleum substances in desulfurization circulating liquid were analyzed. The results show that the low concentration of Na2CO3, Ca(HO)2, CaO desulfurizer can promote the flocculation, Ca(HO)2, CaO desulfurizer is beneficial to the removal of petroleum substances. The original wet limestone-gypsum desulfurization system was transformed into the wet sodium carbonate desulfurization and dust removal integrated system. The method of flocculation and sedimentation is used to remove sludge and petroleum substances, which can ensure the normal operation of the system and the emission of flue gas up to the standard.
A green synthesis method-nitrile hydration to synthesize amide
Authors: Guo Yue , Chi Yingnan 
Published: June 2021

Abstract
Amide compounds which are closely related to people’s clothing, food, shelter, and transportation play an important role in people’s daily production and life. Therefore, exploring and improving the synthesis of amide compounds is one of the topics that researchers have focused on in recent years. The hydration of nitriles to amides is an environmental-friendly and 100% atom economic method. Among the reported nitrile hydration catalytic systems, metal complexes have attracted considerable attention due to their high catalytic activity, excellent selectivity, mild reaction conditions, and tunability of catalytic performance at a molecular level. In this paper, we summarize the recent progress in the synthesis of metal complex catalysts and understanding of the catalytic mechanism, which provides a basis for the industrialization of metal complex catalysts.
Modelling tree height-diameter relationship of Quercus acutissima in a coniferous and broad-leaved mixed forest in Mount Tai, China
Authors: Hao Ming , Zhao Xiyue , Wang Qian , Wang Peng , Ni Ruiqiang , Lu Fadian 
Published: June 2021

Abstract
The aim of this study was to establish the relationships between height and diameter (DBH) of Quercus acutissima in a broadleaved-conifer mixed forests in Mountain Tai in China. Based on the data of Q. acutissima from a 0.6 hm2 permanent forest plot, the relationships between height and DBH were simulated with six empirical models, including Linear, Power, Chapman-Richards, Logistic, Korf and Weibull models, to select the optimization model. There is no significant difference in the predictive power of each growth model. The fitting and test results of each model in this study show that these six model forms have good prediction effects. The results showed that the logistic fitting effect is the best model for Q. acutissima. The Logistic model can be applied to the simulation of tree height and diameter of coniferous and broad-leaved mixed forests in this area.
Analysis and Research on the Pollution of Lakes in Beijing
Authors: pengfei Zhang , xiaoyu Cui , yunxia Gao , qingfei Cui 
Published: June 2021

Abstract
This article analyzes the pollution status of 22 key lakes in Beijing in the past 10 years. The results show that from 2010 to 2014, the proportion of lakes in Beijing’s Class II water bodies was 17.4%, and the average proportion of lakes in Class III water bodies from 2015 to 2020 was 29.2%; the decline in the proportion of Class V water bodies from 2016 to 2020 was more obvious. Water bodies inferior to Class V have been basically eliminated, but in 2019, many lakes have been in a state of moderate eutrophication. At the same time, the analysis during the year showed that the proportion of Type II water bodies was low from June to September, the lowest value was 11.7% in August, and the proportion was relatively high in February and March, and the highest value was 40.5% in March; In August, the proportions of Category IV and V water bodies reached the highest values of 33% and 24% respectively, which is related to the increase in summer water temperature and the shortage of water resources that can supply lakes. The research results are expected to provide support for the improvement of urban lake water environment.
Remediation of As and Cd contaminations by composite material additives in smelting site soil
Authors: Hu Xuewu , Zhong Juan , Liu Xingyu , Cui Xinglan , Zhang Mingjiang , Lv Ying , Ma Daozhi , Yan Xiao 
Published: June 2021

Abstract
Arsenic (As) and cadmium (Cd) in soil is a serious environmental issue. Exploring an efficient method for simultaneous immobilization of As and Cd in soils is of great significance. In this study, three types of composite material additives were selected to test their ability to immobilization of As and Cd simultaneously in soil of smelting site through leaching toxicity. Results showed that Fe-based composite material additives (SD) significantly reduced concentrations of As and Cd in solutions from SD1 and SD2 treated soils, signifying that certain Fe-based composite material potentially immobilization heavy metals in soil. While Ca-Mg-Si based composite material additives (C) and Si-Mg-Al based composite material additives (S) have a side effect in As immobilization. The conclusions were that Fe-based composite material may be used as effective in situ amendments to immobilization As and Cd simultaneously in soils.
Land Urbanization Quality in China: Evaluation and Spatial-temporal Variability
Authors: Lu Na , Liu Zhirong , Yu Huachen , Wang Miao 
Published: June 2021

Abstract
Based on the construction of an evaluation index system for land urbanization quality, this paper evaluates and analyzes the variability of spatial-temporal in land urbanization quality during 2005-2015 in China. Results shows that: (1) Among the three aspects of land urbanization quality, sustainable development capacity scores the highest, land urbanization development quality follows, land-population coordinated development is the lowest. (2) The quality of land urbanization in China is generally improving, and the spatial distribution has a “gradient difference”, showing a pattern of high east and low west. In conclusion, to improve the quality of land urbanization, all aspects should be considered comprehensively; each region should combine its own conditions to formulate strategies for improving the quality of land urbanization.
The Enlightenment on Emergency Management of Chemical Parks
Authors: An Ziliang , Wang Ning , Bai Dingsong , Yu Xintong , Liu Shaofeng 
Published: June 2021

Abstract
Under the trend of large-scale industrial production, the construction of chemical parks is booming. With the hot topic in the field of safety accidents in chemical parks, the public awareness of emergency management has increased remarkably. In response to the current fragmentation dilemma of chemical industry in China, it is necessary to improve the emergency management mechanism. In the paper, four evaluation strategies are proposed on the basis of existing research for the construction of emergency management system in China Chemical Industry Park.
International experience of garden waste recycling and its inspiration to China
Authors: Wenting Cai , Yan Chen , Kai Fu , Li Zhang , Yu Wang , Xiangchun Wang 
Published: June 2021

Abstract
The amount of garden waste produced in China is on the increase annually, but its recycling treatment attracts little attention, so that the recycling treatment rate stays low, which has gradually become an important issue that cannot be ignored for urban management. In order to better promote the treatment and re-utilization of garden waste in China, preserve resources, and achieve the sustainable development of urban ecology, a review is conducted in this paper on the experience of those advanced countries such as the United States, Japan and others in the policy-making, financial support and other practices of garden waste recycling, so as to provide the basis and reference required for the scientific, sustainable and reasonable practice of garden waste treatment and re-utilization in China.
Analysis and Optimization of Station Taxi Transfer Efficiency Based on Queuing Theory
Authors: Sun Sen 
Published: June 2021

Abstract
Nowadays, the pace of life is accelerating, and people are paying great attention to the efficiency and quality of travel. This article uses some unreasonable phenomena in the station taxi transfer area to study the relevant knowledge of queuing theory to establish the taxi transfer efficiency of the city’s external transportation hub Optimize the model, take transfer waiting time and operating cost as evaluation indicators, and verify with examples. The results show that the optimization model is feasible, and the queuing time and the total cost per unit time under the optimization scheme are significantly reduced, which improves the efficiency of passengers changing taxis. Finally, it evaluates the optimization results proposed above.
Study on Electrocatalytic Oxidation Technology of Domestic Sewage
Authors: Liu Sufei , Wang Juan , Li Ruozheng , Tian Ying , Teng Jilin , Li Zhengkun , Zhu Xia 
Published: June 2021

Abstract
Domestic sewage is treated by grapheme-based electrocatalytic oxidation process when adding salt or not. The results show that the removal rate of ammonia nitrogen and COD are 97.86% and 64.29% separately under the conditions of 1g/L salt, 4min residence time and 500A/m2 current density. The COD and ammonia nitrogen of produced water are 72.5mg/L and 1.35mg/L respectively which meet the comprehensive wastewater discharge standard of GB8978–1996, while the removal rate of ammonia nitrogen and COD are 97.22% and 74.55% separately under the conditions of 20 min residence time and 190A/m2 highest current density without adding any salt. The COD and ammonia nitrogen of production water are 57mg/L and 1.7mg/L respectively which meet the comprehensive wastewater discharge standard of GB8978–1996 too. In the experiment, about 95.11 % ~ 97.27 % of ammonia nitrogen is converted into nitrogen. The cleaning effects of the deposition by using hydrochloric acid and citric acid are investigated. The results show that the deposition can be cleaned by both of the 2% hydrochloric acid and 2% citric acid, but the immersion cleaning rate of citric acid which has residual left is slower than hydrochloric acid. The deposition can be thoroughly cleaned by cycle operation.
Effects of an invasive plant Palmer Amaranth (Amaranthus palmeri) on herb communities
Authors: Yi-ming LI , Xun-qiang MO , Qian-nan LI , Chen-huan Liang , Si-min Liu , Ya-wen Zhang , Zheng Zhang 
Published: June 2021

Abstract
Based on the investigation of vegetation samples in the university town of Xiqing District, Tianjin, this paper summarized the status of biological invasion of Amaranthus palmeri in Tianjin, and searched for the methods to suppress the biological invasion of Amaranthus palmeri, which laid a foundation for the study on the solution measures for plant invasion of Amaranthus palmeri in China.
Influence of contact area coefficient on the results of u-p formation dynamic equations of fluid-saturated porous media
Authors: Feng Chaoqun , Zhang Pei , Xu Chengshun , Du Xiuli , Yue Chong 
Published: June 2021

Abstract
The principle of effective stress is the keystone of modern physics, which becomes the basic difference between soil mechanics and general solid mechanics. Terzaghi’s effective stress principle has been controversial since it was put forward, especially for the calculation of effective stress, many scholars have revised it from different aspects. The pore pressure is reduced in all different modified formulas, that is, the pore pressure need to be multiplied by a pore pressure factor. However, the variation of pore pressure factor has always been ignored because the reduction of pore pressure is very small. In this paper, the effective stress expression considering the contact area coefficient is modified to the u-p formation dynamic equation, and the influence of the change of contact area coefficient on the dynamic characteristics of soil is studied.
Application of green-synthesized cerium oxide nanoparticles to treat spinal cord injury and cytotoxicity evaluation on paediatric leukaemia cells
Authors: Yiling Wu , Murakonda Gopi Krishna , Jarubula Ramu 
Published: June 2021

Abstract
Injury prognosis, and treatment are one of the major objectives of nursing care during the treatment of spinal cord injury (SCI). Here, we developed a novel, biocompatible Cerium oxide nanoparticles (CeO2-NPs) through biosynthetic approach that can be used for the treatment of spinal cord injury in nursing care. CeO2-NPs were green fabricated utilizing leaf extract of Azadirachta indica. The fabricated nanoparticles still maintained the cubic-structure that was revealed by the x-ray diffraction (X-RD) analysis. Transmission electron microscopy (TEM) images displayed the sphere shape of nanoparticles having 15 nm particle size. The stretching bands of Ce–O bond were noticed at 457 cm−1 and 451 cm−1 from the Raman and Fourier-transform Infrared (FT-IR) spectra, correspondingly. On the other side, biological investigations demonstrated that the single dose application of CeO2-NPs at nanomolar concentration is regenerative, bio-compatible and offers a considerable neuro-protective effect on the neurons in spinal-cord of an adult rat. Neuronal function retention is showed in electro-physiological (electrography) recordings and plausibility of its uses in preventing ischemic-insult is revealed from the assay of oxidative injury. This work explored the possibility of usage of prepared CeO2-NPs for SCI treatment. Furthermore, examination of green fabricated CeO2-NPs on paediatric leukaemia (CCRF-SB) cells were found to potentiate cytotoxicity indicating their therapeutic potential for future treatment of paediatric cancer. On the other hand, the current study also highlights the potential effect of CeO2-NPs on treatment of SCI through nano-based therapy.