bluuebunny/crossref_metadata_2025_split huggingface dataset:
The zonal North Pacific Oscillation: a high-impact atmospheric teleconnection pattern influencing the North Pacific and North America
Authors: Zhuge Anran , Tan Benkui 
Published: May 2021

Abstract
Based on unfiltered daily Japanese 55 year reanalysis covering the 60 winters in 1958–2018, a new teleconnection pattern called the zonal North Pacific Oscillation (ZNPO) pattern has been detected. The ZNPO pattern describes a mass oscillation in the troposphere between the eastern and western North Pacific, persisting for a week or so. It is shown that the ZNPO pattern is a high-impact teleconnection pattern that brings the wintertime North Pacific and North America severe weather and hydroclimate events. It may cause rapid surface air temperature drop or rise over the northern North Pacific and North America, remarkable sea ice concentration anomalies over the northeastern Bering Sea, and strong convective anomalies in the lower troposphere over the eastern and western midlatitude North Pacific. The ZNPO pattern arises from two westward-moving geopotential height disturbances over the North Pacific and North America and is driven mainly by baroclinic energy conversion and feedback forcing by transient eddies. The baroclinic energy conversion acts to overcome the available potential energy (APE) loss caused by the heat flux of transient eddies and at the same time acts as a major kinetic energy (KE) source to maintain the ZNPO pattern. The barotropic feedback forcing by transient eddies acts as a major KE source to drive the ZNPO pattern during the growing stage of the ZNPO pattern and as a major KE sink to heavily damp the ZNPO pattern during the decaying stage.
Construction and application of spatiotemporal information infrastructure and service standard system
Authors: Zheng Ying , Fu Qiang 
Published: May 2021

Abstract
Based on the current application of geospatial technology in China, this paper constructs the hierarchical structure and category definition of the framework of spatiotemporal information infrastructure and service standard system according to the actual requirements of spatiotemporal information infrastructure and service standards, and expounds its future application and development trend. In order to provide reference for the future development of spatiotemporal information industry.
Analysis and Excavation of the Design Concept of Special Sea Atlas
Authors: Yu Caixia , Lu Yan , Lin Haifeng , Luan Jun , Li Shujun 
Published: May 2021

Abstract
Atlas design is a creative mental processing, with few fixed ideas and patterns to follows. Taking“XXX Company’s Global Maritime Trade Achievements” as an example, this paper explores and mines the formation of design concept as well as the complementation process of design scheme of the special marine atlas, which can provide reference for the design of the special sea atlas latter.
Forecasting Earthquakes in Qinghai-Tibet Plateau Using Rescaled Range Analysis
Authors: Xu Linfeng , Chen Jiemin , Liu Zhixin , Liu Yan , Tian Jiawei 
Published: May 2021

Abstract
Fractal analysis provides a powerful method for studying complicated natural phenomena. This paper employs fractal analysis to study seismology based on the statistical fractal concept and provides a simple overview for analysing the temporal distribution and fractal characteristics of seismic activity. We delve into the self-shot fractal characteristics of seismic activity by using an analysis of the Rescaled Range scale invariance of seismic time and time interval sequences.
Research on the Coordinated and Sustainable Development of Jiangsu Power Grid under the “Double Carbon” Goal
Authors: Li Bingjie , Ge Yi , Xu Chao , Shi Jing , Chen Meng , Geng Shiping , Cheng Chen 
Published: May 2021

Abstract
Under the “double carbon” goal, renewable energy power generation will become the mainstream power generation in the future. The offshore Jiangsu Province has relatively abundant renewable resources, and it also creates favorable conditions for Jiangsu Power Grid Corporation to invest in renewable energy power generation business in the future. The new round of power system reform has had a profound impact on the determination of the investment scale of power grid companies and the optimization of the investment structure. This article first sets the future power supervision scenarios, and then measures the investment capacity and investment needs of power grid companies under different scenarios, determines the investment scale, conducts a coordinated analysis of investment capabilities and investment needs, matches investment capabilities and investment needs, and satisfies investment Under the premise of demand, improve investment efficiency, and finally realize the coordinated and sustainable development of Jiangsu Power Grid investment.
Study on Measurement Error of Power Frequency Electric Field Intensity Caused by Change of Air Dielectric Constant with Humidity
Authors: Zhou Bin , Zhang Kai , Li Yu , Yang Lan , Ni Jiang 
Published: May 2021

Abstract
People are paying more and more attention to the influence of power frequency electric field on their living environment, so the measured value of power frequency electric field under AC transmission line becomes an important reference for judging whether the surrounding environment is polluted or not. In actual measurement, it is found that the measured value of electric field intensity in high humidity areas is often relatively large. This paper will investigate the influence of the change of air dielectric constant on electric field measurement. Through experiments and simulations, it is found that air dielectric constant increases with the increase of humidity, which increases rapidly before the ambient humidity reaches 75%, and increases slowly after the ambient humidity exceeds 75%. However, it was found by simulation that the change of air dielectric constant has no obvious influence on the surrounding electric field intensity. Therefore, the change of air dielectric constant is not the main factor leading to relatively large measured value of field intensity in high humidity areas.
Research and Analysis of Phase Modulation Method of Standby Power Transmission Line Based on TSPST
Authors: Wu Xuxin , Liu Yili , Ren Zheng , Liu Weiming 
Published: May 2021

Abstract
When the power plant fails, in order to reduce the excessive inrush current generated by the switching of the backup power supply to the electrical equipment, the backup power supply was unable to switch quickly. This article mainly studies and analyzes a power supply method based on TSPST to adjust the phase of the standby power transmission line and make corresponding design and calculation for the theory and structure of the process. According to the actual parameters of the project, the power supply method is simulated and analyzed. According to simulation experiments, the feasibility and reliability of the proposed power supply method are verified.
The allocation scheme of distribution network’s emergency service stations based on feeder fault prediction results
Authors: Li Feng , Jiang Xingxin , Li Feng , Zheng Cheng , Wang Jiaren , Pan Weijie 
Published: May 2021

Abstract
In order to solve the problems of low efficiency and long time consuming to determine the location scattering of distribution network emergency service stations on account of geometric shortest path method, this paper proposes an optimal allocation scheme of distribution network emergency service stations based on feeder fault prediction results. In this method, the weight of feeder fault level is fully considered by constructing the optimization model of emergency service station in accordance with the prediction results of feeder fault, and the process parameters such as path congestion factor, path obstacle factor, feeder bending and twisting factor, weather influence factor and average speed of rush repair vehicles are applied to the location optimization model of emergency service station. Compared with the original method, this model can obtain the total time which significantly shortens the road time of rush repair, and leaves as much free time as possible for the subsequent fault repair stage.
A Summary of wearable textiles power generation
Authors: Tian HuQiang , Han Ding , Wang Bin 
Published: May 2021

Abstract
With the advent of a series of wearable devices such as Google Glass, electronic bracelets, etc, people have become more and more interested in wearable devices, but because of the short power supply period, the function is greatly limited. So the use of fabric to generate electricity has slowly come into the eyes of researchers, to understand the history of fabric power generation, this paper mainly analyzes and summarizes the methods of power generation for different types of fabrics from domestic and foreign research, and proposes corresponding solutions based on practical problems. Secondly, the impact of the choice of materials on the actual power generation, including output performance, output stability is further outlined.
Big Data Lean Evaluation of Transformer Operating Information
Authors: Wang Tao , Zhao Yaojun 
Published: May 2021

Abstract
Current status information of transformer is various and irregular. The difficult problem is how to reasonably analyze, process and comprehensive use the information. This paper, according to characteristics, repair strategies and management experience of transformers, extracts, integrates, optimizes and normalizes current status evaluation standards, and establishes a set of status accurate evaluation model based on transformer operating information with big data analysis and mining algorithm to get accurate portrayal of transform, so as to find out potential defects in time, and improve transformer control efficiency, operating stability and reliability. The operation in certain city shows the model could greatly reduce workload of status evaluation and save large amount of labor and equipment costs.
The fluorescence spectroscopic study on the interaction between 3-ethyl-benzothiazospironaphthopyran and bovine serum albumin
Authors: Liu Jie , Liu Jianghua 
Published: May 2021

Abstract
The interaction of 3-ethyl-benzothiazospironaphthopyran (BSNP) with bovine serum albumin (BSA) was analyzed by fluorescence spectroscopy. Firstly, the optimal experimental conditions, including medium, pH and ionic strength, were investigated. Secondly, the fluorescence titration experiments at 298 K, 306 K, and 313 K showed that the intrinsic fluorescence of BSA can be strongly quenched by the small organic molecule BSNP. The formation of a BSA-BSNP complex suggested that the fluorescence quenching mechanism may be a kind of static quenching procedure. Finally, the binding constants (K) and the ratio of fluorescence quantum yields of BSA-BSNP complex and free BSA (f) at three different temperatures were obtained. The values of the former were 7.91×104 L mol-1, 6.60×104 L mol-1, and 5.22×104 L mol-1. The values of the latter is 0.88, 0.98, and 1.00.
Preparation of a new Cu(II)-imprinted pyridine-functionalized silica gel sorbent and its adsorption characteristic
Authors: Guo Dongdong , Wang Guozheng , Cheng Zhigang , Zhao Lun , Xie Zhihai 
Published: May 2021

Abstract
A new sorbent of Cu(II)-imprinted pyridine-functionalized silica gel (Cu-IIP/SiO2) was prepared with molecular surface-imprinting technique for selective solid-phase extraction (SPE) of Cu(II). The Cu-IIP/SiO2 had better adsorption capacity and selectivity for Cu(II) then non-imprinnted polymer. The maximum static adsorption capacity for Cu(II) was 20.67 mg g-1 and 13.36 mg g-1 for the ion-imprinted and non-imprinted sorbents, respectively. The time of adsorption equilibrium was 10 min, and the quantitative desorption only needed 3 min with 0.1 mol L-1 HCl as the eluant. The adsorption kinetic and isotherm of the Cu-IIP/SiO2 were agreed with pseudo-second-order kinetic model and Langmuir adsorption model, respectively. The Cu-IIP/SiO2 was recycled ten times and the absorption capacity was no significant decrease.
Field Test and Discussion on Individualized Test Cycle of Water Injection Wells
Authors: Yu Yanan 
Published: May 2021

Abstract
As the oilfield enters the late development stage of ultra-high water cut, the number of separate layer water injection wells increases year by year, and the single well interval becomes finer and finer, which makes the test adjustment more difficult and the qualification rate of periodic test matching lower, and finally affects the decline of water injection qualification rate. In view of the above reasons, it is urgent to formulate a personalized test cycle. It is a major task to ensure the stable production of the oilfield to ensure the water injection, enough water injection, improve the quality of water injection, and ensure that the water drive oilfield development meets the program requirements at the injection end. In the past year, the influencing factors of water injection qualification rate of water drive separate layer wells have been analyzed, and the change law of inspection qualification rate has been explored. Through the demonstration of experimental work, the personalized test cycle is discussed. The original 4-month test cycle is shortened to 2 months, and the test cycle is extended for wells with 100% qualified rate, and the test cycle is shortened for wells with less than 80% qualified rate. The problems such as long inspection period, low qualified rate of water injection and difficult single well test and adjustment are solved. To achieve accurate water injection, and ultimately achieve the purpose of stabilizing oil and controlling water.
Hydraulic System Design of Temporary Support for Fast Excavation of Top Coal
Authors: Liu Jiansheng , Cheng Fuming , Guo Xinhong , Lu Zhongliang , Li Zongxiang 
Published: May 2021

Abstract
Aiming at the problems of long time-consuming auxiliary operation, low excavation efficiency, high labor intensity and poor production safety in mechanized excavation construction of coal roadway, a temporary support for rapid excavation of top coal in thick coal seam is developed. The support is composed of inner frame assembly, outer frame assembly, inner and outer outrigger oil cylinders, walking oil cylinder, deviation rectification oil cylinder, auxiliary frame, hydraulic pipeline and hydraulic system. Through the design of the hydraulic system of the temporary support for the fast excavation of top coal in thick coal seam, the working pressure of the hydraulic system is determined, the composition and working principle of the hydraulic control system are analyzed and designed, and the hydraulic cylinder of inner frame outrigger, the hydraulic cylinder of outer frame outrigger, the hydraulic cylinder of auxiliary frame, the horizontal hydraulic cylinder and the adjustable spring hydraulic cylinder of the temporary support for the fast excavation of top coal in thick coal seam are designed and verified. The temporary support for fast excavation of top coal in thick coal seam can timely support the new exposed roof cut by roadheader, protect the safety of personnel and equipment in the working space, shorten the working time of support, improve the working efficiency of excavation support, reduce the labor intensity of workers, improve the production safety, accelerate the excavation speed of heading face, and improve the economic and social benefits of enterprises.
Multivariate load prediction method for integrated energy system based on CEEMD-LSTM
Authors: Zhang Wanjia , Huang Wei 
Published: May 2021

Abstract
Accurate load prediction is increasingly important for the economic dispatch of the integrated energy system. A multivariate load prediction method based on Complete Ensemble Empirical Mode Decomposition and Long Short Term Memory network (CEEMD-LSTM) is raised. Pearson correlation coefficient was used to analyze the influencing factors, and the influencing factors with high correlation degree were screened out. CEEMD was used to decompose cold, heat and electric load sequences into the mean components of Intrinsic Mode Function (IMF), and the ones with highly related to load forecasting are screened and retained. The selected IMF mean components and influencing factors were input into the LSTM model for training and learning to obtain the final CEEMD-LSTM load forecasting model. The simulation results are verified by an integrated energy system in a province. Compared with other load forecasting methods, the proposed load forecasting method has higher prediction accuracy, and considers the difference between cold, heat, electric load and the correlation of influencing factors.
Research on the Coordinated control Strategy of fault crossing capability of offshore wind power multi-terminal flexible DC system
Authors: Zhang Mingyao , Gao Yixin , Lu Xiaoli , Yin Zhongdong 
Published: May 2021

Abstract
To improve the ride-through capability (RTC) of the multi-terminal offshore wind power flexible DC system in response to faults, this paper is based on the basic structure and control strategy of the voltage source converter (VSC) station of the multi-terminal offshore wind power flexible DC transmission system (MTDC), and aims at the AC grid connected to the system with three-phase short circuits and wind turbine output changes According to the situation, the mechanism of voltage drop caused by the fault is analyzed, and the DC chopper energy bleeder circuit is connected to the DC side to cooperate with the comprehensive control scheme for fault ride-through of multi-terminal offshore wind power flexible DC collection system. Through theoretical analysis and building a simulation model, the design of the control strategy of the flexible collection system and the simulation study of fault ride-through is carried out on the Shandong Peninsula Beihai Wind Farm. The results show that: the VSC station controller of the offshore wind power multi-terminal system can make the multi-terminal system wind power distribution and consumption reasonable, and realize the stable operation of the system.
A 1,2,3-triazole-based Chiral Fluorescence Sensor for the Sensitive Recognition of Ferric Ion
Authors: Wu Changzhi , Shi Huizhong , Huang Yan , Fu Muyun , Wang Huizhen , Zhang Yafeng , Sun Xiaoxia 
Published: May 2021

Abstract
A chiral fluorescent sensor containing (S)-BINOL and 1, 2, 3-triazole moieties was synthesized via through a nucleophilic substitution reaction and a click reaction with high total yield. The fluorescence responses of chiral compounds W1 and ferric ion were investigated by a fluorescence spectra. The fluorescence emission intensity of W1 at λ = 390 nm (λex = 300 nm) was quenched quickly upon the coordination with a ferric ion while other metal ions had no obvious change.
Indication Analysis of Magnetic Particle Testing on PH13-8Mo Precipitation Hardening Stainless Steel
Authors: Luo Ning , Wang Shuzhi , Liu Guanghua 
Published: May 2021

Abstract
The abnormity indication which is detected using magnetic particle testing process of PH13-8Mo precipitation hardening stainless steel was analyzed, combine with the microstructure observation. The reason for the magnetic testing indication has been determined. Inhomogeneous microstructure is the main factor which causes the abnormal indication. The results provide an important basis for indication determinant in the magnetic particle testing process of martensitic precipitation hardening stainless steel.
Contrast Research about Performance of PA1010 and HPb59-1 Isolator in Heavy Slewing Bearing
Authors: Huang Chuanhui , Zhang Lei , Song Bin 
Published: May 2021

Abstract
The performance of heavy slewing bearing isolator materials PA1010 and HPb59-1 mating for bearing steel GCr15 was investigated through experiments in this paper. The effects of applied load, sliding speed and lubricant on friction coefficient and wear loss of PA1010 and HPb59-1 were discussed. The damage mechanism and failure law of PA1010 and HPb59-1 isolators were analysed. The results show that the friction coefficient of PA1010 is lower than that of HPb59-1 and the wear loss of PA1010 is higher than HPb59-1. The influence of rotational speed on the tribological properties of HPb59-1 is obviously higher than that of PA1010. At the low sliding speed, the wear loss of these two materials changes more significantly with the change of load. The influence of coupling pair surface roughness on the tribological properties of PA1010 is significantly higher than that of HPb59-1. When the surface roughness of coupling steel ring increases from 0.2μm to 0.4μm, the growth rate of friction coefficient of PA1010 is 274.1% higher than that of HPb59-1, and the growth rate of wear loss is 25.5% higher than HPb59-1.
Study on plasma spraying graphite purification device
Authors: Li Jinmao , Song Chunlian , Lu Dandan , Huang Rui , Zhang Haobo 
Published: May 2021

Abstract
Given the problems in traditional graphite purification methods, such as low impurity removal efficiency; Using chemical purification method, the reagent is toxic and contaminated, which does not meet the environmental protection requirements; The physical purification method has the disadvantages of high energy consumption and high cost. The plasma spraying graphite purification method is proposed and its mechanism is studied. A prototype of the plasma spraying graphite purification device was assembled and developed. With the built purification device prototype as the research object, the state monitoring and comprehensive evaluation of the working gas flow, system working current, working voltage, carbon powder quantity, and other indicators are carried out. The change of impurity content in graphite was analyzed by the plasma spraying method under different index conditions. Experiments show that the graphite can be effectively purified by plasma spraying graphite purification method, and the carbon content is increased from 94.18% to 97.23%.
Optimization of Long-distance Oil Pipeline Production Operation Scheme
Authors: Gu Liming 
Published: May 2021

Abstract
XX oil pipeline is responsible for transporting crude oil from XX to XX refinery. According to the actual operating conditions of the pipeline, it is known that the pipeline operation scheduling plan is manually formulated based on experience, resulting in a large amount of waste of fuel energy and electrical energy. In order to improve the economic benefits of pipeline operation and reduce system energy consumption, it is of great practical significance to optimize the pipeline operation scheduling scheme. In order to reduce the deviation between theoretical calculation and actual data, the total heat transfer coefficient and hydraulic friction coefficient of the pipeline are corrected and fitted according to the principle of least square method, which effectively improves the accuracy of the calculation method. Take the minimum total energy consumption cost of the entire pipeline as the objective function, take the outbound temperature and pump combination scheme of the entire pipeline as the decision variables, and take the inbound temperature, outbound temperature, flow rate, heating furnace heat load, and pump unit characteristics as constraints Conditions, the establishment of the XX oil pipeline production operation scheduling program optimization mathematical model. The model is an optimization design problem including discrete variables and continuous variables, which is solved by dynamic programming according to the structural characteristics of the model. The optimization results show that energy consumption in winter and summer has been reduced by 23% and 18%, respectively.