bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research Status Quo and Exploration for Calcination and Activation Mechanism of Mullite Prepared from Gangue
Authors: Duan Bin , Liu Wanyi , Hu Qilin 
Published: July 2020

Abstract
The preparation of mullite refractory materials is one of the main applications of the current comprehensive utilization of gangue. In practice, it is found that it is not ideal to prepare mullite through direct calcination of gangue at high temperature. With reference to the preparation process of gangue cement clinker, it is necessary to perform the calcination and activation of gangue to increase its activity. The research on the gangue calcination and activation mechanism focuses on the change in the chemical compositions and microstructure. The author summarized and sorted a large amount of reference information and concluded that the gangue calcination and activation mechanism is that the chemical activity is changed due to the transformation of kaolinite dehydration to metakaolinite and caused by the change in the interlayer structure of kaolinite.
Design and optimization of noise barrier based on mechanical analysis of ANSYS
Authors: Peng Lei , Li Li , Zhou Yongyan , Fan Xiaopeng , Zou Zhuanglei , Li Linyong , Wang Yibo 
Published: July 2020

Abstract
In order to ensure the structural strength of the noise barrier and optimize its design, in this paper, the Finite Element Analysis software ANSYS is used to model the noise barrier, and the mechanical properties are analyzed. The effects of different numbers of reinforcing ribs on the deformation and stress of the noise barrier under natural wind are studied. From the perspective of wind load, load bearing and bolt strength, the number of reinforcing ribs of the noise barrier is optimized. The results show that the structural strength of our self-developed noise barrier can meet the requirements. This design method provides guarantee for the future engineering design and application.
Research on Key Technologies of Safety Production in Coal Enterprises
Authors: Liu Na , Zheng Juaner 
Published: July 2020

Abstract
According to the production characteristics of coal enterprises in China, this paper analyzes the causes of production accidents, summarizes the key factors that should be considered in the process of safety production of coal enterprises, and then puts forward the key technology system of safety production of coal enterprises in China, which provides a basis for improving the production safety of coal enterprises in China, and also provides a reference for the production of foreign coal enterprises.
Research on Green Technology for Energy-saving and Emission-reduction of New Gymnasium Building Construction
Authors: Yu Tianbo , Chen Xin , Liu Wei 
Published: July 2020

Abstract
In recent years, the continuous development of China’s science and technology has built a large number of sports venues. In order to ensure the high performance of the construction venues and environmental protection requirements, we have improved the construction of the stadium in this article, and the buildings with excessive energy consumption Parts and building facilities have been trimmed and improved, and at the same time, through improvements to the lighting system and air conditioning system, the overall energy-saving performance of the gymnasium building has reached a new high-tech technical venue, which has played a role in the later construction. Good reference.
Experiment and Analysis of Thermal Error of Boring-Milling Center Spindle
Authors: Zhao Yue , Xu Yuanjun , Tao Lin , Zhao Yuan 
Published: July 2020

Abstract
Taking the spindle of the boring-milling machining center as the research object, analyzes the heat source of the spindle, and uses FILR infrared camera and API spindle analyzer measurement system to design a thermal error experimental detection scheme for the spindle system. The temperature field and thermal deformation of the spindle system. Understanding and grasping the thermal deformation of the spindle system under different operating conditions during operation provides basic data support for the optimization design and compensation of the spindle system.
An Integrated Forecasting Model for Electricity Demand in a Power System Considering Time Difference between Criteria
Authors: Huo Huijuan , Liu Yijiang , Ma Tiannan , Wang Hongjin , Lu Yanchao 
Published: July 2020

Abstract
As China’s economy enters a stage of high-quality development, the trend of the power demand has changed and can affect the investment and construction of power industry. A series of key criteria impacting on power demand were sorter out to build a power demand index system currently. The time difference correlation analysis was applied to classify these criteria as precursor, consistency and lag index. The power demand index based on the three categories of criteria were fitted based on the multivariate statistical analysis. Then the comprehensive power demand index was assembled to forecast the electric power demand from 2020 to 2022 in China based on the current policy and economic situation.
Analysis of Performance and Stability Factors of Vehicle Ethanol Gasoline for Motor Vehicle
Authors: Li Zhenhua , Zhang Suya , Cao Feng 
Published: July 2020

Abstract
Ethanol gasoline is a new type of clean energy which is formed by mixing fuel ethanol and ordinary gasoline in a certain proportion. The use of ethanol gasoline in motor vehicles can reduce the emissions of exhaust pollutants and improve the engine performance, but there are also problems such as low combustion calorific value, strong corrosion and easy stratification. Based on the comparison of physical and chemical properties of ethanol and gasoline, the octane number, calorific value, oxygen content, latent heat of vaporization and ignition limit of ethanol gasoline were analyzed. The main problems are discussed in this paper, and the factors affecting the stability of ethanol gasoline are analyzed from three aspects of temperature, water content and ethanol content.
Analysis of influence of large-scale External power on East China Power Grid
Authors: Xu Lingjun , Sang Da , Zhang Xiaohu 
Published: July 2020

Abstract
The reliability of external power is of great significance to the protection of regional power, with the continuous development of grid structure, the ability of accept external power has been greatly improved. However, the continuous increase of the external power has posed new challenges to the power consumption and the peak regulation and the safe and stable operation of the power grid. According to the present situation and development planning of East China Power Grid, the influence of large-scale external power on East China Power Grid is analysed. The results show that the external power sent to East China Power Grid in the future should not be too large, and East China Power Grid should speed up the construction of pumped storage power stations, and give full play to the role of platform, and comprehensively configure and utilize external power sources in the area, which can promote the safe and stable operation of the power grid.
Numerical Simulation of the Heat Transfer Characteristics of Spray Cooling With Different Spray Conditions
Authors: Zhao Liang 
Published: July 2020

Abstract
As an efficient cooling method, spray cooling has been studied by many formers. While the heat transfer characteristics is quite complicated, many influence factors are not clear. In the present paper, three main influence factors, the heat temperature, the spray angle and the nozzle position are numerically studied by founding a two-phase flow model based on the Euler-Lagrangian method. The results shows that when the flow rate of the coolant large enough, the surface temperature and the total heat transfer flux would increase almost linearly proportional to the heat temperature. The spray angle increase could improve the heat transfer efficiency. The larger nozzle position will lead to higher heat transfer efficiency with a certain scope optionally. Due to atomizing construction, the temperature in the central of the heat would be higher, which should be pay more attention in the actual application.
Experimental Study of the Onset of Nucleate Boiling in Vertical Narrow Channels
Authors: Su Shunyu 
Published: July 2020

Abstract
Heat transfer mechanism in flow boiling through vertical narrow channels differs from that in larger circular tubes with diameters more than 10mm due to the increased surface forces. Basing on the experimental data, the main factors which have influence on heat flux of the onset of nucleate boiling (ONB), such as mass flux, system pressure and dimension of the narrow channel, are analyzed in this paper. The empirical correlation which used to calculate heat flux of the onset of nucleate boiling in vertical narrow annular channels in similar conditions is given here. The calculation results of this correlation are compared with the experimental data and agree well with it while the deviation is less than ±15%. And it’s concluded that narrow channels could enhance flow boiling heat transfer.
Analysis of development prospect and restrictive factors of pumped Storage Power Station
Authors: Xu Lingjun , Li Gang , Sang Da , Zhong Na 
Published: July 2020

Abstract
The development prospect of pumped storage power stations (PSPP) in China is analysed in this paper on the basis of summarize of the development history of PSPP in China and abroad, and combined with the development characteristics of PSPP, and from the point of view of the geographical distribution, the development trend of future energy and national policy, then the factors restricting the development of PSPP are analysed from the aspects of incentive mechanism and electricity price policy. It also puts forward some suggestions to promote the healthy and sustainable development of PSPP, in order to provide reference for the related research of PSPP.
Ferroresonance Analysis of 500kV GIS Substation during Commissioning Process
Authors: Zhang Dewen , Hu Xiaoxu , Zhang Hongda , Yu Hao , Shen Yubo 
Published: July 2020

Abstract
Ferroresonance is an important factor affecting the security and stability operation of Gas Insulated Switchgear (GIS) substation. The nonlinearity of excitation characteristic of inductance elements with iron cores is the fundamental cause for exciting ferroresonance. A 500kV GIS substation is taken into account in this paper, a variety of operating conditions which may excite ferroresonance during the commissioning process are analyzed by a numerical simulation method. The comparison with actual commissioning results shows that ferroresonance will be excited by opening circuit breakers to switch off no-load buses during the commissioning process. For single-phase electromagnetic potential transformer (PT), ferroresonance can be effectively suppressed by connecting damping resistance in parallel with residual winding temporarily.
Feasibility Study on the Audible Noise Measurement of Partial Discharge in Transformer Oil
Authors: Lu Ling , Hu Wei , Cai Wei , Peng Xiaofeng , She Kai , Zhao Xuhui , Wu Xiaowen 
Published: July 2020

Abstract
Partial discharge fault detection based audible noise is a kind of new method. This paper set up a needle-plate discharge system, and investigates the feasibility of measuring the audible noise of partial discharge in transformer oil. A needle-plate discharge system is built, and audio noise of partial discharge inside and outside of transformer oil is measured by a microphone and a specially designed hydrophone. According to signal processing, it’s found that the characteristics of internal and external noise have good consistency on time domain wave, spectrum distribution, and time-frequency distribution, except that the former is much larger than the latter in amplitude. The experiment results show that it’s feasible to measure the noise of partial discharge in the transformer oil and have significant advantage in signal to noise ratio.
Simulation Application and Research of Relay Protection Project under Virtual Reality Technology
Authors: Li Xianqi , Zhang Junwei , Luo Qiang , Wang Chong 
Published: July 2020

Abstract
The accurate and fast action of relay protection devices is an important guarantee for the safe and stable operation of power systems. In order to overcome the limitations of traditional training, this paper builds a simulation system of relay protection for substations based on virtual reality technology, so that trainees cannot only pass the man-machine Interactive operation to understand the appearance and basic operation of the equipment intuitively, and to check the action of the relay protection equipment under different faults through fault settings. Practical application shows that the system is of great significance to improve the quality of staff and ensure the safe and stable operation of the power system.
Simulation of multi-layer antireflection film for crystalline silicon solar cell
Authors: Ma Xinjian 
Published: July 2020

Abstract
Based on the design theory of single-layer, double-layer and multi-layer antireflection films, the thickness and refractive index of each layer of three-layer antireflection films are designed and calculated. The theoretical results of double-layer and three-layer antireflection films was simulated by PC1D, and reflectance, internal and external quantum efficiency and device characteristics of solar cells with double-layer and three-layer antireflection coatings were comparative studied. The results show that the three-layer antireflection film has a wider wavelength response range and higher external quantum efficiency, and the conversion efficiency of the three-layer antireflection film Crystalline silicon solar cells is improved by 0.2% compared with the double-layer antireflection film Crystalline silicon solar cells.
Study on the evaluation model of new energy real-time consumption capacity considering dynamic constraints of network sources
Authors: Kong Bojun , Wang Huichao , Chen Yan , Wu Jiajia , Wang Le , Fan Yongpu 
Published: July 2020

Abstract
In order to accurately evaluate the real-time consumption capacity of new energy considering the dynamic coordination of network sources in real-time scale, a new energy real-time consumption capacity evaluation model considering the dynamic constraints of network sources is established. Firstly, according to the operation plan of thermal power unit, the transmission plan of tie line, the regulation margin of transformer ratio and the capacity of each node’s reactive device, the dynamic constraint of network source is set. Then, according to the grid parameters, the real-time prediction of new energy station operation and the real-time prediction of each node load demand, the line power flow security, node power balance, node voltage security and new energy station operation constraints are set. Finally, two optimization objectives of new energy active power maximum and minimum consumption are set up, and a new energy real-time consumption capacity evaluation model considering the dynamic constraints of network sources is established, which takes the active and reactive power of thermal power unit, the active and reactive power of tie line, the transformer transformation ratio, the reactive capacity of reactive device switching, and the active and reactive power of new energy as decision variables. The validity of the model is verified by 4-node system.
Frequency Stability Assessment of Power System Using Frequency Stability Indices and Artificial Neural Newwork
Authors: Yang Ke , Sun Wen 
Published: July 2020

Abstract
Frequency stability assessment (FSA) is an evaluation of a dynamic behavior in power system under severe contingency. One of the significant approach in FSA is using frequency stability indices (FSI) to evaluate the performance of the power system and identify the stability status of the power system. Many methods for frequency stability assessment is Time Domain Simulation, Frequency Stability Index and Individual Generator’s Frequency referred to Slack Generator’s Frequency.
Online Verification method of Relay Protection Settings Based on ETAP software
Authors: Zhang Zhong , Kang Yong , Xie Xintao 
Published: July 2020

Abstract
In order to solve the limitations of the “pre-set, real-time action, and regular check” working mode of traditional relay protection in offshore oil field platform grids, an online verification method of relay protection settings based on ETAP software was proposed. The real-time operating status of the current power system is obtained through the EMS system, then short-circuit calculation of various faults performed automatically under the current operation mode. The protection cooperation analysis module of ETAP software is used to realize the real-time online verification of relay protection settings. According to the matching principle of the time-current characteristic (TCC) curve, the TCC curve is graphically adjusted to meet the current protection cooperation requirements. Finally, the validity of the method is verified by engineering example simulation of a platform grid in the Bohai Sea.
Application and Performance Analysis of Intelligent Soft Materials in Oil and Gas Exploitation
Authors: Wang Xiaohui , Qi Guangfeng , Zhao Jingang , Li Zengqiang , Peng Jie , Yue Wei , Fan Lu 
Published: July 2020

Abstract
In deep-sea oil and gas development, the problem faced by traditional materials is to consider the driving force of new material application. Soft matter science involves many fields such as mechanics, physics, biology, materials, chemistry and so on. It is regarded as a science in the 21st century and has received widespread attention in the world in recent years. The composition of soft matter is complex, and its motion does not depend on the atomic or molecular scale quantum mechanical action in the constituent units. During installation and service of deep water oil and gas transmission pipelines, the stress conditions are complicated, which not only meet the conditions of single load such as external hydrostatic pressure and bending moment, but also meet the conditions of combined action of external hydrostatic pressure and bending moment. The research and large-scale application of the physical mechanism of intelligent materials will lead to a major revolution in the development of material physics science. This paper analyzes the application and performance of intelligent soft materials in oil and gas exploitation.
Design of One Limb Movement Power Generation Device
Authors: Li Yanfang , Han Zhiyin , Cui Chengmei 
Published: July 2020

Abstract
Portable electronic products are playing an increasingly important role in people’s lives, but the continuous power supply problem outdoors has increasingly become the bottleneck for its development, moreover, it also often makes people not get a good experience due to inadequate power. In allusion to the above problems, one kind of limb movement power generation device was designed. This device is composed of crank and connecting rod mechanism, speed-increasing gear set micro-generator and so on, and it converts the kinetic energy of human movement into electrical energy, stores electrical energy to storage battery or directly supplies for electronic products, in order to solve the continuous power supply problem outdoors for portable electronic products, active exploration has been made.
Study of a deep LSTM model for power prediction of micro-combustor
Authors: Si Hongyu , Liang Xiaohui , Liu Suxiang , Hua Dongliang , Hou Dong , Xu Meirong , Liu Sijie , Mei Ning 
Published: July 2020

Abstract
A deep “long short-term memory” (LSTM) model, which is a special recurrent neural network (RNN) in deep learning, was established. Data from orthogonal experiments of the micro-combustor was used for training the model. A nonlinear mapping of output power to the geometric parameters of the micro-combustor was built. After changing the geometric parameters of the micro-combustor, the output power was predicted, and the corresponding results were analyzed. The results show that the model from the deep LSTM has a relative error of 1.1% in power prediction, which is within the scope of engineering requirements.
Archaea diversity of reclaimed soil in the coal gangue hill
Authors: Sun Qing , Chen Xiaonan , Ma Zongqin , Cao Huizheng , Wang Wenxing 
Published: July 2020

Abstract
Coal gangue is the most discharged solid waste in the process of coal mining. The coal gangue hill formed by stacking brings serious environmental pollution to the surrounding environment. The vegetation reconstruction of the coal gangue hill is one of the effective ways to solve the huge accumulation of coal gangue and environmental restoration. The growth of plants can affect the number and diversity of soil microorganisms, while microorganisms can promote soil nutrient cycling. Current reports have focused mainly on bacteria, actinomycetes and fungi, but little is known about the composition and function of archaea in the coal gangue reclamation soil. In this study, PCR-16S rRNA gene high-throughput sequencing technology was used to investigate the diversity of archaea in the coal gangue soil reconstructed by vegetation, to enrich the ecological assessment of coal gangue hill. The results showed that the species richness and diversity of archaea were great different in different sampling sites. Thaumarchaeota (>90%) and SCG (>90%) was the absolute dominant phylum and class of archaea in the gangue soil, respectively. Identified dominant genus was unidentified_SCG (5.5%), and more than 90% of archaea genera were unidentifiable, indicating a large number of unknown archaea resources in this soil environment. SCG, as a kind of chemoautotrophic ammonia oxidizing archaea, plays potential roles in nitrogen cycling of the coal gangue reclamation soil.
Extraction of anthocyanin from purple-fleshed potato through ultrasound-assisted extraction
Authors: Xu Haoxi , Huang Mixue , Liu Lei 
Published: July 2020

Abstract
In this study, the ultrasound-assisted extraction was utilized to extract anthocyanin from purple-fleshed potato, and the extraction process was optimized in the selection of various conditions of extracting agent, solid-liquid ratio, ultrasound time. In addition, single factor experiment and orthogonal experiment were carried out, which determined that the highest extraction efficiency of anthocyanin from purple-fleshed potato was achieved at the purple-fleshed potato-to-extracting agent ratio of 1:50 (g/mL), the ratio of 0.2% hydrochloric acid extracting agent to 50% ethanol at 2:3, and the ultrasound time of 15 min.
Emergency Response Mechanism and Improvement of Hazardous ChemicalsAccidents in Qing Yang City
Authors: Gai Ke , Chen Wanchun , Zhong Shan 
Published: July 2020

Abstract
This paper analyzes the distribution of hazardous chemicals production enterprises and the construction of rescue teams. In order to further strengthen and perfect the emergency mechanism of hazardous chemicals in our city, the problems in the safety management of hazardous chemicals production enterprises in our city are analyzed, and related requirements are put forward, so as to reduce the occurrence of hazardous chemicals accidents and reduce the degree of hazards. It is also recommended that enterprises and governments establish a sound accident emergency response system, and use emergency plans, emergency resources, emergency command, and emergency response to build a safe emergency response platform for hazardous chemicals. In order to improve the accident emergency mechanism.